[PATCH v2 12/18] drm/i915/audio: rewrite vlv/chv and gen 5-7 audio codec enable sequence

Jani Nikula
2014-10-27T14:27:46Z

Similar to the hsw/bdw enable sequence rewrite.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
drivers/gpu/drm/i915/intel_audio.c | 58 +++++++++++++++++---------------------
1 file changed, 26 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c
index 0c6ac169ab98..0159bd321d66 100644
--- a/drivers/gpu/drm/i915/intel_audio.c
+++ b/drivers/gpu/drm/i915/intel_audio.c
@@ -210,6 +210,10 @@ static void ilk_audio_codec_enable(struct drm_connector *connector,
{
struct drm_i915_private *dev_priv = connector->dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
+ struct intel_digital_port *intel_dig_port =
+ enc_to_dig_port(&encoder->base);
+ enum port port = intel_dig_port->port;
+ enum pipe pipe = intel_crtc->pipe;
uint8_t *eld = connector->eld;
uint32_t eldv;
uint32_t tmp;
@@ -218,8 +222,11 @@ static void ilk_audio_codec_enable(struct drm_connector *connector,
int aud_config;
int aud_cntl_st;
int aud_cntrl_st2;
- enum pipe pipe = intel_crtc->pipe;
- enum port port;
+
+ DRM_DEBUG_KMS("Enable audio codec on port %c, pipe %c, %u bytes ELD\n",
+ port_name(port), pipe_name(pipe), eld[2]);
+
+ intel_wait_for_vblank(dev_priv->dev, pipe);

if (HAS_PCH_IBX(connector->dev)) {
hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID(pipe);
@@ -238,57 +245,44 @@ static void ilk_audio_codec_enable(struct drm_connector *connector,
aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
}

- DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(pipe));
-
- if (IS_VALLEYVIEW(connector->dev)) {
- struct intel_digital_port *intel_dig_port;
-
- intel_dig_port = enc_to_dig_port(&encoder->base);
- port = intel_dig_port->port;
- } else {
- tmp = I915_READ(aud_cntl_st);
- port = (tmp >> 29) & DIP_PORT_SEL_MASK;
- /* DIP_Port_Select, 0x1 = PortB */
- }
-
- if (!port) {
- DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
- /* operate blindly on all ports */
+ if (WARN_ON(!port)) {
eldv = IBX_ELD_VALIDB;
eldv |= IBX_ELD_VALIDB << 4;
eldv |= IBX_ELD_VALIDB << 8;
} else {
- DRM_DEBUG_DRIVER("ELD on port %c\n", port_name(port));
eldv = IBX_ELD_VALIDB << ((port - 1) * 4);
}

- if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT))
- I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
- else
- I915_WRITE(aud_config, audio_config_hdmi_pixel_clock(mode));
-
- if (intel_eld_uptodate(connector,
- aud_cntrl_st2, eldv,
- aud_cntl_st, IBX_ELD_ADDRESS_MASK,
- hdmiw_hdmiedid))
- return;
-
+ /* Invalidate ELD */
tmp = I915_READ(aud_cntrl_st2);
tmp &= ~eldv;
I915_WRITE(aud_cntrl_st2, tmp);

+ /* Reset ELD write address */
tmp = I915_READ(aud_cntl_st);
tmp &= ~IBX_ELD_ADDRESS_MASK;
I915_WRITE(aud_cntl_st, tmp);

- len = min_t(int, eld[2], 21); /* 84 bytes of hw ELD buffer */
- DRM_DEBUG_DRIVER("ELD size %d\n", len);
+ /* Up to 84 bytes of hw ELD buffer */
+ len = min_t(int, eld[2], 21);
for (i = 0; i < len; i++)
I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));

+ /* ELD valid */
tmp = I915_READ(aud_cntrl_st2);
tmp |= eldv;
I915_WRITE(aud_cntrl_st2, tmp);
+
+ /* Enable timestamps */
+ tmp = I915_READ(aud_config);
+ tmp &= ~AUD_CONFIG_N_VALUE_INDEX;
+ tmp &= ~AUD_CONFIG_N_PROG_ENABLE;
+ tmp &= ~AUD_CONFIG_PIXEL_CLOCK_HDMI_MASK;
+ if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT))
+ tmp |= AUD_CONFIG_N_VALUE_INDEX;
+ else
+ tmp |= audio_config_hdmi_pixel_clock(mode);
+ I915_WRITE(aud_config, tmp);
}

/**
--
2.1.1