From d69abb79e123c111966fb41fe3c21533e2162f1a Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Thu, 16 Apr 2015 11:46:24 -0300 Subject: [PATCH] [media] tda10071: implement I2C client bindings Implement I2C client bindings. Signed-off-by: Antti Palosaari Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/tda10071.c | 95 +++++++++++++++++++++++++++++ drivers/media/dvb-frontends/tda10071.h | 29 +++++++++ drivers/media/dvb-frontends/tda10071_priv.h | 1 + 3 files changed, 125 insertions(+) diff --git a/drivers/media/dvb-frontends/tda10071.c b/drivers/media/dvb-frontends/tda10071.c index 4a19b85..3132854 100644 --- a/drivers/media/dvb-frontends/tda10071.c +++ b/drivers/media/dvb-frontends/tda10071.c @@ -1313,6 +1313,101 @@ static struct dvb_frontend_ops tda10071_ops = { .set_voltage = tda10071_set_voltage, }; +static struct dvb_frontend *tda10071_get_dvb_frontend(struct i2c_client *client) +{ + struct tda10071_priv *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + return &dev->fe; +} + +static int tda10071_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tda10071_priv *dev; + struct tda10071_platform_data *pdata = client->dev.platform_data; + int ret; + u8 u8tmp; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + dev->client = client; + dev->i2c = client->adapter; + dev->cfg.demod_i2c_addr = client->addr; + dev->cfg.i2c_wr_max = pdata->i2c_wr_max; + dev->cfg.ts_mode = pdata->ts_mode; + dev->cfg.spec_inv = pdata->spec_inv; + dev->cfg.xtal = pdata->clk; + dev->cfg.pll_multiplier = pdata->pll_multiplier; + dev->cfg.tuner_i2c_addr = pdata->tuner_i2c_addr; + + /* chip ID */ + ret = tda10071_rd_reg(dev, 0xff, &u8tmp); + if (ret || u8tmp != 0x0f) + goto err_kfree; + + /* chip type */ + ret = tda10071_rd_reg(dev, 0xdd, &u8tmp); + if (ret || u8tmp != 0x00) + goto err_kfree; + + /* chip version */ + ret = tda10071_rd_reg(dev, 0xfe, &u8tmp); + if (ret || u8tmp != 0x01) + goto err_kfree; + + /* create dvb_frontend */ + memcpy(&dev->fe.ops, &tda10071_ops, sizeof(struct dvb_frontend_ops)); + dev->fe.ops.release = NULL; + dev->fe.demodulator_priv = dev; + i2c_set_clientdata(client, dev); + + /* setup callbacks */ + pdata->get_dvb_frontend = tda10071_get_dvb_frontend; + + dev_info(&client->dev, "NXP TDA10071 successfully identified\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int tda10071_remove(struct i2c_client *client) +{ + struct tda10071_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + kfree(dev); + return 0; +} + +static const struct i2c_device_id tda10071_id_table[] = { + {"tda10071_cx24118", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, tda10071_id_table); + +static struct i2c_driver tda10071_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "tda10071", + .suppress_bind_attrs = true, + }, + .probe = tda10071_probe, + .remove = tda10071_remove, + .id_table = tda10071_id_table, +}; + +module_i2c_driver(tda10071_driver); + MODULE_AUTHOR("Antti Palosaari "); MODULE_DESCRIPTION("NXP TDA10071 DVB-S/S2 demodulator driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/media/dvb-frontends/tda10071.h b/drivers/media/dvb-frontends/tda10071.h index da89f42..0ffbfa5 100644 --- a/drivers/media/dvb-frontends/tda10071.h +++ b/drivers/media/dvb-frontends/tda10071.h @@ -24,6 +24,35 @@ #include #include +/* + * I2C address + * 0x55, + */ + +/** + * struct tda10071_platform_data - Platform data for the tda10071 driver + * @clk: Clock frequency. + * @i2c_wr_max: Max bytes I2C adapter can write at once. + * @ts_mode: TS mode. + * @spec_inv: Input spectrum inversion. + * @pll_multiplier: PLL multiplier. + * @tuner_i2c_addr: CX24118A tuner I2C address (0x14, 0x54, ...). + * @get_dvb_frontend: Get DVB frontend. + */ + +struct tda10071_platform_data { + u32 clk; + u16 i2c_wr_max; +#define TDA10071_TS_SERIAL 0 +#define TDA10071_TS_PARALLEL 1 + u8 ts_mode; + bool spec_inv; + u8 pll_multiplier; + u8 tuner_i2c_addr; + + struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *); +}; + struct tda10071_config { /* Demodulator I2C address. * Default: none, must set diff --git a/drivers/media/dvb-frontends/tda10071_priv.h b/drivers/media/dvb-frontends/tda10071_priv.h index 03f839c..7ec69ac 100644 --- a/drivers/media/dvb-frontends/tda10071_priv.h +++ b/drivers/media/dvb-frontends/tda10071_priv.h @@ -28,6 +28,7 @@ struct tda10071_priv { struct i2c_adapter *i2c; struct dvb_frontend fe; + struct i2c_client *client; struct tda10071_config cfg; u8 meas_count[2]; -- 2.7.4