2 * Allegro A8293 SEC driver
4 * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
20 struct i2c_client *client;
24 static int a8293_set_voltage(struct dvb_frontend *fe,
25 enum fe_sec_voltage fe_sec_voltage)
27 struct a8293_dev *dev = fe->sec_priv;
28 struct i2c_client *client = dev->client;
32 dev_dbg(&client->dev, "fe_sec_voltage=%d\n", fe_sec_voltage);
34 switch (fe_sec_voltage) {
40 /* VSEL0=1, VSEL1=0, VSEL2=0, VSEL3=0, ENB=1*/
44 /* VSEL0=0, VSEL1=0, VSEL2=0, VSEL3=1, ENB=1*/
51 if (reg0 != dev->reg[0]) {
52 ret = i2c_master_send(client, ®0, 1);
58 /* TMODE=0, TGATE=1 */
60 if (reg1 != dev->reg[1]) {
61 ret = i2c_master_send(client, ®1, 1);
67 usleep_range(1500, 50000);
70 dev_dbg(&client->dev, "failed=%d\n", ret);
74 static int a8293_probe(struct i2c_client *client,
75 const struct i2c_device_id *id)
77 struct a8293_dev *dev;
78 struct a8293_platform_data *pdata = client->dev.platform_data;
79 struct dvb_frontend *fe = pdata->dvb_frontend;
83 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
91 /* check if the SEC is there */
92 ret = i2c_master_recv(client, buf, 2);
96 /* override frontend ops */
97 fe->ops.set_voltage = a8293_set_voltage;
99 i2c_set_clientdata(client, dev);
101 dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n");
106 dev_dbg(&client->dev, "failed=%d\n", ret);
110 static int a8293_remove(struct i2c_client *client)
112 struct a8293_dev *dev = i2c_get_clientdata(client);
114 dev_dbg(&client->dev, "\n");
120 static const struct i2c_device_id a8293_id_table[] = {
124 MODULE_DEVICE_TABLE(i2c, a8293_id_table);
126 static struct i2c_driver a8293_driver = {
129 .suppress_bind_attrs = true,
131 .probe = a8293_probe,
132 .remove = a8293_remove,
133 .id_table = a8293_id_table,
136 module_i2c_driver(a8293_driver);
138 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
139 MODULE_DESCRIPTION("Allegro A8293 SEC driver");
140 MODULE_LICENSE("GPL");