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[media] ts2020: Allow stats polling to be suppressed 

Statistics polling can not be done by lmedm04 driver's implementation of
M88RS2000/TS2020 because I2C messages stop the device's demuxer, so allow
polling for statistics to be suppressed in the ts2020 driver by setting
dont_poll in the ts2020_config struct.

Reported-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
David Howells 2015-06-03 08:35:08 -03:00 committed by Mauro Carvalho Chehab
parent 0f20baad24
commit c7275ae161
2 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/media/dvb-frontends/ts2020.c
View File

@ -40,6 +40,7 @@ struct ts2020_priv {
bool loop_through:1;
u8 clk_out:2;
u8 clk_out_div:5;
bool dont_poll:1;
u32 frequency_div; /* LO output divider switch frequency */
u32 frequency_khz; /* actual used LO frequency */
#define TS2020_M88TS2020 0
@ -52,6 +53,8 @@ struct ts2020_reg_val {
u8 val;
};
static void ts2020_stat_work(struct work_struct *work);
static int ts2020_release(struct dvb_frontend *fe)
{
struct ts2020_priv *priv = fe->tuner_priv;
@ -79,7 +82,8 @@ static int ts2020_sleep(struct dvb_frontend *fe)
return ret;
/* stop statistics polling */
cancel_delayed_work_sync(&priv->stat_work);
if (!priv->dont_poll)
cancel_delayed_work_sync(&priv->stat_work);
return 0;
}
@ -152,8 +156,8 @@ static int ts2020_init(struct dvb_frontend *fe)
c->strength.stat[0].scale = FE_SCALE_DECIBEL;
c->strength.stat[0].uvalue = 0;
/* Start statistics polling */
schedule_delayed_work(&priv->stat_work, 0);
/* Start statistics polling by invoking the work function */
ts2020_stat_work(&priv->stat_work.work);
return 0;
}
@ -445,7 +449,8 @@ static void ts2020_stat_work(struct work_struct *work)
c->strength.stat[0].scale = FE_SCALE_DECIBEL;
schedule_delayed_work(&priv->stat_work, msecs_to_jiffies(2000));
if (!priv->dont_poll)
schedule_delayed_work(&priv->stat_work, msecs_to_jiffies(2000));
return;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
@ -458,9 +463,13 @@ static int ts2020_read_signal_strength(struct dvb_frontend *fe,
u16 *_signal_strength)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct ts2020_priv *priv = fe->tuner_priv;
unsigned strength;
__s64 gain;
if (priv->dont_poll)
ts2020_stat_work(&priv->stat_work.work);
if (c->strength.stat[0].scale == FE_SCALE_NOT_AVAILABLE) {
*_signal_strength = 0;
return 0;
@ -585,6 +594,7 @@ static int ts2020_probe(struct i2c_client *client,
dev->loop_through = pdata->loop_through;
dev->clk_out = pdata->clk_out;
dev->clk_out_div = pdata->clk_out_div;
dev->dont_poll = pdata->dont_poll;
dev->frequency_div = pdata->frequency_div;
dev->fe = fe;
dev->get_agc_pwm = pdata->get_agc_pwm;

3
drivers/media/dvb-frontends/ts2020.h
View File

@ -48,6 +48,9 @@ struct ts2020_config {
*/
u8 clk_out_div:5;
/* Set to true to suppress stat polling */
bool dont_poll:1;
/*
* pointer to DVB frontend
*/