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27cfc85e AP |
1 | /* |
2 | * Sony CXD2820R demodulator driver | |
3 | * | |
4 | * Copyright (C) 2010 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 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | */ | |
20 | ||
21 | ||
9ac51c5e SK |
22 | #include "cxd2820r_priv.h" |
23 | ||
f311f68a | 24 | int cxd2820r_set_frontend_c(struct dvb_frontend *fe) |
27cfc85e AP |
25 | { |
26 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
27 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
28 | int ret, i; | |
29 | u8 buf[2]; | |
fda23faa | 30 | u32 if_freq; |
27cfc85e AP |
31 | u16 if_ctl; |
32 | u64 num; | |
33 | struct reg_val_mask tab[] = { | |
34 | { 0x00080, 0x01, 0xff }, | |
35 | { 0x00081, 0x05, 0xff }, | |
36 | { 0x00085, 0x07, 0xff }, | |
37 | { 0x00088, 0x01, 0xff }, | |
38 | ||
39 | { 0x00082, 0x20, 0x60 }, | |
40 | { 0x1016a, 0x48, 0xff }, | |
41 | { 0x100a5, 0x00, 0x01 }, | |
42 | { 0x10020, 0x06, 0x07 }, | |
43 | { 0x10059, 0x50, 0xff }, | |
44 | { 0x10087, 0x0c, 0x3c }, | |
45 | { 0x1008b, 0x07, 0xff }, | |
46 | { 0x1001f, priv->cfg.if_agc_polarity << 7, 0x80 }, | |
47 | { 0x10070, priv->cfg.ts_mode, 0xff }, | |
48 | }; | |
49 | ||
75aeafc9 AP |
50 | dev_dbg(&priv->i2c->dev, "%s: frequency=%d symbol_rate=%d\n", __func__, |
51 | c->frequency, c->symbol_rate); | |
27cfc85e | 52 | |
27cfc85e AP |
53 | /* program tuner */ |
54 | if (fe->ops.tuner_ops.set_params) | |
14d24d14 | 55 | fe->ops.tuner_ops.set_params(fe); |
27cfc85e | 56 | |
0349471b | 57 | if (priv->delivery_system != SYS_DVBC_ANNEX_A) { |
27cfc85e AP |
58 | for (i = 0; i < ARRAY_SIZE(tab); i++) { |
59 | ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, | |
60 | tab[i].val, tab[i].mask); | |
61 | if (ret) | |
62 | goto error; | |
63 | } | |
64 | } | |
65 | ||
0349471b | 66 | priv->delivery_system = SYS_DVBC_ANNEX_A; |
27cfc85e AP |
67 | priv->ber_running = 0; /* tune stops BER counter */ |
68 | ||
fda23faa AP |
69 | /* program IF frequency */ |
70 | if (fe->ops.tuner_ops.get_if_frequency) { | |
71 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq); | |
72 | if (ret) | |
73 | goto error; | |
74 | } else | |
75 | if_freq = 0; | |
76 | ||
75aeafc9 | 77 | dev_dbg(&priv->i2c->dev, "%s: if_freq=%d\n", __func__, if_freq); |
fda23faa AP |
78 | |
79 | num = if_freq / 1000; /* Hz => kHz */ | |
27cfc85e AP |
80 | num *= 0x4000; |
81 | if_ctl = cxd2820r_div_u64_round_closest(num, 41000); | |
82 | buf[0] = (if_ctl >> 8) & 0x3f; | |
83 | buf[1] = (if_ctl >> 0) & 0xff; | |
84 | ||
85 | ret = cxd2820r_wr_regs(priv, 0x10042, buf, 2); | |
86 | if (ret) | |
87 | goto error; | |
88 | ||
89 | ret = cxd2820r_wr_reg(priv, 0x000ff, 0x08); | |
90 | if (ret) | |
91 | goto error; | |
92 | ||
93 | ret = cxd2820r_wr_reg(priv, 0x000fe, 0x01); | |
94 | if (ret) | |
95 | goto error; | |
96 | ||
97 | return ret; | |
98 | error: | |
75aeafc9 | 99 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
100 | return ret; |
101 | } | |
102 | ||
f311f68a | 103 | int cxd2820r_get_frontend_c(struct dvb_frontend *fe) |
27cfc85e AP |
104 | { |
105 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
106 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
107 | int ret; | |
108 | u8 buf[2]; | |
109 | ||
110 | ret = cxd2820r_rd_regs(priv, 0x1001a, buf, 2); | |
111 | if (ret) | |
112 | goto error; | |
113 | ||
114 | c->symbol_rate = 2500 * ((buf[0] & 0x0f) << 8 | buf[1]); | |
115 | ||
116 | ret = cxd2820r_rd_reg(priv, 0x10019, &buf[0]); | |
117 | if (ret) | |
118 | goto error; | |
119 | ||
cba5d0b2 | 120 | switch ((buf[0] >> 0) & 0x07) { |
27cfc85e AP |
121 | case 0: |
122 | c->modulation = QAM_16; | |
123 | break; | |
124 | case 1: | |
125 | c->modulation = QAM_32; | |
126 | break; | |
127 | case 2: | |
128 | c->modulation = QAM_64; | |
129 | break; | |
130 | case 3: | |
131 | c->modulation = QAM_128; | |
132 | break; | |
133 | case 4: | |
134 | c->modulation = QAM_256; | |
135 | break; | |
136 | } | |
137 | ||
138 | switch ((buf[0] >> 7) & 0x01) { | |
139 | case 0: | |
140 | c->inversion = INVERSION_OFF; | |
141 | break; | |
142 | case 1: | |
143 | c->inversion = INVERSION_ON; | |
144 | break; | |
145 | } | |
146 | ||
147 | return ret; | |
148 | error: | |
75aeafc9 | 149 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
150 | return ret; |
151 | } | |
152 | ||
9ac51c5e | 153 | int cxd2820r_read_ber_c(struct dvb_frontend *fe, u32 *ber) |
27cfc85e AP |
154 | { |
155 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
156 | int ret; | |
157 | u8 buf[3], start_ber = 0; | |
158 | *ber = 0; | |
159 | ||
160 | if (priv->ber_running) { | |
161 | ret = cxd2820r_rd_regs(priv, 0x10076, buf, sizeof(buf)); | |
162 | if (ret) | |
163 | goto error; | |
164 | ||
165 | if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) { | |
166 | *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0]; | |
167 | start_ber = 1; | |
168 | } | |
169 | } else { | |
170 | priv->ber_running = 1; | |
171 | start_ber = 1; | |
172 | } | |
173 | ||
174 | if (start_ber) { | |
175 | /* (re)start BER */ | |
176 | ret = cxd2820r_wr_reg(priv, 0x10079, 0x01); | |
177 | if (ret) | |
178 | goto error; | |
179 | } | |
180 | ||
181 | return ret; | |
182 | error: | |
75aeafc9 | 183 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
184 | return ret; |
185 | } | |
186 | ||
9ac51c5e | 187 | int cxd2820r_read_signal_strength_c(struct dvb_frontend *fe, |
27cfc85e AP |
188 | u16 *strength) |
189 | { | |
190 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
191 | int ret; | |
192 | u8 buf[2]; | |
193 | u16 tmp; | |
194 | ||
195 | ret = cxd2820r_rd_regs(priv, 0x10049, buf, sizeof(buf)); | |
196 | if (ret) | |
197 | goto error; | |
198 | ||
199 | tmp = (buf[0] & 0x03) << 8 | buf[1]; | |
200 | tmp = (~tmp & 0x03ff); | |
201 | ||
202 | if (tmp == 512) | |
203 | /* ~no signal */ | |
204 | tmp = 0; | |
205 | else if (tmp > 350) | |
206 | tmp = 350; | |
207 | ||
208 | /* scale value to 0x0000-0xffff */ | |
209 | *strength = tmp * 0xffff / (350-0); | |
210 | ||
211 | return ret; | |
212 | error: | |
75aeafc9 | 213 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
214 | return ret; |
215 | } | |
216 | ||
9ac51c5e | 217 | int cxd2820r_read_snr_c(struct dvb_frontend *fe, u16 *snr) |
27cfc85e AP |
218 | { |
219 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
220 | int ret; | |
221 | u8 tmp; | |
222 | unsigned int A, B; | |
223 | /* report SNR in dB * 10 */ | |
224 | ||
225 | ret = cxd2820r_rd_reg(priv, 0x10019, &tmp); | |
226 | if (ret) | |
227 | goto error; | |
228 | ||
229 | if (((tmp >> 0) & 0x03) % 2) { | |
230 | A = 875; | |
231 | B = 650; | |
232 | } else { | |
233 | A = 950; | |
234 | B = 760; | |
235 | } | |
236 | ||
237 | ret = cxd2820r_rd_reg(priv, 0x1004d, &tmp); | |
238 | if (ret) | |
239 | goto error; | |
240 | ||
241 | #define CXD2820R_LOG2_E_24 24204406 /* log2(e) << 24 */ | |
242 | if (tmp) | |
243 | *snr = A * (intlog2(B / tmp) >> 5) / (CXD2820R_LOG2_E_24 >> 5) | |
244 | / 10; | |
245 | else | |
246 | *snr = 0; | |
247 | ||
248 | return ret; | |
249 | error: | |
75aeafc9 | 250 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
251 | return ret; |
252 | } | |
253 | ||
9ac51c5e | 254 | int cxd2820r_read_ucblocks_c(struct dvb_frontend *fe, u32 *ucblocks) |
27cfc85e AP |
255 | { |
256 | *ucblocks = 0; | |
257 | /* no way to read ? */ | |
258 | return 0; | |
259 | } | |
260 | ||
9ac51c5e | 261 | int cxd2820r_read_status_c(struct dvb_frontend *fe, fe_status_t *status) |
27cfc85e AP |
262 | { |
263 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
264 | int ret; | |
265 | u8 buf[2]; | |
266 | *status = 0; | |
267 | ||
268 | ret = cxd2820r_rd_regs(priv, 0x10088, buf, sizeof(buf)); | |
269 | if (ret) | |
270 | goto error; | |
271 | ||
272 | if (((buf[0] >> 0) & 0x01) == 1) { | |
273 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
274 | FE_HAS_VITERBI | FE_HAS_SYNC; | |
275 | ||
276 | if (((buf[1] >> 3) & 0x01) == 1) { | |
277 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
278 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
279 | } | |
280 | } | |
281 | ||
75aeafc9 AP |
282 | dev_dbg(&priv->i2c->dev, "%s: lock=%02x %02x\n", __func__, buf[0], |
283 | buf[1]); | |
27cfc85e AP |
284 | |
285 | return ret; | |
286 | error: | |
75aeafc9 | 287 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
288 | return ret; |
289 | } | |
290 | ||
9ac51c5e | 291 | int cxd2820r_init_c(struct dvb_frontend *fe) |
27cfc85e AP |
292 | { |
293 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
294 | int ret; | |
295 | ||
296 | ret = cxd2820r_wr_reg(priv, 0x00085, 0x07); | |
297 | if (ret) | |
298 | goto error; | |
299 | ||
300 | return ret; | |
301 | error: | |
75aeafc9 | 302 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
303 | return ret; |
304 | } | |
305 | ||
9ac51c5e | 306 | int cxd2820r_sleep_c(struct dvb_frontend *fe) |
27cfc85e AP |
307 | { |
308 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
309 | int ret, i; | |
310 | struct reg_val_mask tab[] = { | |
311 | { 0x000ff, 0x1f, 0xff }, | |
312 | { 0x00085, 0x00, 0xff }, | |
313 | { 0x00088, 0x01, 0xff }, | |
314 | { 0x00081, 0x00, 0xff }, | |
315 | { 0x00080, 0x00, 0xff }, | |
316 | }; | |
317 | ||
75aeafc9 | 318 | dev_dbg(&priv->i2c->dev, "%s\n", __func__); |
27cfc85e AP |
319 | |
320 | priv->delivery_system = SYS_UNDEFINED; | |
321 | ||
322 | for (i = 0; i < ARRAY_SIZE(tab); i++) { | |
323 | ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, tab[i].val, | |
324 | tab[i].mask); | |
325 | if (ret) | |
326 | goto error; | |
327 | } | |
328 | ||
329 | return ret; | |
330 | error: | |
75aeafc9 | 331 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
332 | return ret; |
333 | } | |
334 | ||
9ac51c5e | 335 | int cxd2820r_get_tune_settings_c(struct dvb_frontend *fe, |
27cfc85e AP |
336 | struct dvb_frontend_tune_settings *s) |
337 | { | |
338 | s->min_delay_ms = 500; | |
339 | s->step_size = 0; /* no zigzag */ | |
340 | s->max_drift = 0; | |
341 | ||
342 | return 0; | |
343 | } |