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[media] rtl28xxu: add module parameter to disable IR

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Disable IR interrupts in order to avoid SDR sample loss.
IR interrupts causes some extra load for device and it seems
be one reason to loss samples when sampling rate is high.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antti Palosaari 2013-11-22 14:20:14 -03:00 • committed by Mauro Carvalho Chehab
parent 96a5b3a869
commit 94b5fa6c20
1 changed files with 7 additions and 0 deletions
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7
drivers/media/usb/dvb-usb-v2/rtl28xxu.c
View file

@ -35,6 +35,9 @@
#include "tua9001.h"
#include "r820t.h"
static int rtl28xxu_disable_rc;
module_param_named(disable_rc, rtl28xxu_disable_rc, int, 0644);
MODULE_PARM_DESC(disable_rc, "disable RTL2832U remote controller");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
@ -1322,6 +1325,10 @@ err:
static int rtl2832u_get_rc_config(struct dvb_usb_device *d,
struct dvb_usb_rc *rc)
{
/* disable IR interrupts in order to avoid SDR sample loss */
if (rtl28xxu_disable_rc)
return rtl28xx_wr_reg(d, IR_RX_IE, 0x00);
/* load empty to enable rc */
if (!rc->map_name)
rc->map_name = RC_MAP_EMPTY;