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authorEugene Lepshy <fekz115@gmail.com>2025-02-18 01:24:30 +0300
committerDmitry Baryshkov <dmitry.baryshkov@linaro.org>2025-02-26 12:15:49 +0200
commitb0e71c2637d1b99ff7093582cd3c9f0960619878 (patch)
treef070f32b15096c6821f41d6a8f8486b931463de2 /drivers/gpu/drm/msm/dsi/dsi_host.c
parentd245ce568929e30f650e260631f7ad14970d7c2c (diff)
drm/msm/dsi: Allow values of 10 and 12 for bits per component
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>
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_host.c')
-rw-r--r--drivers/gpu/drm/msm/dsi/dsi_host.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index b6ae9717a5d3..5b245133a1d1 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -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");