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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / gpu / drm / omapdrm / dss / venc.c
blob596a297d58139f1f186bc93dd99293ed50967e62
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2009 Nokia Corporation
4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 *
6 * VENC settings from TI's DSS driver
7 */
8
9 #define DSS_SUBSYS_NAME "VENC"
10
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/clk.h>
14 #include <linux/err.h>
15 #include <linux/io.h>
16 #include <linux/mutex.h>
17 #include <linux/completion.h>
18 #include <linux/delay.h>
19 #include <linux/string.h>
20 #include <linux/seq_file.h>
21 #include <linux/platform_device.h>
22 #include <linux/regulator/consumer.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/of.h>
25 #include <linux/of_graph.h>
26 #include <linux/component.h>
27 #include <linux/sys_soc.h>
28
29 #include "omapdss.h"
30 #include "dss.h"
31
32 /* Venc registers */
33 #define VENC_REV_ID 0x00
34 #define VENC_STATUS 0x04
35 #define VENC_F_CONTROL 0x08
36 #define VENC_VIDOUT_CTRL 0x10
37 #define VENC_SYNC_CTRL 0x14
38 #define VENC_LLEN 0x1C
39 #define VENC_FLENS 0x20
40 #define VENC_HFLTR_CTRL 0x24
41 #define VENC_CC_CARR_WSS_CARR 0x28
42 #define VENC_C_PHASE 0x2C
43 #define VENC_GAIN_U 0x30
44 #define VENC_GAIN_V 0x34
45 #define VENC_GAIN_Y 0x38
46 #define VENC_BLACK_LEVEL 0x3C
47 #define VENC_BLANK_LEVEL 0x40
48 #define VENC_X_COLOR 0x44
49 #define VENC_M_CONTROL 0x48
50 #define VENC_BSTAMP_WSS_DATA 0x4C
51 #define VENC_S_CARR 0x50
52 #define VENC_LINE21 0x54
53 #define VENC_LN_SEL 0x58
54 #define VENC_L21__WC_CTL 0x5C
55 #define VENC_HTRIGGER_VTRIGGER 0x60
56 #define VENC_SAVID__EAVID 0x64
57 #define VENC_FLEN__FAL 0x68
58 #define VENC_LAL__PHASE_RESET 0x6C
59 #define VENC_HS_INT_START_STOP_X 0x70
60 #define VENC_HS_EXT_START_STOP_X 0x74
61 #define VENC_VS_INT_START_X 0x78
62 #define VENC_VS_INT_STOP_X__VS_INT_START_Y 0x7C
63 #define VENC_VS_INT_STOP_Y__VS_EXT_START_X 0x80
64 #define VENC_VS_EXT_STOP_X__VS_EXT_START_Y 0x84
65 #define VENC_VS_EXT_STOP_Y 0x88
66 #define VENC_AVID_START_STOP_X 0x90
67 #define VENC_AVID_START_STOP_Y 0x94
68 #define VENC_FID_INT_START_X__FID_INT_START_Y 0xA0
69 #define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X 0xA4
70 #define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y 0xA8
71 #define VENC_TVDETGP_INT_START_STOP_X 0xB0
72 #define VENC_TVDETGP_INT_START_STOP_Y 0xB4
73 #define VENC_GEN_CTRL 0xB8
74 #define VENC_OUTPUT_CONTROL 0xC4
75 #define VENC_OUTPUT_TEST 0xC8
76 #define VENC_DAC_B__DAC_C 0xC8
77
78 struct venc_config {
79 u32 f_control;
80 u32 vidout_ctrl;
81 u32 sync_ctrl;
82 u32 llen;
83 u32 flens;
84 u32 hfltr_ctrl;
85 u32 cc_carr_wss_carr;
86 u32 c_phase;
87 u32 gain_u;
88 u32 gain_v;
89 u32 gain_y;
90 u32 black_level;
91 u32 blank_level;
92 u32 x_color;
93 u32 m_control;
94 u32 bstamp_wss_data;
95 u32 s_carr;
96 u32 line21;
97 u32 ln_sel;
98 u32 l21__wc_ctl;
99 u32 htrigger_vtrigger;
100 u32 savid__eavid;
101 u32 flen__fal;
102 u32 lal__phase_reset;
103 u32 hs_int_start_stop_x;
104 u32 hs_ext_start_stop_x;
105 u32 vs_int_start_x;
106 u32 vs_int_stop_x__vs_int_start_y;
107 u32 vs_int_stop_y__vs_ext_start_x;
108 u32 vs_ext_stop_x__vs_ext_start_y;
109 u32 vs_ext_stop_y;
110 u32 avid_start_stop_x;
111 u32 avid_start_stop_y;
112 u32 fid_int_start_x__fid_int_start_y;
113 u32 fid_int_offset_y__fid_ext_start_x;
114 u32 fid_ext_start_y__fid_ext_offset_y;
115 u32 tvdetgp_int_start_stop_x;
116 u32 tvdetgp_int_start_stop_y;
117 u32 gen_ctrl;
118 };
119
120 /* from TRM */
121 static const struct venc_config venc_config_pal_trm = {
122 .f_control = 0,
123 .vidout_ctrl = 1,
124 .sync_ctrl = 0x40,
125 .llen = 0x35F, /* 863 */
126 .flens = 0x270, /* 624 */
127 .hfltr_ctrl = 0,
128 .cc_carr_wss_carr = 0x2F7225ED,
129 .c_phase = 0,
130 .gain_u = 0x111,
131 .gain_v = 0x181,
132 .gain_y = 0x140,
133 .black_level = 0x3B,
134 .blank_level = 0x3B,
135 .x_color = 0x7,
136 .m_control = 0x2,
137 .bstamp_wss_data = 0x3F,
138 .s_carr = 0x2A098ACB,
139 .line21 = 0,
140 .ln_sel = 0x01290015,
141 .l21__wc_ctl = 0x0000F603,
142 .htrigger_vtrigger = 0,
143
144 .savid__eavid = 0x06A70108,
145 .flen__fal = 0x00180270,
146 .lal__phase_reset = 0x00040135,
147 .hs_int_start_stop_x = 0x00880358,
148 .hs_ext_start_stop_x = 0x000F035F,
149 .vs_int_start_x = 0x01A70000,
150 .vs_int_stop_x__vs_int_start_y = 0x000001A7,
151 .vs_int_stop_y__vs_ext_start_x = 0x01AF0000,
152 .vs_ext_stop_x__vs_ext_start_y = 0x000101AF,
153 .vs_ext_stop_y = 0x00000025,
154 .avid_start_stop_x = 0x03530083,
155 .avid_start_stop_y = 0x026C002E,
156 .fid_int_start_x__fid_int_start_y = 0x0001008A,
157 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
158 .fid_ext_start_y__fid_ext_offset_y = 0x01380001,
159
160 .tvdetgp_int_start_stop_x = 0x00140001,
161 .tvdetgp_int_start_stop_y = 0x00010001,
162 .gen_ctrl = 0x00FF0000,
163 };
164
165 /* from TRM */
166 static const struct venc_config venc_config_ntsc_trm = {
167 .f_control = 0,
168 .vidout_ctrl = 1,
169 .sync_ctrl = 0x8040,
170 .llen = 0x359,
171 .flens = 0x20C,
172 .hfltr_ctrl = 0,
173 .cc_carr_wss_carr = 0x043F2631,
174 .c_phase = 0,
175 .gain_u = 0x102,
176 .gain_v = 0x16C,
177 .gain_y = 0x12F,
178 .black_level = 0x43,
179 .blank_level = 0x38,
180 .x_color = 0x7,
181 .m_control = 0x1,
182 .bstamp_wss_data = 0x38,
183 .s_carr = 0x21F07C1F,
184 .line21 = 0,
185 .ln_sel = 0x01310011,
186 .l21__wc_ctl = 0x0000F003,
187 .htrigger_vtrigger = 0,
188
189 .savid__eavid = 0x069300F4,
190 .flen__fal = 0x0016020C,
191 .lal__phase_reset = 0x00060107,
192 .hs_int_start_stop_x = 0x008E0350,
193 .hs_ext_start_stop_x = 0x000F0359,
194 .vs_int_start_x = 0x01A00000,
195 .vs_int_stop_x__vs_int_start_y = 0x020701A0,
196 .vs_int_stop_y__vs_ext_start_x = 0x01AC0024,
197 .vs_ext_stop_x__vs_ext_start_y = 0x020D01AC,
198 .vs_ext_stop_y = 0x00000006,
199 .avid_start_stop_x = 0x03480078,
200 .avid_start_stop_y = 0x02060024,
201 .fid_int_start_x__fid_int_start_y = 0x0001008A,
202 .fid_int_offset_y__fid_ext_start_x = 0x01AC0106,
203 .fid_ext_start_y__fid_ext_offset_y = 0x01060006,
204
205 .tvdetgp_int_start_stop_x = 0x00140001,
206 .tvdetgp_int_start_stop_y = 0x00010001,
207 .gen_ctrl = 0x00F90000,
208 };
209
210 static const struct venc_config venc_config_pal_bdghi = {
211 .f_control = 0,
212 .vidout_ctrl = 0,
213 .sync_ctrl = 0,
214 .hfltr_ctrl = 0,
215 .x_color = 0,
216 .line21 = 0,
217 .ln_sel = 21,
218 .htrigger_vtrigger = 0,
219 .tvdetgp_int_start_stop_x = 0x00140001,
220 .tvdetgp_int_start_stop_y = 0x00010001,
221 .gen_ctrl = 0x00FB0000,
222
223 .llen = 864-1,
224 .flens = 625-1,
225 .cc_carr_wss_carr = 0x2F7625ED,
226 .c_phase = 0xDF,
227 .gain_u = 0x111,
228 .gain_v = 0x181,
229 .gain_y = 0x140,
230 .black_level = 0x3e,
231 .blank_level = 0x3e,
232 .m_control = 0<<2 | 1<<1,
233 .bstamp_wss_data = 0x42,
234 .s_carr = 0x2a098acb,
235 .l21__wc_ctl = 0<<13 | 0x16<<8 | 0<<0,
236 .savid__eavid = 0x06A70108,
237 .flen__fal = 23<<16 | 624<<0,
238 .lal__phase_reset = 2<<17 | 310<<0,
239 .hs_int_start_stop_x = 0x00920358,
240 .hs_ext_start_stop_x = 0x000F035F,
241 .vs_int_start_x = 0x1a7<<16,
242 .vs_int_stop_x__vs_int_start_y = 0x000601A7,
243 .vs_int_stop_y__vs_ext_start_x = 0x01AF0036,
244 .vs_ext_stop_x__vs_ext_start_y = 0x27101af,
245 .vs_ext_stop_y = 0x05,
246 .avid_start_stop_x = 0x03530082,
247 .avid_start_stop_y = 0x0270002E,
248 .fid_int_start_x__fid_int_start_y = 0x0005008A,
249 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
250 .fid_ext_start_y__fid_ext_offset_y = 0x01380005,
251 };
252
253 enum venc_videomode {
254 VENC_MODE_UNKNOWN,
255 VENC_MODE_PAL,
256 VENC_MODE_NTSC,
257 };
258
259 static const struct drm_display_mode omap_dss_pal_mode = {
260 .hdisplay = 720,
261 .hsync_start = 732,
262 .hsync_end = 796,
263 .htotal = 864,
264 .vdisplay = 574,
265 .vsync_start = 579,
266 .vsync_end = 584,
267 .vtotal = 625,
268 .clock = 13500,
269
270 .flags = DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_NHSYNC |
271 DRM_MODE_FLAG_NVSYNC,
272 };
273
274 static const struct drm_display_mode omap_dss_ntsc_mode = {
275 .hdisplay = 720,
276 .hsync_start = 736,
277 .hsync_end = 800,
278 .htotal = 858,
279 .vdisplay = 482,
280 .vsync_start = 488,
281 .vsync_end = 494,
282 .vtotal = 525,
283 .clock = 13500,
284
285 .flags = DRM_MODE_FLAG_INTERLACE | DRM_MODE_FLAG_NHSYNC |
286 DRM_MODE_FLAG_NVSYNC,
287 };
288
289 struct venc_device {
290 struct platform_device *pdev;
291 void __iomem *base;
292 struct mutex venc_lock;
293 struct regulator *vdda_dac_reg;
294 struct dss_device *dss;
295
296 struct dss_debugfs_entry *debugfs;
297
298 struct clk *tv_dac_clk;
299
300 const struct venc_config *config;
301 enum omap_dss_venc_type type;
302 bool invert_polarity;
303 bool requires_tv_dac_clk;
304
305 struct omap_dss_device output;
306 };
307
308 #define dssdev_to_venc(dssdev) container_of(dssdev, struct venc_device, output)
309
310 static inline void venc_write_reg(struct venc_device *venc, int idx, u32 val)
311 {
312 __raw_writel(val, venc->base + idx);
313 }
314
315 static inline u32 venc_read_reg(struct venc_device *venc, int idx)
316 {
317 u32 l = __raw_readl(venc->base + idx);
318 return l;
319 }
320
321 static void venc_write_config(struct venc_device *venc,
322 const struct venc_config *config)
323 {
324 DSSDBG("write venc conf\n");
325
326 venc_write_reg(venc, VENC_LLEN, config->llen);
327 venc_write_reg(venc, VENC_FLENS, config->flens);
328 venc_write_reg(venc, VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
329 venc_write_reg(venc, VENC_C_PHASE, config->c_phase);
330 venc_write_reg(venc, VENC_GAIN_U, config->gain_u);
331 venc_write_reg(venc, VENC_GAIN_V, config->gain_v);
332 venc_write_reg(venc, VENC_GAIN_Y, config->gain_y);
333 venc_write_reg(venc, VENC_BLACK_LEVEL, config->black_level);
334 venc_write_reg(venc, VENC_BLANK_LEVEL, config->blank_level);
335 venc_write_reg(venc, VENC_M_CONTROL, config->m_control);
336 venc_write_reg(venc, VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data);
337 venc_write_reg(venc, VENC_S_CARR, config->s_carr);
338 venc_write_reg(venc, VENC_L21__WC_CTL, config->l21__wc_ctl);
339 venc_write_reg(venc, VENC_SAVID__EAVID, config->savid__eavid);
340 venc_write_reg(venc, VENC_FLEN__FAL, config->flen__fal);
341 venc_write_reg(venc, VENC_LAL__PHASE_RESET, config->lal__phase_reset);
342 venc_write_reg(venc, VENC_HS_INT_START_STOP_X,
343 config->hs_int_start_stop_x);
344 venc_write_reg(venc, VENC_HS_EXT_START_STOP_X,
345 config->hs_ext_start_stop_x);
346 venc_write_reg(venc, VENC_VS_INT_START_X, config->vs_int_start_x);
347 venc_write_reg(venc, VENC_VS_INT_STOP_X__VS_INT_START_Y,
348 config->vs_int_stop_x__vs_int_start_y);
349 venc_write_reg(venc, VENC_VS_INT_STOP_Y__VS_EXT_START_X,
350 config->vs_int_stop_y__vs_ext_start_x);
351 venc_write_reg(venc, VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
352 config->vs_ext_stop_x__vs_ext_start_y);
353 venc_write_reg(venc, VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
354 venc_write_reg(venc, VENC_AVID_START_STOP_X, config->avid_start_stop_x);
355 venc_write_reg(venc, VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
356 venc_write_reg(venc, VENC_FID_INT_START_X__FID_INT_START_Y,
357 config->fid_int_start_x__fid_int_start_y);
358 venc_write_reg(venc, VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
359 config->fid_int_offset_y__fid_ext_start_x);
360 venc_write_reg(venc, VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
361 config->fid_ext_start_y__fid_ext_offset_y);
362
363 venc_write_reg(venc, VENC_DAC_B__DAC_C,
364 venc_read_reg(venc, VENC_DAC_B__DAC_C));
365 venc_write_reg(venc, VENC_VIDOUT_CTRL, config->vidout_ctrl);
366 venc_write_reg(venc, VENC_HFLTR_CTRL, config->hfltr_ctrl);
367 venc_write_reg(venc, VENC_X_COLOR, config->x_color);
368 venc_write_reg(venc, VENC_LINE21, config->line21);
369 venc_write_reg(venc, VENC_LN_SEL, config->ln_sel);
370 venc_write_reg(venc, VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
371 venc_write_reg(venc, VENC_TVDETGP_INT_START_STOP_X,
372 config->tvdetgp_int_start_stop_x);
373 venc_write_reg(venc, VENC_TVDETGP_INT_START_STOP_Y,
374 config->tvdetgp_int_start_stop_y);
375 venc_write_reg(venc, VENC_GEN_CTRL, config->gen_ctrl);
376 venc_write_reg(venc, VENC_F_CONTROL, config->f_control);
377 venc_write_reg(venc, VENC_SYNC_CTRL, config->sync_ctrl);
378 }
379
380 static void venc_reset(struct venc_device *venc)
381 {
382 int t = 1000;
383
384 venc_write_reg(venc, VENC_F_CONTROL, 1<<8);
385 while (venc_read_reg(venc, VENC_F_CONTROL) & (1<<8)) {
386 if (--t == 0) {
387 DSSERR("Failed to reset venc\n");
388 return;
389 }
390 }
391
392 #ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
393 /* the magical sleep that makes things work */
394 /* XXX more info? What bug this circumvents? */
395 msleep(20);
396 #endif
397 }
398
399 static int venc_runtime_get(struct venc_device *venc)
400 {
401 int r;
402
403 DSSDBG("venc_runtime_get\n");
404
405 r = pm_runtime_get_sync(&venc->pdev->dev);
406 WARN_ON(r < 0);
407 return r < 0 ? r : 0;
408 }
409
410 static void venc_runtime_put(struct venc_device *venc)
411 {
412 int r;
413
414 DSSDBG("venc_runtime_put\n");
415
416 r = pm_runtime_put_sync(&venc->pdev->dev);
417 WARN_ON(r < 0 && r != -ENOSYS);
418 }
419
420 static int venc_power_on(struct venc_device *venc)
421 {
422 u32 l;
423 int r;
424
425 r = venc_runtime_get(venc);
426 if (r)
427 goto err0;
428
429 venc_reset(venc);
430 venc_write_config(venc, venc->config);
431
432 dss_set_venc_output(venc->dss, venc->type);
433 dss_set_dac_pwrdn_bgz(venc->dss, 1);
434
435 l = 0;
436
437 if (venc->type == OMAP_DSS_VENC_TYPE_COMPOSITE)
438 l |= 1 << 1;
439 else /* S-Video */
440 l |= (1 << 0) | (1 << 2);
441
442 if (venc->invert_polarity == false)
443 l |= 1 << 3;
444
445 venc_write_reg(venc, VENC_OUTPUT_CONTROL, l);
446
447 r = regulator_enable(venc->vdda_dac_reg);
448 if (r)
449 goto err1;
450
451 r = dss_mgr_enable(&venc->output);
452 if (r)
453 goto err2;
454
455 return 0;
456
457 err2:
458 regulator_disable(venc->vdda_dac_reg);
459 err1:
460 venc_write_reg(venc, VENC_OUTPUT_CONTROL, 0);
461 dss_set_dac_pwrdn_bgz(venc->dss, 0);
462
463 venc_runtime_put(venc);
464 err0:
465 return r;
466 }
467
468 static void venc_power_off(struct venc_device *venc)
469 {
470 venc_write_reg(venc, VENC_OUTPUT_CONTROL, 0);
471 dss_set_dac_pwrdn_bgz(venc->dss, 0);
472
473 dss_mgr_disable(&venc->output);
474
475 regulator_disable(venc->vdda_dac_reg);
476
477 venc_runtime_put(venc);
478 }
479
480 static void venc_display_enable(struct omap_dss_device *dssdev)
481 {
482 struct venc_device *venc = dssdev_to_venc(dssdev);
483
484 DSSDBG("venc_display_enable\n");
485
486 mutex_lock(&venc->venc_lock);
487
488 venc_power_on(venc);
489
490 mutex_unlock(&venc->venc_lock);
491 }
492
493 static void venc_display_disable(struct omap_dss_device *dssdev)
494 {
495 struct venc_device *venc = dssdev_to_venc(dssdev);
496
497 DSSDBG("venc_display_disable\n");
498
499 mutex_lock(&venc->venc_lock);
500
501 venc_power_off(venc);
502
503 mutex_unlock(&venc->venc_lock);
504 }
505
506 static int venc_get_modes(struct omap_dss_device *dssdev,
507 struct drm_connector *connector)
508 {
509 static const struct drm_display_mode *modes[] = {
510 &omap_dss_pal_mode,
511 &omap_dss_ntsc_mode,
512 };
513 unsigned int i;
514
515 for (i = 0; i < ARRAY_SIZE(modes); ++i) {
516 struct drm_display_mode *mode;
517
518 mode = drm_mode_duplicate(connector->dev, modes[i]);
519 if (!mode)
520 return i;
521
522 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
523 drm_mode_set_name(mode);
524 drm_mode_probed_add(connector, mode);
525 }
526
527 return ARRAY_SIZE(modes);
528 }
529
530 static enum venc_videomode venc_get_videomode(const struct drm_display_mode *mode)
531 {
532 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
533 return VENC_MODE_UNKNOWN;
534
535 if (mode->clock == omap_dss_pal_mode.clock &&
536 mode->hdisplay == omap_dss_pal_mode.hdisplay &&
537 mode->vdisplay == omap_dss_pal_mode.vdisplay)
538 return VENC_MODE_PAL;
539
540 if (mode->clock == omap_dss_ntsc_mode.clock &&
541 mode->hdisplay == omap_dss_ntsc_mode.hdisplay &&
542 mode->vdisplay == omap_dss_ntsc_mode.vdisplay)
543 return VENC_MODE_NTSC;
544
545 return VENC_MODE_UNKNOWN;
546 }
547
548 static void venc_set_timings(struct omap_dss_device *dssdev,
549 const struct drm_display_mode *mode)
550 {
551 struct venc_device *venc = dssdev_to_venc(dssdev);
552 enum venc_videomode venc_mode = venc_get_videomode(mode);
553
554 DSSDBG("venc_set_timings\n");
555
556 mutex_lock(&venc->venc_lock);
557
558 switch (venc_mode) {
559 default:
560 WARN_ON_ONCE(1);
561 /* Fall-through */
562 case VENC_MODE_PAL:
563 venc->config = &venc_config_pal_trm;
564 break;
565
566 case VENC_MODE_NTSC:
567 venc->config = &venc_config_ntsc_trm;
568 break;
569 }
570
571 dispc_set_tv_pclk(venc->dss->dispc, 13500000);
572
573 mutex_unlock(&venc->venc_lock);
574 }
575
576 static int venc_check_timings(struct omap_dss_device *dssdev,
577 struct drm_display_mode *mode)
578 {
579 DSSDBG("venc_check_timings\n");
580
581 switch (venc_get_videomode(mode)) {
582 case VENC_MODE_PAL:
583 drm_mode_copy(mode, &omap_dss_pal_mode);
584 break;
585
586 case VENC_MODE_NTSC:
587 drm_mode_copy(mode, &omap_dss_ntsc_mode);
588 break;
589
590 default:
591 return -EINVAL;
592 }
593
594 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
595 drm_mode_set_name(mode);
596 return 0;
597 }
598
599 static int venc_dump_regs(struct seq_file *s, void *p)
600 {
601 struct venc_device *venc = s->private;
602
603 #define DUMPREG(venc, r) \
604 seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(venc, r))
605
606 if (venc_runtime_get(venc))
607 return 0;
608
609 DUMPREG(venc, VENC_F_CONTROL);
610 DUMPREG(venc, VENC_VIDOUT_CTRL);
611 DUMPREG(venc, VENC_SYNC_CTRL);
612 DUMPREG(venc, VENC_LLEN);
613 DUMPREG(venc, VENC_FLENS);
614 DUMPREG(venc, VENC_HFLTR_CTRL);
615 DUMPREG(venc, VENC_CC_CARR_WSS_CARR);
616 DUMPREG(venc, VENC_C_PHASE);
617 DUMPREG(venc, VENC_GAIN_U);
618 DUMPREG(venc, VENC_GAIN_V);
619 DUMPREG(venc, VENC_GAIN_Y);
620 DUMPREG(venc, VENC_BLACK_LEVEL);
621 DUMPREG(venc, VENC_BLANK_LEVEL);
622 DUMPREG(venc, VENC_X_COLOR);
623 DUMPREG(venc, VENC_M_CONTROL);
624 DUMPREG(venc, VENC_BSTAMP_WSS_DATA);
625 DUMPREG(venc, VENC_S_CARR);
626 DUMPREG(venc, VENC_LINE21);
627 DUMPREG(venc, VENC_LN_SEL);
628 DUMPREG(venc, VENC_L21__WC_CTL);
629 DUMPREG(venc, VENC_HTRIGGER_VTRIGGER);
630 DUMPREG(venc, VENC_SAVID__EAVID);
631 DUMPREG(venc, VENC_FLEN__FAL);
632 DUMPREG(venc, VENC_LAL__PHASE_RESET);
633 DUMPREG(venc, VENC_HS_INT_START_STOP_X);
634 DUMPREG(venc, VENC_HS_EXT_START_STOP_X);
635 DUMPREG(venc, VENC_VS_INT_START_X);
636 DUMPREG(venc, VENC_VS_INT_STOP_X__VS_INT_START_Y);
637 DUMPREG(venc, VENC_VS_INT_STOP_Y__VS_EXT_START_X);
638 DUMPREG(venc, VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
639 DUMPREG(venc, VENC_VS_EXT_STOP_Y);
640 DUMPREG(venc, VENC_AVID_START_STOP_X);
641 DUMPREG(venc, VENC_AVID_START_STOP_Y);
642 DUMPREG(venc, VENC_FID_INT_START_X__FID_INT_START_Y);
643 DUMPREG(venc, VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
644 DUMPREG(venc, VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
645 DUMPREG(venc, VENC_TVDETGP_INT_START_STOP_X);
646 DUMPREG(venc, VENC_TVDETGP_INT_START_STOP_Y);
647 DUMPREG(venc, VENC_GEN_CTRL);
648 DUMPREG(venc, VENC_OUTPUT_CONTROL);
649 DUMPREG(venc, VENC_OUTPUT_TEST);
650
651 venc_runtime_put(venc);
652
653 #undef DUMPREG
654 return 0;
655 }
656
657 static int venc_get_clocks(struct venc_device *venc)
658 {
659 struct clk *clk;
660
661 if (venc->requires_tv_dac_clk) {
662 clk = devm_clk_get(&venc->pdev->dev, "tv_dac_clk");
663 if (IS_ERR(clk)) {
664 DSSERR("can't get tv_dac_clk\n");
665 return PTR_ERR(clk);
666 }
667 } else {
668 clk = NULL;
669 }
670
671 venc->tv_dac_clk = clk;
672
673 return 0;
674 }
675
676 static int venc_connect(struct omap_dss_device *src,
677 struct omap_dss_device *dst)
678 {
679 return omapdss_device_connect(dst->dss, dst, dst->next);
680 }
681
682 static void venc_disconnect(struct omap_dss_device *src,
683 struct omap_dss_device *dst)
684 {
685 omapdss_device_disconnect(dst, dst->next);
686 }
687
688 static const struct omap_dss_device_ops venc_ops = {
689 .connect = venc_connect,
690 .disconnect = venc_disconnect,
691
692 .enable = venc_display_enable,
693 .disable = venc_display_disable,
694
695 .check_timings = venc_check_timings,
696 .set_timings = venc_set_timings,
697
698 .get_modes = venc_get_modes,
699 };
700
701 /* -----------------------------------------------------------------------------
702 * Component Bind & Unbind
703 */
704
705 static int venc_bind(struct device *dev, struct device *master, void *data)
706 {
707 struct dss_device *dss = dss_get_device(master);
708 struct venc_device *venc = dev_get_drvdata(dev);
709 u8 rev_id;
710 int r;
711
712 venc->dss = dss;
713
714 r = venc_runtime_get(venc);
715 if (r)
716 return r;
717
718 rev_id = (u8)(venc_read_reg(venc, VENC_REV_ID) & 0xff);
719 dev_dbg(dev, "OMAP VENC rev %d\n", rev_id);
720
721 venc_runtime_put(venc);
722
723 venc->debugfs = dss_debugfs_create_file(dss, "venc", venc_dump_regs,
724 venc);
725
726 return 0;
727 }
728
729 static void venc_unbind(struct device *dev, struct device *master, void *data)
730 {
731 struct venc_device *venc = dev_get_drvdata(dev);
732
733 dss_debugfs_remove_file(venc->debugfs);
734 }
735
736 static const struct component_ops venc_component_ops = {
737 .bind = venc_bind,
738 .unbind = venc_unbind,
739 };
740
741 /* -----------------------------------------------------------------------------
742 * Probe & Remove, Suspend & Resume
743 */
744
745 static int venc_init_output(struct venc_device *venc)
746 {
747 struct omap_dss_device *out = &venc->output;
748 int r;
749
750 out->dev = &venc->pdev->dev;
751 out->id = OMAP_DSS_OUTPUT_VENC;
752 out->type = OMAP_DISPLAY_TYPE_VENC;
753 out->name = "venc.0";
754 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
755 out->ops = &venc_ops;
756 out->owner = THIS_MODULE;
757 out->of_ports = BIT(0);
758 out->ops_flags = OMAP_DSS_DEVICE_OP_MODES;
759
760 r = omapdss_device_init_output(out);
761 if (r < 0)
762 return r;
763
764 omapdss_device_register(out);
765
766 return 0;
767 }
768
769 static void venc_uninit_output(struct venc_device *venc)
770 {
771 omapdss_device_unregister(&venc->output);
772 omapdss_device_cleanup_output(&venc->output);
773 }
774
775 static int venc_probe_of(struct venc_device *venc)
776 {
777 struct device_node *node = venc->pdev->dev.of_node;
778 struct device_node *ep;
779 u32 channels;
780 int r;
781
782 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
783 if (!ep)
784 return 0;
785
786 venc->invert_polarity = of_property_read_bool(ep, "ti,invert-polarity");
787
788 r = of_property_read_u32(ep, "ti,channels", &channels);
789 if (r) {
790 dev_err(&venc->pdev->dev,
791 "failed to read property 'ti,channels': %d\n", r);
792 goto err;
793 }
794
795 switch (channels) {
796 case 1:
797 venc->type = OMAP_DSS_VENC_TYPE_COMPOSITE;
798 break;
799 case 2:
800 venc->type = OMAP_DSS_VENC_TYPE_SVIDEO;
801 break;
802 default:
803 dev_err(&venc->pdev->dev, "bad channel propert '%d'\n",
804 channels);
805 r = -EINVAL;
806 goto err;
807 }
808
809 of_node_put(ep);
810
811 return 0;
812
813 err:
814 of_node_put(ep);
815 return r;
816 }
817
818 static const struct soc_device_attribute venc_soc_devices[] = {
819 { .machine = "OMAP3[45]*" },
820 { .machine = "AM35*" },
821 { /* sentinel */ }
822 };
823
824 static int venc_probe(struct platform_device *pdev)
825 {
826 struct venc_device *venc;
827 struct resource *venc_mem;
828 int r;
829
830 venc = kzalloc(sizeof(*venc), GFP_KERNEL);
831 if (!venc)
832 return -ENOMEM;
833
834 venc->pdev = pdev;
835
836 platform_set_drvdata(pdev, venc);
837
838 /* The OMAP34xx, OMAP35xx and AM35xx VENC require the TV DAC clock. */
839 if (soc_device_match(venc_soc_devices))
840 venc->requires_tv_dac_clk = true;
841
842 mutex_init(&venc->venc_lock);
843
844 venc->config = &venc_config_pal_trm;
845
846 venc_mem = platform_get_resource(venc->pdev, IORESOURCE_MEM, 0);
847 venc->base = devm_ioremap_resource(&pdev->dev, venc_mem);
848 if (IS_ERR(venc->base)) {
849 r = PTR_ERR(venc->base);
850 goto err_free;
851 }
852
853 venc->vdda_dac_reg = devm_regulator_get(&pdev->dev, "vdda");
854 if (IS_ERR(venc->vdda_dac_reg)) {
855 r = PTR_ERR(venc->vdda_dac_reg);
856 if (r != -EPROBE_DEFER)
857 DSSERR("can't get VDDA_DAC regulator\n");
858 goto err_free;
859 }
860
861 r = venc_get_clocks(venc);
862 if (r)
863 goto err_free;
864
865 r = venc_probe_of(venc);
866 if (r)
867 goto err_free;
868
869 pm_runtime_enable(&pdev->dev);
870
871 r = venc_init_output(venc);
872 if (r)
873 goto err_pm_disable;
874
875 r = component_add(&pdev->dev, &venc_component_ops);
876 if (r)
877 goto err_uninit_output;
878
879 return 0;
880
881 err_uninit_output:
882 venc_uninit_output(venc);
883 err_pm_disable:
884 pm_runtime_disable(&pdev->dev);
885 err_free:
886 kfree(venc);
887 return r;
888 }
889
890 static int venc_remove(struct platform_device *pdev)
891 {
892 struct venc_device *venc = platform_get_drvdata(pdev);
893
894 component_del(&pdev->dev, &venc_component_ops);
895
896 venc_uninit_output(venc);
897
898 pm_runtime_disable(&pdev->dev);
899
900 kfree(venc);
901 return 0;
902 }
903
904 static int venc_runtime_suspend(struct device *dev)
905 {
906 struct venc_device *venc = dev_get_drvdata(dev);
907
908 if (venc->tv_dac_clk)
909 clk_disable_unprepare(venc->tv_dac_clk);
910
911 return 0;
912 }
913
914 static int venc_runtime_resume(struct device *dev)
915 {
916 struct venc_device *venc = dev_get_drvdata(dev);
917
918 if (venc->tv_dac_clk)
919 clk_prepare_enable(venc->tv_dac_clk);
920
921 return 0;
922 }
923
924 static const struct dev_pm_ops venc_pm_ops = {
925 .runtime_suspend = venc_runtime_suspend,
926 .runtime_resume = venc_runtime_resume,
927 };
928
929 static const struct of_device_id venc_of_match[] = {
930 { .compatible = "ti,omap2-venc", },
931 { .compatible = "ti,omap3-venc", },
932 { .compatible = "ti,omap4-venc", },
933 {},
934 };
935
936 struct platform_driver omap_venchw_driver = {
937 .probe = venc_probe,
938 .remove = venc_remove,
939 .driver = {
940 .name = "omapdss_venc",
941 .pm = &venc_pm_ops,
942 .of_match_table = venc_of_match,
943 .suppress_bind_attrs = true,
944 },
945 };
Linux with added FPC-III support