From 8df59918b5bc2c3c80e5e0b9386228df7ad54e65 Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Thu, 20 Jan 2011 18:31:18 -0300 Subject: [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 Acked-by: Mike Isely Signed-off-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/ir-kbd-i2c.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/media/video/ir-kbd-i2c.c') 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); } -- cgit v1.2.3