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 #include <linux/of.h>
38
39 #include <video/omapdss.h>
40
41 #include "dss.h"
42 #include "dss_features.h"
43
44 /* Venc registers */
45 #define VENC_REV_ID 0x00
46 #define VENC_STATUS 0x04
47 #define VENC_F_CONTROL 0x08
48 #define VENC_VIDOUT_CTRL 0x10
49 #define VENC_SYNC_CTRL 0x14
50 #define VENC_LLEN 0x1C
51 #define VENC_FLENS 0x20
52 #define VENC_HFLTR_CTRL 0x24
53 #define VENC_CC_CARR_WSS_CARR 0x28
54 #define VENC_C_PHASE 0x2C
55 #define VENC_GAIN_U 0x30
56 #define VENC_GAIN_V 0x34
57 #define VENC_GAIN_Y 0x38
58 #define VENC_BLACK_LEVEL 0x3C
59 #define VENC_BLANK_LEVEL 0x40
60 #define VENC_X_COLOR 0x44
61 #define VENC_M_CONTROL 0x48
62 #define VENC_BSTAMP_WSS_DATA 0x4C
63 #define VENC_S_CARR 0x50
64 #define VENC_LINE21 0x54
65 #define VENC_LN_SEL 0x58
66 #define VENC_L21__WC_CTL 0x5C
67 #define VENC_HTRIGGER_VTRIGGER 0x60
68 #define VENC_SAVID__EAVID 0x64
69 #define VENC_FLEN__FAL 0x68
70 #define VENC_LAL__PHASE_RESET 0x6C
71 #define VENC_HS_INT_START_STOP_X 0x70
72 #define VENC_HS_EXT_START_STOP_X 0x74
73 #define VENC_VS_INT_START_X 0x78
74 #define VENC_VS_INT_STOP_X__VS_INT_START_Y 0x7C
75 #define VENC_VS_INT_STOP_Y__VS_EXT_START_X 0x80
76 #define VENC_VS_EXT_STOP_X__VS_EXT_START_Y 0x84
77 #define VENC_VS_EXT_STOP_Y 0x88
78 #define VENC_AVID_START_STOP_X 0x90
79 #define VENC_AVID_START_STOP_Y 0x94
80 #define VENC_FID_INT_START_X__FID_INT_START_Y 0xA0
81 #define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X 0xA4
82 #define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y 0xA8
83 #define VENC_TVDETGP_INT_START_STOP_X 0xB0
84 #define VENC_TVDETGP_INT_START_STOP_Y 0xB4
85 #define VENC_GEN_CTRL 0xB8
86 #define VENC_OUTPUT_CONTROL 0xC4
87 #define VENC_OUTPUT_TEST 0xC8
88 #define VENC_DAC_B__DAC_C 0xC8
89
90 struct venc_config {
91 u32 f_control;
92 u32 vidout_ctrl;
93 u32 sync_ctrl;
94 u32 llen;
95 u32 flens;
96 u32 hfltr_ctrl;
97 u32 cc_carr_wss_carr;
98 u32 c_phase;
99 u32 gain_u;
100 u32 gain_v;
101 u32 gain_y;
102 u32 black_level;
103 u32 blank_level;
104 u32 x_color;
105 u32 m_control;
106 u32 bstamp_wss_data;
107 u32 s_carr;
108 u32 line21;
109 u32 ln_sel;
110 u32 l21__wc_ctl;
111 u32 htrigger_vtrigger;
112 u32 savid__eavid;
113 u32 flen__fal;
114 u32 lal__phase_reset;
115 u32 hs_int_start_stop_x;
116 u32 hs_ext_start_stop_x;
117 u32 vs_int_start_x;
118 u32 vs_int_stop_x__vs_int_start_y;
119 u32 vs_int_stop_y__vs_ext_start_x;
120 u32 vs_ext_stop_x__vs_ext_start_y;
121 u32 vs_ext_stop_y;
122 u32 avid_start_stop_x;
123 u32 avid_start_stop_y;
124 u32 fid_int_start_x__fid_int_start_y;
125 u32 fid_int_offset_y__fid_ext_start_x;
126 u32 fid_ext_start_y__fid_ext_offset_y;
127 u32 tvdetgp_int_start_stop_x;
128 u32 tvdetgp_int_start_stop_y;
129 u32 gen_ctrl;
130 };
131
132 /* from TRM */
133 static const struct venc_config venc_config_pal_trm = {
134 .f_control = 0,
135 .vidout_ctrl = 1,
136 .sync_ctrl = 0x40,
137 .llen = 0x35F, /* 863 */
138 .flens = 0x270, /* 624 */
139 .hfltr_ctrl = 0,
140 .cc_carr_wss_carr = 0x2F7225ED,
141 .c_phase = 0,
142 .gain_u = 0x111,
143 .gain_v = 0x181,
144 .gain_y = 0x140,
145 .black_level = 0x3B,
146 .blank_level = 0x3B,
147 .x_color = 0x7,
148 .m_control = 0x2,
149 .bstamp_wss_data = 0x3F,
150 .s_carr = 0x2A098ACB,
151 .line21 = 0,
152 .ln_sel = 0x01290015,
153 .l21__wc_ctl = 0x0000F603,
154 .htrigger_vtrigger = 0,
155
156 .savid__eavid = 0x06A70108,
157 .flen__fal = 0x00180270,
158 .lal__phase_reset = 0x00040135,
159 .hs_int_start_stop_x = 0x00880358,
160 .hs_ext_start_stop_x = 0x000F035F,
161 .vs_int_start_x = 0x01A70000,
162 .vs_int_stop_x__vs_int_start_y = 0x000001A7,
163 .vs_int_stop_y__vs_ext_start_x = 0x01AF0000,
164 .vs_ext_stop_x__vs_ext_start_y = 0x000101AF,
165 .vs_ext_stop_y = 0x00000025,
166 .avid_start_stop_x = 0x03530083,
167 .avid_start_stop_y = 0x026C002E,
168 .fid_int_start_x__fid_int_start_y = 0x0001008A,
169 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
170 .fid_ext_start_y__fid_ext_offset_y = 0x01380001,
171
172 .tvdetgp_int_start_stop_x = 0x00140001,
173 .tvdetgp_int_start_stop_y = 0x00010001,
174 .gen_ctrl = 0x00FF0000,
175 };
176
177 /* from TRM */
178 static const struct venc_config venc_config_ntsc_trm = {
179 .f_control = 0,
180 .vidout_ctrl = 1,
181 .sync_ctrl = 0x8040,
182 .llen = 0x359,
183 .flens = 0x20C,
184 .hfltr_ctrl = 0,
185 .cc_carr_wss_carr = 0x043F2631,
186 .c_phase = 0,
187 .gain_u = 0x102,
188 .gain_v = 0x16C,
189 .gain_y = 0x12F,
190 .black_level = 0x43,
191 .blank_level = 0x38,
192 .x_color = 0x7,
193 .m_control = 0x1,
194 .bstamp_wss_data = 0x38,
195 .s_carr = 0x21F07C1F,
196 .line21 = 0,
197 .ln_sel = 0x01310011,
198 .l21__wc_ctl = 0x0000F003,
199 .htrigger_vtrigger = 0,
200
201 .savid__eavid = 0x069300F4,
202 .flen__fal = 0x0016020C,
203 .lal__phase_reset = 0x00060107,
204 .hs_int_start_stop_x = 0x008E0350,
205 .hs_ext_start_stop_x = 0x000F0359,
206 .vs_int_start_x = 0x01A00000,
207 .vs_int_stop_x__vs_int_start_y = 0x020701A0,
208 .vs_int_stop_y__vs_ext_start_x = 0x01AC0024,
209 .vs_ext_stop_x__vs_ext_start_y = 0x020D01AC,
210 .vs_ext_stop_y = 0x00000006,
211 .avid_start_stop_x = 0x03480078,
212 .avid_start_stop_y = 0x02060024,
213 .fid_int_start_x__fid_int_start_y = 0x0001008A,
214 .fid_int_offset_y__fid_ext_start_x = 0x01AC0106,
215 .fid_ext_start_y__fid_ext_offset_y = 0x01060006,
216
217 .tvdetgp_int_start_stop_x = 0x00140001,
218 .tvdetgp_int_start_stop_y = 0x00010001,
219 .gen_ctrl = 0x00F90000,
220 };
221
222 static const struct venc_config venc_config_pal_bdghi = {
223 .f_control = 0,
224 .vidout_ctrl = 0,
225 .sync_ctrl = 0,
226 .hfltr_ctrl = 0,
227 .x_color = 0,
228 .line21 = 0,
229 .ln_sel = 21,
230 .htrigger_vtrigger = 0,
231 .tvdetgp_int_start_stop_x = 0x00140001,
232 .tvdetgp_int_start_stop_y = 0x00010001,
233 .gen_ctrl = 0x00FB0000,
234
235 .llen = 864-1,
236 .flens = 625-1,
237 .cc_carr_wss_carr = 0x2F7625ED,
238 .c_phase = 0xDF,
239 .gain_u = 0x111,
240 .gain_v = 0x181,
241 .gain_y = 0x140,
242 .black_level = 0x3e,
243 .blank_level = 0x3e,
244 .m_control = 0<<2 | 1<<1,
245 .bstamp_wss_data = 0x42,
246 .s_carr = 0x2a098acb,
247 .l21__wc_ctl = 0<<13 | 0x16<<8 | 0<<0,
248 .savid__eavid = 0x06A70108,
249 .flen__fal = 23<<16 | 624<<0,
250 .lal__phase_reset = 2<<17 | 310<<0,
251 .hs_int_start_stop_x = 0x00920358,
252 .hs_ext_start_stop_x = 0x000F035F,
253 .vs_int_start_x = 0x1a7<<16,
254 .vs_int_stop_x__vs_int_start_y = 0x000601A7,
255 .vs_int_stop_y__vs_ext_start_x = 0x01AF0036,
256 .vs_ext_stop_x__vs_ext_start_y = 0x27101af,
257 .vs_ext_stop_y = 0x05,
258 .avid_start_stop_x = 0x03530082,
259 .avid_start_stop_y = 0x0270002E,
260 .fid_int_start_x__fid_int_start_y = 0x0005008A,
261 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
262 .fid_ext_start_y__fid_ext_offset_y = 0x01380005,
263 };
264
265 const struct omap_video_timings omap_dss_pal_timings = {
266 .x_res = 720,
267 .y_res = 574,
268 .pixelclock = 13500000,
269 .hsw = 64,
270 .hfp = 12,
271 .hbp = 68,
272 .vsw = 5,
273 .vfp = 5,
274 .vbp = 41,
275
276 .interlace = true,
277 };
278 EXPORT_SYMBOL(omap_dss_pal_timings);
279
280 const struct omap_video_timings omap_dss_ntsc_timings = {
281 .x_res = 720,
282 .y_res = 482,
283 .pixelclock = 13500000,
284 .hsw = 64,
285 .hfp = 16,
286 .hbp = 58,
287 .vsw = 6,
288 .vfp = 6,
289 .vbp = 31,
290
291 .interlace = true,
292 };
293 EXPORT_SYMBOL(omap_dss_ntsc_timings);
294
295 static struct {
296 struct platform_device *pdev;
297 void __iomem *base;
298 struct mutex venc_lock;
299 u32 wss_data;
300 struct regulator *vdda_dac_reg;
301
302 struct clk *tv_dac_clk;
303
304 struct omap_video_timings timings;
305 enum omap_dss_venc_type type;
306 bool invert_polarity;
307
308 struct omap_dss_device output;
309 } venc;
310
venc_write_reg(int idx,u32 val)311 static inline void venc_write_reg(int idx, u32 val)
312 {
313 __raw_writel(val, venc.base + idx);
314 }
315
venc_read_reg(int idx)316 static inline u32 venc_read_reg(int idx)
317 {
318 u32 l = __raw_readl(venc.base + idx);
319 return l;
320 }
321
venc_write_config(const struct venc_config * config)322 static void venc_write_config(const struct venc_config *config)
323 {
324 DSSDBG("write venc conf\n");
325
326 venc_write_reg(VENC_LLEN, config->llen);
327 venc_write_reg(VENC_FLENS, config->flens);
328 venc_write_reg(VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
329 venc_write_reg(VENC_C_PHASE, config->c_phase);
330 venc_write_reg(VENC_GAIN_U, config->gain_u);
331 venc_write_reg(VENC_GAIN_V, config->gain_v);
332 venc_write_reg(VENC_GAIN_Y, config->gain_y);
333 venc_write_reg(VENC_BLACK_LEVEL, config->black_level);
334 venc_write_reg(VENC_BLANK_LEVEL, config->blank_level);
335 venc_write_reg(VENC_M_CONTROL, config->m_control);
336 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
337 venc.wss_data);
338 venc_write_reg(VENC_S_CARR, config->s_carr);
339 venc_write_reg(VENC_L21__WC_CTL, config->l21__wc_ctl);
340 venc_write_reg(VENC_SAVID__EAVID, config->savid__eavid);
341 venc_write_reg(VENC_FLEN__FAL, config->flen__fal);
342 venc_write_reg(VENC_LAL__PHASE_RESET, config->lal__phase_reset);
343 venc_write_reg(VENC_HS_INT_START_STOP_X, config->hs_int_start_stop_x);
344 venc_write_reg(VENC_HS_EXT_START_STOP_X, config->hs_ext_start_stop_x);
345 venc_write_reg(VENC_VS_INT_START_X, config->vs_int_start_x);
346 venc_write_reg(VENC_VS_INT_STOP_X__VS_INT_START_Y,
347 config->vs_int_stop_x__vs_int_start_y);
348 venc_write_reg(VENC_VS_INT_STOP_Y__VS_EXT_START_X,
349 config->vs_int_stop_y__vs_ext_start_x);
350 venc_write_reg(VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
351 config->vs_ext_stop_x__vs_ext_start_y);
352 venc_write_reg(VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
353 venc_write_reg(VENC_AVID_START_STOP_X, config->avid_start_stop_x);
354 venc_write_reg(VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
355 venc_write_reg(VENC_FID_INT_START_X__FID_INT_START_Y,
356 config->fid_int_start_x__fid_int_start_y);
357 venc_write_reg(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
358 config->fid_int_offset_y__fid_ext_start_x);
359 venc_write_reg(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
360 config->fid_ext_start_y__fid_ext_offset_y);
361
362 venc_write_reg(VENC_DAC_B__DAC_C, venc_read_reg(VENC_DAC_B__DAC_C));
363 venc_write_reg(VENC_VIDOUT_CTRL, config->vidout_ctrl);
364 venc_write_reg(VENC_HFLTR_CTRL, config->hfltr_ctrl);
365 venc_write_reg(VENC_X_COLOR, config->x_color);
366 venc_write_reg(VENC_LINE21, config->line21);
367 venc_write_reg(VENC_LN_SEL, config->ln_sel);
368 venc_write_reg(VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
369 venc_write_reg(VENC_TVDETGP_INT_START_STOP_X,
370 config->tvdetgp_int_start_stop_x);
371 venc_write_reg(VENC_TVDETGP_INT_START_STOP_Y,
372 config->tvdetgp_int_start_stop_y);
373 venc_write_reg(VENC_GEN_CTRL, config->gen_ctrl);
374 venc_write_reg(VENC_F_CONTROL, config->f_control);
375 venc_write_reg(VENC_SYNC_CTRL, config->sync_ctrl);
376 }
377
venc_reset(void)378 static void venc_reset(void)
379 {
380 int t = 1000;
381
382 venc_write_reg(VENC_F_CONTROL, 1<<8);
383 while (venc_read_reg(VENC_F_CONTROL) & (1<<8)) {
384 if (--t == 0) {
385 DSSERR("Failed to reset venc\n");
386 return;
387 }
388 }
389
390 #ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
391 /* the magical sleep that makes things work */
392 /* XXX more info? What bug this circumvents? */
393 msleep(20);
394 #endif
395 }
396
venc_runtime_get(void)397 static int venc_runtime_get(void)
398 {
399 int r;
400
401 DSSDBG("venc_runtime_get\n");
402
403 r = pm_runtime_get_sync(&venc.pdev->dev);
404 WARN_ON(r < 0);
405 return r < 0 ? r : 0;
406 }
407
venc_runtime_put(void)408 static void venc_runtime_put(void)
409 {
410 int r;
411
412 DSSDBG("venc_runtime_put\n");
413
414 r = pm_runtime_put_sync(&venc.pdev->dev);
415 WARN_ON(r < 0 && r != -ENOSYS);
416 }
417
venc_timings_to_config(struct omap_video_timings * timings)418 static const struct venc_config *venc_timings_to_config(
419 struct omap_video_timings *timings)
420 {
421 if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0)
422 return &venc_config_pal_trm;
423
424 if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0)
425 return &venc_config_ntsc_trm;
426
427 BUG();
428 return NULL;
429 }
430
venc_power_on(struct omap_dss_device * dssdev)431 static int venc_power_on(struct omap_dss_device *dssdev)
432 {
433 struct omap_overlay_manager *mgr = venc.output.manager;
434 u32 l;
435 int r;
436
437 r = venc_runtime_get();
438 if (r)
439 goto err0;
440
441 venc_reset();
442 venc_write_config(venc_timings_to_config(&venc.timings));
443
444 dss_set_venc_output(venc.type);
445 dss_set_dac_pwrdn_bgz(1);
446
447 l = 0;
448
449 if (venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE)
450 l |= 1 << 1;
451 else /* S-Video */
452 l |= (1 << 0) | (1 << 2);
453
454 if (venc.invert_polarity == false)
455 l |= 1 << 3;
456
457 venc_write_reg(VENC_OUTPUT_CONTROL, l);
458
459 dss_mgr_set_timings(mgr, &venc.timings);
460
461 r = regulator_enable(venc.vdda_dac_reg);
462 if (r)
463 goto err1;
464
465 r = dss_mgr_enable(mgr);
466 if (r)
467 goto err2;
468
469 return 0;
470
471 err2:
472 regulator_disable(venc.vdda_dac_reg);
473 err1:
474 venc_write_reg(VENC_OUTPUT_CONTROL, 0);
475 dss_set_dac_pwrdn_bgz(0);
476
477 venc_runtime_put();
478 err0:
479 return r;
480 }
481
venc_power_off(struct omap_dss_device * dssdev)482 static void venc_power_off(struct omap_dss_device *dssdev)
483 {
484 struct omap_overlay_manager *mgr = venc.output.manager;
485
486 venc_write_reg(VENC_OUTPUT_CONTROL, 0);
487 dss_set_dac_pwrdn_bgz(0);
488
489 dss_mgr_disable(mgr);
490
491 regulator_disable(venc.vdda_dac_reg);
492
493 venc_runtime_put();
494 }
495
venc_display_enable(struct omap_dss_device * dssdev)496 static int venc_display_enable(struct omap_dss_device *dssdev)
497 {
498 struct omap_dss_device *out = &venc.output;
499 int r;
500
501 DSSDBG("venc_display_enable\n");
502
503 mutex_lock(&venc.venc_lock);
504
505 if (out == NULL || out->manager == NULL) {
506 DSSERR("Failed to enable display: no output/manager\n");
507 r = -ENODEV;
508 goto err0;
509 }
510
511 r = venc_power_on(dssdev);
512 if (r)
513 goto err0;
514
515 venc.wss_data = 0;
516
517 mutex_unlock(&venc.venc_lock);
518
519 return 0;
520 err0:
521 mutex_unlock(&venc.venc_lock);
522 return r;
523 }
524
venc_display_disable(struct omap_dss_device * dssdev)525 static void venc_display_disable(struct omap_dss_device *dssdev)
526 {
527 DSSDBG("venc_display_disable\n");
528
529 mutex_lock(&venc.venc_lock);
530
531 venc_power_off(dssdev);
532
533 mutex_unlock(&venc.venc_lock);
534 }
535
venc_set_timings(struct omap_dss_device * dssdev,struct omap_video_timings * timings)536 static void venc_set_timings(struct omap_dss_device *dssdev,
537 struct omap_video_timings *timings)
538 {
539 DSSDBG("venc_set_timings\n");
540
541 mutex_lock(&venc.venc_lock);
542
543 /* Reset WSS data when the TV standard changes. */
544 if (memcmp(&venc.timings, timings, sizeof(*timings)))
545 venc.wss_data = 0;
546
547 venc.timings = *timings;
548
549 dispc_set_tv_pclk(13500000);
550
551 mutex_unlock(&venc.venc_lock);
552 }
553
venc_check_timings(struct omap_dss_device * dssdev,struct omap_video_timings * timings)554 static int venc_check_timings(struct omap_dss_device *dssdev,
555 struct omap_video_timings *timings)
556 {
557 DSSDBG("venc_check_timings\n");
558
559 if (memcmp(&omap_dss_pal_timings, timings, sizeof(*timings)) == 0)
560 return 0;
561
562 if (memcmp(&omap_dss_ntsc_timings, timings, sizeof(*timings)) == 0)
563 return 0;
564
565 return -EINVAL;
566 }
567
venc_get_timings(struct omap_dss_device * dssdev,struct omap_video_timings * timings)568 static void venc_get_timings(struct omap_dss_device *dssdev,
569 struct omap_video_timings *timings)
570 {
571 mutex_lock(&venc.venc_lock);
572
573 *timings = venc.timings;
574
575 mutex_unlock(&venc.venc_lock);
576 }
577
venc_get_wss(struct omap_dss_device * dssdev)578 static u32 venc_get_wss(struct omap_dss_device *dssdev)
579 {
580 /* Invert due to VENC_L21_WC_CTL:INV=1 */
581 return (venc.wss_data >> 8) ^ 0xfffff;
582 }
583
venc_set_wss(struct omap_dss_device * dssdev,u32 wss)584 static int venc_set_wss(struct omap_dss_device *dssdev, u32 wss)
585 {
586 const struct venc_config *config;
587 int r;
588
589 DSSDBG("venc_set_wss\n");
590
591 mutex_lock(&venc.venc_lock);
592
593 config = venc_timings_to_config(&venc.timings);
594
595 /* Invert due to VENC_L21_WC_CTL:INV=1 */
596 venc.wss_data = (wss ^ 0xfffff) << 8;
597
598 r = venc_runtime_get();
599 if (r)
600 goto err;
601
602 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
603 venc.wss_data);
604
605 venc_runtime_put();
606
607 err:
608 mutex_unlock(&venc.venc_lock);
609
610 return r;
611 }
612
venc_set_type(struct omap_dss_device * dssdev,enum omap_dss_venc_type type)613 static void venc_set_type(struct omap_dss_device *dssdev,
614 enum omap_dss_venc_type type)
615 {
616 mutex_lock(&venc.venc_lock);
617
618 venc.type = type;
619
620 mutex_unlock(&venc.venc_lock);
621 }
622
venc_invert_vid_out_polarity(struct omap_dss_device * dssdev,bool invert_polarity)623 static void venc_invert_vid_out_polarity(struct omap_dss_device *dssdev,
624 bool invert_polarity)
625 {
626 mutex_lock(&venc.venc_lock);
627
628 venc.invert_polarity = invert_polarity;
629
630 mutex_unlock(&venc.venc_lock);
631 }
632
venc_init_regulator(void)633 static int venc_init_regulator(void)
634 {
635 struct regulator *vdda_dac;
636
637 if (venc.vdda_dac_reg != NULL)
638 return 0;
639
640 if (venc.pdev->dev.of_node)
641 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda");
642 else
643 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda_dac");
644
645 if (IS_ERR(vdda_dac)) {
646 if (PTR_ERR(vdda_dac) != -EPROBE_DEFER)
647 DSSERR("can't get VDDA_DAC regulator\n");
648 return PTR_ERR(vdda_dac);
649 }
650
651 venc.vdda_dac_reg = vdda_dac;
652
653 return 0;
654 }
655
venc_dump_regs(struct seq_file * s)656 static void venc_dump_regs(struct seq_file *s)
657 {
658 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(r))
659
660 if (venc_runtime_get())
661 return;
662
663 DUMPREG(VENC_F_CONTROL);
664 DUMPREG(VENC_VIDOUT_CTRL);
665 DUMPREG(VENC_SYNC_CTRL);
666 DUMPREG(VENC_LLEN);
667 DUMPREG(VENC_FLENS);
668 DUMPREG(VENC_HFLTR_CTRL);
669 DUMPREG(VENC_CC_CARR_WSS_CARR);
670 DUMPREG(VENC_C_PHASE);
671 DUMPREG(VENC_GAIN_U);
672 DUMPREG(VENC_GAIN_V);
673 DUMPREG(VENC_GAIN_Y);
674 DUMPREG(VENC_BLACK_LEVEL);
675 DUMPREG(VENC_BLANK_LEVEL);
676 DUMPREG(VENC_X_COLOR);
677 DUMPREG(VENC_M_CONTROL);
678 DUMPREG(VENC_BSTAMP_WSS_DATA);
679 DUMPREG(VENC_S_CARR);
680 DUMPREG(VENC_LINE21);
681 DUMPREG(VENC_LN_SEL);
682 DUMPREG(VENC_L21__WC_CTL);
683 DUMPREG(VENC_HTRIGGER_VTRIGGER);
684 DUMPREG(VENC_SAVID__EAVID);
685 DUMPREG(VENC_FLEN__FAL);
686 DUMPREG(VENC_LAL__PHASE_RESET);
687 DUMPREG(VENC_HS_INT_START_STOP_X);
688 DUMPREG(VENC_HS_EXT_START_STOP_X);
689 DUMPREG(VENC_VS_INT_START_X);
690 DUMPREG(VENC_VS_INT_STOP_X__VS_INT_START_Y);
691 DUMPREG(VENC_VS_INT_STOP_Y__VS_EXT_START_X);
692 DUMPREG(VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
693 DUMPREG(VENC_VS_EXT_STOP_Y);
694 DUMPREG(VENC_AVID_START_STOP_X);
695 DUMPREG(VENC_AVID_START_STOP_Y);
696 DUMPREG(VENC_FID_INT_START_X__FID_INT_START_Y);
697 DUMPREG(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
698 DUMPREG(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
699 DUMPREG(VENC_TVDETGP_INT_START_STOP_X);
700 DUMPREG(VENC_TVDETGP_INT_START_STOP_Y);
701 DUMPREG(VENC_GEN_CTRL);
702 DUMPREG(VENC_OUTPUT_CONTROL);
703 DUMPREG(VENC_OUTPUT_TEST);
704
705 venc_runtime_put();
706
707 #undef DUMPREG
708 }
709
venc_get_clocks(struct platform_device * pdev)710 static int venc_get_clocks(struct platform_device *pdev)
711 {
712 struct clk *clk;
713
714 if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK)) {
715 clk = devm_clk_get(&pdev->dev, "tv_dac_clk");
716 if (IS_ERR(clk)) {
717 DSSERR("can't get tv_dac_clk\n");
718 return PTR_ERR(clk);
719 }
720 } else {
721 clk = NULL;
722 }
723
724 venc.tv_dac_clk = clk;
725
726 return 0;
727 }
728
venc_connect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)729 static int venc_connect(struct omap_dss_device *dssdev,
730 struct omap_dss_device *dst)
731 {
732 struct omap_overlay_manager *mgr;
733 int r;
734
735 r = venc_init_regulator();
736 if (r)
737 return r;
738
739 mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
740 if (!mgr)
741 return -ENODEV;
742
743 r = dss_mgr_connect(mgr, dssdev);
744 if (r)
745 return r;
746
747 r = omapdss_output_set_device(dssdev, dst);
748 if (r) {
749 DSSERR("failed to connect output to new device: %s\n",
750 dst->name);
751 dss_mgr_disconnect(mgr, dssdev);
752 return r;
753 }
754
755 return 0;
756 }
757
venc_disconnect(struct omap_dss_device * dssdev,struct omap_dss_device * dst)758 static void venc_disconnect(struct omap_dss_device *dssdev,
759 struct omap_dss_device *dst)
760 {
761 WARN_ON(dst != dssdev->dst);
762
763 if (dst != dssdev->dst)
764 return;
765
766 omapdss_output_unset_device(dssdev);
767
768 if (dssdev->manager)
769 dss_mgr_disconnect(dssdev->manager, dssdev);
770 }
771
772 static const struct omapdss_atv_ops venc_ops = {
773 .connect = venc_connect,
774 .disconnect = venc_disconnect,
775
776 .enable = venc_display_enable,
777 .disable = venc_display_disable,
778
779 .check_timings = venc_check_timings,
780 .set_timings = venc_set_timings,
781 .get_timings = venc_get_timings,
782
783 .set_type = venc_set_type,
784 .invert_vid_out_polarity = venc_invert_vid_out_polarity,
785
786 .set_wss = venc_set_wss,
787 .get_wss = venc_get_wss,
788 };
789
venc_init_output(struct platform_device * pdev)790 static void venc_init_output(struct platform_device *pdev)
791 {
792 struct omap_dss_device *out = &venc.output;
793
794 out->dev = &pdev->dev;
795 out->id = OMAP_DSS_OUTPUT_VENC;
796 out->output_type = OMAP_DISPLAY_TYPE_VENC;
797 out->name = "venc.0";
798 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
799 out->ops.atv = &venc_ops;
800 out->owner = THIS_MODULE;
801
802 omapdss_register_output(out);
803 }
804
venc_uninit_output(struct platform_device * pdev)805 static void __exit venc_uninit_output(struct platform_device *pdev)
806 {
807 struct omap_dss_device *out = &venc.output;
808
809 omapdss_unregister_output(out);
810 }
811
venc_probe_of(struct platform_device * pdev)812 static int venc_probe_of(struct platform_device *pdev)
813 {
814 struct device_node *node = pdev->dev.of_node;
815 struct device_node *ep;
816 u32 channels;
817 int r;
818
819 ep = omapdss_of_get_first_endpoint(node);
820 if (!ep)
821 return 0;
822
823 venc.invert_polarity = of_property_read_bool(ep, "ti,invert-polarity");
824
825 r = of_property_read_u32(ep, "ti,channels", &channels);
826 if (r) {
827 dev_err(&pdev->dev,
828 "failed to read property 'ti,channels': %d\n", r);
829 goto err;
830 }
831
832 switch (channels) {
833 case 1:
834 venc.type = OMAP_DSS_VENC_TYPE_COMPOSITE;
835 break;
836 case 2:
837 venc.type = OMAP_DSS_VENC_TYPE_SVIDEO;
838 break;
839 default:
840 dev_err(&pdev->dev, "bad channel propert '%d'\n", channels);
841 r = -EINVAL;
842 goto err;
843 }
844
845 of_node_put(ep);
846
847 return 0;
848 err:
849 of_node_put(ep);
850
851 return 0;
852 }
853
854 /* VENC HW IP initialisation */
omap_venchw_probe(struct platform_device * pdev)855 static int omap_venchw_probe(struct platform_device *pdev)
856 {
857 u8 rev_id;
858 struct resource *venc_mem;
859 int r;
860
861 venc.pdev = pdev;
862
863 mutex_init(&venc.venc_lock);
864
865 venc.wss_data = 0;
866
867 venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0);
868 if (!venc_mem) {
869 DSSERR("can't get IORESOURCE_MEM VENC\n");
870 return -EINVAL;
871 }
872
873 venc.base = devm_ioremap(&pdev->dev, venc_mem->start,
874 resource_size(venc_mem));
875 if (!venc.base) {
876 DSSERR("can't ioremap VENC\n");
877 return -ENOMEM;
878 }
879
880 r = venc_get_clocks(pdev);
881 if (r)
882 return r;
883
884 pm_runtime_enable(&pdev->dev);
885
886 r = venc_runtime_get();
887 if (r)
888 goto err_runtime_get;
889
890 rev_id = (u8)(venc_read_reg(VENC_REV_ID) & 0xff);
891 dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id);
892
893 venc_runtime_put();
894
895 if (pdev->dev.of_node) {
896 r = venc_probe_of(pdev);
897 if (r) {
898 DSSERR("Invalid DT data\n");
899 goto err_probe_of;
900 }
901 }
902
903 dss_debugfs_create_file("venc", venc_dump_regs);
904
905 venc_init_output(pdev);
906
907 return 0;
908
909 err_probe_of:
910 err_runtime_get:
911 pm_runtime_disable(&pdev->dev);
912 return r;
913 }
914
omap_venchw_remove(struct platform_device * pdev)915 static int __exit omap_venchw_remove(struct platform_device *pdev)
916 {
917 venc_uninit_output(pdev);
918
919 pm_runtime_disable(&pdev->dev);
920
921 return 0;
922 }
923
venc_runtime_suspend(struct device * dev)924 static int venc_runtime_suspend(struct device *dev)
925 {
926 if (venc.tv_dac_clk)
927 clk_disable_unprepare(venc.tv_dac_clk);
928
929 dispc_runtime_put();
930
931 return 0;
932 }
933
venc_runtime_resume(struct device * dev)934 static int venc_runtime_resume(struct device *dev)
935 {
936 int r;
937
938 r = dispc_runtime_get();
939 if (r < 0)
940 return r;
941
942 if (venc.tv_dac_clk)
943 clk_prepare_enable(venc.tv_dac_clk);
944
945 return 0;
946 }
947
948 static const struct dev_pm_ops venc_pm_ops = {
949 .runtime_suspend = venc_runtime_suspend,
950 .runtime_resume = venc_runtime_resume,
951 };
952
953
954 static const struct of_device_id venc_of_match[] = {
955 { .compatible = "ti,omap2-venc", },
956 { .compatible = "ti,omap3-venc", },
957 { .compatible = "ti,omap4-venc", },
958 {},
959 };
960
961 static struct platform_driver omap_venchw_driver = {
962 .probe = omap_venchw_probe,
963 .remove = __exit_p(omap_venchw_remove),
964 .driver = {
965 .name = "omapdss_venc",
966 .owner = THIS_MODULE,
967 .pm = &venc_pm_ops,
968 .of_match_table = venc_of_match,
969 .suppress_bind_attrs = true,
970 },
971 };
972
venc_init_platform_driver(void)973 int __init venc_init_platform_driver(void)
974 {
975 return platform_driver_register(&omap_venchw_driver);
976 }
977
venc_uninit_platform_driver(void)978 void __exit venc_uninit_platform_driver(void)
979 {
980 platform_driver_unregister(&omap_venchw_driver);
981 }
982