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| author | Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> | 2018-08-22 16:18:19 +0100 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-10-02 11:54:26 +0100 |
| commit | b11507815d1be0173e27990ffcae6da58eadbc10 (patch) | |
| tree | 1ec4ce0f8c2ebf0df24bc795a58863dbe9165b24 /drivers/gpu/drm/arm/malidp_hw.c | |
| parent | cabce6343fdff516f954c367d0d57dd566244942 (diff) | |
| download | linux-stable-b11507815d1be0173e27990ffcae6da58eadbc10.tar.gz linux-stable-b11507815d1be0173e27990ffcae6da58eadbc10.tar.bz2 linux-stable-b11507815d1be0173e27990ffcae6da58eadbc10.zip | |
drm/malidp: Fix writeback in NV12
When we want to writeback to memory in NV12 format we need to program
the RGB2YUV coefficients. Currently, we don't program the coefficients
and NV12 doesn't work at all.
This patchset fixes that by programming a sane default(bt709, limited
range) as rgb2yuv coefficients.
In the long run, probably we need to think of a way for userspace to
be able to program that, but for now I think this is better than not
working at all or not advertising NV12 as a supported format for
memwrite.
Changes since v1:
- Write the rgb2yuv coefficients only once, since we don't change
them at all, just write them the first time NV12 is programmed,
suggested by Brian Starkey, here [1]
[1] https://lists.freedesktop.org/archives/dri-devel/2018-August/186819.html
Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers/gpu/drm/arm/malidp_hw.c')
| -rw-r--r-- | drivers/gpu/drm/arm/malidp_hw.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c index c94a4422e0e9..2781e462c1ed 100644 --- a/drivers/gpu/drm/arm/malidp_hw.c +++ b/drivers/gpu/drm/arm/malidp_hw.c @@ -384,7 +384,8 @@ static long malidp500_se_calc_mclk(struct malidp_hw_device *hwdev, static int malidp500_enable_memwrite(struct malidp_hw_device *hwdev, dma_addr_t *addrs, s32 *pitches, - int num_planes, u16 w, u16 h, u32 fmt_id) + int num_planes, u16 w, u16 h, u32 fmt_id, + const s16 *rgb2yuv_coeffs) { u32 base = MALIDP500_SE_MEMWRITE_BASE; u32 de_base = malidp_get_block_base(hwdev, MALIDP_DE_BLOCK); @@ -416,6 +417,16 @@ static int malidp500_enable_memwrite(struct malidp_hw_device *hwdev, malidp_hw_write(hwdev, MALIDP_DE_H_ACTIVE(w) | MALIDP_DE_V_ACTIVE(h), MALIDP500_SE_MEMWRITE_OUT_SIZE); + + if (rgb2yuv_coeffs) { + int i; + + for (i = 0; i < MALIDP_COLORADJ_NUM_COEFFS; i++) { + malidp_hw_write(hwdev, rgb2yuv_coeffs[i], + MALIDP500_SE_RGB_YUV_COEFFS + i * 4); + } + } + malidp_hw_setbits(hwdev, MALIDP_SE_MEMWRITE_EN, MALIDP500_SE_CONTROL); return 0; @@ -658,7 +669,8 @@ static long malidp550_se_calc_mclk(struct malidp_hw_device *hwdev, static int malidp550_enable_memwrite(struct malidp_hw_device *hwdev, dma_addr_t *addrs, s32 *pitches, - int num_planes, u16 w, u16 h, u32 fmt_id) + int num_planes, u16 w, u16 h, u32 fmt_id, + const s16 *rgb2yuv_coeffs) { u32 base = MALIDP550_SE_MEMWRITE_BASE; u32 de_base = malidp_get_block_base(hwdev, MALIDP_DE_BLOCK); @@ -689,6 +701,15 @@ static int malidp550_enable_memwrite(struct malidp_hw_device *hwdev, malidp_hw_setbits(hwdev, MALIDP550_SE_MEMWRITE_ONESHOT | MALIDP_SE_MEMWRITE_EN, MALIDP550_SE_CONTROL); + if (rgb2yuv_coeffs) { + int i; + + for (i = 0; i < MALIDP_COLORADJ_NUM_COEFFS; i++) { + malidp_hw_write(hwdev, rgb2yuv_coeffs[i], + MALIDP550_SE_RGB_YUV_COEFFS + i * 4); + } + } + return 0; } |