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author | Antti Palosaari <crope@iki.fi> | 2015-04-15 19:12:34 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-05-18 15:51:54 -0300 |
commit | fc851c66b275e4092bb79c888a80dcdd1920c0b8 (patch) | |
tree | bddcd2f2fe874c78eac1827a0c5c490bdb004753 /drivers/media/tuners | |
parent | b3f02270b2618833fd44f8e5a8c1f82ab47741c2 (diff) | |
download | linux-stable-fc851c66b275e4092bb79c888a80dcdd1920c0b8.tar.gz linux-stable-fc851c66b275e4092bb79c888a80dcdd1920c0b8.tar.bz2 linux-stable-fc851c66b275e4092bb79c888a80dcdd1920c0b8.zip |
[media] tua9001: add I2C bindings
Add I2C bindings.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/tuners')
-rw-r--r-- | drivers/media/tuners/tua9001.c | 100 | ||||
-rw-r--r-- | drivers/media/tuners/tua9001.h | 13 | ||||
-rw-r--r-- | drivers/media/tuners/tua9001_priv.h | 4 |
3 files changed, 114 insertions, 3 deletions
diff --git a/drivers/media/tuners/tua9001.c b/drivers/media/tuners/tua9001.c index 83a6240f64d3..55cac20ae034 100644 --- a/drivers/media/tuners/tua9001.c +++ b/drivers/media/tuners/tua9001.c @@ -28,7 +28,7 @@ static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val) u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff }; struct i2c_msg msg[1] = { { - .addr = priv->cfg->i2c_addr, + .addr = priv->i2c_addr, .flags = 0, .len = sizeof(buf), .buf = buf, @@ -253,7 +253,7 @@ struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe, if (priv == NULL) return NULL; - priv->cfg = cfg; + priv->i2c_addr = cfg->i2c_addr; priv->i2c = i2c; if (fe->callback) { @@ -289,6 +289,102 @@ err: } EXPORT_SYMBOL(tua9001_attach); +static int tua9001_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tua9001_priv *dev; + struct tua9001_platform_data *pdata = client->dev.platform_data; + struct dvb_frontend *fe = pdata->dvb_frontend; + int ret; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + dev->client = client; + dev->i2c_addr = client->addr; + dev->i2c = client->adapter; + dev->fe = pdata->dvb_frontend; + + if (fe->callback) { + ret = fe->callback(client->adapter, + DVB_FRONTEND_COMPONENT_TUNER, + TUA9001_CMD_CEN, 1); + if (ret) + goto err_kfree; + + ret = fe->callback(client->adapter, + DVB_FRONTEND_COMPONENT_TUNER, + TUA9001_CMD_RXEN, 0); + if (ret) + goto err_kfree; + + ret = fe->callback(client->adapter, + DVB_FRONTEND_COMPONENT_TUNER, + TUA9001_CMD_RESETN, 1); + if (ret) + goto err_kfree; + } + + fe->tuner_priv = dev; + memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops, + sizeof(struct dvb_tuner_ops)); + fe->ops.tuner_ops.release = NULL; + i2c_set_clientdata(client, dev); + + dev_info(&client->dev, "Infineon TUA 9001 successfully attached\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int tua9001_remove(struct i2c_client *client) +{ + struct tua9001_priv *dev = i2c_get_clientdata(client); + struct dvb_frontend *fe = dev->fe; + int ret; + + dev_dbg(&client->dev, "\n"); + + if (fe->callback) { + ret = fe->callback(client->adapter, + DVB_FRONTEND_COMPONENT_TUNER, + TUA9001_CMD_CEN, 0); + if (ret) + goto err_kfree; + } + kfree(dev); + return 0; +err_kfree: + kfree(dev); + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static const struct i2c_device_id tua9001_id_table[] = { + {"tua9001", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, tua9001_id_table); + +static struct i2c_driver tua9001_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "tua9001", + .suppress_bind_attrs = true, + }, + .probe = tua9001_probe, + .remove = tua9001_remove, + .id_table = tua9001_id_table, +}; + +module_i2c_driver(tua9001_driver); + MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver"); MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); MODULE_LICENSE("GPL"); diff --git a/drivers/media/tuners/tua9001.h b/drivers/media/tuners/tua9001.h index 2c3375c7aeb9..0b4fc8d26f52 100644 --- a/drivers/media/tuners/tua9001.h +++ b/drivers/media/tuners/tua9001.h @@ -24,6 +24,19 @@ #include <linux/kconfig.h> #include "dvb_frontend.h" +/* + * I2C address + * 0x60, + */ + +/** + * struct tua9001_platform_data - Platform data for the tua9001 driver + * @dvb_frontend: DVB frontend. + */ +struct tua9001_platform_data { + struct dvb_frontend *dvb_frontend; +}; + struct tua9001_config { /* * I2C address diff --git a/drivers/media/tuners/tua9001_priv.h b/drivers/media/tuners/tua9001_priv.h index 73cc1ce0575c..3282a1a12e86 100644 --- a/drivers/media/tuners/tua9001_priv.h +++ b/drivers/media/tuners/tua9001_priv.h @@ -27,8 +27,10 @@ struct reg_val { }; struct tua9001_priv { - struct tua9001_config *cfg; + struct i2c_client *client; struct i2c_adapter *i2c; + u8 i2c_addr; + struct dvb_frontend *fe; }; #endif |