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video: edid: guard standard timings EDID expansion behind kconfig

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Since EDID only indicates supported standard timings, a large table with
detailed timing information is necessary, consuming significant space. To
mitigate this, the table is made configurable via kconfig, allowing it to
be excluded when not needed.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
This commit is contained in:
Svyatoslav Ryhel 2025-03-13 09:59:12 +02:00
parent 93930dee12
commit 37a37ad608
2 changed files with 12 additions and 0 deletions
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6
common/edid.c
View file

@ -16,6 +16,7 @@
#include <linux/ctype.h>
#include <linux/string.h>
#if CONFIG_IS_ENABLED(I2C_EDID_STANDARD)
#define TIMING(c, ha, hfp, hbp, hsl, va, vfp, vbp, vsl, f) \
.pixelclock = { (c), (c), (c) }, \
.hactive = { (ha), (ha), (ha) }, \
@ -206,6 +207,7 @@ static const struct display_timing dmt_timings[] = {
{ TIMING(556188000, 4096, 8, 32, 40, 2160, 48, 8, 6,
DISPLAY_FLAGS_HSYNC_HIGH | DISPLAY_FLAGS_VSYNC_LOW) },
};
#endif
int edid_check_info(struct edid1_info *edid_info)
{
@ -417,6 +419,7 @@ static bool edid_get_standard_timing(struct edid1_info *edid, int i, unsigned in
return false;
}
#if CONFIG_IS_ENABLED(I2C_EDID_STANDARD)
static bool edid_find_valid_standard_timing(struct edid1_info *buf,
struct display_timing *timing,
bool (*mode_valid)(void *priv,
@ -446,6 +449,7 @@ static bool edid_find_valid_standard_timing(struct edid1_info *buf,
return found;
}
#endif
int edid_get_timing_validate(u8 *buf, int buf_size,
struct display_timing *timing,
@ -493,10 +497,12 @@ int edid_get_timing_validate(u8 *buf, int buf_size,
}
}
#if CONFIG_IS_ENABLED(I2C_EDID_STANDARD)
/* Look for timing in Standard Timings */
if (!found)
found = edid_find_valid_standard_timing(edid, timing, mode_valid,
mode_valid_priv);
#endif
if (!found)
return -EINVAL;

6
drivers/video/Kconfig
View file

@ -721,6 +721,12 @@ config I2C_EDID
help
This enables library for accessing EDID data from an LCD panel.
config I2C_EDID_STANDARD
bool "Enable standard timings EDID library expansion"
depends on I2C_EDID
help
This enables standard timings expansion for EDID data from an LCD panel.
config DISPLAY
bool "Enable Display support"
depends on DM