drm/msm/dpu: do not enable color-management if DSPPs are not available

We can not support color management without DSPP blocks being provided
in the HW catalog. Do not enable color management for CRTCs if num_dspps
is 0.

Fixes: 4259ff7ae509 ("drm/msm/dpu: add support for pcc color block in dpu driver")
Reported-by: Yongqin Liu <yongqin.liu@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>
Tested-by: Yongqin Liu <yongqin.liu@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/542141/
Link: https://lore.kernel.org/r/20230612182534.3345805-1-dmitry.baryshkov@linaro.org

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 6e684a7..1edf2b6 100644 (file)
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -1463,6 +1463,8 @@ static const struct drm_crtc_helper_funcs dpu_crtc_helper_funcs = {
 struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane,
                                struct drm_plane *cursor)
 {
+       struct msm_drm_private *priv = dev->dev_private;
+       struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms);
        struct drm_crtc *crtc = NULL;
        struct dpu_crtc *dpu_crtc = NULL;
        int i, ret;
@@ -1494,7 +1496,8 @@ struct drm_crtc *dpu_crtc_init(struct drm_device *dev, struct drm_plane *plane,
 
        drm_crtc_helper_add(crtc, &dpu_crtc_helper_funcs);
 
-       drm_crtc_enable_color_mgmt(crtc, 0, true, 0);
+       if (dpu_kms->catalog->dspp_count)
+               drm_crtc_enable_color_mgmt(crtc, 0, true, 0);
 
        /* save user friendly CRTC name for later */
        snprintf(dpu_crtc->name, DPU_CRTC_NAME_SIZE, "crtc%u", crtc->base.id);