drm/i915/fbc: don't store the fb_id on reg_params

We don't actually use fb_id anywhere. We already compare all
parameters that matter to the hardware: pixel format, stride,
fence_reg and ggtt_offset. The ID shouldn't make a difference.

Besides, we already update the FBC data at every modeset/flip, so this
can't change behind our backs.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1453210558-7875-23-git-send-email-paulo.r.zanoni@intel.com

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e4da97c..52cd352 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -933,7 +933,6 @@ struct intel_fbc {
 
                struct {
                        u64 ilk_ggtt_offset;
-                       uint32_t id;
                        uint32_t pixel_format;
                        unsigned int stride;
                        int fence_reg;
@@ -950,7 +949,6 @@ struct intel_fbc {
 
                struct {
                        u64 ggtt_offset;
-                       uint32_t id;
                        uint32_t pixel_format;
                        unsigned int stride;
                        int fence_reg;

diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index cdd99cf..35e92bc 100644 (file)
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -735,7 +735,6 @@ static void intel_fbc_update_state_cache(struct intel_crtc *crtc)
         * platforms that need. */
        if (dev_priv->fbc.activate == ilk_fbc_activate)
                cache->fb.ilk_ggtt_offset = i915_gem_obj_ggtt_offset(obj);
-       cache->fb.id = fb->base.id;
        cache->fb.pixel_format = fb->pixel_format;
        cache->fb.stride = fb->pitches[0];
        cache->fb.fence_reg = obj->fence_reg;
@@ -858,7 +857,6 @@ 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.id = cache->fb.id;
        params->fb.pixel_format = cache->fb.pixel_format;
        params->fb.stride = cache->fb.stride;
        params->fb.fence_reg = cache->fb.fence_reg;