diff options
| author | Antti Palosaari <crope@iki.fi> | 2014-08-27 10:59:27 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-09-22 01:24:32 +0400 |
| commit | 676c350f97366f648dbe7f7f8202a695d946f764 (patch) | |
| tree | 7c6a245865b7b9451432db6510a062a3eb0532c7 /drivers/media/tuners/it913x.c | |
| parent | d2dbc00cea35081b9f998a0985d151f60ce37835 (diff) | |
| download | linux-676c350f97366f648dbe7f7f8202a695d946f764.tar.xz | |
[media] it913x: re-implement sleep
Re-implement sleep. Based USB sniffs taken from the latest Hauppauge
windows driver version 07/10/2014, 14.6.23.32191.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/tuners/it913x.c')
| -rw-r--r-- | drivers/media/tuners/it913x.c | 76 |
1 files changed, 60 insertions, 16 deletions
diff --git a/drivers/media/tuners/it913x.c b/drivers/media/tuners/it913x.c index f3e212c127c8..11d391a5d5c6 100644 --- a/drivers/media/tuners/it913x.c +++ b/drivers/media/tuners/it913x.c @@ -26,7 +26,8 @@ struct it913x_dev { struct i2c_client *client; struct regmap *regmap; struct dvb_frontend *fe; - u8 chip_ver; + u8 chip_ver:2; + u8 role:2; u8 firmware_ver; u16 tun_xtal; u8 tun_fdiv; @@ -122,6 +123,62 @@ static int it913x_init(struct dvb_frontend *fe) return regmap_write(dev->regmap, 0x80ed81, val); } +static int it913x_sleep(struct dvb_frontend *fe) +{ + struct it913x_dev *dev = fe->tuner_priv; + int ret, len; + + dev_dbg(&dev->client->dev, "role=%u\n", dev->role); + + ret = regmap_bulk_write(dev->regmap, 0x80ec40, "\x00", 1); + if (ret) + goto err; + + /* + * Writing '0x00' to master tuner register '0x80ec08' causes slave tuner + * communication lost. Due to that, we cannot put master full sleep. + */ + if (dev->role == IT913X_ROLE_DUAL_MASTER) + len = 4; + else + len = 15; + + dev_dbg(&dev->client->dev, "role=%u len=%d\n", dev->role, len); + + ret = regmap_bulk_write(dev->regmap, 0x80ec02, + "\x3f\x1f\x3f\x3e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", + len); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x80ec12, "\x00\x00\x00\x00", 4); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x80ec17, + "\x00\x00\x00\x00\x00\x00\x00\x00\x00", 9); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x80ec22, + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 10); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x80ec20, "\x00", 1); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x80ec3f, "\x01", 1); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&dev->client->dev, "failed %d\n", ret); + return ret; +} + static int it9137_set_params(struct dvb_frontend *fe) { struct it913x_dev *dev = fe->tuner_priv; @@ -274,20 +331,6 @@ static int it9137_set_params(struct dvb_frontend *fe) return (ret < 0) ? -ENODEV : 0; } -/* Power sequence */ -/* Power Up Tuner on -> Frontend suspend off -> Tuner clk on */ -/* Power Down Frontend suspend on -> Tuner clk off -> Tuner off */ - -static int it913x_sleep(struct dvb_frontend *fe) -{ - struct it913x_dev *dev = fe->tuner_priv; - - if (dev->chip_ver == 0x01) - return it913x_script_loader(dev, it9135ax_tuner_off); - else - return it913x_script_loader(dev, it9137_tuner_off); -} - static const struct dvb_tuner_ops it913x_tuner_ops = { .info = { .name = "ITE Tech IT913X", @@ -323,6 +366,7 @@ static int it913x_probe(struct i2c_client *client, dev->client = client; dev->fe = cfg->fe; dev->chip_ver = cfg->chip_ver; + dev->role = cfg->role; dev->firmware_ver = 1; dev->regmap = regmap_init_i2c(client, ®map_config); if (IS_ERR(dev->regmap)) { @@ -349,7 +393,7 @@ static int it913x_probe(struct i2c_client *client, dev_info(&dev->client->dev, "ITE IT913X %s successfully attached\n", chip_ver_str); - dev_dbg(&dev->client->dev, "chip_ver=%02x\n", dev->chip_ver); + dev_dbg(&dev->client->dev, "chip_ver=%u role=%u\n", dev->chip_ver, dev->role); return 0; err_regmap_exit: |