[PATCH v12 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.

v9: Moved DRM format check to proper place in intel_framebuffer_init.

v10: Added missing XYUV format to sprite planes for skl+.

v11: Changed DRM_FORMAT_XYUV to be DRM_FORMAT_XYUV8888.

v12: Fixed rebase conflicts

Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_reg.h      |  2 +-
 drivers/gpu/drm/i915/intel_display.c | 12 ++++++++++++
 drivers/gpu/drm/i915/intel_sprite.c  |  3 +++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 158cf4716d03..5d1facecda33 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6502,7 +6502,7 @@ 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 05125c7c2aa1..3af1ef26fdb7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2617,6 +2617,8 @@ 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_XYUV8888;
 	default:
 	case PLANE_CTL_FORMAT_XRGB_8888:
 		if (rgb_order) {
@@ -3493,6 +3495,8 @@ 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_XYUV8888:
+		return PLANE_CTL_FORMAT_XYUV;
 	case DRM_FORMAT_YUYV:
 		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
 	case DRM_FORMAT_YVYU:
@@ -4964,6 +4968,7 @@ 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_XYUV8888:
 		break;
 	default:
 		DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
@@ -14513,6 +14518,13 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 			goto err;
 		}
 		break;
+	case DRM_FORMAT_XYUV8888:
+		if (INTEL_GEN(dev_priv) < 9) {
+			DRM_DEBUG_KMS("unsupported pixel format: %s\n",
+				      drm_get_format_name(mode_cmd->pixel_format, &format_name));
+			goto err;
+		}
+		break;
 	case DRM_FORMAT_YUYV:
 	case DRM_FORMAT_UYVY:
 	case DRM_FORMAT_YVYU:
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 1293182dbcb0..69188a8b899b 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1725,6 +1725,7 @@ static const uint32_t skl_plane_formats[] = {
 	DRM_FORMAT_YVYU,
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_VYUY,
+	DRM_FORMAT_XYUV8888,
 };
 
 static const uint32_t skl_planar_formats[] = {
@@ -1741,6 +1742,7 @@ static const uint32_t skl_planar_formats[] = {
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_VYUY,
 	DRM_FORMAT_NV12,
+	DRM_FORMAT_XYUV8888,
 };
 
 static const uint64_t skl_plane_format_modifiers_noccs[] = {
@@ -1882,6 +1884,7 @@ 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_XYUV8888:
 		if (modifier == I915_FORMAT_MOD_Yf_TILED)
 			return true;
 		/* fall through */
-- 
2.17.1

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