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[media] media: dvb-frontends: ts2020: Added in a option for frequency divider value for s600 devices

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When the tuner part of the ds3000 driver was split to share code with the m88rs2000 driver, the ts2020 driver used
the frequency divider value from the m88rs2000 driver.  However the ds3000 driver requires a different value, and this
resulted in some frequecies being invisible to the tuner.  This patch adds back in the value needed for the ds3000 driver
and configured as an option in the dw2102 frontend driver.
It may also apply to su3000 devices, which use the same ds3000 driver, but for now it is only applied to the s660 device.

Signed-off-by: John Horan <knasher@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
John Horan 2013-08-28 09:37:37 -03:00 committed by Mauro Carvalho Chehab
parent d7f74c0310
commit 03a6727995
3 changed files with 14 additions and 4 deletions
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4
drivers/media/dvb-frontends/ts2020.c
View File

@ -31,6 +31,7 @@ struct ts2020_priv {
struct i2c_adapter *i2c;
u8 clk_out_div;
u32 frequency;
u32 frequency_div;
};
static int ts2020_release(struct dvb_frontend *fe)
@ -193,7 +194,7 @@ static int ts2020_set_params(struct dvb_frontend *fe)
u8 lo = 0x01, div4 = 0x0;
/* Calculate frequency divider */
if (frequency < 1060000) {
if (frequency < priv->frequency_div) {
lo |= 0x10;
div4 = 0x1;
ndiv = (frequency * 14 * 4) / TS2020_XTAL_FREQ;
@ -340,6 +341,7 @@ struct dvb_frontend *ts2020_attach(struct dvb_frontend *fe,
priv->i2c_address = config->tuner_address;
priv->i2c = i2c;
priv->clk_out_div = config->clk_out_div;
priv->frequency_div = config->frequency_div;
fe->tuner_priv = priv;
/* Wake Up the tuner */

1
drivers/media/dvb-frontends/ts2020.h
View File

@ -28,6 +28,7 @@
struct ts2020_config {
u8 tuner_address;
u8 clk_out_div;
u32 frequency_div;
};
#if IS_ENABLED(CONFIG_DVB_TS2020)

13
drivers/media/usb/dvb-usb/dw2102.c
View File

@ -955,9 +955,10 @@ static struct ds3000_config dw2104_ds3000_config = {
.demod_address = 0x68,
};
static struct ts2020_config dw2104_ts2020_config = {
static struct ts2020_config dw2104_ts2020_config = {
.tuner_address = 0x60,
.clk_out_div = 1,
.frequency_div = 1060000,
};
static struct ds3000_config s660_ds3000_config = {
@ -966,6 +967,12 @@ static struct ds3000_config s660_ds3000_config = {
.set_lock_led = dw210x_led_ctrl,
};
static struct ts2020_config s660_ts2020_config = {
.tuner_address = 0x60,
.clk_out_div = 1,
.frequency_div = 1146000,
};
static struct stv0900_config dw2104a_stv0900_config = {
.demod_address = 0x6a,
.demod_mode = 0,
@ -1205,7 +1212,7 @@ static int ds3000_frontend_attach(struct dvb_usb_adapter *d)
if (d->fe_adap[0].fe == NULL)
return -EIO;
dvb_attach(ts2020_attach, d->fe_adap[0].fe, &dw2104_ts2020_config,
dvb_attach(ts2020_attach, d->fe_adap[0].fe, &s660_ts2020_config,
&d->dev->i2c_adap);
st->old_set_voltage = d->fe_adap[0].fe->ops.set_voltage;
@ -1213,7 +1220,7 @@ static int ds3000_frontend_attach(struct dvb_usb_adapter *d)
dw210x_op_rw(d->dev->udev, 0x8a, 0, 0, obuf, 2, DW210X_WRITE_MSG);
info("Attached ds3000+ds2020!\n");
info("Attached ds3000+ts2020!\n");
return 0;
}