From a4781dfa5770e927b7c7f327d22d7707073c0ae3 Mon Sep 17 00:00:00 2001
From: Krishna Manikandan <quic_mkrishn@quicinc.com>
Date: Wed, 10 Nov 2021 16:21:47 +0530
Subject: drm/msm: use compatible lists to find mdp node
Git-commit: db492480b2b2228e9cb9ce85bef50d003c8f8c37
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
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 <quic_mkrishn@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
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 <robdclark@chromium.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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 a15b26428280..6c457c419412 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 ec022657b9ad..f78a6eec0ddd 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 91cc4512bafb..f81cf7097494 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 6a42b819abc4..8b132c8b1513 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);
--
2.38.1