[PATCH v8 2/2] drm/i915: Adding YUV444 packed format support for skl+

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PLANE_CTL_FORMAT_AYUV is already supported, according to hardware
specification.

v2: Edited commit message, removed redundant whitespaces.

v3: Fixed fallthrough logic for the format switch cases.

v4: Yet again fixed fallthrough logic, to reuse code from other case
    labels.

v5: Started to use XYUV instead of AYUV, as we don't use alpha.

v6: Removed unneeded initializer for new XYUV format.

v7: Added scaling support for DRM_FORMAT_XYUV

v8: Edited commit message to be more clear about skl+, renamed
    PLANE_CTL_FORMAT_AYUV to PLANE_CTL_FORMAT_XYUV as this format
    doesn't support per-pixel alpha. Fixed minor code issues.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_reg.h      | 2 +-
 drivers/gpu/drm/i915/intel_display.c | 9 +++++++++
 drivers/gpu/drm/i915/intel_sprite.c  | 1 +
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8534f88a60f6..e0c8480aaa02 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6499,7 +6499,7 @@ enum {
 #define   PLANE_CTL_FORMAT_XRGB_2101010		(2 << 24)
 #define   PLANE_CTL_FORMAT_XRGB_8888		(4 << 24)
 #define   PLANE_CTL_FORMAT_XRGB_16161616F	(6 << 24)
-#define   PLANE_CTL_FORMAT_AYUV			(8 << 24)
+#define   PLANE_CTL_FORMAT_XYUV			(8 << 24)
 #define   PLANE_CTL_FORMAT_INDEXED		(12 << 24)
 #define   PLANE_CTL_FORMAT_RGB_565		(14 << 24)
 #define   ICL_PLANE_CTL_FORMAT_MASK		(0x1f << 23)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 30fdfd1a3037..69ddecbcc224 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -86,6 +86,7 @@ static const uint32_t skl_primary_formats[] = {
 	DRM_FORMAT_YVYU,
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_VYUY,
+	DRM_FORMAT_XYUV,
 };
 
 static const uint32_t skl_pri_planar_formats[] = {
@@ -101,6 +102,7 @@ static const uint32_t skl_pri_planar_formats[] = {
 	DRM_FORMAT_YVYU,
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_VYUY,
+	DRM_FORMAT_XYUV,
 	DRM_FORMAT_NV12,
 };
 
@@ -2672,6 +2674,8 @@ int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
 		return DRM_FORMAT_RGB565;
 	case PLANE_CTL_FORMAT_NV12:
 		return DRM_FORMAT_NV12;
+	case PLANE_CTL_FORMAT_XYUV:
+		return DRM_FORMAT_XYUV;
 	default:
 	case PLANE_CTL_FORMAT_XRGB_8888:
 		if (rgb_order) {
@@ -3501,6 +3505,8 @@ static u32 skl_plane_ctl_format(uint32_t pixel_format)
 		return PLANE_CTL_FORMAT_XRGB_2101010;
 	case DRM_FORMAT_XBGR2101010:
 		return PLANE_CTL_ORDER_RGBX | PLANE_CTL_FORMAT_XRGB_2101010;
+	case DRM_FORMAT_XYUV:
+		return PLANE_CTL_FORMAT_XYUV;
 	case DRM_FORMAT_YUYV:
 		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
 	case DRM_FORMAT_YVYU:
@@ -4959,6 +4965,7 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
 	case DRM_FORMAT_UYVY:
 	case DRM_FORMAT_VYUY:
 	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_XYUV:
 		break;
 	default:
 		DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
@@ -13414,6 +13421,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_UYVY:
 	case DRM_FORMAT_VYUY:
 	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_XYUV:
 		if (modifier == I915_FORMAT_MOD_Yf_TILED)
 			return true;
 		/* fall through */
@@ -14517,6 +14525,7 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 		}
 		break;
 	case DRM_FORMAT_ABGR8888:
+	case DRM_FORMAT_XYUV:
 		if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
 		    INTEL_GEN(dev_priv) < 9) {
 			DRM_DEBUG_KMS("unsupported pixel format: %s\n",
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index c286dda625e4..2ac9471974c2 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1420,6 +1420,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 	case DRM_FORMAT_UYVY:
 	case DRM_FORMAT_VYUY:
 	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_XYUV:
 		if (modifier == I915_FORMAT_MOD_Yf_TILED)
 			return true;
 		/* fall through */
-- 
2.17.0

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