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1 | /* | |
2 | * Driver for Quantek QT1010 silicon tuner | |
3 | * | |
4 | * Copyright (C) 2006 Antti Palosaari <crope@iki.fi> | |
5 | * Aapo Tahkola <aet@rasterburn.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | #include "qt1010.h" | |
18 | #include "qt1010_priv.h" | |
19 | ||
20 | /* read single register */ | |
21 | static int qt1010_readreg(struct qt1010_priv *priv, u8 reg, u8 *val) | |
22 | { | |
23 | struct i2c_msg msg[2] = { | |
24 | { .addr = priv->cfg->i2c_address, | |
25 | .flags = 0, .buf = ®, .len = 1 }, | |
26 | { .addr = priv->cfg->i2c_address, | |
27 | .flags = I2C_M_RD, .buf = val, .len = 1 }, | |
28 | }; | |
29 | ||
30 | if (i2c_transfer(priv->i2c, msg, 2) != 2) { | |
31 | dev_warn(&priv->i2c->dev, "%s: i2c rd failed reg=%02x\n", | |
32 | KBUILD_MODNAME, reg); | |
33 | return -EREMOTEIO; | |
34 | } | |
35 | return 0; | |
36 | } | |
37 | ||
38 | /* write single register */ | |
39 | static int qt1010_writereg(struct qt1010_priv *priv, u8 reg, u8 val) | |
40 | { | |
41 | u8 buf[2] = { reg, val }; | |
42 | struct i2c_msg msg = { .addr = priv->cfg->i2c_address, | |
43 | .flags = 0, .buf = buf, .len = 2 }; | |
44 | ||
45 | if (i2c_transfer(priv->i2c, &msg, 1) != 1) { | |
46 | dev_warn(&priv->i2c->dev, "%s: i2c wr failed reg=%02x\n", | |
47 | KBUILD_MODNAME, reg); | |
48 | return -EREMOTEIO; | |
49 | } | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static int qt1010_set_params(struct dvb_frontend *fe) | |
54 | { | |
55 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
56 | struct qt1010_priv *priv; | |
57 | int err; | |
58 | u32 freq, div, mod1, mod2; | |
59 | u8 i, tmpval, reg05; | |
60 | qt1010_i2c_oper_t rd[48] = { | |
61 | { QT1010_WR, 0x01, 0x80 }, | |
62 | { QT1010_WR, 0x02, 0x3f }, | |
63 | { QT1010_WR, 0x05, 0xff }, /* 02 c write */ | |
64 | { QT1010_WR, 0x06, 0x44 }, | |
65 | { QT1010_WR, 0x07, 0xff }, /* 04 c write */ | |
66 | { QT1010_WR, 0x08, 0x08 }, | |
67 | { QT1010_WR, 0x09, 0xff }, /* 06 c write */ | |
68 | { QT1010_WR, 0x0a, 0xff }, /* 07 c write */ | |
69 | { QT1010_WR, 0x0b, 0xff }, /* 08 c write */ | |
70 | { QT1010_WR, 0x0c, 0xe1 }, | |
71 | { QT1010_WR, 0x1a, 0xff }, /* 10 c write */ | |
72 | { QT1010_WR, 0x1b, 0x00 }, | |
73 | { QT1010_WR, 0x1c, 0x89 }, | |
74 | { QT1010_WR, 0x11, 0xff }, /* 13 c write */ | |
75 | { QT1010_WR, 0x12, 0xff }, /* 14 c write */ | |
76 | { QT1010_WR, 0x22, 0xff }, /* 15 c write */ | |
77 | { QT1010_WR, 0x1e, 0x00 }, | |
78 | { QT1010_WR, 0x1e, 0xd0 }, | |
79 | { QT1010_RD, 0x22, 0xff }, /* 16 c read */ | |
80 | { QT1010_WR, 0x1e, 0x00 }, | |
81 | { QT1010_RD, 0x05, 0xff }, /* 20 c read */ | |
82 | { QT1010_RD, 0x22, 0xff }, /* 21 c read */ | |
83 | { QT1010_WR, 0x23, 0xd0 }, | |
84 | { QT1010_WR, 0x1e, 0x00 }, | |
85 | { QT1010_WR, 0x1e, 0xe0 }, | |
86 | { QT1010_RD, 0x23, 0xff }, /* 25 c read */ | |
87 | { QT1010_RD, 0x23, 0xff }, /* 26 c read */ | |
88 | { QT1010_WR, 0x1e, 0x00 }, | |
89 | { QT1010_WR, 0x24, 0xd0 }, | |
90 | { QT1010_WR, 0x1e, 0x00 }, | |
91 | { QT1010_WR, 0x1e, 0xf0 }, | |
92 | { QT1010_RD, 0x24, 0xff }, /* 31 c read */ | |
93 | { QT1010_WR, 0x1e, 0x00 }, | |
94 | { QT1010_WR, 0x14, 0x7f }, | |
95 | { QT1010_WR, 0x15, 0x7f }, | |
96 | { QT1010_WR, 0x05, 0xff }, /* 35 c write */ | |
97 | { QT1010_WR, 0x06, 0x00 }, | |
98 | { QT1010_WR, 0x15, 0x1f }, | |
99 | { QT1010_WR, 0x16, 0xff }, | |
100 | { QT1010_WR, 0x18, 0xff }, | |
101 | { QT1010_WR, 0x1f, 0xff }, /* 40 c write */ | |
102 | { QT1010_WR, 0x20, 0xff }, /* 41 c write */ | |
103 | { QT1010_WR, 0x21, 0x53 }, | |
104 | { QT1010_WR, 0x25, 0xff }, /* 43 c write */ | |
105 | { QT1010_WR, 0x26, 0x15 }, | |
106 | { QT1010_WR, 0x00, 0xff }, /* 45 c write */ | |
107 | { QT1010_WR, 0x02, 0x00 }, | |
108 | { QT1010_WR, 0x01, 0x00 } | |
109 | }; | |
110 | ||
111 | #define FREQ1 32000000 /* 32 MHz */ | |
112 | #define FREQ2 4000000 /* 4 MHz Quartz oscillator in the stick? */ | |
113 | ||
114 | priv = fe->tuner_priv; | |
115 | freq = c->frequency; | |
116 | div = (freq + QT1010_OFFSET) / QT1010_STEP; | |
117 | freq = (div * QT1010_STEP) - QT1010_OFFSET; | |
118 | mod1 = (freq + QT1010_OFFSET) % FREQ1; | |
119 | mod2 = (freq + QT1010_OFFSET) % FREQ2; | |
120 | priv->frequency = freq; | |
121 | ||
122 | if (fe->ops.i2c_gate_ctrl) | |
123 | fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ | |
124 | ||
125 | /* reg 05 base value */ | |
126 | if (freq < 290000000) reg05 = 0x14; /* 290 MHz */ | |
127 | else if (freq < 610000000) reg05 = 0x34; /* 610 MHz */ | |
128 | else if (freq < 802000000) reg05 = 0x54; /* 802 MHz */ | |
129 | else reg05 = 0x74; | |
130 | ||
131 | /* 0x5 */ | |
132 | rd[2].val = reg05; | |
133 | ||
134 | /* 07 - set frequency: 32 MHz scale */ | |
135 | rd[4].val = (freq + QT1010_OFFSET) / FREQ1; | |
136 | ||
137 | /* 09 - changes every 8/24 MHz */ | |
138 | if (mod1 < 8000000) rd[6].val = 0x1d; | |
139 | else rd[6].val = 0x1c; | |
140 | ||
141 | /* 0a - set frequency: 4 MHz scale (max 28 MHz) */ | |
142 | if (mod1 < 1*FREQ2) rd[7].val = 0x09; /* +0 MHz */ | |
143 | else if (mod1 < 2*FREQ2) rd[7].val = 0x08; /* +4 MHz */ | |
144 | else if (mod1 < 3*FREQ2) rd[7].val = 0x0f; /* +8 MHz */ | |
145 | else if (mod1 < 4*FREQ2) rd[7].val = 0x0e; /* +12 MHz */ | |
146 | else if (mod1 < 5*FREQ2) rd[7].val = 0x0d; /* +16 MHz */ | |
147 | else if (mod1 < 6*FREQ2) rd[7].val = 0x0c; /* +20 MHz */ | |
148 | else if (mod1 < 7*FREQ2) rd[7].val = 0x0b; /* +24 MHz */ | |
149 | else rd[7].val = 0x0a; /* +28 MHz */ | |
150 | ||
151 | /* 0b - changes every 2/2 MHz */ | |
152 | if (mod2 < 2000000) rd[8].val = 0x45; | |
153 | else rd[8].val = 0x44; | |
154 | ||
155 | /* 1a - set frequency: 125 kHz scale (max 3875 kHz)*/ | |
156 | tmpval = 0x78; /* byte, overflows intentionally */ | |
157 | rd[10].val = tmpval-((mod2/QT1010_STEP)*0x08); | |
158 | ||
159 | /* 11 */ | |
160 | rd[13].val = 0xfd; /* TODO: correct value calculation */ | |
161 | ||
162 | /* 12 */ | |
163 | rd[14].val = 0x91; /* TODO: correct value calculation */ | |
164 | ||
165 | /* 22 */ | |
166 | if (freq < 450000000) rd[15].val = 0xd0; /* 450 MHz */ | |
167 | else if (freq < 482000000) rd[15].val = 0xd1; /* 482 MHz */ | |
168 | else if (freq < 514000000) rd[15].val = 0xd4; /* 514 MHz */ | |
169 | else if (freq < 546000000) rd[15].val = 0xd7; /* 546 MHz */ | |
170 | else if (freq < 610000000) rd[15].val = 0xda; /* 610 MHz */ | |
171 | else rd[15].val = 0xd0; | |
172 | ||
173 | /* 05 */ | |
174 | rd[35].val = (reg05 & 0xf0); | |
175 | ||
176 | /* 1f */ | |
177 | if (mod1 < 8000000) tmpval = 0x00; | |
178 | else if (mod1 < 12000000) tmpval = 0x01; | |
179 | else if (mod1 < 16000000) tmpval = 0x02; | |
180 | else if (mod1 < 24000000) tmpval = 0x03; | |
181 | else if (mod1 < 28000000) tmpval = 0x04; | |
182 | else tmpval = 0x05; | |
183 | rd[40].val = (priv->reg1f_init_val + 0x0e + tmpval); | |
184 | ||
185 | /* 20 */ | |
186 | if (mod1 < 8000000) tmpval = 0x00; | |
187 | else if (mod1 < 12000000) tmpval = 0x01; | |
188 | else if (mod1 < 20000000) tmpval = 0x02; | |
189 | else if (mod1 < 24000000) tmpval = 0x03; | |
190 | else if (mod1 < 28000000) tmpval = 0x04; | |
191 | else tmpval = 0x05; | |
192 | rd[41].val = (priv->reg20_init_val + 0x0d + tmpval); | |
193 | ||
194 | /* 25 */ | |
195 | rd[43].val = priv->reg25_init_val; | |
196 | ||
197 | /* 00 */ | |
198 | rd[45].val = 0x92; /* TODO: correct value calculation */ | |
199 | ||
200 | dev_dbg(&priv->i2c->dev, | |
201 | "%s: freq:%u 05:%02x 07:%02x 09:%02x 0a:%02x 0b:%02x " \ | |
202 | "1a:%02x 11:%02x 12:%02x 22:%02x 05:%02x 1f:%02x " \ | |
203 | "20:%02x 25:%02x 00:%02x\n", __func__, \ | |
204 | freq, rd[2].val, rd[4].val, rd[6].val, rd[7].val, \ | |
205 | rd[8].val, rd[10].val, rd[13].val, rd[14].val, \ | |
206 | rd[15].val, rd[35].val, rd[40].val, rd[41].val, \ | |
207 | rd[43].val, rd[45].val); | |
208 | ||
209 | for (i = 0; i < ARRAY_SIZE(rd); i++) { | |
210 | if (rd[i].oper == QT1010_WR) { | |
211 | err = qt1010_writereg(priv, rd[i].reg, rd[i].val); | |
212 | } else { /* read is required to proper locking */ | |
213 | err = qt1010_readreg(priv, rd[i].reg, &tmpval); | |
214 | } | |
215 | if (err) return err; | |
216 | } | |
217 | ||
218 | if (fe->ops.i2c_gate_ctrl) | |
219 | fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | static int qt1010_init_meas1(struct qt1010_priv *priv, | |
225 | u8 oper, u8 reg, u8 reg_init_val, u8 *retval) | |
226 | { | |
227 | u8 i, val1, val2; | |
228 | int err; | |
229 | ||
230 | qt1010_i2c_oper_t i2c_data[] = { | |
231 | { QT1010_WR, reg, reg_init_val }, | |
232 | { QT1010_WR, 0x1e, 0x00 }, | |
233 | { QT1010_WR, 0x1e, oper }, | |
234 | { QT1010_RD, reg, 0xff } | |
235 | }; | |
236 | ||
237 | for (i = 0; i < ARRAY_SIZE(i2c_data); i++) { | |
238 | if (i2c_data[i].oper == QT1010_WR) { | |
239 | err = qt1010_writereg(priv, i2c_data[i].reg, | |
240 | i2c_data[i].val); | |
241 | } else { | |
242 | err = qt1010_readreg(priv, i2c_data[i].reg, &val2); | |
243 | } | |
244 | if (err) return err; | |
245 | } | |
246 | ||
247 | do { | |
248 | val1 = val2; | |
249 | err = qt1010_readreg(priv, reg, &val2); | |
250 | if (err) return err; | |
251 | dev_dbg(&priv->i2c->dev, "%s: compare reg:%02x %02x %02x\n", | |
252 | __func__, reg, val1, val2); | |
253 | } while (val1 != val2); | |
254 | *retval = val1; | |
255 | ||
256 | return qt1010_writereg(priv, 0x1e, 0x00); | |
257 | } | |
258 | ||
259 | static int qt1010_init_meas2(struct qt1010_priv *priv, | |
260 | u8 reg_init_val, u8 *retval) | |
261 | { | |
262 | u8 i, val; | |
263 | int err; | |
264 | qt1010_i2c_oper_t i2c_data[] = { | |
265 | { QT1010_WR, 0x07, reg_init_val }, | |
266 | { QT1010_WR, 0x22, 0xd0 }, | |
267 | { QT1010_WR, 0x1e, 0x00 }, | |
268 | { QT1010_WR, 0x1e, 0xd0 }, | |
269 | { QT1010_RD, 0x22, 0xff }, | |
270 | { QT1010_WR, 0x1e, 0x00 }, | |
271 | { QT1010_WR, 0x22, 0xff } | |
272 | }; | |
273 | for (i = 0; i < ARRAY_SIZE(i2c_data); i++) { | |
274 | if (i2c_data[i].oper == QT1010_WR) { | |
275 | err = qt1010_writereg(priv, i2c_data[i].reg, | |
276 | i2c_data[i].val); | |
277 | } else { | |
278 | err = qt1010_readreg(priv, i2c_data[i].reg, &val); | |
279 | } | |
280 | if (err) return err; | |
281 | } | |
282 | *retval = val; | |
283 | return 0; | |
284 | } | |
285 | ||
286 | static int qt1010_init(struct dvb_frontend *fe) | |
287 | { | |
288 | struct qt1010_priv *priv = fe->tuner_priv; | |
289 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
290 | int err = 0; | |
291 | u8 i, tmpval, *valptr = NULL; | |
292 | ||
293 | static const qt1010_i2c_oper_t i2c_data[] = { | |
294 | { QT1010_WR, 0x01, 0x80 }, | |
295 | { QT1010_WR, 0x0d, 0x84 }, | |
296 | { QT1010_WR, 0x0e, 0xb7 }, | |
297 | { QT1010_WR, 0x2a, 0x23 }, | |
298 | { QT1010_WR, 0x2c, 0xdc }, | |
299 | { QT1010_M1, 0x25, 0x40 }, /* get reg 25 init value */ | |
300 | { QT1010_M1, 0x81, 0xff }, /* get reg 25 init value */ | |
301 | { QT1010_WR, 0x2b, 0x70 }, | |
302 | { QT1010_WR, 0x2a, 0x23 }, | |
303 | { QT1010_M1, 0x26, 0x08 }, | |
304 | { QT1010_M1, 0x82, 0xff }, | |
305 | { QT1010_WR, 0x05, 0x14 }, | |
306 | { QT1010_WR, 0x06, 0x44 }, | |
307 | { QT1010_WR, 0x07, 0x28 }, | |
308 | { QT1010_WR, 0x08, 0x0b }, | |
309 | { QT1010_WR, 0x11, 0xfd }, | |
310 | { QT1010_M1, 0x22, 0x0d }, | |
311 | { QT1010_M1, 0xd0, 0xff }, | |
312 | { QT1010_WR, 0x06, 0x40 }, | |
313 | { QT1010_WR, 0x16, 0xf0 }, | |
314 | { QT1010_WR, 0x02, 0x38 }, | |
315 | { QT1010_WR, 0x03, 0x18 }, | |
316 | { QT1010_WR, 0x20, 0xe0 }, | |
317 | { QT1010_M1, 0x1f, 0x20 }, /* get reg 1f init value */ | |
318 | { QT1010_M1, 0x84, 0xff }, /* get reg 1f init value */ | |
319 | { QT1010_RD, 0x20, 0x20 }, /* get reg 20 init value */ | |
320 | { QT1010_WR, 0x03, 0x19 }, | |
321 | { QT1010_WR, 0x02, 0x3f }, | |
322 | { QT1010_WR, 0x21, 0x53 }, | |
323 | { QT1010_RD, 0x21, 0xff }, | |
324 | { QT1010_WR, 0x11, 0xfd }, | |
325 | { QT1010_WR, 0x05, 0x34 }, | |
326 | { QT1010_WR, 0x06, 0x44 }, | |
327 | { QT1010_WR, 0x08, 0x08 } | |
328 | }; | |
329 | ||
330 | if (fe->ops.i2c_gate_ctrl) | |
331 | fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ | |
332 | ||
333 | for (i = 0; i < ARRAY_SIZE(i2c_data); i++) { | |
334 | switch (i2c_data[i].oper) { | |
335 | case QT1010_WR: | |
336 | err = qt1010_writereg(priv, i2c_data[i].reg, | |
337 | i2c_data[i].val); | |
338 | break; | |
339 | case QT1010_RD: | |
340 | if (i2c_data[i].val == 0x20) | |
341 | valptr = &priv->reg20_init_val; | |
342 | else | |
343 | valptr = &tmpval; | |
344 | err = qt1010_readreg(priv, i2c_data[i].reg, valptr); | |
345 | break; | |
346 | case QT1010_M1: | |
347 | if (i2c_data[i].val == 0x25) | |
348 | valptr = &priv->reg25_init_val; | |
349 | else if (i2c_data[i].val == 0x1f) | |
350 | valptr = &priv->reg1f_init_val; | |
351 | else | |
352 | valptr = &tmpval; | |
353 | ||
354 | BUG_ON(i >= ARRAY_SIZE(i2c_data) - 1); | |
355 | ||
356 | err = qt1010_init_meas1(priv, i2c_data[i+1].reg, | |
357 | i2c_data[i].reg, | |
358 | i2c_data[i].val, valptr); | |
359 | i++; | |
360 | break; | |
361 | } | |
362 | if (err) | |
363 | return err; | |
364 | } | |
365 | ||
366 | for (i = 0x31; i < 0x3a; i++) /* 0x31 - 0x39 */ | |
367 | if ((err = qt1010_init_meas2(priv, i, &tmpval))) | |
368 | return err; | |
369 | ||
370 | if (!c->frequency) | |
371 | c->frequency = 545000000; /* Sigmatek DVB-110 545000000 */ | |
372 | /* MSI Megasky 580 GL861 533000000 */ | |
373 | return qt1010_set_params(fe); | |
374 | } | |
375 | ||
376 | static void qt1010_release(struct dvb_frontend *fe) | |
377 | { | |
378 | kfree(fe->tuner_priv); | |
379 | fe->tuner_priv = NULL; | |
380 | } | |
381 | ||
382 | static int qt1010_get_frequency(struct dvb_frontend *fe, u32 *frequency) | |
383 | { | |
384 | struct qt1010_priv *priv = fe->tuner_priv; | |
385 | *frequency = priv->frequency; | |
386 | return 0; | |
387 | } | |
388 | ||
389 | static int qt1010_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) | |
390 | { | |
391 | *frequency = 36125000; | |
392 | return 0; | |
393 | } | |
394 | ||
395 | static const struct dvb_tuner_ops qt1010_tuner_ops = { | |
396 | .info = { | |
397 | .name = "Quantek QT1010", | |
398 | .frequency_min = QT1010_MIN_FREQ, | |
399 | .frequency_max = QT1010_MAX_FREQ, | |
400 | .frequency_step = QT1010_STEP, | |
401 | }, | |
402 | ||
403 | .release = qt1010_release, | |
404 | .init = qt1010_init, | |
405 | /* TODO: implement sleep */ | |
406 | ||
407 | .set_params = qt1010_set_params, | |
408 | .get_frequency = qt1010_get_frequency, | |
409 | .get_if_frequency = qt1010_get_if_frequency, | |
410 | }; | |
411 | ||
412 | struct dvb_frontend * qt1010_attach(struct dvb_frontend *fe, | |
413 | struct i2c_adapter *i2c, | |
414 | struct qt1010_config *cfg) | |
415 | { | |
416 | struct qt1010_priv *priv = NULL; | |
417 | u8 id; | |
418 | ||
419 | priv = kzalloc(sizeof(struct qt1010_priv), GFP_KERNEL); | |
420 | if (priv == NULL) | |
421 | return NULL; | |
422 | ||
423 | priv->cfg = cfg; | |
424 | priv->i2c = i2c; | |
425 | ||
426 | if (fe->ops.i2c_gate_ctrl) | |
427 | fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */ | |
428 | ||
429 | ||
430 | /* Try to detect tuner chip. Probably this is not correct register. */ | |
431 | if (qt1010_readreg(priv, 0x29, &id) != 0 || (id != 0x39)) { | |
432 | kfree(priv); | |
433 | return NULL; | |
434 | } | |
435 | ||
436 | if (fe->ops.i2c_gate_ctrl) | |
437 | fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */ | |
438 | ||
439 | dev_info(&priv->i2c->dev, | |
440 | "%s: Quantek QT1010 successfully identified\n", | |
441 | KBUILD_MODNAME); | |
442 | ||
443 | memcpy(&fe->ops.tuner_ops, &qt1010_tuner_ops, | |
444 | sizeof(struct dvb_tuner_ops)); | |
445 | ||
446 | fe->tuner_priv = priv; | |
447 | return fe; | |
448 | } | |
449 | EXPORT_SYMBOL(qt1010_attach); | |
450 | ||
451 | MODULE_DESCRIPTION("Quantek QT1010 silicon tuner driver"); | |
452 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); | |
453 | MODULE_AUTHOR("Aapo Tahkola <aet@rasterburn.org>"); | |
454 | MODULE_VERSION("0.1"); | |
455 | MODULE_LICENSE("GPL"); |