drm_find_cea_extension() always look for a top level CEA block. Pass
ext_index from caller then this function to search next available
CEA ext block from a specific EDID block pointer.
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Cc: Ville Syrjala <ville.syrj...@linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nauti...@intel.com>
Signed-off-by: Lee Shawn C <shawn.c....@intel.com>
---
drivers/gpu/drm/drm_edid.c | 42 ++++++++++++++++++--------------------
1 file changed, 20 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index a504542238ed..375e70d9de86 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3353,16 +3353,14 @@ const u8 *drm_find_edid_extension(const struct edid
*edid,
return edid_ext;
}
-static const u8 *drm_find_cea_extension(const struct edid *edid)
+static const u8 *drm_find_cea_extension(const struct edid *edid, int
*ext_index)
{
const struct displayid_block *block;
struct displayid_iter iter;
const u8 *cea;
- int ext_index = 0;
- /* Look for a top level CEA extension block */
- /* FIXME: make callers iterate through multiple CEA ext blocks? */
- cea = drm_find_edid_extension(edid, CEA_EXT, &ext_index);
+ /* Look for a CEA extension block from ext_index */
+ cea = drm_find_edid_extension(edid, CEA_EXT, ext_index);
if (cea)
return cea;
@@ -3643,10 +3641,10 @@ add_alternate_cea_modes(struct drm_connector
*connector, struct edid *edid)
struct drm_device *dev = connector->dev;
struct drm_display_mode *mode, *tmp;
LIST_HEAD(list);
- int modes = 0;
+ int modes = 0, ext_index = 0;
/* Don't add CEA modes if the CEA extension block is missing */
- if (!drm_find_cea_extension(edid))
+ if (!drm_find_cea_extension(edid, &ext_index))
return 0;
/*
@@ -4321,11 +4319,11 @@ static void drm_parse_y420cmdb_bitmap(struct
drm_connector *connector,
static int
add_cea_modes(struct drm_connector *connector, struct edid *edid)
{
- const u8 *cea = drm_find_cea_extension(edid);
- const u8 *db, *hdmi = NULL, *video = NULL;
+ const u8 *cea, *db, *hdmi = NULL, *video = NULL;
u8 dbl, hdmi_len, video_len = 0;
- int modes = 0;
+ int modes = 0, ext_index = 0;
+ cea = drm_find_cea_extension(edid, &ext_index);
if (cea && cea_revision(cea) >= 3) {
int i, start, end;
@@ -4562,7 +4560,7 @@ static void drm_edid_to_eld(struct drm_connector
*connector, struct edid *edid)
uint8_t *eld = connector->eld;
const u8 *cea;
const u8 *db;
- int total_sad_count = 0;
+ int total_sad_count = 0, ext_index = 0;
int mnl;
int dbl;
@@ -4571,7 +4569,7 @@ static void drm_edid_to_eld(struct drm_connector
*connector, struct edid *edid)
if (!edid)
return;
- cea = drm_find_cea_extension(edid);
+ cea = drm_find_cea_extension(edid, &ext_index);
if (!cea) {
DRM_DEBUG_KMS("ELD: no CEA Extension found\n");
return;
@@ -4655,11 +4653,11 @@ static void drm_edid_to_eld(struct drm_connector
*connector, struct edid *edid)
*/
int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads)
{
- int count = 0;
+ int count = 0, ext_index = 0;
int i, start, end, dbl;
const u8 *cea;
- cea = drm_find_cea_extension(edid);
+ cea = drm_find_cea_extension(edid, &ext_index);
if (!cea) {
DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
return 0;
@@ -4717,11 +4715,11 @@ EXPORT_SYMBOL(drm_edid_to_sad);
*/
int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb)
{
- int count = 0;
+ int count = 0, ext_index = 0;
int i, start, end, dbl;
const u8 *cea;
- cea = drm_find_cea_extension(edid);
+ cea = drm_find_cea_extension(edid, &ext_index);
if (!cea) {
DRM_DEBUG_KMS("SAD: no CEA Extension found\n");
return 0;
@@ -4814,9 +4812,9 @@ bool drm_detect_hdmi_monitor(struct edid *edid)
{
const u8 *edid_ext;
int i;
- int start_offset, end_offset;
+ int start_offset, end_offset, ext_index = 0;
- edid_ext = drm_find_cea_extension(edid);
+ edid_ext = drm_find_cea_extension(edid, &ext_index);
if (!edid_ext)
return false;
@@ -4853,9 +4851,9 @@ bool drm_detect_monitor_audio(struct edid *edid)
const u8 *edid_ext;
int i, j;
bool has_audio = false;
- int start_offset, end_offset;
+ int start_offset, end_offset, ext_index = 0;
- edid_ext = drm_find_cea_extension(edid);
+ edid_ext = drm_find_cea_extension(edid, &ext_index);
if (!edid_ext)
goto end;
@@ -5177,9 +5175,9 @@ static void drm_parse_cea_ext(struct drm_connector
*connector,
{
struct drm_display_info *info = &connector->display_info;
const u8 *edid_ext;
- int i, start, end;
+ int i, start, end, ext_index = 0;
- edid_ext = drm_find_cea_extension(edid);
+ edid_ext = drm_find_cea_extension(edid, &ext_index);
if (!edid_ext)
return;
--
2.17.1
