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.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 struct i2c_client *client;
28 static int a8293_set_voltage(struct dvb_frontend *fe,
29 enum fe_sec_voltage fe_sec_voltage)
31 struct a8293_dev *dev = fe->sec_priv;
32 struct i2c_client *client = dev->client;
36 dev_dbg(&client->dev, "fe_sec_voltage=%d\n", fe_sec_voltage);
38 switch (fe_sec_voltage) {
44 /* VSEL0=1, VSEL1=0, VSEL2=0, VSEL3=0, ENB=1*/
48 /* VSEL0=0, VSEL1=0, VSEL2=0, VSEL3=1, ENB=1*/
55 if (reg0 != dev->reg[0]) {
56 ret = i2c_master_send(client, ®0, 1);
62 /* TMODE=0, TGATE=1 */
64 if (reg1 != dev->reg[1]) {
65 ret = i2c_master_send(client, ®1, 1);
71 usleep_range(1500, 50000);
74 dev_dbg(&client->dev, "failed=%d\n", ret);
78 static int a8293_probe(struct i2c_client *client,
79 const struct i2c_device_id *id)
81 struct a8293_dev *dev;
82 struct a8293_platform_data *pdata = client->dev.platform_data;
83 struct dvb_frontend *fe = pdata->dvb_frontend;
87 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
95 /* check if the SEC is there */
96 ret = i2c_master_recv(client, buf, 2);
100 /* override frontend ops */
101 fe->ops.set_voltage = a8293_set_voltage;
103 i2c_set_clientdata(client, dev);
105 dev_info(&client->dev, "Allegro A8293 SEC successfully attached\n");
110 dev_dbg(&client->dev, "failed=%d\n", ret);
114 static int a8293_remove(struct i2c_client *client)
116 struct a8293_dev *dev = i2c_get_clientdata(client);
118 dev_dbg(&client->dev, "\n");
124 static const struct i2c_device_id a8293_id_table[] = {
128 MODULE_DEVICE_TABLE(i2c, a8293_id_table);
130 static struct i2c_driver a8293_driver = {
132 .owner = THIS_MODULE,
134 .suppress_bind_attrs = true,
136 .probe = a8293_probe,
137 .remove = a8293_remove,
138 .id_table = a8293_id_table,
141 module_i2c_driver(a8293_driver);
143 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
144 MODULE_DESCRIPTION("Allegro A8293 SEC driver");
145 MODULE_LICENSE("GPL");