[Intel-gfx] [PATCH 2/4] drm/i915/color: move check of gamma_enable to specific func/platform

[Ville Syrjälä]

On Fri, Oct 04, 2019 at 01:56:08PM +0530, Swati Sharma wrote:
> Moved common code to check gamma_enable to specific funcs per platform
> in bit_precision func. icl doesn't support that and chv has separate
> enable knob for CGM LUT.
> 
> Signed-off-by: Swati Sharma <swati2.sharma at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_color.c | 23 +++++++++++++++++-----
>  1 file changed, 18 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
> index 8f02313a7fef..44ce75f051ad 100644
> --- a/drivers/gpu/drm/i915/display/intel_color.c
> +++ b/drivers/gpu/drm/i915/display/intel_color.c
> @@ -1420,6 +1420,9 @@ 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;
> @@ -1433,6 +1436,9 @@ 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;
>  
> @@ -1449,14 +1455,24 @@ 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->cgm_mode & CGM_PIPE_MODE_GAMMA)
> -		return 10;
> +	if (crtc_state->cgm_mode) {
> +		if ((crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA) == 0)
> +			return 0;
> +		else
> +			return 10;
> +	}
> +
> +	if (!crtc_state->gamma_enable)
> +		return 0;
>  	else
>  		return i9xx_gamma_precision(crtc_state);

Again could simplify to just:

if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
	return 10;
else
	return i9xx_gamma_precision(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;
> @@ -1473,9 +1489,6 @@ int intel_color_get_gamma_bit_precision(const struct intel_crtc_state *crtc_stat
>  	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);
> -- 
> 2.23.0

-- 
Ville Syrjälä
Intel