Commit | Line | Data |
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26eb7045 AP |
1 | /* |
2 | * NXP TDA18212HN silicon tuner driver | |
3 | * | |
4 | * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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. | |
19 | */ | |
20 | ||
2b50763a | 21 | #include "tda18212.h" |
3b60b761 | 22 | #include <linux/regmap.h> |
f1baab87 | 23 | |
e4a42e18 | 24 | struct tda18212_dev { |
0e584cc2 AP |
25 | struct tda18212_config cfg; |
26 | struct i2c_client *client; | |
3b60b761 | 27 | struct regmap *regmap; |
835bf82c AP |
28 | |
29 | u32 if_frequency; | |
2b50763a JP |
30 | }; |
31 | ||
14d24d14 | 32 | static int tda18212_set_params(struct dvb_frontend *fe) |
26eb7045 | 33 | { |
e4a42e18 | 34 | struct tda18212_dev *dev = fe->tuner_priv; |
26eb7045 AP |
35 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
36 | int ret, i; | |
37 | u32 if_khz; | |
38 | u8 buf[9]; | |
b682ad1d AP |
39 | #define DVBT_6 0 |
40 | #define DVBT_7 1 | |
41 | #define DVBT_8 2 | |
42 | #define DVBT2_6 3 | |
43 | #define DVBT2_7 4 | |
44 | #define DVBT2_8 5 | |
45 | #define DVBC_6 6 | |
46 | #define DVBC_8 7 | |
6cff36b2 MCC |
47 | #define ATSC_VSB 8 |
48 | #define ATSC_QAM 9 | |
26eb7045 | 49 | static const u8 bw_params[][3] = { |
b682ad1d AP |
50 | /* reg: 0f 13 23 */ |
51 | [DVBT_6] = { 0xb3, 0x20, 0x03 }, | |
52 | [DVBT_7] = { 0xb3, 0x31, 0x01 }, | |
53 | [DVBT_8] = { 0xb3, 0x22, 0x01 }, | |
54 | [DVBT2_6] = { 0xbc, 0x20, 0x03 }, | |
55 | [DVBT2_7] = { 0xbc, 0x72, 0x03 }, | |
56 | [DVBT2_8] = { 0xbc, 0x22, 0x01 }, | |
57 | [DVBC_6] = { 0x92, 0x50, 0x03 }, | |
58 | [DVBC_8] = { 0x92, 0x53, 0x03 }, | |
6cff36b2 MCC |
59 | [ATSC_VSB] = { 0x7d, 0x20, 0x63 }, |
60 | [ATSC_QAM] = { 0x7d, 0x20, 0x63 }, | |
26eb7045 AP |
61 | }; |
62 | ||
e4a42e18 | 63 | dev_dbg(&dev->client->dev, |
bdb32655 AP |
64 | "delivery_system=%d frequency=%d bandwidth_hz=%d\n", |
65 | c->delivery_system, c->frequency, | |
d46ddbe4 | 66 | c->bandwidth_hz); |
26eb7045 AP |
67 | |
68 | if (fe->ops.i2c_gate_ctrl) | |
69 | fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ | |
70 | ||
71 | switch (c->delivery_system) { | |
6cff36b2 | 72 | case SYS_ATSC: |
e4a42e18 | 73 | if_khz = dev->cfg.if_atsc_vsb; |
6cff36b2 MCC |
74 | i = ATSC_VSB; |
75 | break; | |
76 | case SYS_DVBC_ANNEX_B: | |
e4a42e18 | 77 | if_khz = dev->cfg.if_atsc_qam; |
6cff36b2 MCC |
78 | i = ATSC_QAM; |
79 | break; | |
26eb7045 AP |
80 | case SYS_DVBT: |
81 | switch (c->bandwidth_hz) { | |
82 | case 6000000: | |
e4a42e18 | 83 | if_khz = dev->cfg.if_dvbt_6; |
b682ad1d | 84 | i = DVBT_6; |
26eb7045 AP |
85 | break; |
86 | case 7000000: | |
e4a42e18 | 87 | if_khz = dev->cfg.if_dvbt_7; |
b682ad1d | 88 | i = DVBT_7; |
26eb7045 AP |
89 | break; |
90 | case 8000000: | |
e4a42e18 | 91 | if_khz = dev->cfg.if_dvbt_8; |
b682ad1d AP |
92 | i = DVBT_8; |
93 | break; | |
94 | default: | |
95 | ret = -EINVAL; | |
96 | goto error; | |
97 | } | |
98 | break; | |
99 | case SYS_DVBT2: | |
100 | switch (c->bandwidth_hz) { | |
101 | case 6000000: | |
e4a42e18 | 102 | if_khz = dev->cfg.if_dvbt2_6; |
b682ad1d AP |
103 | i = DVBT2_6; |
104 | break; | |
105 | case 7000000: | |
e4a42e18 | 106 | if_khz = dev->cfg.if_dvbt2_7; |
b682ad1d AP |
107 | i = DVBT2_7; |
108 | break; | |
109 | case 8000000: | |
e4a42e18 | 110 | if_khz = dev->cfg.if_dvbt2_8; |
b682ad1d | 111 | i = DVBT2_8; |
26eb7045 AP |
112 | break; |
113 | default: | |
114 | ret = -EINVAL; | |
115 | goto error; | |
116 | } | |
117 | break; | |
0349471b MCC |
118 | case SYS_DVBC_ANNEX_A: |
119 | case SYS_DVBC_ANNEX_C: | |
e4a42e18 | 120 | if_khz = dev->cfg.if_dvbc; |
b682ad1d | 121 | i = DVBC_8; |
26eb7045 AP |
122 | break; |
123 | default: | |
124 | ret = -EINVAL; | |
125 | goto error; | |
126 | } | |
127 | ||
3b60b761 | 128 | ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]); |
26eb7045 AP |
129 | if (ret) |
130 | goto error; | |
131 | ||
3b60b761 | 132 | ret = regmap_write(dev->regmap, 0x06, 0x00); |
26eb7045 AP |
133 | if (ret) |
134 | goto error; | |
135 | ||
3b60b761 | 136 | ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]); |
26eb7045 AP |
137 | if (ret) |
138 | goto error; | |
139 | ||
140 | buf[0] = 0x02; | |
141 | buf[1] = bw_params[i][1]; | |
142 | buf[2] = 0x03; /* default value */ | |
8cffcc78 | 143 | buf[3] = DIV_ROUND_CLOSEST(if_khz, 50); |
26eb7045 AP |
144 | buf[4] = ((c->frequency / 1000) >> 16) & 0xff; |
145 | buf[5] = ((c->frequency / 1000) >> 8) & 0xff; | |
146 | buf[6] = ((c->frequency / 1000) >> 0) & 0xff; | |
147 | buf[7] = 0xc1; | |
148 | buf[8] = 0x01; | |
3b60b761 | 149 | ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf)); |
26eb7045 AP |
150 | if (ret) |
151 | goto error; | |
152 | ||
835bf82c | 153 | /* actual IF rounded as it is on register */ |
e4a42e18 | 154 | dev->if_frequency = buf[3] * 50 * 1000; |
835bf82c | 155 | |
26eb7045 AP |
156 | exit: |
157 | if (fe->ops.i2c_gate_ctrl) | |
158 | fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ | |
159 | ||
160 | return ret; | |
161 | ||
162 | error: | |
e4a42e18 | 163 | dev_dbg(&dev->client->dev, "failed=%d\n", ret); |
26eb7045 AP |
164 | goto exit; |
165 | } | |
166 | ||
835bf82c AP |
167 | static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) |
168 | { | |
e4a42e18 | 169 | struct tda18212_dev *dev = fe->tuner_priv; |
835bf82c | 170 | |
e4a42e18 | 171 | *frequency = dev->if_frequency; |
835bf82c AP |
172 | |
173 | return 0; | |
174 | } | |
175 | ||
26eb7045 AP |
176 | static const struct dvb_tuner_ops tda18212_tuner_ops = { |
177 | .info = { | |
178 | .name = "NXP TDA18212", | |
179 | ||
180 | .frequency_min = 48000000, | |
181 | .frequency_max = 864000000, | |
182 | .frequency_step = 1000, | |
183 | }, | |
184 | ||
26eb7045 | 185 | .set_params = tda18212_set_params, |
835bf82c | 186 | .get_if_frequency = tda18212_get_if_frequency, |
26eb7045 AP |
187 | }; |
188 | ||
0e584cc2 AP |
189 | static int tda18212_probe(struct i2c_client *client, |
190 | const struct i2c_device_id *id) | |
26eb7045 | 191 | { |
0e584cc2 AP |
192 | struct tda18212_config *cfg = client->dev.platform_data; |
193 | struct dvb_frontend *fe = cfg->fe; | |
e4a42e18 | 194 | struct tda18212_dev *dev; |
26eb7045 | 195 | int ret; |
3b60b761 | 196 | unsigned int chip_id; |
976bcb2f | 197 | char *version; |
3b60b761 AP |
198 | static const struct regmap_config regmap_config = { |
199 | .reg_bits = 8, | |
200 | .val_bits = 8, | |
201 | }; | |
26eb7045 | 202 | |
e4a42e18 AP |
203 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
204 | if (dev == NULL) { | |
0e584cc2 | 205 | ret = -ENOMEM; |
bdb32655 | 206 | dev_err(&client->dev, "kzalloc() failed\n"); |
0e584cc2 AP |
207 | goto err; |
208 | } | |
26eb7045 | 209 | |
e4a42e18 AP |
210 | memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config)); |
211 | dev->client = client; | |
3b60b761 AP |
212 | dev->regmap = devm_regmap_init_i2c(client, ®map_config); |
213 | if (IS_ERR(dev->regmap)) { | |
214 | ret = PTR_ERR(dev->regmap); | |
215 | goto err; | |
216 | } | |
26eb7045 | 217 | |
0e584cc2 | 218 | /* check if the tuner is there */ |
26eb7045 AP |
219 | if (fe->ops.i2c_gate_ctrl) |
220 | fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */ | |
221 | ||
3b60b761 | 222 | ret = regmap_read(dev->regmap, 0x00, &chip_id); |
e4a42e18 | 223 | dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id); |
26eb7045 AP |
224 | |
225 | if (fe->ops.i2c_gate_ctrl) | |
226 | fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */ | |
227 | ||
976bcb2f AP |
228 | if (ret) |
229 | goto err; | |
230 | ||
231 | switch (chip_id) { | |
232 | case 0xc7: | |
233 | version = "M"; /* master */ | |
234 | break; | |
235 | case 0x47: | |
236 | version = "S"; /* slave */ | |
237 | break; | |
238 | default: | |
0e584cc2 | 239 | ret = -ENODEV; |
976bcb2f | 240 | goto err; |
26eb7045 AP |
241 | } |
242 | ||
e4a42e18 | 243 | dev_info(&dev->client->dev, |
bdb32655 | 244 | "NXP TDA18212HN/%s successfully identified\n", version); |
26eb7045 | 245 | |
e4a42e18 | 246 | fe->tuner_priv = dev; |
26eb7045 | 247 | memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops, |
0e584cc2 | 248 | sizeof(struct dvb_tuner_ops)); |
e4a42e18 | 249 | i2c_set_clientdata(client, dev); |
26eb7045 | 250 | |
0e584cc2 | 251 | return 0; |
976bcb2f | 252 | err: |
bdb32655 | 253 | dev_dbg(&client->dev, "failed=%d\n", ret); |
e4a42e18 | 254 | kfree(dev); |
0e584cc2 | 255 | return ret; |
26eb7045 | 256 | } |
0e584cc2 AP |
257 | |
258 | static int tda18212_remove(struct i2c_client *client) | |
259 | { | |
e4a42e18 AP |
260 | struct tda18212_dev *dev = i2c_get_clientdata(client); |
261 | struct dvb_frontend *fe = dev->cfg.fe; | |
0e584cc2 | 262 | |
bdb32655 | 263 | dev_dbg(&client->dev, "\n"); |
0e584cc2 AP |
264 | |
265 | memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); | |
266 | fe->tuner_priv = NULL; | |
e4a42e18 | 267 | kfree(dev); |
0e584cc2 AP |
268 | |
269 | return 0; | |
270 | } | |
271 | ||
272 | static const struct i2c_device_id tda18212_id[] = { | |
273 | {"tda18212", 0}, | |
274 | {} | |
275 | }; | |
276 | MODULE_DEVICE_TABLE(i2c, tda18212_id); | |
277 | ||
278 | static struct i2c_driver tda18212_driver = { | |
279 | .driver = { | |
280 | .owner = THIS_MODULE, | |
281 | .name = "tda18212", | |
282 | }, | |
283 | .probe = tda18212_probe, | |
284 | .remove = tda18212_remove, | |
285 | .id_table = tda18212_id, | |
286 | }; | |
287 | ||
288 | module_i2c_driver(tda18212_driver); | |
26eb7045 AP |
289 | |
290 | MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver"); | |
291 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); | |
292 | MODULE_LICENSE("GPL"); |