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[deliverable/linux.git] / drivers / gpu / ipu-v3 / ipu-common.c
1 /*
2 * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>
3 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15 #include <linux/module.h>
16 #include <linux/export.h>
17 #include <linux/types.h>
18 #include <linux/reset.h>
19 #include <linux/platform_device.h>
20 #include <linux/err.h>
21 #include <linux/spinlock.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
24 #include <linux/io.h>
25 #include <linux/clk.h>
26 #include <linux/list.h>
27 #include <linux/irq.h>
28 #include <linux/irqchip/chained_irq.h>
29 #include <linux/irqdomain.h>
30 #include <linux/of_device.h>
31 #include <linux/of_graph.h>
32
33 #include <drm/drm_fourcc.h>
34
35 #include <video/imx-ipu-v3.h>
36 #include "ipu-prv.h"
37
38 static inline u32 ipu_cm_read(struct ipu_soc *ipu, unsigned offset)
39 {
40 return readl(ipu->cm_reg + offset);
41 }
42
43 static inline void ipu_cm_write(struct ipu_soc *ipu, u32 value, unsigned offset)
44 {
45 writel(value, ipu->cm_reg + offset);
46 }
47
48 void ipu_srm_dp_sync_update(struct ipu_soc *ipu)
49 {
50 u32 val;
51
52 val = ipu_cm_read(ipu, IPU_SRM_PRI2);
53 val |= 0x8;
54 ipu_cm_write(ipu, val, IPU_SRM_PRI2);
55 }
56 EXPORT_SYMBOL_GPL(ipu_srm_dp_sync_update);
57
58 enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
59 {
60 switch (drm_fourcc) {
61 case DRM_FORMAT_ARGB1555:
62 case DRM_FORMAT_ABGR1555:
63 case DRM_FORMAT_RGBA5551:
64 case DRM_FORMAT_BGRA5551:
65 case DRM_FORMAT_RGB565:
66 case DRM_FORMAT_BGR565:
67 case DRM_FORMAT_RGB888:
68 case DRM_FORMAT_BGR888:
69 case DRM_FORMAT_ARGB4444:
70 case DRM_FORMAT_XRGB8888:
71 case DRM_FORMAT_XBGR8888:
72 case DRM_FORMAT_RGBX8888:
73 case DRM_FORMAT_BGRX8888:
74 case DRM_FORMAT_ARGB8888:
75 case DRM_FORMAT_ABGR8888:
76 case DRM_FORMAT_RGBA8888:
77 case DRM_FORMAT_BGRA8888:
78 return IPUV3_COLORSPACE_RGB;
79 case DRM_FORMAT_YUYV:
80 case DRM_FORMAT_UYVY:
81 case DRM_FORMAT_YUV420:
82 case DRM_FORMAT_YVU420:
83 case DRM_FORMAT_YUV422:
84 case DRM_FORMAT_YVU422:
85 case DRM_FORMAT_NV12:
86 case DRM_FORMAT_NV21:
87 case DRM_FORMAT_NV16:
88 case DRM_FORMAT_NV61:
89 return IPUV3_COLORSPACE_YUV;
90 default:
91 return IPUV3_COLORSPACE_UNKNOWN;
92 }
93 }
94 EXPORT_SYMBOL_GPL(ipu_drm_fourcc_to_colorspace);
95
96 enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
97 {
98 switch (pixelformat) {
99 case V4L2_PIX_FMT_YUV420:
100 case V4L2_PIX_FMT_YVU420:
101 case V4L2_PIX_FMT_YUV422P:
102 case V4L2_PIX_FMT_UYVY:
103 case V4L2_PIX_FMT_YUYV:
104 case V4L2_PIX_FMT_NV12:
105 case V4L2_PIX_FMT_NV21:
106 case V4L2_PIX_FMT_NV16:
107 case V4L2_PIX_FMT_NV61:
108 return IPUV3_COLORSPACE_YUV;
109 case V4L2_PIX_FMT_RGB32:
110 case V4L2_PIX_FMT_BGR32:
111 case V4L2_PIX_FMT_RGB24:
112 case V4L2_PIX_FMT_BGR24:
113 case V4L2_PIX_FMT_RGB565:
114 return IPUV3_COLORSPACE_RGB;
115 default:
116 return IPUV3_COLORSPACE_UNKNOWN;
117 }
118 }
119 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace);
120
121 bool ipu_pixelformat_is_planar(u32 pixelformat)
122 {
123 switch (pixelformat) {
124 case V4L2_PIX_FMT_YUV420:
125 case V4L2_PIX_FMT_YVU420:
126 case V4L2_PIX_FMT_YUV422P:
127 case V4L2_PIX_FMT_NV12:
128 case V4L2_PIX_FMT_NV21:
129 case V4L2_PIX_FMT_NV16:
130 case V4L2_PIX_FMT_NV61:
131 return true;
132 }
133
134 return false;
135 }
136 EXPORT_SYMBOL_GPL(ipu_pixelformat_is_planar);
137
138 enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code)
139 {
140 switch (mbus_code & 0xf000) {
141 case 0x1000:
142 return IPUV3_COLORSPACE_RGB;
143 case 0x2000:
144 return IPUV3_COLORSPACE_YUV;
145 default:
146 return IPUV3_COLORSPACE_UNKNOWN;
147 }
148 }
149 EXPORT_SYMBOL_GPL(ipu_mbus_code_to_colorspace);
150
151 int ipu_stride_to_bytes(u32 pixel_stride, u32 pixelformat)
152 {
153 switch (pixelformat) {
154 case V4L2_PIX_FMT_YUV420:
155 case V4L2_PIX_FMT_YVU420:
156 case V4L2_PIX_FMT_YUV422P:
157 case V4L2_PIX_FMT_NV12:
158 case V4L2_PIX_FMT_NV21:
159 case V4L2_PIX_FMT_NV16:
160 case V4L2_PIX_FMT_NV61:
161 /*
162 * for the planar YUV formats, the stride passed to
163 * cpmem must be the stride in bytes of the Y plane.
164 * And all the planar YUV formats have an 8-bit
165 * Y component.
166 */
167 return (8 * pixel_stride) >> 3;
168 case V4L2_PIX_FMT_RGB565:
169 case V4L2_PIX_FMT_YUYV:
170 case V4L2_PIX_FMT_UYVY:
171 return (16 * pixel_stride) >> 3;
172 case V4L2_PIX_FMT_BGR24:
173 case V4L2_PIX_FMT_RGB24:
174 return (24 * pixel_stride) >> 3;
175 case V4L2_PIX_FMT_BGR32:
176 case V4L2_PIX_FMT_RGB32:
177 return (32 * pixel_stride) >> 3;
178 default:
179 break;
180 }
181
182 return -EINVAL;
183 }
184 EXPORT_SYMBOL_GPL(ipu_stride_to_bytes);
185
186 int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,
187 bool hflip, bool vflip)
188 {
189 u32 r90, vf, hf;
190
191 switch (degrees) {
192 case 0:
193 vf = hf = r90 = 0;
194 break;
195 case 90:
196 vf = hf = 0;
197 r90 = 1;
198 break;
199 case 180:
200 vf = hf = 1;
201 r90 = 0;
202 break;
203 case 270:
204 vf = hf = r90 = 1;
205 break;
206 default:
207 return -EINVAL;
208 }
209
210 hf ^= (u32)hflip;
211 vf ^= (u32)vflip;
212
213 *mode = (enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf);
214 return 0;
215 }
216 EXPORT_SYMBOL_GPL(ipu_degrees_to_rot_mode);
217
218 int ipu_rot_mode_to_degrees(int *degrees, enum ipu_rotate_mode mode,
219 bool hflip, bool vflip)
220 {
221 u32 r90, vf, hf;
222
223 r90 = ((u32)mode >> 2) & 0x1;
224 hf = ((u32)mode >> 1) & 0x1;
225 vf = ((u32)mode >> 0) & 0x1;
226 hf ^= (u32)hflip;
227 vf ^= (u32)vflip;
228
229 switch ((enum ipu_rotate_mode)((r90 << 2) | (hf << 1) | vf)) {
230 case IPU_ROTATE_NONE:
231 *degrees = 0;
232 break;
233 case IPU_ROTATE_90_RIGHT:
234 *degrees = 90;
235 break;
236 case IPU_ROTATE_180:
237 *degrees = 180;
238 break;
239 case IPU_ROTATE_90_LEFT:
240 *degrees = 270;
241 break;
242 default:
243 return -EINVAL;
244 }
245
246 return 0;
247 }
248 EXPORT_SYMBOL_GPL(ipu_rot_mode_to_degrees);
249
250 struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num)
251 {
252 struct ipuv3_channel *channel;
253
254 dev_dbg(ipu->dev, "%s %d\n", __func__, num);
255
256 if (num > 63)
257 return ERR_PTR(-ENODEV);
258
259 mutex_lock(&ipu->channel_lock);
260
261 channel = &ipu->channel[num];
262
263 if (channel->busy) {
264 channel = ERR_PTR(-EBUSY);
265 goto out;
266 }
267
268 channel->busy = true;
269 channel->num = num;
270
271 out:
272 mutex_unlock(&ipu->channel_lock);
273
274 return channel;
275 }
276 EXPORT_SYMBOL_GPL(ipu_idmac_get);
277
278 void ipu_idmac_put(struct ipuv3_channel *channel)
279 {
280 struct ipu_soc *ipu = channel->ipu;
281
282 dev_dbg(ipu->dev, "%s %d\n", __func__, channel->num);
283
284 mutex_lock(&ipu->channel_lock);
285
286 channel->busy = false;
287
288 mutex_unlock(&ipu->channel_lock);
289 }
290 EXPORT_SYMBOL_GPL(ipu_idmac_put);
291
292 #define idma_mask(ch) (1 << ((ch) & 0x1f))
293
294 /*
295 * This is an undocumented feature, a write one to a channel bit in
296 * IPU_CHA_CUR_BUF and IPU_CHA_TRIPLE_CUR_BUF will reset the channel's
297 * internal current buffer pointer so that transfers start from buffer
298 * 0 on the next channel enable (that's the theory anyway, the imx6 TRM
299 * only says these are read-only registers). This operation is required
300 * for channel linking to work correctly, for instance video capture
301 * pipelines that carry out image rotations will fail after the first
302 * streaming unless this function is called for each channel before
303 * re-enabling the channels.
304 */
305 static void __ipu_idmac_reset_current_buffer(struct ipuv3_channel *channel)
306 {
307 struct ipu_soc *ipu = channel->ipu;
308 unsigned int chno = channel->num;
309
310 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_CUR_BUF(chno));
311 }
312
313 void ipu_idmac_set_double_buffer(struct ipuv3_channel *channel,
314 bool doublebuffer)
315 {
316 struct ipu_soc *ipu = channel->ipu;
317 unsigned long flags;
318 u32 reg;
319
320 spin_lock_irqsave(&ipu->lock, flags);
321
322 reg = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
323 if (doublebuffer)
324 reg |= idma_mask(channel->num);
325 else
326 reg &= ~idma_mask(channel->num);
327 ipu_cm_write(ipu, reg, IPU_CHA_DB_MODE_SEL(channel->num));
328
329 __ipu_idmac_reset_current_buffer(channel);
330
331 spin_unlock_irqrestore(&ipu->lock, flags);
332 }
333 EXPORT_SYMBOL_GPL(ipu_idmac_set_double_buffer);
334
335 static const struct {
336 int chnum;
337 u32 reg;
338 int shift;
339 } idmac_lock_en_info[] = {
340 { .chnum = 5, .reg = IDMAC_CH_LOCK_EN_1, .shift = 0, },
341 { .chnum = 11, .reg = IDMAC_CH_LOCK_EN_1, .shift = 2, },
342 { .chnum = 12, .reg = IDMAC_CH_LOCK_EN_1, .shift = 4, },
343 { .chnum = 14, .reg = IDMAC_CH_LOCK_EN_1, .shift = 6, },
344 { .chnum = 15, .reg = IDMAC_CH_LOCK_EN_1, .shift = 8, },
345 { .chnum = 20, .reg = IDMAC_CH_LOCK_EN_1, .shift = 10, },
346 { .chnum = 21, .reg = IDMAC_CH_LOCK_EN_1, .shift = 12, },
347 { .chnum = 22, .reg = IDMAC_CH_LOCK_EN_1, .shift = 14, },
348 { .chnum = 23, .reg = IDMAC_CH_LOCK_EN_1, .shift = 16, },
349 { .chnum = 27, .reg = IDMAC_CH_LOCK_EN_1, .shift = 18, },
350 { .chnum = 28, .reg = IDMAC_CH_LOCK_EN_1, .shift = 20, },
351 { .chnum = 45, .reg = IDMAC_CH_LOCK_EN_2, .shift = 0, },
352 { .chnum = 46, .reg = IDMAC_CH_LOCK_EN_2, .shift = 2, },
353 { .chnum = 47, .reg = IDMAC_CH_LOCK_EN_2, .shift = 4, },
354 { .chnum = 48, .reg = IDMAC_CH_LOCK_EN_2, .shift = 6, },
355 { .chnum = 49, .reg = IDMAC_CH_LOCK_EN_2, .shift = 8, },
356 { .chnum = 50, .reg = IDMAC_CH_LOCK_EN_2, .shift = 10, },
357 };
358
359 int ipu_idmac_lock_enable(struct ipuv3_channel *channel, int num_bursts)
360 {
361 struct ipu_soc *ipu = channel->ipu;
362 unsigned long flags;
363 u32 bursts, regval;
364 int i;
365
366 switch (num_bursts) {
367 case 0:
368 case 1:
369 bursts = 0x00; /* locking disabled */
370 break;
371 case 2:
372 bursts = 0x01;
373 break;
374 case 4:
375 bursts = 0x02;
376 break;
377 case 8:
378 bursts = 0x03;
379 break;
380 default:
381 return -EINVAL;
382 }
383
384 for (i = 0; i < ARRAY_SIZE(idmac_lock_en_info); i++) {
385 if (channel->num == idmac_lock_en_info[i].chnum)
386 break;
387 }
388 if (i >= ARRAY_SIZE(idmac_lock_en_info))
389 return -EINVAL;
390
391 spin_lock_irqsave(&ipu->lock, flags);
392
393 regval = ipu_idmac_read(ipu, idmac_lock_en_info[i].reg);
394 regval &= ~(0x03 << idmac_lock_en_info[i].shift);
395 regval |= (bursts << idmac_lock_en_info[i].shift);
396 ipu_idmac_write(ipu, regval, idmac_lock_en_info[i].reg);
397
398 spin_unlock_irqrestore(&ipu->lock, flags);
399
400 return 0;
401 }
402 EXPORT_SYMBOL_GPL(ipu_idmac_lock_enable);
403
404 int ipu_module_enable(struct ipu_soc *ipu, u32 mask)
405 {
406 unsigned long lock_flags;
407 u32 val;
408
409 spin_lock_irqsave(&ipu->lock, lock_flags);
410
411 val = ipu_cm_read(ipu, IPU_DISP_GEN);
412
413 if (mask & IPU_CONF_DI0_EN)
414 val |= IPU_DI0_COUNTER_RELEASE;
415 if (mask & IPU_CONF_DI1_EN)
416 val |= IPU_DI1_COUNTER_RELEASE;
417
418 ipu_cm_write(ipu, val, IPU_DISP_GEN);
419
420 val = ipu_cm_read(ipu, IPU_CONF);
421 val |= mask;
422 ipu_cm_write(ipu, val, IPU_CONF);
423
424 spin_unlock_irqrestore(&ipu->lock, lock_flags);
425
426 return 0;
427 }
428 EXPORT_SYMBOL_GPL(ipu_module_enable);
429
430 int ipu_module_disable(struct ipu_soc *ipu, u32 mask)
431 {
432 unsigned long lock_flags;
433 u32 val;
434
435 spin_lock_irqsave(&ipu->lock, lock_flags);
436
437 val = ipu_cm_read(ipu, IPU_CONF);
438 val &= ~mask;
439 ipu_cm_write(ipu, val, IPU_CONF);
440
441 val = ipu_cm_read(ipu, IPU_DISP_GEN);
442
443 if (mask & IPU_CONF_DI0_EN)
444 val &= ~IPU_DI0_COUNTER_RELEASE;
445 if (mask & IPU_CONF_DI1_EN)
446 val &= ~IPU_DI1_COUNTER_RELEASE;
447
448 ipu_cm_write(ipu, val, IPU_DISP_GEN);
449
450 spin_unlock_irqrestore(&ipu->lock, lock_flags);
451
452 return 0;
453 }
454 EXPORT_SYMBOL_GPL(ipu_module_disable);
455
456 int ipu_idmac_get_current_buffer(struct ipuv3_channel *channel)
457 {
458 struct ipu_soc *ipu = channel->ipu;
459 unsigned int chno = channel->num;
460
461 return (ipu_cm_read(ipu, IPU_CHA_CUR_BUF(chno)) & idma_mask(chno)) ? 1 : 0;
462 }
463 EXPORT_SYMBOL_GPL(ipu_idmac_get_current_buffer);
464
465 bool ipu_idmac_buffer_is_ready(struct ipuv3_channel *channel, u32 buf_num)
466 {
467 struct ipu_soc *ipu = channel->ipu;
468 unsigned long flags;
469 u32 reg = 0;
470
471 spin_lock_irqsave(&ipu->lock, flags);
472 switch (buf_num) {
473 case 0:
474 reg = ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num));
475 break;
476 case 1:
477 reg = ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num));
478 break;
479 case 2:
480 reg = ipu_cm_read(ipu, IPU_CHA_BUF2_RDY(channel->num));
481 break;
482 }
483 spin_unlock_irqrestore(&ipu->lock, flags);
484
485 return ((reg & idma_mask(channel->num)) != 0);
486 }
487 EXPORT_SYMBOL_GPL(ipu_idmac_buffer_is_ready);
488
489 void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num)
490 {
491 struct ipu_soc *ipu = channel->ipu;
492 unsigned int chno = channel->num;
493 unsigned long flags;
494
495 spin_lock_irqsave(&ipu->lock, flags);
496
497 /* Mark buffer as ready. */
498 if (buf_num == 0)
499 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno));
500 else
501 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno));
502
503 spin_unlock_irqrestore(&ipu->lock, flags);
504 }
505 EXPORT_SYMBOL_GPL(ipu_idmac_select_buffer);
506
507 void ipu_idmac_clear_buffer(struct ipuv3_channel *channel, u32 buf_num)
508 {
509 struct ipu_soc *ipu = channel->ipu;
510 unsigned int chno = channel->num;
511 unsigned long flags;
512
513 spin_lock_irqsave(&ipu->lock, flags);
514
515 ipu_cm_write(ipu, 0xF0300000, IPU_GPR); /* write one to clear */
516 switch (buf_num) {
517 case 0:
518 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno));
519 break;
520 case 1:
521 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno));
522 break;
523 case 2:
524 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF2_RDY(chno));
525 break;
526 default:
527 break;
528 }
529 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */
530
531 spin_unlock_irqrestore(&ipu->lock, flags);
532 }
533 EXPORT_SYMBOL_GPL(ipu_idmac_clear_buffer);
534
535 int ipu_idmac_enable_channel(struct ipuv3_channel *channel)
536 {
537 struct ipu_soc *ipu = channel->ipu;
538 u32 val;
539 unsigned long flags;
540
541 spin_lock_irqsave(&ipu->lock, flags);
542
543 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
544 val |= idma_mask(channel->num);
545 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
546
547 spin_unlock_irqrestore(&ipu->lock, flags);
548
549 return 0;
550 }
551 EXPORT_SYMBOL_GPL(ipu_idmac_enable_channel);
552
553 bool ipu_idmac_channel_busy(struct ipu_soc *ipu, unsigned int chno)
554 {
555 return (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(chno)) & idma_mask(chno));
556 }
557 EXPORT_SYMBOL_GPL(ipu_idmac_channel_busy);
558
559 int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms)
560 {
561 struct ipu_soc *ipu = channel->ipu;
562 unsigned long timeout;
563
564 timeout = jiffies + msecs_to_jiffies(ms);
565 while (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(channel->num)) &
566 idma_mask(channel->num)) {
567 if (time_after(jiffies, timeout))
568 return -ETIMEDOUT;
569 cpu_relax();
570 }
571
572 return 0;
573 }
574 EXPORT_SYMBOL_GPL(ipu_idmac_wait_busy);
575
576 int ipu_wait_interrupt(struct ipu_soc *ipu, int irq, int ms)
577 {
578 unsigned long timeout;
579
580 timeout = jiffies + msecs_to_jiffies(ms);
581 ipu_cm_write(ipu, BIT(irq % 32), IPU_INT_STAT(irq / 32));
582 while (!(ipu_cm_read(ipu, IPU_INT_STAT(irq / 32) & BIT(irq % 32)))) {
583 if (time_after(jiffies, timeout))
584 return -ETIMEDOUT;
585 cpu_relax();
586 }
587
588 return 0;
589 }
590 EXPORT_SYMBOL_GPL(ipu_wait_interrupt);
591
592 int ipu_idmac_disable_channel(struct ipuv3_channel *channel)
593 {
594 struct ipu_soc *ipu = channel->ipu;
595 u32 val;
596 unsigned long flags;
597
598 spin_lock_irqsave(&ipu->lock, flags);
599
600 /* Disable DMA channel(s) */
601 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
602 val &= ~idma_mask(channel->num);
603 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
604
605 __ipu_idmac_reset_current_buffer(channel);
606
607 /* Set channel buffers NOT to be ready */
608 ipu_cm_write(ipu, 0xf0000000, IPU_GPR); /* write one to clear */
609
610 if (ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num)) &
611 idma_mask(channel->num)) {
612 ipu_cm_write(ipu, idma_mask(channel->num),
613 IPU_CHA_BUF0_RDY(channel->num));
614 }
615
616 if (ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num)) &
617 idma_mask(channel->num)) {
618 ipu_cm_write(ipu, idma_mask(channel->num),
619 IPU_CHA_BUF1_RDY(channel->num));
620 }
621
622 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */
623
624 /* Reset the double buffer */
625 val = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
626 val &= ~idma_mask(channel->num);
627 ipu_cm_write(ipu, val, IPU_CHA_DB_MODE_SEL(channel->num));
628
629 spin_unlock_irqrestore(&ipu->lock, flags);
630
631 return 0;
632 }
633 EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel);
634
635 /*
636 * The imx6 rev. D TRM says that enabling the WM feature will increase
637 * a channel's priority. Refer to Table 36-8 Calculated priority value.
638 * The sub-module that is the sink or source for the channel must enable
639 * watermark signal for this to take effect (SMFC_WM for instance).
640 */
641 void ipu_idmac_enable_watermark(struct ipuv3_channel *channel, bool enable)
642 {
643 struct ipu_soc *ipu = channel->ipu;
644 unsigned long flags;
645 u32 val;
646
647 spin_lock_irqsave(&ipu->lock, flags);
648
649 val = ipu_idmac_read(ipu, IDMAC_WM_EN(channel->num));
650 if (enable)
651 val |= 1 << (channel->num % 32);
652 else
653 val &= ~(1 << (channel->num % 32));
654 ipu_idmac_write(ipu, val, IDMAC_WM_EN(channel->num));
655
656 spin_unlock_irqrestore(&ipu->lock, flags);
657 }
658 EXPORT_SYMBOL_GPL(ipu_idmac_enable_watermark);
659
660 static int ipu_memory_reset(struct ipu_soc *ipu)
661 {
662 unsigned long timeout;
663
664 ipu_cm_write(ipu, 0x807FFFFF, IPU_MEM_RST);
665
666 timeout = jiffies + msecs_to_jiffies(1000);
667 while (ipu_cm_read(ipu, IPU_MEM_RST) & 0x80000000) {
668 if (time_after(jiffies, timeout))
669 return -ETIME;
670 cpu_relax();
671 }
672
673 return 0;
674 }
675
676 /*
677 * Set the source mux for the given CSI. Selects either parallel or
678 * MIPI CSI2 sources.
679 */
680 void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2)
681 {
682 unsigned long flags;
683 u32 val, mask;
684
685 mask = (csi_id == 1) ? IPU_CONF_CSI1_DATA_SOURCE :
686 IPU_CONF_CSI0_DATA_SOURCE;
687
688 spin_lock_irqsave(&ipu->lock, flags);
689
690 val = ipu_cm_read(ipu, IPU_CONF);
691 if (mipi_csi2)
692 val |= mask;
693 else
694 val &= ~mask;
695 ipu_cm_write(ipu, val, IPU_CONF);
696
697 spin_unlock_irqrestore(&ipu->lock, flags);
698 }
699 EXPORT_SYMBOL_GPL(ipu_set_csi_src_mux);
700
701 /*
702 * Set the source mux for the IC. Selects either CSI[01] or the VDI.
703 */
704 void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi)
705 {
706 unsigned long flags;
707 u32 val;
708
709 spin_lock_irqsave(&ipu->lock, flags);
710
711 val = ipu_cm_read(ipu, IPU_CONF);
712 if (vdi) {
713 val |= IPU_CONF_IC_INPUT;
714 } else {
715 val &= ~IPU_CONF_IC_INPUT;
716 if (csi_id == 1)
717 val |= IPU_CONF_CSI_SEL;
718 else
719 val &= ~IPU_CONF_CSI_SEL;
720 }
721 ipu_cm_write(ipu, val, IPU_CONF);
722
723 spin_unlock_irqrestore(&ipu->lock, flags);
724 }
725 EXPORT_SYMBOL_GPL(ipu_set_ic_src_mux);
726
727 struct ipu_devtype {
728 const char *name;
729 unsigned long cm_ofs;
730 unsigned long cpmem_ofs;
731 unsigned long srm_ofs;
732 unsigned long tpm_ofs;
733 unsigned long csi0_ofs;
734 unsigned long csi1_ofs;
735 unsigned long ic_ofs;
736 unsigned long disp0_ofs;
737 unsigned long disp1_ofs;
738 unsigned long dc_tmpl_ofs;
739 unsigned long vdi_ofs;
740 enum ipuv3_type type;
741 };
742
743 static struct ipu_devtype ipu_type_imx51 = {
744 .name = "IPUv3EX",
745 .cm_ofs = 0x1e000000,
746 .cpmem_ofs = 0x1f000000,
747 .srm_ofs = 0x1f040000,
748 .tpm_ofs = 0x1f060000,
749 .csi0_ofs = 0x1f030000,
750 .csi1_ofs = 0x1f038000,
751 .ic_ofs = 0x1e020000,
752 .disp0_ofs = 0x1e040000,
753 .disp1_ofs = 0x1e048000,
754 .dc_tmpl_ofs = 0x1f080000,
755 .vdi_ofs = 0x1e068000,
756 .type = IPUV3EX,
757 };
758
759 static struct ipu_devtype ipu_type_imx53 = {
760 .name = "IPUv3M",
761 .cm_ofs = 0x06000000,
762 .cpmem_ofs = 0x07000000,
763 .srm_ofs = 0x07040000,
764 .tpm_ofs = 0x07060000,
765 .csi0_ofs = 0x07030000,
766 .csi1_ofs = 0x07038000,
767 .ic_ofs = 0x06020000,
768 .disp0_ofs = 0x06040000,
769 .disp1_ofs = 0x06048000,
770 .dc_tmpl_ofs = 0x07080000,
771 .vdi_ofs = 0x06068000,
772 .type = IPUV3M,
773 };
774
775 static struct ipu_devtype ipu_type_imx6q = {
776 .name = "IPUv3H",
777 .cm_ofs = 0x00200000,
778 .cpmem_ofs = 0x00300000,
779 .srm_ofs = 0x00340000,
780 .tpm_ofs = 0x00360000,
781 .csi0_ofs = 0x00230000,
782 .csi1_ofs = 0x00238000,
783 .ic_ofs = 0x00220000,
784 .disp0_ofs = 0x00240000,
785 .disp1_ofs = 0x00248000,
786 .dc_tmpl_ofs = 0x00380000,
787 .vdi_ofs = 0x00268000,
788 .type = IPUV3H,
789 };
790
791 static const struct of_device_id imx_ipu_dt_ids[] = {
792 { .compatible = "fsl,imx51-ipu", .data = &ipu_type_imx51, },
793 { .compatible = "fsl,imx53-ipu", .data = &ipu_type_imx53, },
794 { .compatible = "fsl,imx6q-ipu", .data = &ipu_type_imx6q, },
795 { /* sentinel */ }
796 };
797 MODULE_DEVICE_TABLE(of, imx_ipu_dt_ids);
798
799 static int ipu_submodules_init(struct ipu_soc *ipu,
800 struct platform_device *pdev, unsigned long ipu_base,
801 struct clk *ipu_clk)
802 {
803 char *unit;
804 int ret;
805 struct device *dev = &pdev->dev;
806 const struct ipu_devtype *devtype = ipu->devtype;
807
808 ret = ipu_cpmem_init(ipu, dev, ipu_base + devtype->cpmem_ofs);
809 if (ret) {
810 unit = "cpmem";
811 goto err_cpmem;
812 }
813
814 ret = ipu_csi_init(ipu, dev, 0, ipu_base + devtype->csi0_ofs,
815 IPU_CONF_CSI0_EN, ipu_clk);
816 if (ret) {
817 unit = "csi0";
818 goto err_csi_0;
819 }
820
821 ret = ipu_csi_init(ipu, dev, 1, ipu_base + devtype->csi1_ofs,
822 IPU_CONF_CSI1_EN, ipu_clk);
823 if (ret) {
824 unit = "csi1";
825 goto err_csi_1;
826 }
827
828 ret = ipu_ic_init(ipu, dev,
829 ipu_base + devtype->ic_ofs,
830 ipu_base + devtype->tpm_ofs);
831 if (ret) {
832 unit = "ic";
833 goto err_ic;
834 }
835
836 ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs,
837 IPU_CONF_DI0_EN, ipu_clk);
838 if (ret) {
839 unit = "di0";
840 goto err_di_0;
841 }
842
843 ret = ipu_di_init(ipu, dev, 1, ipu_base + devtype->disp1_ofs,
844 IPU_CONF_DI1_EN, ipu_clk);
845 if (ret) {
846 unit = "di1";
847 goto err_di_1;
848 }
849
850 ret = ipu_dc_init(ipu, dev, ipu_base + devtype->cm_ofs +
851 IPU_CM_DC_REG_OFS, ipu_base + devtype->dc_tmpl_ofs);
852 if (ret) {
853 unit = "dc_template";
854 goto err_dc;
855 }
856
857 ret = ipu_dmfc_init(ipu, dev, ipu_base +
858 devtype->cm_ofs + IPU_CM_DMFC_REG_OFS, ipu_clk);
859 if (ret) {
860 unit = "dmfc";
861 goto err_dmfc;
862 }
863
864 ret = ipu_dp_init(ipu, dev, ipu_base + devtype->srm_ofs);
865 if (ret) {
866 unit = "dp";
867 goto err_dp;
868 }
869
870 ret = ipu_smfc_init(ipu, dev, ipu_base +
871 devtype->cm_ofs + IPU_CM_SMFC_REG_OFS);
872 if (ret) {
873 unit = "smfc";
874 goto err_smfc;
875 }
876
877 return 0;
878
879 err_smfc:
880 ipu_dp_exit(ipu);
881 err_dp:
882 ipu_dmfc_exit(ipu);
883 err_dmfc:
884 ipu_dc_exit(ipu);
885 err_dc:
886 ipu_di_exit(ipu, 1);
887 err_di_1:
888 ipu_di_exit(ipu, 0);
889 err_di_0:
890 ipu_ic_exit(ipu);
891 err_ic:
892 ipu_csi_exit(ipu, 1);
893 err_csi_1:
894 ipu_csi_exit(ipu, 0);
895 err_csi_0:
896 ipu_cpmem_exit(ipu);
897 err_cpmem:
898 dev_err(&pdev->dev, "init %s failed with %d\n", unit, ret);
899 return ret;
900 }
901
902 static void ipu_irq_handle(struct ipu_soc *ipu, const int *regs, int num_regs)
903 {
904 unsigned long status;
905 int i, bit, irq;
906
907 for (i = 0; i < num_regs; i++) {
908
909 status = ipu_cm_read(ipu, IPU_INT_STAT(regs[i]));
910 status &= ipu_cm_read(ipu, IPU_INT_CTRL(regs[i]));
911
912 for_each_set_bit(bit, &status, 32) {
913 irq = irq_linear_revmap(ipu->domain,
914 regs[i] * 32 + bit);
915 if (irq)
916 generic_handle_irq(irq);
917 }
918 }
919 }
920
921 static void ipu_irq_handler(struct irq_desc *desc)
922 {
923 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
924 struct irq_chip *chip = irq_desc_get_chip(desc);
925 const int int_reg[] = { 0, 1, 2, 3, 10, 11, 12, 13, 14};
926
927 chained_irq_enter(chip, desc);
928
929 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
930
931 chained_irq_exit(chip, desc);
932 }
933
934 static void ipu_err_irq_handler(struct irq_desc *desc)
935 {
936 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
937 struct irq_chip *chip = irq_desc_get_chip(desc);
938 const int int_reg[] = { 4, 5, 8, 9};
939
940 chained_irq_enter(chip, desc);
941
942 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
943
944 chained_irq_exit(chip, desc);
945 }
946
947 int ipu_map_irq(struct ipu_soc *ipu, int irq)
948 {
949 int virq;
950
951 virq = irq_linear_revmap(ipu->domain, irq);
952 if (!virq)
953 virq = irq_create_mapping(ipu->domain, irq);
954
955 return virq;
956 }
957 EXPORT_SYMBOL_GPL(ipu_map_irq);
958
959 int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel,
960 enum ipu_channel_irq irq_type)
961 {
962 return ipu_map_irq(ipu, irq_type + channel->num);
963 }
964 EXPORT_SYMBOL_GPL(ipu_idmac_channel_irq);
965
966 static void ipu_submodules_exit(struct ipu_soc *ipu)
967 {
968 ipu_smfc_exit(ipu);
969 ipu_dp_exit(ipu);
970 ipu_dmfc_exit(ipu);
971 ipu_dc_exit(ipu);
972 ipu_di_exit(ipu, 1);
973 ipu_di_exit(ipu, 0);
974 ipu_ic_exit(ipu);
975 ipu_csi_exit(ipu, 1);
976 ipu_csi_exit(ipu, 0);
977 ipu_cpmem_exit(ipu);
978 }
979
980 static int platform_remove_devices_fn(struct device *dev, void *unused)
981 {
982 struct platform_device *pdev = to_platform_device(dev);
983
984 platform_device_unregister(pdev);
985
986 return 0;
987 }
988
989 static void platform_device_unregister_children(struct platform_device *pdev)
990 {
991 device_for_each_child(&pdev->dev, NULL, platform_remove_devices_fn);
992 }
993
994 struct ipu_platform_reg {
995 struct ipu_client_platformdata pdata;
996 const char *name;
997 };
998
999 /* These must be in the order of the corresponding device tree port nodes */
1000 static const struct ipu_platform_reg client_reg[] = {
1001 {
1002 .pdata = {
1003 .csi = 0,
1004 .dma[0] = IPUV3_CHANNEL_CSI0,
1005 .dma[1] = -EINVAL,
1006 },
1007 .name = "imx-ipuv3-camera",
1008 }, {
1009 .pdata = {
1010 .csi = 1,
1011 .dma[0] = IPUV3_CHANNEL_CSI1,
1012 .dma[1] = -EINVAL,
1013 },
1014 .name = "imx-ipuv3-camera",
1015 }, {
1016 .pdata = {
1017 .di = 0,
1018 .dc = 5,
1019 .dp = IPU_DP_FLOW_SYNC_BG,
1020 .dma[0] = IPUV3_CHANNEL_MEM_BG_SYNC,
1021 .dma[1] = IPUV3_CHANNEL_MEM_FG_SYNC,
1022 },
1023 .name = "imx-ipuv3-crtc",
1024 }, {
1025 .pdata = {
1026 .di = 1,
1027 .dc = 1,
1028 .dp = -EINVAL,
1029 .dma[0] = IPUV3_CHANNEL_MEM_DC_SYNC,
1030 .dma[1] = -EINVAL,
1031 },
1032 .name = "imx-ipuv3-crtc",
1033 },
1034 };
1035
1036 static DEFINE_MUTEX(ipu_client_id_mutex);
1037 static int ipu_client_id;
1038
1039 static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
1040 {
1041 struct device *dev = ipu->dev;
1042 unsigned i;
1043 int id, ret;
1044
1045 mutex_lock(&ipu_client_id_mutex);
1046 id = ipu_client_id;
1047 ipu_client_id += ARRAY_SIZE(client_reg);
1048 mutex_unlock(&ipu_client_id_mutex);
1049
1050 for (i = 0; i < ARRAY_SIZE(client_reg); i++) {
1051 const struct ipu_platform_reg *reg = &client_reg[i];
1052 struct platform_device *pdev;
1053 struct device_node *of_node;
1054
1055 /* Associate subdevice with the corresponding port node */
1056 of_node = of_graph_get_port_by_id(dev->of_node, i);
1057 if (!of_node) {
1058 dev_info(dev,
1059 "no port@%d node in %s, not using %s%d\n",
1060 i, dev->of_node->full_name,
1061 (i / 2) ? "DI" : "CSI", i % 2);
1062 continue;
1063 }
1064
1065 pdev = platform_device_alloc(reg->name, id++);
1066 if (!pdev) {
1067 ret = -ENOMEM;
1068 goto err_register;
1069 }
1070
1071 pdev->dev.of_node = of_node;
1072 pdev->dev.parent = dev;
1073
1074 ret = platform_device_add_data(pdev, &reg->pdata,
1075 sizeof(reg->pdata));
1076 if (!ret)
1077 ret = platform_device_add(pdev);
1078 if (ret) {
1079 platform_device_put(pdev);
1080 goto err_register;
1081 }
1082 }
1083
1084 return 0;
1085
1086 err_register:
1087 platform_device_unregister_children(to_platform_device(dev));
1088
1089 return ret;
1090 }
1091
1092
1093 static int ipu_irq_init(struct ipu_soc *ipu)
1094 {
1095 struct irq_chip_generic *gc;
1096 struct irq_chip_type *ct;
1097 unsigned long unused[IPU_NUM_IRQS / 32] = {
1098 0x400100d0, 0xffe000fd,
1099 0x400100d0, 0xffe000fd,
1100 0x400100d0, 0xffe000fd,
1101 0x4077ffff, 0xffe7e1fd,
1102 0x23fffffe, 0x8880fff0,
1103 0xf98fe7d0, 0xfff81fff,
1104 0x400100d0, 0xffe000fd,
1105 0x00000000,
1106 };
1107 int ret, i;
1108
1109 ipu->domain = irq_domain_add_linear(ipu->dev->of_node, IPU_NUM_IRQS,
1110 &irq_generic_chip_ops, ipu);
1111 if (!ipu->domain) {
1112 dev_err(ipu->dev, "failed to add irq domain\n");
1113 return -ENODEV;
1114 }
1115
1116 ret = irq_alloc_domain_generic_chips(ipu->domain, 32, 1, "IPU",
1117 handle_level_irq, 0, 0, 0);
1118 if (ret < 0) {
1119 dev_err(ipu->dev, "failed to alloc generic irq chips\n");
1120 irq_domain_remove(ipu->domain);
1121 return ret;
1122 }
1123
1124 for (i = 0; i < IPU_NUM_IRQS; i += 32)
1125 ipu_cm_write(ipu, 0, IPU_INT_CTRL(i / 32));
1126
1127 for (i = 0; i < IPU_NUM_IRQS; i += 32) {
1128 gc = irq_get_domain_generic_chip(ipu->domain, i);
1129 gc->reg_base = ipu->cm_reg;
1130 gc->unused = unused[i / 32];
1131 ct = gc->chip_types;
1132 ct->chip.irq_ack = irq_gc_ack_set_bit;
1133 ct->chip.irq_mask = irq_gc_mask_clr_bit;
1134 ct->chip.irq_unmask = irq_gc_mask_set_bit;
1135 ct->regs.ack = IPU_INT_STAT(i / 32);
1136 ct->regs.mask = IPU_INT_CTRL(i / 32);
1137 }
1138
1139 irq_set_chained_handler_and_data(ipu->irq_sync, ipu_irq_handler, ipu);
1140 irq_set_chained_handler_and_data(ipu->irq_err, ipu_err_irq_handler,
1141 ipu);
1142
1143 return 0;
1144 }
1145
1146 static void ipu_irq_exit(struct ipu_soc *ipu)
1147 {
1148 int i, irq;
1149
1150 irq_set_chained_handler_and_data(ipu->irq_err, NULL, NULL);
1151 irq_set_chained_handler_and_data(ipu->irq_sync, NULL, NULL);
1152
1153 /* TODO: remove irq_domain_generic_chips */
1154
1155 for (i = 0; i < IPU_NUM_IRQS; i++) {
1156 irq = irq_linear_revmap(ipu->domain, i);
1157 if (irq)
1158 irq_dispose_mapping(irq);
1159 }
1160
1161 irq_domain_remove(ipu->domain);
1162 }
1163
1164 void ipu_dump(struct ipu_soc *ipu)
1165 {
1166 int i;
1167
1168 dev_dbg(ipu->dev, "IPU_CONF = \t0x%08X\n",
1169 ipu_cm_read(ipu, IPU_CONF));
1170 dev_dbg(ipu->dev, "IDMAC_CONF = \t0x%08X\n",
1171 ipu_idmac_read(ipu, IDMAC_CONF));
1172 dev_dbg(ipu->dev, "IDMAC_CHA_EN1 = \t0x%08X\n",
1173 ipu_idmac_read(ipu, IDMAC_CHA_EN(0)));
1174 dev_dbg(ipu->dev, "IDMAC_CHA_EN2 = \t0x%08X\n",
1175 ipu_idmac_read(ipu, IDMAC_CHA_EN(32)));
1176 dev_dbg(ipu->dev, "IDMAC_CHA_PRI1 = \t0x%08X\n",
1177 ipu_idmac_read(ipu, IDMAC_CHA_PRI(0)));
1178 dev_dbg(ipu->dev, "IDMAC_CHA_PRI2 = \t0x%08X\n",
1179 ipu_idmac_read(ipu, IDMAC_CHA_PRI(32)));
1180 dev_dbg(ipu->dev, "IDMAC_BAND_EN1 = \t0x%08X\n",
1181 ipu_idmac_read(ipu, IDMAC_BAND_EN(0)));
1182 dev_dbg(ipu->dev, "IDMAC_BAND_EN2 = \t0x%08X\n",
1183 ipu_idmac_read(ipu, IDMAC_BAND_EN(32)));
1184 dev_dbg(ipu->dev, "IPU_CHA_DB_MODE_SEL0 = \t0x%08X\n",
1185 ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(0)));
1186 dev_dbg(ipu->dev, "IPU_CHA_DB_MODE_SEL1 = \t0x%08X\n",
1187 ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(32)));
1188 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW1 = \t0x%08X\n",
1189 ipu_cm_read(ipu, IPU_FS_PROC_FLOW1));
1190 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW2 = \t0x%08X\n",
1191 ipu_cm_read(ipu, IPU_FS_PROC_FLOW2));
1192 dev_dbg(ipu->dev, "IPU_FS_PROC_FLOW3 = \t0x%08X\n",
1193 ipu_cm_read(ipu, IPU_FS_PROC_FLOW3));
1194 dev_dbg(ipu->dev, "IPU_FS_DISP_FLOW1 = \t0x%08X\n",
1195 ipu_cm_read(ipu, IPU_FS_DISP_FLOW1));
1196 for (i = 0; i < 15; i++)
1197 dev_dbg(ipu->dev, "IPU_INT_CTRL(%d) = \t%08X\n", i,
1198 ipu_cm_read(ipu, IPU_INT_CTRL(i)));
1199 }
1200 EXPORT_SYMBOL_GPL(ipu_dump);
1201
1202 static int ipu_probe(struct platform_device *pdev)
1203 {
1204 const struct of_device_id *of_id =
1205 of_match_device(imx_ipu_dt_ids, &pdev->dev);
1206 struct ipu_soc *ipu;
1207 struct resource *res;
1208 unsigned long ipu_base;
1209 int i, ret, irq_sync, irq_err;
1210 const struct ipu_devtype *devtype;
1211
1212 devtype = of_id->data;
1213
1214 irq_sync = platform_get_irq(pdev, 0);
1215 irq_err = platform_get_irq(pdev, 1);
1216 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1217
1218 dev_dbg(&pdev->dev, "irq_sync: %d irq_err: %d\n",
1219 irq_sync, irq_err);
1220
1221 if (!res || irq_sync < 0 || irq_err < 0)
1222 return -ENODEV;
1223
1224 ipu_base = res->start;
1225
1226 ipu = devm_kzalloc(&pdev->dev, sizeof(*ipu), GFP_KERNEL);
1227 if (!ipu)
1228 return -ENODEV;
1229
1230 for (i = 0; i < 64; i++)
1231 ipu->channel[i].ipu = ipu;
1232 ipu->devtype = devtype;
1233 ipu->ipu_type = devtype->type;
1234
1235 spin_lock_init(&ipu->lock);
1236 mutex_init(&ipu->channel_lock);
1237
1238 dev_dbg(&pdev->dev, "cm_reg: 0x%08lx\n",
1239 ipu_base + devtype->cm_ofs);
1240 dev_dbg(&pdev->dev, "idmac: 0x%08lx\n",
1241 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS);
1242 dev_dbg(&pdev->dev, "cpmem: 0x%08lx\n",
1243 ipu_base + devtype->cpmem_ofs);
1244 dev_dbg(&pdev->dev, "csi0: 0x%08lx\n",
1245 ipu_base + devtype->csi0_ofs);
1246 dev_dbg(&pdev->dev, "csi1: 0x%08lx\n",
1247 ipu_base + devtype->csi1_ofs);
1248 dev_dbg(&pdev->dev, "ic: 0x%08lx\n",
1249 ipu_base + devtype->ic_ofs);
1250 dev_dbg(&pdev->dev, "disp0: 0x%08lx\n",
1251 ipu_base + devtype->disp0_ofs);
1252 dev_dbg(&pdev->dev, "disp1: 0x%08lx\n",
1253 ipu_base + devtype->disp1_ofs);
1254 dev_dbg(&pdev->dev, "srm: 0x%08lx\n",
1255 ipu_base + devtype->srm_ofs);
1256 dev_dbg(&pdev->dev, "tpm: 0x%08lx\n",
1257 ipu_base + devtype->tpm_ofs);
1258 dev_dbg(&pdev->dev, "dc: 0x%08lx\n",
1259 ipu_base + devtype->cm_ofs + IPU_CM_DC_REG_OFS);
1260 dev_dbg(&pdev->dev, "ic: 0x%08lx\n",
1261 ipu_base + devtype->cm_ofs + IPU_CM_IC_REG_OFS);
1262 dev_dbg(&pdev->dev, "dmfc: 0x%08lx\n",
1263 ipu_base + devtype->cm_ofs + IPU_CM_DMFC_REG_OFS);
1264 dev_dbg(&pdev->dev, "vdi: 0x%08lx\n",
1265 ipu_base + devtype->vdi_ofs);
1266
1267 ipu->cm_reg = devm_ioremap(&pdev->dev,
1268 ipu_base + devtype->cm_ofs, PAGE_SIZE);
1269 ipu->idmac_reg = devm_ioremap(&pdev->dev,
1270 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS,
1271 PAGE_SIZE);
1272
1273 if (!ipu->cm_reg || !ipu->idmac_reg)
1274 return -ENOMEM;
1275
1276 ipu->clk = devm_clk_get(&pdev->dev, "bus");
1277 if (IS_ERR(ipu->clk)) {
1278 ret = PTR_ERR(ipu->clk);
1279 dev_err(&pdev->dev, "clk_get failed with %d", ret);
1280 return ret;
1281 }
1282
1283 platform_set_drvdata(pdev, ipu);
1284
1285 ret = clk_prepare_enable(ipu->clk);
1286 if (ret) {
1287 dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret);
1288 return ret;
1289 }
1290
1291 ipu->dev = &pdev->dev;
1292 ipu->irq_sync = irq_sync;
1293 ipu->irq_err = irq_err;
1294
1295 ret = device_reset(&pdev->dev);
1296 if (ret) {
1297 dev_err(&pdev->dev, "failed to reset: %d\n", ret);
1298 goto out_failed_reset;
1299 }
1300 ret = ipu_memory_reset(ipu);
1301 if (ret)
1302 goto out_failed_reset;
1303
1304 ret = ipu_irq_init(ipu);
1305 if (ret)
1306 goto out_failed_irq;
1307
1308 /* Set MCU_T to divide MCU access window into 2 */
1309 ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
1310 IPU_DISP_GEN);
1311
1312 ret = ipu_submodules_init(ipu, pdev, ipu_base, ipu->clk);
1313 if (ret)
1314 goto failed_submodules_init;
1315
1316 ret = ipu_add_client_devices(ipu, ipu_base);
1317 if (ret) {
1318 dev_err(&pdev->dev, "adding client devices failed with %d\n",
1319 ret);
1320 goto failed_add_clients;
1321 }
1322
1323 dev_info(&pdev->dev, "%s probed\n", devtype->name);
1324
1325 return 0;
1326
1327 failed_add_clients:
1328 ipu_submodules_exit(ipu);
1329 failed_submodules_init:
1330 ipu_irq_exit(ipu);
1331 out_failed_irq:
1332 out_failed_reset:
1333 clk_disable_unprepare(ipu->clk);
1334 return ret;
1335 }
1336
1337 static int ipu_remove(struct platform_device *pdev)
1338 {
1339 struct ipu_soc *ipu = platform_get_drvdata(pdev);
1340
1341 platform_device_unregister_children(pdev);
1342 ipu_submodules_exit(ipu);
1343 ipu_irq_exit(ipu);
1344
1345 clk_disable_unprepare(ipu->clk);
1346
1347 return 0;
1348 }
1349
1350 static struct platform_driver imx_ipu_driver = {
1351 .driver = {
1352 .name = "imx-ipuv3",
1353 .of_match_table = imx_ipu_dt_ids,
1354 },
1355 .probe = ipu_probe,
1356 .remove = ipu_remove,
1357 };
1358
1359 module_platform_driver(imx_ipu_driver);
1360
1361 MODULE_ALIAS("platform:imx-ipuv3");
1362 MODULE_DESCRIPTION("i.MX IPU v3 driver");
1363 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
1364 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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