[Intel-gfx] [PATCH 03/11] drm/i915: Add tiling attribute to the modifier descriptor

[Imre Deak]

On Wed, Oct 13, 2021 at 11:18:27PM +0300, Ville Syrjälä wrote:
> On Thu, Oct 07, 2021 at 11:35:09PM +0300, Imre Deak wrote:
> > Add a tiling atttribute to the modifier descriptor, which let's us
> > get the tiling without listing the modifiers twice.
> > 
> > Signed-off-by: Imre Deak <imre.deak at intel.com>
> > ---
> >  drivers/gpu/drm/i915/display/intel_fb.c | 20 ++++++++------------
> >  1 file changed, 8 insertions(+), 12 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
> > index 2543232580885..ef3cd375c9942 100644
> > --- a/drivers/gpu/drm/i915/display/intel_fb.c
> > +++ b/drivers/gpu/drm/i915/display/intel_fb.c
> > @@ -115,6 +115,7 @@ const struct intel_modifier_desc {
> >  	u64 display_versions;
> >  	const struct drm_format_info *formats;
> >  	int format_count;
> > +	u8 tiling;
> >  
> >  	struct {
> >  #define INTEL_CCS_RC		BIT(0)
> > @@ -132,10 +133,12 @@ const struct intel_modifier_desc {
> >  	{
> >  		.id = I915_FORMAT_MOD_X_TILED,
> >  		.display_versions = DISPLAY_VER_MASK_ALL,
> > +		.tiling = I915_TILING_X,
> >  	},
> >  	{
> >  		.id = I915_FORMAT_MOD_Y_TILED,
> >  		.display_versions = DISPLAY_VER_MASK(9, 13),
> > +		.tiling = I915_TILING_Y,
> >  	},
> >  	{
> >  		.id = I915_FORMAT_MOD_Yf_TILED,
> > @@ -144,6 +147,7 @@ const struct intel_modifier_desc {
> >  	{
> >  		.id = I915_FORMAT_MOD_Y_TILED_CCS,
> >  		.display_versions = DISPLAY_VER_MASK(9, 11),
> > +		.tiling = I915_TILING_Y,
> >  
> >  		.ccs.type = INTEL_CCS_RC,
> >  
> > @@ -160,6 +164,7 @@ const struct intel_modifier_desc {
> >  	{
> >  		.id = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
> >  		.display_versions = DISPLAY_VER_MASK(12, 13),
> > +		.tiling = I915_TILING_Y,
> >  
> >  		.ccs.type = INTEL_CCS_RC,
> >  
> > @@ -168,6 +173,7 @@ const struct intel_modifier_desc {
> >  	{
> >  		.id = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
> >  		.display_versions = DISPLAY_VER_MASK(12, 13),
> > +		.tiling = I915_TILING_Y,
> >  
> >  		.ccs.type = INTEL_CCS_RC_CC,
> >  
> > @@ -176,6 +182,7 @@ const struct intel_modifier_desc {
> >  	{
> >  		.id = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
> >  		.display_versions = DISPLAY_VER_MASK(12, 13),
> > +		.tiling = I915_TILING_Y,
> >  
> >  		.ccs.type = INTEL_CCS_MC,
> >  
> > @@ -556,18 +563,7 @@ intel_fb_align_height(const struct drm_framebuffer *fb,
> >  
> >  static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
> >  {
> > -	switch (fb_modifier) {
> > -	case I915_FORMAT_MOD_X_TILED:
> > -		return I915_TILING_X;
> > -	case I915_FORMAT_MOD_Y_TILED:
> > -	case I915_FORMAT_MOD_Y_TILED_CCS:
> > -	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
> > -	case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
> > -	case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
> > -		return I915_TILING_Y;
> > -	default:
> > -		return I915_TILING_NONE;
> 
> Had to double check that I915_TILING_NONE is really 0. It is.

Yea, I guess better to explicitly init it.

> > -	}
> > +	return lookup_modifier(fb_modifier)->tiling;
> >  }
> >  
> >  unsigned int intel_cursor_alignment(const struct drm_i915_private *i915)
> > -- 
> > 2.27.0
> 
> -- 
> Ville Syrjälä
> Intel