diff options
author | Antti Palosaari <crope@iki.fi> | 2015-04-16 19:28:39 +0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-06-06 13:19:47 +0300 |
commit | b561baec11a49b557530736c2a7604a0232f281b (patch) | |
tree | 58cf6207ffc9c94dac4bb63106fb52e852fc68bc /drivers/media/dvb-frontends/a8293.c | |
parent | d69abb79e123c111966fb41fe3c21533e2162f1a (diff) | |
download | linux-b561baec11a49b557530736c2a7604a0232f281b.tar.xz |
[media] a8293: implement I2C client bindings
Implement I2C client bindings.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/a8293.c')
-rw-r--r-- | drivers/media/dvb-frontends/a8293.c | 87 |
1 files changed, 84 insertions, 3 deletions
diff --git a/drivers/media/dvb-frontends/a8293.c b/drivers/media/dvb-frontends/a8293.c index 780da58132f1..3f0cf9ee6672 100644 --- a/drivers/media/dvb-frontends/a8293.c +++ b/drivers/media/dvb-frontends/a8293.c @@ -22,8 +22,9 @@ #include "a8293.h" struct a8293_priv { + u8 i2c_addr; struct i2c_adapter *i2c; - const struct a8293_config *cfg; + struct i2c_client *client; u8 reg[2]; }; @@ -32,7 +33,7 @@ static int a8293_i2c(struct a8293_priv *priv, u8 *val, int len, bool rd) int ret; struct i2c_msg msg[1] = { { - .addr = priv->cfg->i2c_addr, + .addr = priv->i2c_addr, .len = len, .buf = val, } @@ -128,7 +129,7 @@ struct dvb_frontend *a8293_attach(struct dvb_frontend *fe, /* setup the priv */ priv->i2c = i2c; - priv->cfg = cfg; + priv->i2c_addr = cfg->i2c_addr; fe->sec_priv = priv; /* check if the SEC is there */ @@ -164,6 +165,86 @@ err: } EXPORT_SYMBOL(a8293_attach); +static int a8293_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct a8293_priv *dev; + struct a8293_platform_data *pdata = client->dev.platform_data; + struct dvb_frontend *fe = pdata->dvb_frontend; + int ret; + u8 buf[2]; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + dev->client = client; + dev->i2c = client->adapter; + dev->i2c_addr = client->addr; + + /* check if the SEC is there */ + ret = a8293_rd(dev, buf, 2); + if (ret) + goto err_kfree; + + /* ENB=0 */ + dev->reg[0] = 0x10; + ret = a8293_wr(dev, &dev->reg[0], 1); + if (ret) + goto err_kfree; + + /* TMODE=0, TGATE=1 */ + dev->reg[1] = 0x82; + ret = a8293_wr(dev, &dev->reg[1], 1); + if (ret) + goto err_kfree; + + /* override frontend ops */ + fe->ops.set_voltage = a8293_set_voltage; + + fe->sec_priv = dev; + i2c_set_clientdata(client, dev); + + dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int a8293_remove(struct i2c_client *client) +{ + struct a8293_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + kfree(dev); + return 0; +} + +static const struct i2c_device_id a8293_id_table[] = { + {"a8293", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, a8293_id_table); + +static struct i2c_driver a8293_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "a8293", + .suppress_bind_attrs = true, + }, + .probe = a8293_probe, + .remove = a8293_remove, + .id_table = a8293_id_table, +}; + +module_i2c_driver(a8293_driver); + MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); MODULE_DESCRIPTION("Allegro A8293 SEC driver"); MODULE_LICENSE("GPL"); |