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drm/msm/dsi: Allow values of 10 and 12 for bits per component

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The DRM DSC helper has various bits_per_component values - not just 8.
But the DSC 1.1 block supports only 8, 10, and 12. Extend the guard
accordingly and add a comment noting this limitation.

Signed-off-by: Eugene Lepshy <fekz115@gmail.com>
Co-developed-by: Danila Tikhonov <danila@jiaxyga.com>
Signed-off-by: Danila Tikhonov <danila@jiaxyga.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/637831/
Link: https://lore.kernel.org/r/20250217222431.82522-4-danila@jiaxyga.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
This commit is contained in:
Eugene Lepshy 2025-02-18 01:24:30 +03:00 committed by Dmitry Baryshkov
parent d245ce5689
commit b0e71c2637
1 changed files with 15 additions and 3 deletions
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18
drivers/gpu/drm/msm/dsi/dsi_host.c
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@ -1759,8 +1759,20 @@ static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc
return -EINVAL;
}
if (dsc->bits_per_component != 8) {
DRM_DEV_ERROR(&msm_host->pdev->dev, "DSI does not support bits_per_component != 8 yet\n");
switch (dsc->bits_per_component) {
case 8:
case 10:
case 12:
/*
* Only 8, 10, and 12 bpc are supported for DSC 1.1 block.
* If additional bpc values need to be supported, update
* this quard with the appropriate DSC version verification.
*/
break;
default:
DRM_DEV_ERROR(&msm_host->pdev->dev,
"Unsupported bits_per_component value: %d\n",
dsc->bits_per_component);
return -EOPNOTSUPP;
}
@ -1771,7 +1783,7 @@ static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc
drm_dsc_set_const_params(dsc);
drm_dsc_set_rc_buf_thresh(dsc);
/* handle only bpp = bpc = 8, pre-SCR panels */
/* DPU supports only pre-SCR panels */
ret = drm_dsc_setup_rc_params(dsc, DRM_DSC_1_1_PRE_SCR);
if (ret) {
DRM_DEV_ERROR(&msm_host->pdev->dev, "could not find DSC RC parameters\n");