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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 }, | |
4d1ab185 | 48 | { 0x10071, !priv->cfg.ts_clock_inv << 4, 0x10 }, |
27cfc85e AP |
49 | }; |
50 | ||
75aeafc9 AP |
51 | dev_dbg(&priv->i2c->dev, "%s: frequency=%d symbol_rate=%d\n", __func__, |
52 | c->frequency, c->symbol_rate); | |
27cfc85e | 53 | |
27cfc85e AP |
54 | /* program tuner */ |
55 | if (fe->ops.tuner_ops.set_params) | |
14d24d14 | 56 | fe->ops.tuner_ops.set_params(fe); |
27cfc85e | 57 | |
0349471b | 58 | if (priv->delivery_system != SYS_DVBC_ANNEX_A) { |
27cfc85e AP |
59 | for (i = 0; i < ARRAY_SIZE(tab); i++) { |
60 | ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, | |
61 | tab[i].val, tab[i].mask); | |
62 | if (ret) | |
63 | goto error; | |
64 | } | |
65 | } | |
66 | ||
0349471b | 67 | priv->delivery_system = SYS_DVBC_ANNEX_A; |
285c0b00 | 68 | priv->ber_running = false; /* tune stops BER counter */ |
27cfc85e | 69 | |
fda23faa AP |
70 | /* program IF frequency */ |
71 | if (fe->ops.tuner_ops.get_if_frequency) { | |
72 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq); | |
73 | if (ret) | |
74 | goto error; | |
75 | } else | |
76 | if_freq = 0; | |
77 | ||
75aeafc9 | 78 | dev_dbg(&priv->i2c->dev, "%s: if_freq=%d\n", __func__, if_freq); |
fda23faa AP |
79 | |
80 | num = if_freq / 1000; /* Hz => kHz */ | |
27cfc85e | 81 | num *= 0x4000; |
512eb720 | 82 | if_ctl = 0x4000 - DIV_ROUND_CLOSEST_ULL(num, 41000); |
27cfc85e AP |
83 | buf[0] = (if_ctl >> 8) & 0x3f; |
84 | buf[1] = (if_ctl >> 0) & 0xff; | |
85 | ||
86 | ret = cxd2820r_wr_regs(priv, 0x10042, buf, 2); | |
87 | if (ret) | |
88 | goto error; | |
89 | ||
90 | ret = cxd2820r_wr_reg(priv, 0x000ff, 0x08); | |
91 | if (ret) | |
92 | goto error; | |
93 | ||
94 | ret = cxd2820r_wr_reg(priv, 0x000fe, 0x01); | |
95 | if (ret) | |
96 | goto error; | |
97 | ||
98 | return ret; | |
99 | error: | |
75aeafc9 | 100 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
101 | return ret; |
102 | } | |
103 | ||
7e3e68bc MCC |
104 | int cxd2820r_get_frontend_c(struct dvb_frontend *fe, |
105 | struct dtv_frontend_properties *c) | |
27cfc85e AP |
106 | { |
107 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
27cfc85e AP |
108 | int ret; |
109 | u8 buf[2]; | |
110 | ||
111 | ret = cxd2820r_rd_regs(priv, 0x1001a, buf, 2); | |
112 | if (ret) | |
113 | goto error; | |
114 | ||
115 | c->symbol_rate = 2500 * ((buf[0] & 0x0f) << 8 | buf[1]); | |
116 | ||
117 | ret = cxd2820r_rd_reg(priv, 0x10019, &buf[0]); | |
118 | if (ret) | |
119 | goto error; | |
120 | ||
cba5d0b2 | 121 | switch ((buf[0] >> 0) & 0x07) { |
27cfc85e AP |
122 | case 0: |
123 | c->modulation = QAM_16; | |
124 | break; | |
125 | case 1: | |
126 | c->modulation = QAM_32; | |
127 | break; | |
128 | case 2: | |
129 | c->modulation = QAM_64; | |
130 | break; | |
131 | case 3: | |
132 | c->modulation = QAM_128; | |
133 | break; | |
134 | case 4: | |
135 | c->modulation = QAM_256; | |
136 | break; | |
137 | } | |
138 | ||
139 | switch ((buf[0] >> 7) & 0x01) { | |
140 | case 0: | |
141 | c->inversion = INVERSION_OFF; | |
142 | break; | |
143 | case 1: | |
144 | c->inversion = INVERSION_ON; | |
145 | break; | |
146 | } | |
147 | ||
148 | return ret; | |
149 | error: | |
75aeafc9 | 150 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
151 | return ret; |
152 | } | |
153 | ||
9ac51c5e | 154 | int cxd2820r_read_ber_c(struct dvb_frontend *fe, u32 *ber) |
27cfc85e AP |
155 | { |
156 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
157 | int ret; | |
158 | u8 buf[3], start_ber = 0; | |
159 | *ber = 0; | |
160 | ||
161 | if (priv->ber_running) { | |
162 | ret = cxd2820r_rd_regs(priv, 0x10076, buf, sizeof(buf)); | |
163 | if (ret) | |
164 | goto error; | |
165 | ||
166 | if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) { | |
167 | *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0]; | |
168 | start_ber = 1; | |
169 | } | |
170 | } else { | |
285c0b00 | 171 | priv->ber_running = true; |
27cfc85e AP |
172 | start_ber = 1; |
173 | } | |
174 | ||
175 | if (start_ber) { | |
176 | /* (re)start BER */ | |
177 | ret = cxd2820r_wr_reg(priv, 0x10079, 0x01); | |
178 | if (ret) | |
179 | goto error; | |
180 | } | |
181 | ||
182 | return ret; | |
183 | error: | |
75aeafc9 | 184 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
185 | return ret; |
186 | } | |
187 | ||
9ac51c5e | 188 | int cxd2820r_read_signal_strength_c(struct dvb_frontend *fe, |
27cfc85e AP |
189 | u16 *strength) |
190 | { | |
191 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
192 | int ret; | |
193 | u8 buf[2]; | |
194 | u16 tmp; | |
195 | ||
196 | ret = cxd2820r_rd_regs(priv, 0x10049, buf, sizeof(buf)); | |
197 | if (ret) | |
198 | goto error; | |
199 | ||
200 | tmp = (buf[0] & 0x03) << 8 | buf[1]; | |
201 | tmp = (~tmp & 0x03ff); | |
202 | ||
203 | if (tmp == 512) | |
204 | /* ~no signal */ | |
205 | tmp = 0; | |
206 | else if (tmp > 350) | |
207 | tmp = 350; | |
208 | ||
209 | /* scale value to 0x0000-0xffff */ | |
210 | *strength = tmp * 0xffff / (350-0); | |
211 | ||
212 | return ret; | |
213 | error: | |
75aeafc9 | 214 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
215 | return ret; |
216 | } | |
217 | ||
9ac51c5e | 218 | int cxd2820r_read_snr_c(struct dvb_frontend *fe, u16 *snr) |
27cfc85e AP |
219 | { |
220 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
221 | int ret; | |
222 | u8 tmp; | |
223 | unsigned int A, B; | |
224 | /* report SNR in dB * 10 */ | |
225 | ||
226 | ret = cxd2820r_rd_reg(priv, 0x10019, &tmp); | |
227 | if (ret) | |
228 | goto error; | |
229 | ||
230 | if (((tmp >> 0) & 0x03) % 2) { | |
231 | A = 875; | |
232 | B = 650; | |
233 | } else { | |
234 | A = 950; | |
235 | B = 760; | |
236 | } | |
237 | ||
238 | ret = cxd2820r_rd_reg(priv, 0x1004d, &tmp); | |
239 | if (ret) | |
240 | goto error; | |
241 | ||
242 | #define CXD2820R_LOG2_E_24 24204406 /* log2(e) << 24 */ | |
243 | if (tmp) | |
244 | *snr = A * (intlog2(B / tmp) >> 5) / (CXD2820R_LOG2_E_24 >> 5) | |
245 | / 10; | |
246 | else | |
247 | *snr = 0; | |
248 | ||
249 | return ret; | |
250 | error: | |
75aeafc9 | 251 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
252 | return ret; |
253 | } | |
254 | ||
9ac51c5e | 255 | int cxd2820r_read_ucblocks_c(struct dvb_frontend *fe, u32 *ucblocks) |
27cfc85e AP |
256 | { |
257 | *ucblocks = 0; | |
258 | /* no way to read ? */ | |
259 | return 0; | |
260 | } | |
261 | ||
0df289a2 | 262 | int cxd2820r_read_status_c(struct dvb_frontend *fe, enum fe_status *status) |
27cfc85e AP |
263 | { |
264 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
265 | int ret; | |
266 | u8 buf[2]; | |
267 | *status = 0; | |
268 | ||
269 | ret = cxd2820r_rd_regs(priv, 0x10088, buf, sizeof(buf)); | |
270 | if (ret) | |
271 | goto error; | |
272 | ||
273 | if (((buf[0] >> 0) & 0x01) == 1) { | |
274 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
275 | FE_HAS_VITERBI | FE_HAS_SYNC; | |
276 | ||
277 | if (((buf[1] >> 3) & 0x01) == 1) { | |
278 | *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | | |
279 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
280 | } | |
281 | } | |
282 | ||
75aeafc9 AP |
283 | dev_dbg(&priv->i2c->dev, "%s: lock=%02x %02x\n", __func__, buf[0], |
284 | buf[1]); | |
27cfc85e AP |
285 | |
286 | return ret; | |
287 | error: | |
75aeafc9 | 288 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
289 | return ret; |
290 | } | |
291 | ||
9ac51c5e | 292 | int cxd2820r_init_c(struct dvb_frontend *fe) |
27cfc85e AP |
293 | { |
294 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
295 | int ret; | |
296 | ||
297 | ret = cxd2820r_wr_reg(priv, 0x00085, 0x07); | |
298 | if (ret) | |
299 | goto error; | |
300 | ||
301 | return ret; | |
302 | error: | |
75aeafc9 | 303 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
304 | return ret; |
305 | } | |
306 | ||
9ac51c5e | 307 | int cxd2820r_sleep_c(struct dvb_frontend *fe) |
27cfc85e AP |
308 | { |
309 | struct cxd2820r_priv *priv = fe->demodulator_priv; | |
310 | int ret, i; | |
311 | struct reg_val_mask tab[] = { | |
312 | { 0x000ff, 0x1f, 0xff }, | |
313 | { 0x00085, 0x00, 0xff }, | |
314 | { 0x00088, 0x01, 0xff }, | |
315 | { 0x00081, 0x00, 0xff }, | |
316 | { 0x00080, 0x00, 0xff }, | |
317 | }; | |
318 | ||
75aeafc9 | 319 | dev_dbg(&priv->i2c->dev, "%s\n", __func__); |
27cfc85e AP |
320 | |
321 | priv->delivery_system = SYS_UNDEFINED; | |
322 | ||
323 | for (i = 0; i < ARRAY_SIZE(tab); i++) { | |
324 | ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, tab[i].val, | |
325 | tab[i].mask); | |
326 | if (ret) | |
327 | goto error; | |
328 | } | |
329 | ||
330 | return ret; | |
331 | error: | |
75aeafc9 | 332 | dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
27cfc85e AP |
333 | return ret; |
334 | } | |
335 | ||
9ac51c5e | 336 | int cxd2820r_get_tune_settings_c(struct dvb_frontend *fe, |
27cfc85e AP |
337 | struct dvb_frontend_tune_settings *s) |
338 | { | |
339 | s->min_delay_ms = 500; | |
340 | s->step_size = 0; /* no zigzag */ | |
341 | s->max_drift = 0; | |
342 | ||
343 | return 0; | |
344 | } |