On Thu Feb 5 09:48:52 2026 +0800, LiPeng Huang wrote:
> sensor:increase IR_MAX_DURATION to 1000ms
> to fix long IR remote timeouts Certain infrared remotes
> (e.g., brand-specific smart home remotes, custom consumer electronics)
> send extended code sequences that exceed the default 500ms
> IR_MAX_DURATION threshold. This causes the kernel's raw
> IR driver to discard incomplete code, resulting in unrecognized commands.
>
> Increase IR_MAX_DURATION to 1000ms:
> - Aligns with common extended IR protocol specs
> (most long sequences use 700-900ms)
> - No impact on standard remotes
> (all mainstream IR codes are <500ms)
> - Validated on vivo X200 and vivo X300,
> resolves timeout issues without regressions
>
> Signed-off-by: LiPeng Huang <[email protected]>
> Signed-off-by: Sean Young <[email protected]>
> Signed-off-by: Hans Verkuil <[email protected]>
Patch committed.
Thanks,
Hans Verkuil
drivers/media/rc/gpio-ir-tx.c | 4 ++--
include/media/rc-core.h | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/drivers/media/rc/gpio-ir-tx.c b/drivers/media/rc/gpio-ir-tx.c
index e185ead40464..d15fb17fa0fa 100644
--- a/drivers/media/rc/gpio-ir-tx.c
+++ b/drivers/media/rc/gpio-ir-tx.c
@@ -51,7 +51,7 @@ static int gpio_ir_tx_set_carrier(struct rc_dev *dev, u32
carrier)
static void delay_until(ktime_t until)
{
/*
- * delta should never exceed 0.5 seconds (IR_MAX_DURATION) and on
+ * delta should never exceed 1 second (IR_MAX_DURATION) and on
* m68k ndelay(s64) does not compile; so use s32 rather than s64.
*/
s32 delta;
@@ -95,7 +95,7 @@ static void gpio_ir_tx_modulated(struct gpio_ir *gpio_ir,
uint *txbuf,
{
ktime_t edge;
/*
- * delta should never exceed 0.5 seconds (IR_MAX_DURATION) and on
+ * delta should never exceed 1 second (IR_MAX_DURATION) and on
* m68k ndelay(s64) does not compile; so use s32 rather than s64.
*/
s32 delta;
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 7c964b5ad792..d37fffc5dc3c 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -301,7 +301,7 @@ struct ir_raw_event {
#define US_TO_NS(usec) ((usec) * 1000)
#define MS_TO_US(msec) ((msec) * 1000)
-#define IR_MAX_DURATION MS_TO_US(500)
+#define IR_MAX_DURATION MS_TO_US(1000)
#define IR_DEFAULT_TIMEOUT MS_TO_US(125)
#define IR_MAX_TIMEOUT LIRC_VALUE_MASK
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