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[media] rtl2832: implement PID filter 

Implement PID filter. This demod has PID filter size of 32 PIDs.

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 2014-12-14 14:07:35 -03:00 committed by Mauro Carvalho Chehab
parent 1c7da405c6
commit 4b01e01a81
3 changed files with 72 additions and 0 deletions
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69
drivers/media/dvb-frontends/rtl2832.c
View File

@ -1145,6 +1145,73 @@ err:
return ret;
}
static int rtl2832_pid_filter_ctrl(struct dvb_frontend *fe, int onoff)
{
struct rtl2832_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
u8 u8tmp;
dev_dbg(&client->dev, "onoff=%d\n", onoff);
/* enable / disable PID filter */
if (onoff)
u8tmp = 0x80;
else
u8tmp = 0x00;
ret = rtl2832_update_bits(client, 0x061, 0xc0, u8tmp);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int rtl2832_pid_filter(struct dvb_frontend *fe, u8 index, u16 pid,
int onoff)
{
struct rtl2832_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
int ret;
u8 buf[4];
dev_dbg(&client->dev, "index=%d pid=%04x onoff=%d\n",
index, pid, onoff);
/* skip invalid PIDs (0x2000) */
if (pid > 0x1fff || index > 32)
return 0;
if (onoff)
set_bit(index, &dev->filters);
else
clear_bit(index, &dev->filters);
/* enable / disable PIDs */
buf[0] = (dev->filters >> 0) & 0xff;
buf[1] = (dev->filters >> 8) & 0xff;
buf[2] = (dev->filters >> 16) & 0xff;
buf[3] = (dev->filters >> 24) & 0xff;
ret = rtl2832_bulk_write(client, 0x062, buf, 4);
if (ret)
goto err;
/* add PID */
buf[0] = (pid >> 8) & 0xff;
buf[1] = (pid >> 0) & 0xff;
ret = rtl2832_bulk_write(client, 0x066 + 2 * index, buf, 2);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int rtl2832_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@ -1235,6 +1302,8 @@ static int rtl2832_probe(struct i2c_client *client,
pdata->get_i2c_adapter = rtl2832_get_i2c_adapter_;
pdata->get_private_i2c_adapter = rtl2832_get_private_i2c_adapter_;
pdata->enable_slave_ts = rtl2832_enable_slave_ts;
pdata->pid_filter = rtl2832_pid_filter;
pdata->pid_filter_ctrl = rtl2832_pid_filter_ctrl;
dev_info(&client->dev, "Realtek RTL2832 successfully attached\n");
return 0;

2
drivers/media/dvb-frontends/rtl2832.h
View File

@ -78,6 +78,8 @@ struct rtl2832_platform_data {
struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
struct i2c_adapter* (*get_private_i2c_adapter)(struct i2c_client *);
int (*enable_slave_ts)(struct i2c_client *);
int (*pid_filter)(struct dvb_frontend *, u8, u16, int);
int (*pid_filter_ctrl)(struct dvb_frontend *, int);
};
#endif /* RTL2832_H */

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

@ -41,6 +41,7 @@ struct rtl2832_dev {
u64 post_bit_count;
bool sleeping;
struct delayed_work i2c_gate_work;
unsigned long filters; /* PID filter */
};
struct rtl2832_reg_entry {