>-----Original Message-----
>From: Ville Syrjala [mailto:[email protected]]
>Sent: Tuesday, February 19, 2019 1:02 AM
>To: [email protected]
>Cc: Shankar, Uma <[email protected]>; Roper, Matthew D
><[email protected]>
>Subject: [PATCH 2/7] drm/i915: Preocmpute/readout/check CHV CGM mode

Typo in precompute

>
>From: Ville Syrjälä <[email protected]>
>
>Let's precompte the CGM mode for CHV. And naturally we also read it out and 
>check

Same here.

Rest looks good to me. With the above minor nits fixed.
Reviewed-by: Uma Shankar <[email protected]>

>it.
>
>Signed-off-by: Ville Syrjälä <[email protected]>
>---
> drivers/gpu/drm/i915/intel_color.c   | 28 +++++++++++++++++++++-------
> drivers/gpu/drm/i915/intel_display.c |  8 +++++++-
> drivers/gpu/drm/i915/intel_drv.h     |  9 +++++++--
> 3 files changed, 35 insertions(+), 10 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_color.c 
>b/drivers/gpu/drm/i915/intel_color.c
>index d813b9d0f5c0..93428d86510a 100644
>--- a/drivers/gpu/drm/i915/intel_color.c
>+++ b/drivers/gpu/drm/i915/intel_color.c
>@@ -294,7 +294,6 @@ static void cherryview_load_csc_matrix(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 pipe pipe = crtc->pipe;
>-      u32 mode;
>
>       if (crtc_state->base.ctm) {
>               const struct drm_color_ctm *ctm = crtc_state->base.ctm->data; @@
>-328,12 +327,7 @@ static void cherryview_load_csc_matrix(const struct
>intel_crtc_state *crtc_state
>               I915_WRITE(CGM_PIPE_CSC_COEFF8(pipe), coeffs[8]);
>       }
>
>-      mode = (crtc_state->base.ctm ? CGM_PIPE_MODE_CSC : 0);
>-      if (!crtc_state_is_legacy_gamma(crtc_state)) {
>-              mode |= (crtc_state->base.degamma_lut ?
>CGM_PIPE_MODE_DEGAMMA : 0) |
>-                      (crtc_state->base.gamma_lut ? CGM_PIPE_MODE_GAMMA :
>0);
>-      }
>-      I915_WRITE(CGM_PIPE_MODE(pipe), mode);
>+      I915_WRITE(CGM_PIPE_MODE(pipe), crtc_state->cgm_mode);
> }
>
> /* Loads the legacy palette/gamma unit for the CRTC. */ @@ -753,6 +747,23 @@
>static int check_lut_size(const struct drm_property_blob *lut, int expected)
>       return 0;
> }
>
>+static u32 chv_cgm_mode(const struct intel_crtc_state *crtc_state) {
>+      u32 cgm_mode = 0;
>+
>+      if (crtc_state_is_legacy_gamma(crtc_state))
>+              return 0;
>+
>+      if (crtc_state->base.degamma_lut)
>+              cgm_mode |= CGM_PIPE_MODE_DEGAMMA;
>+      if (crtc_state->base.ctm)
>+              cgm_mode |= CGM_PIPE_MODE_CSC;
>+      if (crtc_state->base.gamma_lut)
>+              cgm_mode |= CGM_PIPE_MODE_GAMMA;
>+
>+      return cgm_mode;
>+}
>+
> int intel_color_check(struct intel_crtc_state *crtc_state)  {
>       struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
>@@ -790,6 +801,9 @@ int intel_color_check(struct intel_crtc_state *crtc_state)
>
>       crtc_state->csc_mode = 0;
>
>+      if (IS_CHERRYVIEW(dev_priv))
>+              crtc_state->cgm_mode = chv_cgm_mode(crtc_state);
>+
>       /* Always allow legacy gamma LUT with no further checking. */
>       if (!crtc_state->gamma_enable ||
>           crtc_state_is_legacy_gamma(crtc_state)) { diff --git
>a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
>index 2e4d33634e0c..d2f3174e10d6 100644
>--- a/drivers/gpu/drm/i915/intel_display.c
>+++ b/drivers/gpu/drm/i915/intel_display.c
>@@ -8187,6 +8187,9 @@ static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
>       pipe_config->gamma_mode = (tmp &
>PIPECONF_GAMMA_MODE_MASK_I9XX) >>
>               PIPECONF_GAMMA_MODE_SHIFT;
>
>+      if (IS_CHERRYVIEW(dev_priv))
>+              pipe_config->cgm_mode = I915_READ(CGM_PIPE_MODE(crtc-
>>pipe));
>+
>       i9xx_get_pipe_color_config(pipe_config);
>
>       if (INTEL_GEN(dev_priv) < 4)
>@@ -12150,7 +12153,10 @@ intel_pipe_config_compare(struct drm_i915_private
>*dev_priv,
>               PIPE_CONF_CHECK_CLOCK_FUZZY(pixel_rate);
>
>               PIPE_CONF_CHECK_X(gamma_mode);
>-              PIPE_CONF_CHECK_X(csc_mode);
>+              if (IS_CHERRYVIEW(dev_priv))
>+                      PIPE_CONF_CHECK_X(cgm_mode);
>+              else
>+                      PIPE_CONF_CHECK_X(csc_mode);
>               PIPE_CONF_CHECK_BOOL(gamma_enable);
>               PIPE_CONF_CHECK_BOOL(csc_enable);
>       }
>diff --git a/drivers/gpu/drm/i915/intel_drv.h 
>b/drivers/gpu/drm/i915/intel_drv.h
>index eec4ed93c335..bbe9cf7e20d6 100644
>--- a/drivers/gpu/drm/i915/intel_drv.h
>+++ b/drivers/gpu/drm/i915/intel_drv.h
>@@ -942,8 +942,13 @@ struct intel_crtc_state {
>       /* Gamma mode programmed on the pipe */
>       u32 gamma_mode;
>
>-      /* CSC mode programmed on the pipe */
>-      u32 csc_mode;
>+      union {
>+              /* CSC mode programmed on the pipe */
>+              u32 csc_mode;
>+
>+              /* CHV CGM mode */
>+              u32 cgm_mode;
>+      };
>
>       /* bitmask of visible planes (enum plane_id) */
>       u8 active_planes;
>--
>2.19.2

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