4 * Sony Horus3A DVB-S/S2 tuner driver
6 * Copyright 2012 Sony Corporation
7 * Copyright (C) 2014 NetUP Inc.
8 * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
9 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
22 #include <linux/slab.h>
23 #include <linux/module.h>
24 #include <linux/dvb/frontend.h>
25 #include <linux/types.h>
27 #include "dvb_frontend.h"
29 #define MAX_WRITE_REGSIZE 5
40 struct i2c_adapter *i2c;
41 enum horus3a_state state;
43 int (*set_tuner)(void *, int);
46 static void horus3a_i2c_debug(struct horus3a_priv *priv,
47 u8 reg, u8 write, const u8 *data, u32 len)
49 dev_dbg(&priv->i2c->dev, "horus3a: I2C %s reg 0x%02x size %d\n",
50 (write == 0 ? "read" : "write"), reg, len);
51 print_hex_dump_bytes("horus3a: I2C data: ",
52 DUMP_PREFIX_OFFSET, data, len);
55 static int horus3a_write_regs(struct horus3a_priv *priv,
56 u8 reg, const u8 *data, u32 len)
59 u8 buf[MAX_WRITE_REGSIZE + 1];
60 struct i2c_msg msg[1] = {
62 .addr = priv->i2c_address,
69 if (len + 1 > sizeof(buf)) {
70 dev_warn(&priv->i2c->dev,"wr reg=%04x: len=%d is too big!\n",
75 horus3a_i2c_debug(priv, reg, 1, data, len);
77 memcpy(&buf[1], data, len);
78 ret = i2c_transfer(priv->i2c, msg, 1);
79 if (ret >= 0 && ret != 1)
82 dev_warn(&priv->i2c->dev,
83 "%s: i2c wr failed=%d reg=%02x len=%d\n",
84 KBUILD_MODNAME, ret, reg, len);
90 static int horus3a_write_reg(struct horus3a_priv *priv, u8 reg, u8 val)
92 u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
94 return horus3a_write_regs(priv, reg, &tmp, 1);
97 static int horus3a_enter_power_save(struct horus3a_priv *priv)
101 dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
102 if (priv->state == STATE_SLEEP)
104 /* IQ Generator disable */
105 horus3a_write_reg(priv, 0x2a, 0x79);
107 horus3a_write_reg(priv, 0x29, 0x70);
108 /* VCO disable preparation */
109 horus3a_write_reg(priv, 0x28, 0x3e);
110 /* VCO buffer disable */
111 horus3a_write_reg(priv, 0x2a, 0x19);
112 /* VCO calibration disable */
113 horus3a_write_reg(priv, 0x1c, 0x00);
114 /* Power save setting (xtal is not stopped) */
116 /* LNA is Disabled */
119 horus3a_write_regs(priv, 0x11, data, sizeof(data));
120 priv->state = STATE_SLEEP;
124 static int horus3a_leave_power_save(struct horus3a_priv *priv)
128 dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
129 if (priv->state == STATE_ACTIVE)
131 /* Leave power save */
133 /* LNA is Disabled */
136 horus3a_write_regs(priv, 0x11, data, sizeof(data));
137 /* VCO buffer enable */
138 horus3a_write_reg(priv, 0x2a, 0x79);
139 /* VCO calibration enable */
140 horus3a_write_reg(priv, 0x1c, 0xc0);
142 horus3a_write_reg(priv, 0x29, 0x71);
143 usleep_range(5000, 7000);
144 priv->state = STATE_ACTIVE;
148 static int horus3a_init(struct dvb_frontend *fe)
150 struct horus3a_priv *priv = fe->tuner_priv;
152 dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
156 static void horus3a_release(struct dvb_frontend *fe)
158 struct horus3a_priv *priv = fe->tuner_priv;
160 dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
161 kfree(fe->tuner_priv);
162 fe->tuner_priv = NULL;
165 static int horus3a_sleep(struct dvb_frontend *fe)
167 struct horus3a_priv *priv = fe->tuner_priv;
169 dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
170 horus3a_enter_power_save(priv);
174 static int horus3a_set_params(struct dvb_frontend *fe)
176 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
177 struct horus3a_priv *priv = fe->tuner_priv;
178 u32 frequency = p->frequency;
179 u32 symbol_rate = p->symbol_rate/1000;
188 dev_dbg(&priv->i2c->dev, "%s(): frequency %dkHz symbol_rate %dksps\n",
189 __func__, frequency, symbol_rate);
191 priv->set_tuner(priv->set_tuner_data, 0);
192 if (priv->state == STATE_SLEEP)
193 horus3a_leave_power_save(priv);
195 /* frequency should be X MHz (X : integer) */
196 frequency = DIV_ROUND_CLOSEST(frequency, 1000) * 1000;
197 if (frequency <= 1155000) {
204 /* Assumed that fREF == 1MHz (1000kHz) */
205 ms = DIV_ROUND_CLOSEST((frequency * mixdiv) / 2, 1000);
206 if (ms > 0x7FFF) { /* 15 bit */
207 dev_err(&priv->i2c->dev, "horus3a: invalid frequency %d\n",
211 if (frequency < 975000) {
212 /* F_CTL=11100 G_CTL=001 */
215 } else if (frequency < 1050000) {
216 /* F_CTL=11000 G_CTL=010 */
219 } else if (frequency < 1150000) {
220 /* F_CTL=10100 G_CTL=010 */
223 } else if (frequency < 1250000) {
224 /* F_CTL=10000 G_CTL=011 */
227 } else if (frequency < 1350000) {
228 /* F_CTL=01100 G_CTL=100 */
231 } else if (frequency < 1450000) {
232 /* F_CTL=01010 G_CTL=100 */
235 } else if (frequency < 1600000) {
236 /* F_CTL=00111 G_CTL=101 */
239 } else if (frequency < 1800000) {
240 /* F_CTL=00100 G_CTL=010 */
243 } else if (frequency < 2000000) {
244 /* F_CTL=00010 G_CTL=001 */
248 /* F_CTL=00000 G_CTL=000 */
252 /* LPF cutoff frequency setting */
253 if (p->delivery_system == SYS_DVBS) {
259 * fc_lpf = SR * (1 + rolloff) / 2 + SR / 2 =
260 * SR * 1.175 = SR * (47/40)
262 * fc_lpf = SR * (1 + rolloff) / 2 + 5 =
263 * SR * 0.675 + 5 = SR * (27/40) + 5
264 * NOTE: The result should be round up.
266 if (symbol_rate <= 4300)
268 else if (symbol_rate <= 10000)
269 fc_lpf = (u8)DIV_ROUND_UP(symbol_rate * 47, 40000);
271 fc_lpf = (u8)DIV_ROUND_UP(symbol_rate * 27, 40000) + 5;
272 /* 5 <= fc_lpf <= 36 */
275 } else if (p->delivery_system == SYS_DVBS2) {
280 * fc_lpf = SR * (1 + rolloff) / 2 + SR / 2
282 * fc_lpf = SR * (1 + rolloff) / 2 + 5
283 * NOTE: The result should be round up.
285 if (symbol_rate <= 4500)
287 else if (symbol_rate <= 10000)
288 fc_lpf = (u8)((symbol_rate * 11 + (10000-1)) / 10000);
290 fc_lpf = (u8)((symbol_rate * 3 + (5000-1)) / 5000 + 5);
291 /* 5 <= fc_lpf <= 36 is valid */
295 dev_err(&priv->i2c->dev,
296 "horus3a: invalid delivery system %d\n",
301 data[0] = (u8)((ms >> 7) & 0xFF);
302 data[1] = (u8)((ms << 1) & 0xFF);
305 data[4] = (u8)(mdiv << 7);
306 horus3a_write_regs(priv, 0x00, data, sizeof(data));
307 /* Write G_CTL, F_CTL */
308 horus3a_write_reg(priv, 0x09, (u8)((g_ctl << 5) | f_ctl));
309 /* Write LPF cutoff frequency */
310 horus3a_write_reg(priv, 0x37, (u8)(0x80 | (fc_lpf << 1)));
311 /* Start Calibration */
312 horus3a_write_reg(priv, 0x05, 0x80);
313 /* IQ Generator enable */
314 horus3a_write_reg(priv, 0x2a, 0x7b);
315 /* tuner stabilization time */
317 /* Store tuned frequency to the struct */
318 priv->frequency = ms * 2 * 1000 / mixdiv;
322 static int horus3a_get_frequency(struct dvb_frontend *fe, u32 *frequency)
324 struct horus3a_priv *priv = fe->tuner_priv;
326 *frequency = priv->frequency;
330 static const struct dvb_tuner_ops horus3a_tuner_ops = {
332 .name = "Sony Horus3a",
333 .frequency_min = 950000,
334 .frequency_max = 2150000,
335 .frequency_step = 1000,
337 .init = horus3a_init,
338 .release = horus3a_release,
339 .sleep = horus3a_sleep,
340 .set_params = horus3a_set_params,
341 .get_frequency = horus3a_get_frequency,
344 struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
345 const struct horus3a_config *config,
346 struct i2c_adapter *i2c)
349 struct horus3a_priv *priv = NULL;
351 priv = kzalloc(sizeof(struct horus3a_priv), GFP_KERNEL);
354 priv->i2c_address = (config->i2c_address >> 1);
356 priv->set_tuner_data = config->set_tuner_priv;
357 priv->set_tuner = config->set_tuner_callback;
359 if (fe->ops.i2c_gate_ctrl)
360 fe->ops.i2c_gate_ctrl(fe, 1);
362 /* wait 4ms after power on */
363 usleep_range(4000, 6000);
364 /* IQ Generator disable */
365 horus3a_write_reg(priv, 0x2a, 0x79);
366 /* REF_R = Xtal Frequency */
367 buf[0] = config->xtal_freq_mhz;
368 buf[1] = config->xtal_freq_mhz;
371 horus3a_write_regs(priv, 0x6, buf, 3);
372 /* IQ Out = Single Ended */
373 horus3a_write_reg(priv, 0x0a, 0x40);
374 switch (config->xtal_freq_mhz) {
386 dev_warn(&priv->i2c->dev,
387 "horus3a: invalid xtal frequency %dMHz\n",
388 config->xtal_freq_mhz);
392 horus3a_write_reg(priv, 0x0e, val);
393 horus3a_enter_power_save(priv);
394 usleep_range(3000, 5000);
396 if (fe->ops.i2c_gate_ctrl)
397 fe->ops.i2c_gate_ctrl(fe, 0);
399 memcpy(&fe->ops.tuner_ops, &horus3a_tuner_ops,
400 sizeof(struct dvb_tuner_ops));
401 fe->tuner_priv = priv;
402 dev_info(&priv->i2c->dev,
403 "Sony HORUS3A attached on addr=%x at I2C adapter %p\n",
404 priv->i2c_address, priv->i2c);
407 EXPORT_SYMBOL_GPL(horus3a_attach);
409 MODULE_DESCRIPTION("Sony HORUS3A satellite tuner driver");
410 MODULE_AUTHOR("Sergey Kozlov <serjk@netup.ru>");
411 MODULE_LICENSE("GPL");