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drm: remove DRM_FORMAT_NV12MT

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So this has been merged originally in

commit 83052d4d5c
Author: Seung-Woo Kim <sw0312.kim@samsung.com>
Date:   Thu Dec 15 15:40:55 2011 +0900

    drm: Add multi buffer plane pixel formats

which hasn't seen a lot of review really. The problem is that it's not
a real pixel format, but just a different way to lay out NV12 pixels
in macroblocks, i.e. a tiling format.

The new way of doing this is with the soon-to-be-merged fb modifiers.

This was brough up in some long irc discussion around the entire
topic, as an example of where things have gone wrong. Luckily we can
correct the mistake:
- The kms side support for NV12MT is all dead code because
  format_check in drm_crtc.c never accepted NV12MT.
- The gem side for the gsc support doesn't look better: The code
  forgets to set the pixel format and makes a big mess with the tiling
  mode bits, inadvertedly setting them all.

Conclusion: This never really worked (at least not in upstream) and
hence we can safely correct our mistake here.

Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Clark <robclark@freedesktop.org>
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Rob Clark <robclark@freedesktop.org>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Acked-by: Joonyoung Shim <jy0922.shim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter 2015-02-03 16:37:45 +01:00
parent f79d1548b0
commit 083500baef
5 changed files with 2 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/exynos/exynos_drm_fimc.c
View File

@ -461,7 +461,6 @@ static int fimc_src_set_fmt_order(struct fimc_context *ctx, u32 fmt)
cfg |= EXYNOS_MSCTRL_C_INT_IN_3PLANE;
break;
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV12MT:
case DRM_FORMAT_NV16:
cfg |= (EXYNOS_MSCTRL_ORDER2P_LSB_CBCR |
EXYNOS_MSCTRL_C_INT_IN_2PLANE);
@ -511,7 +510,6 @@ static int fimc_src_set_fmt(struct device *dev, u32 fmt)
case DRM_FORMAT_YVU420:
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV21:
case DRM_FORMAT_NV12MT:
cfg |= EXYNOS_MSCTRL_INFORMAT_YCBCR420;
break;
default:
@ -524,10 +522,7 @@ static int fimc_src_set_fmt(struct device *dev, u32 fmt)
cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM);
cfg &= ~EXYNOS_CIDMAPARAM_R_MODE_MASK;
if (fmt == DRM_FORMAT_NV12MT)
cfg |= EXYNOS_CIDMAPARAM_R_MODE_64X32;
else
cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR;
cfg |= EXYNOS_CIDMAPARAM_R_MODE_LINEAR;
fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM);
@ -812,7 +807,6 @@ static int fimc_dst_set_fmt_order(struct fimc_context *ctx, u32 fmt)
cfg |= EXYNOS_CIOCTRL_YCBCR_3PLANE;
break;
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV12MT:
case DRM_FORMAT_NV16:
cfg |= EXYNOS_CIOCTRL_ORDER2P_LSB_CBCR;
cfg |= EXYNOS_CIOCTRL_YCBCR_2PLANE;
@ -867,7 +861,6 @@ static int fimc_dst_set_fmt(struct device *dev, u32 fmt)
case DRM_FORMAT_YUV420:
case DRM_FORMAT_YVU420:
case DRM_FORMAT_NV12:
case DRM_FORMAT_NV12MT:
case DRM_FORMAT_NV21:
cfg |= EXYNOS_CITRGFMT_OUTFORMAT_YCBCR420;
break;
@ -883,10 +876,7 @@ static int fimc_dst_set_fmt(struct device *dev, u32 fmt)
cfg = fimc_read(ctx, EXYNOS_CIDMAPARAM);
cfg &= ~EXYNOS_CIDMAPARAM_W_MODE_MASK;
if (fmt == DRM_FORMAT_NV12MT)
cfg |= EXYNOS_CIDMAPARAM_W_MODE_64X32;
else
cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR;
cfg |= EXYNOS_CIDMAPARAM_W_MODE_LINEAR;
fimc_write(ctx, cfg, EXYNOS_CIDMAPARAM);

6
drivers/gpu/drm/exynos/exynos_drm_gsc.c
View File

@ -542,9 +542,6 @@ static int gsc_src_set_fmt(struct device *dev, u32 fmt)
cfg |= (GSC_IN_CHROMA_ORDER_CBCR |
GSC_IN_YUV420_2P);
break;
case DRM_FORMAT_NV12MT:
cfg |= (GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE);
break;
default:
dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt);
return -EINVAL;
@ -809,9 +806,6 @@ static int gsc_dst_set_fmt(struct device *dev, u32 fmt)
cfg |= (GSC_OUT_CHROMA_ORDER_CBCR |
GSC_OUT_YUV420_2P);
break;
case DRM_FORMAT_NV12MT:
cfg |= (GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE);
break;
default:
dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt);
return -EINVAL;

1
drivers/gpu/drm/exynos/exynos_drm_plane.c
View File

@ -30,7 +30,6 @@ static const uint32_t formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_NV12,
DRM_FORMAT_NV12MT,
};
/*

2
drivers/gpu/drm/exynos/exynos_mixer.c
View File

@ -417,8 +417,6 @@ static void vp_video_buffer(struct mixer_context *ctx, int win)
win_data = &ctx->win_data[win];
switch (win_data->pixel_format) {
case DRM_FORMAT_NV12MT:
tiled_mode = true;
case DRM_FORMAT_NV12:
crcb_mode = false;
buf_num = 2;

3
include/uapi/drm/drm_fourcc.h
View File

@ -109,9 +109,6 @@
#define DRM_FORMAT_NV24 fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
#define DRM_FORMAT_NV42 fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
/* special NV12 tiled format */
#define DRM_FORMAT_NV12MT fourcc_code('T', 'M', '1', '2') /* 2x2 subsampled Cr:Cb plane 64x32 macroblocks */
/*
* 3 plane YCbCr
* index 0: Y plane, [7:0] Y