Gen9+ platforms allow CRTC's to be programmed with a background/canvas
color below the programmable planes. Let's expose this for use by
compositors.
v2:
- Split out bgcolor sanitization and programming of csc/gamma bits to a
separate patch that we can land before the ABI changes are ready to
go in. (Ville)
- Change a temporary variable name to be more consistent with
other similar functions. (Ville)
- Change register name to SKL_CANVAS for consistency with the
CHV_CANVAS register.
v3:
- Switch register name back to SKL_BOTTOM_COLOR. (Ville)
- Use non-_FW register write. (Ville)
- Minor parameter rename for consistency. (Ville)
v4:
- Removed use of bgcolor_changed flag.
v5:
- s/uint64_t/u64/
v6:
- Rebase onto latest drm-tip (bgcolor writing now moves to the new
color_commit function added by Ville's series)
Cc: dri-de...@lists.freedesktop.org
Cc: wei.c...@intel.com
Cc: harish.krupo....@intel.com
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 9 +++++++++
drivers/gpu/drm/i915/intel_color.c | 11 ++++++++---
drivers/gpu/drm/i915/intel_display.c | 11 +++++++++++
3 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 2aeea977283f..0d9d951512af 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3060,6 +3060,15 @@ static int i915_display_info(struct seq_file *m, void
*unused)
intel_plane_info(m, crtc);
}
+ if (INTEL_GEN(dev_priv) >= 9 && pipe_config->base.active) {
+ u64 background = pipe_config->base.bgcolor;
+
+ seq_printf(m, "\tbackground color (10bpc): r=%x g=%x
b=%x\n",
+ DRM_ARGB_RED(background, 10),
+ DRM_ARGB_GREEN(background, 10),
+ DRM_ARGB_BLUE(background, 10));
+ }
+
seq_printf(m, "\tunderrun reporting: cpu=%s pch=%s \n",
yesno(!crtc->cpu_fifo_underrun_disabled),
yesno(!crtc->pch_fifo_underrun_disabled));
diff --git a/drivers/gpu/drm/i915/intel_color.c
b/drivers/gpu/drm/i915/intel_color.c
index da7a07d5ccea..1e329a3ee6bd 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -424,12 +424,17 @@ static void skl_color_commit(const struct
intel_crtc_state *crtc_state)
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
+ u64 propval = crtc_state->base.bgcolor;
u32 val = 0;
+ /* Hardware is programmed with 10 bits of precision */
+ val = DRM_ARGB_RED(propval, 10) << 20
+ | DRM_ARGB_GREEN(propval, 10) << 10
+ | DRM_ARGB_BLUE(propval, 10);
+
/*
- * We don't (yet) allow userspace to control the pipe background color,
- * so force it to black, but apply pipe gamma and CSC appropriately
- * so that its handling will match how we program our planes.
+ * Apply pipe gamma and CSC appropriately so that its handling will
+ * match how we program our planes.
*/
if (crtc_state->gamma_enable)
val |= SKL_BOTTOM_COLOR_GAMMA_ENABLE;
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index afa21daaae51..49e99d73ef89 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11220,6 +11220,8 @@ static int intel_crtc_atomic_check(struct drm_crtc
*crtc,
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_crtc_state *pipe_config =
to_intel_crtc_state(crtc_state);
+ struct drm_crtc_state *old_crtc_state =
+ drm_atomic_get_old_crtc_state(crtc_state->state, crtc);
int ret;
bool mode_changed = needs_modeset(crtc_state);
@@ -11242,6 +11244,9 @@ static int intel_crtc_atomic_check(struct drm_crtc
*crtc,
return ret;
}
+ if (crtc_state->bgcolor != old_crtc_state->bgcolor)
+ pipe_config->update_pipe = true;
+
ret = 0;
if (dev_priv->display.compute_pipe_wm) {
ret = dev_priv->display.compute_pipe_wm(pipe_config);
@@ -14423,6 +14428,9 @@ static int intel_crtc_init(struct drm_i915_private
*dev_priv, enum pipe pipe)
WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
+ if (INTEL_GEN(dev_priv) >= 9)
+ drm_crtc_add_bgcolor_property(&intel_crtc->base);
+
return 0;
fail:
@@ -15665,6 +15673,9 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+ /* Always force bgcolor to solid black */
+ crtc_state->base.bgcolor = drm_argb(16, 0xFFFF, 0, 0, 0);
+
/* Clear any frame start delays used for debugging left by the BIOS */
if (crtc->active && !transcoder_is_dsi(cpu_transcoder)) {
i915_reg_t reg = PIPECONF(cpu_transcoder);
--
2.14.5
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