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Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
[wrt350n-kernel.git] / drivers / media / dvb / frontends / xc5000.c
blobf642ca200b596096c2f85167faeeeef4ec6b091f
1 /*
2 * Driver for Xceive XC5000 "QAM/8VSB single chip tuner"
3 *
4 * Copyright (c) 2007 Xceive Corporation
5 * Copyright (c) 2007 Steven Toth <stoth@hauppauge.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 *
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/videodev2.h>
26 #include <linux/delay.h>
27 #include <linux/dvb/frontend.h>
28 #include <linux/i2c.h>
29
30 #include "dvb_frontend.h"
31
32 #include "xc5000.h"
33 #include "xc5000_priv.h"
34
35 static int debug;
36 module_param(debug, int, 0644);
37 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
38
39 #define dprintk(level,fmt, arg...) if (debug >= level) \
40 printk(KERN_INFO "%s: " fmt, "xc5000", ## arg)
41
42 #define XC5000_DEFAULT_FIRMWARE "dvb-fe-xc5000-1.1.fw"
43 #define XC5000_DEFAULT_FIRMWARE_SIZE 12332
44
45 /* Misc Defines */
46 #define MAX_TV_STANDARD 23
47 #define XC_MAX_I2C_WRITE_LENGTH 64
48
49 /* Signal Types */
50 #define XC_RF_MODE_AIR 0
51 #define XC_RF_MODE_CABLE 1
52
53 /* Result codes */
54 #define XC_RESULT_SUCCESS 0
55 #define XC_RESULT_RESET_FAILURE 1
56 #define XC_RESULT_I2C_WRITE_FAILURE 2
57 #define XC_RESULT_I2C_READ_FAILURE 3
58 #define XC_RESULT_OUT_OF_RANGE 5
59
60 /* Product id */
61 #define XC_PRODUCT_ID_FW_NOT_LOADED 0x2000
62 #define XC_PRODUCT_ID_FW_LOADED 0x1388
63
64 /* Registers */
65 #define XREG_INIT 0x00
66 #define XREG_VIDEO_MODE 0x01
67 #define XREG_AUDIO_MODE 0x02
68 #define XREG_RF_FREQ 0x03
69 #define XREG_D_CODE 0x04
70 #define XREG_IF_OUT 0x05
71 #define XREG_SEEK_MODE 0x07
72 #define XREG_POWER_DOWN 0x0A
73 #define XREG_SIGNALSOURCE 0x0D /* 0=Air, 1=Cable */
74 #define XREG_SMOOTHEDCVBS 0x0E
75 #define XREG_XTALFREQ 0x0F
76 #define XREG_FINERFFREQ 0x10
77 #define XREG_DDIMODE 0x11
78
79 #define XREG_ADC_ENV 0x00
80 #define XREG_QUALITY 0x01
81 #define XREG_FRAME_LINES 0x02
82 #define XREG_HSYNC_FREQ 0x03
83 #define XREG_LOCK 0x04
84 #define XREG_FREQ_ERROR 0x05
85 #define XREG_SNR 0x06
86 #define XREG_VERSION 0x07
87 #define XREG_PRODUCT_ID 0x08
88 #define XREG_BUSY 0x09
89
90 /*
91 Basic firmware description. This will remain with
92 the driver for documentation purposes.
93
94 This represents an I2C firmware file encoded as a
95 string of unsigned char. Format is as follows:
96
97 char[0 ]=len0_MSB -> len = len_MSB * 256 + len_LSB
98 char[1 ]=len0_LSB -> length of first write transaction
99 char[2 ]=data0 -> first byte to be sent
100 char[3 ]=data1
101 char[4 ]=data2
102 char[ ]=...
103 char[M ]=dataN -> last byte to be sent
104 char[M+1]=len1_MSB -> len = len_MSB * 256 + len_LSB
105 char[M+2]=len1_LSB -> length of second write transaction
106 char[M+3]=data0
107 char[M+4]=data1
108 ...
109 etc.
110
111 The [len] value should be interpreted as follows:
112
113 len= len_MSB _ len_LSB
114 len=1111_1111_1111_1111 : End of I2C_SEQUENCE
115 len=0000_0000_0000_0000 : Reset command: Do hardware reset
116 len=0NNN_NNNN_NNNN_NNNN : Normal transaction: number of bytes = {1:32767)
117 len=1WWW_WWWW_WWWW_WWWW : Wait command: wait for {1:32767} ms
118
119 For the RESET and WAIT commands, the two following bytes will contain
120 immediately the length of the following transaction.
121
122 */
123 typedef struct {
124 char *Name;
125 u16 AudioMode;
126 u16 VideoMode;
127 } XC_TV_STANDARD;
128
129 /* Tuner standards */
130 #define MN_NTSC_PAL_BTSC 0
131 #define MN_NTSC_PAL_A2 1
132 #define MN_NTSC_PAL_EIAJ 2
133 #define MN_NTSC_PAL_Mono 3
134 #define BG_PAL_A2 4
135 #define BG_PAL_NICAM 5
136 #define BG_PAL_MONO 6
137 #define I_PAL_NICAM 7
138 #define I_PAL_NICAM_MONO 8
139 #define DK_PAL_A2 9
140 #define DK_PAL_NICAM 10
141 #define DK_PAL_MONO 11
142 #define DK_SECAM_A2DK1 12
143 #define DK_SECAM_A2LDK3 13
144 #define DK_SECAM_A2MONO 14
145 #define L_SECAM_NICAM 15
146 #define LC_SECAM_NICAM 16
147 #define DTV6 17
148 #define DTV8 18
149 #define DTV7_8 19
150 #define DTV7 20
151 #define FM_Radio_INPUT2 21
152 #define FM_Radio_INPUT1 22
153
154 XC_TV_STANDARD XC5000_Standard[MAX_TV_STANDARD] = {
155 {"M/N-NTSC/PAL-BTSC", 0x0400, 0x8020},
156 {"M/N-NTSC/PAL-A2", 0x0600, 0x8020},
157 {"M/N-NTSC/PAL-EIAJ", 0x0440, 0x8020},
158 {"M/N-NTSC/PAL-Mono", 0x0478, 0x8020},
159 {"B/G-PAL-A2", 0x0A00, 0x8049},
160 {"B/G-PAL-NICAM", 0x0C04, 0x8049},
161 {"B/G-PAL-MONO", 0x0878, 0x8059},
162 {"I-PAL-NICAM", 0x1080, 0x8009},
163 {"I-PAL-NICAM-MONO", 0x0E78, 0x8009},
164 {"D/K-PAL-A2", 0x1600, 0x8009},
165 {"D/K-PAL-NICAM", 0x0E80, 0x8009},
166 {"D/K-PAL-MONO", 0x1478, 0x8009},
167 {"D/K-SECAM-A2 DK1", 0x1200, 0x8009},
168 {"D/K-SECAM-A2 L/DK3",0x0E00, 0x8009},
169 {"D/K-SECAM-A2 MONO", 0x1478, 0x8009},
170 {"L-SECAM-NICAM", 0x8E82, 0x0009},
171 {"L'-SECAM-NICAM", 0x8E82, 0x4009},
172 {"DTV6", 0x00C0, 0x8002},
173 {"DTV8", 0x00C0, 0x800B},
174 {"DTV7/8", 0x00C0, 0x801B},
175 {"DTV7", 0x00C0, 0x8007},
176 {"FM Radio-INPUT2", 0x9802, 0x9002},
177 {"FM Radio-INPUT1", 0x0208, 0x9002}
178 };
179
180 static int xc5000_writeregs(struct xc5000_priv *priv, u8 *buf, u8 len);
181 static int xc5000_readregs(struct xc5000_priv *priv, u8 *buf, u8 len);
182 static void xc5000_TunerReset(struct dvb_frontend *fe);
183
184 static int xc_send_i2c_data(struct xc5000_priv *priv, u8 *buf, int len)
185 {
186 return xc5000_writeregs(priv, buf, len)
187 ? XC_RESULT_I2C_WRITE_FAILURE : XC_RESULT_SUCCESS;
188 }
189
190 static int xc_read_i2c_data(struct xc5000_priv *priv, u8 *buf, int len)
191 {
192 return xc5000_readregs(priv, buf, len)
193 ? XC_RESULT_I2C_READ_FAILURE : XC_RESULT_SUCCESS;
194 }
195
196 static int xc_reset(struct dvb_frontend *fe)
197 {
198 xc5000_TunerReset(fe);
199 return XC_RESULT_SUCCESS;
200 }
201
202 static void xc_wait(int wait_ms)
203 {
204 msleep(wait_ms);
205 }
206
207 static void xc5000_TunerReset(struct dvb_frontend *fe)
208 {
209 struct xc5000_priv *priv = fe->tuner_priv;
210 int ret;
211
212 dprintk(1, "%s()\n", __FUNCTION__);
213
214 if (priv->cfg->tuner_callback) {
215 ret = priv->cfg->tuner_callback(priv->cfg->priv,
216 XC5000_TUNER_RESET, 0);
217 if (ret)
218 printk(KERN_ERR "xc5000: reset failed\n");
219 } else
220 printk(KERN_ERR "xc5000: no tuner reset callback function, fatal\n");
221 }
222
223 static int xc_write_reg(struct xc5000_priv *priv, u16 regAddr, u16 i2cData)
224 {
225 u8 buf[4];
226 int WatchDogTimer = 5;
227 int result;
228
229 buf[0] = (regAddr >> 8) & 0xFF;
230 buf[1] = regAddr & 0xFF;
231 buf[2] = (i2cData >> 8) & 0xFF;
232 buf[3] = i2cData & 0xFF;
233 result = xc_send_i2c_data(priv, buf, 4);
234 if (result == XC_RESULT_SUCCESS) {
235 /* wait for busy flag to clear */
236 while ((WatchDogTimer > 0) && (result == XC_RESULT_SUCCESS)) {
237 buf[0] = 0;
238 buf[1] = XREG_BUSY;
239
240 result = xc_send_i2c_data(priv, buf, 2);
241 if (result == XC_RESULT_SUCCESS) {
242 result = xc_read_i2c_data(priv, buf, 2);
243 if (result == XC_RESULT_SUCCESS) {
244 if ((buf[0] == 0) && (buf[1] == 0)) {
245 /* busy flag cleared */
246 break;
247 } else {
248 xc_wait(100); /* wait 5 ms */
249 WatchDogTimer--;
250 }
251 }
252 }
253 }
254 }
255 if (WatchDogTimer < 0)
256 result = XC_RESULT_I2C_WRITE_FAILURE;
257
258 return result;
259 }
260
261 static int xc_read_reg(struct xc5000_priv *priv, u16 regAddr, u16 *i2cData)
262 {
263 u8 buf[2];
264 int result;
265
266 buf[0] = (regAddr >> 8) & 0xFF;
267 buf[1] = regAddr & 0xFF;
268 result = xc_send_i2c_data(priv, buf, 2);
269 if (result != XC_RESULT_SUCCESS)
270 return result;
271
272 result = xc_read_i2c_data(priv, buf, 2);
273 if (result != XC_RESULT_SUCCESS)
274 return result;
275
276 *i2cData = buf[0] * 256 + buf[1];
277 return result;
278 }
279
280 static int xc_load_i2c_sequence(struct dvb_frontend *fe, u8 i2c_sequence[])
281 {
282 struct xc5000_priv *priv = fe->tuner_priv;
283
284 int i, nbytes_to_send, result;
285 unsigned int len, pos, index;
286 u8 buf[XC_MAX_I2C_WRITE_LENGTH];
287
288 index=0;
289 while ((i2c_sequence[index]!=0xFF) || (i2c_sequence[index+1]!=0xFF)) {
290 len = i2c_sequence[index]* 256 + i2c_sequence[index+1];
291 if (len == 0x0000) {
292 /* RESET command */
293 result = xc_reset(fe);
294 index += 2;
295 if (result != XC_RESULT_SUCCESS)
296 return result;
297 } else if (len & 0x8000) {
298 /* WAIT command */
299 xc_wait(len & 0x7FFF);
300 index += 2;
301 } else {
302 /* Send i2c data whilst ensuring individual transactions
303 * do not exceed XC_MAX_I2C_WRITE_LENGTH bytes.
304 */
305 index += 2;
306 buf[0] = i2c_sequence[index];
307 buf[1] = i2c_sequence[index + 1];
308 pos = 2;
309 while (pos < len) {
310 if ((len - pos) > XC_MAX_I2C_WRITE_LENGTH - 2) {
311 nbytes_to_send = XC_MAX_I2C_WRITE_LENGTH;
312 } else {
313 nbytes_to_send = (len - pos + 2);
314 }
315 for (i=2; i<nbytes_to_send; i++) {
316 buf[i] = i2c_sequence[index + pos + i - 2];
317 }
318 result = xc_send_i2c_data(priv, buf, nbytes_to_send);
319
320 if (result != XC_RESULT_SUCCESS)
321 return result;
322
323 pos += nbytes_to_send - 2;
324 }
325 index += len;
326 }
327 }
328 return XC_RESULT_SUCCESS;
329 }
330
331 static int xc_initialize(struct xc5000_priv *priv)
332 {
333 dprintk(1, "%s()\n", __FUNCTION__);
334 return xc_write_reg(priv, XREG_INIT, 0);
335 }
336
337 static int xc_SetTVStandard(struct xc5000_priv *priv,
338 u16 VideoMode, u16 AudioMode)
339 {
340 int ret;
341 dprintk(1, "%s(0x%04x,0x%04x)\n", __FUNCTION__, VideoMode, AudioMode);
342 dprintk(1, "%s() Standard = %s\n",
343 __FUNCTION__,
344 XC5000_Standard[priv->video_standard].Name);
345
346 ret = xc_write_reg(priv, XREG_VIDEO_MODE, VideoMode);
347 if (ret == XC_RESULT_SUCCESS)
348 ret = xc_write_reg(priv, XREG_AUDIO_MODE, AudioMode);
349
350 return ret;
351 }
352
353 static int xc_shutdown(struct xc5000_priv *priv)
354 {
355 return 0;
356 /* Fixme: cannot bring tuner back alive once shutdown
357 * without reloading the driver modules.
358 * return xc_write_reg(priv, XREG_POWER_DOWN, 0);
359 */
360 }
361
362 static int xc_SetSignalSource(struct xc5000_priv *priv, u16 rf_mode)
363 {
364 dprintk(1, "%s(%d) Source = %s\n", __FUNCTION__, rf_mode,
365 rf_mode == XC_RF_MODE_AIR ? "ANTENNA" : "CABLE");
366
367 if ((rf_mode != XC_RF_MODE_AIR) && (rf_mode != XC_RF_MODE_CABLE))
368 {
369 rf_mode = XC_RF_MODE_CABLE;
370 printk(KERN_ERR
371 "%s(), Invalid mode, defaulting to CABLE",
372 __FUNCTION__);
373 }
374 return xc_write_reg(priv, XREG_SIGNALSOURCE, rf_mode);
375 }
376
377 static const struct dvb_tuner_ops xc5000_tuner_ops;
378
379 static int xc_set_RF_frequency(struct xc5000_priv *priv, u32 freq_hz)
380 {
381 u16 freq_code;
382
383 dprintk(1, "%s(%u)\n", __FUNCTION__, freq_hz);
384
385 if ((freq_hz > xc5000_tuner_ops.info.frequency_max) ||
386 (freq_hz < xc5000_tuner_ops.info.frequency_min))
387 return XC_RESULT_OUT_OF_RANGE;
388
389 freq_code = (u16)(freq_hz / 15625);
390
391 return xc_write_reg(priv, XREG_RF_FREQ, freq_code);
392 }
393
394
395 static int xc_set_IF_frequency(struct xc5000_priv *priv, u32 freq_khz)
396 {
397 u32 freq_code = (freq_khz * 1024)/1000;
398 dprintk(1, "%s(freq_khz = %d) freq_code = 0x%x\n",
399 __FUNCTION__, freq_khz, freq_code);
400
401 return xc_write_reg(priv, XREG_IF_OUT, freq_code);
402 }
403
404
405 static int xc_get_ADC_Envelope(struct xc5000_priv *priv, u16 *adc_envelope)
406 {
407 return xc_read_reg(priv, XREG_ADC_ENV, adc_envelope);
408 }
409
410 static int xc_get_frequency_error(struct xc5000_priv *priv, u32 *freq_error_hz)
411 {
412 int result;
413 u16 regData;
414 u32 tmp;
415
416 result = xc_read_reg(priv, XREG_FREQ_ERROR, &regData);
417 if (result)
418 return result;
419
420 tmp = (u32)regData;
421 (*freq_error_hz) = (tmp * 15625) / 1000;
422 return result;
423 }
424
425 static int xc_get_lock_status(struct xc5000_priv *priv, u16 *lock_status)
426 {
427 return xc_read_reg(priv, XREG_LOCK, lock_status);
428 }
429
430 static int xc_get_version(struct xc5000_priv *priv,
431 u8 *hw_majorversion, u8 *hw_minorversion,
432 u8 *fw_majorversion, u8 *fw_minorversion)
433 {
434 u16 data;
435 int result;
436
437 result = xc_read_reg(priv, XREG_VERSION, &data);
438 if (result)
439 return result;
440
441 (*hw_majorversion) = (data >> 12) & 0x0F;
442 (*hw_minorversion) = (data >> 8) & 0x0F;
443 (*fw_majorversion) = (data >> 4) & 0x0F;
444 (*fw_minorversion) = data & 0x0F;
445
446 return 0;
447 }
448
449 static int xc_get_hsync_freq(struct xc5000_priv *priv, u32 *hsync_freq_hz)
450 {
451 u16 regData;
452 int result;
453
454 result = xc_read_reg(priv, XREG_HSYNC_FREQ, &regData);
455 if (result)
456 return result;
457
458 (*hsync_freq_hz) = ((regData & 0x0fff) * 763)/100;
459 return result;
460 }
461
462 static int xc_get_frame_lines(struct xc5000_priv *priv, u16 *frame_lines)
463 {
464 return xc_read_reg(priv, XREG_FRAME_LINES, frame_lines);
465 }
466
467 static int xc_get_quality(struct xc5000_priv *priv, u16 *quality)
468 {
469 return xc_read_reg(priv, XREG_QUALITY, quality);
470 }
471
472 static u16 WaitForLock(struct xc5000_priv *priv)
473 {
474 u16 lockState = 0;
475 int watchDogCount = 40;
476
477 while ((lockState == 0) && (watchDogCount > 0)) {
478 xc_get_lock_status(priv, &lockState);
479 if (lockState != 1) {
480 xc_wait(5);
481 watchDogCount--;
482 }
483 }
484 return lockState;
485 }
486
487 static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz)
488 {
489 int found = 0;
490
491 dprintk(1, "%s(%u)\n", __FUNCTION__, freq_hz);
492
493 if (xc_set_RF_frequency(priv, freq_hz) != XC_RESULT_SUCCESS)
494 return 0;
495
496 if (WaitForLock(priv) == 1)
497 found = 1;
498
499 return found;
500 }
501
502 static int xc5000_readreg(struct xc5000_priv *priv, u16 reg, u16 *val)
503 {
504 u8 buf[2] = { reg >> 8, reg & 0xff };
505 u8 bval[2] = { 0, 0 };
506 struct i2c_msg msg[2] = {
507 { .addr = priv->cfg->i2c_address,
508 .flags = 0, .buf = &buf[0], .len = 2 },
509 { .addr = priv->cfg->i2c_address,
510 .flags = I2C_M_RD, .buf = &bval[0], .len = 2 },
511 };
512
513 if (i2c_transfer(priv->i2c, msg, 2) != 2) {
514 printk(KERN_WARNING "xc5000: I2C read failed\n");
515 return -EREMOTEIO;
516 }
517
518 *val = (bval[0] << 8) | bval[1];
519 return 0;
520 }
521
522 static int xc5000_writeregs(struct xc5000_priv *priv, u8 *buf, u8 len)
523 {
524 struct i2c_msg msg = { .addr = priv->cfg->i2c_address,
525 .flags = 0, .buf = buf, .len = len };
526
527 if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
528 printk(KERN_ERR "xc5000: I2C write failed (len=%i)\n",
529 (int)len);
530 return -EREMOTEIO;
531 }
532 return 0;
533 }
534
535 static int xc5000_readregs(struct xc5000_priv *priv, u8 *buf, u8 len)
536 {
537 struct i2c_msg msg = { .addr = priv->cfg->i2c_address,
538 .flags = I2C_M_RD, .buf = buf, .len = len };
539
540 if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
541 printk(KERN_ERR "xc5000 I2C read failed (len=%i)\n",(int)len);
542 return -EREMOTEIO;
543 }
544 return 0;
545 }
546
547 static int xc5000_fwupload(struct dvb_frontend* fe)
548 {
549 struct xc5000_priv *priv = fe->tuner_priv;
550 const struct firmware *fw;
551 int ret;
552
553 /* request the firmware, this will block and timeout */
554 printk(KERN_INFO "xc5000: waiting for firmware upload (%s)...\n",
555 XC5000_DEFAULT_FIRMWARE);
556
557 ret = request_firmware(&fw, XC5000_DEFAULT_FIRMWARE, &priv->i2c->dev);
558 if (ret) {
559 printk(KERN_ERR "xc5000: Upload failed. (file not found?)\n");
560 ret = XC_RESULT_RESET_FAILURE;
561 goto out;
562 } else {
563 printk(KERN_INFO "xc5000: firmware read %Zu bytes.\n",
564 fw->size);
565 ret = XC_RESULT_SUCCESS;
566 }
567
568 if (fw->size != XC5000_DEFAULT_FIRMWARE_SIZE) {
569 printk(KERN_ERR "xc5000: firmware incorrect size\n");
570 ret = XC_RESULT_RESET_FAILURE;
571 } else {
572 printk(KERN_INFO "xc5000: firmware upload\n");
573 ret = xc_load_i2c_sequence(fe, fw->data );
574 }
575
576 out:
577 release_firmware(fw);
578 return ret;
579 }
580
581 static void xc_debug_dump(struct xc5000_priv *priv)
582 {
583 u16 adc_envelope;
584 u32 freq_error_hz = 0;
585 u16 lock_status;
586 u32 hsync_freq_hz = 0;
587 u16 frame_lines;
588 u16 quality;
589 u8 hw_majorversion = 0, hw_minorversion = 0;
590 u8 fw_majorversion = 0, fw_minorversion = 0;
591
592 /* Wait for stats to stabilize.
593 * Frame Lines needs two frame times after initial lock
594 * before it is valid.
595 */
596 xc_wait(100);
597
598 xc_get_ADC_Envelope(priv, &adc_envelope);
599 dprintk(1, "*** ADC envelope (0-1023) = %d\n", adc_envelope);
600
601 xc_get_frequency_error(priv, &freq_error_hz);
602 dprintk(1, "*** Frequency error = %d Hz\n", freq_error_hz);
603
604 xc_get_lock_status(priv, &lock_status);
605 dprintk(1, "*** Lock status (0-Wait, 1-Locked, 2-No-signal) = %d\n",
606 lock_status);
607
608 xc_get_version(priv, &hw_majorversion, &hw_minorversion,
609 &fw_majorversion, &fw_minorversion);
610 dprintk(1, "*** HW: V%02x.%02x, FW: V%02x.%02x\n",
611 hw_majorversion, hw_minorversion,
612 fw_majorversion, fw_minorversion);
613
614 xc_get_hsync_freq(priv, &hsync_freq_hz);
615 dprintk(1, "*** Horizontal sync frequency = %d Hz\n", hsync_freq_hz);
616
617 xc_get_frame_lines(priv, &frame_lines);
618 dprintk(1, "*** Frame lines = %d\n", frame_lines);
619
620 xc_get_quality(priv, &quality);
621 dprintk(1, "*** Quality (0:<8dB, 7:>56dB) = %d\n", quality);
622 }
623
624 static int xc5000_set_params(struct dvb_frontend *fe,
625 struct dvb_frontend_parameters *params)
626 {
627 struct xc5000_priv *priv = fe->tuner_priv;
628 int ret;
629
630 dprintk(1, "%s() frequency=%d (Hz)\n", __FUNCTION__, params->frequency);
631
632 switch(params->u.vsb.modulation) {
633 case VSB_8:
634 case VSB_16:
635 dprintk(1, "%s() VSB modulation\n", __FUNCTION__);
636 priv->rf_mode = XC_RF_MODE_AIR;
637 priv->freq_hz = params->frequency - 1750000;
638 priv->bandwidth = BANDWIDTH_6_MHZ;
639 priv->video_standard = DTV6;
640 break;
641 case QAM_64:
642 case QAM_256:
643 case QAM_AUTO:
644 dprintk(1, "%s() QAM modulation\n", __FUNCTION__);
645 priv->rf_mode = XC_RF_MODE_CABLE;
646 priv->freq_hz = params->frequency - 1750000;
647 priv->bandwidth = BANDWIDTH_6_MHZ;
648 priv->video_standard = DTV6;
649 break;
650 default:
651 return -EINVAL;
652 }
653
654 dprintk(1, "%s() frequency=%d (compensated)\n",
655 __FUNCTION__, priv->freq_hz);
656
657 ret = xc_SetSignalSource(priv, priv->rf_mode);
658 if (ret != XC_RESULT_SUCCESS) {
659 printk(KERN_ERR
660 "xc5000: xc_SetSignalSource(%d) failed\n",
661 priv->rf_mode);
662 return -EREMOTEIO;
663 }
664
665 ret = xc_SetTVStandard(priv,
666 XC5000_Standard[priv->video_standard].VideoMode,
667 XC5000_Standard[priv->video_standard].AudioMode);
668 if (ret != XC_RESULT_SUCCESS) {
669 printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
670 return -EREMOTEIO;
671 }
672
673 ret = xc_set_IF_frequency(priv, priv->cfg->if_khz);
674 if (ret != XC_RESULT_SUCCESS) {
675 printk(KERN_ERR "xc5000: xc_Set_IF_frequency(%d) failed\n",
676 priv->cfg->if_khz);
677 return -EIO;
678 }
679
680 xc_tune_channel(priv, priv->freq_hz);
681
682 if (debug)
683 xc_debug_dump(priv);
684
685 return 0;
686 }
687
688 static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe);
689
690 static int xc5000_set_analog_params(struct dvb_frontend *fe,
691 struct analog_parameters *params)
692 {
693 struct xc5000_priv *priv = fe->tuner_priv;
694 int ret;
695
696 if(priv->fwloaded == 0)
697 xc_load_fw_and_init_tuner(fe);
698
699 dprintk(1, "%s() frequency=%d (in units of 62.5khz)\n",
700 __FUNCTION__, params->frequency);
701
702 priv->rf_mode = XC_RF_MODE_CABLE; /* Fix me: it could be air. */
703
704 /* params->frequency is in units of 62.5khz */
705 priv->freq_hz = params->frequency * 62500;
706
707 /* FIX ME: Some video standards may have several possible audio
708 standards. We simply default to one of them here.
709 */
710 if(params->std & V4L2_STD_MN) {
711 /* default to BTSC audio standard */
712 priv->video_standard = MN_NTSC_PAL_BTSC;
713 goto tune_channel;
714 }
715
716 if(params->std & V4L2_STD_PAL_BG) {
717 /* default to NICAM audio standard */
718 priv->video_standard = BG_PAL_NICAM;
719 goto tune_channel;
720 }
721
722 if(params->std & V4L2_STD_PAL_I) {
723 /* default to NICAM audio standard */
724 priv->video_standard = I_PAL_NICAM;
725 goto tune_channel;
726 }
727
728 if(params->std & V4L2_STD_PAL_DK) {
729 /* default to NICAM audio standard */
730 priv->video_standard = DK_PAL_NICAM;
731 goto tune_channel;
732 }
733
734 if(params->std & V4L2_STD_SECAM_DK) {
735 /* default to A2 DK1 audio standard */
736 priv->video_standard = DK_SECAM_A2DK1;
737 goto tune_channel;
738 }
739
740 if(params->std & V4L2_STD_SECAM_L) {
741 priv->video_standard = L_SECAM_NICAM;
742 goto tune_channel;
743 }
744
745 if(params->std & V4L2_STD_SECAM_LC) {
746 priv->video_standard = LC_SECAM_NICAM;
747 goto tune_channel;
748 }
749
750 tune_channel:
751 ret = xc_SetSignalSource(priv, priv->rf_mode);
752 if (ret != XC_RESULT_SUCCESS) {
753 printk(KERN_ERR
754 "xc5000: xc_SetSignalSource(%d) failed\n",
755 priv->rf_mode);
756 return -EREMOTEIO;
757 }
758
759 ret = xc_SetTVStandard(priv,
760 XC5000_Standard[priv->video_standard].VideoMode,
761 XC5000_Standard[priv->video_standard].AudioMode);
762 if (ret != XC_RESULT_SUCCESS) {
763 printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
764 return -EREMOTEIO;
765 }
766
767 xc_tune_channel(priv, priv->freq_hz);
768
769 if (debug)
770 xc_debug_dump(priv);
771
772 return 0;
773 }
774
775 static int xc5000_get_frequency(struct dvb_frontend *fe, u32 *freq)
776 {
777 struct xc5000_priv *priv = fe->tuner_priv;
778 dprintk(1, "%s()\n", __FUNCTION__);
779 *freq = priv->freq_hz;
780 return 0;
781 }
782
783 static int xc5000_get_bandwidth(struct dvb_frontend *fe, u32 *bw)
784 {
785 struct xc5000_priv *priv = fe->tuner_priv;
786 dprintk(1, "%s()\n", __FUNCTION__);
787
788 *bw = priv->bandwidth;
789 return 0;
790 }
791
792 static int xc5000_get_status(struct dvb_frontend *fe, u32 *status)
793 {
794 struct xc5000_priv *priv = fe->tuner_priv;
795 u16 lock_status = 0;
796
797 xc_get_lock_status(priv, &lock_status);
798
799 dprintk(1, "%s() lock_status = 0x%08x\n", __FUNCTION__, lock_status);
800
801 *status = lock_status;
802
803 return 0;
804 }
805
806 static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe)
807 {
808 struct xc5000_priv *priv = fe->tuner_priv;
809 int ret = 0;
810
811 if (priv->fwloaded == 0) {
812 ret = xc5000_fwupload(fe);
813 if (ret != XC_RESULT_SUCCESS)
814 return ret;
815 priv->fwloaded = 1;
816 }
817
818 /* Start the tuner self-calibration process */
819 ret |= xc_initialize(priv);
820
821 /* Wait for calibration to complete.
822 * We could continue but XC5000 will clock stretch subsequent
823 * I2C transactions until calibration is complete. This way we
824 * don't have to rely on clock stretching working.
825 */
826 xc_wait( 100 );
827
828 /* Default to "CABLE" mode */
829 ret |= xc_write_reg(priv, XREG_SIGNALSOURCE, XC_RF_MODE_CABLE);
830
831 return ret;
832 }
833
834 static int xc5000_sleep(struct dvb_frontend *fe)
835 {
836 struct xc5000_priv *priv = fe->tuner_priv;
837 int ret;
838
839 dprintk(1, "%s()\n", __FUNCTION__);
840
841 /* On Pinnacle PCTV HD 800i, the tuner cannot be reinitialized
842 * once shutdown without reloading the driver. Maybe I am not
843 * doing something right.
844 *
845 */
846
847 ret = xc_shutdown(priv);
848 if(ret != XC_RESULT_SUCCESS) {
849 printk(KERN_ERR
850 "xc5000: %s() unable to shutdown tuner\n",
851 __FUNCTION__);
852 return -EREMOTEIO;
853 }
854 else {
855 /* priv->fwloaded = 0; */
856 return XC_RESULT_SUCCESS;
857 }
858 }
859
860 static int xc5000_init(struct dvb_frontend *fe)
861 {
862 struct xc5000_priv *priv = fe->tuner_priv;
863 dprintk(1, "%s()\n", __FUNCTION__);
864
865 if (xc_load_fw_and_init_tuner(fe) != XC_RESULT_SUCCESS) {
866 printk(KERN_ERR "xc5000: Unable to initialise tuner\n");
867 return -EREMOTEIO;
868 }
869
870 if (debug)
871 xc_debug_dump(priv);
872
873 return 0;
874 }
875
876 static int xc5000_release(struct dvb_frontend *fe)
877 {
878 dprintk(1, "%s()\n", __FUNCTION__);
879 kfree(fe->tuner_priv);
880 fe->tuner_priv = NULL;
881 return 0;
882 }
883
884 static const struct dvb_tuner_ops xc5000_tuner_ops = {
885 .info = {
886 .name = "Xceive XC5000",
887 .frequency_min = 1000000,
888 .frequency_max = 1023000000,
889 .frequency_step = 50000,
890 },
891
892 .release = xc5000_release,
893 .init = xc5000_init,
894 .sleep = xc5000_sleep,
895
896 .set_params = xc5000_set_params,
897 .set_analog_params = xc5000_set_analog_params,
898 .get_frequency = xc5000_get_frequency,
899 .get_bandwidth = xc5000_get_bandwidth,
900 .get_status = xc5000_get_status
901 };
902
903 struct dvb_frontend * xc5000_attach(struct dvb_frontend *fe,
904 struct i2c_adapter *i2c,
905 struct xc5000_config *cfg)
906 {
907 struct xc5000_priv *priv = NULL;
908 u16 id = 0;
909
910 dprintk(1, "%s()\n", __FUNCTION__);
911
912 priv = kzalloc(sizeof(struct xc5000_priv), GFP_KERNEL);
913 if (priv == NULL)
914 return NULL;
915
916 priv->cfg = cfg;
917 priv->bandwidth = BANDWIDTH_6_MHZ;
918 priv->i2c = i2c;
919
920 /* Check if firmware has been loaded. It is possible that another
921 instance of the driver has loaded the firmware.
922 */
923 if (xc5000_readreg(priv, XREG_PRODUCT_ID, &id) != 0) {
924 kfree(priv);
925 return NULL;
926 }
927
928 switch(id) {
929 case XC_PRODUCT_ID_FW_LOADED:
930 printk(KERN_INFO
931 "xc5000: Successfully identified at address 0x%02x\n",
932 cfg->i2c_address);
933 printk(KERN_INFO
934 "xc5000: Firmware has been loaded previously\n");
935 priv->fwloaded = 1;
936 break;
937 case XC_PRODUCT_ID_FW_NOT_LOADED:
938 printk(KERN_INFO
939 "xc5000: Successfully identified at address 0x%02x\n",
940 cfg->i2c_address);
941 printk(KERN_INFO
942 "xc5000: Firmware has not been loaded previously\n");
943 priv->fwloaded = 0;
944 break;
945 default:
946 printk(KERN_ERR
947 "xc5000: Device not found at addr 0x%02x (0x%x)\n",
948 cfg->i2c_address, id);
949 kfree(priv);
950 return NULL;
951 }
952
953 memcpy(&fe->ops.tuner_ops, &xc5000_tuner_ops,
954 sizeof(struct dvb_tuner_ops));
955
956 fe->tuner_priv = priv;
957
958 return fe;
959 }
960 EXPORT_SYMBOL(xc5000_attach);
961
962 MODULE_AUTHOR("Steven Toth");
963 MODULE_DESCRIPTION("Xceive xc5000 silicon tuner driver");
964 MODULE_LICENSE("GPL");
WRT350N Kernel Patches