diff options
| author | Antti Palosaari <crope@iki.fi> | 2014-09-27 01:22:45 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-11-14 17:35:47 -0200 |
| commit | 698f6260b886291e14706c57daec2e1560d59af5 (patch) | |
| tree | 93f9176f9f5a641dc49282afda1c7ee14f7eec0b /drivers/media/usb/dvb-usb-v2/rtl28xxu.c | |
| parent | b936d166080cf29ca300116add30826fbfd8c0e7 (diff) | |
[media] rtl28xxu: enable demod ADC only when needed
Enable integrated demod ADC only when demod is used. Keep integrated
demod ADC disabled when external demod is used. This fixes corrupted
stream in a case external demod was used.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/rtl28xxu.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index 27b1e0397e71..5ea52c7616f1 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -1201,13 +1201,6 @@ static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff) if (ret) goto err; - mdelay(5); - - /* enable ADC */ - ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x48, 0x48); - if (ret) - goto err; - /* streaming EP: clear stall & reset */ ret = rtl28xx_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2); if (ret) @@ -1222,11 +1215,6 @@ static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff) if (ret) goto err; - /* disable ADC */ - ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x48); - if (ret) - goto err; - /* disable PLL */ ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x80); if (ret) @@ -1244,6 +1232,30 @@ err: return ret; } +static int rtl2832u_frontend_ctrl(struct dvb_frontend *fe, int onoff) +{ + struct dvb_usb_device *d = fe_to_d(fe); + int ret; + u8 val; + + dev_dbg(&d->udev->dev, "%s: fe=%d onoff=%d\n", __func__, fe->id, onoff); + + /* control internal demod ADC */ + if (fe->id == 0 && onoff) + val = 0x48; /* enable ADC */ + else + val = 0x00; /* disable ADC */ + + ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, val, 0x48); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret); + return ret; +} + #if IS_ENABLED(CONFIG_RC_CORE) static int rtl2831u_rc_query(struct dvb_usb_device *d) { @@ -1467,6 +1479,7 @@ static const struct dvb_usb_device_properties rtl2832u_props = { .size_of_priv = sizeof(struct rtl28xxu_priv), .power_ctrl = rtl2832u_power_ctrl, + .frontend_ctrl = rtl2832u_frontend_ctrl, .i2c_algo = &rtl28xxu_i2c_algo, .read_config = rtl2832u_read_config, .frontend_attach = rtl2832u_frontend_attach, |