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 <cr...@iki.fi>
---
drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 37 ++++++++++++++++++++++-----------
1 file 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 27b1e03..5ea52c7 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,
--
http://palosaari.fi/
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