With NV12, NV21, NV16 and NV61 formats, the size of one pixel from the
UV plane (plane #1) is one byte.
Indeed, these pixel formats use 4:2:x chroma subsampling: the chroma
pixels are sampled at half the luma: for 2 pixels, there are 1 Cb +
1 Cr = 2 bytes.
So for plane #1, the correct size is actually 1 byte per pixel.
Signed-off-by: Fabien Dessenne <fabien.dessenne at st.com>
---
drivers/gpu/drm/drm_crtc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 3313f7e..572c6fa 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -5618,10 +5618,6 @@ int drm_format_plane_cpp(uint32_t format, int plane)
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
return 2;
- case DRM_FORMAT_NV12:
- case DRM_FORMAT_NV21:
- case DRM_FORMAT_NV16:
- case DRM_FORMAT_NV61:
case DRM_FORMAT_NV24:
case DRM_FORMAT_NV42:
return plane ? 2 : 1;
@@ -5635,6 +5631,10 @@ int drm_format_plane_cpp(uint32_t format, int plane)
case DRM_FORMAT_YVU422:
case DRM_FORMAT_YUV444:
case DRM_FORMAT_YVU444:
+ case DRM_FORMAT_NV12:
+ case DRM_FORMAT_NV21:
+ case DRM_FORMAT_NV16:
+ case DRM_FORMAT_NV61:
return 1;
default:
drm_fb_get_bpp_depth(format, &depth, &bpp);
--
1.9.1
