As part of the command line parsing rework coming in the next patches,
we'll need to lookup drm_connector_tv_mode values by their name, already
defined in drm_tv_mode_enum_list.
In order to avoid any code duplication, let's do a function that will
perform a lookup of a TV mode name and return its value.
Reviewed-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
drivers/gpu/drm/drm_connector.c | 24 ++++++++++++++++++++++++
include/drm/drm_connector.h | 2 ++
2 files changed, 26 insertions(+)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 820f4c730b38..30611c616435 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -991,6 +991,30 @@ static const struct drm_prop_enum_list drm_tv_mode_enum_list[] = {
};
DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list)
+/**
+ * drm_get_tv_mode_from_name - Translates a TV mode name into its enum value
+ * @name: TV Mode name we want to convert
+ * @len: Length of @name
+ *
+ * Translates @name into an enum drm_connector_tv_mode.
+ *
+ * Returns: the enum value on success, a negative errno otherwise.
+ */
+int drm_get_tv_mode_from_name(const char *name, size_t len)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(drm_tv_mode_enum_list); i++) {
+ const struct drm_prop_enum_list *item = &drm_tv_mode_enum_list[i];
+
+ if (strlen(item->name) == len && !strncmp(item->name, name, len))
+ return item->type;
+ }
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(drm_get_tv_mode_from_name);
+
static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 5c5e67de2296..276f5cb0f351 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1864,6 +1864,8 @@ const char *drm_get_dp_subconnector_name(int val);
const char *drm_get_content_protection_name(int val);
const char *drm_get_hdcp_content_type_name(int val);
+int drm_get_tv_mode_from_name(const char *name, size_t len);
+
int drm_mode_create_dvi_i_properties(struct drm_device *dev);
void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector);
--
b4 0.11.0-dev-99e3a
