1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Infineon TUA9001 silicon tuner driver
4 *
5 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
6 */
7
8 #include "tua9001_priv.h"
9
tua9001_init(struct dvb_frontend * fe)10 static int tua9001_init(struct dvb_frontend *fe)
11 {
12 struct tua9001_dev *dev = fe->tuner_priv;
13 struct i2c_client *client = dev->client;
14 int ret, i;
15 static const struct tua9001_reg_val data[] = {
16 {0x1e, 0x6512},
17 {0x25, 0xb888},
18 {0x39, 0x5460},
19 {0x3b, 0x00c0},
20 {0x3a, 0xf000},
21 {0x08, 0x0000},
22 {0x32, 0x0030},
23 {0x41, 0x703a},
24 {0x40, 0x1c78},
25 {0x2c, 0x1c00},
26 {0x36, 0xc013},
27 {0x37, 0x6f18},
28 {0x27, 0x0008},
29 {0x2a, 0x0001},
30 {0x34, 0x0a40},
31 };
32
33 dev_dbg(&client->dev, "\n");
34
35 if (fe->callback) {
36 ret = fe->callback(client->adapter,
37 DVB_FRONTEND_COMPONENT_TUNER,
38 TUA9001_CMD_RESETN, 0);
39 if (ret)
40 goto err;
41 }
42
43 for (i = 0; i < ARRAY_SIZE(data); i++) {
44 ret = regmap_write(dev->regmap, data[i].reg, data[i].val);
45 if (ret)
46 goto err;
47 }
48 return 0;
49 err:
50 dev_dbg(&client->dev, "failed=%d\n", ret);
51 return ret;
52 }
53
tua9001_sleep(struct dvb_frontend * fe)54 static int tua9001_sleep(struct dvb_frontend *fe)
55 {
56 struct tua9001_dev *dev = fe->tuner_priv;
57 struct i2c_client *client = dev->client;
58 int ret;
59
60 dev_dbg(&client->dev, "\n");
61
62 if (fe->callback) {
63 ret = fe->callback(client->adapter,
64 DVB_FRONTEND_COMPONENT_TUNER,
65 TUA9001_CMD_RESETN, 1);
66 if (ret)
67 goto err;
68 }
69 return 0;
70 err:
71 dev_dbg(&client->dev, "failed=%d\n", ret);
72 return ret;
73 }
74
tua9001_set_params(struct dvb_frontend * fe)75 static int tua9001_set_params(struct dvb_frontend *fe)
76 {
77 struct tua9001_dev *dev = fe->tuner_priv;
78 struct i2c_client *client = dev->client;
79 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
80 int ret, i;
81 u16 val;
82 struct tua9001_reg_val data[2];
83
84 dev_dbg(&client->dev,
85 "delivery_system=%u frequency=%u bandwidth_hz=%u\n",
86 c->delivery_system, c->frequency, c->bandwidth_hz);
87
88 switch (c->delivery_system) {
89 case SYS_DVBT:
90 switch (c->bandwidth_hz) {
91 case 8000000:
92 val = 0x0000;
93 break;
94 case 7000000:
95 val = 0x1000;
96 break;
97 case 6000000:
98 val = 0x2000;
99 break;
100 case 5000000:
101 val = 0x3000;
102 break;
103 default:
104 ret = -EINVAL;
105 goto err;
106 }
107 break;
108 default:
109 ret = -EINVAL;
110 goto err;
111 }
112
113 data[0].reg = 0x04;
114 data[0].val = val;
115 data[1].reg = 0x1f;
116 data[1].val = div_u64((u64) (c->frequency - 150000000) * 48, 1000000);
117
118 if (fe->callback) {
119 ret = fe->callback(client->adapter,
120 DVB_FRONTEND_COMPONENT_TUNER,
121 TUA9001_CMD_RXEN, 0);
122 if (ret)
123 goto err;
124 }
125
126 for (i = 0; i < ARRAY_SIZE(data); i++) {
127 ret = regmap_write(dev->regmap, data[i].reg, data[i].val);
128 if (ret)
129 goto err;
130 }
131
132 if (fe->callback) {
133 ret = fe->callback(client->adapter,
134 DVB_FRONTEND_COMPONENT_TUNER,
135 TUA9001_CMD_RXEN, 1);
136 if (ret)
137 goto err;
138 }
139 return 0;
140 err:
141 dev_dbg(&client->dev, "failed=%d\n", ret);
142 return ret;
143 }
144
tua9001_get_if_frequency(struct dvb_frontend * fe,u32 * frequency)145 static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
146 {
147 struct tua9001_dev *dev = fe->tuner_priv;
148 struct i2c_client *client = dev->client;
149
150 dev_dbg(&client->dev, "\n");
151
152 *frequency = 0; /* Zero-IF */
153 return 0;
154 }
155
156 static const struct dvb_tuner_ops tua9001_tuner_ops = {
157 .info = {
158 .name = "Infineon TUA9001",
159 .frequency_min_hz = 170 * MHz,
160 .frequency_max_hz = 862 * MHz,
161 },
162
163 .init = tua9001_init,
164 .sleep = tua9001_sleep,
165 .set_params = tua9001_set_params,
166
167 .get_if_frequency = tua9001_get_if_frequency,
168 };
169
tua9001_probe(struct i2c_client * client)170 static int tua9001_probe(struct i2c_client *client)
171 {
172 struct tua9001_dev *dev;
173 struct tua9001_platform_data *pdata = client->dev.platform_data;
174 struct dvb_frontend *fe = pdata->dvb_frontend;
175 int ret;
176 static const struct regmap_config regmap_config = {
177 .reg_bits = 8,
178 .val_bits = 16,
179 };
180
181 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
182 if (!dev) {
183 ret = -ENOMEM;
184 goto err;
185 }
186
187 dev->fe = pdata->dvb_frontend;
188 dev->client = client;
189 dev->regmap = devm_regmap_init_i2c(client, ®map_config);
190 if (IS_ERR(dev->regmap)) {
191 ret = PTR_ERR(dev->regmap);
192 goto err_kfree;
193 }
194
195 if (fe->callback) {
196 ret = fe->callback(client->adapter,
197 DVB_FRONTEND_COMPONENT_TUNER,
198 TUA9001_CMD_CEN, 1);
199 if (ret)
200 goto err_kfree;
201
202 ret = fe->callback(client->adapter,
203 DVB_FRONTEND_COMPONENT_TUNER,
204 TUA9001_CMD_RXEN, 0);
205 if (ret)
206 goto err_kfree;
207
208 ret = fe->callback(client->adapter,
209 DVB_FRONTEND_COMPONENT_TUNER,
210 TUA9001_CMD_RESETN, 1);
211 if (ret)
212 goto err_kfree;
213 }
214
215 fe->tuner_priv = dev;
216 memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
217 sizeof(struct dvb_tuner_ops));
218 i2c_set_clientdata(client, dev);
219
220 dev_info(&client->dev, "Infineon TUA9001 successfully attached\n");
221 return 0;
222 err_kfree:
223 kfree(dev);
224 err:
225 dev_dbg(&client->dev, "failed=%d\n", ret);
226 return ret;
227 }
228
tua9001_remove(struct i2c_client * client)229 static void tua9001_remove(struct i2c_client *client)
230 {
231 struct tua9001_dev *dev = i2c_get_clientdata(client);
232 struct dvb_frontend *fe = dev->fe;
233 int ret;
234
235 dev_dbg(&client->dev, "\n");
236
237 if (fe->callback) {
238 ret = fe->callback(client->adapter,
239 DVB_FRONTEND_COMPONENT_TUNER,
240 TUA9001_CMD_CEN, 0);
241 if (ret)
242 dev_err(&client->dev, "Tuner disable failed (%pe)\n", ERR_PTR(ret));
243 }
244 kfree(dev);
245 }
246
247 static const struct i2c_device_id tua9001_id_table[] = {
248 { "tua9001" },
249 {}
250 };
251 MODULE_DEVICE_TABLE(i2c, tua9001_id_table);
252
253 static struct i2c_driver tua9001_driver = {
254 .driver = {
255 .name = "tua9001",
256 .suppress_bind_attrs = true,
257 },
258 .probe = tua9001_probe,
259 .remove = tua9001_remove,
260 .id_table = tua9001_id_table,
261 };
262
263 module_i2c_driver(tua9001_driver);
264
265 MODULE_DESCRIPTION("Infineon TUA9001 silicon tuner driver");
266 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
267 MODULE_LICENSE("GPL");
268