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8#include "tda18212.h"
9#include <linux/regmap.h>
10
11struct tda18212_dev {
12 struct tda18212_config cfg;
13 struct i2c_client *client;
14 struct regmap *regmap;
15
16 u32 if_frequency;
17};
18
19static int tda18212_set_params(struct dvb_frontend *fe)
20{
21 struct tda18212_dev *dev = fe->tuner_priv;
22 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
23 int ret, i;
24 u32 if_khz;
25 u8 buf[9];
26 #define DVBT_6 0
27 #define DVBT_7 1
28 #define DVBT_8 2
29 #define DVBT2_6 3
30 #define DVBT2_7 4
31 #define DVBT2_8 5
32 #define DVBC_6 6
33 #define DVBC_8 7
34 #define ATSC_VSB 8
35 #define ATSC_QAM 9
36 static const u8 bw_params[][3] = {
37
38 [DVBT_6] = { 0xb3, 0x20, 0x03 },
39 [DVBT_7] = { 0xb3, 0x31, 0x01 },
40 [DVBT_8] = { 0xb3, 0x22, 0x01 },
41 [DVBT2_6] = { 0xbc, 0x20, 0x03 },
42 [DVBT2_7] = { 0xbc, 0x72, 0x03 },
43 [DVBT2_8] = { 0xbc, 0x22, 0x01 },
44 [DVBC_6] = { 0x92, 0x50, 0x03 },
45 [DVBC_8] = { 0x92, 0x53, 0x03 },
46 [ATSC_VSB] = { 0x7d, 0x20, 0x63 },
47 [ATSC_QAM] = { 0x7d, 0x20, 0x63 },
48 };
49
50 dev_dbg(&dev->client->dev,
51 "delivery_system=%d frequency=%d bandwidth_hz=%d\n",
52 c->delivery_system, c->frequency,
53 c->bandwidth_hz);
54
55 if (fe->ops.i2c_gate_ctrl)
56 fe->ops.i2c_gate_ctrl(fe, 1);
57
58 switch (c->delivery_system) {
59 case SYS_ATSC:
60 if_khz = dev->cfg.if_atsc_vsb;
61 i = ATSC_VSB;
62 break;
63 case SYS_DVBC_ANNEX_B:
64 if_khz = dev->cfg.if_atsc_qam;
65 i = ATSC_QAM;
66 break;
67 case SYS_DVBT:
68 switch (c->bandwidth_hz) {
69 case 6000000:
70 if_khz = dev->cfg.if_dvbt_6;
71 i = DVBT_6;
72 break;
73 case 7000000:
74 if_khz = dev->cfg.if_dvbt_7;
75 i = DVBT_7;
76 break;
77 case 8000000:
78 if_khz = dev->cfg.if_dvbt_8;
79 i = DVBT_8;
80 break;
81 default:
82 ret = -EINVAL;
83 goto error;
84 }
85 break;
86 case SYS_DVBT2:
87 switch (c->bandwidth_hz) {
88 case 6000000:
89 if_khz = dev->cfg.if_dvbt2_6;
90 i = DVBT2_6;
91 break;
92 case 7000000:
93 if_khz = dev->cfg.if_dvbt2_7;
94 i = DVBT2_7;
95 break;
96 case 8000000:
97 if_khz = dev->cfg.if_dvbt2_8;
98 i = DVBT2_8;
99 break;
100 default:
101 ret = -EINVAL;
102 goto error;
103 }
104 break;
105 case SYS_DVBC_ANNEX_A:
106 case SYS_DVBC_ANNEX_C:
107 if_khz = dev->cfg.if_dvbc;
108 i = DVBC_8;
109 break;
110 default:
111 ret = -EINVAL;
112 goto error;
113 }
114
115 ret = regmap_write(dev->regmap, 0x23, bw_params[i][2]);
116 if (ret)
117 goto error;
118
119 ret = regmap_write(dev->regmap, 0x06, 0x00);
120 if (ret)
121 goto error;
122
123 ret = regmap_write(dev->regmap, 0x0f, bw_params[i][0]);
124 if (ret)
125 goto error;
126
127 buf[0] = 0x02;
128 buf[1] = bw_params[i][1];
129 buf[2] = 0x03;
130 buf[3] = DIV_ROUND_CLOSEST(if_khz, 50);
131 buf[4] = ((c->frequency / 1000) >> 16) & 0xff;
132 buf[5] = ((c->frequency / 1000) >> 8) & 0xff;
133 buf[6] = ((c->frequency / 1000) >> 0) & 0xff;
134 buf[7] = 0xc1;
135 buf[8] = 0x01;
136 ret = regmap_bulk_write(dev->regmap, 0x12, buf, sizeof(buf));
137 if (ret)
138 goto error;
139
140
141 dev->if_frequency = buf[3] * 50 * 1000;
142
143exit:
144 if (fe->ops.i2c_gate_ctrl)
145 fe->ops.i2c_gate_ctrl(fe, 0);
146
147 return ret;
148
149error:
150 dev_dbg(&dev->client->dev, "failed=%d\n", ret);
151 goto exit;
152}
153
154static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
155{
156 struct tda18212_dev *dev = fe->tuner_priv;
157
158 *frequency = dev->if_frequency;
159
160 return 0;
161}
162
163static const struct dvb_tuner_ops tda18212_tuner_ops = {
164 .info = {
165 .name = "NXP TDA18212",
166
167 .frequency_min_hz = 48 * MHz,
168 .frequency_max_hz = 864 * MHz,
169 .frequency_step_hz = 1 * kHz,
170 },
171
172 .set_params = tda18212_set_params,
173 .get_if_frequency = tda18212_get_if_frequency,
174};
175
176static int tda18212_probe(struct i2c_client *client,
177 const struct i2c_device_id *id)
178{
179 struct tda18212_config *cfg = client->dev.platform_data;
180 struct dvb_frontend *fe = cfg->fe;
181 struct tda18212_dev *dev;
182 int ret;
183 unsigned int chip_id;
184 char *version;
185 static const struct regmap_config regmap_config = {
186 .reg_bits = 8,
187 .val_bits = 8,
188 };
189
190 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
191 if (dev == NULL) {
192 ret = -ENOMEM;
193 dev_err(&client->dev, "kzalloc() failed\n");
194 goto err;
195 }
196
197 memcpy(&dev->cfg, cfg, sizeof(struct tda18212_config));
198 dev->client = client;
199 dev->regmap = devm_regmap_init_i2c(client, ®map_config);
200 if (IS_ERR(dev->regmap)) {
201 ret = PTR_ERR(dev->regmap);
202 goto err;
203 }
204
205
206 if (fe->ops.i2c_gate_ctrl)
207 fe->ops.i2c_gate_ctrl(fe, 1);
208
209 ret = regmap_read(dev->regmap, 0x00, &chip_id);
210 dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);
211
212 if (fe->ops.i2c_gate_ctrl)
213 fe->ops.i2c_gate_ctrl(fe, 0);
214
215 if (ret)
216 goto err;
217
218 switch (chip_id) {
219 case 0xc7:
220 version = "M";
221 break;
222 case 0x47:
223 version = "S";
224 break;
225 default:
226 ret = -ENODEV;
227 goto err;
228 }
229
230 dev_info(&dev->client->dev,
231 "NXP TDA18212HN/%s successfully identified\n", version);
232
233 fe->tuner_priv = dev;
234 memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
235 sizeof(struct dvb_tuner_ops));
236 i2c_set_clientdata(client, dev);
237
238 return 0;
239err:
240 dev_dbg(&client->dev, "failed=%d\n", ret);
241 kfree(dev);
242 return ret;
243}
244
245static int tda18212_remove(struct i2c_client *client)
246{
247 struct tda18212_dev *dev = i2c_get_clientdata(client);
248 struct dvb_frontend *fe = dev->cfg.fe;
249
250 dev_dbg(&client->dev, "\n");
251
252 memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
253 fe->tuner_priv = NULL;
254 kfree(dev);
255
256 return 0;
257}
258
259static const struct i2c_device_id tda18212_id[] = {
260 {"tda18212", 0},
261 {}
262};
263MODULE_DEVICE_TABLE(i2c, tda18212_id);
264
265static struct i2c_driver tda18212_driver = {
266 .driver = {
267 .name = "tda18212",
268 },
269 .probe = tda18212_probe,
270 .remove = tda18212_remove,
271 .id_table = tda18212_id,
272};
273
274module_i2c_driver(tda18212_driver);
275
276MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
277MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
278MODULE_LICENSE("GPL");
279
