[media] cec: add cec_s_phys_addr_from_edid helper function
This function simplifies the integration of CEC in DRM drivers.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/media/cec/cec-adap.c b/drivers/media/cec/cec-adap.c
index fd6d9cc..61e39bb 100644
--- a/drivers/media/cec/cec-adap.c
+++ b/drivers/media/cec/cec-adap.c
@@ -28,6 +28,8 @@
#include <linux/string.h>
#include <linux/types.h>
+#include <drm/drm_edid.h>
+
#include "cec-priv.h"
static void cec_fill_msg_report_features(struct cec_adapter *adap,
@@ -1408,6 +1410,18 @@ void cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block)
}
EXPORT_SYMBOL_GPL(cec_s_phys_addr);
+void cec_s_phys_addr_from_edid(struct cec_adapter *adap,
+ const struct edid *edid)
+{
+ u16 pa = CEC_PHYS_ADDR_INVALID;
+
+ if (edid && edid->extensions)
+ pa = cec_get_edid_phys_addr((const u8 *)edid,
+ EDID_LENGTH * (edid->extensions + 1), NULL);
+ cec_s_phys_addr(adap, pa, false);
+}
+EXPORT_SYMBOL_GPL(cec_s_phys_addr_from_edid);
+
/*
* Called from either the ioctl or a driver to set the logical addresses.
*