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Merge tag 'xtensa-next-20130912' of git://github.com/czankel/xtensa-linux
[deliverable/linux.git] / drivers / video / omap2 / dss / venc.c
1 /*
2 * linux/drivers/video/omap2/dss/venc.c
3 *
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * VENC settings from TI's DSS driver
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published by
11 * the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along with
19 * this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #define DSS_SUBSYS_NAME "VENC"
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/clk.h>
27 #include <linux/err.h>
28 #include <linux/io.h>
29 #include <linux/mutex.h>
30 #include <linux/completion.h>
31 #include <linux/delay.h>
32 #include <linux/string.h>
33 #include <linux/seq_file.h>
34 #include <linux/platform_device.h>
35 #include <linux/regulator/consumer.h>
36 #include <linux/pm_runtime.h>
37
38 #include <video/omapdss.h>
39
40 #include "dss.h"
41 #include "dss_features.h"
42
43 /* Venc registers */
44 #define VENC_REV_ID 0x00
45 #define VENC_STATUS 0x04
46 #define VENC_F_CONTROL 0x08
47 #define VENC_VIDOUT_CTRL 0x10
48 #define VENC_SYNC_CTRL 0x14
49 #define VENC_LLEN 0x1C
50 #define VENC_FLENS 0x20
51 #define VENC_HFLTR_CTRL 0x24
52 #define VENC_CC_CARR_WSS_CARR 0x28
53 #define VENC_C_PHASE 0x2C
54 #define VENC_GAIN_U 0x30
55 #define VENC_GAIN_V 0x34
56 #define VENC_GAIN_Y 0x38
57 #define VENC_BLACK_LEVEL 0x3C
58 #define VENC_BLANK_LEVEL 0x40
59 #define VENC_X_COLOR 0x44
60 #define VENC_M_CONTROL 0x48
61 #define VENC_BSTAMP_WSS_DATA 0x4C
62 #define VENC_S_CARR 0x50
63 #define VENC_LINE21 0x54
64 #define VENC_LN_SEL 0x58
65 #define VENC_L21__WC_CTL 0x5C
66 #define VENC_HTRIGGER_VTRIGGER 0x60
67 #define VENC_SAVID__EAVID 0x64
68 #define VENC_FLEN__FAL 0x68
69 #define VENC_LAL__PHASE_RESET 0x6C
70 #define VENC_HS_INT_START_STOP_X 0x70
71 #define VENC_HS_EXT_START_STOP_X 0x74
72 #define VENC_VS_INT_START_X 0x78
73 #define VENC_VS_INT_STOP_X__VS_INT_START_Y 0x7C
74 #define VENC_VS_INT_STOP_Y__VS_EXT_START_X 0x80
75 #define VENC_VS_EXT_STOP_X__VS_EXT_START_Y 0x84
76 #define VENC_VS_EXT_STOP_Y 0x88
77 #define VENC_AVID_START_STOP_X 0x90
78 #define VENC_AVID_START_STOP_Y 0x94
79 #define VENC_FID_INT_START_X__FID_INT_START_Y 0xA0
80 #define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X 0xA4
81 #define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y 0xA8
82 #define VENC_TVDETGP_INT_START_STOP_X 0xB0
83 #define VENC_TVDETGP_INT_START_STOP_Y 0xB4
84 #define VENC_GEN_CTRL 0xB8
85 #define VENC_OUTPUT_CONTROL 0xC4
86 #define VENC_OUTPUT_TEST 0xC8
87 #define VENC_DAC_B__DAC_C 0xC8
88
89 struct venc_config {
90 u32 f_control;
91 u32 vidout_ctrl;
92 u32 sync_ctrl;
93 u32 llen;
94 u32 flens;
95 u32 hfltr_ctrl;
96 u32 cc_carr_wss_carr;
97 u32 c_phase;
98 u32 gain_u;
99 u32 gain_v;
100 u32 gain_y;
101 u32 black_level;
102 u32 blank_level;
103 u32 x_color;
104 u32 m_control;
105 u32 bstamp_wss_data;
106 u32 s_carr;
107 u32 line21;
108 u32 ln_sel;
109 u32 l21__wc_ctl;
110 u32 htrigger_vtrigger;
111 u32 savid__eavid;
112 u32 flen__fal;
113 u32 lal__phase_reset;
114 u32 hs_int_start_stop_x;
115 u32 hs_ext_start_stop_x;
116 u32 vs_int_start_x;
117 u32 vs_int_stop_x__vs_int_start_y;
118 u32 vs_int_stop_y__vs_ext_start_x;
119 u32 vs_ext_stop_x__vs_ext_start_y;
120 u32 vs_ext_stop_y;
121 u32 avid_start_stop_x;
122 u32 avid_start_stop_y;
123 u32 fid_int_start_x__fid_int_start_y;
124 u32 fid_int_offset_y__fid_ext_start_x;
125 u32 fid_ext_start_y__fid_ext_offset_y;
126 u32 tvdetgp_int_start_stop_x;
127 u32 tvdetgp_int_start_stop_y;
128 u32 gen_ctrl;
129 };
130
131 /* from TRM */
132 static const struct venc_config venc_config_pal_trm = {
133 .f_control = 0,
134 .vidout_ctrl = 1,
135 .sync_ctrl = 0x40,
136 .llen = 0x35F, /* 863 */
137 .flens = 0x270, /* 624 */
138 .hfltr_ctrl = 0,
139 .cc_carr_wss_carr = 0x2F7225ED,
140 .c_phase = 0,
141 .gain_u = 0x111,
142 .gain_v = 0x181,
143 .gain_y = 0x140,
144 .black_level = 0x3B,
145 .blank_level = 0x3B,
146 .x_color = 0x7,
147 .m_control = 0x2,
148 .bstamp_wss_data = 0x3F,
149 .s_carr = 0x2A098ACB,
150 .line21 = 0,
151 .ln_sel = 0x01290015,
152 .l21__wc_ctl = 0x0000F603,
153 .htrigger_vtrigger = 0,
154
155 .savid__eavid = 0x06A70108,
156 .flen__fal = 0x00180270,
157 .lal__phase_reset = 0x00040135,
158 .hs_int_start_stop_x = 0x00880358,
159 .hs_ext_start_stop_x = 0x000F035F,
160 .vs_int_start_x = 0x01A70000,
161 .vs_int_stop_x__vs_int_start_y = 0x000001A7,
162 .vs_int_stop_y__vs_ext_start_x = 0x01AF0000,
163 .vs_ext_stop_x__vs_ext_start_y = 0x000101AF,
164 .vs_ext_stop_y = 0x00000025,
165 .avid_start_stop_x = 0x03530083,
166 .avid_start_stop_y = 0x026C002E,
167 .fid_int_start_x__fid_int_start_y = 0x0001008A,
168 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
169 .fid_ext_start_y__fid_ext_offset_y = 0x01380001,
170
171 .tvdetgp_int_start_stop_x = 0x00140001,
172 .tvdetgp_int_start_stop_y = 0x00010001,
173 .gen_ctrl = 0x00FF0000,
174 };
175
176 /* from TRM */
177 static const struct venc_config venc_config_ntsc_trm = {
178 .f_control = 0,
179 .vidout_ctrl = 1,
180 .sync_ctrl = 0x8040,
181 .llen = 0x359,
182 .flens = 0x20C,
183 .hfltr_ctrl = 0,
184 .cc_carr_wss_carr = 0x043F2631,
185 .c_phase = 0,
186 .gain_u = 0x102,
187 .gain_v = 0x16C,
188 .gain_y = 0x12F,
189 .black_level = 0x43,
190 .blank_level = 0x38,
191 .x_color = 0x7,
192 .m_control = 0x1,
193 .bstamp_wss_data = 0x38,
194 .s_carr = 0x21F07C1F,
195 .line21 = 0,
196 .ln_sel = 0x01310011,
197 .l21__wc_ctl = 0x0000F003,
198 .htrigger_vtrigger = 0,
199
200 .savid__eavid = 0x069300F4,
201 .flen__fal = 0x0016020C,
202 .lal__phase_reset = 0x00060107,
203 .hs_int_start_stop_x = 0x008E0350,
204 .hs_ext_start_stop_x = 0x000F0359,
205 .vs_int_start_x = 0x01A00000,
206 .vs_int_stop_x__vs_int_start_y = 0x020701A0,
207 .vs_int_stop_y__vs_ext_start_x = 0x01AC0024,
208 .vs_ext_stop_x__vs_ext_start_y = 0x020D01AC,
209 .vs_ext_stop_y = 0x00000006,
210 .avid_start_stop_x = 0x03480078,
211 .avid_start_stop_y = 0x02060024,
212 .fid_int_start_x__fid_int_start_y = 0x0001008A,
213 .fid_int_offset_y__fid_ext_start_x = 0x01AC0106,
214 .fid_ext_start_y__fid_ext_offset_y = 0x01060006,
215
216 .tvdetgp_int_start_stop_x = 0x00140001,
217 .tvdetgp_int_start_stop_y = 0x00010001,
218 .gen_ctrl = 0x00F90000,
219 };
220
221 static const struct venc_config venc_config_pal_bdghi = {
222 .f_control = 0,
223 .vidout_ctrl = 0,
224 .sync_ctrl = 0,
225 .hfltr_ctrl = 0,
226 .x_color = 0,
227 .line21 = 0,
228 .ln_sel = 21,
229 .htrigger_vtrigger = 0,
230 .tvdetgp_int_start_stop_x = 0x00140001,
231 .tvdetgp_int_start_stop_y = 0x00010001,
232 .gen_ctrl = 0x00FB0000,
233
234 .llen = 864-1,
235 .flens = 625-1,
236 .cc_carr_wss_carr = 0x2F7625ED,
237 .c_phase = 0xDF,
238 .gain_u = 0x111,
239 .gain_v = 0x181,
240 .gain_y = 0x140,
241 .black_level = 0x3e,
242 .blank_level = 0x3e,
243 .m_control = 0<<2 | 1<<1,
244 .bstamp_wss_data = 0x42,
245 .s_carr = 0x2a098acb,
246 .l21__wc_ctl = 0<<13 | 0x16<<8 | 0<<0,
247 .savid__eavid = 0x06A70108,
248 .flen__fal = 23<<16 | 624<<0,
249 .lal__phase_reset = 2<<17 | 310<<0,
250 .hs_int_start_stop_x = 0x00920358,
251 .hs_ext_start_stop_x = 0x000F035F,
252 .vs_int_start_x = 0x1a7<<16,
253 .vs_int_stop_x__vs_int_start_y = 0x000601A7,
254 .vs_int_stop_y__vs_ext_start_x = 0x01AF0036,
255 .vs_ext_stop_x__vs_ext_start_y = 0x27101af,
256 .vs_ext_stop_y = 0x05,
257 .avid_start_stop_x = 0x03530082,
258 .avid_start_stop_y = 0x0270002E,
259 .fid_int_start_x__fid_int_start_y = 0x0005008A,
260 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
261 .fid_ext_start_y__fid_ext_offset_y = 0x01380005,
262 };
263
264 const struct omap_video_timings omap_dss_pal_timings = {
265 .x_res = 720,
266 .y_res = 574,
267 .pixel_clock = 13500,
268 .hsw = 64,
269 .hfp = 12,
270 .hbp = 68,
271 .vsw = 5,
272 .vfp = 5,
273 .vbp = 41,
274
275 .interlace = true,
276 };
277 EXPORT_SYMBOL(omap_dss_pal_timings);
278
279 const struct omap_video_timings omap_dss_ntsc_timings = {
280 .x_res = 720,
281 .y_res = 482,
282 .pixel_clock = 13500,
283 .hsw = 64,
284 .hfp = 16,
285 .hbp = 58,
286 .vsw = 6,
287 .vfp = 6,
288 .vbp = 31,
289
290 .interlace = true,
291 };
292 EXPORT_SYMBOL(omap_dss_ntsc_timings);
293
294 static struct {
295 struct platform_device *pdev;
296 void __iomem *base;
297 struct mutex venc_lock;
298 u32 wss_data;
299 struct regulator *vdda_dac_reg;
300
301 struct clk *tv_dac_clk;
302
303 struct omap_video_timings timings;
304 enum omap_dss_venc_type type;
305 bool invert_polarity;
306
307 struct omap_dss_device output;
308 } venc;
309
310 static inline void venc_write_reg(int idx, u32 val)
311 {
312 __raw_writel(val, venc.base + idx);
313 }
314
315 static inline u32 venc_read_reg(int idx)
316 {
317 u32 l = __raw_readl(venc.base + idx);
318 return l;
319 }
320
321 static void venc_write_config(const struct venc_config *config)
322 {
323 DSSDBG("write venc conf\n");
324
325 venc_write_reg(VENC_LLEN, config->llen);
326 venc_write_reg(VENC_FLENS, config->flens);
327 venc_write_reg(VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
328 venc_write_reg(VENC_C_PHASE, config->c_phase);
329 venc_write_reg(VENC_GAIN_U, config->gain_u);
330 venc_write_reg(VENC_GAIN_V, config->gain_v);
331 venc_write_reg(VENC_GAIN_Y, config->gain_y);
332 venc_write_reg(VENC_BLACK_LEVEL, config->black_level);
333 venc_write_reg(VENC_BLANK_LEVEL, config->blank_level);
334 venc_write_reg(VENC_M_CONTROL, config->m_control);
335 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
336 venc.wss_data);
337 venc_write_reg(VENC_S_CARR, config->s_carr);
338 venc_write_reg(VENC_L21__WC_CTL, config->l21__wc_ctl);
339 venc_write_reg(VENC_SAVID__EAVID, config->savid__eavid);
340 venc_write_reg(VENC_FLEN__FAL, config->flen__fal);
341 venc_write_reg(VENC_LAL__PHASE_RESET, config->lal__phase_reset);
342 venc_write_reg(VENC_HS_INT_START_STOP_X, config->hs_int_start_stop_x);
343 venc_write_reg(VENC_HS_EXT_START_STOP_X, config->hs_ext_start_stop_x);
344 venc_write_reg(VENC_VS_INT_START_X, config->vs_int_start_x);
345 venc_write_reg(VENC_VS_INT_STOP_X__VS_INT_START_Y,
346 config->vs_int_stop_x__vs_int_start_y);
347 venc_write_reg(VENC_VS_INT_STOP_Y__VS_EXT_START_X,
348 config->vs_int_stop_y__vs_ext_start_x);
349 venc_write_reg(VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
350 config->vs_ext_stop_x__vs_ext_start_y);
351 venc_write_reg(VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
352 venc_write_reg(VENC_AVID_START_STOP_X, config->avid_start_stop_x);
353 venc_write_reg(VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
354 venc_write_reg(VENC_FID_INT_START_X__FID_INT_START_Y,
355 config->fid_int_start_x__fid_int_start_y);
356 venc_write_reg(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
357 config->fid_int_offset_y__fid_ext_start_x);
358 venc_write_reg(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
359 config->fid_ext_start_y__fid_ext_offset_y);
360
361 venc_write_reg(VENC_DAC_B__DAC_C, venc_read_reg(VENC_DAC_B__DAC_C));
362 venc_write_reg(VENC_VIDOUT_CTRL, config->vidout_ctrl);
363 venc_write_reg(VENC_HFLTR_CTRL, config->hfltr_ctrl);
364 venc_write_reg(VENC_X_COLOR, config->x_color);
365 venc_write_reg(VENC_LINE21, config->line21);
366 venc_write_reg(VENC_LN_SEL, config->ln_sel);
367 venc_write_reg(VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
368 venc_write_reg(VENC_TVDETGP_INT_START_STOP_X,
369 config->tvdetgp_int_start_stop_x);
370 venc_write_reg(VENC_TVDETGP_INT_START_STOP_Y,
371 config->tvdetgp_int_start_stop_y);
372 venc_write_reg(VENC_GEN_CTRL, config->gen_ctrl);
373 venc_write_reg(VENC_F_CONTROL, config->f_control);
374 venc_write_reg(VENC_SYNC_CTRL, config->sync_ctrl);
375 }
376
377 static void venc_reset(void)
378 {
379 int t = 1000;
380
381 venc_write_reg(VENC_F_CONTROL, 1<<8);
382 while (venc_read_reg(VENC_F_CONTROL) & (1<<8)) {
383 if (--t == 0) {
384 DSSERR("Failed to reset venc\n");
385 return;
386 }
387 }
388
389 #ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
390 /* the magical sleep that makes things work */
391 /* XXX more info? What bug this circumvents? */
392 msleep(20);
393 #endif
394 }
395
396 static int venc_runtime_get(void)
397 {
398 int r;
399
400 DSSDBG("venc_runtime_get\n");
401
402 r = pm_runtime_get_sync(&venc.pdev->dev);
403 WARN_ON(r < 0);
404 return r < 0 ? r : 0;
405 }
406
407 static void venc_runtime_put(void)
408 {
409 int r;
410
411 DSSDBG("venc_runtime_put\n");
412
413 r = pm_runtime_put_sync(&venc.pdev->dev);
414 WARN_ON(r < 0 && r != -ENOSYS);
415 }
416
417 static const struct venc_config *venc_timings_to_config(
418 struct omap_video_timings *timings)
419 {
420 if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0)
421 return &venc_config_pal_trm;
422
423 if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0)
424 return &venc_config_ntsc_trm;
425
426 BUG();
427 return NULL;
428 }
429
430 static int venc_power_on(struct omap_dss_device *dssdev)
431 {
432 struct omap_overlay_manager *mgr = venc.output.manager;
433 u32 l;
434 int r;
435
436 r = venc_runtime_get();
437 if (r)
438 goto err0;
439
440 venc_reset();
441 venc_write_config(venc_timings_to_config(&venc.timings));
442
443 dss_set_venc_output(venc.type);
444 dss_set_dac_pwrdn_bgz(1);
445
446 l = 0;
447
448 if (venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE)
449 l |= 1 << 1;
450 else /* S-Video */
451 l |= (1 << 0) | (1 << 2);
452
453 if (venc.invert_polarity == false)
454 l |= 1 << 3;
455
456 venc_write_reg(VENC_OUTPUT_CONTROL, l);
457
458 dss_mgr_set_timings(mgr, &venc.timings);
459
460 r = regulator_enable(venc.vdda_dac_reg);
461 if (r)
462 goto err1;
463
464 r = dss_mgr_enable(mgr);
465 if (r)
466 goto err2;
467
468 return 0;
469
470 err2:
471 regulator_disable(venc.vdda_dac_reg);
472 err1:
473 venc_write_reg(VENC_OUTPUT_CONTROL, 0);
474 dss_set_dac_pwrdn_bgz(0);
475
476 venc_runtime_put();
477 err0:
478 return r;
479 }
480
481 static void venc_power_off(struct omap_dss_device *dssdev)
482 {
483 struct omap_overlay_manager *mgr = venc.output.manager;
484
485 venc_write_reg(VENC_OUTPUT_CONTROL, 0);
486 dss_set_dac_pwrdn_bgz(0);
487
488 dss_mgr_disable(mgr);
489
490 regulator_disable(venc.vdda_dac_reg);
491
492 venc_runtime_put();
493 }
494
495 static int venc_display_enable(struct omap_dss_device *dssdev)
496 {
497 struct omap_dss_device *out = &venc.output;
498 int r;
499
500 DSSDBG("venc_display_enable\n");
501
502 mutex_lock(&venc.venc_lock);
503
504 if (out == NULL || out->manager == NULL) {
505 DSSERR("Failed to enable display: no output/manager\n");
506 r = -ENODEV;
507 goto err0;
508 }
509
510 r = venc_power_on(dssdev);
511 if (r)
512 goto err0;
513
514 venc.wss_data = 0;
515
516 mutex_unlock(&venc.venc_lock);
517
518 return 0;
519 err0:
520 mutex_unlock(&venc.venc_lock);
521 return r;
522 }
523
524 static void venc_display_disable(struct omap_dss_device *dssdev)
525 {
526 DSSDBG("venc_display_disable\n");
527
528 mutex_lock(&venc.venc_lock);
529
530 venc_power_off(dssdev);
531
532 mutex_unlock(&venc.venc_lock);
533 }
534
535 static void venc_set_timings(struct omap_dss_device *dssdev,
536 struct omap_video_timings *timings)
537 {
538 DSSDBG("venc_set_timings\n");
539
540 mutex_lock(&venc.venc_lock);
541
542 /* Reset WSS data when the TV standard changes. */
543 if (memcmp(&venc.timings, timings, sizeof(*timings)))
544 venc.wss_data = 0;
545
546 venc.timings = *timings;
547
548 dispc_set_tv_pclk(13500000);
549
550 mutex_unlock(&venc.venc_lock);
551 }
552
553 static int venc_check_timings(struct omap_dss_device *dssdev,
554 struct omap_video_timings *timings)
555 {
556 DSSDBG("venc_check_timings\n");
557
558 if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0)
559 return 0;
560
561 if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0)
562 return 0;
563
564 return -EINVAL;
565 }
566
567 static void venc_get_timings(struct omap_dss_device *dssdev,
568 struct omap_video_timings *timings)
569 {
570 mutex_lock(&venc.venc_lock);
571
572 *timings = venc.timings;
573
574 mutex_unlock(&venc.venc_lock);
575 }
576
577 static u32 venc_get_wss(struct omap_dss_device *dssdev)
578 {
579 /* Invert due to VENC_L21_WC_CTL:INV=1 */
580 return (venc.wss_data >> 8) ^ 0xfffff;
581 }
582
583 static int venc_set_wss(struct omap_dss_device *dssdev, u32 wss)
584 {
585 const struct venc_config *config;
586 int r;
587
588 DSSDBG("venc_set_wss\n");
589
590 mutex_lock(&venc.venc_lock);
591
592 config = venc_timings_to_config(&venc.timings);
593
594 /* Invert due to VENC_L21_WC_CTL:INV=1 */
595 venc.wss_data = (wss ^ 0xfffff) << 8;
596
597 r = venc_runtime_get();
598 if (r)
599 goto err;
600
601 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
602 venc.wss_data);
603
604 venc_runtime_put();
605
606 err:
607 mutex_unlock(&venc.venc_lock);
608
609 return r;
610 }
611
612 static void venc_set_type(struct omap_dss_device *dssdev,
613 enum omap_dss_venc_type type)
614 {
615 mutex_lock(&venc.venc_lock);
616
617 venc.type = type;
618
619 mutex_unlock(&venc.venc_lock);
620 }
621
622 static void venc_invert_vid_out_polarity(struct omap_dss_device *dssdev,
623 bool invert_polarity)
624 {
625 mutex_lock(&venc.venc_lock);
626
627 venc.invert_polarity = invert_polarity;
628
629 mutex_unlock(&venc.venc_lock);
630 }
631
632 static int venc_init_regulator(void)
633 {
634 struct regulator *vdda_dac;
635
636 if (venc.vdda_dac_reg != NULL)
637 return 0;
638
639 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda_dac");
640
641 if (IS_ERR(vdda_dac)) {
642 DSSERR("can't get VDDA_DAC regulator\n");
643 return PTR_ERR(vdda_dac);
644 }
645
646 venc.vdda_dac_reg = vdda_dac;
647
648 return 0;
649 }
650
651 static void venc_dump_regs(struct seq_file *s)
652 {
653 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(r))
654
655 if (venc_runtime_get())
656 return;
657
658 DUMPREG(VENC_F_CONTROL);
659 DUMPREG(VENC_VIDOUT_CTRL);
660 DUMPREG(VENC_SYNC_CTRL);
661 DUMPREG(VENC_LLEN);
662 DUMPREG(VENC_FLENS);
663 DUMPREG(VENC_HFLTR_CTRL);
664 DUMPREG(VENC_CC_CARR_WSS_CARR);
665 DUMPREG(VENC_C_PHASE);
666 DUMPREG(VENC_GAIN_U);
667 DUMPREG(VENC_GAIN_V);
668 DUMPREG(VENC_GAIN_Y);
669 DUMPREG(VENC_BLACK_LEVEL);
670 DUMPREG(VENC_BLANK_LEVEL);
671 DUMPREG(VENC_X_COLOR);
672 DUMPREG(VENC_M_CONTROL);
673 DUMPREG(VENC_BSTAMP_WSS_DATA);
674 DUMPREG(VENC_S_CARR);
675 DUMPREG(VENC_LINE21);
676 DUMPREG(VENC_LN_SEL);
677 DUMPREG(VENC_L21__WC_CTL);
678 DUMPREG(VENC_HTRIGGER_VTRIGGER);
679 DUMPREG(VENC_SAVID__EAVID);
680 DUMPREG(VENC_FLEN__FAL);
681 DUMPREG(VENC_LAL__PHASE_RESET);
682 DUMPREG(VENC_HS_INT_START_STOP_X);
683 DUMPREG(VENC_HS_EXT_START_STOP_X);
684 DUMPREG(VENC_VS_INT_START_X);
685 DUMPREG(VENC_VS_INT_STOP_X__VS_INT_START_Y);
686 DUMPREG(VENC_VS_INT_STOP_Y__VS_EXT_START_X);
687 DUMPREG(VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
688 DUMPREG(VENC_VS_EXT_STOP_Y);
689 DUMPREG(VENC_AVID_START_STOP_X);
690 DUMPREG(VENC_AVID_START_STOP_Y);
691 DUMPREG(VENC_FID_INT_START_X__FID_INT_START_Y);
692 DUMPREG(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
693 DUMPREG(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
694 DUMPREG(VENC_TVDETGP_INT_START_STOP_X);
695 DUMPREG(VENC_TVDETGP_INT_START_STOP_Y);
696 DUMPREG(VENC_GEN_CTRL);
697 DUMPREG(VENC_OUTPUT_CONTROL);
698 DUMPREG(VENC_OUTPUT_TEST);
699
700 venc_runtime_put();
701
702 #undef DUMPREG
703 }
704
705 static int venc_get_clocks(struct platform_device *pdev)
706 {
707 struct clk *clk;
708
709 if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK)) {
710 clk = devm_clk_get(&pdev->dev, "tv_dac_clk");
711 if (IS_ERR(clk)) {
712 DSSERR("can't get tv_dac_clk\n");
713 return PTR_ERR(clk);
714 }
715 } else {
716 clk = NULL;
717 }
718
719 venc.tv_dac_clk = clk;
720
721 return 0;
722 }
723
724 static int venc_connect(struct omap_dss_device *dssdev,
725 struct omap_dss_device *dst)
726 {
727 struct omap_overlay_manager *mgr;
728 int r;
729
730 r = venc_init_regulator();
731 if (r)
732 return r;
733
734 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
735 if (!mgr)
736 return -ENODEV;
737
738 r = dss_mgr_connect(mgr, dssdev);
739 if (r)
740 return r;
741
742 r = omapdss_output_set_device(dssdev, dst);
743 if (r) {
744 DSSERR("failed to connect output to new device: %s\n",
745 dst->name);
746 dss_mgr_disconnect(mgr, dssdev);
747 return r;
748 }
749
750 return 0;
751 }
752
753 static void venc_disconnect(struct omap_dss_device *dssdev,
754 struct omap_dss_device *dst)
755 {
756 WARN_ON(dst != dssdev->dst);
757
758 if (dst != dssdev->dst)
759 return;
760
761 omapdss_output_unset_device(dssdev);
762
763 if (dssdev->manager)
764 dss_mgr_disconnect(dssdev->manager, dssdev);
765 }
766
767 static const struct omapdss_atv_ops venc_ops = {
768 .connect = venc_connect,
769 .disconnect = venc_disconnect,
770
771 .enable = venc_display_enable,
772 .disable = venc_display_disable,
773
774 .check_timings = venc_check_timings,
775 .set_timings = venc_set_timings,
776 .get_timings = venc_get_timings,
777
778 .set_type = venc_set_type,
779 .invert_vid_out_polarity = venc_invert_vid_out_polarity,
780
781 .set_wss = venc_set_wss,
782 .get_wss = venc_get_wss,
783 };
784
785 static void venc_init_output(struct platform_device *pdev)
786 {
787 struct omap_dss_device *out = &venc.output;
788
789 out->dev = &pdev->dev;
790 out->id = OMAP_DSS_OUTPUT_VENC;
791 out->output_type = OMAP_DISPLAY_TYPE_VENC;
792 out->name = "venc.0";
793 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
794 out->ops.atv = &venc_ops;
795 out->owner = THIS_MODULE;
796
797 omapdss_register_output(out);
798 }
799
800 static void __exit venc_uninit_output(struct platform_device *pdev)
801 {
802 struct omap_dss_device *out = &venc.output;
803
804 omapdss_unregister_output(out);
805 }
806
807 /* VENC HW IP initialisation */
808 static int omap_venchw_probe(struct platform_device *pdev)
809 {
810 u8 rev_id;
811 struct resource *venc_mem;
812 int r;
813
814 venc.pdev = pdev;
815
816 mutex_init(&venc.venc_lock);
817
818 venc.wss_data = 0;
819
820 venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0);
821 if (!venc_mem) {
822 DSSERR("can't get IORESOURCE_MEM VENC\n");
823 return -EINVAL;
824 }
825
826 venc.base = devm_ioremap(&pdev->dev, venc_mem->start,
827 resource_size(venc_mem));
828 if (!venc.base) {
829 DSSERR("can't ioremap VENC\n");
830 return -ENOMEM;
831 }
832
833 r = venc_get_clocks(pdev);
834 if (r)
835 return r;
836
837 pm_runtime_enable(&pdev->dev);
838
839 r = venc_runtime_get();
840 if (r)
841 goto err_runtime_get;
842
843 rev_id = (u8)(venc_read_reg(VENC_REV_ID) & 0xff);
844 dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id);
845
846 venc_runtime_put();
847
848 dss_debugfs_create_file("venc", venc_dump_regs);
849
850 venc_init_output(pdev);
851
852 return 0;
853
854 err_runtime_get:
855 pm_runtime_disable(&pdev->dev);
856 return r;
857 }
858
859 static int __exit omap_venchw_remove(struct platform_device *pdev)
860 {
861 venc_uninit_output(pdev);
862
863 pm_runtime_disable(&pdev->dev);
864
865 return 0;
866 }
867
868 static int venc_runtime_suspend(struct device *dev)
869 {
870 if (venc.tv_dac_clk)
871 clk_disable_unprepare(venc.tv_dac_clk);
872
873 dispc_runtime_put();
874
875 return 0;
876 }
877
878 static int venc_runtime_resume(struct device *dev)
879 {
880 int r;
881
882 r = dispc_runtime_get();
883 if (r < 0)
884 return r;
885
886 if (venc.tv_dac_clk)
887 clk_prepare_enable(venc.tv_dac_clk);
888
889 return 0;
890 }
891
892 static const struct dev_pm_ops venc_pm_ops = {
893 .runtime_suspend = venc_runtime_suspend,
894 .runtime_resume = venc_runtime_resume,
895 };
896
897 static struct platform_driver omap_venchw_driver = {
898 .probe = omap_venchw_probe,
899 .remove = __exit_p(omap_venchw_remove),
900 .driver = {
901 .name = "omapdss_venc",
902 .owner = THIS_MODULE,
903 .pm = &venc_pm_ops,
904 },
905 };
906
907 int __init venc_init_platform_driver(void)
908 {
909 return platform_driver_register(&omap_venchw_driver);
910 }
911
912 void __exit venc_uninit_platform_driver(void)
913 {
914 platform_driver_unregister(&omap_venchw_driver);
915 }
Linux kernel - Deliverables
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