diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-06-13 20:05:09 +0300 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-06-24 19:41:05 +0300 |
| commit | 958d8d99ccb31ed5db02644bd138dbf70ace2051 (patch) | |
| tree | 82e72fb2553d56b44e014f886c96a9ce56019915 | |
| parent | 47cda61fdc6497405a73f7845032649c03f12eb3 (diff) | |
| download | linux-958d8d99ccb31ed5db02644bd138dbf70ace2051.tar.gz linux-958d8d99ccb31ed5db02644bd138dbf70ace2051.tar.bz2 linux-958d8d99ccb31ed5db02644bd138dbf70ace2051.zip | |
drm/msm/dsi: parse vsync source from device tree
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.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
[DB: fixed clearing of return value if there is no TE property]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/598740/
Link: https://lore.kernel.org/r/20240613-dpu-handle-te-signal-v2-6-67a0116b5366@linaro.org
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi_host.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi_manager.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.h | 6 |
4 files changed, 24 insertions, 0 deletions
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 80fa91289381..185d7de0bf37 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1794,9 +1794,11 @@ 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; /* @@ -1819,6 +1821,16 @@ 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); + ret = 0; + 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 e256d72adddd..be016d7b4ef1 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -335,6 +335,7 @@ 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) { @@ -372,6 +373,11 @@ 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 |