2 * Fitipower FC0011 tuner driver
4 * Copyright (C) 2012 Michael Buesch <m@bues.ch>
6 * Derived from FC0012 tuner driver:
7 * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
28 FC11_REG_XINHI, /* XIN high 8 bit */
29 FC11_REG_XINLO, /* XIN low 8 bit */
30 FC11_REG_VCO, /* VCO */
31 FC11_REG_VCOSEL, /* VCO select */
32 FC11_REG_7, /* Unknown tuner reg 7 */
33 FC11_REG_8, /* Unknown tuner reg 8 */
35 FC11_REG_10, /* Unknown tuner reg 10 */
36 FC11_REG_11, /* Unknown tuner reg 11 */
38 FC11_REG_RCCAL, /* RC calibrate */
39 FC11_REG_VCOCAL, /* VCO calibrate */
41 FC11_REG_16, /* Unknown tuner reg 16 */
44 FC11_NR_REGS, /* Number of registers */
47 enum FC11_REG_VCOSEL_bits {
48 FC11_VCOSEL_2 = 0x08, /* VCO select 2 */
49 FC11_VCOSEL_1 = 0x10, /* VCO select 1 */
50 FC11_VCOSEL_CLKOUT = 0x20, /* Fix clock out */
51 FC11_VCOSEL_BW7M = 0x40, /* 7MHz bw */
52 FC11_VCOSEL_BW6M = 0x80, /* 6MHz bw */
55 enum FC11_REG_RCCAL_bits {
56 FC11_RCCAL_FORCE = 0x10, /* force */
59 enum FC11_REG_VCOCAL_bits {
60 FC11_VCOCAL_RUN = 0, /* VCO calibration run */
61 FC11_VCOCAL_VALUEMASK = 0x3F, /* VCO calibration value mask */
62 FC11_VCOCAL_OK = 0x40, /* VCO calibration Ok */
63 FC11_VCOCAL_RESET = 0x80, /* VCO calibration reset */
68 struct i2c_adapter *i2c;
76 static int fc0011_writereg(struct fc0011_priv *priv, u8 reg, u8 val)
78 u8 buf[2] = { reg, val };
79 struct i2c_msg msg = { .addr = priv->addr,
80 .flags = 0, .buf = buf, .len = 2 };
82 if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
83 dev_err(&priv->i2c->dev,
84 "I2C write reg failed, reg: %02x, val: %02x\n",
92 static int fc0011_readreg(struct fc0011_priv *priv, u8 reg, u8 *val)
95 struct i2c_msg msg[2] = {
97 .flags = 0, .buf = ®, .len = 1 },
99 .flags = I2C_M_RD, .buf = val ? : &dummy, .len = 1 },
102 if (i2c_transfer(priv->i2c, msg, 2) != 2) {
103 dev_err(&priv->i2c->dev,
104 "I2C read failed, reg: %02x\n", reg);
111 static void fc0011_release(struct dvb_frontend *fe)
113 kfree(fe->tuner_priv);
114 fe->tuner_priv = NULL;
117 static int fc0011_init(struct dvb_frontend *fe)
119 struct fc0011_priv *priv = fe->tuner_priv;
122 if (WARN_ON(!fe->callback))
125 err = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
126 FC0011_FE_CALLBACK_POWER, priv->addr);
128 dev_err(&priv->i2c->dev, "Power-on callback failed\n");
131 err = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
132 FC0011_FE_CALLBACK_RESET, priv->addr);
134 dev_err(&priv->i2c->dev, "Reset callback failed\n");
141 /* Initiate VCO calibration */
142 static int fc0011_vcocal_trigger(struct fc0011_priv *priv)
146 err = fc0011_writereg(priv, FC11_REG_VCOCAL, FC11_VCOCAL_RESET);
149 err = fc0011_writereg(priv, FC11_REG_VCOCAL, FC11_VCOCAL_RUN);
156 /* Read VCO calibration value */
157 static int fc0011_vcocal_read(struct fc0011_priv *priv, u8 *value)
161 err = fc0011_writereg(priv, FC11_REG_VCOCAL, FC11_VCOCAL_RUN);
164 usleep_range(10000, 20000);
165 err = fc0011_readreg(priv, FC11_REG_VCOCAL, value);
172 static int fc0011_set_params(struct dvb_frontend *fe)
174 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
175 struct fc0011_priv *priv = fe->tuner_priv;
177 unsigned int i, vco_retries;
178 u32 freq = p->frequency / 1000;
179 u32 bandwidth = p->bandwidth_hz / 1000;
180 u32 fvco, xin, frac, xdiv, xdivr;
181 u8 fa, fp, vco_sel, vco_cal;
182 u8 regs[FC11_NR_REGS] = { };
184 regs[FC11_REG_7] = 0x0F;
185 regs[FC11_REG_8] = 0x3E;
186 regs[FC11_REG_10] = 0xB8;
187 regs[FC11_REG_11] = 0x80;
188 regs[FC11_REG_RCCAL] = 0x04;
189 err = fc0011_writereg(priv, FC11_REG_7, regs[FC11_REG_7]);
190 err |= fc0011_writereg(priv, FC11_REG_8, regs[FC11_REG_8]);
191 err |= fc0011_writereg(priv, FC11_REG_10, regs[FC11_REG_10]);
192 err |= fc0011_writereg(priv, FC11_REG_11, regs[FC11_REG_11]);
193 err |= fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]);
197 /* Set VCO freq and VCO div */
200 regs[FC11_REG_VCO] = 0x82;
201 } else if (freq < 108000) {
203 regs[FC11_REG_VCO] = 0x42;
204 } else if (freq < 216000) {
206 regs[FC11_REG_VCO] = 0x22;
207 } else if (freq < 432000) {
209 regs[FC11_REG_VCO] = 0x12;
212 regs[FC11_REG_VCO] = 0x0A;
215 /* Calc XIN. The PLL reference frequency is 18 MHz. */
217 WARN_ON(xdiv > 0xFF);
218 frac = fvco - xdiv * 18000;
219 frac = (frac << 15) / 18000;
225 xin = clamp_t(u32, frac, 512, 65024);
226 regs[FC11_REG_XINHI] = xin >> 8;
227 regs[FC11_REG_XINLO] = xin;
231 if (fvco - xdiv * 18000 >= 9000)
232 xdivr += 1; /* round */
244 dev_warn(&priv->i2c->dev,
245 "fa %02X >= fp %02X, but trying to continue\n",
246 (unsigned int)(u8)fa, (unsigned int)(u8)fp);
248 regs[FC11_REG_FA] = fa;
249 regs[FC11_REG_FP] = fp;
251 /* Select bandwidth */
256 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_BW7M;
259 dev_warn(&priv->i2c->dev, "Unsupported bandwidth %u kHz. Using 6000 kHz.\n",
264 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_BW6M;
269 if (fvco < 2320000) {
271 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
272 } else if (fvco < 3080000) {
274 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
275 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
278 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
279 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_2;
282 /* Fix for low freqs */
284 regs[FC11_REG_FA] = 0x6;
285 regs[FC11_REG_FP] = 0x11;
289 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_CLKOUT;
291 /* Write the cached registers */
292 for (i = FC11_REG_FA; i <= FC11_REG_VCOSEL; i++) {
293 err = fc0011_writereg(priv, i, regs[i]);
298 /* VCO calibration */
299 err = fc0011_vcocal_trigger(priv);
302 err = fc0011_vcocal_read(priv, &vco_cal);
306 while (!(vco_cal & FC11_VCOCAL_OK) && vco_retries < 3) {
307 /* Reset the tuner and try again */
308 err = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
309 FC0011_FE_CALLBACK_RESET, priv->addr);
311 dev_err(&priv->i2c->dev, "Failed to reset tuner\n");
314 /* Reinit tuner config */
316 for (i = FC11_REG_FA; i <= FC11_REG_VCOSEL; i++)
317 err |= fc0011_writereg(priv, i, regs[i]);
318 err |= fc0011_writereg(priv, FC11_REG_7, regs[FC11_REG_7]);
319 err |= fc0011_writereg(priv, FC11_REG_8, regs[FC11_REG_8]);
320 err |= fc0011_writereg(priv, FC11_REG_10, regs[FC11_REG_10]);
321 err |= fc0011_writereg(priv, FC11_REG_11, regs[FC11_REG_11]);
322 err |= fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]);
325 /* VCO calibration */
326 err = fc0011_vcocal_trigger(priv);
329 err = fc0011_vcocal_read(priv, &vco_cal);
334 if (!(vco_cal & FC11_VCOCAL_OK)) {
335 dev_err(&priv->i2c->dev,
336 "Failed to read VCO calibration value (got %02X)\n",
337 (unsigned int)vco_cal);
340 vco_cal &= FC11_VCOCAL_VALUEMASK;
347 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
348 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
349 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
350 regs[FC11_REG_VCOSEL]);
353 err = fc0011_vcocal_trigger(priv);
357 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
358 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
359 regs[FC11_REG_VCOSEL]);
366 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
367 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_2;
368 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
369 regs[FC11_REG_VCOSEL]);
372 err = fc0011_vcocal_trigger(priv);
375 } else if (vco_cal <= 48) {
376 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
377 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
378 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
379 regs[FC11_REG_VCOSEL]);
383 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
384 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
385 regs[FC11_REG_VCOSEL]);
388 err = fc0011_vcocal_trigger(priv);
395 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
396 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
397 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
398 regs[FC11_REG_VCOSEL]);
401 err = fc0011_vcocal_trigger(priv);
405 regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
406 regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_2;
407 err = fc0011_writereg(priv, FC11_REG_VCOSEL,
408 regs[FC11_REG_VCOSEL]);
414 err = fc0011_vcocal_read(priv, NULL);
417 usleep_range(10000, 50000);
419 err = fc0011_readreg(priv, FC11_REG_RCCAL, ®s[FC11_REG_RCCAL]);
422 regs[FC11_REG_RCCAL] |= FC11_RCCAL_FORCE;
423 err = fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]);
426 regs[FC11_REG_16] = 0xB;
427 err = fc0011_writereg(priv, FC11_REG_16, regs[FC11_REG_16]);
431 dev_dbg(&priv->i2c->dev, "Tuned to fa=%02X fp=%02X xin=%02X%02X vco=%02X vcosel=%02X vcocal=%02X(%u) bw=%u\n",
432 (unsigned int)regs[FC11_REG_FA],
433 (unsigned int)regs[FC11_REG_FP],
434 (unsigned int)regs[FC11_REG_XINHI],
435 (unsigned int)regs[FC11_REG_XINLO],
436 (unsigned int)regs[FC11_REG_VCO],
437 (unsigned int)regs[FC11_REG_VCOSEL],
438 (unsigned int)vco_cal, vco_retries,
439 (unsigned int)bandwidth);
441 priv->frequency = p->frequency;
442 priv->bandwidth = p->bandwidth_hz;
447 static int fc0011_get_frequency(struct dvb_frontend *fe, u32 *frequency)
449 struct fc0011_priv *priv = fe->tuner_priv;
451 *frequency = priv->frequency;
456 static int fc0011_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
463 static int fc0011_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
465 struct fc0011_priv *priv = fe->tuner_priv;
467 *bandwidth = priv->bandwidth;
472 static const struct dvb_tuner_ops fc0011_tuner_ops = {
474 .name = "Fitipower FC0011",
476 .frequency_min = 45000000,
477 .frequency_max = 1000000000,
480 .release = fc0011_release,
483 .set_params = fc0011_set_params,
485 .get_frequency = fc0011_get_frequency,
486 .get_if_frequency = fc0011_get_if_frequency,
487 .get_bandwidth = fc0011_get_bandwidth,
490 struct dvb_frontend *fc0011_attach(struct dvb_frontend *fe,
491 struct i2c_adapter *i2c,
492 const struct fc0011_config *config)
494 struct fc0011_priv *priv;
496 priv = kzalloc(sizeof(struct fc0011_priv), GFP_KERNEL);
501 priv->addr = config->i2c_address;
503 fe->tuner_priv = priv;
504 fe->ops.tuner_ops = fc0011_tuner_ops;
506 dev_info(&priv->i2c->dev, "Fitipower FC0011 tuner attached\n");
510 EXPORT_SYMBOL(fc0011_attach);
512 MODULE_DESCRIPTION("Fitipower FC0011 silicon tuner driver");
513 MODULE_AUTHOR("Michael Buesch <m@bues.ch>");
514 MODULE_LICENSE("GPL");