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| author | Jessica Zhang <quic_jesszhan@quicinc.com> | 2023-05-24 20:45:20 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-06-15 12:58:56 +0300 |
| commit | c223059e6f8340f7eac2319470984cbfc39c433b (patch) | |
| tree | 52b3c02329f7ebd174362c4e3b280b18e2d7e53c /drivers/gpu/drm | |
| parent | 44346191a210f04c52f8389b3bd989d4a2a3e1ba (diff) | |
| download | linux-c223059e6f8340f7eac2319470984cbfc39c433b.tar.xz | |
drm/msm/dpu: Fix slice_last_group_size calculation
Correct the math for slice_last_group_size so that it matches the
calculations downstream.
Fixes: c110cfd1753e ("drm/msm/disp/dpu1: Add support for DSC")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/539269/
Link: https://lore.kernel.org/r/20230329-rfc-msm-dsc-helper-v14-7-bafc7be95691@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c index 99ba7eebf5a4..509dbaa51d87 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c @@ -56,9 +56,10 @@ static void dpu_hw_dsc_config(struct dpu_hw_dsc *hw_dsc, if (is_cmd_mode) initial_lines += 1; - slice_last_group_size = 3 - (dsc->slice_width % 3); + slice_last_group_size = (dsc->slice_width + 2) % 3; + data = (initial_lines << 20); - data |= ((slice_last_group_size - 1) << 18); + data |= (slice_last_group_size << 18); /* bpp is 6.4 format, 4 LSBs bits are for fractional part */ data |= (dsc->bits_per_pixel << 8); data |= (dsc->block_pred_enable << 7); |