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

6
drivers/video/Kconfig
View File

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