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staging: delete non-required instances of include <linux/init.h>
[deliverable/linux.git] / drivers / staging / imx-drm / 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
32 #include <drm/drm_fourcc.h>
33
34 #include "imx-ipu-v3.h"
35 #include "ipu-prv.h"
36
37 static inline u32 ipu_cm_read(struct ipu_soc *ipu, unsigned offset)
38 {
39 return readl(ipu->cm_reg + offset);
40 }
41
42 static inline void ipu_cm_write(struct ipu_soc *ipu, u32 value, unsigned offset)
43 {
44 writel(value, ipu->cm_reg + offset);
45 }
46
47 static inline u32 ipu_idmac_read(struct ipu_soc *ipu, unsigned offset)
48 {
49 return readl(ipu->idmac_reg + offset);
50 }
51
52 static inline void ipu_idmac_write(struct ipu_soc *ipu, u32 value,
53 unsigned offset)
54 {
55 writel(value, ipu->idmac_reg + offset);
56 }
57
58 void ipu_srm_dp_sync_update(struct ipu_soc *ipu)
59 {
60 u32 val;
61
62 val = ipu_cm_read(ipu, IPU_SRM_PRI2);
63 val |= 0x8;
64 ipu_cm_write(ipu, val, IPU_SRM_PRI2);
65 }
66 EXPORT_SYMBOL_GPL(ipu_srm_dp_sync_update);
67
68 struct ipu_ch_param __iomem *ipu_get_cpmem(struct ipuv3_channel *channel)
69 {
70 struct ipu_soc *ipu = channel->ipu;
71
72 return ipu->cpmem_base + channel->num;
73 }
74 EXPORT_SYMBOL_GPL(ipu_get_cpmem);
75
76 void ipu_cpmem_set_high_priority(struct ipuv3_channel *channel)
77 {
78 struct ipu_soc *ipu = channel->ipu;
79 struct ipu_ch_param __iomem *p = ipu_get_cpmem(channel);
80 u32 val;
81
82 if (ipu->ipu_type == IPUV3EX)
83 ipu_ch_param_write_field(p, IPU_FIELD_ID, 1);
84
85 val = ipu_idmac_read(ipu, IDMAC_CHA_PRI(channel->num));
86 val |= 1 << (channel->num % 32);
87 ipu_idmac_write(ipu, val, IDMAC_CHA_PRI(channel->num));
88 };
89 EXPORT_SYMBOL_GPL(ipu_cpmem_set_high_priority);
90
91 void ipu_ch_param_write_field(struct ipu_ch_param __iomem *base, u32 wbs, u32 v)
92 {
93 u32 bit = (wbs >> 8) % 160;
94 u32 size = wbs & 0xff;
95 u32 word = (wbs >> 8) / 160;
96 u32 i = bit / 32;
97 u32 ofs = bit % 32;
98 u32 mask = (1 << size) - 1;
99 u32 val;
100
101 pr_debug("%s %d %d %d\n", __func__, word, bit , size);
102
103 val = readl(&base->word[word].data[i]);
104 val &= ~(mask << ofs);
105 val |= v << ofs;
106 writel(val, &base->word[word].data[i]);
107
108 if ((bit + size - 1) / 32 > i) {
109 val = readl(&base->word[word].data[i + 1]);
110 val &= ~(mask >> (ofs ? (32 - ofs) : 0));
111 val |= v >> (ofs ? (32 - ofs) : 0);
112 writel(val, &base->word[word].data[i + 1]);
113 }
114 }
115 EXPORT_SYMBOL_GPL(ipu_ch_param_write_field);
116
117 u32 ipu_ch_param_read_field(struct ipu_ch_param __iomem *base, u32 wbs)
118 {
119 u32 bit = (wbs >> 8) % 160;
120 u32 size = wbs & 0xff;
121 u32 word = (wbs >> 8) / 160;
122 u32 i = bit / 32;
123 u32 ofs = bit % 32;
124 u32 mask = (1 << size) - 1;
125 u32 val = 0;
126
127 pr_debug("%s %d %d %d\n", __func__, word, bit , size);
128
129 val = (readl(&base->word[word].data[i]) >> ofs) & mask;
130
131 if ((bit + size - 1) / 32 > i) {
132 u32 tmp;
133 tmp = readl(&base->word[word].data[i + 1]);
134 tmp &= mask >> (ofs ? (32 - ofs) : 0);
135 val |= tmp << (ofs ? (32 - ofs) : 0);
136 }
137
138 return val;
139 }
140 EXPORT_SYMBOL_GPL(ipu_ch_param_read_field);
141
142 int ipu_cpmem_set_format_rgb(struct ipu_ch_param __iomem *p,
143 const struct ipu_rgb *rgb)
144 {
145 int bpp = 0, npb = 0, ro, go, bo, to;
146
147 ro = rgb->bits_per_pixel - rgb->red.length - rgb->red.offset;
148 go = rgb->bits_per_pixel - rgb->green.length - rgb->green.offset;
149 bo = rgb->bits_per_pixel - rgb->blue.length - rgb->blue.offset;
150 to = rgb->bits_per_pixel - rgb->transp.length - rgb->transp.offset;
151
152 ipu_ch_param_write_field(p, IPU_FIELD_WID0, rgb->red.length - 1);
153 ipu_ch_param_write_field(p, IPU_FIELD_OFS0, ro);
154 ipu_ch_param_write_field(p, IPU_FIELD_WID1, rgb->green.length - 1);
155 ipu_ch_param_write_field(p, IPU_FIELD_OFS1, go);
156 ipu_ch_param_write_field(p, IPU_FIELD_WID2, rgb->blue.length - 1);
157 ipu_ch_param_write_field(p, IPU_FIELD_OFS2, bo);
158
159 if (rgb->transp.length) {
160 ipu_ch_param_write_field(p, IPU_FIELD_WID3,
161 rgb->transp.length - 1);
162 ipu_ch_param_write_field(p, IPU_FIELD_OFS3, to);
163 } else {
164 ipu_ch_param_write_field(p, IPU_FIELD_WID3, 7);
165 ipu_ch_param_write_field(p, IPU_FIELD_OFS3,
166 rgb->bits_per_pixel);
167 }
168
169 switch (rgb->bits_per_pixel) {
170 case 32:
171 bpp = 0;
172 npb = 15;
173 break;
174 case 24:
175 bpp = 1;
176 npb = 19;
177 break;
178 case 16:
179 bpp = 3;
180 npb = 31;
181 break;
182 case 8:
183 bpp = 5;
184 npb = 63;
185 break;
186 default:
187 return -EINVAL;
188 }
189 ipu_ch_param_write_field(p, IPU_FIELD_BPP, bpp);
190 ipu_ch_param_write_field(p, IPU_FIELD_NPB, npb);
191 ipu_ch_param_write_field(p, IPU_FIELD_PFS, 7); /* rgb mode */
192
193 return 0;
194 }
195 EXPORT_SYMBOL_GPL(ipu_cpmem_set_format_rgb);
196
197 int ipu_cpmem_set_format_passthrough(struct ipu_ch_param __iomem *p,
198 int width)
199 {
200 int bpp = 0, npb = 0;
201
202 switch (width) {
203 case 32:
204 bpp = 0;
205 npb = 15;
206 break;
207 case 24:
208 bpp = 1;
209 npb = 19;
210 break;
211 case 16:
212 bpp = 3;
213 npb = 31;
214 break;
215 case 8:
216 bpp = 5;
217 npb = 63;
218 break;
219 default:
220 return -EINVAL;
221 }
222
223 ipu_ch_param_write_field(p, IPU_FIELD_BPP, bpp);
224 ipu_ch_param_write_field(p, IPU_FIELD_NPB, npb);
225 ipu_ch_param_write_field(p, IPU_FIELD_PFS, 6); /* raw mode */
226
227 return 0;
228 }
229 EXPORT_SYMBOL_GPL(ipu_cpmem_set_format_passthrough);
230
231 void ipu_cpmem_set_yuv_interleaved(struct ipu_ch_param __iomem *p,
232 u32 pixel_format)
233 {
234 switch (pixel_format) {
235 case V4L2_PIX_FMT_UYVY:
236 ipu_ch_param_write_field(p, IPU_FIELD_BPP, 3); /* bits/pixel */
237 ipu_ch_param_write_field(p, IPU_FIELD_PFS, 0xA); /* pix format */
238 ipu_ch_param_write_field(p, IPU_FIELD_NPB, 31); /* burst size */
239 break;
240 case V4L2_PIX_FMT_YUYV:
241 ipu_ch_param_write_field(p, IPU_FIELD_BPP, 3); /* bits/pixel */
242 ipu_ch_param_write_field(p, IPU_FIELD_PFS, 0x8); /* pix format */
243 ipu_ch_param_write_field(p, IPU_FIELD_NPB, 31); /* burst size */
244 break;
245 }
246 }
247 EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_interleaved);
248
249 void ipu_cpmem_set_yuv_planar_full(struct ipu_ch_param __iomem *p,
250 u32 pixel_format, int stride, int u_offset, int v_offset)
251 {
252 switch (pixel_format) {
253 case V4L2_PIX_FMT_YUV420:
254 ipu_ch_param_write_field(p, IPU_FIELD_SLUV, (stride / 2) - 1);
255 ipu_ch_param_write_field(p, IPU_FIELD_UBO, u_offset / 8);
256 ipu_ch_param_write_field(p, IPU_FIELD_VBO, v_offset / 8);
257 break;
258 case V4L2_PIX_FMT_YVU420:
259 ipu_ch_param_write_field(p, IPU_FIELD_SLUV, (stride / 2) - 1);
260 ipu_ch_param_write_field(p, IPU_FIELD_UBO, v_offset / 8);
261 ipu_ch_param_write_field(p, IPU_FIELD_VBO, u_offset / 8);
262 break;
263 }
264 }
265 EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar_full);
266
267 void ipu_cpmem_set_yuv_planar(struct ipu_ch_param __iomem *p, u32 pixel_format,
268 int stride, int height)
269 {
270 int u_offset, v_offset;
271 int uv_stride = 0;
272
273 switch (pixel_format) {
274 case V4L2_PIX_FMT_YUV420:
275 case V4L2_PIX_FMT_YVU420:
276 uv_stride = stride / 2;
277 u_offset = stride * height;
278 v_offset = u_offset + (uv_stride * height / 2);
279 ipu_cpmem_set_yuv_planar_full(p, pixel_format, stride,
280 u_offset, v_offset);
281 break;
282 }
283 }
284 EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar);
285
286 static const struct ipu_rgb def_rgb_32 = {
287 .red = { .offset = 16, .length = 8, },
288 .green = { .offset = 8, .length = 8, },
289 .blue = { .offset = 0, .length = 8, },
290 .transp = { .offset = 24, .length = 8, },
291 .bits_per_pixel = 32,
292 };
293
294 static const struct ipu_rgb def_bgr_32 = {
295 .red = { .offset = 0, .length = 8, },
296 .green = { .offset = 8, .length = 8, },
297 .blue = { .offset = 16, .length = 8, },
298 .transp = { .offset = 24, .length = 8, },
299 .bits_per_pixel = 32,
300 };
301
302 static const struct ipu_rgb def_rgb_24 = {
303 .red = { .offset = 16, .length = 8, },
304 .green = { .offset = 8, .length = 8, },
305 .blue = { .offset = 0, .length = 8, },
306 .transp = { .offset = 0, .length = 0, },
307 .bits_per_pixel = 24,
308 };
309
310 static const struct ipu_rgb def_bgr_24 = {
311 .red = { .offset = 0, .length = 8, },
312 .green = { .offset = 8, .length = 8, },
313 .blue = { .offset = 16, .length = 8, },
314 .transp = { .offset = 0, .length = 0, },
315 .bits_per_pixel = 24,
316 };
317
318 static const struct ipu_rgb def_rgb_16 = {
319 .red = { .offset = 11, .length = 5, },
320 .green = { .offset = 5, .length = 6, },
321 .blue = { .offset = 0, .length = 5, },
322 .transp = { .offset = 0, .length = 0, },
323 .bits_per_pixel = 16,
324 };
325
326 static const struct ipu_rgb def_bgr_16 = {
327 .red = { .offset = 0, .length = 5, },
328 .green = { .offset = 5, .length = 6, },
329 .blue = { .offset = 11, .length = 5, },
330 .transp = { .offset = 0, .length = 0, },
331 .bits_per_pixel = 16,
332 };
333
334 #define Y_OFFSET(pix, x, y) ((x) + pix->width * (y))
335 #define U_OFFSET(pix, x, y) ((pix->width * pix->height) + \
336 (pix->width * (y) / 4) + (x) / 2)
337 #define V_OFFSET(pix, x, y) ((pix->width * pix->height) + \
338 (pix->width * pix->height / 4) + \
339 (pix->width * (y) / 4) + (x) / 2)
340
341 int ipu_cpmem_set_fmt(struct ipu_ch_param __iomem *cpmem, u32 drm_fourcc)
342 {
343 switch (drm_fourcc) {
344 case DRM_FORMAT_YUV420:
345 case DRM_FORMAT_YVU420:
346 /* pix format */
347 ipu_ch_param_write_field(cpmem, IPU_FIELD_PFS, 2);
348 /* burst size */
349 ipu_ch_param_write_field(cpmem, IPU_FIELD_NPB, 63);
350 break;
351 case DRM_FORMAT_UYVY:
352 /* bits/pixel */
353 ipu_ch_param_write_field(cpmem, IPU_FIELD_BPP, 3);
354 /* pix format */
355 ipu_ch_param_write_field(cpmem, IPU_FIELD_PFS, 0xA);
356 /* burst size */
357 ipu_ch_param_write_field(cpmem, IPU_FIELD_NPB, 31);
358 break;
359 case DRM_FORMAT_YUYV:
360 /* bits/pixel */
361 ipu_ch_param_write_field(cpmem, IPU_FIELD_BPP, 3);
362 /* pix format */
363 ipu_ch_param_write_field(cpmem, IPU_FIELD_PFS, 0x8);
364 /* burst size */
365 ipu_ch_param_write_field(cpmem, IPU_FIELD_NPB, 31);
366 break;
367 case DRM_FORMAT_ABGR8888:
368 case DRM_FORMAT_XBGR8888:
369 ipu_cpmem_set_format_rgb(cpmem, &def_bgr_32);
370 break;
371 case DRM_FORMAT_ARGB8888:
372 case DRM_FORMAT_XRGB8888:
373 ipu_cpmem_set_format_rgb(cpmem, &def_rgb_32);
374 break;
375 case DRM_FORMAT_BGR888:
376 ipu_cpmem_set_format_rgb(cpmem, &def_bgr_24);
377 break;
378 case DRM_FORMAT_RGB888:
379 ipu_cpmem_set_format_rgb(cpmem, &def_rgb_24);
380 break;
381 case DRM_FORMAT_RGB565:
382 ipu_cpmem_set_format_rgb(cpmem, &def_rgb_16);
383 break;
384 case DRM_FORMAT_BGR565:
385 ipu_cpmem_set_format_rgb(cpmem, &def_bgr_16);
386 break;
387 default:
388 return -EINVAL;
389 }
390
391 return 0;
392 }
393 EXPORT_SYMBOL_GPL(ipu_cpmem_set_fmt);
394
395 /*
396 * The V4L2 spec defines packed RGB formats in memory byte order, which from
397 * point of view of the IPU corresponds to little-endian words with the first
398 * component in the least significant bits.
399 * The DRM pixel formats and IPU internal representation are ordered the other
400 * way around, with the first named component ordered at the most significant
401 * bits. Further, V4L2 formats are not well defined:
402 * http://linuxtv.org/downloads/v4l-dvb-apis/packed-rgb.html
403 * We choose the interpretation which matches GStreamer behavior.
404 */
405 static int v4l2_pix_fmt_to_drm_fourcc(u32 pixelformat)
406 {
407 switch (pixelformat) {
408 case V4L2_PIX_FMT_RGB565:
409 /*
410 * Here we choose the 'corrected' interpretation of RGBP, a
411 * little-endian 16-bit word with the red component at the most
412 * significant bits:
413 * g[2:0]b[4:0] r[4:0]g[5:3] <=> [16:0] R:G:B
414 */
415 return DRM_FORMAT_RGB565;
416 case V4L2_PIX_FMT_BGR24:
417 /* B G R <=> [24:0] R:G:B */
418 return DRM_FORMAT_RGB888;
419 case V4L2_PIX_FMT_RGB24:
420 /* R G B <=> [24:0] B:G:R */
421 return DRM_FORMAT_BGR888;
422 case V4L2_PIX_FMT_BGR32:
423 /* B G R A <=> [32:0] A:B:G:R */
424 return DRM_FORMAT_XRGB8888;
425 case V4L2_PIX_FMT_RGB32:
426 /* R G B A <=> [32:0] A:B:G:R */
427 return DRM_FORMAT_XBGR8888;
428 case V4L2_PIX_FMT_UYVY:
429 return DRM_FORMAT_UYVY;
430 case V4L2_PIX_FMT_YUYV:
431 return DRM_FORMAT_YUYV;
432 case V4L2_PIX_FMT_YUV420:
433 return DRM_FORMAT_YUV420;
434 case V4L2_PIX_FMT_YVU420:
435 return DRM_FORMAT_YVU420;
436 }
437
438 return -EINVAL;
439 }
440
441 enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
442 {
443 switch (drm_fourcc) {
444 case DRM_FORMAT_RGB565:
445 case DRM_FORMAT_BGR565:
446 case DRM_FORMAT_RGB888:
447 case DRM_FORMAT_BGR888:
448 case DRM_FORMAT_XRGB8888:
449 case DRM_FORMAT_XBGR8888:
450 case DRM_FORMAT_RGBX8888:
451 case DRM_FORMAT_BGRX8888:
452 case DRM_FORMAT_ARGB8888:
453 case DRM_FORMAT_ABGR8888:
454 case DRM_FORMAT_RGBA8888:
455 case DRM_FORMAT_BGRA8888:
456 return IPUV3_COLORSPACE_RGB;
457 case DRM_FORMAT_YUYV:
458 case DRM_FORMAT_UYVY:
459 case DRM_FORMAT_YUV420:
460 case DRM_FORMAT_YVU420:
461 return IPUV3_COLORSPACE_YUV;
462 default:
463 return IPUV3_COLORSPACE_UNKNOWN;
464 }
465 }
466 EXPORT_SYMBOL_GPL(ipu_drm_fourcc_to_colorspace);
467
468 int ipu_cpmem_set_image(struct ipu_ch_param __iomem *cpmem,
469 struct ipu_image *image)
470 {
471 struct v4l2_pix_format *pix = &image->pix;
472 int y_offset, u_offset, v_offset;
473
474 pr_debug("%s: resolution: %dx%d stride: %d\n",
475 __func__, pix->width, pix->height,
476 pix->bytesperline);
477
478 ipu_cpmem_set_resolution(cpmem, image->rect.width,
479 image->rect.height);
480 ipu_cpmem_set_stride(cpmem, pix->bytesperline);
481
482 ipu_cpmem_set_fmt(cpmem, v4l2_pix_fmt_to_drm_fourcc(pix->pixelformat));
483
484 switch (pix->pixelformat) {
485 case V4L2_PIX_FMT_YUV420:
486 case V4L2_PIX_FMT_YVU420:
487 y_offset = Y_OFFSET(pix, image->rect.left, image->rect.top);
488 u_offset = U_OFFSET(pix, image->rect.left,
489 image->rect.top) - y_offset;
490 v_offset = V_OFFSET(pix, image->rect.left,
491 image->rect.top) - y_offset;
492
493 ipu_cpmem_set_yuv_planar_full(cpmem, pix->pixelformat,
494 pix->bytesperline, u_offset, v_offset);
495 ipu_cpmem_set_buffer(cpmem, 0, image->phys + y_offset);
496 break;
497 case V4L2_PIX_FMT_UYVY:
498 case V4L2_PIX_FMT_YUYV:
499 ipu_cpmem_set_buffer(cpmem, 0, image->phys +
500 image->rect.left * 2 +
501 image->rect.top * image->pix.bytesperline);
502 break;
503 case V4L2_PIX_FMT_RGB32:
504 case V4L2_PIX_FMT_BGR32:
505 ipu_cpmem_set_buffer(cpmem, 0, image->phys +
506 image->rect.left * 4 +
507 image->rect.top * image->pix.bytesperline);
508 break;
509 case V4L2_PIX_FMT_RGB565:
510 ipu_cpmem_set_buffer(cpmem, 0, image->phys +
511 image->rect.left * 2 +
512 image->rect.top * image->pix.bytesperline);
513 break;
514 case V4L2_PIX_FMT_RGB24:
515 case V4L2_PIX_FMT_BGR24:
516 ipu_cpmem_set_buffer(cpmem, 0, image->phys +
517 image->rect.left * 3 +
518 image->rect.top * image->pix.bytesperline);
519 break;
520 default:
521 return -EINVAL;
522 }
523
524 return 0;
525 }
526 EXPORT_SYMBOL_GPL(ipu_cpmem_set_image);
527
528 enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
529 {
530 switch (pixelformat) {
531 case V4L2_PIX_FMT_YUV420:
532 case V4L2_PIX_FMT_YVU420:
533 case V4L2_PIX_FMT_UYVY:
534 case V4L2_PIX_FMT_YUYV:
535 return IPUV3_COLORSPACE_YUV;
536 case V4L2_PIX_FMT_RGB32:
537 case V4L2_PIX_FMT_BGR32:
538 case V4L2_PIX_FMT_RGB24:
539 case V4L2_PIX_FMT_BGR24:
540 case V4L2_PIX_FMT_RGB565:
541 return IPUV3_COLORSPACE_RGB;
542 default:
543 return IPUV3_COLORSPACE_UNKNOWN;
544 }
545 }
546 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace);
547
548 struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num)
549 {
550 struct ipuv3_channel *channel;
551
552 dev_dbg(ipu->dev, "%s %d\n", __func__, num);
553
554 if (num > 63)
555 return ERR_PTR(-ENODEV);
556
557 mutex_lock(&ipu->channel_lock);
558
559 channel = &ipu->channel[num];
560
561 if (channel->busy) {
562 channel = ERR_PTR(-EBUSY);
563 goto out;
564 }
565
566 channel->busy = true;
567 channel->num = num;
568
569 out:
570 mutex_unlock(&ipu->channel_lock);
571
572 return channel;
573 }
574 EXPORT_SYMBOL_GPL(ipu_idmac_get);
575
576 void ipu_idmac_put(struct ipuv3_channel *channel)
577 {
578 struct ipu_soc *ipu = channel->ipu;
579
580 dev_dbg(ipu->dev, "%s %d\n", __func__, channel->num);
581
582 mutex_lock(&ipu->channel_lock);
583
584 channel->busy = false;
585
586 mutex_unlock(&ipu->channel_lock);
587 }
588 EXPORT_SYMBOL_GPL(ipu_idmac_put);
589
590 #define idma_mask(ch) (1 << (ch & 0x1f))
591
592 void ipu_idmac_set_double_buffer(struct ipuv3_channel *channel,
593 bool doublebuffer)
594 {
595 struct ipu_soc *ipu = channel->ipu;
596 unsigned long flags;
597 u32 reg;
598
599 spin_lock_irqsave(&ipu->lock, flags);
600
601 reg = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
602 if (doublebuffer)
603 reg |= idma_mask(channel->num);
604 else
605 reg &= ~idma_mask(channel->num);
606 ipu_cm_write(ipu, reg, IPU_CHA_DB_MODE_SEL(channel->num));
607
608 spin_unlock_irqrestore(&ipu->lock, flags);
609 }
610 EXPORT_SYMBOL_GPL(ipu_idmac_set_double_buffer);
611
612 int ipu_module_enable(struct ipu_soc *ipu, u32 mask)
613 {
614 unsigned long lock_flags;
615 u32 val;
616
617 spin_lock_irqsave(&ipu->lock, lock_flags);
618
619 val = ipu_cm_read(ipu, IPU_DISP_GEN);
620
621 if (mask & IPU_CONF_DI0_EN)
622 val |= IPU_DI0_COUNTER_RELEASE;
623 if (mask & IPU_CONF_DI1_EN)
624 val |= IPU_DI1_COUNTER_RELEASE;
625
626 ipu_cm_write(ipu, val, IPU_DISP_GEN);
627
628 val = ipu_cm_read(ipu, IPU_CONF);
629 val |= mask;
630 ipu_cm_write(ipu, val, IPU_CONF);
631
632 spin_unlock_irqrestore(&ipu->lock, lock_flags);
633
634 return 0;
635 }
636 EXPORT_SYMBOL_GPL(ipu_module_enable);
637
638 int ipu_module_disable(struct ipu_soc *ipu, u32 mask)
639 {
640 unsigned long lock_flags;
641 u32 val;
642
643 spin_lock_irqsave(&ipu->lock, lock_flags);
644
645 val = ipu_cm_read(ipu, IPU_CONF);
646 val &= ~mask;
647 ipu_cm_write(ipu, val, IPU_CONF);
648
649 val = ipu_cm_read(ipu, IPU_DISP_GEN);
650
651 if (mask & IPU_CONF_DI0_EN)
652 val &= ~IPU_DI0_COUNTER_RELEASE;
653 if (mask & IPU_CONF_DI1_EN)
654 val &= ~IPU_DI1_COUNTER_RELEASE;
655
656 ipu_cm_write(ipu, val, IPU_DISP_GEN);
657
658 spin_unlock_irqrestore(&ipu->lock, lock_flags);
659
660 return 0;
661 }
662 EXPORT_SYMBOL_GPL(ipu_module_disable);
663
664 void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num)
665 {
666 struct ipu_soc *ipu = channel->ipu;
667 unsigned int chno = channel->num;
668 unsigned long flags;
669
670 spin_lock_irqsave(&ipu->lock, flags);
671
672 /* Mark buffer as ready. */
673 if (buf_num == 0)
674 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno));
675 else
676 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno));
677
678 spin_unlock_irqrestore(&ipu->lock, flags);
679 }
680 EXPORT_SYMBOL_GPL(ipu_idmac_select_buffer);
681
682 int ipu_idmac_enable_channel(struct ipuv3_channel *channel)
683 {
684 struct ipu_soc *ipu = channel->ipu;
685 u32 val;
686 unsigned long flags;
687
688 spin_lock_irqsave(&ipu->lock, flags);
689
690 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
691 val |= idma_mask(channel->num);
692 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
693
694 spin_unlock_irqrestore(&ipu->lock, flags);
695
696 return 0;
697 }
698 EXPORT_SYMBOL_GPL(ipu_idmac_enable_channel);
699
700 int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms)
701 {
702 struct ipu_soc *ipu = channel->ipu;
703 unsigned long timeout;
704
705 timeout = jiffies + msecs_to_jiffies(ms);
706 while (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(channel->num)) &
707 idma_mask(channel->num)) {
708 if (time_after(jiffies, timeout))
709 return -ETIMEDOUT;
710 cpu_relax();
711 }
712
713 return 0;
714 }
715 EXPORT_SYMBOL_GPL(ipu_idmac_wait_busy);
716
717 int ipu_idmac_disable_channel(struct ipuv3_channel *channel)
718 {
719 struct ipu_soc *ipu = channel->ipu;
720 u32 val;
721 unsigned long flags;
722
723 spin_lock_irqsave(&ipu->lock, flags);
724
725 /* Disable DMA channel(s) */
726 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
727 val &= ~idma_mask(channel->num);
728 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
729
730 /* Set channel buffers NOT to be ready */
731 ipu_cm_write(ipu, 0xf0000000, IPU_GPR); /* write one to clear */
732
733 if (ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num)) &
734 idma_mask(channel->num)) {
735 ipu_cm_write(ipu, idma_mask(channel->num),
736 IPU_CHA_BUF0_RDY(channel->num));
737 }
738
739 if (ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num)) &
740 idma_mask(channel->num)) {
741 ipu_cm_write(ipu, idma_mask(channel->num),
742 IPU_CHA_BUF1_RDY(channel->num));
743 }
744
745 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */
746
747 /* Reset the double buffer */
748 val = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
749 val &= ~idma_mask(channel->num);
750 ipu_cm_write(ipu, val, IPU_CHA_DB_MODE_SEL(channel->num));
751
752 spin_unlock_irqrestore(&ipu->lock, flags);
753
754 return 0;
755 }
756 EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel);
757
758 static int ipu_memory_reset(struct ipu_soc *ipu)
759 {
760 unsigned long timeout;
761
762 ipu_cm_write(ipu, 0x807FFFFF, IPU_MEM_RST);
763
764 timeout = jiffies + msecs_to_jiffies(1000);
765 while (ipu_cm_read(ipu, IPU_MEM_RST) & 0x80000000) {
766 if (time_after(jiffies, timeout))
767 return -ETIME;
768 cpu_relax();
769 }
770
771 return 0;
772 }
773
774 struct ipu_devtype {
775 const char *name;
776 unsigned long cm_ofs;
777 unsigned long cpmem_ofs;
778 unsigned long srm_ofs;
779 unsigned long tpm_ofs;
780 unsigned long disp0_ofs;
781 unsigned long disp1_ofs;
782 unsigned long dc_tmpl_ofs;
783 unsigned long vdi_ofs;
784 enum ipuv3_type type;
785 };
786
787 static struct ipu_devtype ipu_type_imx51 = {
788 .name = "IPUv3EX",
789 .cm_ofs = 0x1e000000,
790 .cpmem_ofs = 0x1f000000,
791 .srm_ofs = 0x1f040000,
792 .tpm_ofs = 0x1f060000,
793 .disp0_ofs = 0x1e040000,
794 .disp1_ofs = 0x1e048000,
795 .dc_tmpl_ofs = 0x1f080000,
796 .vdi_ofs = 0x1e068000,
797 .type = IPUV3EX,
798 };
799
800 static struct ipu_devtype ipu_type_imx53 = {
801 .name = "IPUv3M",
802 .cm_ofs = 0x06000000,
803 .cpmem_ofs = 0x07000000,
804 .srm_ofs = 0x07040000,
805 .tpm_ofs = 0x07060000,
806 .disp0_ofs = 0x06040000,
807 .disp1_ofs = 0x06048000,
808 .dc_tmpl_ofs = 0x07080000,
809 .vdi_ofs = 0x06068000,
810 .type = IPUV3M,
811 };
812
813 static struct ipu_devtype ipu_type_imx6q = {
814 .name = "IPUv3H",
815 .cm_ofs = 0x00200000,
816 .cpmem_ofs = 0x00300000,
817 .srm_ofs = 0x00340000,
818 .tpm_ofs = 0x00360000,
819 .disp0_ofs = 0x00240000,
820 .disp1_ofs = 0x00248000,
821 .dc_tmpl_ofs = 0x00380000,
822 .vdi_ofs = 0x00268000,
823 .type = IPUV3H,
824 };
825
826 static const struct of_device_id imx_ipu_dt_ids[] = {
827 { .compatible = "fsl,imx51-ipu", .data = &ipu_type_imx51, },
828 { .compatible = "fsl,imx53-ipu", .data = &ipu_type_imx53, },
829 { .compatible = "fsl,imx6q-ipu", .data = &ipu_type_imx6q, },
830 { /* sentinel */ }
831 };
832 MODULE_DEVICE_TABLE(of, imx_ipu_dt_ids);
833
834 static int ipu_submodules_init(struct ipu_soc *ipu,
835 struct platform_device *pdev, unsigned long ipu_base,
836 struct clk *ipu_clk)
837 {
838 char *unit;
839 int ret;
840 struct device *dev = &pdev->dev;
841 const struct ipu_devtype *devtype = ipu->devtype;
842
843 ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs,
844 IPU_CONF_DI0_EN, ipu_clk);
845 if (ret) {
846 unit = "di0";
847 goto err_di_0;
848 }
849
850 ret = ipu_di_init(ipu, dev, 1, ipu_base + devtype->disp1_ofs,
851 IPU_CONF_DI1_EN, ipu_clk);
852 if (ret) {
853 unit = "di1";
854 goto err_di_1;
855 }
856
857 ret = ipu_dc_init(ipu, dev, ipu_base + devtype->cm_ofs +
858 IPU_CM_DC_REG_OFS, ipu_base + devtype->dc_tmpl_ofs);
859 if (ret) {
860 unit = "dc_template";
861 goto err_dc;
862 }
863
864 ret = ipu_dmfc_init(ipu, dev, ipu_base +
865 devtype->cm_ofs + IPU_CM_DMFC_REG_OFS, ipu_clk);
866 if (ret) {
867 unit = "dmfc";
868 goto err_dmfc;
869 }
870
871 ret = ipu_dp_init(ipu, dev, ipu_base + devtype->srm_ofs);
872 if (ret) {
873 unit = "dp";
874 goto err_dp;
875 }
876
877 return 0;
878
879 err_dp:
880 ipu_dmfc_exit(ipu);
881 err_dmfc:
882 ipu_dc_exit(ipu);
883 err_dc:
884 ipu_di_exit(ipu, 1);
885 err_di_1:
886 ipu_di_exit(ipu, 0);
887 err_di_0:
888 dev_err(&pdev->dev, "init %s failed with %d\n", unit, ret);
889 return ret;
890 }
891
892 static void ipu_irq_handle(struct ipu_soc *ipu, const int *regs, int num_regs)
893 {
894 unsigned long status;
895 int i, bit, irq;
896
897 for (i = 0; i < num_regs; i++) {
898
899 status = ipu_cm_read(ipu, IPU_INT_STAT(regs[i]));
900 status &= ipu_cm_read(ipu, IPU_INT_CTRL(regs[i]));
901
902 for_each_set_bit(bit, &status, 32) {
903 irq = irq_linear_revmap(ipu->domain, regs[i] * 32 + bit);
904 if (irq)
905 generic_handle_irq(irq);
906 }
907 }
908 }
909
910 static void ipu_irq_handler(unsigned int irq, struct irq_desc *desc)
911 {
912 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
913 const int int_reg[] = { 0, 1, 2, 3, 10, 11, 12, 13, 14};
914 struct irq_chip *chip = irq_get_chip(irq);
915
916 chained_irq_enter(chip, desc);
917
918 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
919
920 chained_irq_exit(chip, desc);
921 }
922
923 static void ipu_err_irq_handler(unsigned int irq, struct irq_desc *desc)
924 {
925 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
926 const int int_reg[] = { 4, 5, 8, 9};
927 struct irq_chip *chip = irq_get_chip(irq);
928
929 chained_irq_enter(chip, desc);
930
931 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
932
933 chained_irq_exit(chip, desc);
934 }
935
936 int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel,
937 enum ipu_channel_irq irq_type)
938 {
939 int irq = irq_linear_revmap(ipu->domain, irq_type + channel->num);
940
941 if (!irq)
942 irq = irq_create_mapping(ipu->domain, irq_type + channel->num);
943
944 return irq;
945 }
946 EXPORT_SYMBOL_GPL(ipu_idmac_channel_irq);
947
948 static void ipu_submodules_exit(struct ipu_soc *ipu)
949 {
950 ipu_dp_exit(ipu);
951 ipu_dmfc_exit(ipu);
952 ipu_dc_exit(ipu);
953 ipu_di_exit(ipu, 1);
954 ipu_di_exit(ipu, 0);
955 }
956
957 static int platform_remove_devices_fn(struct device *dev, void *unused)
958 {
959 struct platform_device *pdev = to_platform_device(dev);
960
961 platform_device_unregister(pdev);
962
963 return 0;
964 }
965
966 static void platform_device_unregister_children(struct platform_device *pdev)
967 {
968 device_for_each_child(&pdev->dev, NULL, platform_remove_devices_fn);
969 }
970
971 struct ipu_platform_reg {
972 struct ipu_client_platformdata pdata;
973 const char *name;
974 };
975
976 static const struct ipu_platform_reg client_reg[] = {
977 {
978 .pdata = {
979 .di = 0,
980 .dc = 5,
981 .dp = IPU_DP_FLOW_SYNC_BG,
982 .dma[0] = IPUV3_CHANNEL_MEM_BG_SYNC,
983 .dma[1] = IPUV3_CHANNEL_MEM_FG_SYNC,
984 },
985 .name = "imx-ipuv3-crtc",
986 }, {
987 .pdata = {
988 .di = 1,
989 .dc = 1,
990 .dp = -EINVAL,
991 .dma[0] = IPUV3_CHANNEL_MEM_DC_SYNC,
992 .dma[1] = -EINVAL,
993 },
994 .name = "imx-ipuv3-crtc",
995 },
996 };
997
998 static int ipu_client_id;
999
1000 static int ipu_add_subdevice_pdata(struct device *dev,
1001 const struct ipu_platform_reg *reg)
1002 {
1003 struct platform_device *pdev;
1004
1005 pdev = platform_device_register_data(dev, reg->name, ipu_client_id++,
1006 &reg->pdata, sizeof(struct ipu_platform_reg));
1007
1008 return PTR_ERR_OR_ZERO(pdev);
1009 }
1010
1011 static int ipu_add_client_devices(struct ipu_soc *ipu)
1012 {
1013 int ret;
1014 int i;
1015
1016 for (i = 0; i < ARRAY_SIZE(client_reg); i++) {
1017 const struct ipu_platform_reg *reg = &client_reg[i];
1018 ret = ipu_add_subdevice_pdata(ipu->dev, reg);
1019 if (ret)
1020 goto err_register;
1021 }
1022
1023 return 0;
1024
1025 err_register:
1026 platform_device_unregister_children(to_platform_device(ipu->dev));
1027
1028 return ret;
1029 }
1030
1031
1032 static int ipu_irq_init(struct ipu_soc *ipu)
1033 {
1034 struct irq_chip_generic *gc;
1035 struct irq_chip_type *ct;
1036 unsigned long unused[IPU_NUM_IRQS / 32] = {
1037 0x400100d0, 0xffe000fd,
1038 0x400100d0, 0xffe000fd,
1039 0x400100d0, 0xffe000fd,
1040 0x4077ffff, 0xffe7e1fd,
1041 0x23fffffe, 0x8880fff0,
1042 0xf98fe7d0, 0xfff81fff,
1043 0x400100d0, 0xffe000fd,
1044 0x00000000,
1045 };
1046 int ret, i;
1047
1048 ipu->domain = irq_domain_add_linear(ipu->dev->of_node, IPU_NUM_IRQS,
1049 &irq_generic_chip_ops, ipu);
1050 if (!ipu->domain) {
1051 dev_err(ipu->dev, "failed to add irq domain\n");
1052 return -ENODEV;
1053 }
1054
1055 ret = irq_alloc_domain_generic_chips(ipu->domain, 32, 1, "IPU",
1056 handle_level_irq, 0, IRQF_VALID, 0);
1057 if (ret < 0) {
1058 dev_err(ipu->dev, "failed to alloc generic irq chips\n");
1059 irq_domain_remove(ipu->domain);
1060 return ret;
1061 }
1062
1063 for (i = 0; i < IPU_NUM_IRQS; i += 32) {
1064 gc = irq_get_domain_generic_chip(ipu->domain, i);
1065 gc->reg_base = ipu->cm_reg;
1066 gc->unused = unused[i / 32];
1067 ct = gc->chip_types;
1068 ct->chip.irq_ack = irq_gc_ack_set_bit;
1069 ct->chip.irq_mask = irq_gc_mask_clr_bit;
1070 ct->chip.irq_unmask = irq_gc_mask_set_bit;
1071 ct->regs.ack = IPU_INT_STAT(i / 32);
1072 ct->regs.mask = IPU_INT_CTRL(i / 32);
1073 }
1074
1075 irq_set_chained_handler(ipu->irq_sync, ipu_irq_handler);
1076 irq_set_handler_data(ipu->irq_sync, ipu);
1077 irq_set_chained_handler(ipu->irq_err, ipu_err_irq_handler);
1078 irq_set_handler_data(ipu->irq_err, ipu);
1079
1080 return 0;
1081 }
1082
1083 static void ipu_irq_exit(struct ipu_soc *ipu)
1084 {
1085 int i, irq;
1086
1087 irq_set_chained_handler(ipu->irq_err, NULL);
1088 irq_set_handler_data(ipu->irq_err, NULL);
1089 irq_set_chained_handler(ipu->irq_sync, NULL);
1090 irq_set_handler_data(ipu->irq_sync, NULL);
1091
1092 /* TODO: remove irq_domain_generic_chips */
1093
1094 for (i = 0; i < IPU_NUM_IRQS; i++) {
1095 irq = irq_linear_revmap(ipu->domain, i);
1096 if (irq)
1097 irq_dispose_mapping(irq);
1098 }
1099
1100 irq_domain_remove(ipu->domain);
1101 }
1102
1103 static int ipu_probe(struct platform_device *pdev)
1104 {
1105 const struct of_device_id *of_id =
1106 of_match_device(imx_ipu_dt_ids, &pdev->dev);
1107 struct ipu_soc *ipu;
1108 struct resource *res;
1109 unsigned long ipu_base;
1110 int i, ret, irq_sync, irq_err;
1111 const struct ipu_devtype *devtype;
1112
1113 devtype = of_id->data;
1114
1115 irq_sync = platform_get_irq(pdev, 0);
1116 irq_err = platform_get_irq(pdev, 1);
1117 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1118
1119 dev_dbg(&pdev->dev, "irq_sync: %d irq_err: %d\n",
1120 irq_sync, irq_err);
1121
1122 if (!res || irq_sync < 0 || irq_err < 0)
1123 return -ENODEV;
1124
1125 ipu_base = res->start;
1126
1127 ipu = devm_kzalloc(&pdev->dev, sizeof(*ipu), GFP_KERNEL);
1128 if (!ipu)
1129 return -ENODEV;
1130
1131 for (i = 0; i < 64; i++)
1132 ipu->channel[i].ipu = ipu;
1133 ipu->devtype = devtype;
1134 ipu->ipu_type = devtype->type;
1135
1136 spin_lock_init(&ipu->lock);
1137 mutex_init(&ipu->channel_lock);
1138
1139 dev_dbg(&pdev->dev, "cm_reg: 0x%08lx\n",
1140 ipu_base + devtype->cm_ofs);
1141 dev_dbg(&pdev->dev, "idmac: 0x%08lx\n",
1142 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS);
1143 dev_dbg(&pdev->dev, "cpmem: 0x%08lx\n",
1144 ipu_base + devtype->cpmem_ofs);
1145 dev_dbg(&pdev->dev, "disp0: 0x%08lx\n",
1146 ipu_base + devtype->disp0_ofs);
1147 dev_dbg(&pdev->dev, "disp1: 0x%08lx\n",
1148 ipu_base + devtype->disp1_ofs);
1149 dev_dbg(&pdev->dev, "srm: 0x%08lx\n",
1150 ipu_base + devtype->srm_ofs);
1151 dev_dbg(&pdev->dev, "tpm: 0x%08lx\n",
1152 ipu_base + devtype->tpm_ofs);
1153 dev_dbg(&pdev->dev, "dc: 0x%08lx\n",
1154 ipu_base + devtype->cm_ofs + IPU_CM_DC_REG_OFS);
1155 dev_dbg(&pdev->dev, "ic: 0x%08lx\n",
1156 ipu_base + devtype->cm_ofs + IPU_CM_IC_REG_OFS);
1157 dev_dbg(&pdev->dev, "dmfc: 0x%08lx\n",
1158 ipu_base + devtype->cm_ofs + IPU_CM_DMFC_REG_OFS);
1159 dev_dbg(&pdev->dev, "vdi: 0x%08lx\n",
1160 ipu_base + devtype->vdi_ofs);
1161
1162 ipu->cm_reg = devm_ioremap(&pdev->dev,
1163 ipu_base + devtype->cm_ofs, PAGE_SIZE);
1164 ipu->idmac_reg = devm_ioremap(&pdev->dev,
1165 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS,
1166 PAGE_SIZE);
1167 ipu->cpmem_base = devm_ioremap(&pdev->dev,
1168 ipu_base + devtype->cpmem_ofs, PAGE_SIZE);
1169
1170 if (!ipu->cm_reg || !ipu->idmac_reg || !ipu->cpmem_base)
1171 return -ENOMEM;
1172
1173 ipu->clk = devm_clk_get(&pdev->dev, "bus");
1174 if (IS_ERR(ipu->clk)) {
1175 ret = PTR_ERR(ipu->clk);
1176 dev_err(&pdev->dev, "clk_get failed with %d", ret);
1177 return ret;
1178 }
1179
1180 platform_set_drvdata(pdev, ipu);
1181
1182 ret = clk_prepare_enable(ipu->clk);
1183 if (ret) {
1184 dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret);
1185 return ret;
1186 }
1187
1188 ipu->dev = &pdev->dev;
1189 ipu->irq_sync = irq_sync;
1190 ipu->irq_err = irq_err;
1191
1192 ret = ipu_irq_init(ipu);
1193 if (ret)
1194 goto out_failed_irq;
1195
1196 ret = device_reset(&pdev->dev);
1197 if (ret) {
1198 dev_err(&pdev->dev, "failed to reset: %d\n", ret);
1199 goto out_failed_reset;
1200 }
1201 ret = ipu_memory_reset(ipu);
1202 if (ret)
1203 goto out_failed_reset;
1204
1205 /* Set MCU_T to divide MCU access window into 2 */
1206 ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
1207 IPU_DISP_GEN);
1208
1209 ret = ipu_submodules_init(ipu, pdev, ipu_base, ipu->clk);
1210 if (ret)
1211 goto failed_submodules_init;
1212
1213 ret = ipu_add_client_devices(ipu);
1214 if (ret) {
1215 dev_err(&pdev->dev, "adding client devices failed with %d\n",
1216 ret);
1217 goto failed_add_clients;
1218 }
1219
1220 dev_info(&pdev->dev, "%s probed\n", devtype->name);
1221
1222 return 0;
1223
1224 failed_add_clients:
1225 ipu_submodules_exit(ipu);
1226 failed_submodules_init:
1227 out_failed_reset:
1228 ipu_irq_exit(ipu);
1229 out_failed_irq:
1230 clk_disable_unprepare(ipu->clk);
1231 return ret;
1232 }
1233
1234 static int ipu_remove(struct platform_device *pdev)
1235 {
1236 struct ipu_soc *ipu = platform_get_drvdata(pdev);
1237
1238 platform_device_unregister_children(pdev);
1239 ipu_submodules_exit(ipu);
1240 ipu_irq_exit(ipu);
1241
1242 clk_disable_unprepare(ipu->clk);
1243
1244 return 0;
1245 }
1246
1247 static struct platform_driver imx_ipu_driver = {
1248 .driver = {
1249 .name = "imx-ipuv3",
1250 .of_match_table = imx_ipu_dt_ids,
1251 },
1252 .probe = ipu_probe,
1253 .remove = ipu_remove,
1254 };
1255
1256 module_platform_driver(imx_ipu_driver);
1257
1258 MODULE_ALIAS("platform:imx-ipuv3");
1259 MODULE_DESCRIPTION("i.MX IPU v3 driver");
1260 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
1261 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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