Hi, 

> -----Original Message-----
> From: Intel-gfx <intel-gfx-boun...@lists.freedesktop.org> On Behalf Of Swati
> Sharma
> Sent: tiistai 24. syyskuuta 2019 16.58
> To: intel-gfx@lists.freedesktop.org
> Cc: Nikula, Jani <jani.nik...@intel.com>; daniel.vet...@ffwll.ch; Nautiyal, 
> Ankit K
> <ankit.k.nauti...@intel.com>
> Subject: [Intel-gfx] [PATCH] Revert "drm/i915/color: Extract icl_read_luts()"
> 
> This reverts commit 84af7649188194a74cdd6437235a5e3c86108f0f.
> 
> This is causing problems with the display, displays are all bright colors.

Tested-by: Jani Saarinen <jani.saari...@intel.com>
Bugzilla:  https://bugs.freedesktop.org/show_bug.cgi?id=111809

> 
> Signed-off-by: Swati Sharma <swati2.sha...@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_color.c | 126 +++------------------
>  drivers/gpu/drm/i915/i915_reg.h            |   6 -
>  2 files changed, 15 insertions(+), 117 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_color.c
> b/drivers/gpu/drm/i915/display/intel_color.c
> index 402151128e1f..9ab34902663e 100644
> --- a/drivers/gpu/drm/i915/display/intel_color.c
> +++ b/drivers/gpu/drm/i915/display/intel_color.c
> @@ -1420,9 +1420,6 @@ static int icl_color_check(struct intel_crtc_state
> *crtc_state)
> 
>  static int i9xx_gamma_precision(const struct intel_crtc_state *crtc_state)  {
> -     if (!crtc_state->gamma_enable)
> -             return 0;
> -
>       switch (crtc_state->gamma_mode) {
>       case GAMMA_MODE_MODE_8BIT:
>               return 8;
> @@ -1436,9 +1433,6 @@ static int i9xx_gamma_precision(const struct
> intel_crtc_state *crtc_state)
> 
>  static int ilk_gamma_precision(const struct intel_crtc_state *crtc_state)  {
> -     if (!crtc_state->gamma_enable)
> -             return 0;
> -
>       if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
>               return 0;
> 
> @@ -1455,9 +1449,6 @@ static int ilk_gamma_precision(const struct
> intel_crtc_state *crtc_state)
> 
>  static int chv_gamma_precision(const struct intel_crtc_state *crtc_state)  {
> -     if (!crtc_state->gamma_enable)
> -             return 0;
> -
>       if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
>               return 10;
>       else
> @@ -1466,9 +1457,6 @@ static int chv_gamma_precision(const struct
> intel_crtc_state *crtc_state)
> 
>  static int glk_gamma_precision(const struct intel_crtc_state *crtc_state)  {
> -     if (!crtc_state->gamma_enable)
> -             return 0;
> -
>       switch (crtc_state->gamma_mode) {
>       case GAMMA_MODE_MODE_8BIT:
>               return 8;
> @@ -1480,39 +1468,21 @@ static int glk_gamma_precision(const struct
> intel_crtc_state *crtc_state)
>       }
>  }
> 
> -static int icl_gamma_precision(const struct intel_crtc_state *crtc_state) -{
> -     if ((crtc_state->gamma_mode & POST_CSC_GAMMA_ENABLE) == 0)
> -             return 0;
> -
> -     switch (crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) {
> -     case GAMMA_MODE_MODE_8BIT:
> -             return 8;
> -     case GAMMA_MODE_MODE_10BIT:
> -             return 10;
> -     case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
> -             return 16;
> -     default:
> -             MISSING_CASE(crtc_state->gamma_mode);
> -             return 0;
> -     }
> -
> -}
> -
>  int intel_color_get_gamma_bit_precision(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);
> 
> +     if (!crtc_state->gamma_enable)
> +             return 0;
> +
>       if (HAS_GMCH(dev_priv)) {
>               if (IS_CHERRYVIEW(dev_priv))
>                       return
> chv_gamma_precision(crtc_state);
>               else
>                       return
> i9xx_gamma_precision(crtc_state);
>       } else {
> -             if (INTEL_GEN(dev_priv) >= 11)
> -                     return
> icl_gamma_precision(crtc_state);
> -             else if (IS_CANNONLAKE(dev_priv) ||
> IS_GEMINILAKE(dev_priv))
> +             if (IS_CANNONLAKE(dev_priv) ||
> IS_GEMINILAKE(dev_priv))
>                       return
> glk_gamma_precision(crtc_state);
>               else if (IS_IRONLAKE(dev_priv))
>                       return
> ilk_gamma_precision(crtc_state); @@ -1543,20 +1513,6 @@ static bool
> intel_color_lut_entry_equal(struct drm_color_lut *lut1,
>       return true;
>  }
> 
> -static bool intel_color_lut_entry_multi_equal(struct drm_color_lut *lut1,
> -                                           struct
> drm_color_lut *lut2,
> -                                           int
> lut_size, u32 err)
> -{
> -     int i;
> -
> -     for (i = 0; i < 9; i++) {
> -             if (!err_check(&lut1[i], &lut2[i], err))
> -                     return false;
> -     }
> -
> -     return true;
> -}
> -
>  bool intel_color_lut_equal(struct drm_property_blob *blob1,
>                          struct drm_property_blob *blob2,
>                          u32 gamma_mode, u32 bit_precision)
> @@ -1575,8 +1531,16 @@ bool intel_color_lut_equal(struct drm_property_blob
> *blob1,
>       lut_size2 = drm_color_lut_size(blob2);
> 
>       /* check sw and hw lut size */
> -     if (lut_size1 != lut_size2)
> -             return false;
> +     switch (gamma_mode) {
> +     case GAMMA_MODE_MODE_8BIT:
> +     case GAMMA_MODE_MODE_10BIT:
> +             if (lut_size1 != lut_size2)
> +                     return false;
> +             break;
> +     default:
> +             MISSING_CASE(gamma_mode);
> +                     return false;
> +     }
> 
>       lut1 = blob1->data;
>       lut2 = blob2->data;
> @@ -1584,18 +1548,13 @@ bool intel_color_lut_equal(struct drm_property_blob
> *blob1,
>       err = 0xffff >> bit_precision;
> 
>       /* check sw and hw lut entry to be equal */
> -     switch (gamma_mode & GAMMA_MODE_MODE_MASK) {
> +     switch (gamma_mode) {
>       case GAMMA_MODE_MODE_8BIT:
>       case GAMMA_MODE_MODE_10BIT:
>               if (!intel_color_lut_entry_equal(lut1, lut2,
> 
>        lut_size2, err))
>                       return false;
>               break;
> -     case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
> -             if (!intel_color_lut_entry_multi_equal(lut1, lut2,
> -
>              lut_size2, err))
> -                     return false;
> -             break;
>       default:
>               MISSING_CASE(gamma_mode);
>                       return false;
> @@ -1835,60 +1794,6 @@ static void glk_read_luts(struct intel_crtc_state
> *crtc_state)
>               crtc_state->base.gamma_lut =
> glk_read_lut_10(crtc_state, PAL_PREC_INDEX_VALUE(0));  }
> 
> -static struct drm_property_blob *
> -icl_read_lut_multi_segment(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);
> -     int lut_size = INTEL_INFO(dev_priv)->color.gamma_lut_size;
> -     enum pipe pipe = crtc->pipe;
> -     struct drm_property_blob *blob;
> -     struct drm_color_lut *blob_data;
> -     u32 i, val1, val2;
> -
> -     blob = drm_property_create_blob(&dev_priv->drm,
> -
>       sizeof(struct drm_color_lut) * lut_size,
> -                                     NULL);
> -     if (IS_ERR(blob))
> -             return NULL;
> -
> -     blob_data = blob->data;
> -
> -     I915_WRITE(PREC_PAL_MULTI_SEG_INDEX(pipe),
> PAL_PREC_AUTO_INCREMENT);
> -
> -     for (i = 0; i < 9; i++) {
> -             val1 =
> I915_READ(PREC_PAL_MULTI_SEG_DATA(pipe));
> -             val2 =
> I915_READ(PREC_PAL_MULTI_SEG_DATA(pipe));
> -
> -             blob_data[i].red =
> REG_FIELD_GET(PAL_PREC_MULTI_SEG_RED_UDW_MASK, val2) << 6 |
> -
> REG_FIELD_GET(PAL_PREC_MULTI_SEG_RED_LDW_MASK, val1);
> -             blob_data[i].green =
> REG_FIELD_GET(PAL_PREC_MULTI_SEG_GREEN_UDW_MASK, val2) << 6 |
> -
> REG_FIELD_GET(PAL_PREC_MULTI_SEG_GREEN_LDW_MASK, val1);
> -             blob_data[i].blue =
> REG_FIELD_GET(PAL_PREC_MULTI_SEG_BLUE_UDW_MASK, val2) << 6 |
> -
> REG_FIELD_GET(PAL_PREC_MULTI_SEG_BLUE_LDW_MASK, val1);
> -     }
> -
> -     /*
> -      * FIXME readouts from PAL_PREC_DATA register aren't giving correct
> values
> -      * in the case of fine and coarse segments. Restricting readouts only
> for
> -      * super fine segment as of now.
> -      */
> -
> -     return blob;
> -}
> -
> -static void icl_read_luts(struct intel_crtc_state *crtc_state) -{
> -     if ((crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) ==
> -         GAMMA_MODE_MODE_8BIT)
> -             crtc_state->base.gamma_lut =
> i9xx_read_lut_8(crtc_state);
> -     else if ((crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK)
> ==
> -              GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED)
> -             crtc_state->base.gamma_lut =
> icl_read_lut_multi_segment(crtc_state);
> -     else
> -             crtc_state->base.gamma_lut =
> glk_read_lut_10(crtc_state, PAL_PREC_INDEX_VALUE(0));
> -}
> -
>  void intel_color_init(struct intel_crtc *crtc)  {
>       struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); @@ -
> 1932,7 +1837,6 @@ void intel_color_init(struct intel_crtc *crtc)
> 
>               if (INTEL_GEN(dev_priv) >= 11) {
>                       dev_priv->display.load_luts =
> icl_load_luts;
> -                     dev_priv->display.read_luts =
> icl_read_luts;
>               } else if (IS_CANNONLAKE(dev_priv) ||
> IS_GEMINILAKE(dev_priv)) {
>                       dev_priv->display.load_luts =
> glk_load_luts;
>                       dev_priv->display.read_luts =
> glk_read_luts; diff --git a/drivers/gpu/drm/i915/i915_reg.h
> b/drivers/gpu/drm/i915/i915_reg.h index a69c19aae5bb..661cbe4c933a 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -10574,12 +10574,6 @@ enum skl_power_gate {
> 
>  #define _PAL_PREC_MULTI_SEG_DATA_A   0x4A40C
>  #define _PAL_PREC_MULTI_SEG_DATA_B   0x4AC0C
> -#define  PAL_PREC_MULTI_SEG_RED_LDW_MASK   REG_GENMASK(29, 24)
> -#define  PAL_PREC_MULTI_SEG_RED_UDW_MASK   REG_GENMASK(29, 20)
> -#define  PAL_PREC_MULTI_SEG_GREEN_LDW_MASK REG_GENMASK(19, 14) -
> #define  PAL_PREC_MULTI_SEG_GREEN_UDW_MASK REG_GENMASK(19, 10) -
> #define  PAL_PREC_MULTI_SEG_BLUE_LDW_MASK  REG_GENMASK(9, 4) -#define
> PAL_PREC_MULTI_SEG_BLUE_UDW_MASK  REG_GENMASK(9, 0)
> 
>  #define PREC_PAL_MULTI_SEG_INDEX(pipe)       _MMIO_PIPE(pipe, \
> 
>       _PAL_PREC_MULTI_SEG_INDEX_A, \
> --
> 2.23.0
> 
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