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gerrit-public.fairphone.software / kernel / msm-4.9 / b8d67ab656288457a6728284d3a054544f629979 / . / drivers / media / tuners / m88ts2022.c
blob: 4d7f7e178a040796da1aaefcc734c6ed7dc3805d [file] [log] [blame]
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]1/*
2 * Montage M88TS2022 silicon tuner driver
3 *
4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]16 * Some calculations are taken from existing TS2020 driver.
17 */
18
19#include "m88ts2022_priv.h"
20
21/* write multiple registers */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]22static int m88ts2022_wr_regs(struct m88ts2022_dev *dev,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]23 u8 reg, const u8 *val, int len)
24{
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]25#define MAX_WR_LEN 3
26#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]27 int ret;
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]28 u8 buf[MAX_WR_XFER_LEN];
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]29 struct i2c_msg msg[1] = {
30 {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]31 .addr = dev->client->addr,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]32 .flags = 0,
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]33 .len = 1 + len,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]34 .buf = buf,
35 }
36 };
37
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]38 if (WARN_ON(len > MAX_WR_LEN))
39 return -EINVAL;
40
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]41 buf[0] = reg;
42 memcpy(&buf[1], val, len);
43
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]44 ret = i2c_transfer(dev->client->adapter, msg, 1);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]45 if (ret == 1) {
46 ret = 0;
47 } else {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]48 dev_warn(&dev->client->dev,
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]49 "i2c wr failed=%d reg=%02x len=%d\n",
50 ret, reg, len);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]51 ret = -EREMOTEIO;
52 }
53
54 return ret;
55}
56
57/* read multiple registers */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]58static int m88ts2022_rd_regs(struct m88ts2022_dev *dev, u8 reg,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]59 u8 *val, int len)
60{
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]61#define MAX_RD_LEN 1
62#define MAX_RD_XFER_LEN (MAX_RD_LEN)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]63 int ret;
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]64 u8 buf[MAX_RD_XFER_LEN];
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]65 struct i2c_msg msg[2] = {
66 {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]67 .addr = dev->client->addr,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]68 .flags = 0,
69 .len = 1,
70 .buf = &reg,
71 }, {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]72 .addr = dev->client->addr,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]73 .flags = I2C_M_RD,
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]74 .len = len,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]75 .buf = buf,
76 }
77 };
78
Antti Palosaari050ae822013-11-07 17:01:31 -0300[diff] [blame]79 if (WARN_ON(len > MAX_RD_LEN))
80 return -EINVAL;
81
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]82 ret = i2c_transfer(dev->client->adapter, msg, 2);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]83 if (ret == 2) {
84 memcpy(val, buf, len);
85 ret = 0;
86 } else {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]87 dev_warn(&dev->client->dev,
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]88 "i2c rd failed=%d reg=%02x len=%d\n",
89 ret, reg, len);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]90 ret = -EREMOTEIO;
91 }
92
93 return ret;
94}
95
96/* write single register */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]97static int m88ts2022_wr_reg(struct m88ts2022_dev *dev, u8 reg, u8 val)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]98{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]99 return m88ts2022_wr_regs(dev, reg, &val, 1);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]100}
101
102/* read single register */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]103static int m88ts2022_rd_reg(struct m88ts2022_dev *dev, u8 reg, u8 *val)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]104{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]105 return m88ts2022_rd_regs(dev, reg, val, 1);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]106}
107
108/* write single register with mask */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]109static int m88ts2022_wr_reg_mask(struct m88ts2022_dev *dev,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]110 u8 reg, u8 val, u8 mask)
111{
112 int ret;
113 u8 u8tmp;
114
115 /* no need for read if whole reg is written */
116 if (mask != 0xff) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]117 ret = m88ts2022_rd_regs(dev, reg, &u8tmp, 1);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]118 if (ret)
119 return ret;
120
121 val &= mask;
122 u8tmp &= ~mask;
123 val |= u8tmp;
124 }
125
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]126 return m88ts2022_wr_regs(dev, reg, &val, 1);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]127}
128
129static int m88ts2022_cmd(struct dvb_frontend *fe,
130 int op, int sleep, u8 reg, u8 mask, u8 val, u8 *reg_val)
131{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]132 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]133 int ret, i;
134 u8 u8tmp;
135 struct m88ts2022_reg_val reg_vals[] = {
136 {0x51, 0x1f - op},
137 {0x51, 0x1f},
138 {0x50, 0x00 + op},
139 {0x50, 0x00},
140 };
141
142 for (i = 0; i < 2; i++) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]143 dev_dbg(&dev->client->dev,
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]144 "i=%d op=%02x reg=%02x mask=%02x val=%02x\n",
145 i, op, reg, mask, val);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]146
147 for (i = 0; i < ARRAY_SIZE(reg_vals); i++) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]148 ret = m88ts2022_wr_reg(dev, reg_vals[i].reg,
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]149 reg_vals[i].val);
150 if (ret)
151 goto err;
152 }
153
154 usleep_range(sleep * 1000, sleep * 10000);
155
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]156 ret = m88ts2022_rd_reg(dev, reg, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]157 if (ret)
158 goto err;
159
160 if ((u8tmp & mask) != val)
161 break;
162 }
163
164 if (reg_val)
165 *reg_val = u8tmp;
166err:
167 return ret;
168}
169
170static int m88ts2022_set_params(struct dvb_frontend *fe)
171{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]172 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]173 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]174 int ret;
175 unsigned int frequency_khz, frequency_offset_khz, f_3db_hz;
176 unsigned int f_ref_khz, f_vco_khz, div_ref, div_out, pll_n, gdiv28;
177 u8 buf[3], u8tmp, cap_code, lpf_gm, lpf_mxdiv, div_max, div_min;
178 u16 u16tmp;
Antti Palosaari6380b972014-08-21 16:22:02 -0300[diff] [blame]179
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]180 dev_dbg(&dev->client->dev,
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]181 "frequency=%d symbol_rate=%d rolloff=%d\n",
182 c->frequency, c->symbol_rate, c->rolloff);
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]183 /*
184 * Integer-N PLL synthesizer
185 * kHz is used for all calculations to keep calculations within 32-bit
186 */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]187 f_ref_khz = DIV_ROUND_CLOSEST(dev->cfg.clock, 1000);
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]188 div_ref = DIV_ROUND_CLOSEST(f_ref_khz, 2000);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]189
190 if (c->symbol_rate < 5000000)
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]191 frequency_offset_khz = 3000; /* 3 MHz */
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]192 else
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]193 frequency_offset_khz = 0;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]194
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]195 frequency_khz = c->frequency + frequency_offset_khz;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]196
197 if (frequency_khz < 1103000) {
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]198 div_out = 4;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]199 u8tmp = 0x1b;
200 } else {
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]201 div_out = 2;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]202 u8tmp = 0x0b;
203 }
204
205 buf[0] = u8tmp;
206 buf[1] = 0x40;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]207 ret = m88ts2022_wr_regs(dev, 0x10, buf, 2);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]208 if (ret)
209 goto err;
210
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]211 f_vco_khz = frequency_khz * div_out;
212 pll_n = f_vco_khz * div_ref / f_ref_khz;
213 pll_n += pll_n % 2;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]214 dev->frequency_khz = pll_n * f_ref_khz / div_ref / div_out;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]215
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]216 if (pll_n < 4095)
217 u16tmp = pll_n - 1024;
218 else if (pll_n < 6143)
219 u16tmp = pll_n + 1024;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]220 else
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]221 u16tmp = pll_n + 3072;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]222
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]223 buf[0] = (u16tmp >> 8) & 0x3f;
224 buf[1] = (u16tmp >> 0) & 0xff;
225 buf[2] = div_ref - 8;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]226 ret = m88ts2022_wr_regs(dev, 0x01, buf, 3);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]227 if (ret)
228 goto err;
229
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]230 dev_dbg(&dev->client->dev,
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]231 "frequency=%u offset=%d f_vco_khz=%u pll_n=%u div_ref=%u div_out=%u\n",
232 dev->frequency_khz, dev->frequency_khz - c->frequency,
233 f_vco_khz, pll_n, div_ref, div_out);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]234
235 ret = m88ts2022_cmd(fe, 0x10, 5, 0x15, 0x40, 0x00, NULL);
236 if (ret)
237 goto err;
238
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]239 ret = m88ts2022_rd_reg(dev, 0x14, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]240 if (ret)
241 goto err;
242
243 u8tmp &= 0x7f;
244 if (u8tmp < 64) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]245 ret = m88ts2022_wr_reg_mask(dev, 0x10, 0x80, 0x80);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]246 if (ret)
247 goto err;
248
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]249 ret = m88ts2022_wr_reg(dev, 0x11, 0x6f);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]250 if (ret)
251 goto err;
252
253 ret = m88ts2022_cmd(fe, 0x10, 5, 0x15, 0x40, 0x00, NULL);
254 if (ret)
255 goto err;
256 }
257
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]258 ret = m88ts2022_rd_reg(dev, 0x14, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]259 if (ret)
260 goto err;
261
262 u8tmp &= 0x1f;
263 if (u8tmp > 19) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]264 ret = m88ts2022_wr_reg_mask(dev, 0x10, 0x00, 0x02);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]265 if (ret)
266 goto err;
267 }
268
269 ret = m88ts2022_cmd(fe, 0x08, 5, 0x3c, 0xff, 0x00, NULL);
270 if (ret)
271 goto err;
272
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]273 ret = m88ts2022_wr_reg(dev, 0x25, 0x00);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]274 if (ret)
275 goto err;
276
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]277 ret = m88ts2022_wr_reg(dev, 0x27, 0x70);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]278 if (ret)
279 goto err;
280
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]281 ret = m88ts2022_wr_reg(dev, 0x41, 0x09);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]282 if (ret)
283 goto err;
284
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]285 ret = m88ts2022_wr_reg(dev, 0x08, 0x0b);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]286 if (ret)
287 goto err;
288
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]289 /* filters */
290 gdiv28 = DIV_ROUND_CLOSEST(f_ref_khz * 1694U, 1000000U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]291
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]292 ret = m88ts2022_wr_reg(dev, 0x04, gdiv28);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]293 if (ret)
294 goto err;
295
296 ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp);
297 if (ret)
298 goto err;
299
300 cap_code = u8tmp & 0x3f;
301
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]302 ret = m88ts2022_wr_reg(dev, 0x41, 0x0d);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]303 if (ret)
304 goto err;
305
306 ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp);
307 if (ret)
308 goto err;
309
310 u8tmp &= 0x3f;
311 cap_code = (cap_code + u8tmp) / 2;
312 gdiv28 = gdiv28 * 207 / (cap_code * 2 + 151);
313 div_max = gdiv28 * 135 / 100;
314 div_min = gdiv28 * 78 / 100;
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]315 div_max = clamp_val(div_max, 0U, 63U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]316
Antti Palosaarif538e082014-08-21 14:02:27 -0300[diff] [blame]317 f_3db_hz = mult_frac(c->symbol_rate, 135, 200);
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]318 f_3db_hz += 2000000U + (frequency_offset_khz * 1000U);
319 f_3db_hz = clamp(f_3db_hz, 7000000U, 40000000U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]320
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]321#define LPF_COEFF 3200U
322 lpf_gm = DIV_ROUND_CLOSEST(f_3db_hz * gdiv28, LPF_COEFF * f_ref_khz);
323 lpf_gm = clamp_val(lpf_gm, 1U, 23U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]324
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]325 lpf_mxdiv = DIV_ROUND_CLOSEST(lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz);
326 if (lpf_mxdiv < div_min)
327 lpf_mxdiv = DIV_ROUND_CLOSEST(++lpf_gm * LPF_COEFF * f_ref_khz, f_3db_hz);
328 lpf_mxdiv = clamp_val(lpf_mxdiv, 0U, div_max);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]329
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]330 ret = m88ts2022_wr_reg(dev, 0x04, lpf_mxdiv);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]331 if (ret)
332 goto err;
333
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]334 ret = m88ts2022_wr_reg(dev, 0x06, lpf_gm);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]335 if (ret)
336 goto err;
337
338 ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp);
339 if (ret)
340 goto err;
341
342 cap_code = u8tmp & 0x3f;
343
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]344 ret = m88ts2022_wr_reg(dev, 0x41, 0x09);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]345 if (ret)
346 goto err;
347
348 ret = m88ts2022_cmd(fe, 0x04, 2, 0x26, 0xff, 0x00, &u8tmp);
349 if (ret)
350 goto err;
351
352 u8tmp &= 0x3f;
353 cap_code = (cap_code + u8tmp) / 2;
354
355 u8tmp = cap_code | 0x80;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]356 ret = m88ts2022_wr_reg(dev, 0x25, u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]357 if (ret)
358 goto err;
359
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]360 ret = m88ts2022_wr_reg(dev, 0x27, 0x30);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]361 if (ret)
362 goto err;
363
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]364 ret = m88ts2022_wr_reg(dev, 0x08, 0x09);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]365 if (ret)
366 goto err;
367
368 ret = m88ts2022_cmd(fe, 0x01, 20, 0x21, 0xff, 0x00, NULL);
369 if (ret)
370 goto err;
371err:
372 if (ret)
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]373 dev_dbg(&dev->client->dev, "failed=%d\n", ret);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]374
375 return ret;
376}
377
378static int m88ts2022_init(struct dvb_frontend *fe)
379{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]380 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]381 int ret, i;
382 u8 u8tmp;
383 static const struct m88ts2022_reg_val reg_vals[] = {
384 {0x7d, 0x9d},
385 {0x7c, 0x9a},
386 {0x7a, 0x76},
387 {0x3b, 0x01},
388 {0x63, 0x88},
389 {0x61, 0x85},
390 {0x22, 0x30},
391 {0x30, 0x40},
392 {0x20, 0x23},
393 {0x24, 0x02},
394 {0x12, 0xa0},
395 };
Antti Palosaari6380b972014-08-21 16:22:02 -0300[diff] [blame]396
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]397 dev_dbg(&dev->client->dev, "\n");
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]398
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]399 ret = m88ts2022_wr_reg(dev, 0x00, 0x01);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]400 if (ret)
401 goto err;
402
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]403 ret = m88ts2022_wr_reg(dev, 0x00, 0x03);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]404 if (ret)
405 goto err;
406
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]407 switch (dev->cfg.clock_out) {
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]408 case M88TS2022_CLOCK_OUT_DISABLED:
409 u8tmp = 0x60;
410 break;
411 case M88TS2022_CLOCK_OUT_ENABLED:
412 u8tmp = 0x70;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]413 ret = m88ts2022_wr_reg(dev, 0x05, dev->cfg.clock_out_div);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]414 if (ret)
415 goto err;
416 break;
417 case M88TS2022_CLOCK_OUT_ENABLED_XTALOUT:
418 u8tmp = 0x6c;
419 break;
420 default:
421 goto err;
422 }
423
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]424 ret = m88ts2022_wr_reg(dev, 0x42, u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]425 if (ret)
426 goto err;
427
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]428 if (dev->cfg.loop_through)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]429 u8tmp = 0xec;
430 else
431 u8tmp = 0x6c;
432
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]433 ret = m88ts2022_wr_reg(dev, 0x62, u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]434 if (ret)
435 goto err;
436
437 for (i = 0; i < ARRAY_SIZE(reg_vals); i++) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]438 ret = m88ts2022_wr_reg(dev, reg_vals[i].reg, reg_vals[i].val);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]439 if (ret)
440 goto err;
441 }
442err:
443 if (ret)
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]444 dev_dbg(&dev->client->dev, "failed=%d\n", ret);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]445 return ret;
446}
447
448static int m88ts2022_sleep(struct dvb_frontend *fe)
449{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]450 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]451 int ret;
Antti Palosaari6380b972014-08-21 16:22:02 -0300[diff] [blame]452
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]453 dev_dbg(&dev->client->dev, "\n");
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]454
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]455 ret = m88ts2022_wr_reg(dev, 0x00, 0x00);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]456 if (ret)
457 goto err;
458err:
459 if (ret)
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]460 dev_dbg(&dev->client->dev, "failed=%d\n", ret);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]461 return ret;
462}
463
464static int m88ts2022_get_frequency(struct dvb_frontend *fe, u32 *frequency)
465{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]466 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari6380b972014-08-21 16:22:02 -0300[diff] [blame]467
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]468 dev_dbg(&dev->client->dev, "\n");
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]469
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]470 *frequency = dev->frequency_khz;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]471 return 0;
472}
473
474static int m88ts2022_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
475{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]476 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari6380b972014-08-21 16:22:02 -0300[diff] [blame]477
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]478 dev_dbg(&dev->client->dev, "\n");
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]479
480 *frequency = 0; /* Zero-IF */
481 return 0;
482}
483
484static int m88ts2022_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
485{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]486 struct m88ts2022_dev *dev = fe->tuner_priv;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]487 int ret;
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]488 u8 u8tmp;
489 u16 gain, u16tmp;
490 unsigned int gain1, gain2, gain3;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]491
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]492 ret = m88ts2022_rd_reg(dev, 0x3d, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]493 if (ret)
494 goto err;
495
496 gain1 = (u8tmp >> 0) & 0x1f;
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]497 gain1 = clamp(gain1, 0U, 15U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]498
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]499 ret = m88ts2022_rd_reg(dev, 0x21, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]500 if (ret)
501 goto err;
502
503 gain2 = (u8tmp >> 0) & 0x1f;
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]504 gain2 = clamp(gain2, 2U, 16U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]505
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]506 ret = m88ts2022_rd_reg(dev, 0x66, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]507 if (ret)
508 goto err;
509
510 gain3 = (u8tmp >> 3) & 0x07;
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]511 gain3 = clamp(gain3, 0U, 6U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]512
513 gain = gain1 * 265 + gain2 * 338 + gain3 * 285;
514
515 /* scale value to 0x0000-0xffff */
516 u16tmp = (0xffff - gain);
Antti Palosaaric19314b2013-12-02 01:39:24 -0300[diff] [blame]517 u16tmp = clamp_val(u16tmp, 59000U, 61500U);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]518
519 *strength = (u16tmp - 59000) * 0xffff / (61500 - 59000);
520err:
521 if (ret)
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]522 dev_dbg(&dev->client->dev, "failed=%d\n", ret);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]523 return ret;
524}
525
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]526static const struct dvb_tuner_ops m88ts2022_tuner_ops = {
527 .info = {
528 .name = "Montage M88TS2022",
529 .frequency_min = 950000,
530 .frequency_max = 2150000,
531 },
532
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]533 .init = m88ts2022_init,
534 .sleep = m88ts2022_sleep,
535 .set_params = m88ts2022_set_params,
536
537 .get_frequency = m88ts2022_get_frequency,
538 .get_if_frequency = m88ts2022_get_if_frequency,
539 .get_rf_strength = m88ts2022_get_rf_strength,
540};
541
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]542static int m88ts2022_probe(struct i2c_client *client,
543 const struct i2c_device_id *id)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]544{
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]545 struct m88ts2022_config *cfg = client->dev.platform_data;
546 struct dvb_frontend *fe = cfg->fe;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]547 struct m88ts2022_dev *dev;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]548 int ret;
549 u8 chip_id, u8tmp;
550
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]551 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
552 if (!dev) {
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]553 ret = -ENOMEM;
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]554 dev_err(&client->dev, "kzalloc() failed\n");
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]555 goto err;
556 }
557
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]558 memcpy(&dev->cfg, cfg, sizeof(struct m88ts2022_config));
559 dev->client = client;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]560
561 /* check if the tuner is there */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]562 ret = m88ts2022_rd_reg(dev, 0x00, &u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]563 if (ret)
564 goto err;
565
566 if ((u8tmp & 0x03) == 0x00) {
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]567 ret = m88ts2022_wr_reg(dev, 0x00, 0x01);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]568 if (ret < 0)
569 goto err;
570
571 usleep_range(2000, 50000);
572 }
573
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]574 ret = m88ts2022_wr_reg(dev, 0x00, 0x03);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]575 if (ret)
576 goto err;
577
578 usleep_range(2000, 50000);
579
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]580 ret = m88ts2022_rd_reg(dev, 0x00, &chip_id);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]581 if (ret)
582 goto err;
583
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]584 dev_dbg(&dev->client->dev, "chip_id=%02x\n", chip_id);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]585
586 switch (chip_id) {
587 case 0xc3:
588 case 0x83:
589 break;
590 default:
591 goto err;
592 }
593
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]594 switch (dev->cfg.clock_out) {
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]595 case M88TS2022_CLOCK_OUT_DISABLED:
596 u8tmp = 0x60;
597 break;
598 case M88TS2022_CLOCK_OUT_ENABLED:
599 u8tmp = 0x70;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]600 ret = m88ts2022_wr_reg(dev, 0x05, dev->cfg.clock_out_div);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]601 if (ret)
602 goto err;
603 break;
604 case M88TS2022_CLOCK_OUT_ENABLED_XTALOUT:
605 u8tmp = 0x6c;
606 break;
607 default:
608 goto err;
609 }
610
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]611 ret = m88ts2022_wr_reg(dev, 0x42, u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]612 if (ret)
613 goto err;
614
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]615 if (dev->cfg.loop_through)
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]616 u8tmp = 0xec;
617 else
618 u8tmp = 0x6c;
619
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]620 ret = m88ts2022_wr_reg(dev, 0x62, u8tmp);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]621 if (ret)
622 goto err;
623
624 /* sleep */
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]625 ret = m88ts2022_wr_reg(dev, 0x00, 0x00);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]626 if (ret)
627 goto err;
628
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]629 dev_info(&dev->client->dev, "Montage M88TS2022 successfully identified\n");
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]630
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]631 fe->tuner_priv = dev;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]632 memcpy(&fe->ops.tuner_ops, &m88ts2022_tuner_ops,
633 sizeof(struct dvb_tuner_ops));
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]634
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]635 i2c_set_clientdata(client, dev);
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]636 return 0;
637err:
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]638 dev_dbg(&client->dev, "failed=%d\n", ret);
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]639 kfree(dev);
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]640 return ret;
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]641}
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]642
643static int m88ts2022_remove(struct i2c_client *client)
644{
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]645 struct m88ts2022_dev *dev = i2c_get_clientdata(client);
646 struct dvb_frontend *fe = dev->cfg.fe;
Antti Palosaari6380b972014-08-21 16:22:02 -0300[diff] [blame]647
Antti Palosaarib8d67ab2014-08-21 17:07:17 -0300[diff] [blame^]648 dev_dbg(&client->dev, "\n");
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]649
650 memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
651 fe->tuner_priv = NULL;
Antti Palosaarieb773df2014-08-21 16:27:55 -0300[diff] [blame]652 kfree(dev);
Antti Palosaarieafa2ad2013-12-02 18:38:41 -0300[diff] [blame]653
654 return 0;
655}
656
657static const struct i2c_device_id m88ts2022_id[] = {
658 {"m88ts2022", 0},
659 {}
660};
661MODULE_DEVICE_TABLE(i2c, m88ts2022_id);
662
663static struct i2c_driver m88ts2022_driver = {
664 .driver = {
665 .owner = THIS_MODULE,
666 .name = "m88ts2022",
667 },
668 .probe = m88ts2022_probe,
669 .remove = m88ts2022_remove,
670 .id_table = m88ts2022_id,
671};
672
673module_i2c_driver(m88ts2022_driver);
Antti Palosaari695efd02013-02-25 08:43:32 -0300[diff] [blame]674
675MODULE_DESCRIPTION("Montage M88TS2022 silicon tuner driver");
676MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
677MODULE_LICENSE("GPL");