[Intel-gfx] [PATCH v4] drm/i915: Adding YUV444 packed format(DRM_FORMAT_AYUV) support.

[StanLis]

From: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>

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.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 7 +++++++
 drivers/gpu/drm/i915/intel_sprite.c  | 1 +
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 56818a45181c..b121b3378aa2 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_AYUV,
 };
 
 static const uint32_t skl_pri_planar_formats[] = {
@@ -102,6 +103,7 @@ static const uint32_t skl_pri_planar_formats[] = {
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_VYUY,
 	DRM_FORMAT_NV12,
+	DRM_FORMAT_AYUV,
 };
 
 static const uint64_t skl_format_modifiers_noccs[] = {
@@ -3497,6 +3499,8 @@ 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_AYUV:
+		return PLANE_CTL_FORMAT_AYUV;
 	case DRM_FORMAT_YUYV:
 		return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
 	case DRM_FORMAT_YVYU:
@@ -13371,6 +13375,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 	}
 
 	switch (format) {
+
 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_XBGR8888:
 	case DRM_FORMAT_ARGB8888:
@@ -13390,6 +13395,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 		if (modifier == I915_FORMAT_MOD_Yf_TILED)
 			return true;
 		/* fall through */
+	case DRM_FORMAT_AYUV:
 	case DRM_FORMAT_C8:
 		if (modifier == DRM_FORMAT_MOD_LINEAR ||
 		    modifier == I915_FORMAT_MOD_X_TILED ||
@@ -14510,6 +14516,7 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 			goto err;
 		}
 		break;
+	case DRM_FORMAT_AYUV:
 	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 344c0e709b19..ee9f7242aa2b 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1424,6 +1424,7 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 		if (modifier == I915_FORMAT_MOD_Yf_TILED)
 			return true;
 		/* fall through */
+	case DRM_FORMAT_AYUV:
 	case DRM_FORMAT_C8:
 		if (modifier == DRM_FORMAT_MOD_LINEAR ||
 		    modifier == I915_FORMAT_MOD_X_TILED ||
-- 
2.17.0