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[media] rtl2832: move stats polling to read status

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Do statistics polling on read status in order to avoid
unnecessary delayed work.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2016-02-06 20:12:05 -02:00 committed by Mauro Carvalho Chehab
parent d884acad4f
commit 426508e61c
2 changed files with 30 additions and 50 deletions
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79
drivers/media/dvb-frontends/rtl2832.c
View File

@ -408,8 +408,6 @@ static int rtl2832_init(struct dvb_frontend *fe)
c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
c->post_bit_count.len = 1;
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
/* start statistics polling */
schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
dev->sleeping = false;
return 0;
@ -427,8 +425,6 @@ static int rtl2832_sleep(struct dvb_frontend *fe)
dev_dbg(&client->dev, "\n");
dev->sleeping = true;
/* stop statistics polling */
cancel_delayed_work_sync(&dev->stat_work);
dev->fe_status = 0;
ret = rtl2832_wr_demod_reg(dev, DVBT_SOFT_RST, 0x1);
@ -691,8 +687,11 @@ static int rtl2832_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct rtl2832_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
u32 uninitialized_var(tmp);
u8 u8tmp, buf[2];
u16 u16tmp;
dev_dbg(&client->dev, "\n");
@ -713,45 +712,6 @@ static int rtl2832_read_status(struct dvb_frontend *fe, enum fe_status *status)
}
dev->fe_status = *status;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int rtl2832_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
/* report SNR in resolution of 0.1 dB */
if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
*snr = div_s64(c->cnr.stat[0].svalue, 100);
else
*snr = 0;
return 0;
}
static int rtl2832_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct rtl2832_dev *dev = fe->demodulator_priv;
*ber = (dev->post_bit_error - dev->post_bit_error_prev);
dev->post_bit_error_prev = dev->post_bit_error;
return 0;
}
static void rtl2832_stat_work(struct work_struct *work)
{
struct rtl2832_dev *dev = container_of(work, struct rtl2832_dev, stat_work.work);
struct i2c_client *client = dev->client;
struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
int ret, tmp;
u8 u8tmp, buf[2];
u16 u16tmp;
dev_dbg(&client->dev, "\n");
/* signal strength */
if (dev->fe_status & FE_HAS_SIGNAL) {
@ -788,11 +748,11 @@ static void rtl2832_stat_work(struct work_struct *work)
constellation = (u8tmp >> 2) & 0x03; /* [3:2] */
if (constellation > CONSTELLATION_NUM - 1)
goto err_schedule_delayed_work;
goto err;
hierarchy = (u8tmp >> 4) & 0x07; /* [6:4] */
if (hierarchy > HIERARCHY_NUM - 1)
goto err_schedule_delayed_work;
goto err;
ret = rtl2832_bulk_read(client, 0x40c, buf, 2);
if (ret)
@ -834,11 +794,33 @@ static void rtl2832_stat_work(struct work_struct *work)
c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
err_schedule_delayed_work:
schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
return;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int rtl2832_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
/* report SNR in resolution of 0.1 dB */
if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
*snr = div_s64(c->cnr.stat[0].svalue, 100);
else
*snr = 0;
return 0;
}
static int rtl2832_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct rtl2832_dev *dev = fe->demodulator_priv;
*ber = (dev->post_bit_error - dev->post_bit_error_prev);
dev->post_bit_error_prev = dev->post_bit_error;
return 0;
}
/*
@ -1235,7 +1217,6 @@ static int rtl2832_probe(struct i2c_client *client,
dev->pdata = client->dev.platform_data;
dev->sleeping = true;
INIT_DELAYED_WORK(&dev->i2c_gate_work, rtl2832_i2c_gate_work);
INIT_DELAYED_WORK(&dev->stat_work, rtl2832_stat_work);
/* create regmap */
mutex_init(&dev->regmap_mutex);
dev->regmap_config.reg_bits = 8,

1
drivers/media/dvb-frontends/rtl2832_priv.h
View File

@ -38,7 +38,6 @@ struct rtl2832_dev {
struct regmap *regmap;
struct i2c_adapter *i2c_adapter_tuner;
struct dvb_frontend fe;
struct delayed_work stat_work;
enum fe_status fe_status;
u64 post_bit_error_prev; /* for old DVBv3 read_ber() calculation */
u64 post_bit_error;