projects
/
platform
/
adaptation
/
renesas_rcar
/
renesas_kernel.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
drm/edid: Make the header fixup threshold tunable
[platform/adaptation/renesas_rcar/renesas_kernel.git]
/
drivers
/
gpu
/
drm
/
drm_edid.c
diff --git
a/drivers/gpu/drm/drm_edid.c
b/drivers/gpu/drm/drm_edid.c
index
c3b5139
..
eb92fe2
100644
(file)
--- a/
drivers/gpu/drm/drm_edid.c
+++ b/
drivers/gpu/drm/drm_edid.c
@@
-30,7
+30,7
@@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/i2c.h>
-#include <linux/
export
.h>
+#include <linux/
module
.h>
#include "drmP.h"
#include "drm_edid.h"
#include "drm_edid_modes.h"
#include "drmP.h"
#include "drm_edid.h"
#include "drm_edid_modes.h"
@@
-149,6
+149,10
@@
int drm_edid_header_is_valid(const u8 *raw_edid)
}
EXPORT_SYMBOL(drm_edid_header_is_valid);
}
EXPORT_SYMBOL(drm_edid_header_is_valid);
+static int edid_fixup __read_mostly = 6;
+module_param_named(edid_fixup, edid_fixup, int, 0400);
+MODULE_PARM_DESC(edid_fixup,
+ "Minimum number of valid EDID header bytes (0-8, default 6)");
/*
* Sanity check the EDID block (base or extension). Return 0 if the block
/*
* Sanity check the EDID block (base or extension). Return 0 if the block
@@
-160,10
+164,13
@@
bool drm_edid_block_valid(u8 *raw_edid, int block)
u8 csum = 0;
struct edid *edid = (struct edid *)raw_edid;
u8 csum = 0;
struct edid *edid = (struct edid *)raw_edid;
+ if (edid_fixup > 8 || edid_fixup < 0)
+ edid_fixup = 6;
+
if (block == 0) {
int score = drm_edid_header_is_valid(raw_edid);
if (score == 8) ;
if (block == 0) {
int score = drm_edid_header_is_valid(raw_edid);
if (score == 8) ;
- else if (score >=
6
) {
+ else if (score >=
edid_fixup
) {
DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
memcpy(raw_edid, edid_header, sizeof(edid_header));
} else {
DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
memcpy(raw_edid, edid_header, sizeof(edid_header));
} else {