From db492480b2b2228e9cb9ce85bef50d003c8f8c37 Mon Sep 17 00:00:00 2001 From: Krishna Manikandan Date: Wed, 10 Nov 2021 16:21:47 +0530 Subject: [PATCH] drm/msm: use compatible lists to find mdp node In the current implementation, substring comparison using device node name is used to find mdp node during driver probe. Use compatible string list instead of node name to get mdp node from the parent mdss node. Signed-off-by: Krishna Manikandan Reviewed-by: Stephen Boyd Changes in v2: - Use compatible lists instead of duplicate string check (Stephen Boyd) Changes in v3: - Use match tables to find the mdp node (Stephen Boyd) Changes in v4: - Drop EXPORT_SYMBOL (Dmitry Baryshkov) Link: https://lore.kernel.org/r/1636541507-5144-1-git-send-email-quic_mkrishn@quicinc.com Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 2 +- drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 2 +- drivers/gpu/drm/msm/msm_drv.c | 7 ++++--- drivers/gpu/drm/msm/msm_kms.h | 3 +++ 4 files changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index a15b264..6c457c4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -1285,7 +1285,7 @@ static const struct dev_pm_ops dpu_pm_ops = { pm_runtime_force_resume) }; -static const struct of_device_id dpu_dt_match[] = { +const struct of_device_id dpu_dt_match[] = { { .compatible = "qcom,sdm845-dpu", }, { .compatible = "qcom,sc7180-dpu", }, { .compatible = "qcom,sc7280-dpu", }, diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index ec02265..f78a6ee 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -1016,7 +1016,7 @@ static const struct dev_pm_ops mdp5_pm_ops = { SET_RUNTIME_PM_OPS(mdp5_runtime_suspend, mdp5_runtime_resume, NULL) }; -static const struct of_device_id mdp5_dt_match[] = { +const struct of_device_id mdp5_dt_match[] = { { .compatible = "qcom,mdp5", }, /* to support downstream DT files */ { .compatible = "qcom,mdss_mdp", }, diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 91cc451..f81cf70 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -1286,9 +1286,10 @@ static int add_components_mdp(struct device *mdp_dev, return 0; } -static int compare_name_mdp(struct device *dev, void *data) +static int find_mdp_node(struct device *dev, void *data) { - return (strstr(dev_name(dev), "mdp") != NULL); + return of_match_node(dpu_dt_match, dev->of_node) || + of_match_node(mdp5_dt_match, dev->of_node); } static int add_display_components(struct platform_device *pdev, @@ -1313,7 +1314,7 @@ static int add_display_components(struct platform_device *pdev, return ret; } - mdp_dev = device_find_child(dev, NULL, compare_name_mdp); + mdp_dev = device_find_child(dev, NULL, find_mdp_node); if (!mdp_dev) { DRM_DEV_ERROR(dev, "failed to find MDSS MDP node\n"); of_platform_depopulate(dev); diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 6a42b81..8b132c8 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -198,6 +198,9 @@ struct msm_kms *mdp4_kms_init(struct drm_device *dev); struct msm_kms *mdp5_kms_init(struct drm_device *dev); struct msm_kms *dpu_kms_init(struct drm_device *dev); +extern const struct of_device_id dpu_dt_match[]; +extern const struct of_device_id mdp5_dt_match[]; + struct msm_mdss_funcs { int (*enable)(struct msm_mdss *mdss); int (*disable)(struct msm_mdss *mdss); -- 2.7.4