[Intel-gfx] [PATCH 8/9] drm/i915: Do not enable HDR mode when color keying is active

[Shankar, Uma]

>-----Original Message-----
>From: Intel-gfx <intel-gfx-bounces at lists.freedesktop.org> On Behalf Of Ville Syrjala
>Sent: Tuesday, October 8, 2019 9:45 PM
>To: intel-gfx at lists.freedesktop.org
>Subject: [Intel-gfx] [PATCH 8/9] drm/i915: Do not enable HDR mode when color
>keying is active
>
>From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
>The spec says that color keying and HDR mode are mutually exclusive.
>So let's not enable HDR mode when color keying is active.

Looks good to me.
Reviewed-by: Uma Shankar <uma.shankar at intel.com>

>Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>---
> drivers/gpu/drm/i915/display/intel_atomic_plane.c  |  5 +++++
> drivers/gpu/drm/i915/display/intel_display.c       | 13 ++++++++++---
> drivers/gpu/drm/i915/display/intel_display_types.h |  1 +
> 3 files changed, 16 insertions(+), 3 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
>b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
>index 98b7766eaa7a..f64204f6f37f 100644
>--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
>+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
>@@ -150,6 +150,7 @@ int intel_plane_atomic_check_with_state(const struct
>intel_crtc_state *old_crtc_
> 	new_crtc_state->active_planes &= ~BIT(plane->id);
> 	new_crtc_state->nv12_planes &= ~BIT(plane->id);
> 	new_crtc_state->c8_planes &= ~BIT(plane->id);
>+	new_crtc_state->ckey_planes &= ~BIT(plane->id);
> 	new_crtc_state->data_rate[plane->id] = 0;
> 	new_plane_state->base.visible = false;
>
>@@ -172,6 +173,10 @@ int intel_plane_atomic_check_with_state(const struct
>intel_crtc_state *old_crtc_
> 	    fb->format->format == DRM_FORMAT_C8)
> 		new_crtc_state->c8_planes |= BIT(plane->id);
>
>+	if (new_plane_state->base.visible &&
>+	    new_plane_state->ckey.flags)
>+		new_crtc_state->ckey_planes |= BIT(plane->id);
>+
> 	if (new_plane_state->base.visible || old_plane_state->base.visible)
> 		new_crtc_state->update_planes |= BIT(plane->id);
>
>diff --git a/drivers/gpu/drm/i915/display/intel_display.c
>b/drivers/gpu/drm/i915/display/intel_display.c
>index a8124f01bdb2..c553a3417891 100644
>--- a/drivers/gpu/drm/i915/display/intel_display.c
>+++ b/drivers/gpu/drm/i915/display/intel_display.c
>@@ -9514,6 +9514,15 @@ static void haswell_set_pipeconf(const struct
>intel_crtc_state *crtc_state)
> 	POSTING_READ(PIPECONF(cpu_transcoder));
> }
>
>+static bool icl_can_hdr_mode(const struct intel_crtc_state *crtc_state)
>+{
>+	u8 ckey_planes = crtc_state->ckey_planes;
>+	u8 sdr_planes = crtc_state->active_planes &
>+		~(icl_hdr_plane_mask() | BIT(PLANE_CURSOR));
>+
>+	return !ckey_planes && !sdr_planes;
>+}
>+
> static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state)  {
> 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
>@@ -9549,9 +9558,7 @@ static void bdw_set_pipemisc(const struct intel_crtc_state
>*crtc_state)
> 		val |= PIPEMISC_YUV420_ENABLE |
> 			PIPEMISC_YUV420_MODE_FULL_BLEND;
>
>-	if (INTEL_GEN(dev_priv) >= 11 &&
>-	    (crtc_state->active_planes & ~(icl_hdr_plane_mask() |
>-					   BIT(PLANE_CURSOR))) == 0)
>+	if (INTEL_GEN(dev_priv) >= 11 && icl_can_hdr_mode(crtc_state))
> 		val |= PIPEMISC_HDR_MODE_PRECISION;
>
> 	I915_WRITE(PIPEMISC(crtc->pipe), val); diff --git
>a/drivers/gpu/drm/i915/display/intel_display_types.h
>b/drivers/gpu/drm/i915/display/intel_display_types.h
>index 40390d855815..4935ea41d3e1 100644
>--- a/drivers/gpu/drm/i915/display/intel_display_types.h
>+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
>@@ -949,6 +949,7 @@ struct intel_crtc_state {
> 	u8 active_planes;
> 	u8 nv12_planes;
> 	u8 c8_planes;
>+	u8 ckey_planes;
>
> 	/* bitmask of planes that will be updated during the commit */
> 	u8 update_planes;
>--
>2.21.0
>
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