Commit | Line | Data |
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b9ede79a MCC |
1 | /* |
2 | * Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver | |
3 | * | |
a77cfcac | 4 | * Copyright (C) 2010-2013 Mauro Carvalho Chehab <mchehab@redhat.com> |
b9ede79a MCC |
5 | * Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com> |
6 | * | |
b9ede79a MCC |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License as | |
9 | * published by the Free Software Foundation version 2. | |
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 GNU | |
14 | * General Public License for more details. | |
15 | */ | |
16 | ||
17 | #include <linux/kernel.h> | |
18 | #include <asm/div64.h> | |
19 | ||
20 | #include "dvb_frontend.h" | |
21 | #include "mb86a20s.h" | |
22 | ||
4f62a20d MCC |
23 | #define NUM_LAYERS 3 |
24 | ||
b9ede79a MCC |
25 | static int debug = 1; |
26 | module_param(debug, int, 0644); | |
27 | MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)"); | |
28 | ||
04fa725e MCC |
29 | enum mb86a20s_bandwidth { |
30 | MB86A20S_13SEG = 0, | |
31 | MB86A20S_13SEG_PARTIAL = 1, | |
32 | MB86A20S_1SEG = 2, | |
33 | MB86A20S_3SEG = 3, | |
34 | }; | |
35 | ||
36 | u8 mb86a20s_subchannel[] = { | |
37 | 0xb0, 0xc0, 0xd0, 0xe0, | |
38 | 0xf0, 0x00, 0x10, 0x20, | |
39 | }; | |
40 | ||
b9ede79a MCC |
41 | struct mb86a20s_state { |
42 | struct i2c_adapter *i2c; | |
43 | const struct mb86a20s_config *config; | |
09b6d21e | 44 | u32 last_frequency; |
b9ede79a MCC |
45 | |
46 | struct dvb_frontend frontend; | |
c736a5f2 | 47 | |
768e6dad | 48 | u32 if_freq; |
04fa725e MCC |
49 | enum mb86a20s_bandwidth bw; |
50 | bool inversion; | |
51 | u32 subchannel; | |
768e6dad | 52 | |
4f62a20d | 53 | u32 estimated_rate[NUM_LAYERS]; |
0921ecfd | 54 | unsigned long get_strength_time; |
d01a8ee3 | 55 | |
c736a5f2 | 56 | bool need_init; |
b9ede79a MCC |
57 | }; |
58 | ||
59 | struct regdata { | |
60 | u8 reg; | |
61 | u8 data; | |
62 | }; | |
63 | ||
d01a8ee3 MCC |
64 | #define BER_SAMPLING_RATE 1 /* Seconds */ |
65 | ||
b9ede79a MCC |
66 | /* |
67 | * Initialization sequence: Use whatevere default values that PV SBTVD | |
68 | * does on its initialisation, obtained via USB snoop | |
69 | */ | |
768e6dad | 70 | static struct regdata mb86a20s_init1[] = { |
b9ede79a MCC |
71 | { 0x70, 0x0f }, |
72 | { 0x70, 0xff }, | |
73 | { 0x08, 0x01 }, | |
17e67d4c | 74 | { 0x50, 0xd1 }, { 0x51, 0x20 }, |
768e6dad MCC |
75 | }; |
76 | ||
77 | static struct regdata mb86a20s_init2[] = { | |
ebe96749 | 78 | { 0x28, 0x22 }, { 0x29, 0x00 }, { 0x2a, 0x1f }, { 0x2b, 0xf0 }, |
b9ede79a | 79 | { 0x3b, 0x21 }, |
17e67d4c | 80 | { 0x3c, 0x38 }, |
b9ede79a | 81 | { 0x01, 0x0d }, |
17e67d4c | 82 | { 0x04, 0x08 }, { 0x05, 0x03 }, |
a7025edf | 83 | { 0x04, 0x0e }, { 0x05, 0x00 }, |
17e67d4c MCC |
84 | { 0x04, 0x0f }, { 0x05, 0x37 }, |
85 | { 0x04, 0x0b }, { 0x05, 0x78 }, | |
a7025edf | 86 | { 0x04, 0x00 }, { 0x05, 0x00 }, |
17e67d4c MCC |
87 | { 0x04, 0x01 }, { 0x05, 0x1e }, |
88 | { 0x04, 0x02 }, { 0x05, 0x07 }, | |
89 | { 0x04, 0x03 }, { 0x05, 0xd0 }, | |
a7025edf MCC |
90 | { 0x04, 0x09 }, { 0x05, 0x00 }, |
91 | { 0x04, 0x0a }, { 0x05, 0xff }, | |
17e67d4c | 92 | { 0x04, 0x27 }, { 0x05, 0x00 }, |
a7025edf | 93 | { 0x04, 0x28 }, { 0x05, 0x00 }, |
17e67d4c MCC |
94 | { 0x04, 0x1e }, { 0x05, 0x00 }, |
95 | { 0x04, 0x29 }, { 0x05, 0x64 }, | |
96 | { 0x04, 0x32 }, { 0x05, 0x02 }, | |
a7025edf MCC |
97 | { 0x04, 0x14 }, { 0x05, 0x02 }, |
98 | { 0x04, 0x04 }, { 0x05, 0x00 }, | |
99 | { 0x04, 0x05 }, { 0x05, 0x22 }, | |
100 | { 0x04, 0x06 }, { 0x05, 0x0e }, | |
101 | { 0x04, 0x07 }, { 0x05, 0xd8 }, | |
102 | { 0x04, 0x12 }, { 0x05, 0x00 }, | |
103 | { 0x04, 0x13 }, { 0x05, 0xff }, | |
ebe96749 MCC |
104 | { 0x04, 0x15 }, { 0x05, 0x4e }, |
105 | { 0x04, 0x16 }, { 0x05, 0x20 }, | |
09b6d21e MCC |
106 | |
107 | /* | |
108 | * On this demod, when the bit count reaches the count below, | |
109 | * it collects the bit error count. The bit counters are initialized | |
110 | * to 65535 here. This warrants that all of them will be quickly | |
111 | * calculated when device gets locked. As TMCC is parsed, the values | |
d01a8ee3 | 112 | * will be adjusted later in the driver's code. |
09b6d21e MCC |
113 | */ |
114 | { 0x52, 0x01 }, /* Turn on BER before Viterbi */ | |
115 | { 0x50, 0xa7 }, { 0x51, 0x00 }, | |
a7025edf MCC |
116 | { 0x50, 0xa8 }, { 0x51, 0xff }, |
117 | { 0x50, 0xa9 }, { 0x51, 0xff }, | |
09b6d21e | 118 | { 0x50, 0xaa }, { 0x51, 0x00 }, |
a7025edf MCC |
119 | { 0x50, 0xab }, { 0x51, 0xff }, |
120 | { 0x50, 0xac }, { 0x51, 0xff }, | |
09b6d21e | 121 | { 0x50, 0xad }, { 0x51, 0x00 }, |
a7025edf MCC |
122 | { 0x50, 0xae }, { 0x51, 0xff }, |
123 | { 0x50, 0xaf }, { 0x51, 0xff }, | |
09b6d21e | 124 | |
d9b6f08a MCC |
125 | /* |
126 | * On this demod, post BER counts blocks. When the count reaches the | |
127 | * value below, it collects the block error count. The block counters | |
128 | * are initialized to 127 here. This warrants that all of them will be | |
129 | * quickly calculated when device gets locked. As TMCC is parsed, the | |
130 | * values will be adjusted later in the driver's code. | |
131 | */ | |
132 | { 0x5e, 0x07 }, /* Turn on BER after Viterbi */ | |
133 | { 0x50, 0xdc }, { 0x51, 0x00 }, | |
134 | { 0x50, 0xdd }, { 0x51, 0x7f }, | |
135 | { 0x50, 0xde }, { 0x51, 0x00 }, | |
136 | { 0x50, 0xdf }, { 0x51, 0x7f }, | |
137 | { 0x50, 0xe0 }, { 0x51, 0x00 }, | |
138 | { 0x50, 0xe1 }, { 0x51, 0x7f }, | |
593ae89a MCC |
139 | |
140 | /* | |
141 | * On this demod, when the block count reaches the count below, | |
142 | * it collects the block error count. The block counters are initialized | |
143 | * to 127 here. This warrants that all of them will be quickly | |
144 | * calculated when device gets locked. As TMCC is parsed, the values | |
145 | * will be adjusted later in the driver's code. | |
146 | */ | |
147 | { 0x50, 0xb0 }, { 0x51, 0x07 }, /* Enable PER */ | |
148 | { 0x50, 0xb2 }, { 0x51, 0x00 }, | |
149 | { 0x50, 0xb3 }, { 0x51, 0x7f }, | |
150 | { 0x50, 0xb4 }, { 0x51, 0x00 }, | |
151 | { 0x50, 0xb5 }, { 0x51, 0x7f }, | |
152 | { 0x50, 0xb6 }, { 0x51, 0x00 }, | |
153 | { 0x50, 0xb7 }, { 0x51, 0x7f }, | |
25188bd0 MCC |
154 | |
155 | { 0x50, 0x50 }, { 0x51, 0x02 }, /* MER manual mode */ | |
09b6d21e MCC |
156 | { 0x50, 0x51 }, { 0x51, 0x04 }, /* MER symbol 4 */ |
157 | { 0x45, 0x04 }, /* CN symbol 4 */ | |
25188bd0 MCC |
158 | { 0x48, 0x04 }, /* CN manual mode */ |
159 | ||
a7025edf MCC |
160 | { 0x50, 0xd5 }, { 0x51, 0x01 }, /* Serial */ |
161 | { 0x50, 0xd6 }, { 0x51, 0x1f }, | |
162 | { 0x50, 0xd2 }, { 0x51, 0x03 }, | |
17e67d4c MCC |
163 | { 0x50, 0xd7 }, { 0x51, 0xbf }, |
164 | { 0x28, 0x74 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0xff }, | |
165 | { 0x28, 0x46 }, { 0x29, 0x00 }, { 0x2a, 0x1a }, { 0x2b, 0x0c }, | |
ce77d120 MCC |
166 | |
167 | { 0x04, 0x40 }, { 0x05, 0x00 }, | |
17e67d4c MCC |
168 | { 0x28, 0x00 }, { 0x2b, 0x08 }, |
169 | { 0x28, 0x05 }, { 0x2b, 0x00 }, | |
b9ede79a | 170 | { 0x1c, 0x01 }, |
17e67d4c MCC |
171 | { 0x28, 0x06 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x1f }, |
172 | { 0x28, 0x07 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x18 }, | |
173 | { 0x28, 0x08 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x12 }, | |
174 | { 0x28, 0x09 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x30 }, | |
175 | { 0x28, 0x0a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x37 }, | |
176 | { 0x28, 0x0b }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x02 }, | |
177 | { 0x28, 0x0c }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x09 }, | |
178 | { 0x28, 0x0d }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x06 }, | |
179 | { 0x28, 0x0e }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x7b }, | |
180 | { 0x28, 0x0f }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x76 }, | |
181 | { 0x28, 0x10 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x7d }, | |
182 | { 0x28, 0x11 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x08 }, | |
183 | { 0x28, 0x12 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0b }, | |
184 | { 0x28, 0x13 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x00 }, | |
185 | { 0x28, 0x14 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xf2 }, | |
186 | { 0x28, 0x15 }, { 0x29, 0x00 }, { 0x2a, 0x01 }, { 0x2b, 0xf3 }, | |
187 | { 0x28, 0x16 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x05 }, | |
188 | { 0x28, 0x17 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x16 }, | |
189 | { 0x28, 0x18 }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x0f }, | |
190 | { 0x28, 0x19 }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xef }, | |
191 | { 0x28, 0x1a }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xd8 }, | |
192 | { 0x28, 0x1b }, { 0x29, 0x00 }, { 0x2a, 0x07 }, { 0x2b, 0xf1 }, | |
193 | { 0x28, 0x1c }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x3d }, | |
194 | { 0x28, 0x1d }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x94 }, | |
195 | { 0x28, 0x1e }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0xba }, | |
a7025edf MCC |
196 | { 0x50, 0x1e }, { 0x51, 0x5d }, |
197 | { 0x50, 0x22 }, { 0x51, 0x00 }, | |
198 | { 0x50, 0x23 }, { 0x51, 0xc8 }, | |
199 | { 0x50, 0x24 }, { 0x51, 0x00 }, | |
200 | { 0x50, 0x25 }, { 0x51, 0xf0 }, | |
201 | { 0x50, 0x26 }, { 0x51, 0x00 }, | |
202 | { 0x50, 0x27 }, { 0x51, 0xc3 }, | |
203 | { 0x50, 0x39 }, { 0x51, 0x02 }, | |
17e67d4c MCC |
204 | { 0xec, 0x0f }, |
205 | { 0xeb, 0x1f }, | |
ebe96749 | 206 | { 0x28, 0x6a }, { 0x29, 0x00 }, { 0x2a, 0x00 }, { 0x2b, 0x00 }, |
b9ede79a MCC |
207 | { 0xd0, 0x00 }, |
208 | }; | |
209 | ||
210 | static struct regdata mb86a20s_reset_reception[] = { | |
211 | { 0x70, 0xf0 }, | |
212 | { 0x70, 0xff }, | |
213 | { 0x08, 0x01 }, | |
214 | { 0x08, 0x00 }, | |
215 | }; | |
216 | ||
d9b6f08a MCC |
217 | static struct regdata mb86a20s_per_ber_reset[] = { |
218 | { 0x53, 0x00 }, /* pre BER Counter reset */ | |
09b6d21e | 219 | { 0x53, 0x07 }, |
09b6d21e | 220 | |
d9b6f08a MCC |
221 | { 0x5f, 0x00 }, /* post BER Counter reset */ |
222 | { 0x5f, 0x07 }, | |
223 | ||
09b6d21e MCC |
224 | { 0x50, 0xb1 }, /* PER Counter reset */ |
225 | { 0x51, 0x07 }, | |
226 | { 0x51, 0x00 }, | |
227 | }; | |
228 | ||
dd4493ef MCC |
229 | /* |
230 | * I2C read/write functions and macros | |
231 | */ | |
232 | ||
b9ede79a | 233 | static int mb86a20s_i2c_writereg(struct mb86a20s_state *state, |
09b6d21e | 234 | u8 i2c_addr, u8 reg, u8 data) |
b9ede79a MCC |
235 | { |
236 | u8 buf[] = { reg, data }; | |
237 | struct i2c_msg msg = { | |
238 | .addr = i2c_addr, .flags = 0, .buf = buf, .len = 2 | |
239 | }; | |
240 | int rc; | |
241 | ||
242 | rc = i2c_transfer(state->i2c, &msg, 1); | |
243 | if (rc != 1) { | |
f66d81b5 MCC |
244 | dev_err(&state->i2c->dev, |
245 | "%s: writereg error (rc == %i, reg == 0x%02x, data == 0x%02x)\n", | |
246 | __func__, rc, reg, data); | |
b9ede79a MCC |
247 | return rc; |
248 | } | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state, | |
254 | u8 i2c_addr, struct regdata *rd, int size) | |
255 | { | |
256 | int i, rc; | |
257 | ||
258 | for (i = 0; i < size; i++) { | |
259 | rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg, | |
260 | rd[i].data); | |
261 | if (rc < 0) | |
262 | return rc; | |
263 | } | |
264 | return 0; | |
265 | } | |
266 | ||
267 | static int mb86a20s_i2c_readreg(struct mb86a20s_state *state, | |
268 | u8 i2c_addr, u8 reg) | |
269 | { | |
270 | u8 val; | |
271 | int rc; | |
272 | struct i2c_msg msg[] = { | |
273 | { .addr = i2c_addr, .flags = 0, .buf = ®, .len = 1 }, | |
274 | { .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 } | |
275 | }; | |
276 | ||
277 | rc = i2c_transfer(state->i2c, msg, 2); | |
278 | ||
279 | if (rc != 2) { | |
f66d81b5 MCC |
280 | dev_err(&state->i2c->dev, "%s: reg=0x%x (error=%d)\n", |
281 | __func__, reg, rc); | |
282 | return (rc < 0) ? rc : -EIO; | |
b9ede79a MCC |
283 | } |
284 | ||
285 | return val; | |
286 | } | |
287 | ||
288 | #define mb86a20s_readreg(state, reg) \ | |
289 | mb86a20s_i2c_readreg(state, state->config->demod_address, reg) | |
290 | #define mb86a20s_writereg(state, reg, val) \ | |
291 | mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val) | |
292 | #define mb86a20s_writeregdata(state, regdata) \ | |
293 | mb86a20s_i2c_writeregdata(state, state->config->demod_address, \ | |
294 | regdata, ARRAY_SIZE(regdata)) | |
295 | ||
09b6d21e MCC |
296 | /* |
297 | * Ancillary internal routines (likely compiled inlined) | |
298 | * | |
299 | * The functions below assume that gateway lock has already obtained | |
300 | */ | |
301 | ||
dd4493ef | 302 | static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status) |
b9ede79a MCC |
303 | { |
304 | struct mb86a20s_state *state = fe->demodulator_priv; | |
dd4493ef | 305 | int val; |
b9ede79a | 306 | |
dd4493ef | 307 | *status = 0; |
b9ede79a | 308 | |
dd4493ef MCC |
309 | val = mb86a20s_readreg(state, 0x0a) & 0xf; |
310 | if (val < 0) | |
311 | return val; | |
68541cda | 312 | |
dd4493ef MCC |
313 | if (val >= 2) |
314 | *status |= FE_HAS_SIGNAL; | |
b9ede79a | 315 | |
dd4493ef MCC |
316 | if (val >= 4) |
317 | *status |= FE_HAS_CARRIER; | |
7572f9c5 | 318 | |
dd4493ef MCC |
319 | if (val >= 5) |
320 | *status |= FE_HAS_VITERBI; | |
7572f9c5 | 321 | |
dd4493ef MCC |
322 | if (val >= 7) |
323 | *status |= FE_HAS_SYNC; | |
68541cda | 324 | |
dd4493ef MCC |
325 | if (val >= 8) /* Maybe 9? */ |
326 | *status |= FE_HAS_LOCK; | |
327 | ||
f66d81b5 MCC |
328 | dev_dbg(&state->i2c->dev, "%s: Status = 0x%02x (state = %d)\n", |
329 | __func__, *status, val); | |
dd4493ef | 330 | |
15b1c5a0 | 331 | return val; |
b9ede79a MCC |
332 | } |
333 | ||
09b6d21e | 334 | static int mb86a20s_read_signal_strength(struct dvb_frontend *fe) |
b9ede79a MCC |
335 | { |
336 | struct mb86a20s_state *state = fe->demodulator_priv; | |
0921ecfd | 337 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
09b6d21e | 338 | int rc; |
b9ede79a | 339 | unsigned rf_max, rf_min, rf; |
68541cda | 340 | |
0921ecfd MCC |
341 | if (state->get_strength_time && |
342 | (!time_after(jiffies, state->get_strength_time))) | |
343 | return c->strength.stat[0].uvalue; | |
344 | ||
345 | /* Reset its value if an error happen */ | |
346 | c->strength.stat[0].uvalue = 0; | |
347 | ||
b9ede79a MCC |
348 | /* Does a binary search to get RF strength */ |
349 | rf_max = 0xfff; | |
350 | rf_min = 0; | |
351 | do { | |
352 | rf = (rf_max + rf_min) / 2; | |
09b6d21e MCC |
353 | rc = mb86a20s_writereg(state, 0x04, 0x1f); |
354 | if (rc < 0) | |
355 | return rc; | |
356 | rc = mb86a20s_writereg(state, 0x05, rf >> 8); | |
357 | if (rc < 0) | |
358 | return rc; | |
359 | rc = mb86a20s_writereg(state, 0x04, 0x20); | |
360 | if (rc < 0) | |
361 | return rc; | |
dad78c56 | 362 | rc = mb86a20s_writereg(state, 0x05, rf); |
09b6d21e MCC |
363 | if (rc < 0) |
364 | return rc; | |
b9ede79a | 365 | |
09b6d21e MCC |
366 | rc = mb86a20s_readreg(state, 0x02); |
367 | if (rc < 0) | |
368 | return rc; | |
369 | if (rc & 0x08) | |
b9ede79a MCC |
370 | rf_min = (rf_max + rf_min) / 2; |
371 | else | |
372 | rf_max = (rf_max + rf_min) / 2; | |
373 | if (rf_max - rf_min < 4) { | |
09b6d21e MCC |
374 | rf = (rf_max + rf_min) / 2; |
375 | ||
376 | /* Rescale it from 2^12 (4096) to 2^16 */ | |
0921ecfd MCC |
377 | rf = rf << (16 - 12); |
378 | if (rf) | |
379 | rf |= (1 << 12) - 1; | |
380 | ||
f66d81b5 MCC |
381 | dev_dbg(&state->i2c->dev, |
382 | "%s: signal strength = %d (%d < RF=%d < %d)\n", | |
383 | __func__, rf, rf_min, rf >> 4, rf_max); | |
0921ecfd MCC |
384 | c->strength.stat[0].uvalue = rf; |
385 | state->get_strength_time = jiffies + | |
386 | msecs_to_jiffies(1000); | |
387 | return 0; | |
b9ede79a MCC |
388 | } |
389 | } while (1); | |
b9ede79a MCC |
390 | } |
391 | ||
959a119f MCC |
392 | static int mb86a20s_get_modulation(struct mb86a20s_state *state, |
393 | unsigned layer) | |
394 | { | |
395 | int rc; | |
396 | static unsigned char reg[] = { | |
397 | [0] = 0x86, /* Layer A */ | |
398 | [1] = 0x8a, /* Layer B */ | |
399 | [2] = 0x8e, /* Layer C */ | |
400 | }; | |
401 | ||
82033bc5 | 402 | if (layer >= ARRAY_SIZE(reg)) |
959a119f MCC |
403 | return -EINVAL; |
404 | rc = mb86a20s_writereg(state, 0x6d, reg[layer]); | |
405 | if (rc < 0) | |
406 | return rc; | |
407 | rc = mb86a20s_readreg(state, 0x6e); | |
408 | if (rc < 0) | |
409 | return rc; | |
04585921 | 410 | switch ((rc >> 4) & 0x07) { |
959a119f MCC |
411 | case 0: |
412 | return DQPSK; | |
413 | case 1: | |
414 | return QPSK; | |
415 | case 2: | |
416 | return QAM_16; | |
417 | case 3: | |
418 | return QAM_64; | |
419 | default: | |
420 | return QAM_AUTO; | |
421 | } | |
422 | } | |
423 | ||
424 | static int mb86a20s_get_fec(struct mb86a20s_state *state, | |
425 | unsigned layer) | |
426 | { | |
427 | int rc; | |
428 | ||
429 | static unsigned char reg[] = { | |
430 | [0] = 0x87, /* Layer A */ | |
431 | [1] = 0x8b, /* Layer B */ | |
432 | [2] = 0x8f, /* Layer C */ | |
433 | }; | |
434 | ||
82033bc5 | 435 | if (layer >= ARRAY_SIZE(reg)) |
959a119f MCC |
436 | return -EINVAL; |
437 | rc = mb86a20s_writereg(state, 0x6d, reg[layer]); | |
438 | if (rc < 0) | |
439 | return rc; | |
440 | rc = mb86a20s_readreg(state, 0x6e); | |
441 | if (rc < 0) | |
442 | return rc; | |
04585921 | 443 | switch ((rc >> 4) & 0x07) { |
959a119f MCC |
444 | case 0: |
445 | return FEC_1_2; | |
446 | case 1: | |
447 | return FEC_2_3; | |
448 | case 2: | |
449 | return FEC_3_4; | |
450 | case 3: | |
451 | return FEC_5_6; | |
452 | case 4: | |
453 | return FEC_7_8; | |
454 | default: | |
455 | return FEC_AUTO; | |
456 | } | |
457 | } | |
458 | ||
459 | static int mb86a20s_get_interleaving(struct mb86a20s_state *state, | |
460 | unsigned layer) | |
461 | { | |
462 | int rc; | |
463 | ||
464 | static unsigned char reg[] = { | |
465 | [0] = 0x88, /* Layer A */ | |
466 | [1] = 0x8c, /* Layer B */ | |
467 | [2] = 0x90, /* Layer C */ | |
468 | }; | |
469 | ||
82033bc5 | 470 | if (layer >= ARRAY_SIZE(reg)) |
959a119f MCC |
471 | return -EINVAL; |
472 | rc = mb86a20s_writereg(state, 0x6d, reg[layer]); | |
473 | if (rc < 0) | |
474 | return rc; | |
475 | rc = mb86a20s_readreg(state, 0x6e); | |
476 | if (rc < 0) | |
477 | return rc; | |
04585921 MCC |
478 | |
479 | switch ((rc >> 4) & 0x07) { | |
480 | case 1: | |
481 | return GUARD_INTERVAL_1_4; | |
482 | case 2: | |
483 | return GUARD_INTERVAL_1_8; | |
484 | case 3: | |
485 | return GUARD_INTERVAL_1_16; | |
486 | case 4: | |
487 | return GUARD_INTERVAL_1_32; | |
488 | ||
489 | default: | |
490 | case 0: | |
491 | return GUARD_INTERVAL_AUTO; | |
492 | } | |
959a119f MCC |
493 | } |
494 | ||
495 | static int mb86a20s_get_segment_count(struct mb86a20s_state *state, | |
496 | unsigned layer) | |
497 | { | |
498 | int rc, count; | |
959a119f MCC |
499 | static unsigned char reg[] = { |
500 | [0] = 0x89, /* Layer A */ | |
501 | [1] = 0x8d, /* Layer B */ | |
502 | [2] = 0x91, /* Layer C */ | |
503 | }; | |
504 | ||
f66d81b5 MCC |
505 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
506 | ||
82033bc5 | 507 | if (layer >= ARRAY_SIZE(reg)) |
959a119f | 508 | return -EINVAL; |
f66d81b5 | 509 | |
959a119f MCC |
510 | rc = mb86a20s_writereg(state, 0x6d, reg[layer]); |
511 | if (rc < 0) | |
512 | return rc; | |
513 | rc = mb86a20s_readreg(state, 0x6e); | |
514 | if (rc < 0) | |
515 | return rc; | |
516 | count = (rc >> 4) & 0x0f; | |
517 | ||
f66d81b5 MCC |
518 | dev_dbg(&state->i2c->dev, "%s: segments: %d.\n", __func__, count); |
519 | ||
959a119f MCC |
520 | return count; |
521 | } | |
522 | ||
a77cfcac MCC |
523 | static void mb86a20s_reset_frontend_cache(struct dvb_frontend *fe) |
524 | { | |
f66d81b5 | 525 | struct mb86a20s_state *state = fe->demodulator_priv; |
a77cfcac MCC |
526 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
527 | ||
f66d81b5 MCC |
528 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
529 | ||
a77cfcac MCC |
530 | /* Fixed parameters */ |
531 | c->delivery_system = SYS_ISDBT; | |
532 | c->bandwidth_hz = 6000000; | |
533 | ||
534 | /* Initialize values that will be later autodetected */ | |
535 | c->isdbt_layer_enabled = 0; | |
536 | c->transmission_mode = TRANSMISSION_MODE_AUTO; | |
537 | c->guard_interval = GUARD_INTERVAL_AUTO; | |
538 | c->isdbt_sb_mode = 0; | |
539 | c->isdbt_sb_segment_count = 0; | |
540 | } | |
541 | ||
d01a8ee3 MCC |
542 | /* |
543 | * Estimates the bit rate using the per-segment bit rate given by | |
544 | * ABNT/NBR 15601 spec (table 4). | |
545 | */ | |
546 | static u32 isdbt_rate[3][5][4] = { | |
547 | { /* DQPSK/QPSK */ | |
548 | { 280850, 312060, 330420, 340430 }, /* 1/2 */ | |
549 | { 374470, 416080, 440560, 453910 }, /* 2/3 */ | |
550 | { 421280, 468090, 495630, 510650 }, /* 3/4 */ | |
551 | { 468090, 520100, 550700, 567390 }, /* 5/6 */ | |
552 | { 491500, 546110, 578230, 595760 }, /* 7/8 */ | |
553 | }, { /* QAM16 */ | |
554 | { 561710, 624130, 660840, 680870 }, /* 1/2 */ | |
555 | { 748950, 832170, 881120, 907820 }, /* 2/3 */ | |
556 | { 842570, 936190, 991260, 1021300 }, /* 3/4 */ | |
557 | { 936190, 1040210, 1101400, 1134780 }, /* 5/6 */ | |
558 | { 983000, 1092220, 1156470, 1191520 }, /* 7/8 */ | |
559 | }, { /* QAM64 */ | |
560 | { 842570, 936190, 991260, 1021300 }, /* 1/2 */ | |
561 | { 1123430, 1248260, 1321680, 1361740 }, /* 2/3 */ | |
562 | { 1263860, 1404290, 1486900, 1531950 }, /* 3/4 */ | |
563 | { 1404290, 1560320, 1652110, 1702170 }, /* 5/6 */ | |
564 | { 1474500, 1638340, 1734710, 1787280 }, /* 7/8 */ | |
565 | } | |
566 | }; | |
567 | ||
568 | static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer, | |
569 | u32 modulation, u32 fec, u32 interleaving, | |
570 | u32 segment) | |
571 | { | |
572 | struct mb86a20s_state *state = fe->demodulator_priv; | |
573 | u32 rate; | |
574 | int m, f, i; | |
575 | ||
576 | /* | |
577 | * If modulation/fec/interleaving is not detected, the default is | |
578 | * to consider the lowest bit rate, to avoid taking too long time | |
579 | * to get BER. | |
580 | */ | |
581 | switch (modulation) { | |
582 | case DQPSK: | |
583 | case QPSK: | |
584 | default: | |
585 | m = 0; | |
586 | break; | |
587 | case QAM_16: | |
588 | m = 1; | |
589 | break; | |
590 | case QAM_64: | |
591 | m = 2; | |
592 | break; | |
593 | } | |
594 | ||
595 | switch (fec) { | |
596 | default: | |
597 | case FEC_1_2: | |
598 | case FEC_AUTO: | |
599 | f = 0; | |
600 | break; | |
601 | case FEC_2_3: | |
602 | f = 1; | |
603 | break; | |
604 | case FEC_3_4: | |
605 | f = 2; | |
606 | break; | |
607 | case FEC_5_6: | |
608 | f = 3; | |
609 | break; | |
610 | case FEC_7_8: | |
611 | f = 4; | |
612 | break; | |
613 | } | |
614 | ||
615 | switch (interleaving) { | |
616 | default: | |
617 | case GUARD_INTERVAL_1_4: | |
618 | i = 0; | |
619 | break; | |
620 | case GUARD_INTERVAL_1_8: | |
621 | i = 1; | |
622 | break; | |
623 | case GUARD_INTERVAL_1_16: | |
624 | i = 2; | |
625 | break; | |
626 | case GUARD_INTERVAL_1_32: | |
627 | i = 3; | |
628 | break; | |
629 | } | |
630 | ||
631 | /* Samples BER at BER_SAMPLING_RATE seconds */ | |
632 | rate = isdbt_rate[m][f][i] * segment * BER_SAMPLING_RATE; | |
633 | ||
634 | /* Avoids sampling too quickly or to overflow the register */ | |
635 | if (rate < 256) | |
636 | rate = 256; | |
637 | else if (rate > (1 << 24) - 1) | |
638 | rate = (1 << 24) - 1; | |
639 | ||
640 | dev_dbg(&state->i2c->dev, | |
641 | "%s: layer %c bitrate: %d kbps; counter = %d (0x%06x)\n", | |
642 | __func__, 'A' + layer, segment * isdbt_rate[m][f][i]/1000, | |
643 | rate, rate); | |
644 | ||
645 | state->estimated_rate[i] = rate; | |
646 | } | |
647 | ||
648 | ||
7c61d80a | 649 | static int mb86a20s_get_frontend(struct dvb_frontend *fe) |
b9ede79a | 650 | { |
959a119f | 651 | struct mb86a20s_state *state = fe->demodulator_priv; |
a77cfcac | 652 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
959a119f | 653 | int i, rc; |
b9ede79a | 654 | |
f66d81b5 MCC |
655 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
656 | ||
a77cfcac MCC |
657 | /* Reset frontend cache to default values */ |
658 | mb86a20s_reset_frontend_cache(fe); | |
959a119f | 659 | |
959a119f MCC |
660 | /* Check for partial reception */ |
661 | rc = mb86a20s_writereg(state, 0x6d, 0x85); | |
a77cfcac MCC |
662 | if (rc < 0) |
663 | return rc; | |
664 | rc = mb86a20s_readreg(state, 0x6e); | |
665 | if (rc < 0) | |
666 | return rc; | |
667 | c->isdbt_partial_reception = (rc & 0x10) ? 1 : 0; | |
959a119f MCC |
668 | |
669 | /* Get per-layer data */ | |
a77cfcac | 670 | |
4f62a20d | 671 | for (i = 0; i < NUM_LAYERS; i++) { |
f66d81b5 MCC |
672 | dev_dbg(&state->i2c->dev, "%s: getting data for layer %c.\n", |
673 | __func__, 'A' + i); | |
674 | ||
959a119f | 675 | rc = mb86a20s_get_segment_count(state, i); |
a77cfcac | 676 | if (rc < 0) |
f66d81b5 | 677 | goto noperlayer_error; |
d01a8ee3 | 678 | if (rc >= 0 && rc < 14) { |
a77cfcac | 679 | c->layer[i].segment_count = rc; |
d01a8ee3 | 680 | } else { |
a77cfcac | 681 | c->layer[i].segment_count = 0; |
d01a8ee3 | 682 | state->estimated_rate[i] = 0; |
959a119f | 683 | continue; |
a77cfcac MCC |
684 | } |
685 | c->isdbt_layer_enabled |= 1 << i; | |
959a119f | 686 | rc = mb86a20s_get_modulation(state, i); |
a77cfcac | 687 | if (rc < 0) |
f66d81b5 MCC |
688 | goto noperlayer_error; |
689 | dev_dbg(&state->i2c->dev, "%s: modulation %d.\n", | |
690 | __func__, rc); | |
a77cfcac | 691 | c->layer[i].modulation = rc; |
959a119f | 692 | rc = mb86a20s_get_fec(state, i); |
a77cfcac | 693 | if (rc < 0) |
f66d81b5 MCC |
694 | goto noperlayer_error; |
695 | dev_dbg(&state->i2c->dev, "%s: FEC %d.\n", | |
696 | __func__, rc); | |
a77cfcac | 697 | c->layer[i].fec = rc; |
959a119f | 698 | rc = mb86a20s_get_interleaving(state, i); |
a77cfcac | 699 | if (rc < 0) |
f66d81b5 MCC |
700 | goto noperlayer_error; |
701 | dev_dbg(&state->i2c->dev, "%s: interleaving %d.\n", | |
702 | __func__, rc); | |
a77cfcac | 703 | c->layer[i].interleaving = rc; |
d01a8ee3 MCC |
704 | mb86a20s_layer_bitrate(fe, i, c->layer[i].modulation, |
705 | c->layer[i].fec, | |
706 | c->layer[i].interleaving, | |
707 | c->layer[i].segment_count); | |
959a119f MCC |
708 | } |
709 | ||
959a119f | 710 | rc = mb86a20s_writereg(state, 0x6d, 0x84); |
a77cfcac MCC |
711 | if (rc < 0) |
712 | return rc; | |
713 | if ((rc & 0x60) == 0x20) { | |
714 | c->isdbt_sb_mode = 1; | |
959a119f | 715 | /* At least, one segment should exist */ |
a77cfcac MCC |
716 | if (!c->isdbt_sb_segment_count) |
717 | c->isdbt_sb_segment_count = 1; | |
718 | } | |
959a119f MCC |
719 | |
720 | /* Get transmission mode and guard interval */ | |
959a119f | 721 | rc = mb86a20s_readreg(state, 0x07); |
a77cfcac MCC |
722 | if (rc < 0) |
723 | return rc; | |
724 | if ((rc & 0x60) == 0x20) { | |
725 | switch (rc & 0x0c >> 2) { | |
726 | case 0: | |
727 | c->transmission_mode = TRANSMISSION_MODE_2K; | |
728 | break; | |
729 | case 1: | |
730 | c->transmission_mode = TRANSMISSION_MODE_4K; | |
731 | break; | |
732 | case 2: | |
733 | c->transmission_mode = TRANSMISSION_MODE_8K; | |
734 | break; | |
959a119f | 735 | } |
a77cfcac MCC |
736 | } |
737 | if (!(rc & 0x10)) { | |
738 | switch (rc & 0x3) { | |
739 | case 0: | |
740 | c->guard_interval = GUARD_INTERVAL_1_4; | |
741 | break; | |
742 | case 1: | |
743 | c->guard_interval = GUARD_INTERVAL_1_8; | |
744 | break; | |
745 | case 2: | |
746 | c->guard_interval = GUARD_INTERVAL_1_16; | |
747 | break; | |
959a119f MCC |
748 | } |
749 | } | |
09b6d21e | 750 | return 0; |
959a119f | 751 | |
f66d81b5 | 752 | noperlayer_error: |
b9ede79a | 753 | |
09b6d21e MCC |
754 | /* per-layer info is incomplete; discard all per-layer */ |
755 | c->isdbt_layer_enabled = 0; | |
756 | ||
757 | return rc; | |
758 | } | |
759 | ||
760 | static int mb86a20s_reset_counters(struct dvb_frontend *fe) | |
761 | { | |
762 | struct mb86a20s_state *state = fe->demodulator_priv; | |
763 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
764 | int rc, val; | |
765 | ||
766 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); | |
767 | ||
768 | /* Reset the counters, if the channel changed */ | |
769 | if (state->last_frequency != c->frequency) { | |
09b6d21e MCC |
770 | memset(&c->cnr, 0, sizeof(c->cnr)); |
771 | memset(&c->pre_bit_error, 0, sizeof(c->pre_bit_error)); | |
772 | memset(&c->pre_bit_count, 0, sizeof(c->pre_bit_count)); | |
d9b6f08a MCC |
773 | memset(&c->post_bit_error, 0, sizeof(c->post_bit_error)); |
774 | memset(&c->post_bit_count, 0, sizeof(c->post_bit_count)); | |
09b6d21e MCC |
775 | memset(&c->block_error, 0, sizeof(c->block_error)); |
776 | memset(&c->block_count, 0, sizeof(c->block_count)); | |
777 | ||
778 | state->last_frequency = c->frequency; | |
779 | } | |
780 | ||
781 | /* Clear status for most stats */ | |
782 | ||
d9b6f08a MCC |
783 | /* BER/PER counter reset */ |
784 | rc = mb86a20s_writeregdata(state, mb86a20s_per_ber_reset); | |
09b6d21e MCC |
785 | if (rc < 0) |
786 | goto err; | |
787 | ||
788 | /* CNR counter reset */ | |
789 | rc = mb86a20s_readreg(state, 0x45); | |
790 | if (rc < 0) | |
791 | goto err; | |
792 | val = rc; | |
793 | rc = mb86a20s_writereg(state, 0x45, val | 0x10); | |
794 | if (rc < 0) | |
795 | goto err; | |
796 | rc = mb86a20s_writereg(state, 0x45, val & 0x6f); | |
797 | if (rc < 0) | |
798 | goto err; | |
799 | ||
800 | /* MER counter reset */ | |
801 | rc = mb86a20s_writereg(state, 0x50, 0x50); | |
802 | if (rc < 0) | |
803 | goto err; | |
804 | rc = mb86a20s_readreg(state, 0x51); | |
805 | if (rc < 0) | |
806 | goto err; | |
807 | val = rc; | |
808 | rc = mb86a20s_writereg(state, 0x51, val | 0x01); | |
809 | if (rc < 0) | |
810 | goto err; | |
811 | rc = mb86a20s_writereg(state, 0x51, val & 0x06); | |
812 | if (rc < 0) | |
813 | goto err; | |
814 | ||
149d518a | 815 | goto ok; |
09b6d21e | 816 | err: |
149d518a MCC |
817 | dev_err(&state->i2c->dev, |
818 | "%s: Can't reset FE statistics (error %d).\n", | |
819 | __func__, rc); | |
820 | ok: | |
a77cfcac | 821 | return rc; |
09b6d21e MCC |
822 | } |
823 | ||
ad0abbf1 MCC |
824 | static int mb86a20s_get_pre_ber(struct dvb_frontend *fe, |
825 | unsigned layer, | |
826 | u32 *error, u32 *count) | |
149d518a MCC |
827 | { |
828 | struct mb86a20s_state *state = fe->demodulator_priv; | |
ad0abbf1 | 829 | int rc, val; |
149d518a MCC |
830 | |
831 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); | |
832 | ||
4f62a20d | 833 | if (layer >= NUM_LAYERS) |
149d518a MCC |
834 | return -EINVAL; |
835 | ||
836 | /* Check if the BER measures are already available */ | |
837 | rc = mb86a20s_readreg(state, 0x54); | |
838 | if (rc < 0) | |
839 | return rc; | |
840 | ||
841 | /* Check if data is available for that layer */ | |
842 | if (!(rc & (1 << layer))) { | |
843 | dev_dbg(&state->i2c->dev, | |
ad0abbf1 | 844 | "%s: preBER for layer %c is not available yet.\n", |
149d518a MCC |
845 | __func__, 'A' + layer); |
846 | return -EBUSY; | |
847 | } | |
848 | ||
849 | /* Read Bit Error Count */ | |
850 | rc = mb86a20s_readreg(state, 0x55 + layer * 3); | |
851 | if (rc < 0) | |
852 | return rc; | |
853 | *error = rc << 16; | |
854 | rc = mb86a20s_readreg(state, 0x56 + layer * 3); | |
855 | if (rc < 0) | |
856 | return rc; | |
857 | *error |= rc << 8; | |
858 | rc = mb86a20s_readreg(state, 0x57 + layer * 3); | |
859 | if (rc < 0) | |
860 | return rc; | |
861 | *error |= rc; | |
862 | ||
863 | dev_dbg(&state->i2c->dev, | |
864 | "%s: bit error before Viterbi for layer %c: %d.\n", | |
865 | __func__, 'A' + layer, *error); | |
866 | ||
867 | /* Read Bit Count */ | |
868 | rc = mb86a20s_writereg(state, 0x50, 0xa7 + layer * 3); | |
869 | if (rc < 0) | |
870 | return rc; | |
871 | rc = mb86a20s_readreg(state, 0x51); | |
872 | if (rc < 0) | |
873 | return rc; | |
874 | *count = rc << 16; | |
875 | rc = mb86a20s_writereg(state, 0x50, 0xa8 + layer * 3); | |
876 | if (rc < 0) | |
877 | return rc; | |
878 | rc = mb86a20s_readreg(state, 0x51); | |
879 | if (rc < 0) | |
880 | return rc; | |
881 | *count |= rc << 8; | |
882 | rc = mb86a20s_writereg(state, 0x50, 0xa9 + layer * 3); | |
883 | if (rc < 0) | |
884 | return rc; | |
885 | rc = mb86a20s_readreg(state, 0x51); | |
886 | if (rc < 0) | |
887 | return rc; | |
888 | *count |= rc; | |
889 | ||
890 | dev_dbg(&state->i2c->dev, | |
891 | "%s: bit count before Viterbi for layer %c: %d.\n", | |
892 | __func__, 'A' + layer, *count); | |
893 | ||
894 | ||
d01a8ee3 MCC |
895 | /* |
896 | * As we get TMCC data from the frontend, we can better estimate the | |
897 | * BER bit counters, in order to do the BER measure during a longer | |
898 | * time. Use those data, if available, to update the bit count | |
899 | * measure. | |
900 | */ | |
901 | ||
902 | if (state->estimated_rate[layer] | |
903 | && state->estimated_rate[layer] != *count) { | |
904 | dev_dbg(&state->i2c->dev, | |
ad0abbf1 | 905 | "%s: updating layer %c preBER counter to %d.\n", |
d01a8ee3 | 906 | __func__, 'A' + layer, state->estimated_rate[layer]); |
ad0abbf1 MCC |
907 | |
908 | /* Turn off BER before Viterbi */ | |
909 | rc = mb86a20s_writereg(state, 0x52, 0x00); | |
910 | ||
911 | /* Update counter for this layer */ | |
d01a8ee3 MCC |
912 | rc = mb86a20s_writereg(state, 0x50, 0xa7 + layer * 3); |
913 | if (rc < 0) | |
914 | return rc; | |
915 | rc = mb86a20s_writereg(state, 0x51, | |
916 | state->estimated_rate[layer] >> 16); | |
917 | if (rc < 0) | |
918 | return rc; | |
919 | rc = mb86a20s_writereg(state, 0x50, 0xa8 + layer * 3); | |
920 | if (rc < 0) | |
921 | return rc; | |
922 | rc = mb86a20s_writereg(state, 0x51, | |
923 | state->estimated_rate[layer] >> 8); | |
924 | if (rc < 0) | |
925 | return rc; | |
926 | rc = mb86a20s_writereg(state, 0x50, 0xa9 + layer * 3); | |
927 | if (rc < 0) | |
928 | return rc; | |
929 | rc = mb86a20s_writereg(state, 0x51, | |
930 | state->estimated_rate[layer]); | |
931 | if (rc < 0) | |
932 | return rc; | |
ad0abbf1 MCC |
933 | |
934 | /* Turn on BER before Viterbi */ | |
935 | rc = mb86a20s_writereg(state, 0x52, 0x01); | |
936 | ||
937 | /* Reset all preBER counters */ | |
938 | rc = mb86a20s_writereg(state, 0x53, 0x00); | |
939 | if (rc < 0) | |
940 | return rc; | |
941 | rc = mb86a20s_writereg(state, 0x53, 0x07); | |
942 | } else { | |
943 | /* Reset counter to collect new data */ | |
944 | rc = mb86a20s_readreg(state, 0x53); | |
945 | if (rc < 0) | |
946 | return rc; | |
947 | val = rc; | |
948 | rc = mb86a20s_writereg(state, 0x53, val & ~(1 << layer)); | |
949 | if (rc < 0) | |
950 | return rc; | |
951 | rc = mb86a20s_writereg(state, 0x53, val | (1 << layer)); | |
d01a8ee3 MCC |
952 | } |
953 | ||
d9b6f08a MCC |
954 | return rc; |
955 | } | |
956 | ||
957 | static int mb86a20s_get_post_ber(struct dvb_frontend *fe, | |
958 | unsigned layer, | |
959 | u32 *error, u32 *count) | |
960 | { | |
961 | struct mb86a20s_state *state = fe->demodulator_priv; | |
962 | u32 counter, collect_rate; | |
963 | int rc, val; | |
964 | ||
965 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); | |
966 | ||
4f62a20d | 967 | if (layer >= NUM_LAYERS) |
d9b6f08a MCC |
968 | return -EINVAL; |
969 | ||
970 | /* Check if the BER measures are already available */ | |
971 | rc = mb86a20s_readreg(state, 0x60); | |
972 | if (rc < 0) | |
973 | return rc; | |
974 | ||
975 | /* Check if data is available for that layer */ | |
976 | if (!(rc & (1 << layer))) { | |
977 | dev_dbg(&state->i2c->dev, | |
978 | "%s: post BER for layer %c is not available yet.\n", | |
979 | __func__, 'A' + layer); | |
980 | return -EBUSY; | |
981 | } | |
d01a8ee3 | 982 | |
d9b6f08a MCC |
983 | /* Read Bit Error Count */ |
984 | rc = mb86a20s_readreg(state, 0x64 + layer * 3); | |
985 | if (rc < 0) | |
986 | return rc; | |
987 | *error = rc << 16; | |
988 | rc = mb86a20s_readreg(state, 0x65 + layer * 3); | |
989 | if (rc < 0) | |
990 | return rc; | |
991 | *error |= rc << 8; | |
992 | rc = mb86a20s_readreg(state, 0x66 + layer * 3); | |
993 | if (rc < 0) | |
994 | return rc; | |
995 | *error |= rc; | |
996 | ||
997 | dev_dbg(&state->i2c->dev, | |
998 | "%s: post bit error for layer %c: %d.\n", | |
999 | __func__, 'A' + layer, *error); | |
1000 | ||
1001 | /* Read Bit Count */ | |
1002 | rc = mb86a20s_writereg(state, 0x50, 0xdc + layer * 2); | |
1003 | if (rc < 0) | |
1004 | return rc; | |
1005 | rc = mb86a20s_readreg(state, 0x51); | |
1006 | if (rc < 0) | |
1007 | return rc; | |
1008 | counter = rc << 8; | |
1009 | rc = mb86a20s_writereg(state, 0x50, 0xdd + layer * 2); | |
1010 | if (rc < 0) | |
1011 | return rc; | |
1012 | rc = mb86a20s_readreg(state, 0x51); | |
1013 | if (rc < 0) | |
1014 | return rc; | |
1015 | counter |= rc; | |
1016 | *count = counter * 204 * 8; | |
1017 | ||
1018 | dev_dbg(&state->i2c->dev, | |
1019 | "%s: post bit count for layer %c: %d.\n", | |
1020 | __func__, 'A' + layer, *count); | |
1021 | ||
1022 | /* | |
1023 | * As we get TMCC data from the frontend, we can better estimate the | |
1024 | * BER bit counters, in order to do the BER measure during a longer | |
1025 | * time. Use those data, if available, to update the bit count | |
1026 | * measure. | |
1027 | */ | |
1028 | ||
1029 | if (!state->estimated_rate[layer]) | |
1030 | goto reset_measurement; | |
1031 | ||
1032 | collect_rate = state->estimated_rate[layer] / 204 / 8; | |
1033 | if (collect_rate < 32) | |
1034 | collect_rate = 32; | |
1035 | if (collect_rate > 65535) | |
1036 | collect_rate = 65535; | |
1037 | if (collect_rate != counter) { | |
1038 | dev_dbg(&state->i2c->dev, | |
1039 | "%s: updating postBER counter on layer %c to %d.\n", | |
1040 | __func__, 'A' + layer, collect_rate); | |
1041 | ||
1042 | /* Turn off BER after Viterbi */ | |
1043 | rc = mb86a20s_writereg(state, 0x5e, 0x00); | |
1044 | ||
1045 | /* Update counter for this layer */ | |
1046 | rc = mb86a20s_writereg(state, 0x50, 0xdc + layer * 2); | |
1047 | if (rc < 0) | |
1048 | return rc; | |
1049 | rc = mb86a20s_writereg(state, 0x51, collect_rate >> 8); | |
1050 | if (rc < 0) | |
1051 | return rc; | |
1052 | rc = mb86a20s_writereg(state, 0x50, 0xdd + layer * 2); | |
1053 | if (rc < 0) | |
1054 | return rc; | |
1055 | rc = mb86a20s_writereg(state, 0x51, collect_rate & 0xff); | |
1056 | if (rc < 0) | |
1057 | return rc; | |
1058 | ||
1059 | /* Turn on BER after Viterbi */ | |
1060 | rc = mb86a20s_writereg(state, 0x5e, 0x07); | |
1061 | ||
1062 | /* Reset all preBER counters */ | |
1063 | rc = mb86a20s_writereg(state, 0x5f, 0x00); | |
1064 | if (rc < 0) | |
1065 | return rc; | |
1066 | rc = mb86a20s_writereg(state, 0x5f, 0x07); | |
1067 | ||
1068 | return rc; | |
1069 | } | |
1070 | ||
1071 | reset_measurement: | |
149d518a | 1072 | /* Reset counter to collect new data */ |
ad0abbf1 MCC |
1073 | rc = mb86a20s_readreg(state, 0x5f); |
1074 | if (rc < 0) | |
1075 | return rc; | |
1076 | val = rc; | |
1077 | rc = mb86a20s_writereg(state, 0x5f, val & ~(1 << layer)); | |
149d518a MCC |
1078 | if (rc < 0) |
1079 | return rc; | |
d9b6f08a | 1080 | rc = mb86a20s_writereg(state, 0x5f, val | (1 << layer)); |
149d518a | 1081 | |
ad0abbf1 | 1082 | return rc; |
149d518a MCC |
1083 | } |
1084 | ||
593ae89a MCC |
1085 | static int mb86a20s_get_blk_error(struct dvb_frontend *fe, |
1086 | unsigned layer, | |
1087 | u32 *error, u32 *count) | |
1088 | { | |
1089 | struct mb86a20s_state *state = fe->demodulator_priv; | |
313cf4ef | 1090 | int rc, val; |
593ae89a MCC |
1091 | u32 collect_rate; |
1092 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); | |
1093 | ||
4f62a20d | 1094 | if (layer >= NUM_LAYERS) |
593ae89a MCC |
1095 | return -EINVAL; |
1096 | ||
1097 | /* Check if the PER measures are already available */ | |
1098 | rc = mb86a20s_writereg(state, 0x50, 0xb8); | |
1099 | if (rc < 0) | |
1100 | return rc; | |
1101 | rc = mb86a20s_readreg(state, 0x51); | |
1102 | if (rc < 0) | |
1103 | return rc; | |
1104 | ||
1105 | /* Check if data is available for that layer */ | |
1106 | ||
1107 | if (!(rc & (1 << layer))) { | |
1108 | dev_dbg(&state->i2c->dev, | |
1109 | "%s: block counts for layer %c aren't available yet.\n", | |
1110 | __func__, 'A' + layer); | |
1111 | return -EBUSY; | |
1112 | } | |
1113 | ||
1114 | /* Read Packet error Count */ | |
1115 | rc = mb86a20s_writereg(state, 0x50, 0xb9 + layer * 2); | |
1116 | if (rc < 0) | |
1117 | return rc; | |
1118 | rc = mb86a20s_readreg(state, 0x51); | |
1119 | if (rc < 0) | |
1120 | return rc; | |
1121 | *error = rc << 8; | |
1122 | rc = mb86a20s_writereg(state, 0x50, 0xba + layer * 2); | |
1123 | if (rc < 0) | |
1124 | return rc; | |
1125 | rc = mb86a20s_readreg(state, 0x51); | |
1126 | if (rc < 0) | |
1127 | return rc; | |
1128 | *error |= rc; | |
d56e326f | 1129 | dev_dbg(&state->i2c->dev, "%s: block error for layer %c: %d.\n", |
593ae89a MCC |
1130 | __func__, 'A' + layer, *error); |
1131 | ||
1132 | /* Read Bit Count */ | |
1133 | rc = mb86a20s_writereg(state, 0x50, 0xb2 + layer * 2); | |
1134 | if (rc < 0) | |
1135 | return rc; | |
1136 | rc = mb86a20s_readreg(state, 0x51); | |
1137 | if (rc < 0) | |
1138 | return rc; | |
1139 | *count = rc << 8; | |
1140 | rc = mb86a20s_writereg(state, 0x50, 0xb3 + layer * 2); | |
1141 | if (rc < 0) | |
1142 | return rc; | |
1143 | rc = mb86a20s_readreg(state, 0x51); | |
1144 | if (rc < 0) | |
1145 | return rc; | |
1146 | *count |= rc; | |
1147 | ||
1148 | dev_dbg(&state->i2c->dev, | |
1149 | "%s: block count for layer %c: %d.\n", | |
1150 | __func__, 'A' + layer, *count); | |
1151 | ||
1152 | /* | |
1153 | * As we get TMCC data from the frontend, we can better estimate the | |
1154 | * BER bit counters, in order to do the BER measure during a longer | |
1155 | * time. Use those data, if available, to update the bit count | |
1156 | * measure. | |
1157 | */ | |
1158 | ||
1159 | if (!state->estimated_rate[layer]) | |
1160 | goto reset_measurement; | |
1161 | ||
1162 | collect_rate = state->estimated_rate[layer] / 204 / 8; | |
593ae89a MCC |
1163 | if (collect_rate < 32) |
1164 | collect_rate = 32; | |
1165 | if (collect_rate > 65535) | |
1166 | collect_rate = 65535; | |
1167 | ||
1168 | if (collect_rate != *count) { | |
1169 | dev_dbg(&state->i2c->dev, | |
1170 | "%s: updating PER counter on layer %c to %d.\n", | |
1171 | __func__, 'A' + layer, collect_rate); | |
313cf4ef MCC |
1172 | |
1173 | /* Stop PER measurement */ | |
1174 | rc = mb86a20s_writereg(state, 0x50, 0xb0); | |
1175 | if (rc < 0) | |
1176 | return rc; | |
1177 | rc = mb86a20s_writereg(state, 0x51, 0x00); | |
1178 | if (rc < 0) | |
1179 | return rc; | |
1180 | ||
1181 | /* Update this layer's counter */ | |
593ae89a MCC |
1182 | rc = mb86a20s_writereg(state, 0x50, 0xb2 + layer * 2); |
1183 | if (rc < 0) | |
1184 | return rc; | |
1185 | rc = mb86a20s_writereg(state, 0x51, collect_rate >> 8); | |
1186 | if (rc < 0) | |
1187 | return rc; | |
1188 | rc = mb86a20s_writereg(state, 0x50, 0xb3 + layer * 2); | |
1189 | if (rc < 0) | |
1190 | return rc; | |
1191 | rc = mb86a20s_writereg(state, 0x51, collect_rate & 0xff); | |
1192 | if (rc < 0) | |
1193 | return rc; | |
313cf4ef MCC |
1194 | |
1195 | /* start PER measurement */ | |
1196 | rc = mb86a20s_writereg(state, 0x50, 0xb0); | |
1197 | if (rc < 0) | |
1198 | return rc; | |
1199 | rc = mb86a20s_writereg(state, 0x51, 0x07); | |
1200 | if (rc < 0) | |
1201 | return rc; | |
1202 | ||
1203 | /* Reset all counters to collect new data */ | |
1204 | rc = mb86a20s_writereg(state, 0x50, 0xb1); | |
1205 | if (rc < 0) | |
1206 | return rc; | |
1207 | rc = mb86a20s_writereg(state, 0x51, 0x07); | |
1208 | if (rc < 0) | |
1209 | return rc; | |
1210 | rc = mb86a20s_writereg(state, 0x51, 0x00); | |
1211 | ||
1212 | return rc; | |
593ae89a MCC |
1213 | } |
1214 | ||
1215 | reset_measurement: | |
1216 | /* Reset counter to collect new data */ | |
1217 | rc = mb86a20s_writereg(state, 0x50, 0xb1); | |
1218 | if (rc < 0) | |
1219 | return rc; | |
313cf4ef | 1220 | rc = mb86a20s_readreg(state, 0x51); |
593ae89a MCC |
1221 | if (rc < 0) |
1222 | return rc; | |
313cf4ef MCC |
1223 | val = rc; |
1224 | rc = mb86a20s_writereg(state, 0x51, val | (1 << layer)); | |
593ae89a MCC |
1225 | if (rc < 0) |
1226 | return rc; | |
313cf4ef | 1227 | rc = mb86a20s_writereg(state, 0x51, val & ~(1 << layer)); |
593ae89a | 1228 | |
313cf4ef | 1229 | return rc; |
593ae89a MCC |
1230 | } |
1231 | ||
25188bd0 MCC |
1232 | struct linear_segments { |
1233 | unsigned x, y; | |
1234 | }; | |
1235 | ||
1236 | /* | |
1237 | * All tables below return a dB/1000 measurement | |
1238 | */ | |
1239 | ||
1240 | static struct linear_segments cnr_to_db_table[] = { | |
1241 | { 19648, 0}, | |
1242 | { 18187, 1000}, | |
1243 | { 16534, 2000}, | |
1244 | { 14823, 3000}, | |
1245 | { 13161, 4000}, | |
1246 | { 11622, 5000}, | |
1247 | { 10279, 6000}, | |
1248 | { 9089, 7000}, | |
1249 | { 8042, 8000}, | |
1250 | { 7137, 9000}, | |
1251 | { 6342, 10000}, | |
1252 | { 5641, 11000}, | |
1253 | { 5030, 12000}, | |
1254 | { 4474, 13000}, | |
1255 | { 3988, 14000}, | |
1256 | { 3556, 15000}, | |
1257 | { 3180, 16000}, | |
1258 | { 2841, 17000}, | |
1259 | { 2541, 18000}, | |
1260 | { 2276, 19000}, | |
1261 | { 2038, 20000}, | |
1262 | { 1800, 21000}, | |
1263 | { 1625, 22000}, | |
1264 | { 1462, 23000}, | |
1265 | { 1324, 24000}, | |
1266 | { 1175, 25000}, | |
1267 | { 1063, 26000}, | |
1268 | { 980, 27000}, | |
1269 | { 907, 28000}, | |
1270 | { 840, 29000}, | |
1271 | { 788, 30000}, | |
1272 | }; | |
1273 | ||
1274 | static struct linear_segments cnr_64qam_table[] = { | |
1275 | { 3922688, 0}, | |
1276 | { 3920384, 1000}, | |
1277 | { 3902720, 2000}, | |
1278 | { 3894784, 3000}, | |
1279 | { 3882496, 4000}, | |
1280 | { 3872768, 5000}, | |
1281 | { 3858944, 6000}, | |
1282 | { 3851520, 7000}, | |
1283 | { 3838976, 8000}, | |
1284 | { 3829248, 9000}, | |
1285 | { 3818240, 10000}, | |
1286 | { 3806976, 11000}, | |
1287 | { 3791872, 12000}, | |
1288 | { 3767040, 13000}, | |
1289 | { 3720960, 14000}, | |
1290 | { 3637504, 15000}, | |
1291 | { 3498496, 16000}, | |
1292 | { 3296000, 17000}, | |
1293 | { 3031040, 18000}, | |
1294 | { 2715392, 19000}, | |
1295 | { 2362624, 20000}, | |
1296 | { 1963264, 21000}, | |
1297 | { 1649664, 22000}, | |
1298 | { 1366784, 23000}, | |
1299 | { 1120768, 24000}, | |
1300 | { 890880, 25000}, | |
1301 | { 723456, 26000}, | |
1302 | { 612096, 27000}, | |
1303 | { 518912, 28000}, | |
1304 | { 448256, 29000}, | |
1305 | { 388864, 30000}, | |
1306 | }; | |
1307 | ||
1308 | static struct linear_segments cnr_16qam_table[] = { | |
1309 | { 5314816, 0}, | |
1310 | { 5219072, 1000}, | |
1311 | { 5118720, 2000}, | |
1312 | { 4998912, 3000}, | |
1313 | { 4875520, 4000}, | |
1314 | { 4736000, 5000}, | |
1315 | { 4604160, 6000}, | |
1316 | { 4458752, 7000}, | |
1317 | { 4300288, 8000}, | |
1318 | { 4092928, 9000}, | |
1319 | { 3836160, 10000}, | |
1320 | { 3521024, 11000}, | |
1321 | { 3155968, 12000}, | |
1322 | { 2756864, 13000}, | |
1323 | { 2347008, 14000}, | |
1324 | { 1955072, 15000}, | |
1325 | { 1593600, 16000}, | |
1326 | { 1297920, 17000}, | |
1327 | { 1043968, 18000}, | |
1328 | { 839680, 19000}, | |
1329 | { 672256, 20000}, | |
1330 | { 523008, 21000}, | |
1331 | { 424704, 22000}, | |
1332 | { 345088, 23000}, | |
1333 | { 280064, 24000}, | |
1334 | { 221440, 25000}, | |
1335 | { 179712, 26000}, | |
1336 | { 151040, 27000}, | |
1337 | { 128512, 28000}, | |
1338 | { 110080, 29000}, | |
1339 | { 95744, 30000}, | |
1340 | }; | |
1341 | ||
1342 | struct linear_segments cnr_qpsk_table[] = { | |
1343 | { 2834176, 0}, | |
1344 | { 2683648, 1000}, | |
1345 | { 2536960, 2000}, | |
1346 | { 2391808, 3000}, | |
1347 | { 2133248, 4000}, | |
1348 | { 1906176, 5000}, | |
1349 | { 1666560, 6000}, | |
1350 | { 1422080, 7000}, | |
1351 | { 1189632, 8000}, | |
1352 | { 976384, 9000}, | |
1353 | { 790272, 10000}, | |
1354 | { 633344, 11000}, | |
1355 | { 505600, 12000}, | |
1356 | { 402944, 13000}, | |
1357 | { 320768, 14000}, | |
1358 | { 255488, 15000}, | |
1359 | { 204032, 16000}, | |
1360 | { 163072, 17000}, | |
1361 | { 130304, 18000}, | |
1362 | { 105216, 19000}, | |
1363 | { 83456, 20000}, | |
1364 | { 65024, 21000}, | |
1365 | { 52480, 22000}, | |
1366 | { 42752, 23000}, | |
1367 | { 34560, 24000}, | |
1368 | { 27136, 25000}, | |
1369 | { 22016, 26000}, | |
1370 | { 18432, 27000}, | |
1371 | { 15616, 28000}, | |
1372 | { 13312, 29000}, | |
1373 | { 11520, 30000}, | |
1374 | }; | |
1375 | ||
1376 | static u32 interpolate_value(u32 value, struct linear_segments *segments, | |
1377 | unsigned len) | |
1378 | { | |
1379 | u64 tmp64; | |
1380 | u32 dx, dy; | |
1381 | int i, ret; | |
1382 | ||
1383 | if (value >= segments[0].x) | |
1384 | return segments[0].y; | |
1385 | if (value < segments[len-1].x) | |
1386 | return segments[len-1].y; | |
1387 | ||
1388 | for (i = 1; i < len - 1; i++) { | |
1389 | /* If value is identical, no need to interpolate */ | |
1390 | if (value == segments[i].x) | |
1391 | return segments[i].y; | |
1392 | if (value > segments[i].x) | |
1393 | break; | |
1394 | } | |
1395 | ||
1396 | /* Linear interpolation between the two (x,y) points */ | |
1397 | dy = segments[i].y - segments[i - 1].y; | |
1398 | dx = segments[i - 1].x - segments[i].x; | |
1399 | tmp64 = value - segments[i].x; | |
1400 | tmp64 *= dy; | |
1401 | do_div(tmp64, dx); | |
1402 | ret = segments[i].y - tmp64; | |
1403 | ||
1404 | return ret; | |
1405 | } | |
1406 | ||
1407 | static int mb86a20s_get_main_CNR(struct dvb_frontend *fe) | |
1408 | { | |
1409 | struct mb86a20s_state *state = fe->demodulator_priv; | |
1410 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1411 | u32 cnr_linear, cnr; | |
1412 | int rc, val; | |
1413 | ||
1414 | /* Check if CNR is available */ | |
1415 | rc = mb86a20s_readreg(state, 0x45); | |
1416 | if (rc < 0) | |
1417 | return rc; | |
1418 | ||
1419 | if (!(rc & 0x40)) { | |
d56e326f | 1420 | dev_dbg(&state->i2c->dev, "%s: CNR is not available yet.\n", |
25188bd0 MCC |
1421 | __func__); |
1422 | return -EBUSY; | |
1423 | } | |
1424 | val = rc; | |
1425 | ||
1426 | rc = mb86a20s_readreg(state, 0x46); | |
1427 | if (rc < 0) | |
1428 | return rc; | |
1429 | cnr_linear = rc << 8; | |
1430 | ||
1431 | rc = mb86a20s_readreg(state, 0x46); | |
1432 | if (rc < 0) | |
1433 | return rc; | |
1434 | cnr_linear |= rc; | |
1435 | ||
1436 | cnr = interpolate_value(cnr_linear, | |
1437 | cnr_to_db_table, ARRAY_SIZE(cnr_to_db_table)); | |
1438 | ||
1439 | c->cnr.stat[0].scale = FE_SCALE_DECIBEL; | |
1440 | c->cnr.stat[0].svalue = cnr; | |
1441 | ||
1442 | dev_dbg(&state->i2c->dev, "%s: CNR is %d.%03d dB (%d)\n", | |
1443 | __func__, cnr / 1000, cnr % 1000, cnr_linear); | |
1444 | ||
1445 | /* CNR counter reset */ | |
1446 | rc = mb86a20s_writereg(state, 0x45, val | 0x10); | |
1447 | if (rc < 0) | |
1448 | return rc; | |
1449 | rc = mb86a20s_writereg(state, 0x45, val & 0x6f); | |
1450 | ||
1451 | return rc; | |
1452 | } | |
1453 | ||
593ae89a | 1454 | static int mb86a20s_get_blk_error_layer_CNR(struct dvb_frontend *fe) |
25188bd0 MCC |
1455 | { |
1456 | struct mb86a20s_state *state = fe->demodulator_priv; | |
1457 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1458 | u32 mer, cnr; | |
1459 | int rc, val, i; | |
1460 | struct linear_segments *segs; | |
1461 | unsigned segs_len; | |
1462 | ||
1463 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); | |
1464 | ||
1465 | /* Check if the measures are already available */ | |
1466 | rc = mb86a20s_writereg(state, 0x50, 0x5b); | |
1467 | if (rc < 0) | |
1468 | return rc; | |
1469 | rc = mb86a20s_readreg(state, 0x51); | |
1470 | if (rc < 0) | |
1471 | return rc; | |
1472 | ||
1473 | /* Check if data is available */ | |
1474 | if (!(rc & 0x01)) { | |
d56e326f | 1475 | dev_dbg(&state->i2c->dev, |
25188bd0 MCC |
1476 | "%s: MER measures aren't available yet.\n", __func__); |
1477 | return -EBUSY; | |
1478 | } | |
1479 | ||
1480 | /* Read all layers */ | |
4f62a20d | 1481 | for (i = 0; i < NUM_LAYERS; i++) { |
25188bd0 MCC |
1482 | if (!(c->isdbt_layer_enabled & (1 << i))) { |
1483 | c->cnr.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1484 | continue; | |
1485 | } | |
1486 | ||
1487 | rc = mb86a20s_writereg(state, 0x50, 0x52 + i * 3); | |
1488 | if (rc < 0) | |
1489 | return rc; | |
1490 | rc = mb86a20s_readreg(state, 0x51); | |
1491 | if (rc < 0) | |
1492 | return rc; | |
1493 | mer = rc << 16; | |
1494 | rc = mb86a20s_writereg(state, 0x50, 0x53 + i * 3); | |
1495 | if (rc < 0) | |
1496 | return rc; | |
1497 | rc = mb86a20s_readreg(state, 0x51); | |
1498 | if (rc < 0) | |
1499 | return rc; | |
1500 | mer |= rc << 8; | |
1501 | rc = mb86a20s_writereg(state, 0x50, 0x54 + i * 3); | |
1502 | if (rc < 0) | |
1503 | return rc; | |
1504 | rc = mb86a20s_readreg(state, 0x51); | |
1505 | if (rc < 0) | |
1506 | return rc; | |
1507 | mer |= rc; | |
1508 | ||
1509 | switch (c->layer[i].modulation) { | |
1510 | case DQPSK: | |
1511 | case QPSK: | |
1512 | segs = cnr_qpsk_table; | |
1513 | segs_len = ARRAY_SIZE(cnr_qpsk_table); | |
1514 | break; | |
1515 | case QAM_16: | |
1516 | segs = cnr_16qam_table; | |
1517 | segs_len = ARRAY_SIZE(cnr_16qam_table); | |
1518 | break; | |
1519 | default: | |
1520 | case QAM_64: | |
1521 | segs = cnr_64qam_table; | |
1522 | segs_len = ARRAY_SIZE(cnr_64qam_table); | |
1523 | break; | |
1524 | } | |
1525 | cnr = interpolate_value(mer, segs, segs_len); | |
1526 | ||
1527 | c->cnr.stat[1 + i].scale = FE_SCALE_DECIBEL; | |
1528 | c->cnr.stat[1 + i].svalue = cnr; | |
1529 | ||
1530 | dev_dbg(&state->i2c->dev, | |
1531 | "%s: CNR for layer %c is %d.%03d dB (MER = %d).\n", | |
1532 | __func__, 'A' + i, cnr / 1000, cnr % 1000, mer); | |
1533 | ||
1534 | } | |
1535 | ||
1536 | /* Start a new MER measurement */ | |
1537 | /* MER counter reset */ | |
1538 | rc = mb86a20s_writereg(state, 0x50, 0x50); | |
1539 | if (rc < 0) | |
1540 | return rc; | |
1541 | rc = mb86a20s_readreg(state, 0x51); | |
1542 | if (rc < 0) | |
1543 | return rc; | |
1544 | val = rc; | |
1545 | ||
1546 | rc = mb86a20s_writereg(state, 0x51, val | 0x01); | |
1547 | if (rc < 0) | |
1548 | return rc; | |
1549 | rc = mb86a20s_writereg(state, 0x51, val & 0x06); | |
1550 | if (rc < 0) | |
1551 | return rc; | |
1552 | ||
1553 | return 0; | |
1554 | } | |
1555 | ||
09b6d21e MCC |
1556 | static void mb86a20s_stats_not_ready(struct dvb_frontend *fe) |
1557 | { | |
1558 | struct mb86a20s_state *state = fe->demodulator_priv; | |
1559 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1560 | int i; | |
1561 | ||
1562 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); | |
a77cfcac | 1563 | |
09b6d21e MCC |
1564 | /* Fill the length of each status counter */ |
1565 | ||
1566 | /* Only global stats */ | |
1567 | c->strength.len = 1; | |
1568 | ||
1569 | /* Per-layer stats - 3 layers + global */ | |
4f62a20d MCC |
1570 | c->cnr.len = NUM_LAYERS + 1; |
1571 | c->pre_bit_error.len = NUM_LAYERS + 1; | |
1572 | c->pre_bit_count.len = NUM_LAYERS + 1; | |
1573 | c->post_bit_error.len = NUM_LAYERS + 1; | |
1574 | c->post_bit_count.len = NUM_LAYERS + 1; | |
1575 | c->block_error.len = NUM_LAYERS + 1; | |
1576 | c->block_count.len = NUM_LAYERS + 1; | |
09b6d21e MCC |
1577 | |
1578 | /* Signal is always available */ | |
1579 | c->strength.stat[0].scale = FE_SCALE_RELATIVE; | |
1580 | c->strength.stat[0].uvalue = 0; | |
1581 | ||
1582 | /* Put all of them at FE_SCALE_NOT_AVAILABLE */ | |
4f62a20d | 1583 | for (i = 0; i < NUM_LAYERS + 1; i++) { |
09b6d21e MCC |
1584 | c->cnr.stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
1585 | c->pre_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE; | |
1586 | c->pre_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE; | |
d9b6f08a MCC |
1587 | c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
1588 | c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE; | |
09b6d21e MCC |
1589 | c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE; |
1590 | c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE; | |
1591 | } | |
b9ede79a MCC |
1592 | } |
1593 | ||
15b1c5a0 | 1594 | static int mb86a20s_get_stats(struct dvb_frontend *fe, int status_nr) |
149d518a MCC |
1595 | { |
1596 | struct mb86a20s_state *state = fe->demodulator_priv; | |
1597 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
1598 | int rc = 0, i; | |
1599 | u32 bit_error = 0, bit_count = 0; | |
1600 | u32 t_pre_bit_error = 0, t_pre_bit_count = 0; | |
d9b6f08a | 1601 | u32 t_post_bit_error = 0, t_post_bit_count = 0; |
593ae89a MCC |
1602 | u32 block_error = 0, block_count = 0; |
1603 | u32 t_block_error = 0, t_block_count = 0; | |
d9b6f08a MCC |
1604 | int active_layers = 0, pre_ber_layers = 0, post_ber_layers = 0; |
1605 | int per_layers = 0; | |
149d518a | 1606 | |
25188bd0 MCC |
1607 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
1608 | ||
1609 | mb86a20s_get_main_CNR(fe); | |
1610 | ||
149d518a | 1611 | /* Get per-layer stats */ |
593ae89a | 1612 | mb86a20s_get_blk_error_layer_CNR(fe); |
25188bd0 | 1613 | |
15b1c5a0 MCC |
1614 | /* |
1615 | * At state 7, only CNR is available | |
1616 | * For BER measures, state=9 is required | |
1617 | * FIXME: we may get MER measures with state=8 | |
1618 | */ | |
1619 | if (status_nr < 9) | |
1620 | return 0; | |
1621 | ||
4f62a20d | 1622 | for (i = 0; i < NUM_LAYERS; i++) { |
149d518a MCC |
1623 | if (c->isdbt_layer_enabled & (1 << i)) { |
1624 | /* Layer is active and has rc segments */ | |
1625 | active_layers++; | |
1626 | ||
149d518a | 1627 | /* Handle BER before vterbi */ |
ad0abbf1 MCC |
1628 | rc = mb86a20s_get_pre_ber(fe, i, |
1629 | &bit_error, &bit_count); | |
149d518a MCC |
1630 | if (rc >= 0) { |
1631 | c->pre_bit_error.stat[1 + i].scale = FE_SCALE_COUNTER; | |
1632 | c->pre_bit_error.stat[1 + i].uvalue += bit_error; | |
1633 | c->pre_bit_count.stat[1 + i].scale = FE_SCALE_COUNTER; | |
1634 | c->pre_bit_count.stat[1 + i].uvalue += bit_count; | |
1635 | } else if (rc != -EBUSY) { | |
1636 | /* | |
1637 | * If an I/O error happened, | |
1638 | * measures are now unavailable | |
1639 | */ | |
1640 | c->pre_bit_error.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1641 | c->pre_bit_count.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1642 | dev_err(&state->i2c->dev, | |
1643 | "%s: Can't get BER for layer %c (error %d).\n", | |
1644 | __func__, 'A' + i, rc); | |
1645 | } | |
149d518a | 1646 | if (c->block_error.stat[1 + i].scale != FE_SCALE_NOT_AVAILABLE) |
d9b6f08a MCC |
1647 | pre_ber_layers++; |
1648 | ||
1649 | /* Handle BER post vterbi */ | |
1650 | rc = mb86a20s_get_post_ber(fe, i, | |
1651 | &bit_error, &bit_count); | |
1652 | if (rc >= 0) { | |
1653 | c->post_bit_error.stat[1 + i].scale = FE_SCALE_COUNTER; | |
1654 | c->post_bit_error.stat[1 + i].uvalue += bit_error; | |
1655 | c->post_bit_count.stat[1 + i].scale = FE_SCALE_COUNTER; | |
1656 | c->post_bit_count.stat[1 + i].uvalue += bit_count; | |
1657 | } else if (rc != -EBUSY) { | |
1658 | /* | |
1659 | * If an I/O error happened, | |
1660 | * measures are now unavailable | |
1661 | */ | |
1662 | c->post_bit_error.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1663 | c->post_bit_count.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1664 | dev_err(&state->i2c->dev, | |
1665 | "%s: Can't get BER for layer %c (error %d).\n", | |
1666 | __func__, 'A' + i, rc); | |
1667 | } | |
d9b6f08a MCC |
1668 | if (c->block_error.stat[1 + i].scale != FE_SCALE_NOT_AVAILABLE) |
1669 | post_ber_layers++; | |
149d518a | 1670 | |
593ae89a MCC |
1671 | /* Handle Block errors for PER/UCB reports */ |
1672 | rc = mb86a20s_get_blk_error(fe, i, | |
1673 | &block_error, | |
1674 | &block_count); | |
1675 | if (rc >= 0) { | |
1676 | c->block_error.stat[1 + i].scale = FE_SCALE_COUNTER; | |
1677 | c->block_error.stat[1 + i].uvalue += block_error; | |
1678 | c->block_count.stat[1 + i].scale = FE_SCALE_COUNTER; | |
1679 | c->block_count.stat[1 + i].uvalue += block_count; | |
1680 | } else if (rc != -EBUSY) { | |
1681 | /* | |
1682 | * If an I/O error happened, | |
1683 | * measures are now unavailable | |
1684 | */ | |
1685 | c->block_error.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1686 | c->block_count.stat[1 + i].scale = FE_SCALE_NOT_AVAILABLE; | |
1687 | dev_err(&state->i2c->dev, | |
1688 | "%s: Can't get PER for layer %c (error %d).\n", | |
1689 | __func__, 'A' + i, rc); | |
1690 | ||
1691 | } | |
593ae89a MCC |
1692 | if (c->block_error.stat[1 + i].scale != FE_SCALE_NOT_AVAILABLE) |
1693 | per_layers++; | |
1694 | ||
d9b6f08a | 1695 | /* Update total preBER */ |
149d518a MCC |
1696 | t_pre_bit_error += c->pre_bit_error.stat[1 + i].uvalue; |
1697 | t_pre_bit_count += c->pre_bit_count.stat[1 + i].uvalue; | |
593ae89a | 1698 | |
d9b6f08a MCC |
1699 | /* Update total postBER */ |
1700 | t_post_bit_error += c->post_bit_error.stat[1 + i].uvalue; | |
1701 | t_post_bit_count += c->post_bit_count.stat[1 + i].uvalue; | |
1702 | ||
593ae89a MCC |
1703 | /* Update total PER */ |
1704 | t_block_error += c->block_error.stat[1 + i].uvalue; | |
1705 | t_block_count += c->block_count.stat[1 + i].uvalue; | |
149d518a MCC |
1706 | } |
1707 | } | |
1708 | ||
1709 | /* | |
1710 | * Start showing global count if at least one error count is | |
1711 | * available. | |
1712 | */ | |
d9b6f08a | 1713 | if (pre_ber_layers) { |
149d518a MCC |
1714 | /* |
1715 | * At least one per-layer BER measure was read. We can now | |
1716 | * calculate the total BER | |
1717 | * | |
1718 | * Total Bit Error/Count is calculated as the sum of the | |
1719 | * bit errors on all active layers. | |
1720 | */ | |
1721 | c->pre_bit_error.stat[0].scale = FE_SCALE_COUNTER; | |
1722 | c->pre_bit_error.stat[0].uvalue = t_pre_bit_error; | |
1723 | c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER; | |
1724 | c->pre_bit_count.stat[0].uvalue = t_pre_bit_count; | |
f67102c4 MCC |
1725 | } else { |
1726 | c->pre_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
1727 | c->pre_bit_count.stat[0].scale = FE_SCALE_COUNTER; | |
149d518a MCC |
1728 | } |
1729 | ||
d9b6f08a MCC |
1730 | /* |
1731 | * Start showing global count if at least one error count is | |
1732 | * available. | |
1733 | */ | |
1734 | if (post_ber_layers) { | |
1735 | /* | |
1736 | * At least one per-layer BER measure was read. We can now | |
1737 | * calculate the total BER | |
1738 | * | |
1739 | * Total Bit Error/Count is calculated as the sum of the | |
1740 | * bit errors on all active layers. | |
1741 | */ | |
1742 | c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; | |
1743 | c->post_bit_error.stat[0].uvalue = t_post_bit_error; | |
1744 | c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; | |
1745 | c->post_bit_count.stat[0].uvalue = t_post_bit_count; | |
f67102c4 MCC |
1746 | } else { |
1747 | c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
1748 | c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; | |
d9b6f08a MCC |
1749 | } |
1750 | ||
593ae89a MCC |
1751 | if (per_layers) { |
1752 | /* | |
1753 | * At least one per-layer UCB measure was read. We can now | |
1754 | * calculate the total UCB | |
1755 | * | |
1756 | * Total block Error/Count is calculated as the sum of the | |
1757 | * block errors on all active layers. | |
1758 | */ | |
1759 | c->block_error.stat[0].scale = FE_SCALE_COUNTER; | |
1760 | c->block_error.stat[0].uvalue = t_block_error; | |
1761 | c->block_count.stat[0].scale = FE_SCALE_COUNTER; | |
1762 | c->block_count.stat[0].uvalue = t_block_count; | |
f67102c4 MCC |
1763 | } else { |
1764 | c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; | |
1765 | c->block_count.stat[0].scale = FE_SCALE_COUNTER; | |
593ae89a MCC |
1766 | } |
1767 | ||
149d518a MCC |
1768 | return rc; |
1769 | } | |
09b6d21e MCC |
1770 | |
1771 | /* | |
1772 | * The functions below are called via DVB callbacks, so they need to | |
1773 | * properly use the I2C gate control | |
1774 | */ | |
1775 | ||
dd4493ef MCC |
1776 | static int mb86a20s_initfe(struct dvb_frontend *fe) |
1777 | { | |
1778 | struct mb86a20s_state *state = fe->demodulator_priv; | |
768e6dad | 1779 | u64 pll; |
0e4bbedd | 1780 | u32 fclk; |
dd4493ef | 1781 | int rc; |
04fa725e | 1782 | u8 regD5 = 1, reg71, reg09 = 0x3a; |
dd4493ef | 1783 | |
f66d81b5 | 1784 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
dd4493ef MCC |
1785 | |
1786 | if (fe->ops.i2c_gate_ctrl) | |
1787 | fe->ops.i2c_gate_ctrl(fe, 0); | |
1788 | ||
1789 | /* Initialize the frontend */ | |
768e6dad | 1790 | rc = mb86a20s_writeregdata(state, mb86a20s_init1); |
dd4493ef MCC |
1791 | if (rc < 0) |
1792 | goto err; | |
1793 | ||
04fa725e MCC |
1794 | if (!state->inversion) |
1795 | reg09 |= 0x04; | |
1796 | rc = mb86a20s_writereg(state, 0x09, reg09); | |
1797 | if (rc < 0) | |
1798 | goto err; | |
1799 | if (!state->bw) | |
1800 | reg71 = 1; | |
1801 | else | |
1802 | reg71 = 0; | |
1803 | rc = mb86a20s_writereg(state, 0x39, reg71); | |
1804 | if (rc < 0) | |
1805 | goto err; | |
1806 | rc = mb86a20s_writereg(state, 0x71, state->bw); | |
1807 | if (rc < 0) | |
1808 | goto err; | |
1809 | if (state->subchannel) { | |
1810 | rc = mb86a20s_writereg(state, 0x44, state->subchannel); | |
1811 | if (rc < 0) | |
1812 | goto err; | |
1813 | } | |
1814 | ||
0e4bbedd MCC |
1815 | fclk = state->config->fclk; |
1816 | if (!fclk) | |
1817 | fclk = 32571428; | |
1818 | ||
768e6dad MCC |
1819 | /* Adjust IF frequency to match tuner */ |
1820 | if (fe->ops.tuner_ops.get_if_frequency) | |
1821 | fe->ops.tuner_ops.get_if_frequency(fe, &state->if_freq); | |
1822 | ||
1823 | if (!state->if_freq) | |
1824 | state->if_freq = 3300000; | |
1825 | ||
0e4bbedd MCC |
1826 | pll = (((u64)1) << 34) * state->if_freq; |
1827 | do_div(pll, 63 * fclk); | |
1828 | pll = (1 << 25) - pll; | |
1829 | rc = mb86a20s_writereg(state, 0x28, 0x2a); | |
1830 | if (rc < 0) | |
1831 | goto err; | |
1832 | rc = mb86a20s_writereg(state, 0x29, (pll >> 16) & 0xff); | |
1833 | if (rc < 0) | |
1834 | goto err; | |
1835 | rc = mb86a20s_writereg(state, 0x2a, (pll >> 8) & 0xff); | |
1836 | if (rc < 0) | |
1837 | goto err; | |
1838 | rc = mb86a20s_writereg(state, 0x2b, pll & 0xff); | |
1839 | if (rc < 0) | |
1840 | goto err; | |
1841 | dev_dbg(&state->i2c->dev, "%s: fclk=%d, IF=%d, clock reg=0x%06llx\n", | |
1842 | __func__, fclk, state->if_freq, (long long)pll); | |
1843 | ||
768e6dad MCC |
1844 | /* pll = freq[Hz] * 2^24/10^6 / 16.285714286 */ |
1845 | pll = state->if_freq * 1677721600L; | |
1846 | do_div(pll, 1628571429L); | |
1847 | rc = mb86a20s_writereg(state, 0x28, 0x20); | |
1848 | if (rc < 0) | |
1849 | goto err; | |
1850 | rc = mb86a20s_writereg(state, 0x29, (pll >> 16) & 0xff); | |
1851 | if (rc < 0) | |
1852 | goto err; | |
1853 | rc = mb86a20s_writereg(state, 0x2a, (pll >> 8) & 0xff); | |
1854 | if (rc < 0) | |
1855 | goto err; | |
1856 | rc = mb86a20s_writereg(state, 0x2b, pll & 0xff); | |
1857 | if (rc < 0) | |
1858 | goto err; | |
0e4bbedd | 1859 | dev_dbg(&state->i2c->dev, "%s: IF=%d, IF reg=0x%06llx\n", |
768e6dad MCC |
1860 | __func__, state->if_freq, (long long)pll); |
1861 | ||
dd4493ef MCC |
1862 | if (!state->config->is_serial) { |
1863 | regD5 &= ~1; | |
1864 | ||
1865 | rc = mb86a20s_writereg(state, 0x50, 0xd5); | |
1866 | if (rc < 0) | |
1867 | goto err; | |
1868 | rc = mb86a20s_writereg(state, 0x51, regD5); | |
1869 | if (rc < 0) | |
1870 | goto err; | |
1871 | } | |
1872 | ||
768e6dad MCC |
1873 | rc = mb86a20s_writeregdata(state, mb86a20s_init2); |
1874 | if (rc < 0) | |
1875 | goto err; | |
1876 | ||
1877 | ||
dd4493ef MCC |
1878 | err: |
1879 | if (fe->ops.i2c_gate_ctrl) | |
1880 | fe->ops.i2c_gate_ctrl(fe, 1); | |
1881 | ||
1882 | if (rc < 0) { | |
1883 | state->need_init = true; | |
f66d81b5 MCC |
1884 | dev_info(&state->i2c->dev, |
1885 | "mb86a20s: Init failed. Will try again later\n"); | |
dd4493ef MCC |
1886 | } else { |
1887 | state->need_init = false; | |
f66d81b5 | 1888 | dev_dbg(&state->i2c->dev, "Initialization succeeded.\n"); |
dd4493ef MCC |
1889 | } |
1890 | return rc; | |
1891 | } | |
1892 | ||
1893 | static int mb86a20s_set_frontend(struct dvb_frontend *fe) | |
1894 | { | |
1895 | struct mb86a20s_state *state = fe->demodulator_priv; | |
dd4493ef | 1896 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
04fa725e | 1897 | int rc, if_freq; |
f66d81b5 | 1898 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
dd4493ef | 1899 | |
04fa725e MCC |
1900 | if (!c->isdbt_layer_enabled) |
1901 | c->isdbt_layer_enabled = 7; | |
1902 | ||
1903 | if (c->isdbt_layer_enabled == 1) | |
1904 | state->bw = MB86A20S_1SEG; | |
1905 | else if (c->isdbt_partial_reception) | |
1906 | state->bw = MB86A20S_13SEG_PARTIAL; | |
1907 | else | |
1908 | state->bw = MB86A20S_13SEG; | |
1909 | ||
1910 | if (c->inversion == INVERSION_ON) | |
1911 | state->inversion = true; | |
1912 | else | |
1913 | state->inversion = false; | |
1914 | ||
1915 | if (!c->isdbt_sb_mode) { | |
1916 | state->subchannel = 0; | |
1917 | } else { | |
1918 | if (c->isdbt_sb_subchannel > ARRAY_SIZE(mb86a20s_subchannel)) | |
1919 | c->isdbt_sb_subchannel = 0; | |
1920 | ||
1921 | state->subchannel = mb86a20s_subchannel[c->isdbt_sb_subchannel]; | |
1922 | } | |
1923 | ||
dd4493ef MCC |
1924 | /* |
1925 | * Gate should already be opened, but it doesn't hurt to | |
1926 | * double-check | |
1927 | */ | |
1928 | if (fe->ops.i2c_gate_ctrl) | |
1929 | fe->ops.i2c_gate_ctrl(fe, 1); | |
dd4493ef MCC |
1930 | fe->ops.tuner_ops.set_params(fe); |
1931 | ||
a78b41d5 | 1932 | if (fe->ops.tuner_ops.get_if_frequency) |
768e6dad MCC |
1933 | fe->ops.tuner_ops.get_if_frequency(fe, &if_freq); |
1934 | ||
dd4493ef MCC |
1935 | /* |
1936 | * Make it more reliable: if, for some reason, the initial | |
1937 | * device initialization doesn't happen, initialize it when | |
1938 | * a SBTVD parameters are adjusted. | |
1939 | * | |
1940 | * Unfortunately, due to a hard to track bug at tda829x/tda18271, | |
1941 | * the agc callback logic is not called during DVB attach time, | |
1942 | * causing mb86a20s to not be initialized with Kworld SBTVD. | |
1943 | * So, this hack is needed, in order to make Kworld SBTVD to work. | |
768e6dad MCC |
1944 | * |
1945 | * It is also needed to change the IF after the initial init. | |
a78b41d5 MCC |
1946 | * |
1947 | * HACK: Always init the frontend when set_frontend is called: | |
1948 | * it was noticed that, on some devices, it fails to lock on a | |
1949 | * different channel. So, it is better to reset everything, even | |
1950 | * wasting some time, than to loose channel lock. | |
dd4493ef | 1951 | */ |
a78b41d5 | 1952 | mb86a20s_initfe(fe); |
dd4493ef MCC |
1953 | |
1954 | if (fe->ops.i2c_gate_ctrl) | |
1955 | fe->ops.i2c_gate_ctrl(fe, 0); | |
d01a8ee3 | 1956 | |
dd4493ef | 1957 | rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception); |
09b6d21e | 1958 | mb86a20s_reset_counters(fe); |
3a2e4751 | 1959 | mb86a20s_stats_not_ready(fe); |
d01a8ee3 | 1960 | |
dd4493ef MCC |
1961 | if (fe->ops.i2c_gate_ctrl) |
1962 | fe->ops.i2c_gate_ctrl(fe, 1); | |
1963 | ||
1964 | return rc; | |
1965 | } | |
1966 | ||
09b6d21e MCC |
1967 | static int mb86a20s_read_status_and_stats(struct dvb_frontend *fe, |
1968 | fe_status_t *status) | |
d36e418a | 1969 | { |
09b6d21e | 1970 | struct mb86a20s_state *state = fe->demodulator_priv; |
15b1c5a0 | 1971 | int rc, status_nr; |
d36e418a | 1972 | |
09b6d21e | 1973 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
d36e418a MCC |
1974 | |
1975 | if (fe->ops.i2c_gate_ctrl) | |
1976 | fe->ops.i2c_gate_ctrl(fe, 0); | |
1977 | ||
09b6d21e | 1978 | /* Get lock */ |
15b1c5a0 MCC |
1979 | status_nr = mb86a20s_read_status(fe, status); |
1980 | if (status_nr < 7) { | |
09b6d21e MCC |
1981 | mb86a20s_stats_not_ready(fe); |
1982 | mb86a20s_reset_frontend_cache(fe); | |
1983 | } | |
15b1c5a0 | 1984 | if (status_nr < 0) { |
149d518a MCC |
1985 | dev_err(&state->i2c->dev, |
1986 | "%s: Can't read frontend lock status\n", __func__); | |
09b6d21e | 1987 | goto error; |
149d518a | 1988 | } |
09b6d21e MCC |
1989 | |
1990 | /* Get signal strength */ | |
1991 | rc = mb86a20s_read_signal_strength(fe); | |
1992 | if (rc < 0) { | |
149d518a MCC |
1993 | dev_err(&state->i2c->dev, |
1994 | "%s: Can't reset VBER registers.\n", __func__); | |
09b6d21e MCC |
1995 | mb86a20s_stats_not_ready(fe); |
1996 | mb86a20s_reset_frontend_cache(fe); | |
149d518a MCC |
1997 | |
1998 | rc = 0; /* Status is OK */ | |
09b6d21e MCC |
1999 | goto error; |
2000 | } | |
09b6d21e | 2001 | |
15b1c5a0 | 2002 | if (status_nr >= 7) { |
09b6d21e MCC |
2003 | /* Get TMCC info*/ |
2004 | rc = mb86a20s_get_frontend(fe); | |
149d518a MCC |
2005 | if (rc < 0) { |
2006 | dev_err(&state->i2c->dev, | |
2007 | "%s: Can't get FE TMCC data.\n", __func__); | |
2008 | rc = 0; /* Status is OK */ | |
2009 | goto error; | |
2010 | } | |
2011 | ||
2012 | /* Get statistics */ | |
15b1c5a0 | 2013 | rc = mb86a20s_get_stats(fe, status_nr); |
149d518a MCC |
2014 | if (rc < 0 && rc != -EBUSY) { |
2015 | dev_err(&state->i2c->dev, | |
2016 | "%s: Can't get FE statistics.\n", __func__); | |
2017 | rc = 0; | |
09b6d21e | 2018 | goto error; |
149d518a MCC |
2019 | } |
2020 | rc = 0; /* Don't return EBUSY to userspace */ | |
09b6d21e | 2021 | } |
149d518a | 2022 | goto ok; |
09b6d21e | 2023 | |
149d518a | 2024 | error: |
09b6d21e | 2025 | mb86a20s_stats_not_ready(fe); |
d36e418a | 2026 | |
149d518a | 2027 | ok: |
d36e418a MCC |
2028 | if (fe->ops.i2c_gate_ctrl) |
2029 | fe->ops.i2c_gate_ctrl(fe, 1); | |
149d518a | 2030 | |
09b6d21e MCC |
2031 | return rc; |
2032 | } | |
2033 | ||
2034 | static int mb86a20s_read_signal_strength_from_cache(struct dvb_frontend *fe, | |
2035 | u16 *strength) | |
2036 | { | |
2037 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
2038 | ||
2039 | ||
2040 | *strength = c->strength.stat[0].uvalue; | |
d36e418a | 2041 | |
09b6d21e | 2042 | return 0; |
d36e418a MCC |
2043 | } |
2044 | ||
09b6d21e MCC |
2045 | static int mb86a20s_get_frontend_dummy(struct dvb_frontend *fe) |
2046 | { | |
2047 | /* | |
2048 | * get_frontend is now handled together with other stats | |
2049 | * retrival, when read_status() is called, as some statistics | |
2050 | * will depend on the layers detection. | |
2051 | */ | |
2052 | return 0; | |
2053 | }; | |
2054 | ||
b9ede79a | 2055 | static int mb86a20s_tune(struct dvb_frontend *fe, |
7e072221 | 2056 | bool re_tune, |
b9ede79a MCC |
2057 | unsigned int mode_flags, |
2058 | unsigned int *delay, | |
2059 | fe_status_t *status) | |
2060 | { | |
f66d81b5 | 2061 | struct mb86a20s_state *state = fe->demodulator_priv; |
b9ede79a MCC |
2062 | int rc = 0; |
2063 | ||
f66d81b5 | 2064 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
b9ede79a | 2065 | |
7e072221 | 2066 | if (re_tune) |
2d76e22b | 2067 | rc = mb86a20s_set_frontend(fe); |
b9ede79a MCC |
2068 | |
2069 | if (!(mode_flags & FE_TUNE_MODE_ONESHOT)) | |
09b6d21e | 2070 | mb86a20s_read_status_and_stats(fe, status); |
b9ede79a MCC |
2071 | |
2072 | return rc; | |
2073 | } | |
2074 | ||
2075 | static void mb86a20s_release(struct dvb_frontend *fe) | |
2076 | { | |
2077 | struct mb86a20s_state *state = fe->demodulator_priv; | |
2078 | ||
f66d81b5 | 2079 | dev_dbg(&state->i2c->dev, "%s called.\n", __func__); |
b9ede79a MCC |
2080 | |
2081 | kfree(state); | |
2082 | } | |
2083 | ||
2084 | static struct dvb_frontend_ops mb86a20s_ops; | |
2085 | ||
2086 | struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config, | |
2087 | struct i2c_adapter *i2c) | |
2088 | { | |
f66d81b5 | 2089 | struct mb86a20s_state *state; |
b9ede79a MCC |
2090 | u8 rev; |
2091 | ||
f167e302 MCC |
2092 | dev_dbg(&i2c->dev, "%s called.\n", __func__); |
2093 | ||
b9ede79a | 2094 | /* allocate memory for the internal state */ |
f66d81b5 | 2095 | state = kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL); |
b9ede79a | 2096 | if (state == NULL) { |
f167e302 | 2097 | dev_err(&i2c->dev, |
f66d81b5 | 2098 | "%s: unable to allocate memory for state\n", __func__); |
b9ede79a MCC |
2099 | goto error; |
2100 | } | |
2101 | ||
2102 | /* setup the state */ | |
2103 | state->config = config; | |
2104 | state->i2c = i2c; | |
2105 | ||
2106 | /* create dvb_frontend */ | |
2107 | memcpy(&state->frontend.ops, &mb86a20s_ops, | |
2108 | sizeof(struct dvb_frontend_ops)); | |
2109 | state->frontend.demodulator_priv = state; | |
2110 | ||
2111 | /* Check if it is a mb86a20s frontend */ | |
2112 | rev = mb86a20s_readreg(state, 0); | |
2113 | ||
2114 | if (rev == 0x13) { | |
f167e302 | 2115 | dev_info(&i2c->dev, |
f66d81b5 | 2116 | "Detected a Fujitsu mb86a20s frontend\n"); |
b9ede79a | 2117 | } else { |
f167e302 | 2118 | dev_dbg(&i2c->dev, |
f66d81b5 | 2119 | "Frontend revision %d is unknown - aborting.\n", |
b9ede79a MCC |
2120 | rev); |
2121 | goto error; | |
2122 | } | |
2123 | ||
2124 | return &state->frontend; | |
2125 | ||
2126 | error: | |
2127 | kfree(state); | |
2128 | return NULL; | |
2129 | } | |
2130 | EXPORT_SYMBOL(mb86a20s_attach); | |
2131 | ||
2132 | static struct dvb_frontend_ops mb86a20s_ops = { | |
2d76e22b | 2133 | .delsys = { SYS_ISDBT }, |
b9ede79a MCC |
2134 | /* Use dib8000 values per default */ |
2135 | .info = { | |
2136 | .name = "Fujitsu mb86A20s", | |
04fa725e | 2137 | .caps = FE_CAN_RECOVER | |
b9ede79a MCC |
2138 | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
2139 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | | |
2140 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | | |
2141 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO | | |
2142 | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO, | |
2143 | /* Actually, those values depend on the used tuner */ | |
2144 | .frequency_min = 45000000, | |
2145 | .frequency_max = 864000000, | |
2146 | .frequency_stepsize = 62500, | |
2147 | }, | |
2148 | ||
2149 | .release = mb86a20s_release, | |
2150 | ||
2151 | .init = mb86a20s_initfe, | |
2d76e22b | 2152 | .set_frontend = mb86a20s_set_frontend, |
09b6d21e MCC |
2153 | .get_frontend = mb86a20s_get_frontend_dummy, |
2154 | .read_status = mb86a20s_read_status_and_stats, | |
2155 | .read_signal_strength = mb86a20s_read_signal_strength_from_cache, | |
b9ede79a MCC |
2156 | .tune = mb86a20s_tune, |
2157 | }; | |
2158 | ||
2159 | MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware"); | |
2160 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); | |
2161 | MODULE_LICENSE("GPL"); |