drm/i915: Store a pointer to the pixel format info for fbc

Rather than store the pixel format and look up the format info as
needed,  let's just store a pointer to the format info directly
and speed up our lookups.

Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479498793-31021-29-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 56002a5..89dbe55 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1026,7 +1026,7 @@ struct intel_fbc {
 
                struct {
                        u64 ilk_ggtt_offset;
-                       uint32_t pixel_format;
+                       const struct drm_format_info *format;
                        unsigned int stride;
                        int fence_reg;
                        unsigned int tiling_mode;
@@ -1042,7 +1042,7 @@ struct intel_fbc {
 
                struct {
                        u64 ggtt_offset;
-                       uint32_t pixel_format;
+                       const struct drm_format_info *format;
                        unsigned int stride;
                        int fence_reg;
                } fb;

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 62f215b..659cebc 100644 (file)
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -188,7 +188,7 @@ static void g4x_fbc_activate(struct drm_i915_private *dev_priv)
        u32 dpfc_ctl;
 
        dpfc_ctl = DPFC_CTL_PLANE(params->crtc.plane) | DPFC_SR_EN;
-       if (drm_format_plane_cpp(params->fb.pixel_format, 0) == 2)
+       if (params->fb.format->cpp[0] == 2)
                dpfc_ctl |= DPFC_CTL_LIMIT_2X;
        else
                dpfc_ctl |= DPFC_CTL_LIMIT_1X;
@@ -235,7 +235,7 @@ static void ilk_fbc_activate(struct drm_i915_private *dev_priv)
        int threshold = dev_priv->fbc.threshold;
 
        dpfc_ctl = DPFC_CTL_PLANE(params->crtc.plane);
-       if (drm_format_plane_cpp(params->fb.pixel_format, 0) == 2)
+       if (params->fb.format->cpp[0] == 2)
                threshold++;
 
        switch (threshold) {
@@ -303,7 +303,7 @@ static void gen7_fbc_activate(struct drm_i915_private *dev_priv)
        if (IS_IVYBRIDGE(dev_priv))
                dpfc_ctl |= IVB_DPFC_CTL_PLANE(params->crtc.plane);
 
-       if (drm_format_plane_cpp(params->fb.pixel_format, 0) == 2)
+       if (params->fb.format->cpp[0] == 2)
                threshold++;
 
        switch (threshold) {
@@ -581,7 +581,7 @@ static int intel_fbc_alloc_cfb(struct intel_crtc *crtc)
        WARN_ON(drm_mm_node_allocated(&fbc->compressed_fb));
 
        size = intel_fbc_calculate_cfb_size(dev_priv, &fbc->state_cache);
-       fb_cpp = drm_format_plane_cpp(fbc->state_cache.fb.pixel_format, 0);
+       fb_cpp = fbc->state_cache.fb.format->cpp[0];
 
        ret = find_compression_threshold(dev_priv, &fbc->compressed_fb,
                                         size, fb_cpp);
@@ -764,7 +764,7 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc,
         * platforms that need. */
        if (IS_GEN(dev_priv, 5, 6))
                cache->fb.ilk_ggtt_offset = i915_gem_object_ggtt_offset(obj, NULL);
-       cache->fb.pixel_format = fb->pixel_format;
+       cache->fb.format = fb->format;
        cache->fb.stride = fb->pitches[0];
        cache->fb.fence_reg = get_fence_id(fb);
        cache->fb.tiling_mode = i915_gem_object_get_tiling(obj);
@@ -823,7 +823,7 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc)
                return false;
        }
 
-       if (!pixel_format_is_valid(dev_priv, cache->fb.pixel_format)) {
+       if (!pixel_format_is_valid(dev_priv, cache->fb.format->format)) {
                fbc->no_fbc_reason = "pixel format is invalid";
                return false;
        }
@@ -892,7 +892,7 @@ static void intel_fbc_get_reg_params(struct intel_crtc *crtc,
        params->crtc.plane = crtc->plane;
        params->crtc.fence_y_offset = get_crtc_fence_y_offset(crtc);
 
-       params->fb.pixel_format = cache->fb.pixel_format;
+       params->fb.format = cache->fb.format;
        params->fb.stride = cache->fb.stride;
        params->fb.fence_reg = cache->fb.fence_reg;