diff options
| author | Sean Young <sean@mess.org> | 2018-03-08 15:42:44 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-21 18:54:51 +0100 |
| commit | 8d7a77ce56cdb5f50b83ca0c59a31362e1a5eeb4 (patch) | |
| tree | 704d04613b6aedc97be22b042cac5ddc91aa058e /drivers/media/rc | |
| parent | media: cpia2_usb: drop bogus interface-release call (diff) | |
| download | linux-8d7a77ce56cdb5f50b83ca0c59a31362e1a5eeb4.tar.xz linux-8d7a77ce56cdb5f50b83ca0c59a31362e1a5eeb4.zip | |
media: rc: meson-ir: add timeout on idle
Meson doesn't seem to be able to generate timeout events in hardware. So
install a software timer to generate the timeout events required by the
decoders to prevent "ghost keypresses".
Reported-by: Matthias Reichl <hias@horus.com>
Tested-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/rc')
| -rw-r--r-- | drivers/media/rc/meson-ir.c | 3 | ||||
| -rw-r--r-- | drivers/media/rc/rc-ir-raw.c | 30 |
2 files changed, 28 insertions, 5 deletions
diff --git a/drivers/media/rc/meson-ir.c b/drivers/media/rc/meson-ir.c index f2204eb77e2a..64b0aa4f4db7 100644 --- a/drivers/media/rc/meson-ir.c +++ b/drivers/media/rc/meson-ir.c @@ -97,8 +97,7 @@ static irqreturn_t meson_ir_irq(int irqno, void *dev_id) status = readl_relaxed(ir->reg + IR_DEC_STATUS); rawir.pulse = !!(status & STATUS_IR_DEC_IN); - ir_raw_event_store(ir->rc, &rawir); - ir_raw_event_handle(ir->rc); + ir_raw_event_store_with_timeout(ir->rc, &rawir); spin_unlock(&ir->lock); diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c index 984bb82851f9..374f83105a23 100644 --- a/drivers/media/rc/rc-ir-raw.c +++ b/drivers/media/rc/rc-ir-raw.c @@ -92,7 +92,6 @@ int ir_raw_event_store_edge(struct rc_dev *dev, bool pulse) { ktime_t now; DEFINE_IR_RAW_EVENT(ev); - int rc = 0; if (!dev->raw) return -EINVAL; @@ -101,8 +100,33 @@ int ir_raw_event_store_edge(struct rc_dev *dev, bool pulse) ev.duration = ktime_to_ns(ktime_sub(now, dev->raw->last_event)); ev.pulse = !pulse; + return ir_raw_event_store_with_timeout(dev, &ev); +} +EXPORT_SYMBOL_GPL(ir_raw_event_store_edge); + +/* + * ir_raw_event_store_with_timeout() - pass a pulse/space duration to the raw + * ir decoders, schedule decoding and + * timeout + * @dev: the struct rc_dev device descriptor + * @ev: the struct ir_raw_event descriptor of the pulse/space + * + * This routine (which may be called from an interrupt context) stores a + * pulse/space duration for the raw ir decoding state machines, schedules + * decoding and generates a timeout. + */ +int ir_raw_event_store_with_timeout(struct rc_dev *dev, struct ir_raw_event *ev) +{ + ktime_t now; + int rc = 0; + + if (!dev->raw) + return -EINVAL; + + now = ktime_get(); + spin_lock(&dev->raw->edge_spinlock); - rc = ir_raw_event_store(dev, &ev); + rc = ir_raw_event_store(dev, ev); dev->raw->last_event = now; @@ -117,7 +141,7 @@ int ir_raw_event_store_edge(struct rc_dev *dev, bool pulse) return rc; } -EXPORT_SYMBOL_GPL(ir_raw_event_store_edge); +EXPORT_SYMBOL_GPL(ir_raw_event_store_with_timeout); /** * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing |