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path: root/drivers/media/video/cx25821/cx25821-medusa-video.c
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Diffstat (limited to 'drivers/media/video/cx25821/cx25821-medusa-video.c')
-rw-r--r--drivers/media/video/cx25821/cx25821-medusa-video.c872
1 files changed, 872 insertions, 0 deletions
diff --git a/drivers/media/video/cx25821/cx25821-medusa-video.c b/drivers/media/video/cx25821/cx25821-medusa-video.c
new file mode 100644
index 000000000000..fc780d0908dc
--- /dev/null
+++ b/drivers/media/video/cx25821/cx25821-medusa-video.c
@@ -0,0 +1,872 @@
1/*
2 * Driver for the Conexant CX25821 PCIe bridge
3 *
4 * Copyright (C) 2009 Conexant Systems Inc.
5 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25#include "cx25821.h"
26#include "cx25821-medusa-video.h"
27#include "cx25821-biffuncs.h"
28
29/*
30 * medusa_enable_bluefield_output()
31 *
32 * Enable the generation of blue filed output if no video
33 *
34 */
35static void medusa_enable_bluefield_output(struct cx25821_dev *dev, int channel,
36 int enable)
37{
38 int ret_val = 1;
39 u32 value = 0;
40 u32 tmp = 0;
41 int out_ctrl = OUT_CTRL1;
42 int out_ctrl_ns = OUT_CTRL_NS;
43
44 switch (channel) {
45 default:
46 case VDEC_A:
47 break;
48 case VDEC_B:
49 out_ctrl = VDEC_B_OUT_CTRL1;
50 out_ctrl_ns = VDEC_B_OUT_CTRL_NS;
51 break;
52 case VDEC_C:
53 out_ctrl = VDEC_C_OUT_CTRL1;
54 out_ctrl_ns = VDEC_C_OUT_CTRL_NS;
55 break;
56 case VDEC_D:
57 out_ctrl = VDEC_D_OUT_CTRL1;
58 out_ctrl_ns = VDEC_D_OUT_CTRL_NS;
59 break;
60 case VDEC_E:
61 out_ctrl = VDEC_E_OUT_CTRL1;
62 out_ctrl_ns = VDEC_E_OUT_CTRL_NS;
63 return;
64 case VDEC_F:
65 out_ctrl = VDEC_F_OUT_CTRL1;
66 out_ctrl_ns = VDEC_F_OUT_CTRL_NS;
67 return;
68 case VDEC_G:
69 out_ctrl = VDEC_G_OUT_CTRL1;
70 out_ctrl_ns = VDEC_G_OUT_CTRL_NS;
71 return;
72 case VDEC_H:
73 out_ctrl = VDEC_H_OUT_CTRL1;
74 out_ctrl_ns = VDEC_H_OUT_CTRL_NS;
75 return;
76 }
77
78 value = cx25821_i2c_read(&dev->i2c_bus[0], out_ctrl, &tmp);
79 value &= 0xFFFFFF7F; /* clear BLUE_FIELD_EN */
80 if (enable)
81 value |= 0x00000080; /* set BLUE_FIELD_EN */
82 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], out_ctrl, value);
83
84 value = cx25821_i2c_read(&dev->i2c_bus[0], out_ctrl_ns, &tmp);
85 value &= 0xFFFFFF7F;
86 if (enable)
87 value |= 0x00000080; /* set BLUE_FIELD_EN */
88 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], out_ctrl_ns, value);
89}
90
91static int medusa_initialize_ntsc(struct cx25821_dev *dev)
92{
93 int ret_val = 0;
94 int i = 0;
95 u32 value = 0;
96 u32 tmp = 0;
97
98 mutex_lock(&dev->lock);
99
100 for (i = 0; i < MAX_DECODERS; i++) {
101 /* set video format NTSC-M */
102 value =
103 cx25821_i2c_read(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
104 &tmp);
105 value &= 0xFFFFFFF0;
106 /* enable the fast locking mode bit[16] */
107 value |= 0x10001;
108 ret_val =
109 cx25821_i2c_write(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
110 value);
111
112 /* resolution NTSC 720x480 */
113 value =
114 cx25821_i2c_read(&dev->i2c_bus[0],
115 HORIZ_TIM_CTRL + (0x200 * i), &tmp);
116 value &= 0x00C00C00;
117 value |= 0x612D0074;
118 ret_val =
119 cx25821_i2c_write(&dev->i2c_bus[0],
120 HORIZ_TIM_CTRL + (0x200 * i), value);
121
122 value =
123 cx25821_i2c_read(&dev->i2c_bus[0],
124 VERT_TIM_CTRL + (0x200 * i), &tmp);
125 value &= 0x00C00C00;
126 value |= 0x1C1E001A; /* vblank_cnt + 2 to get camera ID */
127 ret_val =
128 cx25821_i2c_write(&dev->i2c_bus[0],
129 VERT_TIM_CTRL + (0x200 * i), value);
130
131 /* chroma subcarrier step size */
132 ret_val =
133 cx25821_i2c_write(&dev->i2c_bus[0],
134 SC_STEP_SIZE + (0x200 * i), 0x43E00000);
135
136 /* enable VIP optional active */
137 value =
138 cx25821_i2c_read(&dev->i2c_bus[0],
139 OUT_CTRL_NS + (0x200 * i), &tmp);
140 value &= 0xFFFBFFFF;
141 value |= 0x00040000;
142 ret_val =
143 cx25821_i2c_write(&dev->i2c_bus[0],
144 OUT_CTRL_NS + (0x200 * i), value);
145
146 /* enable VIP optional active (VIP_OPT_AL) for direct output. */
147 value =
148 cx25821_i2c_read(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
149 &tmp);
150 value &= 0xFFFBFFFF;
151 value |= 0x00040000;
152 ret_val =
153 cx25821_i2c_write(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
154 value);
155
156 /*
157 * clear VPRES_VERT_EN bit, fixes the chroma run away problem
158 * when the input switching rate < 16 fields
159 */
160 value =
161 cx25821_i2c_read(&dev->i2c_bus[0],
162 MISC_TIM_CTRL + (0x200 * i), &tmp);
163 /* disable special play detection */
164 value = setBitAtPos(value, 14);
165 value = clearBitAtPos(value, 15);
166 ret_val =
167 cx25821_i2c_write(&dev->i2c_bus[0],
168 MISC_TIM_CTRL + (0x200 * i), value);
169
170 /* set vbi_gate_en to 0 */
171 value =
172 cx25821_i2c_read(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
173 &tmp);
174 value = clearBitAtPos(value, 29);
175 ret_val =
176 cx25821_i2c_write(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
177 value);
178
179 /* Enable the generation of blue field output if no video */
180 medusa_enable_bluefield_output(dev, i, 1);
181 }
182
183 for (i = 0; i < MAX_ENCODERS; i++) {
184 /* NTSC hclock */
185 value =
186 cx25821_i2c_read(&dev->i2c_bus[0],
187 DENC_A_REG_1 + (0x100 * i), &tmp);
188 value &= 0xF000FC00;
189 value |= 0x06B402D0;
190 ret_val =
191 cx25821_i2c_write(&dev->i2c_bus[0],
192 DENC_A_REG_1 + (0x100 * i), value);
193
194 /* burst begin and burst end */
195 value =
196 cx25821_i2c_read(&dev->i2c_bus[0],
197 DENC_A_REG_2 + (0x100 * i), &tmp);
198 value &= 0xFF000000;
199 value |= 0x007E9054;
200 ret_val =
201 cx25821_i2c_write(&dev->i2c_bus[0],
202 DENC_A_REG_2 + (0x100 * i), value);
203
204 value =
205 cx25821_i2c_read(&dev->i2c_bus[0],
206 DENC_A_REG_3 + (0x100 * i), &tmp);
207 value &= 0xFC00FE00;
208 value |= 0x00EC00F0;
209 ret_val =
210 cx25821_i2c_write(&dev->i2c_bus[0],
211 DENC_A_REG_3 + (0x100 * i), value);
212
213 /* set NTSC vblank, no phase alternation, 7.5 IRE pedestal */
214 value =
215 cx25821_i2c_read(&dev->i2c_bus[0],
216 DENC_A_REG_4 + (0x100 * i), &tmp);
217 value &= 0x00FCFFFF;
218 value |= 0x13020000;
219 ret_val =
220 cx25821_i2c_write(&dev->i2c_bus[0],
221 DENC_A_REG_4 + (0x100 * i), value);
222
223 value =
224 cx25821_i2c_read(&dev->i2c_bus[0],
225 DENC_A_REG_5 + (0x100 * i), &tmp);
226 value &= 0xFFFF0000;
227 value |= 0x0000E575;
228 ret_val =
229 cx25821_i2c_write(&dev->i2c_bus[0],
230 DENC_A_REG_5 + (0x100 * i), value);
231
232 ret_val =
233 cx25821_i2c_write(&dev->i2c_bus[0],
234 DENC_A_REG_6 + (0x100 * i), 0x009A89C1);
235
236 /* Subcarrier Increment */
237 ret_val =
238 cx25821_i2c_write(&dev->i2c_bus[0],
239 DENC_A_REG_7 + (0x100 * i), 0x21F07C1F);
240 }
241
242 /* set picture resolutions */
243 /* 0 - 720 */
244 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], HSCALE_CTRL, 0x0);
245 /* 0 - 480 */
246 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], VSCALE_CTRL, 0x0);
247
248 /* set Bypass input format to NTSC 525 lines */
249 value = cx25821_i2c_read(&dev->i2c_bus[0], BYP_AB_CTRL, &tmp);
250 value |= 0x00080200;
251 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
252
253 mutex_unlock(&dev->lock);
254
255 return ret_val;
256}
257
258static int medusa_PALCombInit(struct cx25821_dev *dev, int dec)
259{
260 int ret_val = -1;
261 u32 value = 0, tmp = 0;
262
263 /* Setup for 2D threshold */
264 ret_val =
265 cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_HFS_CFG + (0x200 * dec),
266 0x20002861);
267 ret_val =
268 cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_HFD_CFG + (0x200 * dec),
269 0x20002861);
270 ret_val =
271 cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_LF_CFG + (0x200 * dec),
272 0x200A1023);
273
274 /* Setup flat chroma and luma thresholds */
275 value =
276 cx25821_i2c_read(&dev->i2c_bus[0],
277 COMB_FLAT_THRESH_CTRL + (0x200 * dec), &tmp);
278 value &= 0x06230000;
279 ret_val =
280 cx25821_i2c_write(&dev->i2c_bus[0],
281 COMB_FLAT_THRESH_CTRL + (0x200 * dec), value);
282
283 /* set comb 2D blend */
284 ret_val =
285 cx25821_i2c_write(&dev->i2c_bus[0], COMB_2D_BLEND + (0x200 * dec),
286 0x210F0F0F);
287
288 /* COMB MISC CONTROL */
289 ret_val =
290 cx25821_i2c_write(&dev->i2c_bus[0], COMB_MISC_CTRL + (0x200 * dec),
291 0x41120A7F);
292
293 return ret_val;
294}
295
296static int medusa_initialize_pal(struct cx25821_dev *dev)
297{
298 int ret_val = 0;
299 int i = 0;
300 u32 value = 0;
301 u32 tmp = 0;
302
303 mutex_lock(&dev->lock);
304
305 for (i = 0; i < MAX_DECODERS; i++) {
306 /* set video format PAL-BDGHI */
307 value =
308 cx25821_i2c_read(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
309 &tmp);
310 value &= 0xFFFFFFF0;
311 /* enable the fast locking mode bit[16] */
312 value |= 0x10004;
313 ret_val =
314 cx25821_i2c_write(&dev->i2c_bus[0], MODE_CTRL + (0x200 * i),
315 value);
316
317 /* resolution PAL 720x576 */
318 value =
319 cx25821_i2c_read(&dev->i2c_bus[0],
320 HORIZ_TIM_CTRL + (0x200 * i), &tmp);
321 value &= 0x00C00C00;
322 value |= 0x632D007D;
323 ret_val =
324 cx25821_i2c_write(&dev->i2c_bus[0],
325 HORIZ_TIM_CTRL + (0x200 * i), value);
326
327 /* vblank656_cnt=x26, vactive_cnt=240h, vblank_cnt=x24 */
328 value =
329 cx25821_i2c_read(&dev->i2c_bus[0],
330 VERT_TIM_CTRL + (0x200 * i), &tmp);
331 value &= 0x00C00C00;
332 value |= 0x28240026; /* vblank_cnt + 2 to get camera ID */
333 ret_val =
334 cx25821_i2c_write(&dev->i2c_bus[0],
335 VERT_TIM_CTRL + (0x200 * i), value);
336
337 /* chroma subcarrier step size */
338 ret_val =
339 cx25821_i2c_write(&dev->i2c_bus[0],
340 SC_STEP_SIZE + (0x200 * i), 0x5411E2D0);
341
342 /* enable VIP optional active */
343 value =
344 cx25821_i2c_read(&dev->i2c_bus[0],
345 OUT_CTRL_NS + (0x200 * i), &tmp);
346 value &= 0xFFFBFFFF;
347 value |= 0x00040000;
348 ret_val =
349 cx25821_i2c_write(&dev->i2c_bus[0],
350 OUT_CTRL_NS + (0x200 * i), value);
351
352 /* enable VIP optional active (VIP_OPT_AL) for direct output. */
353 value =
354 cx25821_i2c_read(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
355 &tmp);
356 value &= 0xFFFBFFFF;
357 value |= 0x00040000;
358 ret_val =
359 cx25821_i2c_write(&dev->i2c_bus[0], OUT_CTRL1 + (0x200 * i),
360 value);
361
362 /*
363 * clear VPRES_VERT_EN bit, fixes the chroma run away problem
364 * when the input switching rate < 16 fields
365 */
366 value =
367 cx25821_i2c_read(&dev->i2c_bus[0],
368 MISC_TIM_CTRL + (0x200 * i), &tmp);
369 /* disable special play detection */
370 value = setBitAtPos(value, 14);
371 value = clearBitAtPos(value, 15);
372 ret_val =
373 cx25821_i2c_write(&dev->i2c_bus[0],
374 MISC_TIM_CTRL + (0x200 * i), value);
375
376 /* set vbi_gate_en to 0 */
377 value =
378 cx25821_i2c_read(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
379 &tmp);
380 value = clearBitAtPos(value, 29);
381 ret_val =
382 cx25821_i2c_write(&dev->i2c_bus[0], DFE_CTRL1 + (0x200 * i),
383 value);
384
385 medusa_PALCombInit(dev, i);
386
387 /* Enable the generation of blue field output if no video */
388 medusa_enable_bluefield_output(dev, i, 1);
389 }
390
391 for (i = 0; i < MAX_ENCODERS; i++) {
392 /* PAL hclock */
393 value =
394 cx25821_i2c_read(&dev->i2c_bus[0],
395 DENC_A_REG_1 + (0x100 * i), &tmp);
396 value &= 0xF000FC00;
397 value |= 0x06C002D0;
398 ret_val =
399 cx25821_i2c_write(&dev->i2c_bus[0],
400 DENC_A_REG_1 + (0x100 * i), value);
401
402 /* burst begin and burst end */
403 value =
404 cx25821_i2c_read(&dev->i2c_bus[0],
405 DENC_A_REG_2 + (0x100 * i), &tmp);
406 value &= 0xFF000000;
407 value |= 0x007E9754;
408 ret_val =
409 cx25821_i2c_write(&dev->i2c_bus[0],
410 DENC_A_REG_2 + (0x100 * i), value);
411
412 /* hblank and vactive */
413 value =
414 cx25821_i2c_read(&dev->i2c_bus[0],
415 DENC_A_REG_3 + (0x100 * i), &tmp);
416 value &= 0xFC00FE00;
417 value |= 0x00FC0120;
418 ret_val =
419 cx25821_i2c_write(&dev->i2c_bus[0],
420 DENC_A_REG_3 + (0x100 * i), value);
421
422 /* set PAL vblank, phase alternation, 0 IRE pedestal */
423 value =
424 cx25821_i2c_read(&dev->i2c_bus[0],
425 DENC_A_REG_4 + (0x100 * i), &tmp);
426 value &= 0x00FCFFFF;
427 value |= 0x14010000;
428 ret_val =
429 cx25821_i2c_write(&dev->i2c_bus[0],
430 DENC_A_REG_4 + (0x100 * i), value);
431
432 value =
433 cx25821_i2c_read(&dev->i2c_bus[0],
434 DENC_A_REG_5 + (0x100 * i), &tmp);
435 value &= 0xFFFF0000;
436 value |= 0x0000F078;
437 ret_val =
438 cx25821_i2c_write(&dev->i2c_bus[0],
439 DENC_A_REG_5 + (0x100 * i), value);
440
441 ret_val =
442 cx25821_i2c_write(&dev->i2c_bus[0],
443 DENC_A_REG_6 + (0x100 * i), 0x00A493CF);
444
445 /* Subcarrier Increment */
446 ret_val =
447 cx25821_i2c_write(&dev->i2c_bus[0],
448 DENC_A_REG_7 + (0x100 * i), 0x2A098ACB);
449 }
450
451 /* set picture resolutions */
452 /* 0 - 720 */
453 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], HSCALE_CTRL, 0x0);
454 /* 0 - 576 */
455 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], VSCALE_CTRL, 0x0);
456
457 /* set Bypass input format to PAL 625 lines */
458 value = cx25821_i2c_read(&dev->i2c_bus[0], BYP_AB_CTRL, &tmp);
459 value &= 0xFFF7FDFF;
460 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
461
462 mutex_unlock(&dev->lock);
463
464 return ret_val;
465}
466
467int medusa_set_videostandard(struct cx25821_dev *dev)
468{
469 int status = STATUS_SUCCESS;
470 u32 value = 0, tmp = 0;
471
472 if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
473 status = medusa_initialize_pal(dev);
474 else
475 status = medusa_initialize_ntsc(dev);
476
477 /* Enable DENC_A output */
478 value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_A_REG_4, &tmp);
479 value = setBitAtPos(value, 4);
480 status = cx25821_i2c_write(&dev->i2c_bus[0], DENC_A_REG_4, value);
481
482 /* Enable DENC_B output */
483 value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_B_REG_4, &tmp);
484 value = setBitAtPos(value, 4);
485 status = cx25821_i2c_write(&dev->i2c_bus[0], DENC_B_REG_4, value);
486
487 return status;
488}
489
490void medusa_set_resolution(struct cx25821_dev *dev, int width,
491 int decoder_select)
492{
493 int decoder = 0;
494 int decoder_count = 0;
495 int ret_val = 0;
496 u32 hscale = 0x0;
497 u32 vscale = 0x0;
498 const int MAX_WIDTH = 720;
499
500 mutex_lock(&dev->lock);
501
502 /* validate the width - cannot be negative */
503 if (width > MAX_WIDTH) {
504 pr_info("%s(): width %d > MAX_WIDTH %d ! resetting to MAX_WIDTH\n",
505 __func__, width, MAX_WIDTH);
506 width = MAX_WIDTH;
507 }
508
509 if (decoder_select <= 7 && decoder_select >= 0) {
510 decoder = decoder_select;
511 decoder_count = decoder_select + 1;
512 } else {
513 decoder = 0;
514 decoder_count = _num_decoders;
515 }
516
517 switch (width) {
518 case 320:
519 hscale = 0x13E34B;
520 vscale = 0x0;
521 break;
522
523 case 352:
524 hscale = 0x10A273;
525 vscale = 0x0;
526 break;
527
528 case 176:
529 hscale = 0x3115B2;
530 vscale = 0x1E00;
531 break;
532
533 case 160:
534 hscale = 0x378D84;
535 vscale = 0x1E00;
536 break;
537
538 default: /* 720 */
539 hscale = 0x0;
540 vscale = 0x0;
541 break;
542 }
543
544 for (; decoder < decoder_count; decoder++) {
545 /* write scaling values for each decoder */
546 ret_val =
547 cx25821_i2c_write(&dev->i2c_bus[0],
548 HSCALE_CTRL + (0x200 * decoder), hscale);
549 ret_val =
550 cx25821_i2c_write(&dev->i2c_bus[0],
551 VSCALE_CTRL + (0x200 * decoder), vscale);
552 }
553
554 mutex_unlock(&dev->lock);
555}
556
557static void medusa_set_decoderduration(struct cx25821_dev *dev, int decoder,
558 int duration)
559{
560 int ret_val = 0;
561 u32 fld_cnt = 0;
562 u32 tmp = 0;
563 u32 disp_cnt_reg = DISP_AB_CNT;
564
565 mutex_lock(&dev->lock);
566
567 /* no support */
568 if (decoder < VDEC_A && decoder > VDEC_H) {
569 mutex_unlock(&dev->lock);
570 return;
571 }
572
573 switch (decoder) {
574 default:
575 break;
576 case VDEC_C:
577 case VDEC_D:
578 disp_cnt_reg = DISP_CD_CNT;
579 break;
580 case VDEC_E:
581 case VDEC_F:
582 disp_cnt_reg = DISP_EF_CNT;
583 break;
584 case VDEC_G:
585 case VDEC_H:
586 disp_cnt_reg = DISP_GH_CNT;
587 break;
588 }
589
590 _display_field_cnt[decoder] = duration;
591
592 /* update hardware */
593 fld_cnt = cx25821_i2c_read(&dev->i2c_bus[0], disp_cnt_reg, &tmp);
594
595 if (!(decoder % 2)) { /* EVEN decoder */
596 fld_cnt &= 0xFFFF0000;
597 fld_cnt |= duration;
598 } else {
599 fld_cnt &= 0x0000FFFF;
600 fld_cnt |= ((u32) duration) << 16;
601 }
602
603 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], disp_cnt_reg, fld_cnt);
604
605 mutex_unlock(&dev->lock);
606}
607
608/* Map to Medusa register setting */
609static int mapM(int srcMin,
610 int srcMax, int srcVal, int dstMin, int dstMax, int *dstVal)
611{
612 int numerator;
613 int denominator;
614 int quotient;
615
616 if ((srcMin == srcMax) || (srcVal < srcMin) || (srcVal > srcMax))
617 return -1;
618 /*
619 * This is the overall expression used:
620 * *dstVal =
621 * (srcVal - srcMin)*(dstMax - dstMin) / (srcMax - srcMin) + dstMin;
622 * but we need to account for rounding so below we use the modulus
623 * operator to find the remainder and increment if necessary.
624 */
625 numerator = (srcVal - srcMin) * (dstMax - dstMin);
626 denominator = srcMax - srcMin;
627 quotient = numerator / denominator;
628
629 if (2 * (numerator % denominator) >= denominator)
630 quotient++;
631
632 *dstVal = quotient + dstMin;
633
634 return 0;
635}
636
637static unsigned long convert_to_twos(long numeric, unsigned long bits_len)
638{
639 unsigned char temp;
640
641 if (numeric >= 0)
642 return numeric;
643 else {
644 temp = ~(abs(numeric) & 0xFF);
645 temp += 1;
646 return temp;
647 }
648}
649
650int medusa_set_brightness(struct cx25821_dev *dev, int brightness, int decoder)
651{
652 int ret_val = 0;
653 int value = 0;
654 u32 val = 0, tmp = 0;
655
656 mutex_lock(&dev->lock);
657 if ((brightness > VIDEO_PROCAMP_MAX)
658 || (brightness < VIDEO_PROCAMP_MIN)) {
659 mutex_unlock(&dev->lock);
660 return -1;
661 }
662 ret_val =
663 mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, brightness,
664 SIGNED_BYTE_MIN, SIGNED_BYTE_MAX, &value);
665 value = convert_to_twos(value, 8);
666 val =
667 cx25821_i2c_read(&dev->i2c_bus[0],
668 VDEC_A_BRITE_CTRL + (0x200 * decoder), &tmp);
669 val &= 0xFFFFFF00;
670 ret_val |=
671 cx25821_i2c_write(&dev->i2c_bus[0],
672 VDEC_A_BRITE_CTRL + (0x200 * decoder),
673 val | value);
674 mutex_unlock(&dev->lock);
675 return ret_val;
676}
677
678int medusa_set_contrast(struct cx25821_dev *dev, int contrast, int decoder)
679{
680 int ret_val = 0;
681 int value = 0;
682 u32 val = 0, tmp = 0;
683
684 mutex_lock(&dev->lock);
685
686 if ((contrast > VIDEO_PROCAMP_MAX) || (contrast < VIDEO_PROCAMP_MIN)) {
687 mutex_unlock(&dev->lock);
688 return -1;
689 }
690
691 ret_val =
692 mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, contrast,
693 UNSIGNED_BYTE_MIN, UNSIGNED_BYTE_MAX, &value);
694 val =
695 cx25821_i2c_read(&dev->i2c_bus[0],
696 VDEC_A_CNTRST_CTRL + (0x200 * decoder), &tmp);
697 val &= 0xFFFFFF00;
698 ret_val |=
699 cx25821_i2c_write(&dev->i2c_bus[0],
700 VDEC_A_CNTRST_CTRL + (0x200 * decoder),
701 val | value);
702
703 mutex_unlock(&dev->lock);
704 return ret_val;
705}
706
707int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder)
708{
709 int ret_val = 0;
710 int value = 0;
711 u32 val = 0, tmp = 0;
712
713 mutex_lock(&dev->lock);
714
715 if ((hue > VIDEO_PROCAMP_MAX) || (hue < VIDEO_PROCAMP_MIN)) {
716 mutex_unlock(&dev->lock);
717 return -1;
718 }
719
720 ret_val =
721 mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, hue, SIGNED_BYTE_MIN,
722 SIGNED_BYTE_MAX, &value);
723
724 value = convert_to_twos(value, 8);
725 val =
726 cx25821_i2c_read(&dev->i2c_bus[0],
727 VDEC_A_HUE_CTRL + (0x200 * decoder), &tmp);
728 val &= 0xFFFFFF00;
729
730 ret_val |=
731 cx25821_i2c_write(&dev->i2c_bus[0],
732 VDEC_A_HUE_CTRL + (0x200 * decoder), val | value);
733
734 mutex_unlock(&dev->lock);
735 return ret_val;
736}
737
738int medusa_set_saturation(struct cx25821_dev *dev, int saturation, int decoder)
739{
740 int ret_val = 0;
741 int value = 0;
742 u32 val = 0, tmp = 0;
743
744 mutex_lock(&dev->lock);
745
746 if ((saturation > VIDEO_PROCAMP_MAX)
747 || (saturation < VIDEO_PROCAMP_MIN)) {
748 mutex_unlock(&dev->lock);
749 return -1;
750 }
751
752 ret_val =
753 mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, saturation,
754 UNSIGNED_BYTE_MIN, UNSIGNED_BYTE_MAX, &value);
755
756 val =
757 cx25821_i2c_read(&dev->i2c_bus[0],
758 VDEC_A_USAT_CTRL + (0x200 * decoder), &tmp);
759 val &= 0xFFFFFF00;
760 ret_val |=
761 cx25821_i2c_write(&dev->i2c_bus[0],
762 VDEC_A_USAT_CTRL + (0x200 * decoder),
763 val | value);
764
765 val =
766 cx25821_i2c_read(&dev->i2c_bus[0],
767 VDEC_A_VSAT_CTRL + (0x200 * decoder), &tmp);
768 val &= 0xFFFFFF00;
769 ret_val |=
770 cx25821_i2c_write(&dev->i2c_bus[0],
771 VDEC_A_VSAT_CTRL + (0x200 * decoder),
772 val | value);
773
774 mutex_unlock(&dev->lock);
775 return ret_val;
776}
777
778/* Program the display sequence and monitor output. */
779
780int medusa_video_init(struct cx25821_dev *dev)
781{
782 u32 value = 0, tmp = 0;
783 int ret_val = 0;
784 int i = 0;
785
786 mutex_lock(&dev->lock);
787
788 _num_decoders = dev->_max_num_decoders;
789
790 /* disable Auto source selection on all video decoders */
791 value = cx25821_i2c_read(&dev->i2c_bus[0], MON_A_CTRL, &tmp);
792 value &= 0xFFFFF0FF;
793 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], MON_A_CTRL, value);
794
795 if (ret_val < 0)
796 goto error;
797
798 /* Turn off Master source switch enable */
799 value = cx25821_i2c_read(&dev->i2c_bus[0], MON_A_CTRL, &tmp);
800 value &= 0xFFFFFFDF;
801 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], MON_A_CTRL, value);
802
803 if (ret_val < 0)
804 goto error;
805
806 mutex_unlock(&dev->lock);
807
808 for (i = 0; i < _num_decoders; i++)
809 medusa_set_decoderduration(dev, i, _display_field_cnt[i]);
810
811 mutex_lock(&dev->lock);
812
813 /* Select monitor as DENC A input, power up the DAC */
814 value = cx25821_i2c_read(&dev->i2c_bus[0], DENC_AB_CTRL, &tmp);
815 value &= 0xFF70FF70;
816 value |= 0x00090008; /* set en_active */
817 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], DENC_AB_CTRL, value);
818
819 if (ret_val < 0)
820 goto error;
821
822 /* enable input is VIP/656 */
823 value = cx25821_i2c_read(&dev->i2c_bus[0], BYP_AB_CTRL, &tmp);
824 value |= 0x00040100; /* enable VIP */
825 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], BYP_AB_CTRL, value);
826
827 if (ret_val < 0)
828 goto error;
829
830 /* select AFE clock to output mode */
831 value = cx25821_i2c_read(&dev->i2c_bus[0], AFE_AB_DIAG_CTRL, &tmp);
832 value &= 0x83FFFFFF;
833 ret_val =
834 cx25821_i2c_write(&dev->i2c_bus[0], AFE_AB_DIAG_CTRL,
835 value | 0x10000000);
836
837 if (ret_val < 0)
838 goto error;
839
840 /* Turn on all of the data out and control output pins. */
841 value = cx25821_i2c_read(&dev->i2c_bus[0], PIN_OE_CTRL, &tmp);
842 value &= 0xFEF0FE00;
843 if (_num_decoders == MAX_DECODERS) {
844 /*
845 * Note: The octal board does not support control pins(bit16-19)
846 * These bits are ignored in the octal board.
847 *
848 * disable VDEC A-C port, default to Mobilygen Interface
849 */
850 value |= 0x010001F8;
851 } else {
852 /* disable VDEC A-C port, default to Mobilygen Interface */
853 value |= 0x010F0108;
854 }
855
856 value |= 7;
857 ret_val = cx25821_i2c_write(&dev->i2c_bus[0], PIN_OE_CTRL, value);
858
859 if (ret_val < 0)
860 goto error;
861
862
863 mutex_unlock(&dev->lock);
864
865 ret_val = medusa_set_videostandard(dev);
866
867 return ret_val;
868
869error:
870 mutex_unlock(&dev->lock);
871 return ret_val;
872}
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-11 11:06:42 -0500