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a80abc58 MCC |
1 | /* |
2 | * Rafael Micro R820T driver | |
3 | * | |
4 | * Copyright (C) 2013 Mauro Carvalho Chehab <mchehab@redhat.com> | |
5 | * | |
6 | * This driver was written from scratch, based on an existing driver | |
7 | * that it is part of rtl-sdr git tree, released under GPLv2: | |
8 | * https://groups.google.com/forum/#!topic/ultra-cheap-sdr/Y3rBEOFtHug | |
9 | * https://github.com/n1gp/gr-baz | |
10 | * | |
11 | * From what I understood from the threads, the original driver was converted | |
12 | * to userspace from a Realtek tree. I couldn't find the original tree. | |
13 | * However, the original driver look awkward on my eyes. So, I decided to | |
14 | * write a new version from it from the scratch, while trying to reproduce | |
15 | * everything found there. | |
16 | * | |
17 | * TODO: | |
18 | * After locking, the original driver seems to have some routines to | |
19 | * improve reception. This was not implemented here yet. | |
20 | * | |
21 | * RF Gain set/get is not implemented. | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or modify | |
24 | * it under the terms of the GNU General Public License as published by | |
25 | * the Free Software Foundation; either version 2 of the License, or | |
26 | * (at your option) any later version. | |
27 | * | |
28 | * This program is distributed in the hope that it will be useful, | |
29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
31 | * GNU General Public License for more details. | |
32 | * | |
33 | */ | |
34 | ||
35 | #include <linux/videodev2.h> | |
36 | #include <linux/mutex.h> | |
37 | #include <linux/slab.h> | |
103fe2fb | 38 | #include <linux/bitrev.h> |
a80abc58 | 39 | #include <asm/div64.h> |
103fe2fb MCC |
40 | |
41 | #include "tuner-i2c.h" | |
a80abc58 MCC |
42 | #include "r820t.h" |
43 | ||
44 | /* | |
45 | * FIXME: I think that there are only 32 registers, but better safe than | |
46 | * sorry. After finishing the driver, we may review it. | |
47 | */ | |
48 | #define REG_SHADOW_START 5 | |
49 | #define NUM_REGS 27 | |
25cf4d46 MCC |
50 | #define NUM_IMR 5 |
51 | #define IMR_TRIAL 9 | |
a80abc58 MCC |
52 | |
53 | #define VER_NUM 49 | |
54 | ||
55 | static int debug; | |
56 | module_param(debug, int, 0644); | |
57 | MODULE_PARM_DESC(debug, "enable verbose debug messages"); | |
58 | ||
52775fd5 MCC |
59 | static int no_imr_cal; |
60 | module_param(no_imr_cal, int, 0444); | |
61 | MODULE_PARM_DESC(no_imr_cal, "Disable IMR calibration at module init"); | |
62 | ||
63 | ||
a80abc58 MCC |
64 | /* |
65 | * enums and structures | |
66 | */ | |
67 | ||
68 | enum xtal_cap_value { | |
69 | XTAL_LOW_CAP_30P = 0, | |
70 | XTAL_LOW_CAP_20P, | |
71 | XTAL_LOW_CAP_10P, | |
72 | XTAL_LOW_CAP_0P, | |
73 | XTAL_HIGH_CAP_0P | |
74 | }; | |
75 | ||
25cf4d46 MCC |
76 | struct r820t_sect_type { |
77 | u8 phase_y; | |
78 | u8 gain_x; | |
79 | u16 value; | |
80 | }; | |
81 | ||
a80abc58 MCC |
82 | struct r820t_priv { |
83 | struct list_head hybrid_tuner_instance_list; | |
84 | const struct r820t_config *cfg; | |
85 | struct tuner_i2c_props i2c_props; | |
86 | struct mutex lock; | |
87 | ||
88 | u8 regs[NUM_REGS]; | |
89 | u8 buf[NUM_REGS + 1]; | |
90 | enum xtal_cap_value xtal_cap_sel; | |
91 | u16 pll; /* kHz */ | |
92 | u32 int_freq; | |
93 | u8 fil_cal_code; | |
94 | bool imr_done; | |
52775fd5 MCC |
95 | bool has_lock; |
96 | bool init_done; | |
25cf4d46 MCC |
97 | struct r820t_sect_type imr_data[NUM_IMR]; |
98 | ||
a80abc58 MCC |
99 | /* Store current mode */ |
100 | u32 delsys; | |
101 | enum v4l2_tuner_type type; | |
102 | v4l2_std_id std; | |
103 | u32 bw; /* in MHz */ | |
a80abc58 MCC |
104 | }; |
105 | ||
106 | struct r820t_freq_range { | |
107 | u32 freq; | |
108 | u8 open_d; | |
109 | u8 rf_mux_ploy; | |
110 | u8 tf_c; | |
111 | u8 xtal_cap20p; | |
112 | u8 xtal_cap10p; | |
113 | u8 xtal_cap0p; | |
114 | u8 imr_mem; /* Not used, currently */ | |
115 | }; | |
116 | ||
117 | #define VCO_POWER_REF 0x02 | |
84ddc33c | 118 | #define DIP_FREQ 32000000 |
a80abc58 MCC |
119 | |
120 | /* | |
121 | * Static constants | |
122 | */ | |
123 | ||
124 | static LIST_HEAD(hybrid_tuner_instance_list); | |
125 | static DEFINE_MUTEX(r820t_list_mutex); | |
126 | ||
127 | /* Those initial values start from REG_SHADOW_START */ | |
128 | static const u8 r820t_init_array[NUM_REGS] = { | |
129 | 0x83, 0x32, 0x75, /* 05 to 07 */ | |
130 | 0xc0, 0x40, 0xd6, 0x6c, /* 08 to 0b */ | |
131 | 0xf5, 0x63, 0x75, 0x68, /* 0c to 0f */ | |
132 | 0x6c, 0x83, 0x80, 0x00, /* 10 to 13 */ | |
133 | 0x0f, 0x00, 0xc0, 0x30, /* 14 to 17 */ | |
134 | 0x48, 0xcc, 0x60, 0x00, /* 18 to 1b */ | |
135 | 0x54, 0xae, 0x4a, 0xc0 /* 1c to 1f */ | |
136 | }; | |
137 | ||
138 | /* Tuner frequency ranges */ | |
139 | static const struct r820t_freq_range freq_ranges[] = { | |
140 | { | |
141 | .freq = 0, | |
142 | .open_d = 0x08, /* low */ | |
143 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
144 | .tf_c = 0xdf, /* R27[7:0] band2,band0 */ | |
145 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
146 | .xtal_cap10p = 0x01, | |
147 | .xtal_cap0p = 0x00, | |
148 | .imr_mem = 0, | |
149 | }, { | |
150 | .freq = 50, /* Start freq, in MHz */ | |
151 | .open_d = 0x08, /* low */ | |
152 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
153 | .tf_c = 0xbe, /* R27[7:0] band4,band1 */ | |
154 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
155 | .xtal_cap10p = 0x01, | |
156 | .xtal_cap0p = 0x00, | |
157 | .imr_mem = 0, | |
158 | }, { | |
159 | .freq = 55, /* Start freq, in MHz */ | |
160 | .open_d = 0x08, /* low */ | |
161 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
162 | .tf_c = 0x8b, /* R27[7:0] band7,band4 */ | |
163 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
164 | .xtal_cap10p = 0x01, | |
165 | .xtal_cap0p = 0x00, | |
166 | .imr_mem = 0, | |
167 | }, { | |
168 | .freq = 60, /* Start freq, in MHz */ | |
169 | .open_d = 0x08, /* low */ | |
170 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
171 | .tf_c = 0x7b, /* R27[7:0] band8,band4 */ | |
172 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
173 | .xtal_cap10p = 0x01, | |
174 | .xtal_cap0p = 0x00, | |
175 | .imr_mem = 0, | |
176 | }, { | |
177 | .freq = 65, /* Start freq, in MHz */ | |
178 | .open_d = 0x08, /* low */ | |
179 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
180 | .tf_c = 0x69, /* R27[7:0] band9,band6 */ | |
181 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
182 | .xtal_cap10p = 0x01, | |
183 | .xtal_cap0p = 0x00, | |
184 | .imr_mem = 0, | |
185 | }, { | |
186 | .freq = 70, /* Start freq, in MHz */ | |
187 | .open_d = 0x08, /* low */ | |
188 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
189 | .tf_c = 0x58, /* R27[7:0] band10,band7 */ | |
190 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
191 | .xtal_cap10p = 0x01, | |
192 | .xtal_cap0p = 0x00, | |
193 | .imr_mem = 0, | |
194 | }, { | |
195 | .freq = 75, /* Start freq, in MHz */ | |
196 | .open_d = 0x00, /* high */ | |
197 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
198 | .tf_c = 0x44, /* R27[7:0] band11,band11 */ | |
199 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
200 | .xtal_cap10p = 0x01, | |
201 | .xtal_cap0p = 0x00, | |
202 | .imr_mem = 0, | |
203 | }, { | |
204 | .freq = 80, /* Start freq, in MHz */ | |
205 | .open_d = 0x00, /* high */ | |
206 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
207 | .tf_c = 0x44, /* R27[7:0] band11,band11 */ | |
208 | .xtal_cap20p = 0x02, /* R16[1:0] 20pF (10) */ | |
209 | .xtal_cap10p = 0x01, | |
210 | .xtal_cap0p = 0x00, | |
211 | .imr_mem = 0, | |
212 | }, { | |
213 | .freq = 90, /* Start freq, in MHz */ | |
214 | .open_d = 0x00, /* high */ | |
215 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
216 | .tf_c = 0x34, /* R27[7:0] band12,band11 */ | |
217 | .xtal_cap20p = 0x01, /* R16[1:0] 10pF (01) */ | |
218 | .xtal_cap10p = 0x01, | |
219 | .xtal_cap0p = 0x00, | |
220 | .imr_mem = 0, | |
221 | }, { | |
222 | .freq = 100, /* Start freq, in MHz */ | |
223 | .open_d = 0x00, /* high */ | |
224 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
225 | .tf_c = 0x34, /* R27[7:0] band12,band11 */ | |
226 | .xtal_cap20p = 0x01, /* R16[1:0] 10pF (01) */ | |
227 | .xtal_cap10p = 0x01, | |
228 | .xtal_cap0p = 0x00, | |
229 | .imr_mem = 0, | |
230 | }, { | |
231 | .freq = 110, /* Start freq, in MHz */ | |
232 | .open_d = 0x00, /* high */ | |
233 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
234 | .tf_c = 0x24, /* R27[7:0] band13,band11 */ | |
235 | .xtal_cap20p = 0x01, /* R16[1:0] 10pF (01) */ | |
236 | .xtal_cap10p = 0x01, | |
237 | .xtal_cap0p = 0x00, | |
238 | .imr_mem = 1, | |
239 | }, { | |
240 | .freq = 120, /* Start freq, in MHz */ | |
241 | .open_d = 0x00, /* high */ | |
242 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
243 | .tf_c = 0x24, /* R27[7:0] band13,band11 */ | |
244 | .xtal_cap20p = 0x01, /* R16[1:0] 10pF (01) */ | |
245 | .xtal_cap10p = 0x01, | |
246 | .xtal_cap0p = 0x00, | |
247 | .imr_mem = 1, | |
248 | }, { | |
249 | .freq = 140, /* Start freq, in MHz */ | |
250 | .open_d = 0x00, /* high */ | |
251 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
252 | .tf_c = 0x14, /* R27[7:0] band14,band11 */ | |
253 | .xtal_cap20p = 0x01, /* R16[1:0] 10pF (01) */ | |
254 | .xtal_cap10p = 0x01, | |
255 | .xtal_cap0p = 0x00, | |
256 | .imr_mem = 1, | |
257 | }, { | |
258 | .freq = 180, /* Start freq, in MHz */ | |
259 | .open_d = 0x00, /* high */ | |
260 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
261 | .tf_c = 0x13, /* R27[7:0] band14,band12 */ | |
262 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
263 | .xtal_cap10p = 0x00, | |
264 | .xtal_cap0p = 0x00, | |
265 | .imr_mem = 1, | |
266 | }, { | |
267 | .freq = 220, /* Start freq, in MHz */ | |
268 | .open_d = 0x00, /* high */ | |
269 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
270 | .tf_c = 0x13, /* R27[7:0] band14,band12 */ | |
271 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
272 | .xtal_cap10p = 0x00, | |
273 | .xtal_cap0p = 0x00, | |
274 | .imr_mem = 2, | |
275 | }, { | |
276 | .freq = 250, /* Start freq, in MHz */ | |
277 | .open_d = 0x00, /* high */ | |
278 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
279 | .tf_c = 0x11, /* R27[7:0] highest,highest */ | |
280 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
281 | .xtal_cap10p = 0x00, | |
282 | .xtal_cap0p = 0x00, | |
283 | .imr_mem = 2, | |
284 | }, { | |
285 | .freq = 280, /* Start freq, in MHz */ | |
286 | .open_d = 0x00, /* high */ | |
287 | .rf_mux_ploy = 0x02, /* R26[7:6]=0 (LPF) R26[1:0]=2 (low) */ | |
288 | .tf_c = 0x00, /* R27[7:0] highest,highest */ | |
289 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
290 | .xtal_cap10p = 0x00, | |
291 | .xtal_cap0p = 0x00, | |
292 | .imr_mem = 2, | |
293 | }, { | |
294 | .freq = 310, /* Start freq, in MHz */ | |
295 | .open_d = 0x00, /* high */ | |
296 | .rf_mux_ploy = 0x41, /* R26[7:6]=1 (bypass) R26[1:0]=1 (middle) */ | |
297 | .tf_c = 0x00, /* R27[7:0] highest,highest */ | |
298 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
299 | .xtal_cap10p = 0x00, | |
300 | .xtal_cap0p = 0x00, | |
301 | .imr_mem = 2, | |
302 | }, { | |
303 | .freq = 450, /* Start freq, in MHz */ | |
304 | .open_d = 0x00, /* high */ | |
305 | .rf_mux_ploy = 0x41, /* R26[7:6]=1 (bypass) R26[1:0]=1 (middle) */ | |
306 | .tf_c = 0x00, /* R27[7:0] highest,highest */ | |
307 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
308 | .xtal_cap10p = 0x00, | |
309 | .xtal_cap0p = 0x00, | |
310 | .imr_mem = 3, | |
311 | }, { | |
312 | .freq = 588, /* Start freq, in MHz */ | |
313 | .open_d = 0x00, /* high */ | |
314 | .rf_mux_ploy = 0x40, /* R26[7:6]=1 (bypass) R26[1:0]=0 (highest) */ | |
315 | .tf_c = 0x00, /* R27[7:0] highest,highest */ | |
316 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
317 | .xtal_cap10p = 0x00, | |
318 | .xtal_cap0p = 0x00, | |
319 | .imr_mem = 3, | |
320 | }, { | |
321 | .freq = 650, /* Start freq, in MHz */ | |
322 | .open_d = 0x00, /* high */ | |
323 | .rf_mux_ploy = 0x40, /* R26[7:6]=1 (bypass) R26[1:0]=0 (highest) */ | |
324 | .tf_c = 0x00, /* R27[7:0] highest,highest */ | |
325 | .xtal_cap20p = 0x00, /* R16[1:0] 0pF (00) */ | |
326 | .xtal_cap10p = 0x00, | |
327 | .xtal_cap0p = 0x00, | |
328 | .imr_mem = 4, | |
329 | } | |
330 | }; | |
331 | ||
332 | static int r820t_xtal_capacitor[][2] = { | |
333 | { 0x0b, XTAL_LOW_CAP_30P }, | |
334 | { 0x02, XTAL_LOW_CAP_20P }, | |
335 | { 0x01, XTAL_LOW_CAP_10P }, | |
336 | { 0x00, XTAL_LOW_CAP_0P }, | |
337 | { 0x10, XTAL_HIGH_CAP_0P }, | |
338 | }; | |
339 | ||
50786ddf MCC |
340 | /* |
341 | * measured with a Racal 6103E GSM test set at 928 MHz with -60 dBm | |
342 | * input power, for raw results see: | |
343 | * http://steve-m.de/projects/rtl-sdr/gain_measurement/r820t/ | |
344 | */ | |
345 | ||
346 | static const int r820t_lna_gain_steps[] = { | |
347 | 0, 9, 13, 40, 38, 13, 31, 22, 26, 31, 26, 14, 19, 5, 35, 13 | |
348 | }; | |
349 | ||
350 | static const int r820t_mixer_gain_steps[] = { | |
351 | 0, 5, 10, 10, 19, 9, 10, 25, 17, 10, 8, 16, 13, 6, 3, -8 | |
352 | }; | |
353 | ||
a80abc58 MCC |
354 | /* |
355 | * I2C read/write code and shadow registers logic | |
356 | */ | |
357 | static void shadow_store(struct r820t_priv *priv, u8 reg, const u8 *val, | |
358 | int len) | |
359 | { | |
360 | int r = reg - REG_SHADOW_START; | |
361 | ||
362 | if (r < 0) { | |
363 | len += r; | |
364 | r = 0; | |
365 | } | |
366 | if (len <= 0) | |
367 | return; | |
368 | if (len > NUM_REGS) | |
369 | len = NUM_REGS; | |
370 | ||
371 | tuner_dbg("%s: prev reg=%02x len=%d: %*ph\n", | |
372 | __func__, r + REG_SHADOW_START, len, len, val); | |
373 | ||
374 | memcpy(&priv->regs[r], val, len); | |
375 | } | |
376 | ||
377 | static int r820t_write(struct r820t_priv *priv, u8 reg, const u8 *val, | |
378 | int len) | |
379 | { | |
380 | int rc, size, pos = 0; | |
381 | ||
382 | /* Store the shadow registers */ | |
383 | shadow_store(priv, reg, val, len); | |
384 | ||
385 | do { | |
386 | if (len > priv->cfg->max_i2c_msg_len - 1) | |
387 | size = priv->cfg->max_i2c_msg_len - 1; | |
388 | else | |
389 | size = len; | |
390 | ||
391 | /* Fill I2C buffer */ | |
392 | priv->buf[0] = reg; | |
393 | memcpy(&priv->buf[1], &val[pos], size); | |
394 | ||
395 | rc = tuner_i2c_xfer_send(&priv->i2c_props, priv->buf, size + 1); | |
396 | if (rc != size + 1) { | |
397 | tuner_info("%s: i2c wr failed=%d reg=%02x len=%d: %*ph\n", | |
398 | __func__, rc, reg, size, size, &priv->buf[1]); | |
399 | if (rc < 0) | |
400 | return rc; | |
401 | return -EREMOTEIO; | |
402 | } | |
403 | tuner_dbg("%s: i2c wr reg=%02x len=%d: %*ph\n", | |
404 | __func__, reg, size, size, &priv->buf[1]); | |
405 | ||
406 | reg += size; | |
407 | len -= size; | |
408 | pos += size; | |
409 | } while (len > 0); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | static int r820t_write_reg(struct r820t_priv *priv, u8 reg, u8 val) | |
415 | { | |
416 | return r820t_write(priv, reg, &val, 1); | |
417 | } | |
418 | ||
8678b034 | 419 | static int r820t_read_cache_reg(struct r820t_priv *priv, int reg) |
a80abc58 | 420 | { |
8678b034 | 421 | reg -= REG_SHADOW_START; |
a80abc58 | 422 | |
8678b034 MCC |
423 | if (reg >= 0 && reg < NUM_REGS) |
424 | return priv->regs[reg]; | |
a80abc58 MCC |
425 | else |
426 | return -EINVAL; | |
8678b034 MCC |
427 | } |
428 | ||
429 | static int r820t_write_reg_mask(struct r820t_priv *priv, u8 reg, u8 val, | |
430 | u8 bit_mask) | |
431 | { | |
432 | int rc = r820t_read_cache_reg(priv, reg); | |
433 | ||
434 | if (rc < 0) | |
435 | return rc; | |
436 | ||
437 | val = (rc & ~bit_mask) | (val & bit_mask); | |
a80abc58 MCC |
438 | |
439 | return r820t_write(priv, reg, &val, 1); | |
440 | } | |
441 | ||
226471a1 | 442 | static int r820t_read(struct r820t_priv *priv, u8 reg, u8 *val, int len) |
a80abc58 | 443 | { |
103fe2fb | 444 | int rc, i; |
a80abc58 MCC |
445 | u8 *p = &priv->buf[1]; |
446 | ||
447 | priv->buf[0] = reg; | |
448 | ||
449 | rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, priv->buf, 1, p, len); | |
450 | if (rc != len) { | |
451 | tuner_info("%s: i2c rd failed=%d reg=%02x len=%d: %*ph\n", | |
452 | __func__, rc, reg, len, len, p); | |
453 | if (rc < 0) | |
454 | return rc; | |
455 | return -EREMOTEIO; | |
456 | } | |
a80abc58 MCC |
457 | |
458 | /* Copy data to the output buffer */ | |
103fe2fb MCC |
459 | for (i = 0; i < len; i++) |
460 | val[i] = bitrev8(p[i]); | |
a80abc58 | 461 | |
6b8c2308 MCC |
462 | tuner_dbg("%s: i2c rd reg=%02x len=%d: %*ph\n", |
463 | __func__, reg, len, len, val); | |
464 | ||
a80abc58 MCC |
465 | return 0; |
466 | } | |
467 | ||
468 | /* | |
469 | * r820t tuning logic | |
470 | */ | |
471 | ||
472 | static int r820t_set_mux(struct r820t_priv *priv, u32 freq) | |
473 | { | |
474 | const struct r820t_freq_range *range; | |
475 | int i, rc; | |
25cf4d46 | 476 | u8 val, reg08, reg09; |
a80abc58 MCC |
477 | |
478 | /* Get the proper frequency range */ | |
479 | freq = freq / 1000000; | |
480 | for (i = 0; i < ARRAY_SIZE(freq_ranges) - 1; i++) { | |
481 | if (freq < freq_ranges[i + 1].freq) | |
482 | break; | |
483 | } | |
484 | range = &freq_ranges[i]; | |
485 | ||
486 | tuner_dbg("set r820t range#%d for frequency %d MHz\n", i, freq); | |
487 | ||
488 | /* Open Drain */ | |
489 | rc = r820t_write_reg_mask(priv, 0x17, range->open_d, 0x08); | |
490 | if (rc < 0) | |
491 | return rc; | |
492 | ||
493 | /* RF_MUX,Polymux */ | |
494 | rc = r820t_write_reg_mask(priv, 0x1a, range->rf_mux_ploy, 0xc3); | |
495 | if (rc < 0) | |
496 | return rc; | |
497 | ||
498 | /* TF BAND */ | |
499 | rc = r820t_write_reg(priv, 0x1b, range->tf_c); | |
500 | if (rc < 0) | |
501 | return rc; | |
502 | ||
503 | /* XTAL CAP & Drive */ | |
504 | switch (priv->xtal_cap_sel) { | |
505 | case XTAL_LOW_CAP_30P: | |
506 | case XTAL_LOW_CAP_20P: | |
507 | val = range->xtal_cap20p | 0x08; | |
508 | break; | |
509 | case XTAL_LOW_CAP_10P: | |
510 | val = range->xtal_cap10p | 0x08; | |
511 | break; | |
512 | case XTAL_HIGH_CAP_0P: | |
513 | val = range->xtal_cap0p | 0x00; | |
514 | break; | |
515 | default: | |
516 | case XTAL_LOW_CAP_0P: | |
517 | val = range->xtal_cap0p | 0x08; | |
518 | break; | |
519 | } | |
520 | rc = r820t_write_reg_mask(priv, 0x10, val, 0x0b); | |
521 | if (rc < 0) | |
522 | return rc; | |
523 | ||
25cf4d46 MCC |
524 | if (priv->imr_done) { |
525 | reg08 = priv->imr_data[range->imr_mem].gain_x; | |
526 | reg09 = priv->imr_data[range->imr_mem].phase_y; | |
527 | } else { | |
528 | reg08 = 0; | |
529 | reg09 = 0; | |
530 | } | |
531 | rc = r820t_write_reg_mask(priv, 0x08, reg08, 0x3f); | |
a80abc58 MCC |
532 | if (rc < 0) |
533 | return rc; | |
534 | ||
25cf4d46 | 535 | rc = r820t_write_reg_mask(priv, 0x09, reg09, 0x3f); |
a80abc58 MCC |
536 | |
537 | return rc; | |
538 | } | |
539 | ||
d75d5388 MCC |
540 | static int r820t_set_pll(struct r820t_priv *priv, enum v4l2_tuner_type type, |
541 | u32 freq) | |
a80abc58 MCC |
542 | { |
543 | u64 tmp64, vco_freq; | |
544 | int rc, i; | |
d75d5388 | 545 | unsigned sleep_time = 10000; |
a80abc58 MCC |
546 | u32 vco_fra; /* VCO contribution by SDM (kHz) */ |
547 | u32 vco_min = 1770000; | |
548 | u32 vco_max = vco_min * 2; | |
549 | u32 pll_ref; | |
550 | u16 n_sdm = 2; | |
551 | u16 sdm = 0; | |
552 | u8 mix_div = 2; | |
553 | u8 div_buf = 0; | |
554 | u8 div_num = 0; | |
d75d5388 | 555 | u8 refdiv2 = 0; |
a80abc58 MCC |
556 | u8 ni, si, nint, vco_fine_tune, val; |
557 | u8 data[5]; | |
558 | ||
d75d5388 MCC |
559 | /* Frequency in kHz */ |
560 | freq = freq / 1000; | |
a80abc58 MCC |
561 | pll_ref = priv->cfg->xtal / 1000; |
562 | ||
d75d5388 MCC |
563 | if ((priv->cfg->rafael_chip == CHIP_R620D) || |
564 | (priv->cfg->rafael_chip == CHIP_R828D) || | |
565 | (priv->cfg->rafael_chip == CHIP_R828)) { | |
566 | /* ref set refdiv2, reffreq = Xtal/2 on ATV application */ | |
567 | if (type != V4L2_TUNER_DIGITAL_TV) { | |
568 | pll_ref /= 2; | |
569 | refdiv2 = 0x10; | |
570 | sleep_time = 20000; | |
571 | } | |
572 | } else { | |
573 | if (priv->cfg->xtal > 24000000) { | |
574 | pll_ref /= 2; | |
575 | refdiv2 = 0x10; | |
576 | } | |
577 | } | |
a80abc58 | 578 | |
d75d5388 MCC |
579 | tuner_dbg("set r820t pll for frequency %d kHz = %d%s\n", |
580 | freq, pll_ref, refdiv2 ? " / 2" : ""); | |
581 | ||
582 | rc = r820t_write_reg_mask(priv, 0x10, refdiv2, 0x10); | |
a80abc58 MCC |
583 | if (rc < 0) |
584 | return rc; | |
585 | ||
586 | /* set pll autotune = 128kHz */ | |
587 | rc = r820t_write_reg_mask(priv, 0x1a, 0x00, 0x0c); | |
588 | if (rc < 0) | |
589 | return rc; | |
590 | ||
591 | /* set VCO current = 100 */ | |
592 | rc = r820t_write_reg_mask(priv, 0x12, 0x80, 0xe0); | |
593 | if (rc < 0) | |
594 | return rc; | |
595 | ||
596 | /* Calculate divider */ | |
597 | while (mix_div <= 64) { | |
598 | if (((freq * mix_div) >= vco_min) && | |
599 | ((freq * mix_div) < vco_max)) { | |
600 | div_buf = mix_div; | |
601 | while (div_buf > 2) { | |
602 | div_buf = div_buf >> 1; | |
603 | div_num++; | |
604 | } | |
605 | break; | |
606 | } | |
607 | mix_div = mix_div << 1; | |
608 | } | |
609 | ||
226471a1 | 610 | rc = r820t_read(priv, 0x00, data, sizeof(data)); |
a80abc58 MCC |
611 | if (rc < 0) |
612 | return rc; | |
613 | ||
614 | vco_fine_tune = (data[4] & 0x30) >> 4; | |
615 | ||
616 | if (vco_fine_tune > VCO_POWER_REF) | |
617 | div_num = div_num - 1; | |
618 | else if (vco_fine_tune < VCO_POWER_REF) | |
619 | div_num = div_num + 1; | |
620 | ||
621 | rc = r820t_write_reg_mask(priv, 0x10, div_num << 5, 0xe0); | |
622 | if (rc < 0) | |
623 | return rc; | |
624 | ||
625 | vco_freq = (u64)(freq * (u64)mix_div); | |
626 | ||
627 | tmp64 = vco_freq; | |
628 | do_div(tmp64, 2 * pll_ref); | |
629 | nint = (u8)tmp64; | |
630 | ||
631 | tmp64 = vco_freq - ((u64)2) * pll_ref * nint; | |
632 | do_div(tmp64, 1000); | |
633 | vco_fra = (u16)(tmp64); | |
634 | ||
a80abc58 MCC |
635 | /* boundary spur prevention */ |
636 | if (vco_fra < pll_ref / 64) { | |
637 | vco_fra = 0; | |
638 | } else if (vco_fra > pll_ref * 127 / 64) { | |
639 | vco_fra = 0; | |
640 | nint++; | |
641 | } else if ((vco_fra > pll_ref * 127 / 128) && (vco_fra < pll_ref)) { | |
642 | vco_fra = pll_ref * 127 / 128; | |
643 | } else if ((vco_fra > pll_ref) && (vco_fra < pll_ref * 129 / 128)) { | |
644 | vco_fra = pll_ref * 129 / 128; | |
645 | } | |
646 | ||
647 | if (nint > 63) { | |
648 | tuner_info("No valid PLL values for %u kHz!\n", freq); | |
649 | return -EINVAL; | |
650 | } | |
651 | ||
652 | ni = (nint - 13) / 4; | |
653 | si = nint - 4 * ni - 13; | |
654 | ||
655 | rc = r820t_write_reg(priv, 0x14, ni + (si << 6)); | |
656 | if (rc < 0) | |
657 | return rc; | |
658 | ||
659 | /* pw_sdm */ | |
660 | if (!vco_fra) | |
661 | val = 0x08; | |
662 | else | |
663 | val = 0x00; | |
664 | ||
665 | rc = r820t_write_reg_mask(priv, 0x12, val, 0x08); | |
666 | if (rc < 0) | |
667 | return rc; | |
668 | ||
669 | /* sdm calculator */ | |
670 | while (vco_fra > 1) { | |
671 | if (vco_fra > (2 * pll_ref / n_sdm)) { | |
672 | sdm = sdm + 32768 / (n_sdm / 2); | |
673 | vco_fra = vco_fra - 2 * pll_ref / n_sdm; | |
674 | if (n_sdm >= 0x8000) | |
675 | break; | |
676 | } | |
677 | n_sdm = n_sdm << 1; | |
678 | } | |
679 | ||
680 | rc = r820t_write_reg_mask(priv, 0x16, sdm >> 8, 0x08); | |
681 | if (rc < 0) | |
682 | return rc; | |
683 | rc = r820t_write_reg_mask(priv, 0x15, sdm & 0xff, 0x08); | |
684 | if (rc < 0) | |
685 | return rc; | |
686 | ||
687 | for (i = 0; i < 2; i++) { | |
d75d5388 | 688 | usleep_range(sleep_time, sleep_time + 1000); |
a80abc58 MCC |
689 | |
690 | /* Check if PLL has locked */ | |
226471a1 | 691 | rc = r820t_read(priv, 0x00, data, 3); |
a80abc58 MCC |
692 | if (rc < 0) |
693 | return rc; | |
694 | if (data[2] & 0x40) | |
695 | break; | |
696 | ||
697 | if (!i) { | |
698 | /* Didn't lock. Increase VCO current */ | |
699 | rc = r820t_write_reg_mask(priv, 0x12, 0x60, 0xe0); | |
700 | if (rc < 0) | |
701 | return rc; | |
702 | } | |
703 | } | |
704 | ||
705 | if (!(data[2] & 0x40)) { | |
706 | priv->has_lock = false; | |
707 | return 0; | |
708 | } | |
709 | ||
710 | priv->has_lock = true; | |
711 | tuner_dbg("tuner has lock at frequency %d kHz\n", freq); | |
712 | ||
713 | /* set pll autotune = 8kHz */ | |
714 | rc = r820t_write_reg_mask(priv, 0x1a, 0x08, 0x08); | |
715 | ||
716 | return rc; | |
717 | } | |
718 | ||
719 | static int r820t_sysfreq_sel(struct r820t_priv *priv, u32 freq, | |
720 | enum v4l2_tuner_type type, | |
721 | v4l2_std_id std, | |
722 | u32 delsys) | |
723 | { | |
724 | int rc; | |
725 | u8 mixer_top, lna_top, cp_cur, div_buf_cur, lna_vth_l, mixer_vth_l; | |
726 | u8 air_cable1_in, cable2_in, pre_dect, lna_discharge, filter_cur; | |
727 | ||
728 | tuner_dbg("adjusting tuner parameters for the standard\n"); | |
729 | ||
730 | switch (delsys) { | |
731 | case SYS_DVBT: | |
732 | if ((freq == 506000000) || (freq == 666000000) || | |
733 | (freq == 818000000)) { | |
734 | mixer_top = 0x14; /* mixer top:14 , top-1, low-discharge */ | |
735 | lna_top = 0xe5; /* detect bw 3, lna top:4, predet top:2 */ | |
736 | cp_cur = 0x28; /* 101, 0.2 */ | |
737 | div_buf_cur = 0x20; /* 10, 200u */ | |
738 | } else { | |
739 | mixer_top = 0x24; /* mixer top:13 , top-1, low-discharge */ | |
740 | lna_top = 0xe5; /* detect bw 3, lna top:4, predet top:2 */ | |
741 | cp_cur = 0x38; /* 111, auto */ | |
742 | div_buf_cur = 0x30; /* 11, 150u */ | |
743 | } | |
744 | lna_vth_l = 0x53; /* lna vth 0.84 , vtl 0.64 */ | |
745 | mixer_vth_l = 0x75; /* mixer vth 1.04, vtl 0.84 */ | |
746 | air_cable1_in = 0x00; | |
747 | cable2_in = 0x00; | |
748 | pre_dect = 0x40; | |
749 | lna_discharge = 14; | |
750 | filter_cur = 0x40; /* 10, low */ | |
751 | break; | |
752 | case SYS_DVBT2: | |
753 | mixer_top = 0x24; /* mixer top:13 , top-1, low-discharge */ | |
754 | lna_top = 0xe5; /* detect bw 3, lna top:4, predet top:2 */ | |
755 | lna_vth_l = 0x53; /* lna vth 0.84 , vtl 0.64 */ | |
756 | mixer_vth_l = 0x75; /* mixer vth 1.04, vtl 0.84 */ | |
757 | air_cable1_in = 0x00; | |
758 | cable2_in = 0x00; | |
759 | pre_dect = 0x40; | |
760 | lna_discharge = 14; | |
761 | cp_cur = 0x38; /* 111, auto */ | |
762 | div_buf_cur = 0x30; /* 11, 150u */ | |
763 | filter_cur = 0x40; /* 10, low */ | |
764 | break; | |
765 | case SYS_ISDBT: | |
766 | mixer_top = 0x24; /* mixer top:13 , top-1, low-discharge */ | |
767 | lna_top = 0xe5; /* detect bw 3, lna top:4, predet top:2 */ | |
768 | lna_vth_l = 0x75; /* lna vth 1.04 , vtl 0.84 */ | |
769 | mixer_vth_l = 0x75; /* mixer vth 1.04, vtl 0.84 */ | |
770 | air_cable1_in = 0x00; | |
771 | cable2_in = 0x00; | |
772 | pre_dect = 0x40; | |
773 | lna_discharge = 14; | |
774 | cp_cur = 0x38; /* 111, auto */ | |
775 | div_buf_cur = 0x30; /* 11, 150u */ | |
776 | filter_cur = 0x40; /* 10, low */ | |
777 | break; | |
778 | default: /* DVB-T 8M */ | |
779 | mixer_top = 0x24; /* mixer top:13 , top-1, low-discharge */ | |
780 | lna_top = 0xe5; /* detect bw 3, lna top:4, predet top:2 */ | |
781 | lna_vth_l = 0x53; /* lna vth 0.84 , vtl 0.64 */ | |
782 | mixer_vth_l = 0x75; /* mixer vth 1.04, vtl 0.84 */ | |
783 | air_cable1_in = 0x00; | |
784 | cable2_in = 0x00; | |
785 | pre_dect = 0x40; | |
786 | lna_discharge = 14; | |
787 | cp_cur = 0x38; /* 111, auto */ | |
788 | div_buf_cur = 0x30; /* 11, 150u */ | |
789 | filter_cur = 0x40; /* 10, low */ | |
790 | break; | |
791 | } | |
792 | ||
84ddc33c MCC |
793 | if (priv->cfg->use_diplexer && |
794 | ((priv->cfg->rafael_chip == CHIP_R820T) || | |
795 | (priv->cfg->rafael_chip == CHIP_R828S) || | |
796 | (priv->cfg->rafael_chip == CHIP_R820C))) { | |
797 | if (freq > DIP_FREQ) | |
798 | air_cable1_in = 0x00; | |
799 | else | |
800 | air_cable1_in = 0x60; | |
801 | cable2_in = 0x00; | |
802 | } | |
803 | ||
a80abc58 MCC |
804 | rc = r820t_write_reg_mask(priv, 0x1d, lna_top, 0xc7); |
805 | if (rc < 0) | |
806 | return rc; | |
807 | rc = r820t_write_reg_mask(priv, 0x1c, mixer_top, 0xf8); | |
808 | if (rc < 0) | |
809 | return rc; | |
810 | rc = r820t_write_reg(priv, 0x0d, lna_vth_l); | |
811 | if (rc < 0) | |
812 | return rc; | |
813 | rc = r820t_write_reg(priv, 0x0e, mixer_vth_l); | |
814 | if (rc < 0) | |
815 | return rc; | |
816 | ||
817 | /* Air-IN only for Astrometa */ | |
818 | rc = r820t_write_reg_mask(priv, 0x05, air_cable1_in, 0x60); | |
819 | if (rc < 0) | |
820 | return rc; | |
821 | rc = r820t_write_reg_mask(priv, 0x06, cable2_in, 0x08); | |
822 | if (rc < 0) | |
823 | return rc; | |
824 | ||
825 | rc = r820t_write_reg_mask(priv, 0x11, cp_cur, 0x38); | |
826 | if (rc < 0) | |
827 | return rc; | |
828 | rc = r820t_write_reg_mask(priv, 0x17, div_buf_cur, 0x30); | |
829 | if (rc < 0) | |
830 | return rc; | |
831 | rc = r820t_write_reg_mask(priv, 0x0a, filter_cur, 0x60); | |
832 | if (rc < 0) | |
833 | return rc; | |
834 | /* | |
835 | * Original driver initializes regs 0x05 and 0x06 with the | |
836 | * same value again on this point. Probably, it is just an | |
837 | * error there | |
838 | */ | |
839 | ||
840 | /* | |
841 | * Set LNA | |
842 | */ | |
843 | ||
844 | tuner_dbg("adjusting LNA parameters\n"); | |
845 | if (type != V4L2_TUNER_ANALOG_TV) { | |
846 | /* LNA TOP: lowest */ | |
847 | rc = r820t_write_reg_mask(priv, 0x1d, 0, 0x38); | |
848 | if (rc < 0) | |
849 | return rc; | |
850 | ||
851 | /* 0: normal mode */ | |
852 | rc = r820t_write_reg_mask(priv, 0x1c, 0, 0x04); | |
853 | if (rc < 0) | |
854 | return rc; | |
855 | ||
856 | /* 0: PRE_DECT off */ | |
857 | rc = r820t_write_reg_mask(priv, 0x06, 0, 0x40); | |
858 | if (rc < 0) | |
859 | return rc; | |
860 | ||
861 | /* agc clk 250hz */ | |
862 | rc = r820t_write_reg_mask(priv, 0x1a, 0x30, 0x30); | |
863 | if (rc < 0) | |
864 | return rc; | |
865 | ||
866 | msleep(250); | |
867 | ||
868 | /* write LNA TOP = 3 */ | |
869 | rc = r820t_write_reg_mask(priv, 0x1d, 0x18, 0x38); | |
870 | if (rc < 0) | |
871 | return rc; | |
872 | ||
873 | /* | |
874 | * write discharge mode | |
875 | * FIXME: IMHO, the mask here is wrong, but it matches | |
876 | * what's there at the original driver | |
877 | */ | |
878 | rc = r820t_write_reg_mask(priv, 0x1c, mixer_top, 0x04); | |
879 | if (rc < 0) | |
880 | return rc; | |
881 | ||
882 | /* LNA discharge current */ | |
883 | rc = r820t_write_reg_mask(priv, 0x1e, lna_discharge, 0x1f); | |
884 | if (rc < 0) | |
885 | return rc; | |
886 | ||
887 | /* agc clk 60hz */ | |
888 | rc = r820t_write_reg_mask(priv, 0x1a, 0x20, 0x30); | |
889 | if (rc < 0) | |
890 | return rc; | |
891 | } else { | |
892 | /* PRE_DECT off */ | |
893 | rc = r820t_write_reg_mask(priv, 0x06, 0, 0x40); | |
894 | if (rc < 0) | |
895 | return rc; | |
896 | ||
897 | /* write LNA TOP */ | |
898 | rc = r820t_write_reg_mask(priv, 0x1d, lna_top, 0x38); | |
899 | if (rc < 0) | |
900 | return rc; | |
901 | ||
902 | /* | |
903 | * write discharge mode | |
904 | * FIXME: IMHO, the mask here is wrong, but it matches | |
905 | * what's there at the original driver | |
906 | */ | |
907 | rc = r820t_write_reg_mask(priv, 0x1c, mixer_top, 0x04); | |
908 | if (rc < 0) | |
909 | return rc; | |
910 | ||
911 | /* LNA discharge current */ | |
912 | rc = r820t_write_reg_mask(priv, 0x1e, lna_discharge, 0x1f); | |
913 | if (rc < 0) | |
914 | return rc; | |
915 | ||
916 | /* agc clk 1Khz, external det1 cap 1u */ | |
917 | rc = r820t_write_reg_mask(priv, 0x1a, 0x00, 0x30); | |
918 | if (rc < 0) | |
919 | return rc; | |
920 | ||
921 | rc = r820t_write_reg_mask(priv, 0x10, 0x00, 0x04); | |
922 | if (rc < 0) | |
923 | return rc; | |
924 | } | |
925 | return 0; | |
926 | } | |
927 | ||
928 | static int r820t_set_tv_standard(struct r820t_priv *priv, | |
929 | unsigned bw, | |
930 | enum v4l2_tuner_type type, | |
931 | v4l2_std_id std, u32 delsys) | |
932 | ||
933 | { | |
934 | int rc, i; | |
935 | u32 if_khz, filt_cal_lo; | |
936 | u8 data[5], val; | |
937 | u8 filt_gain, img_r, filt_q, hp_cor, ext_enable, loop_through; | |
938 | u8 lt_att, flt_ext_widest, polyfil_cur; | |
939 | bool need_calibration; | |
940 | ||
941 | tuner_dbg("selecting the delivery system\n"); | |
942 | ||
943 | if (delsys == SYS_ISDBT) { | |
944 | if_khz = 4063; | |
945 | filt_cal_lo = 59000; | |
946 | filt_gain = 0x10; /* +3db, 6mhz on */ | |
947 | img_r = 0x00; /* image negative */ | |
948 | filt_q = 0x10; /* r10[4]:low q(1'b1) */ | |
949 | hp_cor = 0x6a; /* 1.7m disable, +2cap, 1.25mhz */ | |
950 | ext_enable = 0x40; /* r30[6], ext enable; r30[5]:0 ext at lna max */ | |
951 | loop_through = 0x00; /* r5[7], lt on */ | |
952 | lt_att = 0x00; /* r31[7], lt att enable */ | |
953 | flt_ext_widest = 0x00; /* r15[7]: flt_ext_wide off */ | |
954 | polyfil_cur = 0x60; /* r25[6:5]:min */ | |
955 | } else { | |
956 | if (bw <= 6) { | |
957 | if_khz = 3570; | |
958 | filt_cal_lo = 56000; /* 52000->56000 */ | |
959 | filt_gain = 0x10; /* +3db, 6mhz on */ | |
960 | img_r = 0x00; /* image negative */ | |
961 | filt_q = 0x10; /* r10[4]:low q(1'b1) */ | |
962 | hp_cor = 0x6b; /* 1.7m disable, +2cap, 1.0mhz */ | |
963 | ext_enable = 0x60; /* r30[6]=1 ext enable; r30[5]:1 ext at lna max-1 */ | |
964 | loop_through = 0x00; /* r5[7], lt on */ | |
965 | lt_att = 0x00; /* r31[7], lt att enable */ | |
966 | flt_ext_widest = 0x00; /* r15[7]: flt_ext_wide off */ | |
967 | polyfil_cur = 0x60; /* r25[6:5]:min */ | |
968 | } else if (bw == 7) { | |
6189f80d MCC |
969 | #if 0 |
970 | /* | |
971 | * There are two 7 MHz tables defined on the original | |
972 | * driver, but just the second one seems to be visible | |
973 | * by rtl2832. Keep this one here commented, as it | |
974 | * might be needed in the future | |
975 | */ | |
976 | ||
a80abc58 MCC |
977 | if_khz = 4070; |
978 | filt_cal_lo = 60000; | |
979 | filt_gain = 0x10; /* +3db, 6mhz on */ | |
980 | img_r = 0x00; /* image negative */ | |
981 | filt_q = 0x10; /* r10[4]:low q(1'b1) */ | |
982 | hp_cor = 0x2b; /* 1.7m disable, +1cap, 1.0mhz */ | |
983 | ext_enable = 0x60; /* r30[6]=1 ext enable; r30[5]:1 ext at lna max-1 */ | |
984 | loop_through = 0x00; /* r5[7], lt on */ | |
985 | lt_att = 0x00; /* r31[7], lt att enable */ | |
986 | flt_ext_widest = 0x00; /* r15[7]: flt_ext_wide off */ | |
987 | polyfil_cur = 0x60; /* r25[6:5]:min */ | |
6189f80d MCC |
988 | #endif |
989 | /* 7 MHz, second table */ | |
a80abc58 MCC |
990 | if_khz = 4570; |
991 | filt_cal_lo = 63000; | |
992 | filt_gain = 0x10; /* +3db, 6mhz on */ | |
993 | img_r = 0x00; /* image negative */ | |
994 | filt_q = 0x10; /* r10[4]:low q(1'b1) */ | |
995 | hp_cor = 0x2a; /* 1.7m disable, +1cap, 1.25mhz */ | |
996 | ext_enable = 0x60; /* r30[6]=1 ext enable; r30[5]:1 ext at lna max-1 */ | |
997 | loop_through = 0x00; /* r5[7], lt on */ | |
998 | lt_att = 0x00; /* r31[7], lt att enable */ | |
999 | flt_ext_widest = 0x00; /* r15[7]: flt_ext_wide off */ | |
1000 | polyfil_cur = 0x60; /* r25[6:5]:min */ | |
a80abc58 MCC |
1001 | } else { |
1002 | if_khz = 4570; | |
1003 | filt_cal_lo = 68500; | |
1004 | filt_gain = 0x10; /* +3db, 6mhz on */ | |
1005 | img_r = 0x00; /* image negative */ | |
1006 | filt_q = 0x10; /* r10[4]:low q(1'b1) */ | |
1007 | hp_cor = 0x0b; /* 1.7m disable, +0cap, 1.0mhz */ | |
1008 | ext_enable = 0x60; /* r30[6]=1 ext enable; r30[5]:1 ext at lna max-1 */ | |
1009 | loop_through = 0x00; /* r5[7], lt on */ | |
1010 | lt_att = 0x00; /* r31[7], lt att enable */ | |
1011 | flt_ext_widest = 0x00; /* r15[7]: flt_ext_wide off */ | |
1012 | polyfil_cur = 0x60; /* r25[6:5]:min */ | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | /* Initialize the shadow registers */ | |
1017 | memcpy(priv->regs, r820t_init_array, sizeof(r820t_init_array)); | |
1018 | ||
1019 | /* Init Flag & Xtal_check Result */ | |
1020 | if (priv->imr_done) | |
1021 | val = 1 | priv->xtal_cap_sel << 1; | |
1022 | else | |
1023 | val = 0; | |
1024 | rc = r820t_write_reg_mask(priv, 0x0c, val, 0x0f); | |
1025 | if (rc < 0) | |
1026 | return rc; | |
1027 | ||
1028 | /* version */ | |
1029 | rc = r820t_write_reg_mask(priv, 0x13, VER_NUM, 0x3f); | |
1030 | if (rc < 0) | |
1031 | return rc; | |
1032 | ||
1033 | /* for LT Gain test */ | |
1034 | if (type != V4L2_TUNER_ANALOG_TV) { | |
1035 | rc = r820t_write_reg_mask(priv, 0x1d, 0x00, 0x38); | |
1036 | if (rc < 0) | |
1037 | return rc; | |
9cc2570a | 1038 | usleep_range(1000, 2000); |
a80abc58 | 1039 | } |
f60f5bcb | 1040 | priv->int_freq = if_khz * 1000; |
a80abc58 MCC |
1041 | |
1042 | /* Check if standard changed. If so, filter calibration is needed */ | |
1043 | if (type != priv->type) | |
1044 | need_calibration = true; | |
1045 | else if ((type == V4L2_TUNER_ANALOG_TV) && (std != priv->std)) | |
1046 | need_calibration = true; | |
1047 | else if ((type == V4L2_TUNER_DIGITAL_TV) && | |
1048 | ((delsys != priv->delsys) || bw != priv->bw)) | |
1049 | need_calibration = true; | |
1050 | else | |
1051 | need_calibration = false; | |
1052 | ||
1053 | if (need_calibration) { | |
1054 | tuner_dbg("calibrating the tuner\n"); | |
1055 | for (i = 0; i < 2; i++) { | |
1056 | /* Set filt_cap */ | |
1057 | rc = r820t_write_reg_mask(priv, 0x0b, hp_cor, 0x60); | |
1058 | if (rc < 0) | |
1059 | return rc; | |
1060 | ||
1061 | /* set cali clk =on */ | |
1062 | rc = r820t_write_reg_mask(priv, 0x0f, 0x04, 0x04); | |
1063 | if (rc < 0) | |
1064 | return rc; | |
1065 | ||
1066 | /* X'tal cap 0pF for PLL */ | |
1067 | rc = r820t_write_reg_mask(priv, 0x10, 0x00, 0x03); | |
1068 | if (rc < 0) | |
1069 | return rc; | |
1070 | ||
d75d5388 | 1071 | rc = r820t_set_pll(priv, type, filt_cal_lo); |
a80abc58 MCC |
1072 | if (rc < 0 || !priv->has_lock) |
1073 | return rc; | |
1074 | ||
1075 | /* Start Trigger */ | |
1076 | rc = r820t_write_reg_mask(priv, 0x0b, 0x10, 0x10); | |
1077 | if (rc < 0) | |
1078 | return rc; | |
1079 | ||
9cc2570a | 1080 | usleep_range(1000, 2000); |
a80abc58 MCC |
1081 | |
1082 | /* Stop Trigger */ | |
1083 | rc = r820t_write_reg_mask(priv, 0x0b, 0x00, 0x10); | |
1084 | if (rc < 0) | |
1085 | return rc; | |
1086 | ||
1087 | /* set cali clk =off */ | |
1088 | rc = r820t_write_reg_mask(priv, 0x0f, 0x00, 0x04); | |
1089 | if (rc < 0) | |
1090 | return rc; | |
1091 | ||
1092 | /* Check if calibration worked */ | |
226471a1 | 1093 | rc = r820t_read(priv, 0x00, data, sizeof(data)); |
a80abc58 MCC |
1094 | if (rc < 0) |
1095 | return rc; | |
1096 | ||
1097 | priv->fil_cal_code = data[4] & 0x0f; | |
1098 | if (priv->fil_cal_code && priv->fil_cal_code != 0x0f) | |
1099 | break; | |
1100 | } | |
1101 | /* narrowest */ | |
1102 | if (priv->fil_cal_code == 0x0f) | |
1103 | priv->fil_cal_code = 0; | |
1104 | } | |
1105 | ||
1106 | rc = r820t_write_reg_mask(priv, 0x0a, | |
1107 | filt_q | priv->fil_cal_code, 0x1f); | |
1108 | if (rc < 0) | |
1109 | return rc; | |
1110 | ||
1111 | /* Set BW, Filter_gain, & HP corner */ | |
1112 | rc = r820t_write_reg_mask(priv, 0x0b, hp_cor, 0x10); | |
1113 | if (rc < 0) | |
1114 | return rc; | |
1115 | ||
1116 | ||
1117 | /* Set Img_R */ | |
1118 | rc = r820t_write_reg_mask(priv, 0x07, img_r, 0x80); | |
1119 | if (rc < 0) | |
1120 | return rc; | |
1121 | ||
1122 | /* Set filt_3dB, V6MHz */ | |
1123 | rc = r820t_write_reg_mask(priv, 0x06, filt_gain, 0x30); | |
1124 | if (rc < 0) | |
1125 | return rc; | |
1126 | ||
1127 | /* channel filter extension */ | |
1128 | rc = r820t_write_reg_mask(priv, 0x1e, ext_enable, 0x60); | |
1129 | if (rc < 0) | |
1130 | return rc; | |
1131 | ||
1132 | /* Loop through */ | |
1133 | rc = r820t_write_reg_mask(priv, 0x05, loop_through, 0x80); | |
1134 | if (rc < 0) | |
1135 | return rc; | |
1136 | ||
1137 | /* Loop through attenuation */ | |
1138 | rc = r820t_write_reg_mask(priv, 0x1f, lt_att, 0x80); | |
1139 | if (rc < 0) | |
1140 | return rc; | |
1141 | ||
1142 | /* filter extension widest */ | |
1143 | rc = r820t_write_reg_mask(priv, 0x0f, flt_ext_widest, 0x80); | |
1144 | if (rc < 0) | |
1145 | return rc; | |
1146 | ||
1147 | /* RF poly filter current */ | |
1148 | rc = r820t_write_reg_mask(priv, 0x19, polyfil_cur, 0x60); | |
1149 | if (rc < 0) | |
1150 | return rc; | |
1151 | ||
1152 | /* Store current standard. If it changes, re-calibrate the tuner */ | |
1153 | priv->delsys = delsys; | |
1154 | priv->type = type; | |
1155 | priv->std = std; | |
1156 | priv->bw = bw; | |
1157 | ||
1158 | return 0; | |
1159 | } | |
1160 | ||
f8fde0e0 MCC |
1161 | static int r820t_read_gain(struct r820t_priv *priv) |
1162 | { | |
1163 | u8 data[4]; | |
1164 | int rc; | |
1165 | ||
226471a1 | 1166 | rc = r820t_read(priv, 0x00, data, sizeof(data)); |
f8fde0e0 MCC |
1167 | if (rc < 0) |
1168 | return rc; | |
1169 | ||
1170 | return ((data[3] & 0x0f) << 1) + ((data[3] & 0xf0) >> 4); | |
1171 | } | |
1172 | ||
50786ddf MCC |
1173 | static int r820t_set_gain_mode(struct r820t_priv *priv, |
1174 | bool set_manual_gain, | |
1175 | int gain) | |
1176 | { | |
1177 | int rc; | |
1178 | ||
1179 | if (set_manual_gain) { | |
1180 | int i, total_gain = 0; | |
1181 | uint8_t mix_index = 0, lna_index = 0; | |
1182 | u8 data[4]; | |
1183 | ||
1184 | /* LNA auto off */ | |
1185 | rc = r820t_write_reg_mask(priv, 0x05, 0x10, 0x10); | |
1186 | if (rc < 0) | |
1187 | return rc; | |
1188 | ||
1189 | /* Mixer auto off */ | |
1190 | rc = r820t_write_reg_mask(priv, 0x07, 0, 0x10); | |
1191 | if (rc < 0) | |
1192 | return rc; | |
1193 | ||
226471a1 | 1194 | rc = r820t_read(priv, 0x00, data, sizeof(data)); |
50786ddf MCC |
1195 | if (rc < 0) |
1196 | return rc; | |
1197 | ||
1198 | /* set fixed VGA gain for now (16.3 dB) */ | |
1199 | rc = r820t_write_reg_mask(priv, 0x0c, 0x08, 0x9f); | |
1200 | if (rc < 0) | |
1201 | return rc; | |
1202 | ||
1203 | for (i = 0; i < 15; i++) { | |
1204 | if (total_gain >= gain) | |
1205 | break; | |
1206 | ||
1207 | total_gain += r820t_lna_gain_steps[++lna_index]; | |
1208 | ||
1209 | if (total_gain >= gain) | |
1210 | break; | |
1211 | ||
1212 | total_gain += r820t_mixer_gain_steps[++mix_index]; | |
1213 | } | |
1214 | ||
1215 | /* set LNA gain */ | |
1216 | rc = r820t_write_reg_mask(priv, 0x05, lna_index, 0x0f); | |
1217 | if (rc < 0) | |
1218 | return rc; | |
1219 | ||
1220 | /* set Mixer gain */ | |
1221 | rc = r820t_write_reg_mask(priv, 0x07, mix_index, 0x0f); | |
1222 | if (rc < 0) | |
1223 | return rc; | |
1224 | } else { | |
1225 | /* LNA */ | |
1226 | rc = r820t_write_reg_mask(priv, 0x05, 0, 0xef); | |
1227 | if (rc < 0) | |
1228 | return rc; | |
1229 | ||
1230 | /* Mixer */ | |
1231 | rc = r820t_write_reg_mask(priv, 0x07, 0x10, 0xef); | |
1232 | if (rc < 0) | |
1233 | return rc; | |
1234 | ||
1235 | /* set fixed VGA gain for now (26.5 dB) */ | |
1236 | rc = r820t_write_reg_mask(priv, 0x0c, 0x0b, 0x9f); | |
1237 | if (rc < 0) | |
1238 | return rc; | |
1239 | } | |
1240 | ||
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | ||
a80abc58 MCC |
1245 | static int generic_set_freq(struct dvb_frontend *fe, |
1246 | u32 freq /* in HZ */, | |
1247 | unsigned bw, | |
1248 | enum v4l2_tuner_type type, | |
1249 | v4l2_std_id std, u32 delsys) | |
1250 | { | |
1251 | struct r820t_priv *priv = fe->tuner_priv; | |
1252 | int rc = -EINVAL; | |
1253 | u32 lo_freq; | |
1254 | ||
1255 | tuner_dbg("should set frequency to %d kHz, bw %d MHz\n", | |
1256 | freq / 1000, bw); | |
1257 | ||
a7dd065f MCC |
1258 | rc = r820t_set_tv_standard(priv, bw, type, std, delsys); |
1259 | if (rc < 0) | |
1260 | goto err; | |
1261 | ||
a80abc58 MCC |
1262 | if ((type == V4L2_TUNER_ANALOG_TV) && (std == V4L2_STD_SECAM_LC)) |
1263 | lo_freq = freq - priv->int_freq; | |
1264 | else | |
1265 | lo_freq = freq + priv->int_freq; | |
1266 | ||
a80abc58 MCC |
1267 | rc = r820t_set_mux(priv, lo_freq); |
1268 | if (rc < 0) | |
1269 | goto err; | |
50786ddf MCC |
1270 | |
1271 | rc = r820t_set_gain_mode(priv, true, 0); | |
1272 | if (rc < 0) | |
1273 | goto err; | |
1274 | ||
d75d5388 | 1275 | rc = r820t_set_pll(priv, type, lo_freq); |
a80abc58 MCC |
1276 | if (rc < 0 || !priv->has_lock) |
1277 | goto err; | |
1278 | ||
1279 | rc = r820t_sysfreq_sel(priv, freq, type, std, delsys); | |
da31934f MCC |
1280 | if (rc < 0) |
1281 | goto err; | |
1282 | ||
1283 | tuner_dbg("%s: PLL locked on frequency %d Hz, gain=%d\n", | |
1284 | __func__, freq, r820t_read_gain(priv)); | |
1285 | ||
a80abc58 | 1286 | err: |
a80abc58 MCC |
1287 | |
1288 | if (rc < 0) | |
1289 | tuner_dbg("%s: failed=%d\n", __func__, rc); | |
1290 | return rc; | |
1291 | } | |
1292 | ||
1293 | /* | |
1294 | * r820t standby logic | |
1295 | */ | |
1296 | ||
1297 | static int r820t_standby(struct r820t_priv *priv) | |
1298 | { | |
1299 | int rc; | |
1300 | ||
1301 | rc = r820t_write_reg(priv, 0x06, 0xb1); | |
1302 | if (rc < 0) | |
1303 | return rc; | |
1304 | rc = r820t_write_reg(priv, 0x05, 0x03); | |
1305 | if (rc < 0) | |
1306 | return rc; | |
1307 | rc = r820t_write_reg(priv, 0x07, 0x3a); | |
1308 | if (rc < 0) | |
1309 | return rc; | |
1310 | rc = r820t_write_reg(priv, 0x08, 0x40); | |
1311 | if (rc < 0) | |
1312 | return rc; | |
1313 | rc = r820t_write_reg(priv, 0x09, 0xc0); | |
1314 | if (rc < 0) | |
1315 | return rc; | |
1316 | rc = r820t_write_reg(priv, 0x0a, 0x36); | |
1317 | if (rc < 0) | |
1318 | return rc; | |
1319 | rc = r820t_write_reg(priv, 0x0c, 0x35); | |
1320 | if (rc < 0) | |
1321 | return rc; | |
1322 | rc = r820t_write_reg(priv, 0x0f, 0x68); | |
1323 | if (rc < 0) | |
1324 | return rc; | |
1325 | rc = r820t_write_reg(priv, 0x11, 0x03); | |
1326 | if (rc < 0) | |
1327 | return rc; | |
1328 | rc = r820t_write_reg(priv, 0x17, 0xf4); | |
1329 | if (rc < 0) | |
1330 | return rc; | |
1331 | rc = r820t_write_reg(priv, 0x19, 0x0c); | |
1332 | ||
1333 | /* Force initial calibration */ | |
1334 | priv->type = -1; | |
1335 | ||
1336 | return rc; | |
1337 | } | |
1338 | ||
1339 | /* | |
1340 | * r820t device init logic | |
1341 | */ | |
1342 | ||
1343 | static int r820t_xtal_check(struct r820t_priv *priv) | |
1344 | { | |
1345 | int rc, i; | |
1346 | u8 data[3], val; | |
1347 | ||
1348 | /* Initialize the shadow registers */ | |
1349 | memcpy(priv->regs, r820t_init_array, sizeof(r820t_init_array)); | |
1350 | ||
1351 | /* cap 30pF & Drive Low */ | |
1352 | rc = r820t_write_reg_mask(priv, 0x10, 0x0b, 0x0b); | |
1353 | if (rc < 0) | |
1354 | return rc; | |
1355 | ||
1356 | /* set pll autotune = 128kHz */ | |
1357 | rc = r820t_write_reg_mask(priv, 0x1a, 0x00, 0x0c); | |
1358 | if (rc < 0) | |
1359 | return rc; | |
1360 | ||
1361 | /* set manual initial reg = 111111; */ | |
1362 | rc = r820t_write_reg_mask(priv, 0x13, 0x7f, 0x7f); | |
1363 | if (rc < 0) | |
1364 | return rc; | |
1365 | ||
1366 | /* set auto */ | |
1367 | rc = r820t_write_reg_mask(priv, 0x13, 0x00, 0x40); | |
1368 | if (rc < 0) | |
1369 | return rc; | |
1370 | ||
1371 | /* Try several xtal capacitor alternatives */ | |
1372 | for (i = 0; i < ARRAY_SIZE(r820t_xtal_capacitor); i++) { | |
1373 | rc = r820t_write_reg_mask(priv, 0x10, | |
1374 | r820t_xtal_capacitor[i][0], 0x1b); | |
1375 | if (rc < 0) | |
1376 | return rc; | |
1377 | ||
9cc2570a | 1378 | usleep_range(5000, 6000); |
a80abc58 | 1379 | |
226471a1 | 1380 | rc = r820t_read(priv, 0x00, data, sizeof(data)); |
a80abc58 MCC |
1381 | if (rc < 0) |
1382 | return rc; | |
1383 | if ((!data[2]) & 0x40) | |
1384 | continue; | |
1385 | ||
1386 | val = data[2] & 0x3f; | |
1387 | ||
1388 | if (priv->cfg->xtal == 16000000 && (val > 29 || val < 23)) | |
1389 | break; | |
1390 | ||
1391 | if (val != 0x3f) | |
1392 | break; | |
1393 | } | |
1394 | ||
1395 | if (i == ARRAY_SIZE(r820t_xtal_capacitor)) | |
1396 | return -EINVAL; | |
1397 | ||
1398 | return r820t_xtal_capacitor[i][1]; | |
1399 | } | |
1400 | ||
25cf4d46 MCC |
1401 | static int r820t_imr_prepare(struct r820t_priv *priv) |
1402 | { | |
1403 | int rc; | |
a80abc58 | 1404 | |
25cf4d46 MCC |
1405 | /* Initialize the shadow registers */ |
1406 | memcpy(priv->regs, r820t_init_array, sizeof(r820t_init_array)); | |
1407 | ||
1408 | /* lna off (air-in off) */ | |
1409 | rc = r820t_write_reg_mask(priv, 0x05, 0x20, 0x20); | |
1410 | if (rc < 0) | |
1411 | return rc; | |
1412 | ||
1413 | /* mixer gain mode = manual */ | |
1414 | rc = r820t_write_reg_mask(priv, 0x07, 0, 0x10); | |
1415 | if (rc < 0) | |
1416 | return rc; | |
1417 | ||
1418 | /* filter corner = lowest */ | |
1419 | rc = r820t_write_reg_mask(priv, 0x0a, 0x0f, 0x0f); | |
1420 | if (rc < 0) | |
1421 | return rc; | |
1422 | ||
1423 | /* filter bw=+2cap, hp=5M */ | |
1424 | rc = r820t_write_reg_mask(priv, 0x0b, 0x60, 0x6f); | |
1425 | if (rc < 0) | |
1426 | return rc; | |
1427 | ||
1428 | /* adc=on, vga code mode, gain = 26.5dB */ | |
1429 | rc = r820t_write_reg_mask(priv, 0x0c, 0x0b, 0x9f); | |
1430 | if (rc < 0) | |
1431 | return rc; | |
1432 | ||
1433 | /* ring clk = on */ | |
1434 | rc = r820t_write_reg_mask(priv, 0x0f, 0, 0x08); | |
1435 | if (rc < 0) | |
1436 | return rc; | |
1437 | ||
1438 | /* ring power = on */ | |
1439 | rc = r820t_write_reg_mask(priv, 0x18, 0x10, 0x10); | |
1440 | if (rc < 0) | |
1441 | return rc; | |
1442 | ||
1443 | /* from ring = ring pll in */ | |
1444 | rc = r820t_write_reg_mask(priv, 0x1c, 0x02, 0x02); | |
1445 | if (rc < 0) | |
1446 | return rc; | |
1447 | ||
1448 | /* sw_pdect = det3 */ | |
1449 | rc = r820t_write_reg_mask(priv, 0x1e, 0x80, 0x80); | |
1450 | if (rc < 0) | |
1451 | return rc; | |
1452 | ||
1453 | /* Set filt_3dB */ | |
1454 | rc = r820t_write_reg_mask(priv, 0x06, 0x20, 0x20); | |
1455 | ||
1456 | return rc; | |
1457 | } | |
1458 | ||
1459 | static int r820t_multi_read(struct r820t_priv *priv) | |
1460 | { | |
1461 | int rc, i; | |
1462 | u8 data[2], min = 0, max = 255, sum = 0; | |
1463 | ||
1464 | usleep_range(5000, 6000); | |
1465 | ||
1466 | for (i = 0; i < 6; i++) { | |
1467 | rc = r820t_read(priv, 0x00, data, sizeof(data)); | |
1468 | if (rc < 0) | |
1469 | return rc; | |
1470 | ||
1471 | sum += data[1]; | |
1472 | ||
1473 | if (data[1] < min) | |
1474 | min = data[1]; | |
1475 | ||
1476 | if (data[1] > max) | |
1477 | max = data[1]; | |
1478 | } | |
1479 | rc = sum - max - min; | |
1480 | ||
1481 | return rc; | |
1482 | } | |
1483 | ||
1484 | static int r820t_imr_cross(struct r820t_priv *priv, | |
1485 | struct r820t_sect_type iq_point[3], | |
1486 | u8 *x_direct) | |
1487 | { | |
1488 | struct r820t_sect_type cross[5]; /* (0,0)(0,Q-1)(0,I-1)(Q-1,0)(I-1,0) */ | |
1489 | struct r820t_sect_type tmp; | |
1490 | int i, rc; | |
1491 | u8 reg08, reg09; | |
1492 | ||
1493 | reg08 = r820t_read_cache_reg(priv, 8) & 0xc0; | |
1494 | reg09 = r820t_read_cache_reg(priv, 9) & 0xc0; | |
1495 | ||
1496 | tmp.gain_x = 0; | |
1497 | tmp.phase_y = 0; | |
1498 | tmp.value = 255; | |
1499 | ||
1500 | for (i = 0; i < 5; i++) { | |
1501 | switch (i) { | |
1502 | case 0: | |
1503 | cross[i].gain_x = reg08; | |
1504 | cross[i].phase_y = reg09; | |
1505 | break; | |
1506 | case 1: | |
1507 | cross[i].gain_x = reg08; /* 0 */ | |
1508 | cross[i].phase_y = reg09 + 1; /* Q-1 */ | |
1509 | break; | |
1510 | case 2: | |
1511 | cross[i].gain_x = reg08; /* 0 */ | |
1512 | cross[i].phase_y = (reg09 | 0x20) + 1; /* I-1 */ | |
1513 | break; | |
1514 | case 3: | |
1515 | cross[i].gain_x = reg08 + 1; /* Q-1 */ | |
1516 | cross[i].phase_y = reg09; | |
1517 | break; | |
1518 | default: | |
1519 | cross[i].gain_x = (reg08 | 0x20) + 1; /* I-1 */ | |
1520 | cross[i].phase_y = reg09; | |
1521 | } | |
1522 | ||
1523 | rc = r820t_write_reg(priv, 0x08, cross[i].gain_x); | |
1524 | if (rc < 0) | |
1525 | return rc; | |
1526 | ||
1527 | rc = r820t_write_reg(priv, 0x09, cross[i].phase_y); | |
1528 | if (rc < 0) | |
1529 | return rc; | |
1530 | ||
1531 | rc = r820t_multi_read(priv); | |
1532 | if (rc < 0) | |
1533 | return rc; | |
1534 | ||
1535 | cross[i].value = rc; | |
1536 | ||
1537 | if (cross[i].value < tmp.value) | |
1538 | memcpy(&tmp, &cross[i], sizeof(tmp)); | |
1539 | } | |
1540 | ||
1541 | if ((tmp.phase_y & 0x1f) == 1) { /* y-direction */ | |
1542 | *x_direct = 0; | |
1543 | ||
1544 | iq_point[0] = cross[0]; | |
1545 | iq_point[1] = cross[1]; | |
1546 | iq_point[2] = cross[2]; | |
1547 | } else { /* (0,0) or x-direction */ | |
1548 | *x_direct = 1; | |
1549 | ||
1550 | iq_point[0] = cross[0]; | |
1551 | iq_point[1] = cross[3]; | |
1552 | iq_point[2] = cross[4]; | |
1553 | } | |
1554 | return 0; | |
1555 | } | |
1556 | ||
1557 | static void r820t_compre_cor(struct r820t_sect_type iq[3]) | |
1558 | { | |
1559 | int i; | |
1560 | ||
1561 | for (i = 3; i > 0; i--) { | |
1562 | if (iq[0].value > iq[i - 1].value) | |
1563 | swap(iq[0], iq[i - 1]); | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | static int r820t_compre_step(struct r820t_priv *priv, | |
1568 | struct r820t_sect_type iq[3], u8 reg) | |
1569 | { | |
1570 | int rc; | |
1571 | struct r820t_sect_type tmp; | |
1572 | ||
1573 | /* | |
1574 | * Purpose: if (Gain<9 or Phase<9), Gain+1 or Phase+1 and compare | |
1575 | * with min value: | |
1576 | * new < min => update to min and continue | |
1577 | * new > min => Exit | |
1578 | */ | |
1579 | ||
1580 | /* min value already saved in iq[0] */ | |
1581 | tmp.phase_y = iq[0].phase_y; | |
1582 | tmp.gain_x = iq[0].gain_x; | |
1583 | ||
1584 | while (((tmp.gain_x & 0x1f) < IMR_TRIAL) && | |
1585 | ((tmp.phase_y & 0x1f) < IMR_TRIAL)) { | |
1586 | if (reg == 0x08) | |
1587 | tmp.gain_x++; | |
1588 | else | |
1589 | tmp.phase_y++; | |
1590 | ||
1591 | rc = r820t_write_reg(priv, 0x08, tmp.gain_x); | |
1592 | if (rc < 0) | |
1593 | return rc; | |
1594 | ||
1595 | rc = r820t_write_reg(priv, 0x09, tmp.phase_y); | |
1596 | if (rc < 0) | |
1597 | return rc; | |
1598 | ||
1599 | rc = r820t_multi_read(priv); | |
1600 | if (rc < 0) | |
1601 | return rc; | |
1602 | tmp.value = rc; | |
1603 | ||
1604 | if (tmp.value <= iq[0].value) { | |
1605 | iq[0].gain_x = tmp.gain_x; | |
1606 | iq[0].phase_y = tmp.phase_y; | |
1607 | iq[0].value = tmp.value; | |
1608 | } else { | |
1609 | return 0; | |
1610 | } | |
1611 | ||
1612 | } | |
1613 | ||
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | static int r820t_iq_tree(struct r820t_priv *priv, | |
1618 | struct r820t_sect_type iq[3], | |
1619 | u8 fix_val, u8 var_val, u8 fix_reg) | |
1620 | { | |
1621 | int rc, i; | |
1622 | u8 tmp, var_reg; | |
1623 | ||
1624 | /* | |
1625 | * record IMC results by input gain/phase location then adjust | |
1626 | * gain or phase positive 1 step and negtive 1 step, | |
1627 | * both record results | |
1628 | */ | |
1629 | ||
1630 | if (fix_reg == 0x08) | |
1631 | var_reg = 0x09; | |
1632 | else | |
1633 | var_reg = 0x08; | |
1634 | ||
1635 | for (i = 0; i < 3; i++) { | |
1636 | rc = r820t_write_reg(priv, fix_reg, fix_val); | |
1637 | if (rc < 0) | |
1638 | return rc; | |
1639 | ||
1640 | rc = r820t_write_reg(priv, var_reg, var_val); | |
1641 | if (rc < 0) | |
1642 | return rc; | |
1643 | ||
1644 | rc = r820t_multi_read(priv); | |
1645 | if (rc < 0) | |
1646 | return rc; | |
1647 | iq[i].value = rc; | |
1648 | ||
1649 | if (fix_reg == 0x08) { | |
1650 | iq[i].gain_x = fix_val; | |
1651 | iq[i].phase_y = var_val; | |
1652 | } else { | |
1653 | iq[i].phase_y = fix_val; | |
1654 | iq[i].gain_x = var_val; | |
1655 | } | |
1656 | ||
1657 | if (i == 0) { /* try right-side point */ | |
1658 | var_val++; | |
1659 | } else if (i == 1) { /* try left-side point */ | |
1660 | /* if absolute location is 1, change I/Q direction */ | |
1661 | if ((var_val & 0x1f) < 0x02) { | |
1662 | tmp = 2 - (var_val & 0x1f); | |
1663 | ||
1664 | /* b[5]:I/Q selection. 0:Q-path, 1:I-path */ | |
1665 | if (var_val & 0x20) { | |
1666 | var_val &= 0xc0; | |
1667 | var_val |= tmp; | |
1668 | } else { | |
1669 | var_val |= 0x20 | tmp; | |
1670 | } | |
1671 | } else { | |
1672 | var_val -= 2; | |
1673 | } | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | return 0; | |
1678 | } | |
1679 | ||
1680 | static int r820t_section(struct r820t_priv *priv, | |
1681 | struct r820t_sect_type *iq_point) | |
1682 | { | |
1683 | int rc; | |
1684 | struct r820t_sect_type compare_iq[3], compare_bet[3]; | |
1685 | ||
1686 | /* Try X-1 column and save min result to compare_bet[0] */ | |
1687 | if (!(iq_point->gain_x & 0x1f)) | |
1688 | compare_iq[0].gain_x = ((iq_point->gain_x) & 0xdf) + 1; /* Q-path, Gain=1 */ | |
1689 | else | |
1690 | compare_iq[0].gain_x = iq_point->gain_x - 1; /* left point */ | |
1691 | compare_iq[0].phase_y = iq_point->phase_y; | |
1692 | ||
1693 | /* y-direction */ | |
1694 | rc = r820t_iq_tree(priv, compare_iq, compare_iq[0].gain_x, | |
1695 | compare_iq[0].phase_y, 0x08); | |
1696 | if (rc < 0) | |
1697 | return rc; | |
1698 | ||
1699 | r820t_compre_cor(compare_iq); | |
1700 | ||
1701 | compare_bet[0] = compare_iq[0]; | |
1702 | ||
1703 | /* Try X column and save min result to compare_bet[1] */ | |
1704 | compare_iq[0].gain_x = iq_point->gain_x; | |
1705 | compare_iq[0].phase_y = iq_point->phase_y; | |
1706 | ||
1707 | rc = r820t_iq_tree(priv, compare_iq, compare_iq[0].gain_x, | |
1708 | compare_iq[0].phase_y, 0x08); | |
1709 | if (rc < 0) | |
1710 | return rc; | |
1711 | ||
1712 | r820t_compre_cor(compare_iq); | |
1713 | ||
1714 | compare_bet[1] = compare_iq[0]; | |
1715 | ||
1716 | /* Try X+1 column and save min result to compare_bet[2] */ | |
1717 | if ((iq_point->gain_x & 0x1f) == 0x00) | |
1718 | compare_iq[0].gain_x = ((iq_point->gain_x) | 0x20) + 1; /* I-path, Gain=1 */ | |
1719 | else | |
1720 | compare_iq[0].gain_x = iq_point->gain_x + 1; | |
1721 | compare_iq[0].phase_y = iq_point->phase_y; | |
1722 | ||
1723 | rc = r820t_iq_tree(priv, compare_iq, compare_iq[0].gain_x, | |
1724 | compare_iq[0].phase_y, 0x08); | |
1725 | if (rc < 0) | |
1726 | return rc; | |
1727 | ||
1728 | r820t_compre_cor(compare_iq); | |
1729 | ||
1730 | compare_bet[2] = compare_iq[0]; | |
1731 | ||
1732 | r820t_compre_cor(compare_bet); | |
1733 | ||
1734 | *iq_point = compare_bet[0]; | |
1735 | ||
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | static int r820t_vga_adjust(struct r820t_priv *priv) | |
1740 | { | |
1741 | int rc; | |
1742 | u8 vga_count; | |
1743 | ||
1744 | /* increase vga power to let image significant */ | |
1745 | for (vga_count = 12; vga_count < 16; vga_count++) { | |
1746 | rc = r820t_write_reg_mask(priv, 0x0c, vga_count, 0x0f); | |
1747 | if (rc < 0) | |
1748 | return rc; | |
1749 | ||
1750 | usleep_range(10000, 11000); | |
1751 | ||
1752 | rc = r820t_multi_read(priv); | |
1753 | if (rc < 0) | |
1754 | return rc; | |
1755 | ||
1756 | if (rc > 40 * 4) | |
1757 | break; | |
1758 | } | |
1759 | ||
1760 | return 0; | |
1761 | } | |
1762 | ||
1763 | static int r820t_iq(struct r820t_priv *priv, struct r820t_sect_type *iq_pont) | |
1764 | { | |
1765 | struct r820t_sect_type compare_iq[3]; | |
1766 | int rc; | |
1767 | u8 x_direction = 0; /* 1:x, 0:y */ | |
1768 | u8 dir_reg, other_reg; | |
1769 | ||
1770 | r820t_vga_adjust(priv); | |
1771 | ||
1772 | rc = r820t_imr_cross(priv, compare_iq, &x_direction); | |
1773 | if (rc < 0) | |
1774 | return rc; | |
1775 | ||
1776 | if (x_direction == 1) { | |
1777 | dir_reg = 0x08; | |
1778 | other_reg = 0x09; | |
1779 | } else { | |
1780 | dir_reg = 0x09; | |
1781 | other_reg = 0x08; | |
1782 | } | |
1783 | ||
1784 | /* compare and find min of 3 points. determine i/q direction */ | |
1785 | r820t_compre_cor(compare_iq); | |
1786 | ||
1787 | /* increase step to find min value of this direction */ | |
1788 | rc = r820t_compre_step(priv, compare_iq, dir_reg); | |
1789 | if (rc < 0) | |
1790 | return rc; | |
1791 | ||
1792 | /* the other direction */ | |
1793 | rc = r820t_iq_tree(priv, compare_iq, compare_iq[0].gain_x, | |
1794 | compare_iq[0].phase_y, dir_reg); | |
1795 | if (rc < 0) | |
1796 | return rc; | |
1797 | ||
1798 | /* compare and find min of 3 points. determine i/q direction */ | |
1799 | r820t_compre_cor(compare_iq); | |
1800 | ||
1801 | /* increase step to find min value on this direction */ | |
1802 | rc = r820t_compre_step(priv, compare_iq, other_reg); | |
1803 | if (rc < 0) | |
1804 | return rc; | |
1805 | ||
1806 | /* check 3 points again */ | |
1807 | rc = r820t_iq_tree(priv, compare_iq, compare_iq[0].gain_x, | |
1808 | compare_iq[0].phase_y, other_reg); | |
1809 | if (rc < 0) | |
1810 | return rc; | |
1811 | ||
1812 | r820t_compre_cor(compare_iq); | |
1813 | ||
1814 | /* section-9 check */ | |
1815 | rc = r820t_section(priv, compare_iq); | |
1816 | ||
1817 | *iq_pont = compare_iq[0]; | |
1818 | ||
1819 | /* reset gain/phase control setting */ | |
1820 | rc = r820t_write_reg_mask(priv, 0x08, 0, 0x3f); | |
1821 | if (rc < 0) | |
1822 | return rc; | |
1823 | ||
1824 | rc = r820t_write_reg_mask(priv, 0x09, 0, 0x3f); | |
1825 | ||
1826 | return rc; | |
1827 | } | |
1828 | ||
1829 | static int r820t_f_imr(struct r820t_priv *priv, struct r820t_sect_type *iq_pont) | |
1830 | { | |
1831 | int rc; | |
1832 | ||
1833 | r820t_vga_adjust(priv); | |
1834 | ||
1835 | /* | |
1836 | * search surrounding points from previous point | |
1837 | * try (x-1), (x), (x+1) columns, and find min IMR result point | |
1838 | */ | |
1839 | rc = r820t_section(priv, iq_pont); | |
1840 | if (rc < 0) | |
1841 | return rc; | |
1842 | ||
1843 | return 0; | |
1844 | } | |
1845 | ||
1846 | static int r820t_imr(struct r820t_priv *priv, unsigned imr_mem, bool im_flag) | |
1847 | { | |
1848 | struct r820t_sect_type imr_point; | |
1849 | int rc; | |
1850 | u32 ring_vco, ring_freq, ring_ref; | |
1851 | u8 n_ring, n; | |
1852 | int reg18, reg19, reg1f; | |
1853 | ||
1854 | if (priv->cfg->xtal > 24000000) | |
1855 | ring_ref = priv->cfg->xtal / 2; | |
1856 | else | |
1857 | ring_ref = priv->cfg->xtal; | |
1858 | ||
1859 | for (n = 0; n < 16; n++) { | |
1860 | if ((16 + n) * 8 * ring_ref >= 3100000) { | |
1861 | n_ring = n; | |
1862 | break; | |
1863 | } | |
1864 | ||
1865 | /* n_ring not found */ | |
1866 | if (n == 15) | |
1867 | n_ring = n; | |
1868 | } | |
1869 | ||
1870 | reg18 = r820t_read_cache_reg(priv, 0x18); | |
1871 | reg19 = r820t_read_cache_reg(priv, 0x19); | |
1872 | reg1f = r820t_read_cache_reg(priv, 0x1f); | |
1873 | ||
1874 | reg18 &= 0xf0; /* set ring[3:0] */ | |
1875 | reg18 |= n_ring; | |
1876 | ||
1877 | ring_vco = (16 + n_ring) * 8 * ring_ref; | |
1878 | ||
1879 | reg18 &= 0xdf; /* clear ring_se23 */ | |
1880 | reg19 &= 0xfc; /* clear ring_seldiv */ | |
1881 | reg1f &= 0xfc; /* clear ring_att */ | |
1882 | ||
1883 | switch (imr_mem) { | |
1884 | case 0: | |
1885 | ring_freq = ring_vco / 48; | |
1886 | reg18 |= 0x20; /* ring_se23 = 1 */ | |
1887 | reg19 |= 0x03; /* ring_seldiv = 3 */ | |
1888 | reg1f |= 0x02; /* ring_att 10 */ | |
1889 | break; | |
1890 | case 1: | |
1891 | ring_freq = ring_vco / 16; | |
1892 | reg18 |= 0x00; /* ring_se23 = 0 */ | |
1893 | reg19 |= 0x02; /* ring_seldiv = 2 */ | |
1894 | reg1f |= 0x00; /* pw_ring 00 */ | |
1895 | break; | |
1896 | case 2: | |
1897 | ring_freq = ring_vco / 8; | |
1898 | reg18 |= 0x00; /* ring_se23 = 0 */ | |
1899 | reg19 |= 0x01; /* ring_seldiv = 1 */ | |
1900 | reg1f |= 0x03; /* pw_ring 11 */ | |
1901 | break; | |
1902 | case 3: | |
1903 | ring_freq = ring_vco / 6; | |
1904 | reg18 |= 0x20; /* ring_se23 = 1 */ | |
1905 | reg19 |= 0x00; /* ring_seldiv = 0 */ | |
1906 | reg1f |= 0x03; /* pw_ring 11 */ | |
1907 | break; | |
1908 | case 4: | |
1909 | ring_freq = ring_vco / 4; | |
1910 | reg18 |= 0x00; /* ring_se23 = 0 */ | |
1911 | reg19 |= 0x00; /* ring_seldiv = 0 */ | |
1912 | reg1f |= 0x01; /* pw_ring 01 */ | |
1913 | break; | |
1914 | default: | |
1915 | ring_freq = ring_vco / 4; | |
1916 | reg18 |= 0x00; /* ring_se23 = 0 */ | |
1917 | reg19 |= 0x00; /* ring_seldiv = 0 */ | |
1918 | reg1f |= 0x01; /* pw_ring 01 */ | |
1919 | break; | |
1920 | } | |
1921 | ||
1922 | ||
1923 | /* write pw_ring, n_ring, ringdiv2 registers */ | |
1924 | ||
1925 | /* n_ring, ring_se23 */ | |
1926 | rc = r820t_write_reg(priv, 0x18, reg18); | |
1927 | if (rc < 0) | |
1928 | return rc; | |
1929 | ||
1930 | /* ring_sediv */ | |
1931 | rc = r820t_write_reg(priv, 0x19, reg19); | |
1932 | if (rc < 0) | |
1933 | return rc; | |
1934 | ||
1935 | /* pw_ring */ | |
1936 | rc = r820t_write_reg(priv, 0x1f, reg1f); | |
1937 | if (rc < 0) | |
1938 | return rc; | |
1939 | ||
1940 | /* mux input freq ~ rf_in freq */ | |
1941 | rc = r820t_set_mux(priv, (ring_freq - 5300) * 1000); | |
1942 | if (rc < 0) | |
1943 | return rc; | |
1944 | ||
1945 | rc = r820t_set_pll(priv, V4L2_TUNER_DIGITAL_TV, | |
1946 | (ring_freq - 5300) * 1000); | |
1947 | if (!priv->has_lock) | |
1948 | rc = -EINVAL; | |
1949 | if (rc < 0) | |
1950 | return rc; | |
1951 | ||
1952 | if (im_flag) { | |
1953 | rc = r820t_iq(priv, &imr_point); | |
1954 | } else { | |
1955 | imr_point.gain_x = priv->imr_data[3].gain_x; | |
1956 | imr_point.phase_y = priv->imr_data[3].phase_y; | |
1957 | imr_point.value = priv->imr_data[3].value; | |
1958 | ||
1959 | rc = r820t_f_imr(priv, &imr_point); | |
1960 | } | |
1961 | if (rc < 0) | |
1962 | return rc; | |
1963 | ||
1964 | /* save IMR value */ | |
1965 | switch (imr_mem) { | |
1966 | case 0: | |
1967 | priv->imr_data[0].gain_x = imr_point.gain_x; | |
1968 | priv->imr_data[0].phase_y = imr_point.phase_y; | |
1969 | priv->imr_data[0].value = imr_point.value; | |
1970 | break; | |
1971 | case 1: | |
1972 | priv->imr_data[1].gain_x = imr_point.gain_x; | |
1973 | priv->imr_data[1].phase_y = imr_point.phase_y; | |
1974 | priv->imr_data[1].value = imr_point.value; | |
1975 | break; | |
1976 | case 2: | |
1977 | priv->imr_data[2].gain_x = imr_point.gain_x; | |
1978 | priv->imr_data[2].phase_y = imr_point.phase_y; | |
1979 | priv->imr_data[2].value = imr_point.value; | |
1980 | break; | |
1981 | case 3: | |
1982 | priv->imr_data[3].gain_x = imr_point.gain_x; | |
1983 | priv->imr_data[3].phase_y = imr_point.phase_y; | |
1984 | priv->imr_data[3].value = imr_point.value; | |
1985 | break; | |
1986 | case 4: | |
1987 | priv->imr_data[4].gain_x = imr_point.gain_x; | |
1988 | priv->imr_data[4].phase_y = imr_point.phase_y; | |
1989 | priv->imr_data[4].value = imr_point.value; | |
1990 | break; | |
1991 | default: | |
1992 | priv->imr_data[4].gain_x = imr_point.gain_x; | |
1993 | priv->imr_data[4].phase_y = imr_point.phase_y; | |
1994 | priv->imr_data[4].value = imr_point.value; | |
1995 | break; | |
1996 | } | |
1997 | ||
1998 | return 0; | |
1999 | } | |
2000 | ||
2001 | static int r820t_imr_callibrate(struct r820t_priv *priv) | |
a80abc58 | 2002 | { |
a80abc58 MCC |
2003 | int rc, i; |
2004 | int xtal_cap = 0; | |
2005 | ||
52775fd5 | 2006 | if (priv->init_done) |
25cf4d46 | 2007 | return 0; |
a80abc58 | 2008 | |
25cf4d46 | 2009 | /* Detect Xtal capacitance */ |
a80abc58 MCC |
2010 | if ((priv->cfg->rafael_chip == CHIP_R820T) || |
2011 | (priv->cfg->rafael_chip == CHIP_R828S) || | |
2012 | (priv->cfg->rafael_chip == CHIP_R820C)) { | |
2013 | priv->xtal_cap_sel = XTAL_HIGH_CAP_0P; | |
2014 | } else { | |
4176e7ea MCC |
2015 | /* Initialize registers */ |
2016 | rc = r820t_write(priv, 0x05, | |
2017 | r820t_init_array, sizeof(r820t_init_array)); | |
2018 | if (rc < 0) | |
2019 | return rc; | |
a80abc58 MCC |
2020 | for (i = 0; i < 3; i++) { |
2021 | rc = r820t_xtal_check(priv); | |
2022 | if (rc < 0) | |
25cf4d46 | 2023 | return rc; |
a80abc58 MCC |
2024 | if (!i || rc > xtal_cap) |
2025 | xtal_cap = rc; | |
2026 | } | |
2027 | priv->xtal_cap_sel = xtal_cap; | |
2028 | } | |
2029 | ||
52775fd5 MCC |
2030 | /* |
2031 | * Disables IMR callibration. That emulates the same behaviour | |
2032 | * as what is done by rtl-sdr userspace library. Useful for testing | |
2033 | */ | |
2034 | if (no_imr_cal) { | |
2035 | priv->init_done = true; | |
2036 | ||
2037 | return 0; | |
2038 | } | |
2039 | ||
a80abc58 MCC |
2040 | /* Initialize registers */ |
2041 | rc = r820t_write(priv, 0x05, | |
2042 | r820t_init_array, sizeof(r820t_init_array)); | |
25cf4d46 MCC |
2043 | if (rc < 0) |
2044 | return rc; | |
2045 | ||
2046 | rc = r820t_imr_prepare(priv); | |
2047 | if (rc < 0) | |
2048 | return rc; | |
2049 | ||
2050 | rc = r820t_imr(priv, 3, true); | |
2051 | if (rc < 0) | |
2052 | return rc; | |
2053 | rc = r820t_imr(priv, 1, false); | |
2054 | if (rc < 0) | |
2055 | return rc; | |
2056 | rc = r820t_imr(priv, 0, false); | |
2057 | if (rc < 0) | |
2058 | return rc; | |
2059 | rc = r820t_imr(priv, 2, false); | |
2060 | if (rc < 0) | |
2061 | return rc; | |
2062 | rc = r820t_imr(priv, 4, false); | |
2063 | if (rc < 0) | |
2064 | return rc; | |
2065 | ||
52775fd5 | 2066 | priv->init_done = true; |
25cf4d46 MCC |
2067 | priv->imr_done = true; |
2068 | ||
2069 | return 0; | |
2070 | } | |
2071 | ||
6596e880 MCC |
2072 | #if 0 |
2073 | /* Not used, for now */ | |
2074 | static int r820t_gpio(struct r820t_priv *priv, bool enable) | |
2075 | { | |
2076 | return r820t_write_reg_mask(priv, 0x0f, enable ? 1 : 0, 0x01); | |
2077 | } | |
2078 | #endif | |
2079 | ||
25cf4d46 MCC |
2080 | /* |
2081 | * r820t frontend operations and tuner attach code | |
2082 | * | |
2083 | * All driver locks and i2c control are only in this part of the code | |
2084 | */ | |
2085 | ||
2086 | static int r820t_init(struct dvb_frontend *fe) | |
2087 | { | |
2088 | struct r820t_priv *priv = fe->tuner_priv; | |
2089 | int rc; | |
2090 | ||
2091 | tuner_dbg("%s:\n", __func__); | |
2092 | ||
2093 | mutex_lock(&priv->lock); | |
2094 | if (fe->ops.i2c_gate_ctrl) | |
2095 | fe->ops.i2c_gate_ctrl(fe, 1); | |
2096 | ||
2097 | rc = r820t_imr_callibrate(priv); | |
2098 | if (rc < 0) | |
2099 | goto err; | |
2100 | ||
2101 | /* Initialize registers */ | |
2102 | rc = r820t_write(priv, 0x05, | |
2103 | r820t_init_array, sizeof(r820t_init_array)); | |
a80abc58 | 2104 | |
a80abc58 MCC |
2105 | err: |
2106 | if (fe->ops.i2c_gate_ctrl) | |
2107 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7a5ef30d | 2108 | mutex_unlock(&priv->lock); |
a80abc58 | 2109 | |
7a5ef30d MCC |
2110 | if (rc < 0) |
2111 | tuner_dbg("%s: failed=%d\n", __func__, rc); | |
a80abc58 MCC |
2112 | return rc; |
2113 | } | |
2114 | ||
2115 | static int r820t_sleep(struct dvb_frontend *fe) | |
2116 | { | |
2117 | struct r820t_priv *priv = fe->tuner_priv; | |
2118 | int rc; | |
2119 | ||
2120 | tuner_dbg("%s:\n", __func__); | |
2121 | ||
7a5ef30d | 2122 | mutex_lock(&priv->lock); |
a80abc58 MCC |
2123 | if (fe->ops.i2c_gate_ctrl) |
2124 | fe->ops.i2c_gate_ctrl(fe, 1); | |
2125 | ||
a80abc58 | 2126 | rc = r820t_standby(priv); |
a80abc58 MCC |
2127 | |
2128 | if (fe->ops.i2c_gate_ctrl) | |
2129 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7a5ef30d | 2130 | mutex_unlock(&priv->lock); |
a80abc58 MCC |
2131 | |
2132 | tuner_dbg("%s: failed=%d\n", __func__, rc); | |
2133 | return rc; | |
2134 | } | |
2135 | ||
2136 | static int r820t_set_analog_freq(struct dvb_frontend *fe, | |
2137 | struct analog_parameters *p) | |
2138 | { | |
2139 | struct r820t_priv *priv = fe->tuner_priv; | |
2140 | unsigned bw; | |
7a5ef30d | 2141 | int rc; |
a80abc58 MCC |
2142 | |
2143 | tuner_dbg("%s called\n", __func__); | |
2144 | ||
2145 | /* if std is not defined, choose one */ | |
2146 | if (!p->std) | |
2147 | p->std = V4L2_STD_MN; | |
2148 | ||
2149 | if ((p->std == V4L2_STD_PAL_M) || (p->std == V4L2_STD_NTSC)) | |
2150 | bw = 6; | |
2151 | else | |
2152 | bw = 8; | |
2153 | ||
7a5ef30d MCC |
2154 | mutex_lock(&priv->lock); |
2155 | if (fe->ops.i2c_gate_ctrl) | |
2156 | fe->ops.i2c_gate_ctrl(fe, 1); | |
2157 | ||
2158 | rc = generic_set_freq(fe, 62500l * p->frequency, bw, | |
2159 | V4L2_TUNER_ANALOG_TV, p->std, SYS_UNDEFINED); | |
2160 | ||
2161 | if (fe->ops.i2c_gate_ctrl) | |
2162 | fe->ops.i2c_gate_ctrl(fe, 0); | |
2163 | mutex_unlock(&priv->lock); | |
2164 | ||
2165 | return rc; | |
a80abc58 MCC |
2166 | } |
2167 | ||
2168 | static int r820t_set_params(struct dvb_frontend *fe) | |
2169 | { | |
2170 | struct r820t_priv *priv = fe->tuner_priv; | |
2171 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
2172 | int rc; | |
2173 | unsigned bw; | |
2174 | ||
2175 | tuner_dbg("%s: delivery_system=%d frequency=%d bandwidth_hz=%d\n", | |
2176 | __func__, c->delivery_system, c->frequency, c->bandwidth_hz); | |
2177 | ||
7a5ef30d | 2178 | mutex_lock(&priv->lock); |
a80abc58 MCC |
2179 | if (fe->ops.i2c_gate_ctrl) |
2180 | fe->ops.i2c_gate_ctrl(fe, 1); | |
2181 | ||
2182 | bw = (c->bandwidth_hz + 500000) / 1000000; | |
2183 | if (!bw) | |
2184 | bw = 8; | |
2185 | ||
2186 | rc = generic_set_freq(fe, c->frequency, bw, | |
2187 | V4L2_TUNER_DIGITAL_TV, 0, c->delivery_system); | |
2188 | ||
2189 | if (fe->ops.i2c_gate_ctrl) | |
2190 | fe->ops.i2c_gate_ctrl(fe, 0); | |
7a5ef30d | 2191 | mutex_unlock(&priv->lock); |
a80abc58 MCC |
2192 | |
2193 | if (rc) | |
2194 | tuner_dbg("%s: failed=%d\n", __func__, rc); | |
2195 | return rc; | |
2196 | } | |
2197 | ||
2198 | static int r820t_signal(struct dvb_frontend *fe, u16 *strength) | |
2199 | { | |
2200 | struct r820t_priv *priv = fe->tuner_priv; | |
f8fde0e0 | 2201 | int rc = 0; |
a80abc58 | 2202 | |
7a5ef30d MCC |
2203 | mutex_lock(&priv->lock); |
2204 | if (fe->ops.i2c_gate_ctrl) | |
2205 | fe->ops.i2c_gate_ctrl(fe, 1); | |
2206 | ||
f8fde0e0 MCC |
2207 | if (priv->has_lock) { |
2208 | rc = r820t_read_gain(priv); | |
2209 | if (rc < 0) | |
7a5ef30d | 2210 | goto err; |
f8fde0e0 MCC |
2211 | |
2212 | /* A higher gain at LNA means a lower signal strength */ | |
2213 | *strength = (45 - rc) << 4 | 0xff; | |
75c1819e MCC |
2214 | if (*strength == 0xff) |
2215 | *strength = 0; | |
f8fde0e0 | 2216 | } else { |
a80abc58 | 2217 | *strength = 0; |
f8fde0e0 MCC |
2218 | } |
2219 | ||
7a5ef30d MCC |
2220 | err: |
2221 | if (fe->ops.i2c_gate_ctrl) | |
2222 | fe->ops.i2c_gate_ctrl(fe, 0); | |
2223 | mutex_unlock(&priv->lock); | |
2224 | ||
f8fde0e0 MCC |
2225 | tuner_dbg("%s: %s, gain=%d strength=%d\n", |
2226 | __func__, | |
2227 | priv->has_lock ? "PLL locked" : "no signal", | |
2228 | rc, *strength); | |
a80abc58 MCC |
2229 | |
2230 | return 0; | |
2231 | } | |
2232 | ||
2233 | static int r820t_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) | |
2234 | { | |
2235 | struct r820t_priv *priv = fe->tuner_priv; | |
2236 | ||
2237 | tuner_dbg("%s:\n", __func__); | |
2238 | ||
2239 | *frequency = priv->int_freq; | |
2240 | ||
2241 | return 0; | |
2242 | } | |
2243 | ||
2244 | static int r820t_release(struct dvb_frontend *fe) | |
2245 | { | |
2246 | struct r820t_priv *priv = fe->tuner_priv; | |
2247 | ||
2248 | tuner_dbg("%s:\n", __func__); | |
2249 | ||
2250 | mutex_lock(&r820t_list_mutex); | |
2251 | ||
2252 | if (priv) | |
2253 | hybrid_tuner_release_state(priv); | |
2254 | ||
2255 | mutex_unlock(&r820t_list_mutex); | |
2256 | ||
2257 | fe->tuner_priv = NULL; | |
2258 | ||
2259 | kfree(fe->tuner_priv); | |
2260 | ||
2261 | return 0; | |
2262 | } | |
2263 | ||
2264 | static const struct dvb_tuner_ops r820t_tuner_ops = { | |
2265 | .info = { | |
2266 | .name = "Rafael Micro R820T", | |
2267 | .frequency_min = 42000000, | |
2268 | .frequency_max = 1002000000, | |
2269 | }, | |
2270 | .init = r820t_init, | |
2271 | .release = r820t_release, | |
2272 | .sleep = r820t_sleep, | |
2273 | .set_params = r820t_set_params, | |
2274 | .set_analog_params = r820t_set_analog_freq, | |
2275 | .get_if_frequency = r820t_get_if_frequency, | |
2276 | .get_rf_strength = r820t_signal, | |
2277 | }; | |
2278 | ||
2279 | struct dvb_frontend *r820t_attach(struct dvb_frontend *fe, | |
2280 | struct i2c_adapter *i2c, | |
2281 | const struct r820t_config *cfg) | |
2282 | { | |
2283 | struct r820t_priv *priv; | |
2284 | int rc = -ENODEV; | |
2285 | u8 data[5]; | |
2286 | int instance; | |
2287 | ||
2288 | mutex_lock(&r820t_list_mutex); | |
2289 | ||
2290 | instance = hybrid_tuner_request_state(struct r820t_priv, priv, | |
2291 | hybrid_tuner_instance_list, | |
2292 | i2c, cfg->i2c_addr, | |
2293 | "r820t"); | |
2294 | switch (instance) { | |
2295 | case 0: | |
2296 | /* memory allocation failure */ | |
2297 | goto err_no_gate; | |
2298 | break; | |
2299 | case 1: | |
2300 | /* new tuner instance */ | |
2301 | priv->cfg = cfg; | |
2302 | ||
2303 | mutex_init(&priv->lock); | |
2304 | ||
2305 | fe->tuner_priv = priv; | |
2306 | break; | |
2307 | case 2: | |
2308 | /* existing tuner instance */ | |
2309 | fe->tuner_priv = priv; | |
2310 | break; | |
2311 | } | |
2312 | ||
2313 | memcpy(&fe->ops.tuner_ops, &r820t_tuner_ops, sizeof(r820t_tuner_ops)); | |
2314 | ||
2315 | if (fe->ops.i2c_gate_ctrl) | |
2316 | fe->ops.i2c_gate_ctrl(fe, 1); | |
2317 | ||
2318 | /* check if the tuner is there */ | |
226471a1 | 2319 | rc = r820t_read(priv, 0x00, data, sizeof(data)); |
a80abc58 MCC |
2320 | if (rc < 0) |
2321 | goto err; | |
2322 | ||
2323 | rc = r820t_sleep(fe); | |
2324 | if (rc < 0) | |
2325 | goto err; | |
2326 | ||
2327 | tuner_info("Rafael Micro r820t successfully identified\n"); | |
2328 | ||
2329 | fe->tuner_priv = priv; | |
2330 | memcpy(&fe->ops.tuner_ops, &r820t_tuner_ops, | |
2331 | sizeof(struct dvb_tuner_ops)); | |
2332 | ||
2333 | if (fe->ops.i2c_gate_ctrl) | |
2334 | fe->ops.i2c_gate_ctrl(fe, 0); | |
2335 | ||
2336 | mutex_unlock(&r820t_list_mutex); | |
2337 | ||
2338 | return fe; | |
2339 | err: | |
2340 | if (fe->ops.i2c_gate_ctrl) | |
2341 | fe->ops.i2c_gate_ctrl(fe, 0); | |
2342 | ||
2343 | err_no_gate: | |
2344 | mutex_unlock(&r820t_list_mutex); | |
2345 | ||
2346 | tuner_info("%s: failed=%d\n", __func__, rc); | |
2347 | r820t_release(fe); | |
2348 | return NULL; | |
2349 | } | |
2350 | EXPORT_SYMBOL_GPL(r820t_attach); | |
2351 | ||
2352 | MODULE_DESCRIPTION("Rafael Micro r820t silicon tuner driver"); | |
2353 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); | |
2354 | MODULE_LICENSE("GPL"); |