Commit | Line | Data |
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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 | ||
24 | int cxd2820r_set_frontend_c(struct dvb_frontend *fe, | |
14c03862 | 25 | struct dvb_frontend_parameters *params) |
27cfc85e AP |
26 | { |
27 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
28 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
29 | int ret, i; | |
30 | u8 buf[2]; | |
fda23faa | 31 | u32 if_freq; |
27cfc85e AP |
32 | u16 if_ctl; |
33 | u64 num; | |
34 | struct reg_val_mask tab[] = { | |
35 | { 0x00080, 0x01, 0xff }, | |
36 | { 0x00081, 0x05, 0xff }, | |
37 | { 0x00085, 0x07, 0xff }, | |
38 | { 0x00088, 0x01, 0xff }, | |
39 | ||
40 | { 0x00082, 0x20, 0x60 }, | |
41 | { 0x1016a, 0x48, 0xff }, | |
42 | { 0x100a5, 0x00, 0x01 }, | |
43 | { 0x10020, 0x06, 0x07 }, | |
44 | { 0x10059, 0x50, 0xff }, | |
45 | { 0x10087, 0x0c, 0x3c }, | |
46 | { 0x1008b, 0x07, 0xff }, | |
47 | { 0x1001f, priv->cfg.if_agc_polarity << 7, 0x80 }, | |
48 | { 0x10070, priv->cfg.ts_mode, 0xff }, | |
49 | }; | |
50 | ||
51 | dbg("%s: RF=%d SR=%d", __func__, c->frequency, c->symbol_rate); | |
52 | ||
53 | /* update GPIOs */ | |
54 | ret = cxd2820r_gpio(fe); | |
55 | if (ret) | |
56 | goto error; | |
57 | ||
58 | /* program tuner */ | |
59 | if (fe->ops.tuner_ops.set_params) | |
14d24d14 | 60 | fe->ops.tuner_ops.set_params(fe); |
27cfc85e | 61 | |
0349471b | 62 | if (priv->delivery_system != SYS_DVBC_ANNEX_A) { |
27cfc85e AP |
63 | for (i = 0; i < ARRAY_SIZE(tab); i++) { |
64 | ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, | |
65 | tab[i].val, tab[i].mask); | |
66 | if (ret) | |
67 | goto error; | |
68 | } | |
69 | } | |
70 | ||
0349471b | 71 | priv->delivery_system = SYS_DVBC_ANNEX_A; |
27cfc85e AP |
72 | priv->ber_running = 0; /* tune stops BER counter */ |
73 | ||
fda23faa AP |
74 | /* program IF frequency */ |
75 | if (fe->ops.tuner_ops.get_if_frequency) { | |
76 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq); | |
77 | if (ret) | |
78 | goto error; | |
79 | } else | |
80 | if_freq = 0; | |
81 | ||
82 | dbg("%s: if_freq=%d", __func__, if_freq); | |
83 | ||
84 | num = if_freq / 1000; /* Hz => kHz */ | |
27cfc85e AP |
85 | num *= 0x4000; |
86 | if_ctl = cxd2820r_div_u64_round_closest(num, 41000); | |
87 | buf[0] = (if_ctl >> 8) & 0x3f; | |
88 | buf[1] = (if_ctl >> 0) & 0xff; | |
89 | ||
90 | ret = cxd2820r_wr_regs(priv, 0x10042, buf, 2); | |
91 | if (ret) | |
92 | goto error; | |
93 | ||
94 | ret = cxd2820r_wr_reg(priv, 0x000ff, 0x08); | |
95 | if (ret) | |
96 | goto error; | |
97 | ||
98 | ret = cxd2820r_wr_reg(priv, 0x000fe, 0x01); | |
99 | if (ret) | |
100 | goto error; | |
101 | ||
102 | return ret; | |
103 | error: | |
104 | dbg("%s: failed:%d", __func__, ret); | |
105 | return ret; | |
106 | } | |
107 | ||
9ac51c5e | 108 | int cxd2820r_get_frontend_c(struct dvb_frontend *fe, |
27cfc85e AP |
109 | struct dvb_frontend_parameters *p) |
110 | { | |
111 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
112 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
113 | int ret; | |
114 | u8 buf[2]; | |
115 | ||
116 | ret = cxd2820r_rd_regs(priv, 0x1001a, buf, 2); | |
117 | if (ret) | |
118 | goto error; | |
119 | ||
120 | c->symbol_rate = 2500 * ((buf[0] & 0x0f) << 8 | buf[1]); | |
121 | ||
122 | ret = cxd2820r_rd_reg(priv, 0x10019, &buf[0]); | |
123 | if (ret) | |
124 | goto error; | |
125 | ||
126 | switch ((buf[0] >> 0) & 0x03) { | |
127 | case 0: | |
128 | c->modulation = QAM_16; | |
129 | break; | |
130 | case 1: | |
131 | c->modulation = QAM_32; | |
132 | break; | |
133 | case 2: | |
134 | c->modulation = QAM_64; | |
135 | break; | |
136 | case 3: | |
137 | c->modulation = QAM_128; | |
138 | break; | |
139 | case 4: | |
140 | c->modulation = QAM_256; | |
141 | break; | |
142 | } | |
143 | ||
144 | switch ((buf[0] >> 7) & 0x01) { | |
145 | case 0: | |
146 | c->inversion = INVERSION_OFF; | |
147 | break; | |
148 | case 1: | |
149 | c->inversion = INVERSION_ON; | |
150 | break; | |
151 | } | |
152 | ||
153 | return ret; | |
154 | error: | |
155 | dbg("%s: failed:%d", __func__, ret); | |
156 | return ret; | |
157 | } | |
158 | ||
9ac51c5e | 159 | int cxd2820r_read_ber_c(struct dvb_frontend *fe, u32 *ber) |
27cfc85e AP |
160 | { |
161 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
162 | int ret; | |
163 | u8 buf[3], start_ber = 0; | |
164 | *ber = 0; | |
165 | ||
166 | if (priv->ber_running) { | |
167 | ret = cxd2820r_rd_regs(priv, 0x10076, buf, sizeof(buf)); | |
168 | if (ret) | |
169 | goto error; | |
170 | ||
171 | if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) { | |
172 | *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0]; | |
173 | start_ber = 1; | |
174 | } | |
175 | } else { | |
176 | priv->ber_running = 1; | |
177 | start_ber = 1; | |
178 | } | |
179 | ||
180 | if (start_ber) { | |
181 | /* (re)start BER */ | |
182 | ret = cxd2820r_wr_reg(priv, 0x10079, 0x01); | |
183 | if (ret) | |
184 | goto error; | |
185 | } | |
186 | ||
187 | return ret; | |
188 | error: | |
189 | dbg("%s: failed:%d", __func__, ret); | |
190 | return ret; | |
191 | } | |
192 | ||
9ac51c5e | 193 | int cxd2820r_read_signal_strength_c(struct dvb_frontend *fe, |
27cfc85e AP |
194 | u16 *strength) |
195 | { | |
196 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
197 | int ret; | |
198 | u8 buf[2]; | |
199 | u16 tmp; | |
200 | ||
201 | ret = cxd2820r_rd_regs(priv, 0x10049, buf, sizeof(buf)); | |
202 | if (ret) | |
203 | goto error; | |
204 | ||
205 | tmp = (buf[0] & 0x03) << 8 | buf[1]; | |
206 | tmp = (~tmp & 0x03ff); | |
207 | ||
208 | if (tmp == 512) | |
209 | /* ~no signal */ | |
210 | tmp = 0; | |
211 | else if (tmp > 350) | |
212 | tmp = 350; | |
213 | ||
214 | /* scale value to 0x0000-0xffff */ | |
215 | *strength = tmp * 0xffff / (350-0); | |
216 | ||
217 | return ret; | |
218 | error: | |
219 | dbg("%s: failed:%d", __func__, ret); | |
220 | return ret; | |
221 | } | |
222 | ||
9ac51c5e | 223 | int cxd2820r_read_snr_c(struct dvb_frontend *fe, u16 *snr) |
27cfc85e AP |
224 | { |
225 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
226 | int ret; | |
227 | u8 tmp; | |
228 | unsigned int A, B; | |
229 | /* report SNR in dB * 10 */ | |
230 | ||
231 | ret = cxd2820r_rd_reg(priv, 0x10019, &tmp); | |
232 | if (ret) | |
233 | goto error; | |
234 | ||
235 | if (((tmp >> 0) & 0x03) % 2) { | |
236 | A = 875; | |
237 | B = 650; | |
238 | } else { | |
239 | A = 950; | |
240 | B = 760; | |
241 | } | |
242 | ||
243 | ret = cxd2820r_rd_reg(priv, 0x1004d, &tmp); | |
244 | if (ret) | |
245 | goto error; | |
246 | ||
247 | #define CXD2820R_LOG2_E_24 24204406 /* log2(e) << 24 */ | |
248 | if (tmp) | |
249 | *snr = A * (intlog2(B / tmp) >> 5) / (CXD2820R_LOG2_E_24 >> 5) | |
250 | / 10; | |
251 | else | |
252 | *snr = 0; | |
253 | ||
254 | return ret; | |
255 | error: | |
256 | dbg("%s: failed:%d", __func__, ret); | |
257 | return ret; | |
258 | } | |
259 | ||
9ac51c5e | 260 | int cxd2820r_read_ucblocks_c(struct dvb_frontend *fe, u32 *ucblocks) |
27cfc85e AP |
261 | { |
262 | *ucblocks = 0; | |
263 | /* no way to read ? */ | |
264 | return 0; | |
265 | } | |
266 | ||
9ac51c5e | 267 | int cxd2820r_read_status_c(struct dvb_frontend *fe, fe_status_t *status) |
27cfc85e AP |
268 | { |
269 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
270 | int ret; | |
271 | u8 buf[2]; | |
272 | *status = 0; | |
273 | ||
274 | ret = cxd2820r_rd_regs(priv, 0x10088, buf, sizeof(buf)); | |
275 | if (ret) | |
276 | goto error; | |
277 | ||
278 | if (((buf[0] >> 0) & 0x01) == 1) { | |
279 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
280 | FE_HAS_VITERBI | FE_HAS_SYNC; | |
281 | ||
282 | if (((buf[1] >> 3) & 0x01) == 1) { | |
283 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
284 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
285 | } | |
286 | } | |
287 | ||
288 | dbg("%s: lock=%02x %02x", __func__, buf[0], buf[1]); | |
289 | ||
290 | return ret; | |
291 | error: | |
292 | dbg("%s: failed:%d", __func__, ret); | |
293 | return ret; | |
294 | } | |
295 | ||
9ac51c5e | 296 | int cxd2820r_init_c(struct dvb_frontend *fe) |
27cfc85e AP |
297 | { |
298 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
299 | int ret; | |
300 | ||
301 | ret = cxd2820r_wr_reg(priv, 0x00085, 0x07); | |
302 | if (ret) | |
303 | goto error; | |
304 | ||
305 | return ret; | |
306 | error: | |
307 | dbg("%s: failed:%d", __func__, ret); | |
308 | return ret; | |
309 | } | |
310 | ||
9ac51c5e | 311 | int cxd2820r_sleep_c(struct dvb_frontend *fe) |
27cfc85e AP |
312 | { |
313 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
314 | int ret, i; | |
315 | struct reg_val_mask tab[] = { | |
316 | { 0x000ff, 0x1f, 0xff }, | |
317 | { 0x00085, 0x00, 0xff }, | |
318 | { 0x00088, 0x01, 0xff }, | |
319 | { 0x00081, 0x00, 0xff }, | |
320 | { 0x00080, 0x00, 0xff }, | |
321 | }; | |
322 | ||
323 | dbg("%s", __func__); | |
324 | ||
325 | priv->delivery_system = SYS_UNDEFINED; | |
326 | ||
327 | for (i = 0; i < ARRAY_SIZE(tab); i++) { | |
328 | ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, tab[i].val, | |
329 | tab[i].mask); | |
330 | if (ret) | |
331 | goto error; | |
332 | } | |
333 | ||
334 | return ret; | |
335 | error: | |
336 | dbg("%s: failed:%d", __func__, ret); | |
337 | return ret; | |
338 | } | |
339 | ||
9ac51c5e | 340 | int cxd2820r_get_tune_settings_c(struct dvb_frontend *fe, |
27cfc85e AP |
341 | struct dvb_frontend_tune_settings *s) |
342 | { | |
343 | s->min_delay_ms = 500; | |
344 | s->step_size = 0; /* no zigzag */ | |
345 | s->max_drift = 0; | |
346 | ||
347 | return 0; | |
348 | } |