On Fri, Dec 21, 2018 at 01:29:40AM +0530, Uma Shankar wrote:
> Enable ICL pipe csc hardware. CSC block is enabled
> in CSC_MODE register instead of PLANE_COLOR_CTL.
>
> ToDO: Extend the ABI to accept 32 bit coefficient values
> instead of 16bit for future platforms.
>
> v2: Addressed Maarten's review comments.
>
> v3: Addressed Matt's review comments. Removed rmw patterns
> as suggested by Matt.
>
> v4: Addressed Matt's review comments.
>
> Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 4 +++-
> drivers/gpu/drm/i915/intel_color.c | 12 ++++++++++--
> 2 files changed, 13 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 1852c33..565ef6a 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -9861,7 +9861,9 @@ enum skl_power_gate {
> #define _PIPE_A_CSC_COEFF_RV_GV 0x49020
> #define _PIPE_A_CSC_COEFF_BV 0x49024
> #define _PIPE_A_CSC_MODE 0x49028
> -#define CSC_BLACK_SCREEN_OFFSET (1 << 2)
> +#define CSC_ENABLE (1 << 31)
> +#define OUTPUT_CSC_ENABLE (1 << 30)
> +#define CSC_BLACK_SCREEN_OFFSET (1 << 2)
Bogus space->tab change.
We should probably document which bit is for which platforms.
> #define CSC_POSITION_BEFORE_GAMMA (1 << 1)
> #define CSC_MODE_YUV_TO_RGB (1 << 0)
> #define _PIPE_A_CSC_PREOFF_HI 0x49030
> diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
> index e72d8d6..d5b240c 100644
> --- a/drivers/gpu/drm/i915/intel_color.c
> +++ b/drivers/gpu/drm/i915/intel_color.c
> @@ -134,7 +134,11 @@ static void ilk_load_ycbcr_conversion_matrix(struct intel_crtc *crtc)
> I915_WRITE(PIPE_CSC_POSTOFF_HI(pipe), POSTOFF_RGB_TO_YUV_HI);
> I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), POSTOFF_RGB_TO_YUV_ME);
> I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), POSTOFF_RGB_TO_YUV_LO);
> - I915_WRITE(PIPE_CSC_MODE(pipe), 0);
> +
> + if (INTEL_GEN(dev_priv) >= 10)
11
> + I915_WRITE(PIPE_CSC_MODE(pipe), OUTPUT_CSC_ENABLE);
> + else
> + I915_WRITE(PIPE_CSC_MODE(pipe), 0);
> }
>
> static void ilk_load_csc_matrix(struct intel_crtc_state *crtc_state)
> @@ -242,7 +246,10 @@ static void ilk_load_csc_matrix(struct intel_crtc_state *crtc_state)
> I915_WRITE(PIPE_CSC_POSTOFF_ME(pipe), postoff);
> I915_WRITE(PIPE_CSC_POSTOFF_LO(pipe), postoff);
>
> - I915_WRITE(PIPE_CSC_MODE(pipe), 0);
> + if (INTEL_GEN(dev_priv) >= 10)
11
> + I915_WRITE(PIPE_CSC_MODE(pipe), CSC_ENABLE);
> + else
> + I915_WRITE(PIPE_CSC_MODE(pipe), 0);
> } else {
> uint32_t mode = CSC_MODE_YUV_TO_RGB;
>
> @@ -715,6 +722,7 @@ void intel_color_init(struct intel_crtc *crtc)
> dev_priv->display.load_csc_matrix = ilk_load_csc_matrix;
> dev_priv->display.load_luts = glk_load_luts;
> } else if (IS_ICELAKE(dev_priv)) {
> + dev_priv->display.load_csc_matrix = ilk_load_csc_matrix;
> dev_priv->display.load_luts = icl_load_luts;
> } else {
> dev_priv->display.load_luts = i9xx_load_luts;
> --
> 1.9.1
>
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> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Ville Syrjälä
Intel
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