[PATCH 1/3] media: rc: set timeout to smallest value required by enabled protocols
Sean Young
sean at mess.org
Sat Mar 24 07:50:43 PDT 2018
The longer the IR timeout, the longer we wait until delivering each
scancode. By reducing this timeout, we reduce the time it take for the
last scancode to be delivered.
Note that the lirc daemon disables all protocols, in case we revert back
to the default value.
Signed-off-by: Sean Young <sean at mess.org>
---
drivers/media/rc/ir-imon-decoder.c | 1 +
drivers/media/rc/ir-jvc-decoder.c | 1 +
drivers/media/rc/ir-mce_kbd-decoder.c | 1 +
drivers/media/rc/ir-nec-decoder.c | 1 +
drivers/media/rc/ir-rc5-decoder.c | 1 +
drivers/media/rc/ir-rc6-decoder.c | 1 +
drivers/media/rc/ir-sanyo-decoder.c | 1 +
drivers/media/rc/ir-sharp-decoder.c | 1 +
drivers/media/rc/ir-sony-decoder.c | 1 +
drivers/media/rc/ir-xmp-decoder.c | 1 +
drivers/media/rc/rc-core-priv.h | 1 +
drivers/media/rc/rc-ir-raw.c | 31 ++++++++++++++++++++++++++++++-
drivers/media/rc/rc-main.c | 12 ++++++------
13 files changed, 47 insertions(+), 7 deletions(-)
diff --git a/drivers/media/rc/ir-imon-decoder.c b/drivers/media/rc/ir-imon-decoder.c
index a1ff06a26542..9024b359e5ee 100644
--- a/drivers/media/rc/ir-imon-decoder.c
+++ b/drivers/media/rc/ir-imon-decoder.c
@@ -170,6 +170,7 @@ static struct ir_raw_handler imon_handler = {
.decode = ir_imon_decode,
.encode = ir_imon_encode,
.carrier = 38000,
+ .max_space = IMON_UNIT * IMON_BITS * 2,
};
static int __init ir_imon_decode_init(void)
diff --git a/drivers/media/rc/ir-jvc-decoder.c b/drivers/media/rc/ir-jvc-decoder.c
index 8cb68ae43282..190c690b14f8 100644
--- a/drivers/media/rc/ir-jvc-decoder.c
+++ b/drivers/media/rc/ir-jvc-decoder.c
@@ -213,6 +213,7 @@ static struct ir_raw_handler jvc_handler = {
.decode = ir_jvc_decode,
.encode = ir_jvc_encode,
.carrier = 38000,
+ .max_space = JVC_TRAILER_SPACE,
};
static int __init ir_jvc_decode_init(void)
diff --git a/drivers/media/rc/ir-mce_kbd-decoder.c b/drivers/media/rc/ir-mce_kbd-decoder.c
index c110984ca671..ae4b980c4a16 100644
--- a/drivers/media/rc/ir-mce_kbd-decoder.c
+++ b/drivers/media/rc/ir-mce_kbd-decoder.c
@@ -475,6 +475,7 @@ static struct ir_raw_handler mce_kbd_handler = {
.raw_register = ir_mce_kbd_register,
.raw_unregister = ir_mce_kbd_unregister,
.carrier = 36000,
+ .max_space = MCIR2_MAX_LEN,
};
static int __init ir_mce_kbd_decode_init(void)
diff --git a/drivers/media/rc/ir-nec-decoder.c b/drivers/media/rc/ir-nec-decoder.c
index 21647b809e6f..fac12f867a81 100644
--- a/drivers/media/rc/ir-nec-decoder.c
+++ b/drivers/media/rc/ir-nec-decoder.c
@@ -253,6 +253,7 @@ static struct ir_raw_handler nec_handler = {
.decode = ir_nec_decode,
.encode = ir_nec_encode,
.carrier = 38000,
+ .max_space = NEC_TRAILER_SPACE,
};
static int __init ir_nec_decode_init(void)
diff --git a/drivers/media/rc/ir-rc5-decoder.c b/drivers/media/rc/ir-rc5-decoder.c
index 74d3b859c3a2..711068c8de90 100644
--- a/drivers/media/rc/ir-rc5-decoder.c
+++ b/drivers/media/rc/ir-rc5-decoder.c
@@ -274,6 +274,7 @@ static struct ir_raw_handler rc5_handler = {
.decode = ir_rc5_decode,
.encode = ir_rc5_encode,
.carrier = 36000,
+ .max_space = RC5_TRAILER,
};
static int __init ir_rc5_decode_init(void)
diff --git a/drivers/media/rc/ir-rc6-decoder.c b/drivers/media/rc/ir-rc6-decoder.c
index 8314da32453f..9cc4820878c7 100644
--- a/drivers/media/rc/ir-rc6-decoder.c
+++ b/drivers/media/rc/ir-rc6-decoder.c
@@ -394,6 +394,7 @@ static struct ir_raw_handler rc6_handler = {
.decode = ir_rc6_decode,
.encode = ir_rc6_encode,
.carrier = 36000,
+ .max_space = RC6_SUFFIX_SPACE,
};
static int __init ir_rc6_decode_init(void)
diff --git a/drivers/media/rc/ir-sanyo-decoder.c b/drivers/media/rc/ir-sanyo-decoder.c
index 4efe6db5376a..e72787b446c9 100644
--- a/drivers/media/rc/ir-sanyo-decoder.c
+++ b/drivers/media/rc/ir-sanyo-decoder.c
@@ -210,6 +210,7 @@ static struct ir_raw_handler sanyo_handler = {
.decode = ir_sanyo_decode,
.encode = ir_sanyo_encode,
.carrier = 38000,
+ .max_space = SANYO_TRAILER_SPACE,
};
static int __init ir_sanyo_decode_init(void)
diff --git a/drivers/media/rc/ir-sharp-decoder.c b/drivers/media/rc/ir-sharp-decoder.c
index 6a38c50566a4..ccbd4c12d1d7 100644
--- a/drivers/media/rc/ir-sharp-decoder.c
+++ b/drivers/media/rc/ir-sharp-decoder.c
@@ -226,6 +226,7 @@ static struct ir_raw_handler sharp_handler = {
.decode = ir_sharp_decode,
.encode = ir_sharp_encode,
.carrier = 38000,
+ .max_space = SHARP_TRAILER_SPACE,
};
static int __init ir_sharp_decode_init(void)
diff --git a/drivers/media/rc/ir-sony-decoder.c b/drivers/media/rc/ir-sony-decoder.c
index 6764ec9de646..598bae8d8ffb 100644
--- a/drivers/media/rc/ir-sony-decoder.c
+++ b/drivers/media/rc/ir-sony-decoder.c
@@ -224,6 +224,7 @@ static struct ir_raw_handler sony_handler = {
.decode = ir_sony_decode,
.encode = ir_sony_encode,
.carrier = 40000,
+ .max_space = SONY_TRAILER_SPACE,
};
static int __init ir_sony_decode_init(void)
diff --git a/drivers/media/rc/ir-xmp-decoder.c b/drivers/media/rc/ir-xmp-decoder.c
index 58b47af1a763..e005a75a86fe 100644
--- a/drivers/media/rc/ir-xmp-decoder.c
+++ b/drivers/media/rc/ir-xmp-decoder.c
@@ -199,6 +199,7 @@ static int ir_xmp_decode(struct rc_dev *dev, struct ir_raw_event ev)
static struct ir_raw_handler xmp_handler = {
.protocols = RC_PROTO_BIT_XMP,
.decode = ir_xmp_decode,
+ .max_space = XMP_TRAILER_SPACE,
};
static int __init ir_xmp_decode_init(void)
diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
index e0e6a17460f6..8c38941295b8 100644
--- a/drivers/media/rc/rc-core-priv.h
+++ b/drivers/media/rc/rc-core-priv.h
@@ -37,6 +37,7 @@ struct ir_raw_handler {
int (*encode)(enum rc_proto protocol, u32 scancode,
struct ir_raw_event *events, unsigned int max);
u32 carrier;
+ u32 max_space;
/* These two should only be used by the mce kbd decoder */
int (*raw_register)(struct rc_dev *dev);
diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c
index 374f83105a23..f4e1fd95f839 100644
--- a/drivers/media/rc/rc-ir-raw.c
+++ b/drivers/media/rc/rc-ir-raw.c
@@ -233,7 +233,36 @@ ir_raw_get_allowed_protocols(void)
static int change_protocol(struct rc_dev *dev, u64 *rc_proto)
{
- /* the caller will update dev->enabled_protocols */
+ struct ir_raw_handler *handler;
+ u32 timeout = 0;
+
+ if (!dev->max_timeout)
+ return 0;
+
+ mutex_lock(&ir_raw_handler_lock);
+ list_for_each_entry(handler, &ir_raw_handler_list, list) {
+ if (handler->protocols & *rc_proto) {
+ if (timeout < handler->max_space)
+ timeout = handler->max_space;
+ }
+ }
+ mutex_unlock(&ir_raw_handler_lock);
+
+ if (timeout == 0)
+ timeout = IR_DEFAULT_TIMEOUT;
+ else
+ timeout += MS_TO_NS(10);
+
+ if (timeout < dev->min_timeout)
+ timeout = dev->min_timeout;
+ else if (timeout > dev->max_timeout)
+ timeout = dev->max_timeout;
+
+ if (dev->s_timeout)
+ dev->s_timeout(dev, timeout);
+ else
+ dev->timeout = timeout;
+
return 0;
}
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index b67be33bd62f..6a720e9c7aa8 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -1241,6 +1241,9 @@ static ssize_t store_protocols(struct device *device,
if (rc < 0)
goto out;
+ if (dev->driver_type == RC_DRIVER_IR_RAW)
+ ir_raw_load_modules(&new_protocols);
+
rc = dev->change_protocol(dev, &new_protocols);
if (rc < 0) {
dev_dbg(&dev->dev, "Error setting protocols to 0x%llx\n",
@@ -1248,9 +1251,6 @@ static ssize_t store_protocols(struct device *device,
goto out;
}
- if (dev->driver_type == RC_DRIVER_IR_RAW)
- ir_raw_load_modules(&new_protocols);
-
if (new_protocols != old_protocols) {
*current_protocols = new_protocols;
dev_dbg(&dev->dev, "Protocols changed to 0x%llx\n",
@@ -1735,6 +1735,9 @@ static int rc_prepare_rx_device(struct rc_dev *dev)
if (dev->driver_type == RC_DRIVER_SCANCODE && !dev->change_protocol)
dev->enabled_protocols = dev->allowed_protocols;
+ if (dev->driver_type == RC_DRIVER_IR_RAW)
+ ir_raw_load_modules(&rc_proto);
+
if (dev->change_protocol) {
rc = dev->change_protocol(dev, &rc_proto);
if (rc < 0)
@@ -1742,9 +1745,6 @@ static int rc_prepare_rx_device(struct rc_dev *dev)
dev->enabled_protocols = rc_proto;
}
- if (dev->driver_type == RC_DRIVER_IR_RAW)
- ir_raw_load_modules(&rc_proto);
-
set_bit(EV_KEY, dev->input_dev->evbit);
set_bit(EV_REP, dev->input_dev->evbit);
set_bit(EV_MSC, dev->input_dev->evbit);
--
2.14.3
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