diff options
| author | Sean Young <sean@mess.org> | 2016-07-10 13:34:38 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-15 12:01:46 -0300 |
| commit | 4f253cecf8cb59816d53267170440efa3e1df018 (patch) | |
| tree | 1e80321ddebea529875d348659b4b9027655ba11 /drivers/media/rc/redrat3.c | |
| parent | 25da661a14f38f34f01e0ddd6247614a295d29e3 (diff) | |
| download | linux-4f253cecf8cb59816d53267170440efa3e1df018.tar.bz2 | |
[media] redrat3: make hardware timeout configurable
Instead of hardcoding a timeout, let userspace change it dynamically
by adding a s_timeout ops.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/rc/redrat3.c')
| -rw-r--r-- | drivers/media/rc/redrat3.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c index 1e65f7aa58e2..399f44d89a29 100644 --- a/drivers/media/rc/redrat3.c +++ b/drivers/media/rc/redrat3.c @@ -475,6 +475,37 @@ static u32 redrat3_get_timeout(struct redrat3_dev *rr3) return timeout; } +static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutns) +{ + struct redrat3_dev *rr3 = rc_dev->priv; + struct usb_device *udev = rr3->udev; + struct device *dev = rr3->dev; + u32 *timeout; + int ret; + + timeout = kmalloc(sizeof(*timeout), GFP_KERNEL); + if (!timeout) + return -ENOMEM; + + *timeout = cpu_to_be32(redrat3_us_to_len(timeoutns / 1000)); + ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM, + USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, + RR3_IR_IO_SIG_TIMEOUT, 0, timeout, sizeof(*timeout), + HZ * 25); + dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n", + be32_to_cpu(*timeout), ret); + + if (ret == sizeof(*timeout)) { + rr3->hw_timeout = timeoutns / 1000; + ret = 0; + } else if (ret >= 0) + ret = -EIO; + + kfree(timeout); + + return ret; +} + static void redrat3_reset(struct redrat3_dev *rr3) { struct usb_device *udev = rr3->udev; @@ -856,7 +887,10 @@ static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) rc->priv = rr3; rc->driver_type = RC_DRIVER_IR_RAW; rc->allowed_protocols = RC_BIT_ALL; + rc->min_timeout = MS_TO_NS(RR3_RX_MIN_TIMEOUT); + rc->max_timeout = MS_TO_NS(RR3_RX_MAX_TIMEOUT); rc->timeout = US_TO_NS(rr3->hw_timeout); + rc->s_timeout = redrat3_set_timeout; rc->tx_ir = redrat3_transmit_ir; rc->s_tx_carrier = redrat3_set_tx_carrier; rc->driver_name = DRIVER_NAME; |