CEC needs the source physical address. Parsing it is trivial with the
existing EDID CEA DB infrastructure.
Default to CEC_PHYS_ADDR_INVALID (0xffff) instead of 0 to cater for
easier CEC usage.
Cc: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Cc: linux-media@xxxxxxxxxxxxxxx
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 5 +++++
include/drm/drm_connector.h | 8 ++++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 1dbb15439468..39dd3f694544 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -29,6 +29,7 @@
*/
#include <linux/bitfield.h>
+#include <linux/cec.h>
#include <linux/hdmi.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
@@ -6192,6 +6193,8 @@ drm_parse_hdmi_vsdb_video(struct drm_connector *connector, const u8 *db)
info->is_hdmi = true;
+ info->source_physical_address = (db[4] << 8) | db[5];
+
if (len >= 6)
info->dvi_dual = db[6] & 1;
if (len >= 7)
@@ -6470,6 +6473,8 @@ static void drm_reset_display_info(struct drm_connector *connector)
info->vics_len = 0;
info->quirks = 0;
+
+ info->source_physical_address = CEC_PHYS_ADDR_INVALID;
}
static void update_displayid_info(struct drm_connector *connector,
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index d300fde6c1a4..40a5e7acf2fa 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -816,6 +816,14 @@ struct drm_display_info {
* @quirks: EDID based quirks. Internal to EDID parsing.
*/
u32 quirks;
+
+ /**
+ * @source_physical_address: Source Physical Address from HDMI
+ * Vendor-Specific Data Block, for CEC usage.
+ *
+ * Defaults to CEC_PHYS_ADDR_INVALID (0xffff).
+ */
+ u16 source_physical_address;
};
int drm_display_info_set_bus_formats(struct drm_display_info *info,
--
2.39.2
