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[v2] drm/i915: Use pipe_config's cpu_transcoder for reading encoder hw state

Message ID 1422613043-24075-1-git-send-email-ander.conselvan.de.oliveira@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ander Conselvan de Oliveira Jan. 30, 2015, 10:17 a.m. UTC
The get_config() functions for ddi and dp_mst, used to read the value
of cpu_transcoder from the crtc->config instead of the state passed as
an argument. On the hardware state readout path, that happens to work
since the proper value is written to it before encoder->get_config() is
called. However, in the check_crtc() path, the state will be read from
the cpu_transcoder in the software tracking, instead of the one just
read out from hw. Using the field in the supplied intel_crtc_state
should do the right thing in both cases.

v2: Fix intel_ddi_get_config() too. (Ander)

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 | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Comments

Daniel Vetter Jan. 30, 2015, 4:38 p.m. UTC | #1
On Fri, Jan 30, 2015 at 12:17:23PM +0200, Ander Conselvan de Oliveira wrote:
> The get_config() functions for ddi and dp_mst, used to read the value
> of cpu_transcoder from the crtc->config instead of the state passed as
> an argument. On the hardware state readout path, that happens to work
> since the proper value is written to it before encoder->get_config() is
> called. However, in the check_crtc() path, the state will be read from
> the cpu_transcoder in the software tracking, instead of the one just
> read out from hw. Using the field in the supplied intel_crtc_state
> should do the right thing in both cases.

Presuming no bugs (big if, I know ...) the hw state and the crtc->config
state should match. So I don't think there's any impact here, just
consitency, so -next material.

> v2: Fix intel_ddi_get_config() too. (Ander)
> 
> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>

Queued for -next, thanks for the patch.
-Daniel

> ---
>  drivers/gpu/drm/i915/intel_ddi.c    | 2 +-
>  drivers/gpu/drm/i915/intel_dp_mst.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
> index ff2197c..7dc930f 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -2046,7 +2046,7 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
>  {
>  	struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
>  	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
> -	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
> +	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
>  	struct intel_hdmi *intel_hdmi;
>  	u32 temp, flags = 0;
>  
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
> index 2856b0b..9f67a37 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -226,7 +226,7 @@ static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
>  	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
>  	struct drm_device *dev = encoder->base.dev;
>  	struct drm_i915_private *dev_priv = dev->dev_private;
> -	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
> +	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
>  	u32 temp, flags = 0;
>  
>  	pipe_config->has_dp_encoder = true;
> -- 
> 2.1.0
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Shuang He Feb. 1, 2015, 8:45 p.m. UTC | #2
Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com)
Task id: 5688
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  353/353              353/353
ILK                                  200/200              200/200
SNB                 -1              400/422              399/422
IVB              +2                 485/487              487/487
BYT                                  296/296              296/296
HSW              +1                 507/508              508/508
BDW                 -2              401/402              399/402
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*SNB  igt_kms_flip_nonexisting-fb      PASS(2, M35M22)      NSPT(1, M22)
 IVB  igt_gem_pwrite_pread_snooped-pwrite-blt-cpu_mmap-performance      DMESG_WARN(6, M34M21)PASS(9, M4M34)      PASS(1, M21)
 IVB  igt_gem_storedw_batches_loop_normal      DMESG_WARN(6, M34M4)PASS(16, M34M4M21)      PASS(1, M21)
 HSW  igt_gem_pwrite_pread_snooped-pwrite-blt-cpu_mmap-performance      DMESG_WARN(1, M40)PASS(20, M40M20)      PASS(1, M20)
 BDW  igt_gem_pwrite_pread_display-pwrite-blt-gtt_mmap-performance      DMESG_WARN(5, M28)PASS(2, M30)      DMESG_WARN(1, M28)
*BDW  igt_gem_pwrite_pread_uncached-pwrite-blt-gtt_mmap-performance      PASS(7, M30M28)      DMESG_WARN(1, M28)
Note: You need to pay more attention to line start with '*'
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index ff2197c..7dc930f 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -2046,7 +2046,7 @@  void intel_ddi_get_config(struct intel_encoder *encoder,
 {
 	struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
 	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
-	enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 	struct intel_hdmi *intel_hdmi;
 	u32 temp, flags = 0;
 
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 2856b0b..9f67a37 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -226,7 +226,7 @@  static void intel_dp_mst_enc_get_config(struct intel_encoder *encoder,
 	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 	struct drm_device *dev = encoder->base.dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
+	enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
 	u32 temp, flags = 0;
 
 	pipe_config->has_dp_encoder = true;