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| author | James Hogan <james@albanarts.com> | 2015-03-31 14:48:11 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-01-30 13:56:21 -0200 |
| commit | 914535c05971603490e3c025ab5e4bb729a7b0b9 (patch) | |
| tree | 727fa48b667007f9d2c7fb9b96cb65bf2a0e9370 /drivers/media/rc | |
| parent | f423ccc1a32f8111ddfec9ef7efbccc8b73f3ea5 (diff) | |
| download | linux-914535c05971603490e3c025ab5e4bb729a7b0b9.tar.bz2 | |
[media] rc: rc-loopback: Add loopback of filter scancodes
Add the s_wakeup_filter callback to the rc-loopback driver, which instead
of setting the filter just feeds the scancode back through the input
device so that it can be verified.
Signed-off-by: James Hogan <james@albanarts.com>
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Cc: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/rc')
| -rw-r--r-- | drivers/media/rc/rc-loopback.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/media/rc/rc-loopback.c b/drivers/media/rc/rc-loopback.c index 06dd97d4b7cd..294c0fdbc5a9 100644 --- a/drivers/media/rc/rc-loopback.c +++ b/drivers/media/rc/rc-loopback.c @@ -22,6 +22,7 @@ #include <linux/device.h> #include <linux/module.h> #include <linux/sched.h> +#include <linux/slab.h> #include <media/rc-core.h> #define DRIVER_NAME "rc-loopback" @@ -172,6 +173,41 @@ static int loop_set_carrier_report(struct rc_dev *dev, int enable) return 0; } +static int loop_set_wakeup_filter(struct rc_dev *dev, + struct rc_scancode_filter *sc) +{ + static const unsigned int max = 512; + struct ir_raw_event *raw; + int ret; + int i; + + /* fine to disable filter */ + if (!sc->mask) + return 0; + + /* encode the specified filter and loop it back */ + raw = kmalloc_array(max, sizeof(*raw), GFP_KERNEL); + if (!raw) + return -ENOMEM; + + ret = ir_raw_encode_scancode(dev->wakeup_protocol, sc->data, raw, max); + /* still loop back the partial raw IR even if it's incomplete */ + if (ret == -ENOBUFS) + ret = max; + if (ret >= 0) { + /* do the loopback */ + for (i = 0; i < ret; ++i) + ir_raw_event_store(dev, &raw[i]); + ir_raw_event_handle(dev); + + ret = 0; + } + + kfree(raw); + + return ret; +} + static int __init loop_init(void) { struct rc_dev *rc; @@ -192,6 +228,8 @@ static int __init loop_init(void) rc->priv = &loopdev; rc->driver_type = RC_DRIVER_IR_RAW; rc->allowed_protocols = RC_BIT_ALL_IR_DECODER; + rc->allowed_wakeup_protocols = RC_BIT_ALL_IR_ENCODER; + rc->encode_wakeup = true; rc->timeout = 100 * 1000 * 1000; /* 100 ms */ rc->min_timeout = 1; rc->max_timeout = UINT_MAX; @@ -205,6 +243,7 @@ static int __init loop_init(void) rc->s_idle = loop_set_idle; rc->s_learning_mode = loop_set_learning_mode; rc->s_carrier_report = loop_set_carrier_report; + rc->s_wakeup_filter = loop_set_wakeup_filter; loopdev.txmask = RXMASK_REGULAR; loopdev.txcarrier = 36000; |