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21#include "tda18212.h"
22#include <linux/regmap.h>
23
24struct tda18212_dev {
25 struct tda18212_config cfg;
26 struct i2c_client *client;
27 struct regmap *regmap;
28
29 u32 if_frequency;
30};
31
32static int tda18212_set_params(struct dvb_frontend *fe)
33{
34 struct tda18212_dev *dev = fe->tuner_priv;
35 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
36 int ret, i;
37 u32 if_khz;
38 u8 buf[9];
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
47 #define ATSC_VSB 8
48 #define ATSC_QAM 9
49 static const u8 bw_params[][3] = {
50
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 },
59 [ATSC_VSB] = { 0x7d, 0x20, 0x63 },
60 [ATSC_QAM] = { 0x7d, 0x20, 0x63 },
61 };
62
63 dev_dbg(&dev->client->dev,
64 "delivery_system=%d frequency=%d bandwidth_hz=%d\n",
65 c->delivery_system, c->frequency,
66 c->bandwidth_hz);
67
68 if (fe->ops.i2c_gate_ctrl)
69 fe->ops.i2c_gate_ctrl(fe, 1);
70
71 switch (c->delivery_system) {
72 case SYS_ATSC:
73 if_khz = dev->cfg.if_atsc_vsb;
74 i = ATSC_VSB;
75 break;
76 case SYS_DVBC_ANNEX_B:
77 if_khz = dev->cfg.if_atsc_qam;
78 i = ATSC_QAM;
79 break;
80 case SYS_DVBT:
81 switch (c->bandwidth_hz) {
82 case 6000000:
83 if_khz = dev->cfg.if_dvbt_6;
84 i = DVBT_6;
85 break;
86 case 7000000:
87 if_khz = dev->cfg.if_dvbt_7;
88 i = DVBT_7;
89 break;
90 case 8000000:
91 if_khz = dev->cfg.if_dvbt_8;
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:
102 if_khz = dev->cfg.if_dvbt2_6;
103 i = DVBT2_6;
104 break;
105 case 7000000:
106 if_khz = dev->cfg.if_dvbt2_7;
107 i = DVBT2_7;
108 break;
109 case 8000000:
110 if_khz = dev->cfg.if_dvbt2_8;
111 i = DVBT2_8;
112 break;
113 default:
114 ret = -EINVAL;
115 goto error;
116 }
117 break;
118 case SYS_DVBC_ANNEX_A:
119 case SYS_DVBC_ANNEX_C:
120 if_khz = dev->cfg.if_dvbc;
121 i = DVBC_8;
122 break;
123 default:
124 ret = -EINVAL;
125 goto error;
126 }
127
128 ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]);
129 if (ret)
130 goto error;
131
132 ret = regmap_write(dev->regmap, 0x06, 0x00);
133 if (ret)
134 goto error;
135
136 ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]);
137 if (ret)
138 goto error;
139
140 buf[0] = 0x02;
141 buf[1] = bw_params[i][1];
142 buf[2] = 0x03;
143 buf[3] = DIV_ROUND_CLOSEST(if_khz, 50);
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;
149 ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf));
150 if (ret)
151 goto error;
152
153
154 dev->if_frequency = buf[3] * 50 * 1000;
155
156exit:
157 if (fe->ops.i2c_gate_ctrl)
158 fe->ops.i2c_gate_ctrl(fe, 0);
159
160 return ret;
161
162error:
163 dev_dbg(&dev->client->dev, "failed=%d\n", ret);
164 goto exit;
165}
166
167static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
168{
169 struct tda18212_dev *dev = fe->tuner_priv;
170
171 *frequency = dev->if_frequency;
172
173 return 0;
174}
175
176static 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
185 .set_params = tda18212_set_params,
186 .get_if_frequency = tda18212_get_if_frequency,
187};
188
189static int tda18212_probe(struct i2c_client *client,
190 const struct i2c_device_id *id)
191{
192 struct tda18212_config *cfg = client->dev.platform_data;
193 struct dvb_frontend *fe = cfg->fe;
194 struct tda18212_dev *dev;
195 int ret;
196 unsigned int chip_id;
197 char *version;
198 static const struct regmap_config regmap_config = {
199 .reg_bits = 8,
200 .val_bits = 8,
201 };
202
203 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
204 if (dev == NULL) {
205 ret = -ENOMEM;
206 dev_err(&client->dev, "kzalloc() failed\n");
207 goto err;
208 }
209
210 memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config));
211 dev->client = client;
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 }
217
218
219 if (fe->ops.i2c_gate_ctrl)
220 fe->ops.i2c_gate_ctrl(fe, 1);
221
222 ret = regmap_read(dev->regmap, 0x00, &chip_id);
223 dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);
224
225 if (fe->ops.i2c_gate_ctrl)
226 fe->ops.i2c_gate_ctrl(fe, 0);
227
228 if (ret)
229 goto err;
230
231 switch (chip_id) {
232 case 0xc7:
233 version = "M";
234 break;
235 case 0x47:
236 version = "S";
237 break;
238 default:
239 ret = -ENODEV;
240 goto err;
241 }
242
243 dev_info(&dev->client->dev,
244 "NXP TDA18212HN/%s successfully identified\n", version);
245
246 fe->tuner_priv = dev;
247 memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
248 sizeof(struct dvb_tuner_ops));
249 i2c_set_clientdata(client, dev);
250
251 return 0;
252err:
253 dev_dbg(&client->dev, "failed=%d\n", ret);
254 kfree(dev);
255 return ret;
256}
257
258static int tda18212_remove(struct i2c_client *client)
259{
260 struct tda18212_dev *dev = i2c_get_clientdata(client);
261 struct dvb_frontend *fe = dev->cfg.fe;
262
263 dev_dbg(&client->dev, "\n");
264
265 memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
266 fe->tuner_priv = NULL;
267 kfree(dev);
268
269 return 0;
270}
271
272static const struct i2c_device_id tda18212_id[] = {
273 {"tda18212", 0},
274 {}
275};
276MODULE_DEVICE_TABLE(i2c, tda18212_id);
277
278static struct i2c_driver tda18212_driver = {
279 .driver = {
280 .name = "tda18212",
281 },
282 .probe = tda18212_probe,
283 .remove = tda18212_remove,
284 .id_table = tda18212_id,
285};
286
287module_i2c_driver(tda18212_driver);
288
289MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
290MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
291MODULE_LICENSE("GPL");
292
