[RFC v3 1/4] drm: Add support to find drm_panel by name

Shobhit Kumar
2015-01-21T11:18:10Z

For scenarios where OF is not available, we can use panel identification by
name.

Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
---
drivers/gpu/drm/drm_panel.c | 18 ++++++++++++++++++
include/drm/drm_panel.h | 3 +++
2 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c
index 2ef988e..e1cb8cf 100644
--- a/drivers/gpu/drm/drm_panel.c
+++ b/drivers/gpu/drm/drm_panel.c
@@ -95,6 +95,24 @@ struct drm_panel *of_drm_find_panel(struct device_node *np)
EXPORT_SYMBOL(of_drm_find_panel);
#endif

+struct drm_panel *drm_find_panel_by_name(const char *name)
+{
+ struct drm_panel *panel;
+
+ mutex_lock(&panel_lock);
+
+ list_for_each_entry(panel, &panel_list, list) {
+ if (strcmp(panel->name, name) == 0) {
+ mutex_unlock(&panel_lock);
+ return panel;
+ }
+ }
+
+ mutex_unlock(&panel_lock);
+ return NULL;
+}
+EXPORT_SYMBOL(drm_find_panel_by_name);
+
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("DRM panel infrastructure");
MODULE_LICENSE("GPL and additional rights");
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 1fbcc96..1ef9ff3 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -74,6 +74,7 @@ struct drm_panel {
struct drm_device *drm;
struct drm_connector *connector;
struct device *dev;
+ char name[NAME_MAX];

const struct drm_panel_funcs *funcs;

@@ -137,4 +138,6 @@ static inline struct drm_panel *of_drm_find_panel(struct device_node *np)
}
#endif

+struct drm_panel *drm_find_panel_by_name(const char *name);
+
#endif