linux-kernel - [PATCH v2 1/3] drm: Add some new format DRM_FORMAT_NVXX

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Date:   Thu, 26 Sep 2019 16:17:26 +0800
From:   Sandy Huang <hjc@...k-chips.com>
To:     dri-devel@...ts.freedesktop.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     hjc@...k-chips.com, heiko@...ech.de, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/3] drm: Add some new format DRM_FORMAT_NVXX_10

These new format is supported by some rockchip socs:

DRM_FORMAT_NV12_10/DRM_FORMAT_NV21_10
DRM_FORMAT_NV16_10/DRM_FORMAT_NV61_10
DRM_FORMAT_NV24_10/DRM_FORMAT_NV42_10

Signed-off-by: Sandy Huang <hjc@...k-chips.com>
---
 drivers/gpu/drm/drm_fourcc.c  | 18 ++++++++++++++++++
 include/uapi/drm/drm_fourcc.h | 14 ++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index c630064..ccd78a3 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -261,6 +261,24 @@ const struct drm_format_info *__drm_format_info(u32 format)
 		{ .format = DRM_FORMAT_P016,		.depth = 0,  .num_planes = 2,
 		  .char_per_block = { 2, 4, 0 }, .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 },
 		  .hsub = 2, .vsub = 2, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV12_10,		.depth = 0,  .num_planes = 2,
+		  .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 },
+		  .hsub = 2, .vsub = 2, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV21_10,		.depth = 0,  .num_planes = 2,
+		  .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 },
+		  .hsub = 2, .vsub = 2, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV16_10,		.depth = 0,  .num_planes = 2,
+		  .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 },
+		  .hsub = 2, .vsub = 1, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV61_10,		.depth = 0,  .num_planes = 2,
+		  .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 },
+		  .hsub = 2, .vsub = 1, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV24_10,		.depth = 0,  .num_planes = 2,
+		  .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 },
+		  .hsub = 1, .vsub = 1, .is_yuv = true},
+		{ .format = DRM_FORMAT_NV42_10,		.depth = 0,  .num_planes = 2,
+		  .char_per_block = { 5, 10, 0 }, .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 },
+		  .hsub = 1, .vsub = 1, .is_yuv = true},
 		{ .format = DRM_FORMAT_P210,		.depth = 0,
 		  .num_planes = 2, .char_per_block = { 2, 4, 0 },
 		  .block_w = { 1, 0, 0 }, .block_h = { 1, 0, 0 }, .hsub = 2,
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 3feeaa3..08e2221 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -238,6 +238,20 @@ extern "C" {
 #define DRM_FORMAT_NV42		fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 
 /*
+ * 2 plane YCbCr
+ * index 0 = Y plane, Y3:Y2:Y1:Y0 10:10:10:10
+ * index 1 = Cb:Cr plane, Cb3:Cr3:Cb2:Cr2:Cb1:Cr1:Cb0:Cr0 10:10:10:10:10:10:10:10
+ * or
+ * index 1 = Cr:Cb plane, Cr3:Cb3:Cr2:Cb2:Cr1:Cb1:Cr0:Cb0 10:10:10:10:10:10:10:10
+ */
+#define DRM_FORMAT_NV12_10	fourcc_code('N', 'A', '1', '2') /* 2x2 subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV21_10	fourcc_code('N', 'A', '2', '1') /* 2x2 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV16_10	fourcc_code('N', 'A', '1', '6') /* 2x1 subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV61_10	fourcc_code('N', 'A', '6', '1') /* 2x1 subsampled Cb:Cr plane */
+#define DRM_FORMAT_NV24_10	fourcc_code('N', 'A', '2', '4') /* non-subsampled Cr:Cb plane */
+#define DRM_FORMAT_NV42_10	fourcc_code('N', 'A', '4', '2') /* non-subsampled Cb:Cr plane */
+
+/*
  * 2 plane YCbCr MSB aligned
  * index 0 = Y plane, [15:0] Y:x [10:6] little endian
  * index 1 = Cr:Cb plane, [31:0] Cr:x:Cb:x [10:6:10:6] little endian
-- 
2.7.4