On Wed, 21 Aug 2019, Animesh Manna <[email protected]> wrote:
> Gamma lut programming can be programmed using DSB
> where bulk register programming can be done using indexed
> register write which takes number of data and the mmio offset
> to be written.

No. Please stick to adding and using the relevant intel dsb write
routines for switching areas to using DSB.

BR,
Jani.

>
> Cc: Jani Nikula <[email protected]>
> Cc: Rodrigo Vivi <[email protected]>
> Signed-off-by: Animesh Manna <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_color.c |  4 ++++
>  drivers/gpu/drm/i915/i915_reg.h            | 25 +++++++++++++++-------
>  2 files changed, 21 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_color.c 
> b/drivers/gpu/drm/i915/display/intel_color.c
> index 71a0201437a9..866e9306f4c9 100644
> --- a/drivers/gpu/drm/i915/display/intel_color.c
> +++ b/drivers/gpu/drm/i915/display/intel_color.c
> @@ -882,6 +882,7 @@ static void icl_load_luts(const struct intel_crtc_state 
> *crtc_state)
>  {
>       const struct drm_property_blob *gamma_lut = crtc_state->base.gamma_lut;
>       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->base.degamma_lut)
>               glk_load_degamma_lut(crtc_state);
> @@ -900,6 +901,8 @@ static void icl_load_luts(const struct intel_crtc_state 
> *crtc_state)
>               bdw_load_lut_10(crtc, gamma_lut, PAL_PREC_INDEX_VALUE(0));
>               ivb_load_lut_ext_max(crtc);
>       }
> +
> +     intel_dsb_commit(dev_priv->dsb);
>  }
>  
>  static u32 chv_cgm_degamma_ldw(const struct drm_color_lut *color)
> @@ -980,6 +983,7 @@ void intel_color_load_luts(const struct intel_crtc_state 
> *crtc_state)
>  {
>       struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
>  
> +     dev_priv->dsb = crtc_state->dsb;

Cringe.

>       dev_priv->display.load_luts(crtc_state);
>  }
>  
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index a1a9d09b6420..4d70ae6a6a2d 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -242,7 +242,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
>  #define _PORT(port, a, b)            _PICK_EVEN(port, a, b)
>  #define _PLL(pll, a, b)                      _PICK_EVEN(pll, a, b)
>  
> -#define _MMIO_PIPE(pipe, a, b)               _MMIO(_PIPE(pipe, a, b))
> +#define _MMIO_PIPE(pipe, a, b, ...)  _MMIO(_PIPE(pipe, a, b), ##__VA_ARGS__)
>  #define _MMIO_PLANE(plane, a, b)     _MMIO(_PLANE(plane, a, b))
>  #define _MMIO_TRANS(tran, a, b)              _MMIO(_TRANS(tran, a, b))
>  #define _MMIO_PORT(port, a, b)               _MMIO(_PORT(port, a, b))
> @@ -10246,11 +10246,18 @@ enum skl_power_gate {
>  #define _PAL_PREC_EXT2_GC_MAX_B      0x4AC30
>  #define _PAL_PREC_EXT2_GC_MAX_C      0x4B430
>  
> -#define PREC_PAL_INDEX(pipe)         _MMIO_PIPE(pipe, _PAL_PREC_INDEX_A, 
> _PAL_PREC_INDEX_B)
> -#define PREC_PAL_DATA(pipe)          _MMIO_PIPE(pipe, _PAL_PREC_DATA_A, 
> _PAL_PREC_DATA_B)
> -#define PREC_PAL_GC_MAX(pipe, i)     _MMIO(_PIPE(pipe, _PAL_PREC_GC_MAX_A, 
> _PAL_PREC_GC_MAX_B) + (i) * 4)
> -#define PREC_PAL_EXT_GC_MAX(pipe, i) _MMIO(_PIPE(pipe, 
> _PAL_PREC_EXT_GC_MAX_A, _PAL_PREC_EXT_GC_MAX_B) + (i) * 4)
> -#define PREC_PAL_EXT2_GC_MAX(pipe, i)        _MMIO(_PIPE(pipe, 
> _PAL_PREC_EXT2_GC_MAX_A, _PAL_PREC_EXT2_GC_MAX_B) + (i) * 4)
> +#define PREC_PAL_INDEX(pipe)         _MMIO_PIPE(pipe, _PAL_PREC_INDEX_A, \
> +                                                _PAL_PREC_INDEX_B, \
> +                                                DSB_WRITE)
> +#define PREC_PAL_DATA(pipe)          _MMIO_PIPE(pipe, _PAL_PREC_DATA_A, \
> +                                                _PAL_PREC_DATA_B, \
> +                                                DSB_INDEX_WRITE)
> +#define PREC_PAL_GC_MAX(pipe, i)     _MMIO(_PIPE(pipe, _PAL_PREC_GC_MAX_A, 
> _PAL_PREC_GC_MAX_B) + (i) * 4, \
> +                                           DSB_WRITE)
> +#define PREC_PAL_EXT_GC_MAX(pipe, i) _MMIO(_PIPE(pipe, 
> _PAL_PREC_EXT_GC_MAX_A, _PAL_PREC_EXT_GC_MAX_B) + (i) * 4, \
> +                                           DSB_WRITE)
> +#define PREC_PAL_EXT2_GC_MAX(pipe, i)        _MMIO(_PIPE(pipe, 
> _PAL_PREC_EXT2_GC_MAX_A, _PAL_PREC_EXT2_GC_MAX_B) + (i) * 4, \
> +                                           DSB_WRITE)
>  
>  #define _PRE_CSC_GAMC_INDEX_A        0x4A484
>  #define _PRE_CSC_GAMC_INDEX_B        0x4AC84
> @@ -10274,10 +10281,12 @@ enum skl_power_gate {
>  
>  #define PREC_PAL_MULTI_SEG_INDEX(pipe)       _MMIO_PIPE(pipe, \
>                                       _PAL_PREC_MULTI_SEG_INDEX_A, \
> -                                     _PAL_PREC_MULTI_SEG_INDEX_B)
> +                                     _PAL_PREC_MULTI_SEG_INDEX_B, \
> +                                     DSB_WRITE)
>  #define PREC_PAL_MULTI_SEG_DATA(pipe)        _MMIO_PIPE(pipe, \
>                                       _PAL_PREC_MULTI_SEG_DATA_A, \
> -                                     _PAL_PREC_MULTI_SEG_DATA_B)
> +                                     _PAL_PREC_MULTI_SEG_DATA_B, \
> +                                     DSB_INDEX_WRITE)
>  
>  /* pipe CSC & degamma/gamma LUTs on CHV */
>  #define _CGM_PIPE_A_CSC_COEFF01      (VLV_DISPLAY_BASE + 0x67900)

-- 
Jani Nikula, Intel Open Source Graphics Center
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