[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Mitul Golani (3):
  drm/i915/hdmi: Optimize source audio parameter handling
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |  4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       | 16 ++---
 drivers/gpu/drm/i915/display/intel_audio.c    | 72 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_audio.h    |  1 +
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |  4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |  4 +-
 .../drm/i915/display/intel_display_types.h    | 12 +++-
 drivers/gpu/drm/i915/display/intel_dp.c       |  2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 39 +++++++++-
 drivers/gpu/drm/i915/display/intel_hdmi.h     |  1 +
 drivers/gpu/drm/i915/display/intel_sdvo.c     | 10 +--
 14 files changed, 143 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 1/3] drm/i915/hdmi: Optimize source audio parameter handling

[Mitul Golani]

To enhance the relationship between the has_audio and the source
audio parameter, create a separate crtc_state audio property and
add the has_audio parameter into it. Additionally, update the
access of the has_audio parameter from the crtc_state pointer as
it is wrapped under the audio. These modifications establish
a more cohesive structure and improve the accessibility and
organization of the audio-related parameters within the codebase.

--v1:
- add audio instead of audio_config in crtc_state
- add only has_audio then update related parameter access
- refactor other member to different commit where it is being used
- update commit message and header

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/g4x_dp.c            |  4 ++--
 drivers/gpu/drm/i915/display/g4x_hdmi.c          | 16 ++++++++--------
 drivers/gpu/drm/i915/display/intel_audio.c       |  6 +++---
 drivers/gpu/drm/i915/display/intel_cdclk.c       |  6 +++---
 .../gpu/drm/i915/display/intel_crtc_state_dump.c |  4 ++--
 drivers/gpu/drm/i915/display/intel_ddi.c         |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c     |  4 ++--
 .../gpu/drm/i915/display/intel_display_types.h   |  6 +++---
 drivers/gpu/drm/i915/display/intel_dp.c          |  2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c      |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c        |  2 +-
 drivers/gpu/drm/i915/display/intel_sdvo.c        | 10 +++++-----
 12 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/g4x_dp.c b/drivers/gpu/drm/i915/display/g4x_dp.c
index 112d91d81fdc..19f94f3331ee 100644
--- a/drivers/gpu/drm/i915/display/g4x_dp.c
+++ b/drivers/gpu/drm/i915/display/g4x_dp.c
@@ -345,7 +345,7 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
 
 	tmp = intel_de_read(dev_priv, intel_dp->output_reg);
 
-	pipe_config->has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
+	pipe_config->audio.has_audio = tmp & DP_AUDIO_OUTPUT_ENABLE && port != PORT_A;
 
 	if (HAS_PCH_CPT(dev_priv) && port != PORT_A) {
 		u32 trans_dp = intel_de_read(dev_priv,
@@ -625,7 +625,7 @@ static void intel_dp_enable_port(struct intel_dp *intel_dp,
 	 * fail when the power sequencer is freshly used for this port.
 	 */
 	intel_dp->DP |= DP_PORT_EN;
-	if (crtc_state->has_audio)
+	if (crtc_state->audio.has_audio)
 		intel_dp->DP |= DP_AUDIO_OUTPUT_ENABLE;
 
 	intel_de_write(dev_priv, intel_dp->output_reg, intel_dp->DP);
diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c b/drivers/gpu/drm/i915/display/g4x_hdmi.c
index 5c187e6e0472..363e21156304 100644
--- a/drivers/gpu/drm/i915/display/g4x_hdmi.c
+++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c
@@ -178,7 +178,7 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
 		pipe_config->has_infoframe = true;
 
 	if (tmp & HDMI_AUDIO_ENABLE)
-		pipe_config->has_audio = true;
+		pipe_config->audio.has_audio = true;
 
 	if (!HAS_PCH_SPLIT(dev_priv) &&
 	    tmp & HDMI_COLOR_RANGE_16_235)
@@ -224,7 +224,7 @@ static void g4x_hdmi_enable_port(struct intel_encoder *encoder,
 	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
 
 	temp |= SDVO_ENABLE;
-	if (pipe_config->has_audio)
+	if (pipe_config->audio.has_audio)
 		temp |= HDMI_AUDIO_ENABLE;
 
 	intel_de_write(dev_priv, intel_hdmi->hdmi_reg, temp);
@@ -240,7 +240,7 @@ static void g4x_enable_hdmi(struct intel_atomic_state *state,
 
 	g4x_hdmi_enable_port(encoder, pipe_config);
 
-	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+	drm_WARN_ON(&dev_priv->drm, pipe_config->audio.has_audio &&
 		    !pipe_config->has_hdmi_sink);
 	intel_audio_codec_enable(encoder, pipe_config, conn_state);
 }
@@ -258,7 +258,7 @@ static void ibx_enable_hdmi(struct intel_atomic_state *state,
 	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
 
 	temp |= SDVO_ENABLE;
-	if (pipe_config->has_audio)
+	if (pipe_config->audio.has_audio)
 		temp |= HDMI_AUDIO_ENABLE;
 
 	/*
@@ -293,7 +293,7 @@ static void ibx_enable_hdmi(struct intel_atomic_state *state,
 		intel_de_posting_read(dev_priv, intel_hdmi->hdmi_reg);
 	}
 
-	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+	drm_WARN_ON(&dev_priv->drm, pipe_config->audio.has_audio &&
 		    !pipe_config->has_hdmi_sink);
 	intel_audio_codec_enable(encoder, pipe_config, conn_state);
 }
@@ -313,7 +313,7 @@ static void cpt_enable_hdmi(struct intel_atomic_state *state,
 	temp = intel_de_read(dev_priv, intel_hdmi->hdmi_reg);
 
 	temp |= SDVO_ENABLE;
-	if (pipe_config->has_audio)
+	if (pipe_config->audio.has_audio)
 		temp |= HDMI_AUDIO_ENABLE;
 
 	/*
@@ -348,7 +348,7 @@ static void cpt_enable_hdmi(struct intel_atomic_state *state,
 			     TRANS_CHICKEN1_HDMIUNIT_GC_DISABLE, 0);
 	}
 
-	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+	drm_WARN_ON(&dev_priv->drm, pipe_config->audio.has_audio &&
 		    !pipe_config->has_hdmi_sink);
 	intel_audio_codec_enable(encoder, pipe_config, conn_state);
 }
@@ -360,7 +360,7 @@ static void vlv_enable_hdmi(struct intel_atomic_state *state,
 {
 	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 
-	drm_WARN_ON(&dev_priv->drm, pipe_config->has_audio &&
+	drm_WARN_ON(&dev_priv->drm, pipe_config->audio.has_audio &&
 		    !pipe_config->has_hdmi_sink);
 	intel_audio_codec_enable(encoder, pipe_config, conn_state);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 3d9c9b4f27f8..e20ffc8e9654 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -815,7 +815,7 @@ void intel_audio_codec_enable(struct intel_encoder *encoder,
 	struct intel_audio_state *audio_state;
 	enum port port = encoder->port;
 
-	if (!crtc_state->has_audio)
+	if (!crtc_state->audio.has_audio)
 		return;
 
 	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s][ENCODER:%d:%s] Enable audio codec on [CRTC:%d:%s], %u bytes ELD\n",
@@ -874,7 +874,7 @@ void intel_audio_codec_disable(struct intel_encoder *encoder,
 	struct intel_audio_state *audio_state;
 	enum port port = encoder->port;
 
-	if (!old_crtc_state->has_audio)
+	if (!old_crtc_state->audio.has_audio)
 		return;
 
 	drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s][ENCODER:%d:%s] Disable audio codec on [CRTC:%d:%s]\n",
@@ -930,7 +930,7 @@ void intel_audio_codec_get_config(struct intel_encoder *encoder,
 {
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 
-	if (!crtc_state->has_audio)
+	if (!crtc_state->audio.has_audio)
 		return;
 
 	if (i915->display.funcs.audio)
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index 4207863b7b2a..cb87c2e0cdaa 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -2553,7 +2553,7 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
 	 * restriction for GLK is 316.8 MHz.
 	 */
 	if (intel_crtc_has_dp_encoder(crtc_state) &&
-	    crtc_state->has_audio &&
+	    crtc_state->audio.has_audio &&
 	    crtc_state->port_clock >= 540000 &&
 	    crtc_state->lane_count == 4) {
 		if (DISPLAY_VER(dev_priv) == 10) {
@@ -2569,7 +2569,7 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
 	 * According to BSpec, "The CD clock frequency must be at least twice
 	 * the frequency of the Azalia BCLK." and BCLK is 96 MHz by default.
 	 */
-	if (crtc_state->has_audio && DISPLAY_VER(dev_priv) >= 9)
+	if (crtc_state->audio.has_audio && DISPLAY_VER(dev_priv) >= 9)
 		min_cdclk = max(2 * 96000, min_cdclk);
 
 	/*
@@ -2580,7 +2580,7 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
 	 *  162                    | 200 or higher"
 	 */
 	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
-	    intel_crtc_has_dp_encoder(crtc_state) && crtc_state->has_audio)
+	    intel_crtc_has_dp_encoder(crtc_state) && crtc_state->audio.has_audio)
 		min_cdclk = max(crtc_state->port_clock, min_cdclk);
 
 	/*
diff --git a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
index 8d4640d0fd34..b7d1be42bf0f 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc_state_dump.c
@@ -265,7 +265,7 @@ void intel_crtc_state_dump(const struct intel_crtc_state *pipe_config,
 
 	drm_dbg_kms(&i915->drm,
 		    "audio: %i, infoframes: %i, infoframes enabled: 0x%x\n",
-		    pipe_config->has_audio, pipe_config->has_infoframe,
+		    pipe_config->audio.has_audio, pipe_config->has_infoframe,
 		    pipe_config->infoframes.enable);
 
 	if (pipe_config->infoframes.enable &
@@ -291,7 +291,7 @@ void intel_crtc_state_dump(const struct intel_crtc_state *pipe_config,
 	    intel_hdmi_infoframe_enable(DP_SDP_VSC))
 		intel_dump_dp_vsc_sdp(i915, &pipe_config->infoframes.vsc);
 
-	if (pipe_config->has_audio)
+	if (pipe_config->audio.has_audio)
 		intel_dump_buffer(i915, "ELD: ", pipe_config->eld,
 				  drm_eld_size(pipe_config->eld));
 
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 090f242e610c..dcef5fc6d3bf 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3782,7 +3782,7 @@ static void intel_ddi_get_config(struct intel_encoder *encoder,
 
 	intel_ddi_mso_get_config(encoder, pipe_config);
 
-	pipe_config->has_audio =
+	pipe_config->audio.has_audio =
 		intel_ddi_is_audio_enabled(dev_priv, cpu_transcoder);
 
 	if (encoder->type == INTEL_OUTPUT_EDP)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 5c7fdc82ac22..59f66493c741 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1857,7 +1857,7 @@ static void get_crtc_power_domains(struct intel_crtc_state *crtc_state,
 		set_bit(intel_encoder->power_domain, mask->bits);
 	}
 
-	if (HAS_DDI(dev_priv) && crtc_state->has_audio)
+	if (HAS_DDI(dev_priv) && crtc_state->audio.has_audio)
 		set_bit(POWER_DOMAIN_AUDIO_MMIO, mask->bits);
 
 	if (crtc_state->shared_dpll)
@@ -5254,7 +5254,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 	PIPE_CONF_CHECK_BOOL(has_infoframe);
 	PIPE_CONF_CHECK_BOOL(fec_enable);
 
-	PIPE_CONF_CHECK_BOOL_INCOMPLETE(has_audio);
+	PIPE_CONF_CHECK_BOOL_INCOMPLETE(audio.has_audio);
 	PIPE_CONF_CHECK_BUFFER(eld, MAX_ELD_BYTES);
 
 	PIPE_CONF_CHECK_X(gmch_pfit.control);
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 731f2ec04d5c..ebd147180a6e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1129,9 +1129,9 @@ struct intel_crtc_state {
 	/* Whether we should send NULL infoframes. Required for audio. */
 	bool has_hdmi_sink;
 
-	/* Audio enabled on this pipe. Only valid if either has_hdmi_sink or
-	 * has_dp_encoder is set. */
-	bool has_audio;
+	struct {
+		bool has_audio;
+	} audio;
 
 	/*
 	 * Enable dithering, used when the selected pipe bpp doesn't match the
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index f4192fda1a76..626cc11c9f0e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2255,7 +2255,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 	if (HAS_PCH_SPLIT(dev_priv) && !HAS_DDI(dev_priv) && encoder->port != PORT_A)
 		pipe_config->has_pch_encoder = true;
 
-	pipe_config->has_audio =
+	pipe_config->audio.has_audio =
 		intel_dp_has_audio(encoder, conn_state) &&
 		intel_audio_compute_config(encoder, pipe_config, conn_state);
 
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index e3f176a093d2..f6e1bf3d9e25 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -322,7 +322,7 @@ static int intel_dp_mst_compute_config(struct intel_encoder *encoder,
 	pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
 	pipe_config->has_pch_encoder = false;
 
-	pipe_config->has_audio =
+	pipe_config->audio.has_audio =
 		intel_dp_mst_has_audio(conn_state) &&
 		intel_audio_compute_config(encoder, pipe_config, conn_state);
 
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 7ac5e6c5e00d..32157bef2eef 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2302,7 +2302,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 	if (adjusted_mode->flags & DRM_MODE_FLAG_DBLCLK)
 		pipe_config->pixel_multiplier = 2;
 
-	pipe_config->has_audio =
+	pipe_config->audio.has_audio =
 		intel_hdmi_has_audio(encoder, pipe_config, conn_state) &&
 		intel_audio_compute_config(encoder, pipe_config, conn_state);
 
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 21f92123c844..ebadd6f7f2ad 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -1191,7 +1191,7 @@ static void intel_sdvo_get_eld(struct intel_sdvo *intel_sdvo,
 	ssize_t len;
 	u8 val;
 
-	if (!crtc_state->has_audio)
+	if (!crtc_state->audio.has_audio)
 		return;
 
 	if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_AUDIO_STAT, &val, 1))
@@ -1406,7 +1406,7 @@ static int intel_sdvo_compute_config(struct intel_encoder *encoder,
 
 	pipe_config->has_hdmi_sink = intel_has_hdmi_sink(intel_sdvo_connector, conn_state);
 
-	pipe_config->has_audio =
+	pipe_config->audio.has_audio =
 		intel_sdvo_has_audio(encoder, pipe_config, conn_state) &&
 		intel_audio_compute_config(encoder, pipe_config, conn_state);
 
@@ -1760,7 +1760,7 @@ static void intel_sdvo_get_config(struct intel_encoder *encoder,
 	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_AUDIO_STAT,
 				 &val, 1)) {
 		if (val & SDVO_AUDIO_PRESENCE_DETECT)
-			pipe_config->has_audio = true;
+			pipe_config->audio.has_audio = true;
 	}
 
 	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_ENCODE,
@@ -1805,7 +1805,7 @@ static void intel_disable_sdvo(struct intel_atomic_state *state,
 	struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
 	u32 temp;
 
-	if (old_crtc_state->has_audio)
+	if (old_crtc_state->audio.has_audio)
 		intel_sdvo_disable_audio(intel_sdvo);
 
 	intel_sdvo_set_active_outputs(intel_sdvo, 0);
@@ -1898,7 +1898,7 @@ static void intel_enable_sdvo(struct intel_atomic_state *state,
 						   DRM_MODE_DPMS_ON);
 	intel_sdvo_set_active_outputs(intel_sdvo, intel_sdvo->attached_output);
 
-	if (pipe_config->has_audio)
+	if (pipe_config->audio.has_audio)
 		intel_sdvo_enable_audio(intel_sdvo, pipe_config, conn_state);
 }
 
-- 
2.25.1

[Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Mitul Golani]

Initialize the source audio capabilities for HDMI in crtc_state
property by setting them to their maximum supported values,
including max_channel and max_frequency. This allows for the
calculation of HDMI audio source capabilities with respect to
the available mode bandwidth. These capabilities encompass
parameters such as supported frequency and channel configurations.

--v1:
- Refactor max_channel and max_rate to this commit as it is being
initialised here
- Remove call for intel_audio_compute_eld to avoid any regression while
merge. instead call it in different commit when it is defined.
- Use int instead of unsigned int for max_channel and max_frequecy
- Update commit message and header

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 .../drm/i915/display/intel_display_types.h    |  6 ++++
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 35 +++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_hdmi.h     |  1 +
 3 files changed, 42 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index ebd147180a6e..74eee87d2df1 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1131,6 +1131,12 @@ struct intel_crtc_state {
 
 	struct {
 		bool has_audio;
+
+		/* Audio rate in Hz */
+		int max_frequency;
+
+		/* Number of audio channels */
+		int max_channel;
 	} audio;
 
 	/*
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 32157bef2eef..0188a600f9f5 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2277,6 +2277,40 @@ bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
 		!intel_hdmi_is_cloned(crtc_state);
 }
 
+static unsigned int calc_audio_bw(int channel, int frequency)
+{
+	int bits_per_sample = 32;
+	unsigned int bandwidth = channel * frequency * bits_per_sample;
+	return bandwidth;
+}
+
+void
+intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config)
+{
+	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
+	int num_of_channel, aud_rates[7] = {192000, 176000, 96000, 88000, 48000, 44100, 32000};
+	unsigned int audio_req_bandwidth, available_blank_bandwidth, vblank, hblank;
+
+	hblank = adjusted_mode->htotal - adjusted_mode->hdisplay;
+	vblank = adjusted_mode->vtotal - adjusted_mode->vdisplay;
+	available_blank_bandwidth = hblank * vblank *
+				    drm_mode_vrefresh(adjusted_mode) * pipe_config->pipe_bpp;
+	for (num_of_channel = 8; num_of_channel > 0; num_of_channel--) {
+		for (int index = 0; index < 7; index++) {
+			audio_req_bandwidth = calc_audio_bw(num_of_channel,
+							    aud_rates[index]);
+			if (audio_req_bandwidth < available_blank_bandwidth) {
+				pipe_config->audio.max_frequency = aud_rates[index];
+				pipe_config->audio.max_channel = num_of_channel;
+				return;
+			}
+		}
+	}
+
+	pipe_config->audio.max_frequency = 0;
+	pipe_config->audio.max_channel = 0;
+}
+
 int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			      struct intel_crtc_state *pipe_config,
 			      struct drm_connector_state *conn_state)
@@ -2344,6 +2378,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			pipe_config->hdmi_high_tmds_clock_ratio = true;
 		}
 	}
+	intel_hdmi_audio_compute_config(pipe_config);
 
 	intel_hdmi_compute_gcp_infoframe(encoder, pipe_config,
 					 conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.h b/drivers/gpu/drm/i915/display/intel_hdmi.h
index 6b39df38d57a..6df303daf348 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.h
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.h
@@ -27,6 +27,7 @@ void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
 bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
 				      const struct intel_crtc_state *crtc_state,
 				      const struct drm_connector_state *conn_state);
+void intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config);
 int intel_hdmi_compute_config(struct intel_encoder *encoder,
 			      struct intel_crtc_state *pipe_config,
 			      struct drm_connector_state *conn_state);
-- 
2.25.1

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Kai Vehmanen]

Hey,

replying to 9th June version (my mistake), but I checked the 15th June
patch version and comments applied to that one as well:

On Fri, 9 Jun 2023, Mitul Golani wrote:

> Initialize the source audio capabilities for HDMI in crtc_state
> property by setting them to their maximum supported values,
> including max_channel and max_frequency. This allows for the
> calculation of HDMI audio source capabilities with respect to
> the available mode bandwidth. These capabilities encompass
> parameters such as supported frequency and channel configurations.
[...]
> @@ -1131,6 +1131,12 @@ struct intel_crtc_state {
>  
>  	struct {
>  		bool has_audio;
> +
> +		/* Audio rate in Hz */
> +		int max_frequency;
> +
> +		/* Number of audio channels */
> +		int max_channel;
>  	} audio;

Comment on this below.

> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2277,6 +2277,40 @@ bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
>  		!intel_hdmi_is_cloned(crtc_state);
>  }
>  
> +static unsigned int calc_audio_bw(int channel, int frequency)
> +{
> +	int bits_per_sample = 32;
> +	unsigned int bandwidth = channel * frequency * bits_per_sample;

Maybe unsigned for bits_per_sample as well? And not sure how fixed this 
is, but having 32 as a define at start file with more descriptive name
might be a good idea as well. I.e. this is the audio sample container
size used in all calculations.

> +void
> +intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config)
> +{
> +	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
> +	int num_of_channel, aud_rates[7] = {192000, 176000, 96000, 88000, 48000, 44100, 32000};
> +	unsigned int audio_req_bandwidth, available_blank_bandwidth, vblank, hblank;
> +
> +	hblank = adjusted_mode->htotal - adjusted_mode->hdisplay;
> +	vblank = adjusted_mode->vtotal - adjusted_mode->vdisplay;
> +	available_blank_bandwidth = hblank * vblank *
> +				    drm_mode_vrefresh(adjusted_mode) * pipe_config->pipe_bpp;
> +	for (num_of_channel = 8; num_of_channel > 0; num_of_channel--) {

The maximum channel count of 8 would deserve its own define. It's pretty
much a constant coming from the specs, but still avoid magic numbers in 
code would be preferable. Or we remove this altoghter, see below...

> +		for (int index = 0; index < 7; index++) {
> +			audio_req_bandwidth = calc_audio_bw(num_of_channel,
> +							    aud_rates[index]);
> +			if (audio_req_bandwidth < available_blank_bandwidth) {

<= ?

> +				pipe_config->audio.max_frequency = aud_rates[index];
> +				pipe_config->audio.max_channel = num_of_channel;
> +				return;
> +			}

This will hit a problem if we have a case where bandwidth is not enough 
for 5.1 at 192kHz, but it is enough for 2ch 192kHz audio. This approach
forces us to give preference to either channel acount or sampling rate.

What if we just store the 'max audio samples per second' into pipe config:

 - have "int max_audio_samples_per_second;" in pipe_config
 - pipe_config->audio.max_audio_samples_per_second = 
available_blank_bandwidth / 32; 

Then when filtering SADs, the invidial channels+rate combination 
of each SAD is compared to the max_audio_samples_per_second and based
on that, the SAD is either filter or passed on. What do you think?

Br, Kai

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Jani Nikula]

On Mon, 19 Jun 2023, Kai Vehmanen <kai.vehmanen@linux.intel.com> wrote:
> Hey,
>
> replying to 9th June version (my mistake), but I checked the 15th June
> patch version and comments applied to that one as well:
>
> On Fri, 9 Jun 2023, Mitul Golani wrote:
>
>> Initialize the source audio capabilities for HDMI in crtc_state
>> property by setting them to their maximum supported values,
>> including max_channel and max_frequency. This allows for the
>> calculation of HDMI audio source capabilities with respect to
>> the available mode bandwidth. These capabilities encompass
>> parameters such as supported frequency and channel configurations.
> [...]
>> @@ -1131,6 +1131,12 @@ struct intel_crtc_state {
>>  
>>  	struct {
>>  		bool has_audio;
>> +
>> +		/* Audio rate in Hz */
>> +		int max_frequency;
>> +
>> +		/* Number of audio channels */
>> +		int max_channel;
>>  	} audio;
>
> Comment on this below.
>
>> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
>> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
>> @@ -2277,6 +2277,40 @@ bool intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
>>  		!intel_hdmi_is_cloned(crtc_state);
>>  }
>>  
>> +static unsigned int calc_audio_bw(int channel, int frequency)
>> +{
>> +	int bits_per_sample = 32;
>> +	unsigned int bandwidth = channel * frequency * bits_per_sample;
>
> Maybe unsigned for bits_per_sample as well?

Personally, I'd always go for signed ints. Integer promotions are hard.

BR,
Jani.


> And not sure how fixed this 
> is, but having 32 as a define at start file with more descriptive name
> might be a good idea as well. I.e. this is the audio sample container
> size used in all calculations.
>
>> +void
>> +intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config)
>> +{
>> +	struct drm_display_mode *adjusted_mode = &pipe_config->hw.adjusted_mode;
>> +	int num_of_channel, aud_rates[7] = {192000, 176000, 96000, 88000, 48000, 44100, 32000};
>> +	unsigned int audio_req_bandwidth, available_blank_bandwidth, vblank, hblank;
>> +
>> +	hblank = adjusted_mode->htotal - adjusted_mode->hdisplay;
>> +	vblank = adjusted_mode->vtotal - adjusted_mode->vdisplay;
>> +	available_blank_bandwidth = hblank * vblank *
>> +				    drm_mode_vrefresh(adjusted_mode) * pipe_config->pipe_bpp;
>> +	for (num_of_channel = 8; num_of_channel > 0; num_of_channel--) {
>
> The maximum channel count of 8 would deserve its own define. It's pretty
> much a constant coming from the specs, but still avoid magic numbers in 
> code would be preferable. Or we remove this altoghter, see below...
>
>> +		for (int index = 0; index < 7; index++) {
>> +			audio_req_bandwidth = calc_audio_bw(num_of_channel,
>> +							    aud_rates[index]);
>> +			if (audio_req_bandwidth < available_blank_bandwidth) {
>
> <= ?
>
>> +				pipe_config->audio.max_frequency = aud_rates[index];
>> +				pipe_config->audio.max_channel = num_of_channel;
>> +				return;
>> +			}
>
> This will hit a problem if we have a case where bandwidth is not enough 
> for 5.1 at 192kHz, but it is enough for 2ch 192kHz audio. This approach
> forces us to give preference to either channel acount or sampling rate.
>
> What if we just store the 'max audio samples per second' into pipe config:
>
>  - have "int max_audio_samples_per_second;" in pipe_config
>  - pipe_config->audio.max_audio_samples_per_second = 
> available_blank_bandwidth / 32; 
>
> Then when filtering SADs, the invidial channels+rate combination 
> of each SAD is compared to the max_audio_samples_per_second and based
> on that, the SAD is either filter or passed on. What do you think?
>
> Br, Kai
>

-- 
Jani Nikula, Intel Open Source Graphics Center

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Borah, Chaitanya Kumar]

Hello Kai,

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Kai
> Vehmanen
> Sent: Monday, June 19, 2023 5:56 PM
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>
> Cc: intel-gfx@lists.freedesktop.org; jyri.sarha@linux.intel.com
> Subject: Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize
> HDMI audio capabilities
> 
> Hey,
> 
> replying to 9th June version (my mistake), but I checked the 15th June patch
> version and comments applied to that one as well:
> 
> On Fri, 9 Jun 2023, Mitul Golani wrote:
> 
> > Initialize the source audio capabilities for HDMI in crtc_state
> > property by setting them to their maximum supported values, including
> > max_channel and max_frequency. This allows for the calculation of HDMI
> > audio source capabilities with respect to the available mode
> > bandwidth. These capabilities encompass parameters such as supported
> > frequency and channel configurations.
> [...]
> > @@ -1131,6 +1131,12 @@ struct intel_crtc_state {
> >
> >  	struct {
> >  		bool has_audio;
> > +
> > +		/* Audio rate in Hz */
> > +		int max_frequency;
> > +
> > +		/* Number of audio channels */
> > +		int max_channel;
> >  	} audio;
> 
> Comment on this below.
> 
> > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > @@ -2277,6 +2277,40 @@ bool intel_hdmi_compute_has_hdmi_sink(struct
> intel_encoder *encoder,
> >  		!intel_hdmi_is_cloned(crtc_state);
> >  }
> >
> > +static unsigned int calc_audio_bw(int channel, int frequency) {
> > +	int bits_per_sample = 32;
> > +	unsigned int bandwidth = channel * frequency * bits_per_sample;
> 
> Maybe unsigned for bits_per_sample as well? And not sure how fixed this is,
> but having 32 as a define at start file with more descriptive name might be a
> good idea as well. I.e. this is the audio sample container size used in all
> calculations.
> 
> > +void
> > +intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config)
> > +{
> > +	struct drm_display_mode *adjusted_mode = &pipe_config-
> >hw.adjusted_mode;
> > +	int num_of_channel, aud_rates[7] = {192000, 176000, 96000, 88000,
> 48000, 44100, 32000};
> > +	unsigned int audio_req_bandwidth, available_blank_bandwidth,
> vblank,
> > +hblank;
> > +
> > +	hblank = adjusted_mode->htotal - adjusted_mode->hdisplay;
> > +	vblank = adjusted_mode->vtotal - adjusted_mode->vdisplay;
> > +	available_blank_bandwidth = hblank * vblank *
> > +				    drm_mode_vrefresh(adjusted_mode) *
> pipe_config->pipe_bpp;
> > +	for (num_of_channel = 8; num_of_channel > 0; num_of_channel--) {
> 
> The maximum channel count of 8 would deserve its own define. It's pretty
> much a constant coming from the specs, but still avoid magic numbers in code
> would be preferable. Or we remove this altoghter, see below...
> 
> > +		for (int index = 0; index < 7; index++) {
> > +			audio_req_bandwidth =
> calc_audio_bw(num_of_channel,
> > +							    aud_rates[index]);
> > +			if (audio_req_bandwidth <
> available_blank_bandwidth) {
> 
> <= ?
> 
> > +				pipe_config->audio.max_frequency =
> aud_rates[index];
> > +				pipe_config->audio.max_channel =
> num_of_channel;
> > +				return;
> > +			}
> 
> This will hit a problem if we have a case where bandwidth is not enough for 5.1
> at 192kHz, but it is enough for 2ch 192kHz audio. This approach forces us to
> give preference to either channel acount or sampling rate.
> 
> What if we just store the 'max audio samples per second' into pipe config:
> 
>  - have "int max_audio_samples_per_second;" in pipe_config
>  - pipe_config->audio.max_audio_samples_per_second =
> available_blank_bandwidth / 32;
> 
> Then when filtering SADs, the invidial channels+rate combination of each SAD
> is compared to the max_audio_samples_per_second and based on that, the
> SAD is either filter or passed on. What do you think?
> 

This has been one my concern as well and we have thought about a similar approach as you suggest.
One disadvantage of this approach that I can see, would be that if there are hardware limitations on channels (as was in GLK) or frequencies independently. It will be become tricky with this approach. However, one can argue that these limitations arise from bandwidth itself.

Regarding the bits per sample, Is using 32bit for all audio formats fair or should we take into account different audio formats and their bit depth?

Regards

Chaitanya

> Br, Kai

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Kai Vehmanen]

Hey,

On Tue, 20 Jun 2023, Borah, Chaitanya Kumar wrote:

> > -----Original Message-----
> > From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Kai
> > Vehmanen
> > On Fri, 9 Jun 2023, Mitul Golani wrote:
[...]
> > This will hit a problem if we have a case where bandwidth is not enough for 5.1
> > at 192kHz, but it is enough for 2ch 192kHz audio. This approach forces us to
> > give preference to either channel acount or sampling rate.
> > 
> > What if we just store the 'max audio samples per second' into pipe config:
> > 
> >  - have "int max_audio_samples_per_second;" in pipe_config
> >  - pipe_config->audio.max_audio_samples_per_second =
> > available_blank_bandwidth / 32;
> > 
> > Then when filtering SADs, the invidial channels+rate combination of each SAD
> > is compared to the max_audio_samples_per_second and based on that, the
> > SAD is either filter or passed on. What do you think?
[...]> 
> This has been one my concern as well and we have thought about a similar 
> approach as you suggest. One disadvantage of this approach that I can 
> see, would be that if there are hardware limitations on channels (as was 
> in GLK) or frequencies independently. It will be become tricky with this 
> approach. However, one can argue that these limitations arise from 
> bandwidth itself.
[...]
> Regarding the bits per sample, Is using 32bit for all audio formats fair 
> or should we take into account different audio formats and their bit 
> depth?

hmm, I see the point. This is indeed trickier than it first seems. The 
32bit is a good worst-case bound, but in practise actual bandwidth needed 
will be less. And problem is, we don't really know which bit depth the 
application will choose, so again we need to limit based on the 
highest value in SAD.

And then you have the problem that this calculation assumes LPCM encoding.
If the audio is compressed, e.g. a 8ch DTS stream, the bandwidth 
calculation needs to be done differently (see 
linux/sound/pci/hda/hda_eld.c:hdmi_update_short_audio_desc()):

So I think there are (at least) two ways to go about this:
  1) reduce the scope and make the channel/rate limit more 
     limited, and only cover cases (like) GLK where a specific limitation
     is known -> max values not set for other platforms

  2) go for more generic description and expose the raw 
     bandwidth (in bits per second) available for audio
	-> then SAD filtering can be done based on raw bandwidth
	-> can be done only to LPCM at first, extended to compressed 
	formats later 
	-> still the problem that code needs to prioritze 
	   between channels/srate/bitdepth when filtering

Br, Kai

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Golani, Mitulkumar Ajitkumar]

Hi Kai,

> -----Original Message-----
> From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
> Sent: 21 June 2023 22:36
> To: Borah, Chaitanya Kumar <chaitanya.kumar.borah@intel.com>
> Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>; Golani, Mitulkumar
> Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>; intel-
> gfx@lists.freedesktop.org; jyri.sarha@linux.intel.com
> Subject: RE: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize
> HDMI audio capabilities
> 
> Hey,
> 
> On Tue, 20 Jun 2023, Borah, Chaitanya Kumar wrote:
> 
> > > -----Original Message-----
> > > From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf
> > > Of Kai Vehmanen On Fri, 9 Jun 2023, Mitul Golani wrote:
> [...]
> > > This will hit a problem if we have a case where bandwidth is not
> > > enough for 5.1 at 192kHz, but it is enough for 2ch 192kHz audio.
> > > This approach forces us to give preference to either channel acount or
> sampling rate.
> > >
> > > What if we just store the 'max audio samples per second' into pipe config:
> > >
> > >  - have "int max_audio_samples_per_second;" in pipe_config
> > >  - pipe_config->audio.max_audio_samples_per_second =
> > > available_blank_bandwidth / 32;
> > >
> > > Then when filtering SADs, the invidial channels+rate combination of
> > > each SAD is compared to the max_audio_samples_per_second and based
> > > on that, the SAD is either filter or passed on. What do you think?
> [...]>
> > This has been one my concern as well and we have thought about a
> > similar approach as you suggest. One disadvantage of this approach
> > that I can see, would be that if there are hardware limitations on
> > channels (as was in GLK) or frequencies independently. It will be
> > become tricky with this approach. However, one can argue that these
> > limitations arise from bandwidth itself.
> [...]
> > Regarding the bits per sample, Is using 32bit for all audio formats
> > fair or should we take into account different audio formats and their
> > bit depth?
> 
> hmm, I see the point. This is indeed trickier than it first seems. The 32bit is a
> good worst-case bound, but in practise actual bandwidth needed will be less.
> And problem is, we don't really know which bit depth the application will
> choose, so again we need to limit based on the highest value in SAD.
> 
> And then you have the problem that this calculation assumes LPCM
> encoding.
> If the audio is compressed, e.g. a 8ch DTS stream, the bandwidth calculation
> needs to be done differently (see
> linux/sound/pci/hda/hda_eld.c:hdmi_update_short_audio_desc()):
> 
> So I think there are (at least) two ways to go about this:
>   1) reduce the scope and make the channel/rate limit more
>      limited, and only cover cases (like) GLK where a specific limitation
>      is known -> max values not set for other platforms
> 
>   2) go for more generic description and expose the raw
>      bandwidth (in bits per second) available for audio
> 	-> then SAD filtering can be done based on raw bandwidth
> 	-> can be done only to LPCM at first, extended to compressed
> 	formats later
> 	-> still the problem that code needs to prioritze
> 	   between channels/srate/bitdepth when filtering

I tried to prioritise the logic with help of rate first. But in that I found some issues,
it is picking lowest channel with highest rate every time. 

I think apart from current params, adding max_audio_samples_per_second,
can solve both the issue with following case,

Let's say, with the obtained audio_req_bandwidth, if I encounter the following combination:
pipe_config->audio.max_channel = 8 and pipe_config->audio.max_frequency = "X" value.
Now, let's assume my sink supports only 7 channels. In this case, with current implementation,
pruning will be bypassed, and there is a possibility that the sink-supported channel multiplied
by the sink-supported rate exceeding the available blank bandwidth, but pruning didn't occur.

For this situation, I am considering adding an "else" part in intel_audio_compute_eld.
This "else" part would check if (sad_to_channels(sad) < crtc_state->audio.max_channel), for example, in the GLK case also. 
In that case, the channel would be fixed. 

So, if Channel * audio sample container size * (iterating from Max rate to Min rate) is less than
max_audio_samples_per_second, I believe we can eliminate the above mentioned situation.
If the sink's supported channel is lower than pipe_config->audio.max_channel, we can get another
chance to adjust the rate based on the sink's maximum capability.

now pruning will happen in 2 cases,

1. If pipe_config->audio.max_channel < sink's supported channels then prune as per obtained combination from,
intel_hdmi_audio_compute_config.
2. If pipe_config->audio.max_channel >  sink's supported channels, but sink's supported channel * sink supported max rate * audio sample container size
exceeds the max_audio_samples_per_second then prune with sink's supported channel and rate (which satisfy bandwidth condition. range: in between  Max to min).

Please give your opinion.

Thanks
Mitul
 

> 
> Br, Kai

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Kai Vehmanen]

Hi,

On Mon, 26 Jun 2023, Golani, Mitulkumar Ajitkumar wrote:
> Let's say, with the obtained audio_req_bandwidth, if I encounter the following combination:
> pipe_config->audio.max_channel = 8 and pipe_config->audio.max_frequency = "X" value.
> Now, let's assume my sink supports only 7 channels. In this case, with current implementation,
> pruning will be bypassed, and there is a possibility that the sink-supported channel multiplied
> by the sink-supported rate exceeding the available blank bandwidth, but pruning didn't occur.
> 
> For this situation, I am considering adding an "else" part in intel_audio_compute_eld.
> This "else" part would check if (sad_to_channels(sad) < crtc_state->audio.max_channel), for example, in the GLK case also. 
> In that case, the channel would be fixed. 
> 
> So, if Channel * audio sample container size * (iterating from Max rate to Min rate) is less than
> max_audio_samples_per_second, I believe we can eliminate the above mentioned situation.
> If the sink's supported channel is lower than pipe_config->audio.max_channel, we can get another
> chance to adjust the rate based on the sink's maximum capability.
[...]
> now pruning will happen in 2 cases,
> 
> 1. If pipe_config->audio.max_channel < sink's supported channels then prune as per obtained combination from,
> intel_hdmi_audio_compute_config.
> 2. If pipe_config->audio.max_channel >  sink's supported channels, but sink's supported channel * sink supported max rate * audio sample container size
> exceeds the max_audio_samples_per_second then prune with sink's supported channel and rate (which satisfy bandwidth condition. range: in between  Max to min).
> 
> Please give your opinion.

ack, I think this is sensible. The SAD filtering cannot be perfect as 
there can be multiple ways to prune the config to get within 
bandwidth budget (as we have three varibles for LPCM, channel count, 
sampling rate and also sample depth). So given limited visibility, I'd
say above approach sounds good. I'd also proceed (in your step2) with 
limiting first the sampling rate and only further limit channel count in 
second step.

Br, Kai

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Golani, Mitulkumar Ajitkumar]

Hi,

> -----Original Message-----
> From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
> Sent: 28 June 2023 22:41
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>
> Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>; Borah, Chaitanya
> Kumar <chaitanya.kumar.borah@intel.com>; intel-
> gfx@lists.freedesktop.org; jyri.sarha@linux.intel.com
> Subject: RE: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize
> HDMI audio capabilities
> 
> Hi,
> 
> On Mon, 26 Jun 2023, Golani, Mitulkumar Ajitkumar wrote:
> > Let's say, with the obtained audio_req_bandwidth, if I encounter the
> following combination:
> > pipe_config->audio.max_channel = 8 and pipe_config-
> >audio.max_frequency = "X" value.
> > Now, let's assume my sink supports only 7 channels. In this case, with
> > current implementation, pruning will be bypassed, and there is a
> > possibility that the sink-supported channel multiplied by the sink-
> supported rate exceeding the available blank bandwidth, but pruning didn't
> occur.
> >
> > For this situation, I am considering adding an "else" part in
> intel_audio_compute_eld.
> > This "else" part would check if (sad_to_channels(sad) < crtc_state-
> >audio.max_channel), for example, in the GLK case also.
> > In that case, the channel would be fixed.
> >
> > So, if Channel * audio sample container size * (iterating from Max
> > rate to Min rate) is less than max_audio_samples_per_second, I believe
> we can eliminate the above mentioned situation.
> > If the sink's supported channel is lower than
> > pipe_config->audio.max_channel, we can get another chance to adjust the
> rate based on the sink's maximum capability.
> [...]
> > now pruning will happen in 2 cases,
> >
> > 1. If pipe_config->audio.max_channel < sink's supported channels then
> > prune as per obtained combination from,
> intel_hdmi_audio_compute_config.
> > 2. If pipe_config->audio.max_channel >  sink's supported channels, but
> > sink's supported channel * sink supported max rate * audio sample
> container size exceeds the max_audio_samples_per_second then prune
> with sink's supported channel and rate (which satisfy bandwidth condition.
> range: in between  Max to min).
> >
> > Please give your opinion.
> 
> ack, I think this is sensible. The SAD filtering cannot be perfect as there can
> be multiple ways to prune the config to get within bandwidth budget (as we
> have three varibles for LPCM, channel count, sampling rate and also sample
> depth). So given limited visibility, I'd say above approach sounds good. I'd
> also proceed (in your step2) with limiting first the sampling rate and only
> further limit channel count in second step.
> 
> Br, Kai

Thanks Kai, 

I will update changes with new revision.

Regards,
MItul

Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize HDMI audio capabilities

[Golani, Mitulkumar Ajitkumar]

Hi @Kai Vehmanen

> -----Original Message-----
> From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
> Sent: 19 June 2023 17:56
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>
> Cc: intel-gfx@lists.freedesktop.org; jyri.sarha@linux.intel.com
> Subject: Re: [Intel-gfx] [RFC 2/3] drm/i915/display: Configure and initialize
> HDMI audio capabilities
> 
> Hey,
> 
> replying to 9th June version (my mistake), but I checked the 15th June patch
> version and comments applied to that one as well:
> 
> On Fri, 9 Jun 2023, Mitul Golani wrote:
> 
> > Initialize the source audio capabilities for HDMI in crtc_state
> > property by setting them to their maximum supported values, including
> > max_channel and max_frequency. This allows for the calculation of HDMI
> > audio source capabilities with respect to the available mode
> > bandwidth. These capabilities encompass parameters such as supported
> > frequency and channel configurations.
> [...]
> > @@ -1131,6 +1131,12 @@ struct intel_crtc_state {
> >
> >  	struct {
> >  		bool has_audio;
> > +
> > +		/* Audio rate in Hz */
> > +		int max_frequency;
> > +
> > +		/* Number of audio channels */
> > +		int max_channel;
> >  	} audio;
> 
> Comment on this below.
> 
> > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > @@ -2277,6 +2277,40 @@ bool
> intel_hdmi_compute_has_hdmi_sink(struct intel_encoder *encoder,
> >  		!intel_hdmi_is_cloned(crtc_state);
> >  }
> >
> > +static unsigned int calc_audio_bw(int channel, int frequency) {
> > +	int bits_per_sample = 32;
> > +	unsigned int bandwidth = channel * frequency * bits_per_sample;
> 
> Maybe unsigned for bits_per_sample as well? And not sure how fixed this is,
> but having 32 as a define at start file with more descriptive name might be a
> good idea as well. I.e. this is the audio sample container size used in all
> calculations.
> 

Thanks. Will push the correction in next revision.

> > +void
> > +intel_hdmi_audio_compute_config(struct intel_crtc_state *pipe_config)
> > +{
> > +	struct drm_display_mode *adjusted_mode = &pipe_config-
> >hw.adjusted_mode;
> > +	int num_of_channel, aud_rates[7] = {192000, 176000, 96000, 88000,
> 48000, 44100, 32000};
> > +	unsigned int audio_req_bandwidth, available_blank_bandwidth,
> vblank,
> > +hblank;
> > +
> > +	hblank = adjusted_mode->htotal - adjusted_mode->hdisplay;
> > +	vblank = adjusted_mode->vtotal - adjusted_mode->vdisplay;
> > +	available_blank_bandwidth = hblank * vblank *
> > +				    drm_mode_vrefresh(adjusted_mode) *
> pipe_config->pipe_bpp;
> > +	for (num_of_channel = 8; num_of_channel > 0; num_of_channel--) {
> 
> The maximum channel count of 8 would deserve its own define. It's pretty
> much a constant coming from the specs, but still avoid magic numbers in
> code would be preferable. Or we remove this altoghter, see below...

Thanks. Will push the correction in next revision.

> 
> > +		for (int index = 0; index < 7; index++) {
> > +			audio_req_bandwidth =
> calc_audio_bw(num_of_channel,
> > +							    aud_rates[index]);
> > +			if (audio_req_bandwidth <
> available_blank_bandwidth) {
> 
> <= ?
> 
> > +				pipe_config->audio.max_frequency =
> aud_rates[index];
> > +				pipe_config->audio.max_channel =
> num_of_channel;
> > +				return;
> > +			}
> 
> This will hit a problem if we have a case where bandwidth is not enough for
> 5.1 at 192kHz, but it is enough for 2ch 192kHz audio. This approach forces us
> to give preference to either channel acount or sampling rate.
> 
> What if we just store the 'max audio samples per second' into pipe config:
> 
>  - have "int max_audio_samples_per_second;" in pipe_config
>  - pipe_config->audio.max_audio_samples_per_second =
> available_blank_bandwidth / 32;
> 
> Then when filtering SADs, the invidial channels+rate combination of each
> SAD is compared to the max_audio_samples_per_second and based on that,
> the SAD is either filter or passed on. What do you think?
> 
> Br, Kai

Yes, I understood the issue while validating this on one of the panels. Let's say, with the
obtained audio_req_bandwidth, if I encounter the following combination:
pipe_config->audio.max_channel = 8 and pipe_config->audio.max_frequency = "X" value.
Now, let's assume my sink supports only 7 channels. In this case, pruning will be bypassed,
and there is a possibility that the sink-supported channel multiplied by the sink-supported
rate exceeds the available blank bandwidth, and pruning doesn't occur.

For this situation, I am considering adding an "else" part in intel_audio_compute_eld.
This "else" part would check if (sad_to_channels(sad) < crtc_state->audio.max_channel),
for example, in the GLK case. In that case, the channel would be fixed.

So, if Channel * audio sample container size * (iterating from Max rate to Min rate)
is less than max_audio_samples_per_second, I believe we can eliminate the situation you
mentioned. If the sink's supported channel is lower than pipe_config->audio.max_channel,
we can get another chance to adjust the rate based on the sink's maximum capability.

Please give your opinion on this approach ?

Thanks
Mitul

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate and channel
based on the capabilities of the audio source. This wrapper function
should encapsulate the logic for determining the supported rate and
channel and should return a set of SADs that are compatible with the
source.

--v1:
- call intel_audio_compute_eld in this commit as it is defined here

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 66 ++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_audio.h |  1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
 3 files changed, 69 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index e20ffc8e9654..a6a58b0f0717 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -794,6 +794,72 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	return true;
 }
 
+static unsigned int drm_sad_to_channels(const u8 *sad)
+{
+	return 1 + (sad[0] & 0x7);
+}
+
+static inline u8 *parse_sad(u8 *eld)
+{
+	unsigned int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static u8 get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000, 0};
+	u8 mask = 0;
+
+	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
+		mask |= 1 << index;
+		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
+			continue;
+		else
+			break;
+	}
+
+	return mask;
+}
+
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u8 *eld, *sad, index, mask = 0;
+
+	eld = crtc_state->eld;
+	if (!eld) {
+		drm_err(&i915->drm, "failed to locate eld\n");
+		return;
+	}
+
+	sad = (u8 *)parse_sad(eld);
+	if (sad) {
+		mask = get_supported_freq_mask(crtc_state);
+
+		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+			/*
+			 *  Respect to source restrictions. If source limit is greater than sink
+			 *  capabilities then follow to sink's highest supported rate.
+			 */
+			if (drm_sad_to_channels(sad) >= crtc_state->audio.max_channel) {
+				sad[0] &= ~0x7;
+				sad[0] |= crtc_state->audio.max_channel - 1;
+			}
+
+			sad[1] &= mask;
+		}
+	}
+}
+
 /**
  * intel_audio_codec_enable - Enable the audio codec for HD audio
  * @encoder: encoder on which to enable audio
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
index 07d034a981e9..2ec7fafd9711 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -14,6 +14,7 @@ struct intel_crtc_state;
 struct intel_encoder;
 
 void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 0188a600f9f5..beafeff494f8 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2403,6 +2403,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 	}
 
+	intel_audio_compute_eld(pipe_config);
+
 	return 0;
 }
 
-- 
2.25.1

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Borah, Chaitanya Kumar]

Hello Mitul,

> -----Original Message-----
> From: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>
> Sent: Friday, June 9, 2023 11:12 PM
> To: intel-gfx@lists.freedesktop.org
> Cc: Shankar, Uma <uma.shankar@intel.com>; Borah, Chaitanya Kumar
> <chaitanya.kumar.borah@intel.com>; Golani, Mitulkumar Ajitkumar
> <mitulkumar.ajitkumar.golani@intel.com>; Nautiyal, Ankit K
> <ankit.k.nautiyal@intel.com>
> Subject: [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD
> 
> Compute SADs that takes into account the supported rate and channel based
> on the capabilities of the audio source. This wrapper function should
> encapsulate the logic for determining the supported rate and channel and
> should return a set of SADs that are compatible with the source.
> 
> --v1:
> - call intel_audio_compute_eld in this commit as it is defined here
> 
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_audio.c | 66 ++++++++++++++++++++++
> drivers/gpu/drm/i915/display/intel_audio.h |  1 +
> drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
>  3 files changed, 69 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_audio.c
> b/drivers/gpu/drm/i915/display/intel_audio.c
> index e20ffc8e9654..a6a58b0f0717 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.c
> +++ b/drivers/gpu/drm/i915/display/intel_audio.c
> @@ -794,6 +794,72 @@ bool intel_audio_compute_config(struct
> intel_encoder *encoder,
>  	return true;
>  }
> 
> +static unsigned int drm_sad_to_channels(const u8 *sad) {
> +	return 1 + (sad[0] & 0x7);
> +}
> +

We can do away with the drm_ prefix here.

> +static inline u8 *parse_sad(u8 *eld)
> +{

Nit: eld_to_sad() could be a better name here.

> +	unsigned int ver, mnl;
> +
> +	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >>
> DRM_ELD_VER_SHIFT;
> +	if (ver != 2 && ver != 31)
> +		return NULL;
> +
> +	mnl = drm_eld_mnl(eld);
> +	if (mnl > 16)
> +		return NULL;
> +
> +	return eld + DRM_ELD_CEA_SAD(mnl, 0);
> +}
> +
> +static u8 get_supported_freq_mask(struct intel_crtc_state *crtc_state)
> +{
> +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000,
> 192000, 0};

Please check if we really need this trailing 0 here.

To cover the case where the maximum rate is set to 0Hz(init value) we can have a check of 

if (crtc_state->audio.max_frequency < 32000)


Regards

Chaitanya

> +	u8 mask = 0;
> +
> +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
> +		mask |= 1 << index;
> +		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
> +			continue;
> +		else
> +			break;
> +	}
> +
> +	return mask;
> +}
> +
> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state) {
> +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> +	u8 *eld, *sad, index, mask = 0;
> +
> +	eld = crtc_state->eld;
> +	if (!eld) {
> +		drm_err(&i915->drm, "failed to locate eld\n");
> +		return;
> +	}
> +
> +	sad = (u8 *)parse_sad(eld);
> +	if (sad) {
> +		mask = get_supported_freq_mask(crtc_state);
> +
> +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad
> += 3) {
> +			/*
> +			 *  Respect to source restrictions. If source limit is
> greater than sink
> +			 *  capabilities then follow to sink's highest supported
> rate.
> +			 */
> +			if (drm_sad_to_channels(sad) >= crtc_state-
> >audio.max_channel) {
> +				sad[0] &= ~0x7;
> +				sad[0] |= crtc_state->audio.max_channel - 1;
> +			}
> +
> +			sad[1] &= mask;
> +		}
> +	}
> +}
> +
>  /**
>   * intel_audio_codec_enable - Enable the audio codec for HD audio
>   * @encoder: encoder on which to enable audio diff --git
> a/drivers/gpu/drm/i915/display/intel_audio.h
> b/drivers/gpu/drm/i915/display/intel_audio.h
> index 07d034a981e9..2ec7fafd9711 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.h
> +++ b/drivers/gpu/drm/i915/display/intel_audio.h
> @@ -14,6 +14,7 @@ struct intel_crtc_state;  struct intel_encoder;
> 
>  void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
>  bool intel_audio_compute_config(struct intel_encoder *encoder,
>  				struct intel_crtc_state *crtc_state,
>  				struct drm_connector_state *conn_state); diff
> --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
> b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 0188a600f9f5..beafeff494f8 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2403,6 +2403,8 @@ int intel_hdmi_compute_config(struct intel_encoder
> *encoder,
>  		return -EINVAL;
>  	}
> 
> +	intel_audio_compute_eld(pipe_config);
> +
>  	return 0;
>  }
> 
> --
> 2.25.1

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Golani, Mitulkumar Ajitkumar]

Hi Chaitanya,

> -----Original Message-----
> From: Borah, Chaitanya Kumar <chaitanya.kumar.borah@intel.com>
> Sent: 15 June 2023 09:30
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>;
> intel-gfx@lists.freedesktop.org
> Cc: Shankar, Uma <uma.shankar@intel.com>; Nautiyal, Ankit K
> <ankit.k.nautiyal@intel.com>
> Subject: RE: [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD
> 
> Hello Mitul,
> 
> > -----Original Message-----
> > From: Golani, Mitulkumar Ajitkumar
> > <mitulkumar.ajitkumar.golani@intel.com>
> > Sent: Friday, June 9, 2023 11:12 PM
> > To: intel-gfx@lists.freedesktop.org
> > Cc: Shankar, Uma <uma.shankar@intel.com>; Borah, Chaitanya Kumar
> > <chaitanya.kumar.borah@intel.com>; Golani, Mitulkumar Ajitkumar
> > <mitulkumar.ajitkumar.golani@intel.com>; Nautiyal, Ankit K
> > <ankit.k.nautiyal@intel.com>
> > Subject: [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD
> >
> > Compute SADs that takes into account the supported rate and channel
> > based on the capabilities of the audio source. This wrapper function
> > should encapsulate the logic for determining the supported rate and
> > channel and should return a set of SADs that are compatible with the
> source.
> >
> > --v1:
> > - call intel_audio_compute_eld in this commit as it is defined here
> >
> > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_audio.c | 66
> > ++++++++++++++++++++++ drivers/gpu/drm/i915/display/intel_audio.h |  1
> > + drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
> >  3 files changed, 69 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_audio.c
> > b/drivers/gpu/drm/i915/display/intel_audio.c
> > index e20ffc8e9654..a6a58b0f0717 100644
> > --- a/drivers/gpu/drm/i915/display/intel_audio.c
> > +++ b/drivers/gpu/drm/i915/display/intel_audio.c
> > @@ -794,6 +794,72 @@ bool intel_audio_compute_config(struct
> > intel_encoder *encoder,
> >  	return true;
> >  }
> >
> > +static unsigned int drm_sad_to_channels(const u8 *sad) {
> > +	return 1 + (sad[0] & 0x7);
> > +}
> > +
> 
> We can do away with the drm_ prefix here.

Thanks for pointing out. Somehow missed while migrating. Pushed fix with new revision.

> 
> > +static inline u8 *parse_sad(u8 *eld)
> > +{
> 
> Nit: eld_to_sad() could be a better name here.

Sure. Corrected in new revision set.

> 
> > +	unsigned int ver, mnl;
> > +
> > +	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >>
> > DRM_ELD_VER_SHIFT;
> > +	if (ver != 2 && ver != 31)
> > +		return NULL;
> > +
> > +	mnl = drm_eld_mnl(eld);
> > +	if (mnl > 16)
> > +		return NULL;
> > +
> > +	return eld + DRM_ELD_CEA_SAD(mnl, 0); }
> > +
> > +static u8 get_supported_freq_mask(struct intel_crtc_state
> > +*crtc_state) {
> > +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000,
> > 192000, 0};
> 
> Please check if we really need this trailing 0 here.
> 
> To cover the case where the maximum rate is set to 0Hz(init value) we can
> have a check of
> 
> if (crtc_state->audio.max_frequency < 32000)
> 
> 
> Regards
> 
> Chaitanya

Right Good catch. It would have sent 0xff in that case. Corrected and sent with new revision.

Thanks,
Mitul

> 
> > +	u8 mask = 0;
> > +
> > +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
> > +		mask |= 1 << index;
> > +		if (crtc_state->audio.max_frequency !=
> audio_freq_hz[index])
> > +			continue;
> > +		else
> > +			break;
> > +	}
> > +
> > +	return mask;
> > +}
> > +
> > +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state) {
> > +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> > +	u8 *eld, *sad, index, mask = 0;
> > +
> > +	eld = crtc_state->eld;
> > +	if (!eld) {
> > +		drm_err(&i915->drm, "failed to locate eld\n");
> > +		return;
> > +	}
> > +
> > +	sad = (u8 *)parse_sad(eld);
> > +	if (sad) {
> > +		mask = get_supported_freq_mask(crtc_state);
> > +
> > +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad
> = 3) {
> > +			/*
> > +			 *  Respect to source restrictions. If source limit is
> > greater than sink
> > +			 *  capabilities then follow to sink's highest supported
> > rate.
> > +			 */
> > +			if (drm_sad_to_channels(sad) >= crtc_state-
> > >audio.max_channel) {
> > +				sad[0] &= ~0x7;
> > +				sad[0] |= crtc_state->audio.max_channel - 1;
> > +			}
> > +
> > +			sad[1] &= mask;
> > +		}
> > +	}
> > +}
> > +
> >  /**
> >   * intel_audio_codec_enable - Enable the audio codec for HD audio
> >   * @encoder: encoder on which to enable audio diff --git
> > a/drivers/gpu/drm/i915/display/intel_audio.h
> > b/drivers/gpu/drm/i915/display/intel_audio.h
> > index 07d034a981e9..2ec7fafd9711 100644
> > --- a/drivers/gpu/drm/i915/display/intel_audio.h
> > +++ b/drivers/gpu/drm/i915/display/intel_audio.h
> > @@ -14,6 +14,7 @@ struct intel_crtc_state;  struct intel_encoder;
> >
> >  void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
> > +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
> >  bool intel_audio_compute_config(struct intel_encoder *encoder,
> >  				struct intel_crtc_state *crtc_state,
> >  				struct drm_connector_state *conn_state);
> diff --git
> > a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > index 0188a600f9f5..beafeff494f8 100644
> > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > @@ -2403,6 +2403,8 @@ int intel_hdmi_compute_config(struct
> > intel_encoder *encoder,
> >  		return -EINVAL;
> >  	}
> >
> > +	intel_audio_compute_eld(pipe_config);
> > +
> >  	return 0;
> >  }
> >
> > --
> > 2.25.1

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Kai Vehmanen]

Hi,

[+Jyri]

On Fri, 9 Jun 2023, Mitul Golani wrote:

> Compute SADs that takes into account the supported rate and channel
> based on the capabilities of the audio source. This wrapper function
> should encapsulate the logic for determining the supported rate and
> channel and should return a set of SADs that are compatible with the
> source.

In general looks good. A few minor comments inline:

> +static u8 get_supported_freq_mask(struct intel_crtc_state *crtc_state)
> +{
> +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000, 0};
> +	u8 mask = 0;
> +
> +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {

Minor nitpick: the use of "u8" in many places seems a bit misleading. It 
seems for many places (like the "index" here), you can just use int. 
But right, the SAD mask is 8bit, so maybe the get_support_freq_mask()
is still warranted to return a u8 mask.

> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
> +{
> +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> +	u8 *eld, *sad, index, mask = 0;
> +
> +	eld = crtc_state->eld;
> +	if (!eld) {
> +		drm_err(&i915->drm, "failed to locate eld\n");
> +		return;
> +	}
> +
> +	sad = (u8 *)parse_sad(eld);
> +	if (sad) {
> +		mask = get_supported_freq_mask(crtc_state);
> +
> +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
> +			/*
> +			 *  Respect to source restrictions. If source limit is greater than sink
> +			 *  capabilities then follow to sink's highest supported rate.
> +			 */

Minor: maybe reword "Respect source restricitions. Limit capabilities to a 
subset that is supported both by the source and the sink."?

> +			if (drm_sad_to_channels(sad) >= crtc_state->audio.max_channel) {
> +				sad[0] &= ~0x7;
> +				sad[0] |= crtc_state->audio.max_channel - 1;

Can we add a debug trace here in case the channel count is limited? 

Br, Kai

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Golani, Mitulkumar Ajitkumar]

Hi Kai,

> -----Original Message-----
> From: Kai Vehmanen <kai.vehmanen@linux.intel.com>
> Sent: 19 June 2023 16:50
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>
> Cc: intel-gfx@lists.freedesktop.org; jyri.sarha@linux.intel.com
> Subject: Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute
> SAD
> 
> Hi,
> 
> [+Jyri]
> 
> On Fri, 9 Jun 2023, Mitul Golani wrote:
> 
> > Compute SADs that takes into account the supported rate and channel
> > based on the capabilities of the audio source. This wrapper function
> > should encapsulate the logic for determining the supported rate and
> > channel and should return a set of SADs that are compatible with the
> > source.
> 
> In general looks good. A few minor comments inline:
> 
> > +static u8 get_supported_freq_mask(struct intel_crtc_state
> > +*crtc_state) {
> > +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000,
> 192000, 0};
> > +	u8 mask = 0;
> > +
> > +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
> 
> Minor nitpick: the use of "u8" in many places seems a bit misleading. It
> seems for many places (like the "index" here), you can just use int.
> But right, the SAD mask is 8bit, so maybe the get_support_freq_mask() is still
> warranted to return a u8 mask.

Thanks for inputs. Few more places where I could have avoided using u8. I will
push the correction with new revision.

> 
> > +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state) {
> > +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> > +	u8 *eld, *sad, index, mask = 0;
> > +
> > +	eld = crtc_state->eld;
> > +	if (!eld) {
> > +		drm_err(&i915->drm, "failed to locate eld\n");
> > +		return;
> > +	}
> > +
> > +	sad = (u8 *)parse_sad(eld);
> > +	if (sad) {
> > +		mask = get_supported_freq_mask(crtc_state);
> > +
> > +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad
> += 3) {
> > +			/*
> > +			 *  Respect to source restrictions. If source limit is
> greater than sink
> > +			 *  capabilities then follow to sink's highest supported
> rate.
> > +			 */
> 
> Minor: maybe reword "Respect source restricitions. Limit capabilities to a
> subset that is supported both by the source and the sink."?

Thanks for inputs. Few more places where I could have avoided using u8. I will
push the correction with new revision.

> 
> > +			if (drm_sad_to_channels(sad) >= crtc_state-
> >audio.max_channel) {
> > +				sad[0] &= ~0x7;
> > +				sad[0] |= crtc_state->audio.max_channel - 1;
> 
> Can we add a debug trace here in case the channel count is limited?
> 
> Br, Kai

[Intel-gfx] ✗ Fi.CI.SPARSE: warning for Get optimal audio frequency and channels (rev2)

[Patchwork]

== Series Details ==

Series: Get optimal audio frequency and channels (rev2)
URL   : https://patchwork.freedesktop.org/series/119121/
State : warning

== Summary ==

Error: dim sparse failed
Sparse version: v0.6.2
Fast mode used, each commit won't be checked separately.
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:117:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:148:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:150:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:154:26: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:156:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:174:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:176:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:180:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:16: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:182:9: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:186:1: warning: unreplaced symbol 'return'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:188:9: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:192:35: warning: unreplaced symbol 'oldbit'
+./arch/x86/include/asm/bitops.h:1

[Intel-gfx] ✓ Fi.CI.BAT: success for Get optimal audio frequency and channels (rev2)

[Patchwork]

[-- Attachment #1: Type: text/plain, Size: 5723 bytes --]

== Series Details ==

Series: Get optimal audio frequency and channels (rev2)
URL   : https://patchwork.freedesktop.org/series/119121/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_13257 -> Patchwork_119121v2
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/index.html

Participating hosts (36 -> 35)
------------------------------

  Missing    (1): fi-pnv-d510 

Known issues
------------

  Here are the changes found in Patchwork_119121v2 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@i915_selftest@live@gt_heartbeat:
    - fi-glk-j4005:       [PASS][1] -> [DMESG-FAIL][2] ([i915#5334])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/fi-glk-j4005/igt@i915_selftest@live@gt_heartbeat.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/fi-glk-j4005/igt@i915_selftest@live@gt_heartbeat.html

  * igt@i915_selftest@live@hangcheck:
    - bat-atsm-1:         [PASS][3] -> [ABORT][4] ([i915#7349] / [i915#7913])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/bat-atsm-1/igt@i915_selftest@live@hangcheck.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/bat-atsm-1/igt@i915_selftest@live@hangcheck.html

  * igt@kms_chamelium_hpd@common-hpd-after-suspend:
    - fi-ivb-3770:        NOTRUN -> [SKIP][5] ([fdo#109271])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/fi-ivb-3770/igt@kms_chamelium_hpd@common-hpd-after-suspend.html

  
#### Possible fixes ####

  * igt@i915_selftest@live@gt_heartbeat:
    - fi-apl-guc:         [DMESG-FAIL][6] ([i915#5334]) -> [PASS][7]
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/fi-apl-guc/igt@i915_selftest@live@gt_heartbeat.html
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/fi-apl-guc/igt@i915_selftest@live@gt_heartbeat.html

  * igt@i915_selftest@live@gt_mocs:
    - {bat-mtlp-6}:       [DMESG-FAIL][8] ([i915#7059]) -> [PASS][9]
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/bat-mtlp-6/igt@i915_selftest@live@gt_mocs.html
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/bat-mtlp-6/igt@i915_selftest@live@gt_mocs.html

  * igt@i915_selftest@live@guc:
    - bat-rpls-2:         [DMESG-WARN][10] ([i915#7852]) -> [PASS][11]
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/bat-rpls-2/igt@i915_selftest@live@guc.html
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/bat-rpls-2/igt@i915_selftest@live@guc.html

  * igt@i915_selftest@live@hangcheck:
    - fi-ivb-3770:        [INCOMPLETE][12] ([i915#7913]) -> [PASS][13]
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/fi-ivb-3770/igt@i915_selftest@live@hangcheck.html
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/fi-ivb-3770/igt@i915_selftest@live@hangcheck.html

  * igt@i915_selftest@live@slpc:
    - bat-rpls-2:         [DMESG-WARN][14] ([i915#6367]) -> [PASS][15]
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/bat-rpls-2/igt@i915_selftest@live@slpc.html
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/bat-rpls-2/igt@i915_selftest@live@slpc.html
    - bat-rpls-1:         [DMESG-WARN][16] ([i915#6367]) -> [PASS][17]
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/bat-rpls-1/igt@i915_selftest@live@slpc.html
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/bat-rpls-1/igt@i915_selftest@live@slpc.html

  * igt@kms_pipe_crc_basic@nonblocking-crc@pipe-d-dp-1:
    - bat-dg2-8:          [FAIL][18] ([i915#7932]) -> [PASS][19] +1 similar issue
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/bat-dg2-8/igt@kms_pipe_crc_basic@nonblocking-crc@pipe-d-dp-1.html
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/bat-dg2-8/igt@kms_pipe_crc_basic@nonblocking-crc@pipe-d-dp-1.html

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [i915#4423]: https://gitlab.freedesktop.org/drm/intel/issues/4423
  [i915#5334]: https://gitlab.freedesktop.org/drm/intel/issues/5334
  [i915#6367]: https://gitlab.freedesktop.org/drm/intel/issues/6367
  [i915#7059]: https://gitlab.freedesktop.org/drm/intel/issues/7059
  [i915#7269]: https://gitlab.freedesktop.org/drm/intel/issues/7269
  [i915#7349]: https://gitlab.freedesktop.org/drm/intel/issues/7349
  [i915#7852]: https://gitlab.freedesktop.org/drm/intel/issues/7852
  [i915#7913]: https://gitlab.freedesktop.org/drm/intel/issues/7913
  [i915#7932]: https://gitlab.freedesktop.org/drm/intel/issues/7932
  [i915#8011]: https://gitlab.freedesktop.org/drm/intel/issues/8011
  [i915#8497]: https://gitlab.freedesktop.org/drm/intel/issues/8497


Build changes
-------------

  * Linux: CI_DRM_13257 -> Patchwork_119121v2

  CI-20190529: 20190529
  CI_DRM_13257: ce4482577d084a40755e177398f4c577423548e5 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_7324: 32b74aedc08e31b0143d29d7de56c5ba63eb310a @ https://gitlab.freedesktop.org/drm/igt-gpu-tools.git
  Patchwork_119121v2: ce4482577d084a40755e177398f4c577423548e5 @ git://anongit.freedesktop.org/gfx-ci/linux


### Linux commits

817e7eec14d7 drm/i915/display: Add wrapper to Compute SAD
cfad95bc000c drm/i915/display: Configure and initialize HDMI audio capabilities
0eec06b09bd4 drm/i915/hdmi: Optimize source audio parameter handling

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/index.html

[-- Attachment #2: Type: text/html, Size: 6517 bytes --]

[Intel-gfx] ✓ Fi.CI.IGT: success for Get optimal audio frequency and channels (rev2)

[Patchwork]

[-- Attachment #1: Type: text/plain, Size: 15518 bytes --]

== Series Details ==

Series: Get optimal audio frequency and channels (rev2)
URL   : https://patchwork.freedesktop.org/series/119121/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_13257_full -> Patchwork_119121v2_full
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  

Participating hosts (7 -> 7)
------------------------------

  No changes in participating hosts

Known issues
------------

  Here are the changes found in Patchwork_119121v2_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_lmem_swapping@parallel-random:
    - shard-apl:          NOTRUN -> [SKIP][1] ([fdo#109271] / [i915#4613]) +1 similar issue
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl1/igt@gem_lmem_swapping@parallel-random.html

  * igt@gem_userptr_blits@dmabuf-sync:
    - shard-apl:          NOTRUN -> [SKIP][2] ([fdo#109271] / [i915#3323])
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@gem_userptr_blits@dmabuf-sync.html

  * igt@i915_pm_lpsp@kms-lpsp@kms-lpsp-dp:
    - shard-apl:          NOTRUN -> [SKIP][3] ([fdo#109271] / [i915#1937] / [i915#4579])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@i915_pm_lpsp@kms-lpsp@kms-lpsp-dp.html

  * igt@kms_ccs@pipe-a-crc-primary-rotation-180-4_tiled_dg2_rc_ccs:
    - shard-apl:          NOTRUN -> [SKIP][4] ([fdo#109271]) +122 similar issues
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@kms_ccs@pipe-a-crc-primary-rotation-180-4_tiled_dg2_rc_ccs.html

  * igt@kms_ccs@pipe-c-ccs-on-another-bo-y_tiled_gen12_mc_ccs:
    - shard-apl:          NOTRUN -> [SKIP][5] ([fdo#109271] / [i915#3886]) +3 similar issues
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl1/igt@kms_ccs@pipe-c-ccs-on-another-bo-y_tiled_gen12_mc_ccs.html

  * igt@kms_content_protection@atomic-dpms@pipe-a-dp-1:
    - shard-apl:          NOTRUN -> [TIMEOUT][6] ([i915#7173])
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@kms_content_protection@atomic-dpms@pipe-a-dp-1.html

  * igt@kms_cursor_legacy@flip-vs-cursor-atomic-transitions:
    - shard-glk:          [PASS][7] -> [FAIL][8] ([i915#2346])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-glk7/igt@kms_cursor_legacy@flip-vs-cursor-atomic-transitions.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-glk2/igt@kms_cursor_legacy@flip-vs-cursor-atomic-transitions.html

  * igt@kms_flip@2x-plain-flip:
    - shard-snb:          NOTRUN -> [SKIP][9] ([fdo#109271]) +16 similar issues
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-snb7/igt@kms_flip@2x-plain-flip.html

  * igt@kms_flip@flip-vs-expired-vblank-interruptible@c-hdmi-a1:
    - shard-glk:          [PASS][10] -> [FAIL][11] ([i915#79])
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-glk8/igt@kms_flip@flip-vs-expired-vblank-interruptible@c-hdmi-a1.html
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-glk6/igt@kms_flip@flip-vs-expired-vblank-interruptible@c-hdmi-a1.html

  * igt@kms_flip@plain-flip-ts-check-interruptible@a-hdmi-a1:
    - shard-glk:          [PASS][12] -> [FAIL][13] ([i915#2122])
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-glk5/igt@kms_flip@plain-flip-ts-check-interruptible@a-hdmi-a1.html
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-glk6/igt@kms_flip@plain-flip-ts-check-interruptible@a-hdmi-a1.html

  * igt@kms_flip_scaled_crc@flip-32bpp-linear-to-64bpp-linear-downscaling@pipe-a-valid-mode:
    - shard-apl:          NOTRUN -> [SKIP][14] ([fdo#109271] / [i915#4579]) +8 similar issues
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@kms_flip_scaled_crc@flip-32bpp-linear-to-64bpp-linear-downscaling@pipe-a-valid-mode.html

  * igt@kms_plane@plane-panning-bottom-right-suspend@pipe-a-planes:
    - shard-apl:          [PASS][15] -> [ABORT][16] ([i915#180])
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-apl6/igt@kms_plane@plane-panning-bottom-right-suspend@pipe-a-planes.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl3/igt@kms_plane@plane-panning-bottom-right-suspend@pipe-a-planes.html

  * igt@kms_plane_alpha_blend@constant-alpha-max@pipe-c-dp-1:
    - shard-apl:          NOTRUN -> [FAIL][17] ([i915#4573]) +1 similar issue
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@kms_plane_alpha_blend@constant-alpha-max@pipe-c-dp-1.html

  * igt@kms_plane_scaling@plane-upscale-with-modifiers-factor-0-25@pipe-b-hdmi-a-1:
    - shard-snb:          NOTRUN -> [SKIP][18] ([fdo#109271] / [i915#4579]) +10 similar issues
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-snb1/igt@kms_plane_scaling@plane-upscale-with-modifiers-factor-0-25@pipe-b-hdmi-a-1.html

  * igt@kms_psr2_sf@overlay-plane-update-continuous-sf:
    - shard-apl:          NOTRUN -> [SKIP][19] ([fdo#109271] / [i915#658]) +1 similar issue
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@kms_psr2_sf@overlay-plane-update-continuous-sf.html

  * igt@kms_setmode@basic@pipe-a-hdmi-a-1:
    - shard-snb:          NOTRUN -> [FAIL][20] ([i915#5465]) +1 similar issue
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-snb1/igt@kms_setmode@basic@pipe-a-hdmi-a-1.html

  * igt@kms_writeback@writeback-fb-id:
    - shard-apl:          NOTRUN -> [SKIP][21] ([fdo#109271] / [i915#2437])
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl1/igt@kms_writeback@writeback-fb-id.html

  
#### Possible fixes ####

  * igt@drm_fdinfo@most-busy-idle-check-all@rcs0:
    - {shard-rkl}:        [FAIL][22] ([i915#7742]) -> [PASS][23]
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-rkl-4/igt@drm_fdinfo@most-busy-idle-check-all@rcs0.html
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-rkl-2/igt@drm_fdinfo@most-busy-idle-check-all@rcs0.html

  * igt@gem_barrier_race@remote-request@rcs0:
    - shard-apl:          [ABORT][24] ([i915#7461] / [i915#8211] / [i915#8234]) -> [PASS][25]
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-apl1/igt@gem_barrier_race@remote-request@rcs0.html
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@gem_barrier_race@remote-request@rcs0.html

  * igt@gem_eio@in-flight-suspend:
    - shard-apl:          [ABORT][26] ([i915#180]) -> [PASS][27] +1 similar issue
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-apl2/igt@gem_eio@in-flight-suspend.html
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@gem_eio@in-flight-suspend.html

  * igt@gem_exec_endless@dispatch@rcs0:
    - {shard-rkl}:        [TIMEOUT][28] ([i915#3778]) -> [PASS][29]
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-rkl-4/igt@gem_exec_endless@dispatch@rcs0.html
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-rkl-2/igt@gem_exec_endless@dispatch@rcs0.html

  * igt@gem_exec_fair@basic-deadline:
    - shard-glk:          [FAIL][30] ([i915#2846]) -> [PASS][31]
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-glk1/igt@gem_exec_fair@basic-deadline.html
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-glk1/igt@gem_exec_fair@basic-deadline.html

  * igt@gem_exec_fair@basic-none-solo@rcs0:
    - shard-apl:          [FAIL][32] ([i915#2842]) -> [PASS][33]
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-apl1/igt@gem_exec_fair@basic-none-solo@rcs0.html
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-apl2/igt@gem_exec_fair@basic-none-solo@rcs0.html

  * igt@gem_exec_fair@basic-pace-share@rcs0:
    - shard-glk:          [FAIL][34] ([i915#2842]) -> [PASS][35] +1 similar issue
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-glk6/igt@gem_exec_fair@basic-pace-share@rcs0.html
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-glk1/igt@gem_exec_fair@basic-pace-share@rcs0.html

  * igt@gem_lmem_swapping@smem-oom@lmem0:
    - {shard-dg1}:        [DMESG-WARN][36] ([i915#4936] / [i915#5493]) -> [PASS][37]
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-dg1-12/igt@gem_lmem_swapping@smem-oom@lmem0.html
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-dg1-17/igt@gem_lmem_swapping@smem-oom@lmem0.html

  * igt@i915_pm_dc@dc6-dpms:
    - {shard-tglu}:       [FAIL][38] ([i915#3989] / [i915#454]) -> [PASS][39]
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-tglu-6/igt@i915_pm_dc@dc6-dpms.html
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-tglu-9/igt@i915_pm_dc@dc6-dpms.html

  * igt@i915_pm_dc@dc9-dpms:
    - {shard-tglu}:       [SKIP][40] ([i915#4281]) -> [PASS][41]
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-tglu-3/igt@i915_pm_dc@dc9-dpms.html
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-tglu-10/igt@i915_pm_dc@dc9-dpms.html

  * igt@i915_pm_rpm@dpms-mode-unset-lpsp:
    - {shard-rkl}:        [SKIP][42] ([i915#1397]) -> [PASS][43]
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-rkl-4/igt@i915_pm_rpm@dpms-mode-unset-lpsp.html
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-rkl-7/igt@i915_pm_rpm@dpms-mode-unset-lpsp.html

  * igt@i915_pm_rpm@modeset-non-lpsp-stress:
    - {shard-dg1}:        [SKIP][44] ([i915#1397]) -> [PASS][45]
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-dg1-19/igt@i915_pm_rpm@modeset-non-lpsp-stress.html
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-dg1-16/igt@i915_pm_rpm@modeset-non-lpsp-stress.html

  * igt@kms_cursor_legacy@single-move@pipe-b:
    - {shard-rkl}:        [INCOMPLETE][46] ([i915#8011]) -> [PASS][47] +1 similar issue
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-rkl-7/igt@kms_cursor_legacy@single-move@pipe-b.html
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-rkl-4/igt@kms_cursor_legacy@single-move@pipe-b.html
    - {shard-dg1}:        [INCOMPLETE][48] ([i915#8011] / [i915#8347]) -> [PASS][49]
   [48]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-dg1-19/igt@kms_cursor_legacy@single-move@pipe-b.html
   [49]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-dg1-14/igt@kms_cursor_legacy@single-move@pipe-b.html

  * igt@kms_flip@flip-vs-expired-vblank-interruptible@b-hdmi-a2:
    - shard-glk:          [FAIL][50] ([i915#79]) -> [PASS][51] +2 similar issues
   [50]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13257/shard-glk8/igt@kms_flip@flip-vs-expired-vblank-interruptible@b-hdmi-a2.html
   [51]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/shard-glk6/igt@kms_flip@flip-vs-expired-vblank-interruptible@b-hdmi-a2.html

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109280]: https://bugs.freedesktop.org/show_bug.cgi?id=109280
  [fdo#109315]: https://bugs.freedesktop.org/show_bug.cgi?id=109315
  [fdo#110189]: https://bugs.freedesktop.org/show_bug.cgi?id=110189
  [fdo#111615]: https://bugs.freedesktop.org/show_bug.cgi?id=111615
  [i915#1072]: https://gitlab.freedesktop.org/drm/intel/issues/1072
  [i915#1397]: https://gitlab.freedesktop.org/drm/intel/issues/1397
  [i915#180]: https://gitlab.freedesktop.org/drm/intel/issues/180
  [i915#1937]: https://gitlab.freedesktop.org/drm/intel/issues/1937
  [i915#2122]: https://gitlab.freedesktop.org/drm/intel/issues/2122
  [i915#2346]: https://gitlab.freedesktop.org/drm/intel/issues/2346
  [i915#2437]: https://gitlab.freedesktop.org/drm/intel/issues/2437
  [i915#2575]: https://gitlab.freedesktop.org/drm/intel/issues/2575
  [i915#2842]: https://gitlab.freedesktop.org/drm/intel/issues/2842
  [i915#2846]: https://gitlab.freedesktop.org/drm/intel/issues/2846
  [i915#3323]: https://gitlab.freedesktop.org/drm/intel/issues/3323
  [i915#3555]: https://gitlab.freedesktop.org/drm/intel/issues/3555
  [i915#3591]: https://gitlab.freedesktop.org/drm/intel/issues/3591
  [i915#3689]: https://gitlab.freedesktop.org/drm/intel/issues/3689
  [i915#3778]: https://gitlab.freedesktop.org/drm/intel/issues/3778
  [i915#3804]: https://gitlab.freedesktop.org/drm/intel/issues/3804
  [i915#3886]: https://gitlab.freedesktop.org/drm/intel/issues/3886
  [i915#3955]: https://gitlab.freedesktop.org/drm/intel/issues/3955
  [i915#3989]: https://gitlab.freedesktop.org/drm/intel/issues/3989
  [i915#4078]: https://gitlab.freedesktop.org/drm/intel/issues/4078
  [i915#4281]: https://gitlab.freedesktop.org/drm/intel/issues/4281
  [i915#4391]: https://gitlab.freedesktop.org/drm/intel/issues/4391
  [i915#454]: https://gitlab.freedesktop.org/drm/intel/issues/454
  [i915#4573]: https://gitlab.freedesktop.org/drm/intel/issues/4573
  [i915#4579]: https://gitlab.freedesktop.org/drm/intel/issues/4579
  [i915#4613]: https://gitlab.freedesktop.org/drm/intel/issues/4613
  [i915#4936]: https://gitlab.freedesktop.org/drm/intel/issues/4936
  [i915#5176]: https://gitlab.freedesktop.org/drm/intel/issues/5176
  [i915#5235]: https://gitlab.freedesktop.org/drm/intel/issues/5235
  [i915#5354]: https://gitlab.freedesktop.org/drm/intel/issues/5354
  [i915#5465]: https://gitlab.freedesktop.org/drm/intel/issues/5465
  [i915#5493]: https://gitlab.freedesktop.org/drm/intel/issues/5493
  [i915#6095]: https://gitlab.freedesktop.org/drm/intel/issues/6095
  [i915#6268]: https://gitlab.freedesktop.org/drm/intel/issues/6268
  [i915#658]: https://gitlab.freedesktop.org/drm/intel/issues/658
  [i915#7173]: https://gitlab.freedesktop.org/drm/intel/issues/7173
  [i915#7461]: https://gitlab.freedesktop.org/drm/intel/issues/7461
  [i915#7742]: https://gitlab.freedesktop.org/drm/intel/issues/7742
  [i915#79]: https://gitlab.freedesktop.org/drm/intel/issues/79
  [i915#7975]: https://gitlab.freedesktop.org/drm/intel/issues/7975
  [i915#8011]: https://gitlab.freedesktop.org/drm/intel/issues/8011
  [i915#8211]: https://gitlab.freedesktop.org/drm/intel/issues/8211
  [i915#8213]: https://gitlab.freedesktop.org/drm/intel/issues/8213
  [i915#8234]: https://gitlab.freedesktop.org/drm/intel/issues/8234
  [i915#8247]: https://gitlab.freedesktop.org/drm/intel/issues/8247
  [i915#8292]: https://gitlab.freedesktop.org/drm/intel/issues/8292
  [i915#8347]: https://gitlab.freedesktop.org/drm/intel/issues/8347


Build changes
-------------

  * Linux: CI_DRM_13257 -> Patchwork_119121v2

  CI-20190529: 20190529
  CI_DRM_13257: ce4482577d084a40755e177398f4c577423548e5 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_7324: 32b74aedc08e31b0143d29d7de56c5ba63eb310a @ https://gitlab.freedesktop.org/drm/igt-gpu-tools.git
  Patchwork_119121v2: ce4482577d084a40755e177398f4c577423548e5 @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_119121v2/index.html

[-- Attachment #2: Type: text/html, Size: 16465 bytes --]

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>

Mitul Golani (3):
  drm/i915/hdmi: Optimize source audio parameter handling
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |  4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       | 16 ++--
 drivers/gpu/drm/i915/display/intel_audio.c    | 75 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_audio.h    |  1 +
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |  4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |  4 +-
 .../drm/i915/display/intel_display_types.h    | 12 ++-
 drivers/gpu/drm/i915/display/intel_dp.c       |  2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 39 +++++++++-
 drivers/gpu/drm/i915/display/intel_hdmi.h     |  1 +
 drivers/gpu/drm/i915/display/intel_sdvo.c     | 10 +--
 14 files changed, 146 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate and channel
based on the capabilities of the audio source. This wrapper function
should encapsulate the logic for determining the supported rate and
channel and should return a set of SADs that are compatible with the
source.

--v1:
- call intel_audio_compute_eld in this commit as it is defined here

--v2:
- Handle case when max frequency is less than 32k.
- remove drm prefix.
- name change for parse_sad to eld_to_sad.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 69 ++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_audio.h |  1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
 3 files changed, 72 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index e20ffc8e9654..335bfce18994 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -794,6 +794,75 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	return true;
 }
 
+static unsigned int sad_to_channels(const u8 *sad)
+{
+	return 1 + (sad[0] & 0x7);
+}
+
+static inline u8 *eld_to_sad(u8 *eld)
+{
+	unsigned int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static u8 get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000};
+	u8 mask = 0;
+
+	if(crtc_state->audio.max_frequency < 32000)
+		return mask;
+
+	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
+		mask |= 1 << index;
+		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
+			continue;
+		else
+			break;
+	}
+
+	return mask;
+}
+
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u8 *eld, *sad, index, mask = 0;
+
+	eld = crtc_state->eld;
+	if (!eld) {
+		drm_err(&i915->drm, "failed to locate eld\n");
+		return;
+	}
+
+	sad = (u8 *)eld_to_sad(eld);
+	if (sad) {
+		mask = get_supported_freq_mask(crtc_state);
+
+		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+			/*
+			 *  Respect to source restrictions. If source limit is greater than sink
+			 *  capabilities then follow to sink's highest supported rate.
+			 */
+			if (sad_to_channels(sad) >= crtc_state->audio.max_channel) {
+				sad[0] &= ~0x7;
+				sad[0] |= crtc_state->audio.max_channel - 1;
+			}
+
+			sad[1] &= mask;
+		}
+	}
+}
+
 /**
  * intel_audio_codec_enable - Enable the audio codec for HD audio
  * @encoder: encoder on which to enable audio
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
index 07d034a981e9..2ec7fafd9711 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -14,6 +14,7 @@ struct intel_crtc_state;
 struct intel_encoder;
 
 void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 0188a600f9f5..beafeff494f8 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2403,6 +2403,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 	}
 
+	intel_audio_compute_eld(pipe_config);
+
 	return 0;
 }
 
-- 
2.25.1

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Mitul Golani (3):
  drm/i915/hdmi: Optimize source audio parameter handling
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |  4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       | 16 ++---
 drivers/gpu/drm/i915/display/intel_audio.c    | 72 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_audio.h    |  1 +
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |  4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |  4 +-
 .../drm/i915/display/intel_display_types.h    | 12 +++-
 drivers/gpu/drm/i915/display/intel_dp.c       |  2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 39 +++++++++-
 drivers/gpu/drm/i915/display/intel_hdmi.h     |  1 +
 drivers/gpu/drm/i915/display/intel_sdvo.c     | 10 +--
 14 files changed, 143 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate and channel
based on the capabilities of the audio source. This wrapper function
should encapsulate the logic for determining the supported rate and
channel and should return a set of SADs that are compatible with the
source.

--v1:
- call intel_audio_compute_eld in this commit as it is defined here

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 66 ++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_audio.h |  1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
 3 files changed, 69 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index e20ffc8e9654..a6a58b0f0717 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -794,6 +794,72 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	return true;
 }
 
+static unsigned int drm_sad_to_channels(const u8 *sad)
+{
+	return 1 + (sad[0] & 0x7);
+}
+
+static inline u8 *parse_sad(u8 *eld)
+{
+	unsigned int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static u8 get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000, 0};
+	u8 mask = 0;
+
+	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
+		mask |= 1 << index;
+		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
+			continue;
+		else
+			break;
+	}
+
+	return mask;
+}
+
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u8 *eld, *sad, index, mask = 0;
+
+	eld = crtc_state->eld;
+	if (!eld) {
+		drm_err(&i915->drm, "failed to locate eld\n");
+		return;
+	}
+
+	sad = (u8 *)parse_sad(eld);
+	if (sad) {
+		mask = get_supported_freq_mask(crtc_state);
+
+		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+			/*
+			 *  Respect to source restrictions. If source limit is greater than sink
+			 *  capabilities then follow to sink's highest supported rate.
+			 */
+			if (drm_sad_to_channels(sad) >= crtc_state->audio.max_channel) {
+				sad[0] &= ~0x7;
+				sad[0] |= crtc_state->audio.max_channel - 1;
+			}
+
+			sad[1] &= mask;
+		}
+	}
+}
+
 /**
  * intel_audio_codec_enable - Enable the audio codec for HD audio
  * @encoder: encoder on which to enable audio
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
index 07d034a981e9..2ec7fafd9711 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -14,6 +14,7 @@ struct intel_crtc_state;
 struct intel_encoder;
 
 void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 0188a600f9f5..beafeff494f8 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2403,6 +2403,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 	}
 
+	intel_audio_compute_eld(pipe_config);
+
 	return 0;
 }
 
-- 
2.25.1

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Borah, Chaitanya Kumar]

Hello Kai,

> -----Original Message-----
> From: Golani, Mitulkumar Ajitkumar
> <mitulkumar.ajitkumar.golani@intel.com>
> Sent: Thursday, June 15, 2023 12:37 PM
> To: intel-gfx@lists.freedesktop.org
> Cc: Shankar, Uma <uma.shankar@intel.com>; Borah, Chaitanya Kumar
> <chaitanya.kumar.borah@intel.com>; Golani, Mitulkumar Ajitkumar
> <mitulkumar.ajitkumar.golani@intel.com>; Nautiyal, Ankit K
> <ankit.k.nautiyal@intel.com>
> Subject: [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD
> 
> Compute SADs that takes into account the supported rate and channel based
> on the capabilities of the audio source. This wrapper function should
> encapsulate the logic for determining the supported rate and channel and
> should return a set of SADs that are compatible with the source.
> 
> --v1:
> - call intel_audio_compute_eld in this commit as it is defined here
> 
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_audio.c | 66 ++++++++++++++++++++++
> drivers/gpu/drm/i915/display/intel_audio.h |  1 +
> drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
>  3 files changed, 69 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_audio.c
> b/drivers/gpu/drm/i915/display/intel_audio.c
> index e20ffc8e9654..a6a58b0f0717 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.c
> +++ b/drivers/gpu/drm/i915/display/intel_audio.c
> @@ -794,6 +794,72 @@ bool intel_audio_compute_config(struct
> intel_encoder *encoder,
>  	return true;
>  }
> 
> +static unsigned int drm_sad_to_channels(const u8 *sad) {
> +	return 1 + (sad[0] & 0x7);
> +}
> +
> +static inline u8 *parse_sad(u8 *eld)
> +{
> +	unsigned int ver, mnl;
> +
> +	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >>
> DRM_ELD_VER_SHIFT;
> +	if (ver != 2 && ver != 31)
> +		return NULL;
> +
> +	mnl = drm_eld_mnl(eld);
> +	if (mnl > 16)
> +		return NULL;
> +
> +	return eld + DRM_ELD_CEA_SAD(mnl, 0);
> +}
> +
> +static u8 get_supported_freq_mask(struct intel_crtc_state *crtc_state)
> +{
> +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000,
> 192000, 0};
> +	u8 mask = 0;
> +
> +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
> +		mask |= 1 << index;
> +		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
> +			continue;
> +		else
> +			break;
> +	}
> +
> +	return mask;
> +}
> +
> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state) {
> +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> +	u8 *eld, *sad, index, mask = 0;
> +
> +	eld = crtc_state->eld;
> +	if (!eld) {
> +		drm_err(&i915->drm, "failed to locate eld\n");
> +		return;
> +	}
> +
> +	sad = (u8 *)parse_sad(eld);
> +	if (sad) {
> +		mask = get_supported_freq_mask(crtc_state);
> +
> +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad +=
> 3) {
> +			/*
> +			 *  Respect to source restrictions. If source limit is
> greater than sink
> +			 *  capabilities then follow to sink's highest supported
> rate.
> +			 */
> +			if (drm_sad_to_channels(sad) >= crtc_state-
> >audio.max_channel) {
> +				sad[0] &= ~0x7;
> +				sad[0] |= crtc_state->audio.max_channel - 1;
> +			}
> +
> +			sad[1] &= mask;

We would like to hear your opinion on this implementation from audio driver perspective.

Regards

Chaitanya

> +		}
> +	}
> +}
> +
>  /**
>   * intel_audio_codec_enable - Enable the audio codec for HD audio
>   * @encoder: encoder on which to enable audio diff --git
> a/drivers/gpu/drm/i915/display/intel_audio.h
> b/drivers/gpu/drm/i915/display/intel_audio.h
> index 07d034a981e9..2ec7fafd9711 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.h
> +++ b/drivers/gpu/drm/i915/display/intel_audio.h
> @@ -14,6 +14,7 @@ struct intel_crtc_state;  struct intel_encoder;
> 
>  void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
>  bool intel_audio_compute_config(struct intel_encoder *encoder,
>  				struct intel_crtc_state *crtc_state,
>  				struct drm_connector_state *conn_state); diff
> --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
> b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 0188a600f9f5..beafeff494f8 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2403,6 +2403,8 @@ int intel_hdmi_compute_config(struct
> intel_encoder *encoder,
>  		return -EINVAL;
>  	}
> 
> +	intel_audio_compute_eld(pipe_config);
> +
>  	return 0;
>  }
> 
> --
> 2.25.1

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Mitul Golani (3):
  drm/i915/hdmi: Optimize source audio parameter handling
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |  4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       | 16 ++--
 drivers/gpu/drm/i915/display/intel_audio.c    | 75 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_audio.h    |  4 +
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |  4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |  4 +-
 .../drm/i915/display/intel_display_types.h    | 12 ++-
 drivers/gpu/drm/i915/display/intel_dp.c       |  2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 38 +++++++++-
 drivers/gpu/drm/i915/display/intel_hdmi.h     |  1 +
 drivers/gpu/drm/i915/display/intel_sdvo.c     | 10 +--
 14 files changed, 148 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate and channel
based on the capabilities of the audio source. This wrapper function
should encapsulate the logic for determining the supported rate and
channel and should return a set of SADs that are compatible with the
source.

--v1:
- call intel_audio_compute_eld in this commit as it is defined here

--v2:
- Handle case when max frequency is less than 32k.
- remove drm prefix.
- name change for parse_sad to eld_to_sad.

--v3:
- Use signed int wherever required.
- add debug trace when channel is limited.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 69 ++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_audio.h |  1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
 3 files changed, 72 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index e20ffc8e9654..1a1c773c1d41 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -794,6 +794,75 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	return true;
 }
 
+static int sad_to_channels(const u8 *sad)
+{
+	return 1 + (sad[0] & 0x7);
+}
+
+static inline u8 *eld_to_sad(u8 *eld)
+{
+	int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static int get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000, 0};
+	int mask = 0;
+
+	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
+		mask |= 1 << index;
+		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
+			continue;
+		else
+			break;
+	}
+
+	return mask;
+}
+
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u8 *eld, *sad;
+	int index, mask = 0;
+
+	eld = crtc_state->eld;
+	if (!eld) {
+		drm_err(&i915->drm, "failed to locate eld\n");
+		return;
+	}
+
+	sad = (u8 *)eld_to_sad(eld);
+	if (sad) {
+		mask = get_supported_freq_mask(crtc_state);
+
+		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+			/*
+			 * Respect source restricitions. Limit capabilities to a subset that is
+			 * supported both by the source and the sink.
+			 */
+			if (sad_to_channels(sad) >= crtc_state->audio.max_channel) {
+				sad[0] &= ~0x7;
+				sad[0] |= crtc_state->audio.max_channel - 1;
+				drm_dbg_kms(&i915->drm, "Channel count is limited to %d\n",
+					    crtc_state->audio.max_channel - 1);
+			}
+
+			sad[1] &= mask;
+		}
+	}
+}
+
 /**
  * intel_audio_codec_enable - Enable the audio codec for HD audio
  * @encoder: encoder on which to enable audio
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
index be3edf9c4982..a0162cdc7999 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -17,6 +17,7 @@ struct intel_encoder;
 #define MAX_CHANNEL_COUNT			8
 
 void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 6a4d477e8a15..daaa08c0ee47 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2402,6 +2402,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 	}
 
+	intel_audio_compute_eld(pipe_config);
+
 	return 0;
 }
 
-- 
2.25.1

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Jani Nikula]

On Mon, 26 Jun 2023, Mitul Golani <mitulkumar.ajitkumar.golani@intel.com> wrote:
> Compute SADs that takes into account the supported rate and channel
> based on the capabilities of the audio source. This wrapper function
> should encapsulate the logic for determining the supported rate and
> channel and should return a set of SADs that are compatible with the
> source.
>
> --v1:
> - call intel_audio_compute_eld in this commit as it is defined here
>
> --v2:
> - Handle case when max frequency is less than 32k.
> - remove drm prefix.
> - name change for parse_sad to eld_to_sad.
>
> --v3:
> - Use signed int wherever required.
> - add debug trace when channel is limited.
>
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_audio.c | 69 ++++++++++++++++++++++
>  drivers/gpu/drm/i915/display/intel_audio.h |  1 +
>  drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
>  3 files changed, 72 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
> index e20ffc8e9654..1a1c773c1d41 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.c
> +++ b/drivers/gpu/drm/i915/display/intel_audio.c
> @@ -794,6 +794,75 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
>  	return true;
>  }
>  
> +static int sad_to_channels(const u8 *sad)
> +{
> +	return 1 + (sad[0] & 0x7);
> +}
> +
> +static inline u8 *eld_to_sad(u8 *eld)

Please don't use inline.

> +{
> +	int ver, mnl;
> +
> +	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
> +	if (ver != 2 && ver != 31)
> +		return NULL;
> +
> +	mnl = drm_eld_mnl(eld);
> +	if (mnl > 16)
> +		return NULL;
> +
> +	return eld + DRM_ELD_CEA_SAD(mnl, 0);

Feels like this should be in drm_edid.[ch]... but hey, it actually is!
drm_eld_sad().

> +}
> +
> +static int get_supported_freq_mask(struct intel_crtc_state *crtc_state)
> +{
> +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000, 0};

This needs a comment referencing the source spec, as apparently the
order is significant.

> +	int mask = 0;
> +
> +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {

int index, and please declare it separately instead of within the for.

> +		mask |= 1 << index;

This means the first one is always supported. Is that the case? What if
max_frequency is 0?

> +		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
> +			continue;
> +		else
> +			break;

Maybe you mean:

		if (audio_freq_hz[index] > crtc_state->audio.max_frequency)
        		break;

		mask |= 1 << index;

> +	}
> +
> +	return mask;
> +}
> +
> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
> +{
> +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> +	u8 *eld, *sad;
> +	int index, mask = 0;
> +
> +	eld = crtc_state->eld;
> +	if (!eld) {
> +		drm_err(&i915->drm, "failed to locate eld\n");

It doesn't need to be an error.

> +		return;
> +	}
> +
> +	sad = (u8 *)eld_to_sad(eld);

Unnecessary cast.

> +	if (sad) {

if (!sad)
	return;

and reduce indent below.

> +		mask = get_supported_freq_mask(crtc_state);
> +
> +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
> +			/*
> +			 * Respect source restricitions. Limit capabilities to a subset that is
> +			 * supported both by the source and the sink.
> +			 */
> +			if (sad_to_channels(sad) >= crtc_state->audio.max_channel) {
> +				sad[0] &= ~0x7;
> +				sad[0] |= crtc_state->audio.max_channel - 1;
> +				drm_dbg_kms(&i915->drm, "Channel count is limited to %d\n",
> +					    crtc_state->audio.max_channel - 1);
> +			}
> +
> +			sad[1] &= mask;
> +		}
> +	}
> +}

This should also be static within intel_audio.c.

> +
>  /**
>   * intel_audio_codec_enable - Enable the audio codec for HD audio
>   * @encoder: encoder on which to enable audio
> diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
> index be3edf9c4982..a0162cdc7999 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.h
> +++ b/drivers/gpu/drm/i915/display/intel_audio.h
> @@ -17,6 +17,7 @@ struct intel_encoder;
>  #define MAX_CHANNEL_COUNT			8
>  
>  void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
> +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
>  bool intel_audio_compute_config(struct intel_encoder *encoder,
>  				struct intel_crtc_state *crtc_state,
>  				struct drm_connector_state *conn_state);
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 6a4d477e8a15..daaa08c0ee47 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2402,6 +2402,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
>  		return -EINVAL;
>  	}
>  
> +	intel_audio_compute_eld(pipe_config);
> +
>  	return 0;
>  }

-- 
Jani Nikula, Intel Open Source Graphics Center

Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Golani, Mitulkumar Ajitkumar]

Hi @Jani Nikula

> -----Original Message-----
> From: Jani Nikula <jani.nikula@linux.intel.com>
> Sent: 26 June 2023 22:48
> To: Golani, Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@intel.com>;
> intel-gfx@lists.freedesktop.org
> Subject: Re: [Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute
> SAD
> 
> On Mon, 26 Jun 2023, Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> wrote:
> > Compute SADs that takes into account the supported rate and channel
> > based on the capabilities of the audio source. This wrapper function
> > should encapsulate the logic for determining the supported rate and
> > channel and should return a set of SADs that are compatible with the
> > source.
> >
> > --v1:
> > - call intel_audio_compute_eld in this commit as it is defined here
> >
> > --v2:
> > - Handle case when max frequency is less than 32k.
> > - remove drm prefix.
> > - name change for parse_sad to eld_to_sad.
> >
> > --v3:
> > - Use signed int wherever required.
> > - add debug trace when channel is limited.
> >
> > Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_audio.c | 69
> > ++++++++++++++++++++++  drivers/gpu/drm/i915/display/intel_audio.h |
> > 1 +  drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
> >  3 files changed, 72 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/display/intel_audio.c
> > b/drivers/gpu/drm/i915/display/intel_audio.c
> > index e20ffc8e9654..1a1c773c1d41 100644
> > --- a/drivers/gpu/drm/i915/display/intel_audio.c
> > +++ b/drivers/gpu/drm/i915/display/intel_audio.c
> > @@ -794,6 +794,75 @@ bool intel_audio_compute_config(struct
> intel_encoder *encoder,
> >  	return true;
> >  }
> >
> > +static int sad_to_channels(const u8 *sad) {
> > +	return 1 + (sad[0] & 0x7);
> > +}
> > +
> > +static inline u8 *eld_to_sad(u8 *eld)
> 
> Please don't use inline.
> 
> > +{
> > +	int ver, mnl;
> > +
> > +	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >>
> DRM_ELD_VER_SHIFT;
> > +	if (ver != 2 && ver != 31)
> > +		return NULL;
> > +
> > +	mnl = drm_eld_mnl(eld);
> > +	if (mnl > 16)
> > +		return NULL;
> > +
> > +	return eld + DRM_ELD_CEA_SAD(mnl, 0);
> 
> Feels like this should be in drm_edid.[ch]... but hey, it actually is!
> drm_eld_sad().

As now, eld is added to crtc_state as well, intention was to overwrite
source eld. drm_eld_sad is returning const *. Due to which created
function local to intel_audio.c.

Also addressed rest other comments to this patch.

Thanks,
MItul
> 
> > +}
> > +
> > +static int get_supported_freq_mask(struct intel_crtc_state
> > +*crtc_state) {
> > +	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000,
> > +192000, 0};
> 
> This needs a comment referencing the source spec, as apparently the order
> is significant.
> 
> > +	int mask = 0;
> > +
> > +	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
> 
> int index, and please declare it separately instead of within the for.
> 
> > +		mask |= 1 << index;
> 
> This means the first one is always supported. Is that the case? What if
> max_frequency is 0?
> 
> > +		if (crtc_state->audio.max_frequency !=
> audio_freq_hz[index])
> > +			continue;
> > +		else
> > +			break;
> 
> Maybe you mean:
> 
> 		if (audio_freq_hz[index] > crtc_state-
> >audio.max_frequency)
>         		break;
> 
> 		mask |= 1 << index;
> 
> > +	}
> > +
> > +	return mask;
> > +}
> > +
> > +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state) {
> > +	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
> > +	u8 *eld, *sad;
> > +	int index, mask = 0;
> > +
> > +	eld = crtc_state->eld;
> > +	if (!eld) {
> > +		drm_err(&i915->drm, "failed to locate eld\n");
> 
> It doesn't need to be an error.
> 
> > +		return;
> > +	}
> > +
> > +	sad = (u8 *)eld_to_sad(eld);
> 
> Unnecessary cast.
> 
> > +	if (sad) {
> 
> if (!sad)
> 	return;
> 
> and reduce indent below.
> 
> > +		mask = get_supported_freq_mask(crtc_state);
> > +
> > +		for (index = 0; index < drm_eld_sad_count(eld); index++, sad
> += 3) {
> > +			/*
> > +			 * Respect source restricitions. Limit capabilities to a
> subset that is
> > +			 * supported both by the source and the sink.
> > +			 */
> > +			if (sad_to_channels(sad) >= crtc_state-
> >audio.max_channel) {
> > +				sad[0] &= ~0x7;
> > +				sad[0] |= crtc_state->audio.max_channel - 1;
> > +				drm_dbg_kms(&i915->drm, "Channel count
> is limited to %d\n",
> > +					    crtc_state->audio.max_channel -
> 1);
> > +			}
> > +
> > +			sad[1] &= mask;
> > +		}
> > +	}
> > +}
> 
> This should also be static within intel_audio.c.
> 
> > +
> >  /**
> >   * intel_audio_codec_enable - Enable the audio codec for HD audio
> >   * @encoder: encoder on which to enable audio diff --git
> > a/drivers/gpu/drm/i915/display/intel_audio.h
> > b/drivers/gpu/drm/i915/display/intel_audio.h
> > index be3edf9c4982..a0162cdc7999 100644
> > --- a/drivers/gpu/drm/i915/display/intel_audio.h
> > +++ b/drivers/gpu/drm/i915/display/intel_audio.h
> > @@ -17,6 +17,7 @@ struct intel_encoder;
> >  #define MAX_CHANNEL_COUNT			8
> >
> >  void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
> > +void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
> >  bool intel_audio_compute_config(struct intel_encoder *encoder,
> >  				struct intel_crtc_state *crtc_state,
> >  				struct drm_connector_state *conn_state);
> diff --git
> > a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > index 6a4d477e8a15..daaa08c0ee47 100644
> > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> > @@ -2402,6 +2402,8 @@ int intel_hdmi_compute_config(struct
> intel_encoder *encoder,
> >  		return -EINVAL;
> >  	}
> >
> > +	intel_audio_compute_eld(pipe_config);
> > +
> >  	return 0;
> >  }
> 
> --
> Jani Nikula, Intel Open Source Graphics Center

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Mitul Golani (3):
  drm/i915/hdmi: Optimize source audio parameter handling
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |  4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       | 16 ++--
 drivers/gpu/drm/i915/display/intel_audio.c    | 75 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_audio.h    |  4 +
 drivers/gpu/drm/i915/display/intel_cdclk.c    |  6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |  4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |  4 +-
 .../drm/i915/display/intel_display_types.h    | 12 ++-
 drivers/gpu/drm/i915/display/intel_dp.c       |  2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     | 38 +++++++++-
 drivers/gpu/drm/i915/display/intel_hdmi.h     |  1 +
 drivers/gpu/drm/i915/display/intel_sdvo.c     | 10 +--
 14 files changed, 148 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate and channel
based on the capabilities of the audio source. This wrapper function
should encapsulate the logic for determining the supported rate and
channel and should return a set of SADs that are compatible with the
source.

--v1:
- call intel_audio_compute_eld in this commit as it is defined here

--v2:
- Handle case when max frequency is less than 32k.
- remove drm prefix.
- name change for parse_sad to eld_to_sad.

--v3:
- Use signed int wherever required.
- add debug trace when channel is limited.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 69 ++++++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_audio.h |  1 +
 drivers/gpu/drm/i915/display/intel_hdmi.c  |  2 +
 3 files changed, 72 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index e20ffc8e9654..1a1c773c1d41 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -794,6 +794,75 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 	return true;
 }
 
+static int sad_to_channels(const u8 *sad)
+{
+	return 1 + (sad[0] & 0x7);
+}
+
+static inline u8 *eld_to_sad(u8 *eld)
+{
+	int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static int get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+	int audio_freq_hz[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000, 0};
+	int mask = 0;
+
+	for (u8 index = 0; index < ARRAY_SIZE(audio_freq_hz); index++) {
+		mask |= 1 << index;
+		if (crtc_state->audio.max_frequency != audio_freq_hz[index])
+			continue;
+		else
+			break;
+	}
+
+	return mask;
+}
+
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u8 *eld, *sad;
+	int index, mask = 0;
+
+	eld = crtc_state->eld;
+	if (!eld) {
+		drm_err(&i915->drm, "failed to locate eld\n");
+		return;
+	}
+
+	sad = (u8 *)eld_to_sad(eld);
+	if (sad) {
+		mask = get_supported_freq_mask(crtc_state);
+
+		for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+			/*
+			 * Respect source restricitions. Limit capabilities to a subset that is
+			 * supported both by the source and the sink.
+			 */
+			if (sad_to_channels(sad) >= crtc_state->audio.max_channel) {
+				sad[0] &= ~0x7;
+				sad[0] |= crtc_state->audio.max_channel - 1;
+				drm_dbg_kms(&i915->drm, "Channel count is limited to %d\n",
+					    crtc_state->audio.max_channel - 1);
+			}
+
+			sad[1] &= mask;
+		}
+	}
+}
+
 /**
  * intel_audio_codec_enable - Enable the audio codec for HD audio
  * @encoder: encoder on which to enable audio
diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
index 09697c770dbf..4979156f8156 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.h
+++ b/drivers/gpu/drm/i915/display/intel_audio.h
@@ -17,6 +17,7 @@ struct intel_encoder;
 #define MAX_CHANNEL_COUNT		8
 
 void intel_audio_hooks_init(struct drm_i915_private *dev_priv);
+void intel_audio_compute_eld(struct intel_crtc_state *crtc_state);
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 6a4d477e8a15..daaa08c0ee47 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2402,6 +2402,8 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 	}
 
+	intel_audio_compute_eld(pipe_config);
+
 	return 0;
 }
 
-- 
2.25.1

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Mitul Golani (3):
  drm/i915: Add has_audio to separate audio parameter in crtc_state
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |   4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       |  16 +--
 drivers/gpu/drm/i915/display/intel_audio.c    | 115 +++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_cdclk.c    |   6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |   4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |   2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |   4 +-
 .../drm/i915/display/intel_display_types.h    |  12 +-
 drivers/gpu/drm/i915/display/intel_dp.c       |   2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |   2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     |   2 +-
 drivers/gpu/drm/i915/display/intel_sdvo.c     |  10 +-
 12 files changed, 147 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate and channel
based on the capabilities of the audio source. This wrapper function
should encapsulate the logic for determining the supported rate and
channel and should return a set of SADs that are compatible with the
source.

--v1:
- call intel_audio_compute_eld in this commit as it is defined here

--v2:
- Handle case when max frequency is less than 32k.
- remove drm prefix.
- name change for parse_sad to eld_to_sad.

--v3:
- Use signed int wherever required.
- add debug trace when channel is limited.

--v4:
- remove inline from eld_to_sad.
- declare index outside of for loop with int type.
- Correct mask value calculation.
- remove drm_err, instead just return if eld parsing failed.
- remove unncessary typecast
- reduce indentation while parsing sad
- use intel_audio_compute_eld as static and call bandwidth calculation just before that.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 73 +++++++++++++++++++++-
 1 file changed, 72 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 79377e33a59b..eca9452849ff 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -806,6 +806,77 @@ static void calc_audio_config_params(struct intel_crtc_state *pipe_config)
 	pipe_config->audio.max_channel_count = 0;
 }
 
+static int sad_to_channels(const u8 *sad)
+{
+        return 1 + (sad[0] & 0x7);
+}
+
+static u8 *eld_to_sad(u8 *eld)
+{
+	int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static int get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+        int rate[] = {32000, 44100, 48000, 88000, 96000, 176000, 192000};
+        int mask = 0, index;
+
+        for (index = 0; index < ARRAY_SIZE(rate); index++) {
+                if (rate[index] > crtc_state->audio.max_rate)
+                        break;
+
+                mask |= 1 << index;
+
+                if (crtc_state->audio.max_rate != rate[index])
+                        continue;
+        }
+
+        return mask;
+}
+
+static void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+        struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+        u8 *eld, *sad;
+        int index, mask = 0;
+
+        eld = crtc_state->eld;
+        if (!eld)
+                return;
+
+        sad = eld_to_sad(eld);
+        if (!sad)
+                return;
+
+	calc_audio_config_params(crtc_state);
+
+        mask = get_supported_freq_mask(crtc_state);
+        for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+                /*
+                 * Respect source restricitions. Limit capabilities to a subset that is
+                 * supported both by the source and the sink.
+                 */
+                if (sad_to_channels(sad) >= crtc_state->audio.max_channel_count) {
+                        sad[0] &= ~0x7;
+                        sad[0] |= crtc_state->audio.max_channel_count - 1;
+                        drm_dbg_kms(&i915->drm, "Channel count is limited to %d\n",
+                                    crtc_state->audio.max_channel_count - 1);
+                }
+
+                sad[1] &= mask;
+        }
+}
+
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state)
@@ -827,7 +898,7 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 
 	crtc_state->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
 
-	calc_audio_config_params(crtc_state);
+	intel_audio_compute_eld(crtc_state);
 
 	return true;
 }
-- 
2.25.1

[Intel-gfx] [RFC 0/3] Get optimal audio frequency and channels

[Mitul Golani]

Currently we do not check if there is enough bandwidth for
audio, and what channels and freq it can really support.
Also sometimes there can be HW constraints e.g. GLK where audio
channels supported are only 2.

https://patchwork.freedesktop.org/series/107647/

Obtain the optimal audio rate and channel based on available display
timing constraints.

This can be achieved by:
- Retrieve the supported channel and rate information from SADs
- Adding audio-related config parameters in the CRTC state, such
as audio support, rate, and channel.
- Initializing the audio config parameters with the maximum supported
rate and channel by the audio source.
- Computing the SADs based on the audio source's capabilities.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>

Mitul Golani (3):
  drm/i915: Add has_audio to separate audio parameter in crtc_state
  drm/i915/display: Configure and initialize HDMI audio capabilities
  drm/i915/display: Add wrapper to Compute SAD

 drivers/gpu/drm/i915/display/g4x_dp.c         |   4 +-
 drivers/gpu/drm/i915/display/g4x_hdmi.c       |  16 +--
 drivers/gpu/drm/i915/display/intel_audio.c    | 115 +++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_cdclk.c    |   6 +-
 .../drm/i915/display/intel_crtc_state_dump.c  |   4 +-
 drivers/gpu/drm/i915/display/intel_ddi.c      |   2 +-
 drivers/gpu/drm/i915/display/intel_display.c  |   4 +-
 .../drm/i915/display/intel_display_types.h    |  12 +-
 drivers/gpu/drm/i915/display/intel_dp.c       |   2 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |   2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c     |   2 +-
 drivers/gpu/drm/i915/display/intel_sdvo.c     |  10 +-
 12 files changed, 147 insertions(+), 32 deletions(-)

-- 
2.25.1

[Intel-gfx] [RFC 3/3] drm/i915/display: Add wrapper to Compute SAD

[Mitul Golani]

Compute SADs that takes into account the supported rate
and channel based on the capabilities of the audio source.
This wrapper function should encapsulate the logic for
determining the supported rate and channel and should
return a set of SADs that are compatible with the source.

--v1:
- call intel_audio_compute_eld in this commit as it is
defined here

--v2:
- Handle case when max frequency is less than 32k.
- remove drm prefix.
- name change for parse_sad to eld_to_sad.

--v3:
- Use signed int wherever required.
- add debug trace when channel is limited.

--v4:
- remove inline from eld_to_sad.
- declare index outside of for loop with int type.
- Correct mask value calculation.
- remove drm_err, instead just return if eld parsing failed.
- remove unncessary typecast
- reduce indentation while parsing sad
- use intel_audio_compute_eld as static and call bandwidth
calculation just before that.

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 73 +++++++++++++++++++++-
 1 file changed, 72 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
index 79377e33a59b..9f4fc3f9b224 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -806,6 +806,77 @@ static void calc_audio_config_params(struct intel_crtc_state *pipe_config)
 	pipe_config->audio.max_channel_count = 0;
 }
 
+static int sad_to_channels(const u8 *sad)
+{
+	return 1 + (sad[0] & 0x7);
+}
+
+static u8 *eld_to_sad(u8 *eld)
+{
+	int ver, mnl;
+
+	ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT;
+	if (ver != 2 && ver != 31)
+		return NULL;
+
+	mnl = drm_eld_mnl(eld);
+	if (mnl > 16)
+		return NULL;
+
+	return eld + DRM_ELD_CEA_SAD(mnl, 0);
+}
+
+static int get_supported_freq_mask(struct intel_crtc_state *crtc_state)
+{
+	int rate[] = { 32000, 44100, 48000, 88000, 96000, 176000, 192000 };
+	int mask = 0, index;
+
+	for (index = 0; index < ARRAY_SIZE(rate); index++) {
+		if (rate[index] > crtc_state->audio.max_rate)
+			break;
+
+		mask |= 1 << index;
+
+		if (crtc_state->audio.max_rate != rate[index])
+			continue;
+	}
+
+	return mask;
+}
+
+static void intel_audio_compute_eld(struct intel_crtc_state *crtc_state)
+{
+	struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+	u8 *eld, *sad;
+	int index, mask = 0;
+
+	eld = crtc_state->eld;
+	if (!eld)
+		return;
+
+	sad = eld_to_sad(eld);
+	if (!sad)
+		return;
+
+	calc_audio_config_params(crtc_state);
+
+	mask = get_supported_freq_mask(crtc_state);
+	for (index = 0; index < drm_eld_sad_count(eld); index++, sad += 3) {
+		/*
+		 * Respect source restricitions. Limit capabilities to a subset that is
+		 * supported both by the source and the sink.
+		 */
+		if (sad_to_channels(sad) >= crtc_state->audio.max_channel_count) {
+			sad[0] &= ~0x7;
+			sad[0] |= crtc_state->audio.max_channel_count - 1;
+			drm_dbg_kms(&i915->drm, "Channel count is limited to %d\n",
+				    crtc_state->audio.max_channel_count - 1);
+		}
+
+		sad[1] &= mask;
+	}
+}
+
 bool intel_audio_compute_config(struct intel_encoder *encoder,
 				struct intel_crtc_state *crtc_state,
 				struct drm_connector_state *conn_state)
@@ -827,7 +898,7 @@ bool intel_audio_compute_config(struct intel_encoder *encoder,
 
 	crtc_state->eld[6] = drm_av_sync_delay(connector, adjusted_mode) / 2;
 
-	calc_audio_config_params(crtc_state);
+	intel_audio_compute_eld(crtc_state);
 
 	return true;
 }
-- 
2.25.1