diff options
| author | Jarod Wilson <jarod@redhat.com> | 2011-01-21 00:31:18 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-01-31 17:19:15 +0300 |
| commit | 8df59918b5bc2c3c80e5e0b9386228df7ad54e65 (patch) | |
| tree | 71838f82c9997da31d8aea52160f324db0a67c04 /drivers/media/video/ir-kbd-i2c.c | |
| parent | 5766d204ae6c1f54beaef37a18c3c9b5e32c3b16 (diff) | |
| download | linux-8df59918b5bc2c3c80e5e0b9386228df7ad54e65.tar.xz | |
[media] ir-kbd-i2c: improve remote behavior with z8 behind usb
Add the same "are you ready?" i2c_master_send() poll command to
get_key_haup_xvr found in lirc_zilog, which is apparently seen in
the Windows driver for the PVR-150 w/a z8. This stabilizes what is
received from both the HD-PVR and HVR-1950, even with their polling
intervals at the default of 100, thus the removal of the custom
260ms polling_interval in pvrusb2-i2c-core.c.
Acked-by: Andy Walls <awalls@md.metrocast.net>
Acked-by: Mike Isely <isely@isely.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/ir-kbd-i2c.c')
| -rw-r--r-- | drivers/media/video/ir-kbd-i2c.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c index d2b20ad383a3..a221ad68b330 100644 --- a/drivers/media/video/ir-kbd-i2c.c +++ b/drivers/media/video/ir-kbd-i2c.c @@ -128,6 +128,19 @@ static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) static int get_key_haup_xvr(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) { + int ret; + unsigned char buf[1] = { 0 }; + + /* + * This is the same apparent "are you ready?" poll command observed + * watching Windows driver traffic and implemented in lirc_zilog. With + * this added, we get far saner remote behavior with z8 chips on usb + * connected devices, even with the default polling interval of 100ms. + */ + ret = i2c_master_send(ir->c, buf, 1); + if (ret != 1) + return (ret < 0) ? ret : -EINVAL; + return get_key_haup_common (ir, ir_key, ir_raw, 6, 3); } |