[PATCH v2 0/8] Try to fix MST regression with DDI IO power domains

[PATCH v2 0/8] Try to fix MST regression with DDI IO power domains

[Ander Conselvan de Oliveira]

Hi,

Here's a v2 of the fix for the regression caused by the recent DDI IO
power domain changes. This time with moar patches and actual testing.
The new patches remove the usage of crtc->config from intel_ddi.c and
that also removes the oops with encoder->crtc being NULL.

Ander Conselvan de Oliveira (8):
  drm/i915: Enable DDI IO power domains in the DP MST path
  drm/i915: Pass intel_crtc to fdi_link_train() hooks
  drm/i915: Pass intel_crtc to intel_lpt_pch_enable()
  drm/i915: Pass pipe_config to pch_enable() functions
  drm/i915: Pass pipe_config to fdi_link_train() functions
  drm/i915: Pass intel_crtc to DDI functions called from crtc en/disable
  drm/i915: Remove direct usages of intel_crtc->config from DDI code
  drm/i915: Remove duplicate DDI enabling logic from MST path

 drivers/gpu/drm/i915/i915_drv.h      |   3 +-
 drivers/gpu/drm/i915/intel_ddi.c     | 103 +++++++++++++++++------------------
 drivers/gpu/drm/i915/intel_display.c | 100 +++++++++++++++++-----------------
 drivers/gpu/drm/i915/intel_dp_mst.c  |  20 +------
 drivers/gpu/drm/i915/intel_drv.h     |  19 +++++--
 5 files changed, 117 insertions(+), 128 deletions(-)

-- 
2.9.3

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[PATCH v2 1/8] drm/i915: Enable DDI IO power domains in the DP MST path

[Ander Conselvan de Oliveira]

Commit 62b695662a24 ("drm/i915: Only enable DDI IO power domains after
enabling DPLL") changed how the DDI IO power domains get enabled, but
neglected the need to enable those domains when enabling a DP connector
with MST enabled, leading to

    Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler

Fixes: 62b695662a24 ("drm/i915: Only enable DDI IO power domains after enabling DPLL")
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_dp_mst.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index d94fd4b..a8334e1 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -163,6 +163,9 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 		intel_ddi_clk_select(&intel_dig_port->base,
 				     pipe_config->shared_dpll);
 
+		intel_display_power_get(dev_priv,
+					intel_dig_port->ddi_io_power_domain);
+
 		intel_prepare_dp_ddi_buffers(&intel_dig_port->base);
 		intel_dp_set_link_params(intel_dp,
 					 pipe_config->port_clock,
-- 
2.9.3

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Re: [PATCH v2 1/8] drm/i915: Enable DDI IO power domains in the DP MST path

[Ander Conselvan De Oliveira]

On Wed, 2017-03-01 at 16:13 +0200, Ander Conselvan de Oliveira wrote:
> Commit 62b695662a24 ("drm/i915: Only enable DDI IO power domains after
> enabling DPLL") changed how the DDI IO power domains get enabled, but
> neglected the need to enable those domains when enabling a DP connector
> with MST enabled, leading to
> 
>     Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler
> 
> Fixes: 62b695662a24 ("drm/i915: Only enable DDI IO power domains after enabling DPLL")
> Cc: David Weinehall <david.weinehall@linux.intel.com>
> Cc: Imre Deak <imre.deak@intel.com>
> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
> Cc: David Weinehall <david.weinehall@linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Jani Nikula <jani.nikula@linux.intel.com>
> Cc: intel-gfx@lists.freedesktop.org
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>

This was already

Reviewed-by: Imre Deak <imre.deak@intel.com>

Pushed this one so the regression is fixed. Thanks for reviewing.

Ander

> ---
>  drivers/gpu/drm/i915/intel_dp_mst.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
> index d94fd4b..a8334e1 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -163,6 +163,9 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
>  		intel_ddi_clk_select(&intel_dig_port->base,
>  				     pipe_config->shared_dpll);
>  
> +		intel_display_power_get(dev_priv,
> +					intel_dig_port->ddi_io_power_domain);
> +
>  		intel_prepare_dp_ddi_buffers(&intel_dig_port->base);
>  		intel_dp_set_link_params(intel_dp,
>  					 pipe_config->port_clock,
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[PATCH v2 2/8] drm/i915: Pass intel_crtc to fdi_link_train() hooks

[Ander Conselvan de Oliveira]

The implementation of the fdi_link_train() hooks need an intel_crtc so
just pass that instead of the generic crtc type.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      |  2 +-
 drivers/gpu/drm/i915/intel_ddi.c     | 13 ++++----
 drivers/gpu/drm/i915/intel_display.c | 63 +++++++++++++++++-------------------
 drivers/gpu/drm/i915/intel_drv.h     |  2 +-
 4 files changed, 37 insertions(+), 43 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index bc9283b..8b11cdf 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -669,7 +669,7 @@ struct drm_i915_display_funcs {
 				   struct intel_encoder *encoder,
 				   const struct drm_display_mode *adjusted_mode);
 	void (*audio_codec_disable)(struct intel_encoder *encoder);
-	void (*fdi_link_train)(struct drm_crtc *crtc);
+	void (*fdi_link_train)(struct intel_crtc *crtc);
 	void (*init_clock_gating)(struct drm_i915_private *dev_priv);
 	int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
 			  struct drm_framebuffer *fb,
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index a7c08d7..111f660 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -674,15 +674,14 @@ static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll *pll)
  * DDI A (which is used for eDP)
  */
 
-void hsw_fdi_link_train(struct drm_crtc *crtc)
+void hsw_fdi_link_train(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	struct intel_encoder *encoder;
 	u32 temp, i, rx_ctl_val, ddi_pll_sel;
 
-	for_each_encoder_on_crtc(dev, crtc, encoder) {
+	for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
 		WARN_ON(encoder->type != INTEL_OUTPUT_ANALOG);
 		intel_prepare_dp_ddi_buffers(encoder);
 	}
@@ -701,7 +700,7 @@ void hsw_fdi_link_train(struct drm_crtc *crtc)
 	/* Enable the PCH Receiver FDI PLL */
 	rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
 		     FDI_RX_PLL_ENABLE |
-		     FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+		     FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
 	I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
 	POSTING_READ(FDI_RX_CTL(PIPE_A));
 	udelay(220);
@@ -711,7 +710,7 @@ void hsw_fdi_link_train(struct drm_crtc *crtc)
 	I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
 
 	/* Configure Port Clock Select */
-	ddi_pll_sel = hsw_pll_to_ddi_pll_sel(intel_crtc->config->shared_dpll);
+	ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc->config->shared_dpll);
 	I915_WRITE(PORT_CLK_SEL(PORT_E), ddi_pll_sel);
 	WARN_ON(ddi_pll_sel != PORT_CLK_SEL_SPLL);
 
@@ -731,7 +730,7 @@ void hsw_fdi_link_train(struct drm_crtc *crtc)
 		 * port reversal bit */
 		I915_WRITE(DDI_BUF_CTL(PORT_E),
 			   DDI_BUF_CTL_ENABLE |
-			   ((intel_crtc->config->fdi_lanes - 1) << 1) |
+			   ((crtc->config->fdi_lanes - 1) << 1) |
 			   DDI_BUF_TRANS_SELECT(i / 2));
 		POSTING_READ(DDI_BUF_CTL(PORT_E));
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 7673d5d..c627f7e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3647,12 +3647,11 @@ static void intel_update_pipe_config(struct intel_crtc *crtc,
 	}
 }
 
-static void intel_fdi_normal_train(struct drm_crtc *crtc)
+static void intel_fdi_normal_train(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	int pipe = crtc->pipe;
 	i915_reg_t reg;
 	u32 temp;
 
@@ -3690,12 +3689,11 @@ static void intel_fdi_normal_train(struct drm_crtc *crtc)
 }
 
 /* The FDI link training functions for ILK/Ibexpeak. */
-static void ironlake_fdi_link_train(struct drm_crtc *crtc)
+static void ironlake_fdi_link_train(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	int pipe = crtc->pipe;
 	i915_reg_t reg;
 	u32 temp, tries;
 
@@ -3716,7 +3714,7 @@ static void ironlake_fdi_link_train(struct drm_crtc *crtc)
 	reg = FDI_TX_CTL(pipe);
 	temp = I915_READ(reg);
 	temp &= ~FDI_DP_PORT_WIDTH_MASK;
-	temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+	temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
 	temp &= ~FDI_LINK_TRAIN_NONE;
 	temp |= FDI_LINK_TRAIN_PATTERN_1;
 	I915_WRITE(reg, temp | FDI_TX_ENABLE);
@@ -3791,12 +3789,11 @@ static const int snb_b_fdi_train_param[] = {
 };
 
 /* The FDI link training functions for SNB/Cougarpoint. */
-static void gen6_fdi_link_train(struct drm_crtc *crtc)
+static void gen6_fdi_link_train(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	int pipe = crtc->pipe;
 	i915_reg_t reg;
 	u32 temp, i, retry;
 
@@ -3815,7 +3812,7 @@ static void gen6_fdi_link_train(struct drm_crtc *crtc)
 	reg = FDI_TX_CTL(pipe);
 	temp = I915_READ(reg);
 	temp &= ~FDI_DP_PORT_WIDTH_MASK;
-	temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+	temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
 	temp &= ~FDI_LINK_TRAIN_NONE;
 	temp |= FDI_LINK_TRAIN_PATTERN_1;
 	temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
@@ -3924,12 +3921,11 @@ static void gen6_fdi_link_train(struct drm_crtc *crtc)
 }
 
 /* Manual link training for Ivy Bridge A0 parts */
-static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
+static void ivb_manual_fdi_link_train(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	int pipe = crtc->pipe;
 	i915_reg_t reg;
 	u32 temp, i, j;
 
@@ -3967,7 +3963,7 @@ static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
 		reg = FDI_TX_CTL(pipe);
 		temp = I915_READ(reg);
 		temp &= ~FDI_DP_PORT_WIDTH_MASK;
-		temp |= FDI_DP_PORT_WIDTH(intel_crtc->config->fdi_lanes);
+		temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
 		temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
 		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
 		temp |= snb_b_fdi_train_param[j/2];
@@ -4438,12 +4434,12 @@ static void ivybridge_update_fdi_bc_bifurcation(struct intel_crtc *intel_crtc)
 
 /* Return which DP Port should be selected for Transcoder DP control */
 static enum port
-intel_trans_dp_port_sel(struct drm_crtc *crtc)
+intel_trans_dp_port_sel(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct intel_encoder *encoder;
 
-	for_each_encoder_on_crtc(dev, crtc, encoder) {
+	for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
 		if (encoder->type == INTEL_OUTPUT_DP ||
 		    encoder->type == INTEL_OUTPUT_EDP)
 			return enc_to_dig_port(&encoder->base)->port;
@@ -4460,18 +4456,17 @@ intel_trans_dp_port_sel(struct drm_crtc *crtc)
  *   - DP transcoding bits
  *   - transcoder
  */
-static void ironlake_pch_enable(struct drm_crtc *crtc)
+static void ironlake_pch_enable(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
+	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	int pipe = intel_crtc->pipe;
+	int pipe = crtc->pipe;
 	u32 temp;
 
 	assert_pch_transcoder_disabled(dev_priv, pipe);
 
 	if (IS_IVYBRIDGE(dev_priv))
-		ivybridge_update_fdi_bc_bifurcation(intel_crtc);
+		ivybridge_update_fdi_bc_bifurcation(crtc);
 
 	/* Write the TU size bits before fdi link training, so that error
 	 * detection works. */
@@ -4489,7 +4484,7 @@ static void ironlake_pch_enable(struct drm_crtc *crtc)
 		temp = I915_READ(PCH_DPLL_SEL);
 		temp |= TRANS_DPLL_ENABLE(pipe);
 		sel = TRANS_DPLLB_SEL(pipe);
-		if (intel_crtc->config->shared_dpll ==
+		if (crtc->config->shared_dpll ==
 		    intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
 			temp |= sel;
 		else
@@ -4504,19 +4499,19 @@ static void ironlake_pch_enable(struct drm_crtc *crtc)
 	 * Note that enable_shared_dpll tries to do the right thing, but
 	 * get_shared_dpll unconditionally resets the pll - we need that to have
 	 * the right LVDS enable sequence. */
-	intel_enable_shared_dpll(intel_crtc);
+	intel_enable_shared_dpll(crtc);
 
 	/* set transcoder timing, panel must allow it */
 	assert_panel_unlocked(dev_priv, pipe);
-	ironlake_pch_transcoder_set_timings(intel_crtc, pipe);
+	ironlake_pch_transcoder_set_timings(crtc, pipe);
 
 	intel_fdi_normal_train(crtc);
 
 	/* For PCH DP, enable TRANS_DP_CTL */
 	if (HAS_PCH_CPT(dev_priv) &&
-	    intel_crtc_has_dp_encoder(intel_crtc->config)) {
+	    intel_crtc_has_dp_encoder(crtc->config)) {
 		const struct drm_display_mode *adjusted_mode =
-			&intel_crtc->config->base.adjusted_mode;
+			&crtc->config->base.adjusted_mode;
 		u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
 		i915_reg_t reg = TRANS_DP_CTL(pipe);
 		temp = I915_READ(reg);
@@ -5290,7 +5285,7 @@ static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
 	intel_enable_pipe(intel_crtc);
 
 	if (intel_crtc->config->has_pch_encoder)
-		ironlake_pch_enable(crtc);
+		ironlake_pch_enable(intel_crtc);
 
 	assert_vblank_disabled(crtc);
 	drm_crtc_vblank_on(crtc);
@@ -5372,7 +5367,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 	intel_encoders_pre_enable(crtc, pipe_config, old_state);
 
 	if (intel_crtc->config->has_pch_encoder)
-		dev_priv->display.fdi_link_train(crtc);
+		dev_priv->display.fdi_link_train(intel_crtc);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
 		intel_ddi_enable_pipe_clock(intel_crtc);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 907fb00..ace5608 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1225,7 +1225,7 @@ void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
 				struct intel_crtc_state *old_crtc_state,
 				struct drm_connector_state *old_conn_state);
 void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
-void hsw_fdi_link_train(struct drm_crtc *crtc);
+void hsw_fdi_link_train(struct intel_crtc *crtc);
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
-- 
2.9.3

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[PATCH v2 3/8] drm/i915: Pass intel_crtc to intel_lpt_pch_enable()

[Ander Conselvan de Oliveira]

The function intel_lpt_pch_enable() needs an intel_crtc so pass that
instead of the generic crtc type.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c627f7e..45415f0 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4250,10 +4250,10 @@ void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
 }
 
 /* Program iCLKIP clock to the desired frequency */
-static void lpt_program_iclkip(struct drm_crtc *crtc)
+static void lpt_program_iclkip(struct intel_crtc *crtc)
 {
-	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
-	int clock = to_intel_crtc(crtc)->config->base.adjusted_mode.crtc_clock;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	int clock = crtc->config->base.adjusted_mode.crtc_clock;
 	u32 divsel, phaseinc, auxdiv, phasedir = 0;
 	u32 temp;
 
@@ -4546,19 +4546,17 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 	ironlake_enable_pch_transcoder(dev_priv, pipe);
 }
 
-static void lpt_pch_enable(struct drm_crtc *crtc)
+static void lpt_pch_enable(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
 
 	assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
 
 	lpt_program_iclkip(crtc);
 
 	/* Set transcoder timing. */
-	ironlake_pch_transcoder_set_timings(intel_crtc, PIPE_A);
+	ironlake_pch_transcoder_set_timings(crtc, PIPE_A);
 
 	lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
 }
@@ -5395,7 +5393,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 		intel_enable_pipe(intel_crtc);
 
 	if (intel_crtc->config->has_pch_encoder)
-		lpt_pch_enable(crtc);
+		lpt_pch_enable(intel_crtc);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
 		intel_ddi_set_vc_payload_alloc(crtc, true);
-- 
2.9.3

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[PATCH v2 4/8] drm/i915: Pass pipe_config to pch_enable() functions

[Ander Conselvan de Oliveira]

Using crtc->config directly is being removed in favor of passing a
pipe_config. Follow the trend and pass pipe_config to pch_enable()
functions.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 45415f0..aea302b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4456,7 +4456,8 @@ intel_trans_dp_port_sel(struct intel_crtc *crtc)
  *   - DP transcoding bits
  *   - transcoder
  */
-static void ironlake_pch_enable(struct intel_crtc *crtc)
+static void ironlake_pch_enable(struct intel_crtc *crtc,
+				struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -4484,7 +4485,7 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 		temp = I915_READ(PCH_DPLL_SEL);
 		temp |= TRANS_DPLL_ENABLE(pipe);
 		sel = TRANS_DPLLB_SEL(pipe);
-		if (crtc->config->shared_dpll ==
+		if (pipe_config->shared_dpll ==
 		    intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
 			temp |= sel;
 		else
@@ -4509,9 +4510,9 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 
 	/* For PCH DP, enable TRANS_DP_CTL */
 	if (HAS_PCH_CPT(dev_priv) &&
-	    intel_crtc_has_dp_encoder(crtc->config)) {
+	    intel_crtc_has_dp_encoder(pipe_config)) {
 		const struct drm_display_mode *adjusted_mode =
-			&crtc->config->base.adjusted_mode;
+			&pipe_config->base.adjusted_mode;
 		u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
 		i915_reg_t reg = TRANS_DP_CTL(pipe);
 		temp = I915_READ(reg);
@@ -4546,10 +4547,11 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 	ironlake_enable_pch_transcoder(dev_priv, pipe);
 }
 
-static void lpt_pch_enable(struct intel_crtc *crtc)
+static void lpt_pch_enable(struct intel_crtc *crtc,
+			   struct intel_crtc_state *pipe_config)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 
 	assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
 
@@ -5283,7 +5285,7 @@ static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
 	intel_enable_pipe(intel_crtc);
 
 	if (intel_crtc->config->has_pch_encoder)
-		ironlake_pch_enable(intel_crtc);
+		ironlake_pch_enable(intel_crtc, pipe_config);
 
 	assert_vblank_disabled(crtc);
 	drm_crtc_vblank_on(crtc);
@@ -5393,7 +5395,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 		intel_enable_pipe(intel_crtc);
 
 	if (intel_crtc->config->has_pch_encoder)
-		lpt_pch_enable(intel_crtc);
+		lpt_pch_enable(intel_crtc, pipe_config);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
 		intel_ddi_set_vc_payload_alloc(crtc, true);
-- 
2.9.3

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Re: [PATCH v2 4/8] drm/i915: Pass pipe_config to pch_enable() functions

[Ville Syrjälä]

On Wed, Mar 01, 2017 at 04:13:14PM +0200, Ander Conselvan de Oliveira wrote:
> Using crtc->config directly is being removed in favor of passing a
> pipe_config. Follow the trend and pass pipe_config to pch_enable()
> functions.
> 
> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 18 ++++++++++--------
>  1 file changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 45415f0..aea302b 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4456,7 +4456,8 @@ intel_trans_dp_port_sel(struct intel_crtc *crtc)
>   *   - DP transcoding bits
>   *   - transcoder
>   */
> -static void ironlake_pch_enable(struct intel_crtc *crtc)
> +static void ironlake_pch_enable(struct intel_crtc *crtc,
> +				struct intel_crtc_state *pipe_config)

const

Also s/pipe_config/crtc_state/ perhaps? IMO we should try to start
unifying our naming convention to reduce the confusion a bit.

You could also pass just the state since you can dig up the crtc from
there.

>  {
>  	struct drm_device *dev = crtc->base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
> @@ -4484,7 +4485,7 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
>  		temp = I915_READ(PCH_DPLL_SEL);
>  		temp |= TRANS_DPLL_ENABLE(pipe);
>  		sel = TRANS_DPLLB_SEL(pipe);
> -		if (crtc->config->shared_dpll ==
> +		if (pipe_config->shared_dpll ==
>  		    intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
>  			temp |= sel;
>  		else
> @@ -4509,9 +4510,9 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
>  
>  	/* For PCH DP, enable TRANS_DP_CTL */
>  	if (HAS_PCH_CPT(dev_priv) &&
> -	    intel_crtc_has_dp_encoder(crtc->config)) {
> +	    intel_crtc_has_dp_encoder(pipe_config)) {
>  		const struct drm_display_mode *adjusted_mode =
> -			&crtc->config->base.adjusted_mode;
> +			&pipe_config->base.adjusted_mode;
>  		u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
>  		i915_reg_t reg = TRANS_DP_CTL(pipe);
>  		temp = I915_READ(reg);
> @@ -4546,10 +4547,11 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
>  	ironlake_enable_pch_transcoder(dev_priv, pipe);
>  }
>  
> -static void lpt_pch_enable(struct intel_crtc *crtc)
> +static void lpt_pch_enable(struct intel_crtc *crtc,
> +			   struct intel_crtc_state *pipe_config)

ditto

Anyway looks correct, so w/ or w/o the extra ideas this is
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

>  {
>  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> -	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
> +	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
>  
>  	assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
>  
> @@ -5283,7 +5285,7 @@ static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
>  	intel_enable_pipe(intel_crtc);
>  
>  	if (intel_crtc->config->has_pch_encoder)
> -		ironlake_pch_enable(intel_crtc);
> +		ironlake_pch_enable(intel_crtc, pipe_config);
>  
>  	assert_vblank_disabled(crtc);
>  	drm_crtc_vblank_on(crtc);
> @@ -5393,7 +5395,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
>  		intel_enable_pipe(intel_crtc);
>  
>  	if (intel_crtc->config->has_pch_encoder)
> -		lpt_pch_enable(intel_crtc);
> +		lpt_pch_enable(intel_crtc, pipe_config);
>  
>  	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
>  		intel_ddi_set_vc_payload_alloc(crtc, true);
> -- 
> 2.9.3

-- 
Ville Syrjälä
Intel OTC
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[PATCH] drm/i915: Pass pipe_config to pch_enable() functions

[Ander Conselvan de Oliveira]

Using crtc->config directly is being removed in favor of passing a
pipe_config. Follow the trend and pass pipe_config to pch_enable()
functions.

v2: s/pipe_config/crtc_state/ (Ville)
  - constify crtc_state. (Ville)
  - take crtc from crtc_state. (Ville)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bfb99c6..9dc6a1b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4456,8 +4456,9 @@ intel_trans_dp_port_sel(struct intel_crtc *crtc)
  *   - DP transcoding bits
  *   - transcoder
  */
-static void ironlake_pch_enable(struct intel_crtc *crtc)
+static void ironlake_pch_enable(const struct intel_crtc_state *crtc_state)
 {
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	int pipe = crtc->pipe;
@@ -4484,7 +4485,7 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 		temp = I915_READ(PCH_DPLL_SEL);
 		temp |= TRANS_DPLL_ENABLE(pipe);
 		sel = TRANS_DPLLB_SEL(pipe);
-		if (crtc->config->shared_dpll ==
+		if (crtc_state->shared_dpll ==
 		    intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
 			temp |= sel;
 		else
@@ -4509,9 +4510,9 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 
 	/* For PCH DP, enable TRANS_DP_CTL */
 	if (HAS_PCH_CPT(dev_priv) &&
-	    intel_crtc_has_dp_encoder(crtc->config)) {
+	    intel_crtc_has_dp_encoder(crtc_state)) {
 		const struct drm_display_mode *adjusted_mode =
-			&crtc->config->base.adjusted_mode;
+			&crtc_state->base.adjusted_mode;
 		u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
 		i915_reg_t reg = TRANS_DP_CTL(pipe);
 		temp = I915_READ(reg);
@@ -4546,10 +4547,11 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
 	ironlake_enable_pch_transcoder(dev_priv, pipe);
 }
 
-static void lpt_pch_enable(struct intel_crtc *crtc)
+static void lpt_pch_enable(const struct intel_crtc_state *crtc_state)
 {
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 
 	assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
 
@@ -5283,7 +5285,7 @@ static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
 	intel_enable_pipe(intel_crtc);
 
 	if (intel_crtc->config->has_pch_encoder)
-		ironlake_pch_enable(intel_crtc);
+		ironlake_pch_enable(pipe_config);
 
 	assert_vblank_disabled(crtc);
 	drm_crtc_vblank_on(crtc);
@@ -5393,7 +5395,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 		intel_enable_pipe(intel_crtc);
 
 	if (intel_crtc->config->has_pch_encoder)
-		lpt_pch_enable(intel_crtc);
+		lpt_pch_enable(pipe_config);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
 		intel_ddi_set_vc_payload_alloc(crtc, true);
-- 
2.9.3

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Re: [PATCH] drm/i915: Pass pipe_config to pch_enable() functions

[Ville Syrjälä]

On Thu, Mar 02, 2017 at 11:43:27AM +0200, Ander Conselvan de Oliveira wrote:
> Using crtc->config directly is being removed in favor of passing a
> pipe_config. Follow the trend and pass pipe_config to pch_enable()
> functions.
> 
> v2: s/pipe_config/crtc_state/ (Ville)
>   - constify crtc_state. (Ville)
>   - take crtc from crtc_state. (Ville)

Neat. The other patches in the series could also benefit from these
tricks. I'd like to at least see the consts sprinkled around to make
people think twice before they touch the state in the wrong place.
The other changes are optional.

With the consts, patches 2-7 are also 
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 18 ++++++++++--------
>  1 file changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index bfb99c6..9dc6a1b 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4456,8 +4456,9 @@ intel_trans_dp_port_sel(struct intel_crtc *crtc)
>   *   - DP transcoding bits
>   *   - transcoder
>   */
> -static void ironlake_pch_enable(struct intel_crtc *crtc)
> +static void ironlake_pch_enable(const struct intel_crtc_state *crtc_state)
>  {
> +	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
>  	struct drm_device *dev = crtc->base.dev;
>  	struct drm_i915_private *dev_priv = to_i915(dev);
>  	int pipe = crtc->pipe;
> @@ -4484,7 +4485,7 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
>  		temp = I915_READ(PCH_DPLL_SEL);
>  		temp |= TRANS_DPLL_ENABLE(pipe);
>  		sel = TRANS_DPLLB_SEL(pipe);
> -		if (crtc->config->shared_dpll ==
> +		if (crtc_state->shared_dpll ==
>  		    intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
>  			temp |= sel;
>  		else
> @@ -4509,9 +4510,9 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
>  
>  	/* For PCH DP, enable TRANS_DP_CTL */
>  	if (HAS_PCH_CPT(dev_priv) &&
> -	    intel_crtc_has_dp_encoder(crtc->config)) {
> +	    intel_crtc_has_dp_encoder(crtc_state)) {
>  		const struct drm_display_mode *adjusted_mode =
> -			&crtc->config->base.adjusted_mode;
> +			&crtc_state->base.adjusted_mode;
>  		u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
>  		i915_reg_t reg = TRANS_DP_CTL(pipe);
>  		temp = I915_READ(reg);
> @@ -4546,10 +4547,11 @@ static void ironlake_pch_enable(struct intel_crtc *crtc)
>  	ironlake_enable_pch_transcoder(dev_priv, pipe);
>  }
>  
> -static void lpt_pch_enable(struct intel_crtc *crtc)
> +static void lpt_pch_enable(const struct intel_crtc_state *crtc_state)
>  {
> +	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
>  	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> -	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
> +	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
>  
>  	assert_pch_transcoder_disabled(dev_priv, TRANSCODER_A);
>  
> @@ -5283,7 +5285,7 @@ static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
>  	intel_enable_pipe(intel_crtc);
>  
>  	if (intel_crtc->config->has_pch_encoder)
> -		ironlake_pch_enable(intel_crtc);
> +		ironlake_pch_enable(pipe_config);
>  
>  	assert_vblank_disabled(crtc);
>  	drm_crtc_vblank_on(crtc);
> @@ -5393,7 +5395,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
>  		intel_enable_pipe(intel_crtc);
>  
>  	if (intel_crtc->config->has_pch_encoder)
> -		lpt_pch_enable(intel_crtc);
> +		lpt_pch_enable(pipe_config);
>  
>  	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
>  		intel_ddi_set_vc_payload_alloc(crtc, true);
> -- 
> 2.9.3

-- 
Ville Syrjälä
Intel OTC
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[PATCH v2 5/8] drm/i915: Pass pipe_config to fdi_link_train() functions

[Ander Conselvan de Oliveira]

It is preferred to pass pipe_config to functions instead of accessing
crtc->config directly. Follow suit and pass pipe_config to the fdi link
train functions.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      |  3 ++-
 drivers/gpu/drm/i915/intel_ddi.c     |  9 +++++----
 drivers/gpu/drm/i915/intel_display.c | 19 +++++++++++--------
 drivers/gpu/drm/i915/intel_drv.h     |  3 ++-
 4 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8b11cdf..82d3d16 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -669,7 +669,8 @@ struct drm_i915_display_funcs {
 				   struct intel_encoder *encoder,
 				   const struct drm_display_mode *adjusted_mode);
 	void (*audio_codec_disable)(struct intel_encoder *encoder);
-	void (*fdi_link_train)(struct intel_crtc *crtc);
+	void (*fdi_link_train)(struct intel_crtc *crtc,
+			       struct intel_crtc_state *pipe_config);
 	void (*init_clock_gating)(struct drm_i915_private *dev_priv);
 	int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
 			  struct drm_framebuffer *fb,
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 111f660..ccff024 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -674,7 +674,8 @@ static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll *pll)
  * DDI A (which is used for eDP)
  */
 
-void hsw_fdi_link_train(struct intel_crtc *crtc)
+void hsw_fdi_link_train(struct intel_crtc *crtc,
+			struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -700,7 +701,7 @@ void hsw_fdi_link_train(struct intel_crtc *crtc)
 	/* Enable the PCH Receiver FDI PLL */
 	rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
 		     FDI_RX_PLL_ENABLE |
-		     FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+		     FDI_DP_PORT_WIDTH(pipe_config->fdi_lanes);
 	I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
 	POSTING_READ(FDI_RX_CTL(PIPE_A));
 	udelay(220);
@@ -710,7 +711,7 @@ void hsw_fdi_link_train(struct intel_crtc *crtc)
 	I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
 
 	/* Configure Port Clock Select */
-	ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc->config->shared_dpll);
+	ddi_pll_sel = hsw_pll_to_ddi_pll_sel(pipe_config->shared_dpll);
 	I915_WRITE(PORT_CLK_SEL(PORT_E), ddi_pll_sel);
 	WARN_ON(ddi_pll_sel != PORT_CLK_SEL_SPLL);
 
@@ -730,7 +731,7 @@ void hsw_fdi_link_train(struct intel_crtc *crtc)
 		 * port reversal bit */
 		I915_WRITE(DDI_BUF_CTL(PORT_E),
 			   DDI_BUF_CTL_ENABLE |
-			   ((crtc->config->fdi_lanes - 1) << 1) |
+			   ((pipe_config->fdi_lanes - 1) << 1) |
 			   DDI_BUF_TRANS_SELECT(i / 2));
 		POSTING_READ(DDI_BUF_CTL(PORT_E));
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index aea302b..16822ef 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3689,7 +3689,8 @@ static void intel_fdi_normal_train(struct intel_crtc *crtc)
 }
 
 /* The FDI link training functions for ILK/Ibexpeak. */
-static void ironlake_fdi_link_train(struct intel_crtc *crtc)
+static void ironlake_fdi_link_train(struct intel_crtc *crtc,
+				    struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3714,7 +3715,7 @@ static void ironlake_fdi_link_train(struct intel_crtc *crtc)
 	reg = FDI_TX_CTL(pipe);
 	temp = I915_READ(reg);
 	temp &= ~FDI_DP_PORT_WIDTH_MASK;
-	temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+	temp |= FDI_DP_PORT_WIDTH(pipe_config->fdi_lanes);
 	temp &= ~FDI_LINK_TRAIN_NONE;
 	temp |= FDI_LINK_TRAIN_PATTERN_1;
 	I915_WRITE(reg, temp | FDI_TX_ENABLE);
@@ -3789,7 +3790,8 @@ static const int snb_b_fdi_train_param[] = {
 };
 
 /* The FDI link training functions for SNB/Cougarpoint. */
-static void gen6_fdi_link_train(struct intel_crtc *crtc)
+static void gen6_fdi_link_train(struct intel_crtc *crtc,
+				struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3812,7 +3814,7 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc)
 	reg = FDI_TX_CTL(pipe);
 	temp = I915_READ(reg);
 	temp &= ~FDI_DP_PORT_WIDTH_MASK;
-	temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+	temp |= FDI_DP_PORT_WIDTH(pipe_config->fdi_lanes);
 	temp &= ~FDI_LINK_TRAIN_NONE;
 	temp |= FDI_LINK_TRAIN_PATTERN_1;
 	temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
@@ -3921,7 +3923,8 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc)
 }
 
 /* Manual link training for Ivy Bridge A0 parts */
-static void ivb_manual_fdi_link_train(struct intel_crtc *crtc)
+static void ivb_manual_fdi_link_train(struct intel_crtc *crtc,
+				      struct intel_crtc_state *pipe_config)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3963,7 +3966,7 @@ static void ivb_manual_fdi_link_train(struct intel_crtc *crtc)
 		reg = FDI_TX_CTL(pipe);
 		temp = I915_READ(reg);
 		temp &= ~FDI_DP_PORT_WIDTH_MASK;
-		temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+		temp |= FDI_DP_PORT_WIDTH(pipe_config->fdi_lanes);
 		temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
 		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
 		temp |= snb_b_fdi_train_param[j/2];
@@ -4475,7 +4478,7 @@ static void ironlake_pch_enable(struct intel_crtc *crtc,
 		   I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
 
 	/* For PCH output, training FDI link */
-	dev_priv->display.fdi_link_train(crtc);
+	dev_priv->display.fdi_link_train(crtc, pipe_config);
 
 	/* We need to program the right clock selection before writing the pixel
 	 * mutliplier into the DPLL. */
@@ -5367,7 +5370,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 	intel_encoders_pre_enable(crtc, pipe_config, old_state);
 
 	if (intel_crtc->config->has_pch_encoder)
-		dev_priv->display.fdi_link_train(intel_crtc);
+		dev_priv->display.fdi_link_train(intel_crtc, pipe_config);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
 		intel_ddi_enable_pipe_clock(intel_crtc);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index ace5608..330cf7f 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1225,7 +1225,8 @@ void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
 				struct intel_crtc_state *old_crtc_state,
 				struct drm_connector_state *old_conn_state);
 void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
-void hsw_fdi_link_train(struct intel_crtc *crtc);
+void hsw_fdi_link_train(struct intel_crtc *crtc,
+			struct intel_crtc_state *pipe_config);
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
-- 
2.9.3

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[PATCH] drm/i915: Pass pipe_config to fdi_link_train() functions

[Ander Conselvan de Oliveira]

It is preferred to pass pipe_config to functions instead of accessing
crtc->config directly. Follow suit and pass pipe_config to the fdi link
train functions.

v2: Add const; s/pipe_config/crtc_state/ (Ville)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      |  3 ++-
 drivers/gpu/drm/i915/intel_ddi.c     |  9 +++++----
 drivers/gpu/drm/i915/intel_display.c | 19 +++++++++++--------
 drivers/gpu/drm/i915/intel_drv.h     |  3 ++-
 4 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b2be1a4..9b2a46a6 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -669,7 +669,8 @@ struct drm_i915_display_funcs {
 				   struct intel_encoder *encoder,
 				   const struct drm_display_mode *adjusted_mode);
 	void (*audio_codec_disable)(struct intel_encoder *encoder);
-	void (*fdi_link_train)(struct intel_crtc *crtc);
+	void (*fdi_link_train)(struct intel_crtc *crtc,
+			       const struct intel_crtc_state *crtc_state);
 	void (*init_clock_gating)(struct drm_i915_private *dev_priv);
 	int (*queue_flip)(struct drm_device *dev, struct drm_crtc *crtc,
 			  struct drm_framebuffer *fb,
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 111f660..a320378 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -674,7 +674,8 @@ static uint32_t hsw_pll_to_ddi_pll_sel(struct intel_shared_dpll *pll)
  * DDI A (which is used for eDP)
  */
 
-void hsw_fdi_link_train(struct intel_crtc *crtc)
+void hsw_fdi_link_train(struct intel_crtc *crtc,
+			const struct intel_crtc_state *crtc_state)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -700,7 +701,7 @@ void hsw_fdi_link_train(struct intel_crtc *crtc)
 	/* Enable the PCH Receiver FDI PLL */
 	rx_ctl_val = dev_priv->fdi_rx_config | FDI_RX_ENHANCE_FRAME_ENABLE |
 		     FDI_RX_PLL_ENABLE |
-		     FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+		     FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
 	I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
 	POSTING_READ(FDI_RX_CTL(PIPE_A));
 	udelay(220);
@@ -710,7 +711,7 @@ void hsw_fdi_link_train(struct intel_crtc *crtc)
 	I915_WRITE(FDI_RX_CTL(PIPE_A), rx_ctl_val);
 
 	/* Configure Port Clock Select */
-	ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc->config->shared_dpll);
+	ddi_pll_sel = hsw_pll_to_ddi_pll_sel(crtc_state->shared_dpll);
 	I915_WRITE(PORT_CLK_SEL(PORT_E), ddi_pll_sel);
 	WARN_ON(ddi_pll_sel != PORT_CLK_SEL_SPLL);
 
@@ -730,7 +731,7 @@ void hsw_fdi_link_train(struct intel_crtc *crtc)
 		 * port reversal bit */
 		I915_WRITE(DDI_BUF_CTL(PORT_E),
 			   DDI_BUF_CTL_ENABLE |
-			   ((crtc->config->fdi_lanes - 1) << 1) |
+			   ((crtc_state->fdi_lanes - 1) << 1) |
 			   DDI_BUF_TRANS_SELECT(i / 2));
 		POSTING_READ(DDI_BUF_CTL(PORT_E));
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9dc6a1b..e516a2d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3689,7 +3689,8 @@ static void intel_fdi_normal_train(struct intel_crtc *crtc)
 }
 
 /* The FDI link training functions for ILK/Ibexpeak. */
-static void ironlake_fdi_link_train(struct intel_crtc *crtc)
+static void ironlake_fdi_link_train(struct intel_crtc *crtc,
+				    const struct intel_crtc_state *crtc_state)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3714,7 +3715,7 @@ static void ironlake_fdi_link_train(struct intel_crtc *crtc)
 	reg = FDI_TX_CTL(pipe);
 	temp = I915_READ(reg);
 	temp &= ~FDI_DP_PORT_WIDTH_MASK;
-	temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+	temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
 	temp &= ~FDI_LINK_TRAIN_NONE;
 	temp |= FDI_LINK_TRAIN_PATTERN_1;
 	I915_WRITE(reg, temp | FDI_TX_ENABLE);
@@ -3789,7 +3790,8 @@ static const int snb_b_fdi_train_param[] = {
 };
 
 /* The FDI link training functions for SNB/Cougarpoint. */
-static void gen6_fdi_link_train(struct intel_crtc *crtc)
+static void gen6_fdi_link_train(struct intel_crtc *crtc,
+				const struct intel_crtc_state *crtc_state)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3812,7 +3814,7 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc)
 	reg = FDI_TX_CTL(pipe);
 	temp = I915_READ(reg);
 	temp &= ~FDI_DP_PORT_WIDTH_MASK;
-	temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+	temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
 	temp &= ~FDI_LINK_TRAIN_NONE;
 	temp |= FDI_LINK_TRAIN_PATTERN_1;
 	temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
@@ -3921,7 +3923,8 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc)
 }
 
 /* Manual link training for Ivy Bridge A0 parts */
-static void ivb_manual_fdi_link_train(struct intel_crtc *crtc)
+static void ivb_manual_fdi_link_train(struct intel_crtc *crtc,
+				      const struct intel_crtc_state *crtc_state)
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
@@ -3963,7 +3966,7 @@ static void ivb_manual_fdi_link_train(struct intel_crtc *crtc)
 		reg = FDI_TX_CTL(pipe);
 		temp = I915_READ(reg);
 		temp &= ~FDI_DP_PORT_WIDTH_MASK;
-		temp |= FDI_DP_PORT_WIDTH(crtc->config->fdi_lanes);
+		temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
 		temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
 		temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
 		temp |= snb_b_fdi_train_param[j/2];
@@ -4475,7 +4478,7 @@ static void ironlake_pch_enable(const struct intel_crtc_state *crtc_state)
 		   I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
 
 	/* For PCH output, training FDI link */
-	dev_priv->display.fdi_link_train(crtc);
+	dev_priv->display.fdi_link_train(crtc, crtc_state);
 
 	/* We need to program the right clock selection before writing the pixel
 	 * mutliplier into the DPLL. */
@@ -5367,7 +5370,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 	intel_encoders_pre_enable(crtc, pipe_config, old_state);
 
 	if (intel_crtc->config->has_pch_encoder)
-		dev_priv->display.fdi_link_train(intel_crtc);
+		dev_priv->display.fdi_link_train(intel_crtc, pipe_config);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
 		intel_ddi_enable_pipe_clock(intel_crtc);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 007e859..1e8c256 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1225,7 +1225,8 @@ void intel_ddi_fdi_post_disable(struct intel_encoder *intel_encoder,
 				struct intel_crtc_state *old_crtc_state,
 				struct drm_connector_state *old_conn_state);
 void intel_prepare_dp_ddi_buffers(struct intel_encoder *encoder);
-void hsw_fdi_link_train(struct intel_crtc *crtc);
+void hsw_fdi_link_train(struct intel_crtc *crtc,
+			const struct intel_crtc_state *crtc_state);
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
-- 
2.9.3

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

[PATCH v2 6/8] drm/i915: Pass intel_crtc to DDI functions called from crtc en/disable

[Ander Conselvan de Oliveira]

Pass intel_crtc to functions intel_ddi_enable_transcoder_func(),
intel_ddi_set_pipe_settings() and intel_ddi_set_vc_payload_alloc(),
instead of the generic crtc type. By changing the functions
intel_ddi_get_crtc_encoder() so that it receives an intel_crtc
parameter, there is no need for the drm_crtc in the callers.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c     | 62 ++++++++++++++++--------------------
 drivers/gpu/drm/i915/intel_display.c |  8 ++---
 drivers/gpu/drm/i915/intel_drv.h     |  6 ++--
 3 files changed, 34 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index ccff024..5e21bb5 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -818,21 +818,20 @@ void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder)
 }
 
 static struct intel_encoder *
-intel_ddi_get_crtc_encoder(struct drm_crtc *crtc)
+intel_ddi_get_crtc_encoder(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	struct drm_device *dev = crtc->base.dev;
 	struct intel_encoder *intel_encoder, *ret = NULL;
 	int num_encoders = 0;
 
-	for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
+	for_each_encoder_on_crtc(dev, &crtc->base, intel_encoder) {
 		ret = intel_encoder;
 		num_encoders++;
 	}
 
 	if (num_encoders != 1)
 		WARN(1, "%d encoders on crtc for pipe %c\n", num_encoders,
-		     pipe_name(intel_crtc->pipe));
+		     pipe_name(crtc->pipe));
 
 	BUG_ON(ret == NULL);
 	return ret;
@@ -1194,12 +1193,11 @@ bool intel_ddi_pll_select(struct intel_crtc *intel_crtc,
 					  intel_encoder);
 }
 
-void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
+void intel_ddi_set_pipe_settings(struct intel_crtc *crtc)
 {
-	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
 	int type = intel_encoder->type;
 	uint32_t temp;
 
@@ -1207,7 +1205,7 @@ void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
 		WARN_ON(transcoder_is_dsi(cpu_transcoder));
 
 		temp = TRANS_MSA_SYNC_CLK;
-		switch (intel_crtc->config->pipe_bpp) {
+		switch (crtc->config->pipe_bpp) {
 		case 18:
 			temp |= TRANS_MSA_6_BPC;
 			break;
@@ -1227,12 +1225,10 @@ void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
 	}
 }
 
-void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state)
+void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc, bool state)
 {
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
 	uint32_t temp;
 	temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
 	if (state == true)
@@ -1242,14 +1238,12 @@ void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state)
 	I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
 }
 
-void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
+void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc)
 {
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 	struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	enum pipe pipe = intel_crtc->pipe;
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
+	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
 	enum port port = intel_ddi_get_encoder_port(intel_encoder);
 	int type = intel_encoder->type;
 	uint32_t temp;
@@ -1258,7 +1252,7 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
 	temp = TRANS_DDI_FUNC_ENABLE;
 	temp |= TRANS_DDI_SELECT_PORT(port);
 
-	switch (intel_crtc->config->pipe_bpp) {
+	switch (crtc->config->pipe_bpp) {
 	case 18:
 		temp |= TRANS_DDI_BPC_6;
 		break;
@@ -1275,9 +1269,9 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
 		BUG();
 	}
 
-	if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
+	if (crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
 		temp |= TRANS_DDI_PVSYNC;
-	if (intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
+	if (crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
 		temp |= TRANS_DDI_PHSYNC;
 
 	if (cpu_transcoder == TRANSCODER_EDP) {
@@ -1288,8 +1282,8 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
 			 * using motion blur mitigation (which we don't
 			 * support). */
 			if (IS_HASWELL(dev_priv) &&
-			    (intel_crtc->config->pch_pfit.enabled ||
-			     intel_crtc->config->pch_pfit.force_thru))
+			    (crtc->config->pch_pfit.enabled ||
+			     crtc->config->pch_pfit.force_thru))
 				temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
 			else
 				temp |= TRANS_DDI_EDP_INPUT_A_ON;
@@ -1307,20 +1301,20 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc)
 	}
 
 	if (type == INTEL_OUTPUT_HDMI) {
-		if (intel_crtc->config->has_hdmi_sink)
+		if (crtc->config->has_hdmi_sink)
 			temp |= TRANS_DDI_MODE_SELECT_HDMI;
 		else
 			temp |= TRANS_DDI_MODE_SELECT_DVI;
 	} else if (type == INTEL_OUTPUT_ANALOG) {
 		temp |= TRANS_DDI_MODE_SELECT_FDI;
-		temp |= (intel_crtc->config->fdi_lanes - 1) << 1;
+		temp |= (crtc->config->fdi_lanes - 1) << 1;
 	} else if (type == INTEL_OUTPUT_DP ||
 		   type == INTEL_OUTPUT_EDP) {
 		temp |= TRANS_DDI_MODE_SELECT_DP_SST;
-		temp |= DDI_PORT_WIDTH(intel_crtc->config->lane_count);
+		temp |= DDI_PORT_WIDTH(crtc->config->lane_count);
 	} else if (type == INTEL_OUTPUT_DP_MST) {
 		temp |= TRANS_DDI_MODE_SELECT_DP_MST;
-		temp |= DDI_PORT_WIDTH(intel_crtc->config->lane_count);
+		temp |= DDI_PORT_WIDTH(crtc->config->lane_count);
 	} else {
 		WARN(1, "Invalid encoder type %d for pipe %c\n",
 		     intel_encoder->type, pipe_name(pipe));
@@ -1484,14 +1478,12 @@ static u64 intel_ddi_get_power_domains(struct intel_encoder *encoder)
 	return 0;
 }
 
-void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc)
+void intel_ddi_enable_pipe_clock(struct intel_crtc *crtc)
 {
-	struct drm_crtc *crtc = &intel_crtc->base;
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
 	enum port port = intel_ddi_get_encoder_port(intel_encoder);
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
 
 	if (cpu_transcoder != TRANSCODER_EDP)
 		I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 16822ef..7cd3b6e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5386,9 +5386,9 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 	 */
 	intel_color_load_luts(&pipe_config->base);
 
-	intel_ddi_set_pipe_settings(crtc);
+	intel_ddi_set_pipe_settings(intel_crtc);
 	if (!transcoder_is_dsi(cpu_transcoder))
-		intel_ddi_enable_transcoder_func(crtc);
+		intel_ddi_enable_transcoder_func(intel_crtc);
 
 	if (dev_priv->display.initial_watermarks != NULL)
 		dev_priv->display.initial_watermarks(old_intel_state, pipe_config);
@@ -5401,7 +5401,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 		lpt_pch_enable(intel_crtc, pipe_config);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
-		intel_ddi_set_vc_payload_alloc(crtc, true);
+		intel_ddi_set_vc_payload_alloc(intel_crtc, true);
 
 	assert_vblank_disabled(crtc);
 	drm_crtc_vblank_on(crtc);
@@ -5523,7 +5523,7 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
 		intel_disable_pipe(intel_crtc);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
-		intel_ddi_set_vc_payload_alloc(crtc, false);
+		intel_ddi_set_vc_payload_alloc(intel_crtc, false);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
 		intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 330cf7f..1889f6e 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1230,14 +1230,14 @@ void hsw_fdi_link_train(struct intel_crtc *crtc,
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
-void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
+void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc);
 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
 				       enum transcoder cpu_transcoder);
 void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
 void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
 bool intel_ddi_pll_select(struct intel_crtc *crtc,
 			  struct intel_crtc_state *crtc_state);
-void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
+void intel_ddi_set_pipe_settings(struct intel_crtc *crtc);
 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
 bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
@@ -1250,7 +1250,7 @@ intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
 void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder);
 void intel_ddi_clock_get(struct intel_encoder *encoder,
 			 struct intel_crtc_state *pipe_config);
-void intel_ddi_set_vc_payload_alloc(struct drm_crtc *crtc, bool state);
+void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc, bool state);
 uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
 u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder);
 
-- 
2.9.3

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[PATCH v2 7/8] drm/i915: Remove direct usages of intel_crtc->config from DDI code

[Ander Conselvan de Oliveira]

Remove direct usages of intel_crtc->config from the DDI code. Functions
that didn't yet take a pipe_config as an argument were coverted to do
so.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c     | 61 +++++++++++++++++++-----------------
 drivers/gpu/drm/i915/intel_display.c | 12 +++----
 drivers/gpu/drm/i915/intel_drv.h     | 16 +++++++---
 3 files changed, 49 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 5e21bb5..2f26c75 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1193,11 +1193,12 @@ bool intel_ddi_pll_select(struct intel_crtc *intel_crtc,
 					  intel_encoder);
 }
 
-void intel_ddi_set_pipe_settings(struct intel_crtc *crtc)
+void intel_ddi_set_pipe_settings(struct intel_crtc *crtc,
+				 struct intel_crtc_state *pipe_config)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 	int type = intel_encoder->type;
 	uint32_t temp;
 
@@ -1205,7 +1206,7 @@ void intel_ddi_set_pipe_settings(struct intel_crtc *crtc)
 		WARN_ON(transcoder_is_dsi(cpu_transcoder));
 
 		temp = TRANS_MSA_SYNC_CLK;
-		switch (crtc->config->pipe_bpp) {
+		switch (pipe_config->pipe_bpp) {
 		case 18:
 			temp |= TRANS_MSA_6_BPC;
 			break;
@@ -1225,10 +1226,12 @@ void intel_ddi_set_pipe_settings(struct intel_crtc *crtc)
 	}
 }
 
-void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc, bool state)
+void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc,
+				    struct intel_crtc_state *pipe_config,
+				    bool state)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 	uint32_t temp;
 	temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
 	if (state == true)
@@ -1238,12 +1241,13 @@ void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc, bool state)
 	I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
 }
 
-void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc)
+void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc,
+				      struct intel_crtc_state *pipe_config)
 {
 	struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	enum pipe pipe = crtc->pipe;
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 	enum port port = intel_ddi_get_encoder_port(intel_encoder);
 	int type = intel_encoder->type;
 	uint32_t temp;
@@ -1252,7 +1256,7 @@ void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc)
 	temp = TRANS_DDI_FUNC_ENABLE;
 	temp |= TRANS_DDI_SELECT_PORT(port);
 
-	switch (crtc->config->pipe_bpp) {
+	switch (pipe_config->pipe_bpp) {
 	case 18:
 		temp |= TRANS_DDI_BPC_6;
 		break;
@@ -1269,9 +1273,9 @@ void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc)
 		BUG();
 	}
 
-	if (crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
+	if (pipe_config->base.adjusted_mode.flags & DRM_MODE_FLAG_PVSYNC)
 		temp |= TRANS_DDI_PVSYNC;
-	if (crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
+	if (pipe_config->base.adjusted_mode.flags & DRM_MODE_FLAG_PHSYNC)
 		temp |= TRANS_DDI_PHSYNC;
 
 	if (cpu_transcoder == TRANSCODER_EDP) {
@@ -1282,8 +1286,8 @@ void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc)
 			 * using motion blur mitigation (which we don't
 			 * support). */
 			if (IS_HASWELL(dev_priv) &&
-			    (crtc->config->pch_pfit.enabled ||
-			     crtc->config->pch_pfit.force_thru))
+			    (pipe_config->pch_pfit.enabled ||
+			     pipe_config->pch_pfit.force_thru))
 				temp |= TRANS_DDI_EDP_INPUT_A_ONOFF;
 			else
 				temp |= TRANS_DDI_EDP_INPUT_A_ON;
@@ -1301,20 +1305,20 @@ void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc)
 	}
 
 	if (type == INTEL_OUTPUT_HDMI) {
-		if (crtc->config->has_hdmi_sink)
+		if (pipe_config->has_hdmi_sink)
 			temp |= TRANS_DDI_MODE_SELECT_HDMI;
 		else
 			temp |= TRANS_DDI_MODE_SELECT_DVI;
 	} else if (type == INTEL_OUTPUT_ANALOG) {
 		temp |= TRANS_DDI_MODE_SELECT_FDI;
-		temp |= (crtc->config->fdi_lanes - 1) << 1;
+		temp |= (pipe_config->fdi_lanes - 1) << 1;
 	} else if (type == INTEL_OUTPUT_DP ||
 		   type == INTEL_OUTPUT_EDP) {
 		temp |= TRANS_DDI_MODE_SELECT_DP_SST;
-		temp |= DDI_PORT_WIDTH(crtc->config->lane_count);
+		temp |= DDI_PORT_WIDTH(pipe_config->lane_count);
 	} else if (type == INTEL_OUTPUT_DP_MST) {
 		temp |= TRANS_DDI_MODE_SELECT_DP_MST;
-		temp |= DDI_PORT_WIDTH(crtc->config->lane_count);
+		temp |= DDI_PORT_WIDTH(pipe_config->lane_count);
 	} else {
 		WARN(1, "Invalid encoder type %d for pipe %c\n",
 		     intel_encoder->type, pipe_name(pipe));
@@ -1478,22 +1482,24 @@ static u64 intel_ddi_get_power_domains(struct intel_encoder *encoder)
 	return 0;
 }
 
-void intel_ddi_enable_pipe_clock(struct intel_crtc *crtc)
+void intel_ddi_enable_pipe_clock(struct intel_crtc *crtc,
+				 struct intel_crtc_state *pipe_config)
 {
 	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
 	struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
 	enum port port = intel_ddi_get_encoder_port(intel_encoder);
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 
 	if (cpu_transcoder != TRANSCODER_EDP)
 		I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
 			   TRANS_CLK_SEL_PORT(port));
 }
 
-void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc)
+void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc,
+				  struct intel_crtc_state *pipe_config)
 {
 	struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 
 	if (cpu_transcoder != TRANSCODER_EDP)
 		I915_WRITE(TRANS_CLK_SEL(cpu_transcoder),
@@ -1759,23 +1765,21 @@ static void intel_ddi_pre_enable(struct intel_encoder *intel_encoder,
 				 struct intel_crtc_state *pipe_config,
 				 struct drm_connector_state *conn_state)
 {
-	struct drm_encoder *encoder = &intel_encoder->base;
-	struct intel_crtc *crtc = to_intel_crtc(encoder->crtc);
 	int type = intel_encoder->type;
 
 	if (type == INTEL_OUTPUT_DP || type == INTEL_OUTPUT_EDP) {
 		intel_ddi_pre_enable_dp(intel_encoder,
-					crtc->config->port_clock,
-					crtc->config->lane_count,
-					crtc->config->shared_dpll,
-					intel_crtc_has_type(crtc->config,
+					pipe_config->port_clock,
+					pipe_config->lane_count,
+					pipe_config->shared_dpll,
+					intel_crtc_has_type(pipe_config,
 							    INTEL_OUTPUT_DP_MST));
 	}
 	if (type == INTEL_OUTPUT_HDMI) {
 		intel_ddi_pre_enable_hdmi(intel_encoder,
 					  pipe_config->has_hdmi_sink,
 					  pipe_config, conn_state,
-					  crtc->config->shared_dpll);
+					  pipe_config->shared_dpll);
 	}
 }
 
@@ -1922,8 +1926,7 @@ static void bxt_ddi_pre_pll_enable(struct intel_encoder *encoder,
 				   struct intel_crtc_state *pipe_config,
 				   struct drm_connector_state *conn_state)
 {
-	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
-	uint8_t mask = intel_crtc->config->lane_lat_optim_mask;
+	uint8_t mask = pipe_config->lane_lat_optim_mask;
 
 	bxt_ddi_phy_set_lane_optim_mask(encoder, mask);
 }
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 7cd3b6e..2c9f788 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5373,7 +5373,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 		dev_priv->display.fdi_link_train(intel_crtc, pipe_config);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
-		intel_ddi_enable_pipe_clock(intel_crtc);
+		intel_ddi_enable_pipe_clock(intel_crtc, pipe_config);
 
 	if (INTEL_GEN(dev_priv) >= 9)
 		skylake_pfit_enable(intel_crtc);
@@ -5386,9 +5386,9 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 	 */
 	intel_color_load_luts(&pipe_config->base);
 
-	intel_ddi_set_pipe_settings(intel_crtc);
+	intel_ddi_set_pipe_settings(intel_crtc, pipe_config);
 	if (!transcoder_is_dsi(cpu_transcoder))
-		intel_ddi_enable_transcoder_func(intel_crtc);
+		intel_ddi_enable_transcoder_func(intel_crtc, pipe_config);
 
 	if (dev_priv->display.initial_watermarks != NULL)
 		dev_priv->display.initial_watermarks(old_intel_state, pipe_config);
@@ -5401,7 +5401,7 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
 		lpt_pch_enable(intel_crtc, pipe_config);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
-		intel_ddi_set_vc_payload_alloc(intel_crtc, true);
+		intel_ddi_set_vc_payload_alloc(intel_crtc, pipe_config, true);
 
 	assert_vblank_disabled(crtc);
 	drm_crtc_vblank_on(crtc);
@@ -5523,7 +5523,7 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
 		intel_disable_pipe(intel_crtc);
 
 	if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP_MST))
-		intel_ddi_set_vc_payload_alloc(intel_crtc, false);
+		intel_ddi_set_vc_payload_alloc(intel_crtc, intel_crtc->config, false);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
 		intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder);
@@ -5534,7 +5534,7 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
 		ironlake_pfit_disable(intel_crtc, false);
 
 	if (!transcoder_is_dsi(cpu_transcoder))
-		intel_ddi_disable_pipe_clock(intel_crtc);
+		intel_ddi_disable_pipe_clock(intel_crtc, intel_crtc->config);
 
 	intel_encoders_post_disable(crtc, old_crtc_state, old_state);
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1889f6e..91abad0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1230,14 +1230,18 @@ void hsw_fdi_link_train(struct intel_crtc *crtc,
 void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port);
 enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder);
 bool intel_ddi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe);
-void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc);
+void intel_ddi_enable_transcoder_func(struct intel_crtc *crtc,
+				      struct intel_crtc_state *pipe_config);
 void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
 				       enum transcoder cpu_transcoder);
-void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
-void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
+void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc,
+				 struct intel_crtc_state *pipe_config);
+void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc,
+				  struct intel_crtc_state *pipe_config);
 bool intel_ddi_pll_select(struct intel_crtc *crtc,
 			  struct intel_crtc_state *crtc_state);
-void intel_ddi_set_pipe_settings(struct intel_crtc *crtc);
+void intel_ddi_set_pipe_settings(struct intel_crtc *crtc,
+				 struct intel_crtc_state *pipe_config);
 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
 bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
@@ -1250,7 +1254,9 @@ intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state);
 void intel_ddi_init_dp_buf_reg(struct intel_encoder *encoder);
 void intel_ddi_clock_get(struct intel_encoder *encoder,
 			 struct intel_crtc_state *pipe_config);
-void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc, bool state);
+void intel_ddi_set_vc_payload_alloc(struct intel_crtc *crtc,
+				    struct intel_crtc_state *pipe_config,
+				    bool state);
 uint32_t ddi_signal_levels(struct intel_dp *intel_dp);
 u8 intel_ddi_dp_voltage_max(struct intel_encoder *encoder);
 
-- 
2.9.3

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[PATCH v2 8/8] drm/i915: Remove duplicate DDI enabling logic from MST path

[Ander Conselvan de Oliveira]

The logic to enable a DDI in intel_mst_pre_enable_dp() is essentially
the same as in intel_ddi_pre_enable_dp(). So reuse the latter function
by calling the post_disable hook on the intel_dig_port instead of
duplicating that code.

v2: Don't oops because of a NULL encoder->crtc. (Ville)
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c    |  2 ++
 drivers/gpu/drm/i915/intel_dp_mst.c | 23 +++--------------------
 2 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 2f26c75..208500a 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1714,6 +1714,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
 	enum port port = intel_ddi_get_encoder_port(encoder);
 	struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
 
+	WARN_ON(link_mst && port == PORT_A);
+
 	intel_dp_set_link_params(intel_dp, link_rate, lane_count,
 				 link_mst);
 	if (encoder->type == INTEL_OUTPUT_EDP)
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index a8334e1..094cbdc 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -159,26 +159,9 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
 
 	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
 
-	if (intel_dp->active_mst_links == 0) {
-		intel_ddi_clk_select(&intel_dig_port->base,
-				     pipe_config->shared_dpll);
-
-		intel_display_power_get(dev_priv,
-					intel_dig_port->ddi_io_power_domain);
-
-		intel_prepare_dp_ddi_buffers(&intel_dig_port->base);
-		intel_dp_set_link_params(intel_dp,
-					 pipe_config->port_clock,
-					 pipe_config->lane_count,
-					 true);
-
-		intel_ddi_init_dp_buf_reg(&intel_dig_port->base);
-
-		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
-
-		intel_dp_start_link_train(intel_dp);
-		intel_dp_stop_link_train(intel_dp);
-	}
+	if (intel_dp->active_mst_links == 0)
+		intel_dig_port->base.pre_enable(&intel_dig_port->base,
+						pipe_config, NULL);
 
 	ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr,
 				       connector->port,
-- 
2.9.3

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Re: [PATCH v2 8/8] drm/i915: Remove duplicate DDI enabling logic from MST path

[Ville Syrjälä]

On Wed, Mar 01, 2017 at 04:13:18PM +0200, Ander Conselvan de Oliveira wrote:
> The logic to enable a DDI in intel_mst_pre_enable_dp() is essentially
> the same as in intel_ddi_pre_enable_dp(). So reuse the latter function
> by calling the post_disable hook on the intel_dig_port instead of
> duplicating that code.
> 
> v2: Don't oops because of a NULL encoder->crtc. (Ville)
> Cc: Imre Deak <imre.deak@intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_ddi.c    |  2 ++
>  drivers/gpu/drm/i915/intel_dp_mst.c | 23 +++--------------------
>  2 files changed, 5 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index 2f26c75..208500a 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -1714,6 +1714,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
>  	enum port port = intel_ddi_get_encoder_port(encoder);
>  	struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
>  
> +	WARN_ON(link_mst && port == PORT_A);
> +

MST isn't allowed on port E either IIRC, so might want to warn for
that one as well.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

>  	intel_dp_set_link_params(intel_dp, link_rate, lane_count,
>  				 link_mst);
>  	if (encoder->type == INTEL_OUTPUT_EDP)
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
> index a8334e1..094cbdc 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -159,26 +159,9 @@ static void intel_mst_pre_enable_dp(struct intel_encoder *encoder,
>  
>  	DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
>  
> -	if (intel_dp->active_mst_links == 0) {
> -		intel_ddi_clk_select(&intel_dig_port->base,
> -				     pipe_config->shared_dpll);
> -
> -		intel_display_power_get(dev_priv,
> -					intel_dig_port->ddi_io_power_domain);
> -
> -		intel_prepare_dp_ddi_buffers(&intel_dig_port->base);
> -		intel_dp_set_link_params(intel_dp,
> -					 pipe_config->port_clock,
> -					 pipe_config->lane_count,
> -					 true);
> -
> -		intel_ddi_init_dp_buf_reg(&intel_dig_port->base);
> -
> -		intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
> -
> -		intel_dp_start_link_train(intel_dp);
> -		intel_dp_stop_link_train(intel_dp);
> -	}
> +	if (intel_dp->active_mst_links == 0)
> +		intel_dig_port->base.pre_enable(&intel_dig_port->base,
> +						pipe_config, NULL);
>  
>  	ret = drm_dp_mst_allocate_vcpi(&intel_dp->mst_mgr,
>  				       connector->port,
> -- 
> 2.9.3

-- 
Ville Syrjälä
Intel OTC
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✓ Fi.CI.BAT: success for Try to fix MST regression with DDI IO power domains (rev2)

[Patchwork]

== Series Details ==

Series: Try to fix MST regression with DDI IO power domains (rev2)
URL   : https://patchwork.freedesktop.org/series/20345/
State : success

== Summary ==

Series 20345v2 Try to fix MST regression with DDI IO power domains
https://patchwork.freedesktop.org/api/1.0/series/20345/revisions/2/mbox/

fi-bdw-5557u     total:278  pass:267  dwarn:0   dfail:0   fail:0   skip:11 
fi-bsw-n3050     total:278  pass:239  dwarn:0   dfail:0   fail:0   skip:39 
fi-bxt-j4205     total:278  pass:259  dwarn:0   dfail:0   fail:0   skip:19 
fi-bxt-t5700     total:278  pass:258  dwarn:0   dfail:0   fail:0   skip:20 
fi-byt-j1900     total:278  pass:251  dwarn:0   dfail:0   fail:0   skip:27 
fi-byt-n2820     total:278  pass:247  dwarn:0   dfail:0   fail:0   skip:31 
fi-hsw-4770      total:278  pass:262  dwarn:0   dfail:0   fail:0   skip:16 
fi-hsw-4770r     total:278  pass:262  dwarn:0   dfail:0   fail:0   skip:16 
fi-ilk-650       total:278  pass:228  dwarn:0   dfail:0   fail:0   skip:50 
fi-ivb-3520m     total:278  pass:260  dwarn:0   dfail:0   fail:0   skip:18 
fi-ivb-3770      total:278  pass:260  dwarn:0   dfail:0   fail:0   skip:18 
fi-kbl-7500u     total:278  pass:259  dwarn:1   dfail:0   fail:0   skip:18 
fi-skl-6260u     total:278  pass:268  dwarn:0   dfail:0   fail:0   skip:10 
fi-skl-6700hq    total:278  pass:261  dwarn:0   dfail:0   fail:0   skip:17 
fi-skl-6700k     total:278  pass:256  dwarn:4   dfail:0   fail:0   skip:18 
fi-skl-6770hq    total:278  pass:268  dwarn:0   dfail:0   fail:0   skip:10 
fi-snb-2520m     total:278  pass:250  dwarn:0   dfail:0   fail:0   skip:28 
fi-snb-2600      total:278  pass:249  dwarn:0   dfail:0   fail:0   skip:29 

77db4e1f75f54471bf2fbebf114b2ba9c2d3bca7 drm-tip: 2017y-03m-01d-14h-59m-18s UTC integration manifest
b859863 drm/i915: Remove duplicate DDI enabling logic from MST path
881dbd6 drm/i915: Remove direct usages of intel_crtc->config from DDI code
16be05c drm/i915: Pass intel_crtc to DDI functions called from crtc en/disable
aa0aa86 drm/i915: Pass pipe_config to fdi_link_train() functions
1f09668 drm/i915: Pass pipe_config to pch_enable() functions
ec11fe2 drm/i915: Pass intel_crtc to intel_lpt_pch_enable()
ccc54cd drm/i915: Pass intel_crtc to fdi_link_train() hooks
c371ce1 drm/i915: Enable DDI IO power domains in the DP MST path

== Logs ==

For more details see: https://intel-gfx-ci.01.org/CI/Patchwork_4016/
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✓ Fi.CI.BAT: success for Try to fix MST regression with DDI IO power domains (rev4)

[Patchwork]

== Series Details ==

Series: Try to fix MST regression with DDI IO power domains (rev4)
URL   : https://patchwork.freedesktop.org/series/20345/
State : success

== Summary ==

Series 20345v4 Try to fix MST regression with DDI IO power domains
https://patchwork.freedesktop.org/api/1.0/series/20345/revisions/4/mbox/

Test pm_rpm:
        Subgroup basic-pci-d3-state:
                incomplete -> PASS       (fi-byt-n2820) fdo#99740

fdo#99740 https://bugs.freedesktop.org/show_bug.cgi?id=99740

fi-bdw-5557u     total:278  pass:267  dwarn:0   dfail:0   fail:0   skip:11 
fi-bsw-n3050     total:278  pass:239  dwarn:0   dfail:0   fail:0   skip:39 
fi-bxt-j4205     total:278  pass:259  dwarn:0   dfail:0   fail:0   skip:19 
fi-bxt-t5700     total:278  pass:258  dwarn:0   dfail:0   fail:0   skip:20 
fi-byt-j1900     total:278  pass:251  dwarn:0   dfail:0   fail:0   skip:27 
fi-byt-n2820     total:278  pass:247  dwarn:0   dfail:0   fail:0   skip:31 
fi-hsw-4770      total:278  pass:262  dwarn:0   dfail:0   fail:0   skip:16 
fi-hsw-4770r     total:278  pass:262  dwarn:0   dfail:0   fail:0   skip:16 
fi-ilk-650       total:278  pass:228  dwarn:0   dfail:0   fail:0   skip:50 
fi-ivb-3520m     total:278  pass:260  dwarn:0   dfail:0   fail:0   skip:18 
fi-ivb-3770      total:278  pass:260  dwarn:0   dfail:0   fail:0   skip:18 
fi-kbl-7500u     total:278  pass:259  dwarn:1   dfail:0   fail:0   skip:18 
fi-skl-6260u     total:278  pass:268  dwarn:0   dfail:0   fail:0   skip:10 
fi-skl-6700hq    total:278  pass:261  dwarn:0   dfail:0   fail:0   skip:17 
fi-skl-6700k     total:278  pass:256  dwarn:4   dfail:0   fail:0   skip:18 
fi-skl-6770hq    total:278  pass:268  dwarn:0   dfail:0   fail:0   skip:10 
fi-snb-2520m     total:278  pass:250  dwarn:0   dfail:0   fail:0   skip:28 
fi-snb-2600      total:278  pass:249  dwarn:0   dfail:0   fail:0   skip:29 

b3c4a574937b2256a716b23037c8b94ffebd7c8a drm-tip: 2017y-03m-02d-08h-59m-08s UTC integration manifest
5566f2c drm/i915: Remove duplicate DDI enabling logic from MST path
ad66c98 drm/i915: Remove direct usages of intel_crtc->config from DDI code
e72d837 drm/i915: Pass intel_crtc to DDI functions called from crtc en/disable
13d0cc49 drm/i915: Pass pipe_config to fdi_link_train() functions
081a5d5 drm/i915: Pass pipe_config to pch_enable() functions
0190f31 drm/i915: Pass intel_crtc to intel_lpt_pch_enable()
1c19ed3 drm/i915: Pass intel_crtc to fdi_link_train() hooks

== Logs ==

For more details see: https://intel-gfx-ci.01.org/CI/Patchwork_4029/
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