Allow board's device tree to specify the vsync source (aka TE source).
If the property is omitted, the display controller driver will use the
default setting.
Signed-off-by: Dmitry Baryshkov
---
drivers/gpu/drm/msm/dsi/dsi.h | 1 +
drivers/gpu/drm/msm/dsi/dsi_host.c| 11 +++
drivers/gpu/drm/msm/dsi/dsi_manager.c | 5 +
drivers/gpu/drm/msm/msm_drv.h | 6 ++
4 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index afc290408ba4..87496db203d6 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -37,6 +37,7 @@ struct msm_dsi {
struct mipi_dsi_host *host;
struct msm_dsi_phy *phy;
+ const char *te_source;
struct drm_bridge *next_bridge;
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c
b/drivers/gpu/drm/msm/dsi/dsi_host.c
index c4d72562c95a..c26ad0fed54d 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1786,9 +1786,11 @@ static int dsi_populate_dsc_params(struct msm_dsi_host
*msm_host, struct drm_dsc
static int dsi_host_parse_dt(struct msm_dsi_host *msm_host)
{
+ struct msm_dsi *msm_dsi = platform_get_drvdata(msm_host->pdev);
struct device *dev = &msm_host->pdev->dev;
struct device_node *np = dev->of_node;
struct device_node *endpoint;
+ const char *te_source;
int ret = 0;
/*
@@ -1811,6 +1813,15 @@ static int dsi_host_parse_dt(struct msm_dsi_host
*msm_host)
goto err;
}
+ ret = of_property_read_string(endpoint, "qcom,te-source", &te_source);
+ if (ret && ret != -EINVAL) {
+ DRM_DEV_ERROR(dev, "%s: invalid TE source configuration %d\n",
+ __func__, ret);
+ goto err;
+ }
+ if (!ret)
+ msm_dsi->te_source = devm_kstrdup(dev, te_source, GFP_KERNEL);
+
if (of_property_read_bool(np, "syscon-sfpb")) {
msm_host->sfpb = syscon_regmap_lookup_by_phandle(np,
"syscon-sfpb");
diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c
b/drivers/gpu/drm/msm/dsi/dsi_manager.c
index 5b3f3068fd92..a210b7c9e5ca 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_manager.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c
@@ -603,3 +603,8 @@ bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi)
{
return IS_MASTER_DSI_LINK(msm_dsi->id);
}
+
+const char *msm_dsi_get_te_source(struct msm_dsi *msm_dsi)
+{
+ return msm_dsi->te_source;
+}
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 912ebaa5df84..afd98dffea99 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -330,6 +330,7 @@ bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi);
bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi);
bool msm_dsi_wide_bus_enabled(struct msm_dsi *msm_dsi);
struct drm_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi);
+const char *msm_dsi_get_te_source(struct msm_dsi *msm_dsi);
#else
static inline void __init msm_dsi_register(void)
{
@@ -367,6 +368,11 @@ static inline struct drm_dsc_config
*msm_dsi_get_dsc_config(struct msm_dsi *msm_
{
return NULL;
}
+
+static inline const char *msm_dsi_get_te_source(struct msm_dsi *msm_dsi)
+{
+ return NULL;
+}
#endif
#ifdef CONFIG_DRM_MSM_DP
--
2.39.2
