2 * Copyright (c) 2010 Sascha Hauer <s.hauer@pengutronix.de>
3 * Copyright (C) 2005-2009 Freescale Semiconductor, Inc.
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.
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
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>
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>
32 #include <drm/drm_fourcc.h>
34 #include <video/imx-ipu-v3.h>
37 static inline u32 ipu_cm_read(struct ipu_soc *ipu, unsigned offset)
39 return readl(ipu->cm_reg + offset);
42 static inline void ipu_cm_write(struct ipu_soc *ipu, u32 value, unsigned offset)
44 writel(value, ipu->cm_reg + offset);
47 static inline u32 ipu_idmac_read(struct ipu_soc *ipu, unsigned offset)
49 return readl(ipu->idmac_reg + offset);
52 static inline void ipu_idmac_write(struct ipu_soc *ipu, u32 value,
55 writel(value, ipu->idmac_reg + offset);
58 void ipu_srm_dp_sync_update(struct ipu_soc *ipu)
62 val = ipu_cm_read(ipu, IPU_SRM_PRI2);
64 ipu_cm_write(ipu, val, IPU_SRM_PRI2);
66 EXPORT_SYMBOL_GPL(ipu_srm_dp_sync_update);
68 struct ipu_ch_param __iomem *ipu_get_cpmem(struct ipuv3_channel *channel)
70 struct ipu_soc *ipu = channel->ipu;
72 return ipu->cpmem_base + channel->num;
74 EXPORT_SYMBOL_GPL(ipu_get_cpmem);
76 void ipu_cpmem_set_high_priority(struct ipuv3_channel *channel)
78 struct ipu_soc *ipu = channel->ipu;
79 struct ipu_ch_param __iomem *p = ipu_get_cpmem(channel);
82 if (ipu->ipu_type == IPUV3EX)
83 ipu_ch_param_write_field(p, IPU_FIELD_ID, 1);
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));
89 EXPORT_SYMBOL_GPL(ipu_cpmem_set_high_priority);
91 void ipu_ch_param_write_field(struct ipu_ch_param __iomem *base, u32 wbs, u32 v)
93 u32 bit = (wbs >> 8) % 160;
94 u32 size = wbs & 0xff;
95 u32 word = (wbs >> 8) / 160;
98 u32 mask = (1 << size) - 1;
101 pr_debug("%s %d %d %d\n", __func__, word, bit , size);
103 val = readl(&base->word[word].data[i]);
104 val &= ~(mask << ofs);
106 writel(val, &base->word[word].data[i]);
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]);
115 EXPORT_SYMBOL_GPL(ipu_ch_param_write_field);
117 u32 ipu_ch_param_read_field(struct ipu_ch_param __iomem *base, u32 wbs)
119 u32 bit = (wbs >> 8) % 160;
120 u32 size = wbs & 0xff;
121 u32 word = (wbs >> 8) / 160;
124 u32 mask = (1 << size) - 1;
127 pr_debug("%s %d %d %d\n", __func__, word, bit , size);
129 val = (readl(&base->word[word].data[i]) >> ofs) & mask;
131 if ((bit + size - 1) / 32 > i) {
133 tmp = readl(&base->word[word].data[i + 1]);
134 tmp &= mask >> (ofs ? (32 - ofs) : 0);
135 val |= tmp << (ofs ? (32 - ofs) : 0);
140 EXPORT_SYMBOL_GPL(ipu_ch_param_read_field);
142 int ipu_cpmem_set_format_rgb(struct ipu_ch_param __iomem *p,
143 const struct ipu_rgb *rgb)
145 int bpp = 0, npb = 0, ro, go, bo, to;
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;
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);
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);
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);
169 switch (rgb->bits_per_pixel) {
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 */
195 EXPORT_SYMBOL_GPL(ipu_cpmem_set_format_rgb);
197 int ipu_cpmem_set_format_passthrough(struct ipu_ch_param __iomem *p,
200 int bpp = 0, npb = 0;
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 */
229 EXPORT_SYMBOL_GPL(ipu_cpmem_set_format_passthrough);
231 void ipu_cpmem_set_yuv_interleaved(struct ipu_ch_param __iomem *p,
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 */
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 */
247 EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_interleaved);
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)
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);
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);
265 EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar_full);
267 void ipu_cpmem_set_yuv_planar(struct ipu_ch_param __iomem *p, u32 pixel_format,
268 int stride, int height)
270 int u_offset, v_offset;
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,
284 EXPORT_SYMBOL_GPL(ipu_cpmem_set_yuv_planar);
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,
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,
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,
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,
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,
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,
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)
341 int ipu_cpmem_set_fmt(struct ipu_ch_param __iomem *cpmem, u32 drm_fourcc)
343 switch (drm_fourcc) {
344 case DRM_FORMAT_YUV420:
345 case DRM_FORMAT_YVU420:
347 ipu_ch_param_write_field(cpmem, IPU_FIELD_PFS, 2);
349 ipu_ch_param_write_field(cpmem, IPU_FIELD_NPB, 63);
351 case DRM_FORMAT_UYVY:
353 ipu_ch_param_write_field(cpmem, IPU_FIELD_BPP, 3);
355 ipu_ch_param_write_field(cpmem, IPU_FIELD_PFS, 0xA);
357 ipu_ch_param_write_field(cpmem, IPU_FIELD_NPB, 31);
359 case DRM_FORMAT_YUYV:
361 ipu_ch_param_write_field(cpmem, IPU_FIELD_BPP, 3);
363 ipu_ch_param_write_field(cpmem, IPU_FIELD_PFS, 0x8);
365 ipu_ch_param_write_field(cpmem, IPU_FIELD_NPB, 31);
367 case DRM_FORMAT_ABGR8888:
368 case DRM_FORMAT_XBGR8888:
369 ipu_cpmem_set_format_rgb(cpmem, &def_bgr_32);
371 case DRM_FORMAT_ARGB8888:
372 case DRM_FORMAT_XRGB8888:
373 ipu_cpmem_set_format_rgb(cpmem, &def_rgb_32);
375 case DRM_FORMAT_BGR888:
376 ipu_cpmem_set_format_rgb(cpmem, &def_bgr_24);
378 case DRM_FORMAT_RGB888:
379 ipu_cpmem_set_format_rgb(cpmem, &def_rgb_24);
381 case DRM_FORMAT_RGB565:
382 ipu_cpmem_set_format_rgb(cpmem, &def_rgb_16);
384 case DRM_FORMAT_BGR565:
385 ipu_cpmem_set_format_rgb(cpmem, &def_bgr_16);
393 EXPORT_SYMBOL_GPL(ipu_cpmem_set_fmt);
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.
405 static int v4l2_pix_fmt_to_drm_fourcc(u32 pixelformat)
407 switch (pixelformat) {
408 case V4L2_PIX_FMT_RGB565:
410 * Here we choose the 'corrected' interpretation of RGBP, a
411 * little-endian 16-bit word with the red component at the most
413 * g[2:0]b[4:0] r[4:0]g[5:3] <=> [16:0] R:G:B
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;
441 enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc)
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;
463 return IPUV3_COLORSPACE_UNKNOWN;
466 EXPORT_SYMBOL_GPL(ipu_drm_fourcc_to_colorspace);
468 int ipu_cpmem_set_image(struct ipu_ch_param __iomem *cpmem,
469 struct ipu_image *image)
471 struct v4l2_pix_format *pix = &image->pix;
472 int y_offset, u_offset, v_offset;
474 pr_debug("%s: resolution: %dx%d stride: %d\n",
475 __func__, pix->width, pix->height,
478 ipu_cpmem_set_resolution(cpmem, image->rect.width,
480 ipu_cpmem_set_stride(cpmem, pix->bytesperline);
482 ipu_cpmem_set_fmt(cpmem, v4l2_pix_fmt_to_drm_fourcc(pix->pixelformat));
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;
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);
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);
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);
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);
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);
526 EXPORT_SYMBOL_GPL(ipu_cpmem_set_image);
528 enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat)
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;
543 return IPUV3_COLORSPACE_UNKNOWN;
546 EXPORT_SYMBOL_GPL(ipu_pixelformat_to_colorspace);
548 struct ipuv3_channel *ipu_idmac_get(struct ipu_soc *ipu, unsigned num)
550 struct ipuv3_channel *channel;
552 dev_dbg(ipu->dev, "%s %d\n", __func__, num);
555 return ERR_PTR(-ENODEV);
557 mutex_lock(&ipu->channel_lock);
559 channel = &ipu->channel[num];
562 channel = ERR_PTR(-EBUSY);
566 channel->busy = true;
570 mutex_unlock(&ipu->channel_lock);
574 EXPORT_SYMBOL_GPL(ipu_idmac_get);
576 void ipu_idmac_put(struct ipuv3_channel *channel)
578 struct ipu_soc *ipu = channel->ipu;
580 dev_dbg(ipu->dev, "%s %d\n", __func__, channel->num);
582 mutex_lock(&ipu->channel_lock);
584 channel->busy = false;
586 mutex_unlock(&ipu->channel_lock);
588 EXPORT_SYMBOL_GPL(ipu_idmac_put);
590 #define idma_mask(ch) (1 << (ch & 0x1f))
592 void ipu_idmac_set_double_buffer(struct ipuv3_channel *channel,
595 struct ipu_soc *ipu = channel->ipu;
599 spin_lock_irqsave(&ipu->lock, flags);
601 reg = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
603 reg |= idma_mask(channel->num);
605 reg &= ~idma_mask(channel->num);
606 ipu_cm_write(ipu, reg, IPU_CHA_DB_MODE_SEL(channel->num));
608 spin_unlock_irqrestore(&ipu->lock, flags);
610 EXPORT_SYMBOL_GPL(ipu_idmac_set_double_buffer);
612 int ipu_module_enable(struct ipu_soc *ipu, u32 mask)
614 unsigned long lock_flags;
617 spin_lock_irqsave(&ipu->lock, lock_flags);
619 val = ipu_cm_read(ipu, IPU_DISP_GEN);
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;
626 ipu_cm_write(ipu, val, IPU_DISP_GEN);
628 val = ipu_cm_read(ipu, IPU_CONF);
630 ipu_cm_write(ipu, val, IPU_CONF);
632 spin_unlock_irqrestore(&ipu->lock, lock_flags);
636 EXPORT_SYMBOL_GPL(ipu_module_enable);
638 int ipu_module_disable(struct ipu_soc *ipu, u32 mask)
640 unsigned long lock_flags;
643 spin_lock_irqsave(&ipu->lock, lock_flags);
645 val = ipu_cm_read(ipu, IPU_CONF);
647 ipu_cm_write(ipu, val, IPU_CONF);
649 val = ipu_cm_read(ipu, IPU_DISP_GEN);
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;
656 ipu_cm_write(ipu, val, IPU_DISP_GEN);
658 spin_unlock_irqrestore(&ipu->lock, lock_flags);
662 EXPORT_SYMBOL_GPL(ipu_module_disable);
664 int ipu_csi_enable(struct ipu_soc *ipu, int csi)
666 return ipu_module_enable(ipu, csi ? IPU_CONF_CSI1_EN : IPU_CONF_CSI0_EN);
668 EXPORT_SYMBOL_GPL(ipu_csi_enable);
670 int ipu_csi_disable(struct ipu_soc *ipu, int csi)
672 return ipu_module_disable(ipu, csi ? IPU_CONF_CSI1_EN : IPU_CONF_CSI0_EN);
674 EXPORT_SYMBOL_GPL(ipu_csi_disable);
676 int ipu_smfc_enable(struct ipu_soc *ipu)
678 return ipu_module_enable(ipu, IPU_CONF_SMFC_EN);
680 EXPORT_SYMBOL_GPL(ipu_smfc_enable);
682 int ipu_smfc_disable(struct ipu_soc *ipu)
684 return ipu_module_disable(ipu, IPU_CONF_SMFC_EN);
686 EXPORT_SYMBOL_GPL(ipu_smfc_disable);
688 int ipu_idmac_get_current_buffer(struct ipuv3_channel *channel)
690 struct ipu_soc *ipu = channel->ipu;
691 unsigned int chno = channel->num;
693 return (ipu_cm_read(ipu, IPU_CHA_CUR_BUF(chno)) & idma_mask(chno)) ? 1 : 0;
695 EXPORT_SYMBOL_GPL(ipu_idmac_get_current_buffer);
697 void ipu_idmac_select_buffer(struct ipuv3_channel *channel, u32 buf_num)
699 struct ipu_soc *ipu = channel->ipu;
700 unsigned int chno = channel->num;
703 spin_lock_irqsave(&ipu->lock, flags);
705 /* Mark buffer as ready. */
707 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF0_RDY(chno));
709 ipu_cm_write(ipu, idma_mask(chno), IPU_CHA_BUF1_RDY(chno));
711 spin_unlock_irqrestore(&ipu->lock, flags);
713 EXPORT_SYMBOL_GPL(ipu_idmac_select_buffer);
715 int ipu_idmac_enable_channel(struct ipuv3_channel *channel)
717 struct ipu_soc *ipu = channel->ipu;
721 spin_lock_irqsave(&ipu->lock, flags);
723 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
724 val |= idma_mask(channel->num);
725 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
727 spin_unlock_irqrestore(&ipu->lock, flags);
731 EXPORT_SYMBOL_GPL(ipu_idmac_enable_channel);
733 int ipu_idmac_wait_busy(struct ipuv3_channel *channel, int ms)
735 struct ipu_soc *ipu = channel->ipu;
736 unsigned long timeout;
738 timeout = jiffies + msecs_to_jiffies(ms);
739 while (ipu_idmac_read(ipu, IDMAC_CHA_BUSY(channel->num)) &
740 idma_mask(channel->num)) {
741 if (time_after(jiffies, timeout))
748 EXPORT_SYMBOL_GPL(ipu_idmac_wait_busy);
750 int ipu_idmac_disable_channel(struct ipuv3_channel *channel)
752 struct ipu_soc *ipu = channel->ipu;
756 spin_lock_irqsave(&ipu->lock, flags);
758 /* Disable DMA channel(s) */
759 val = ipu_idmac_read(ipu, IDMAC_CHA_EN(channel->num));
760 val &= ~idma_mask(channel->num);
761 ipu_idmac_write(ipu, val, IDMAC_CHA_EN(channel->num));
763 /* Set channel buffers NOT to be ready */
764 ipu_cm_write(ipu, 0xf0000000, IPU_GPR); /* write one to clear */
766 if (ipu_cm_read(ipu, IPU_CHA_BUF0_RDY(channel->num)) &
767 idma_mask(channel->num)) {
768 ipu_cm_write(ipu, idma_mask(channel->num),
769 IPU_CHA_BUF0_RDY(channel->num));
772 if (ipu_cm_read(ipu, IPU_CHA_BUF1_RDY(channel->num)) &
773 idma_mask(channel->num)) {
774 ipu_cm_write(ipu, idma_mask(channel->num),
775 IPU_CHA_BUF1_RDY(channel->num));
778 ipu_cm_write(ipu, 0x0, IPU_GPR); /* write one to set */
780 /* Reset the double buffer */
781 val = ipu_cm_read(ipu, IPU_CHA_DB_MODE_SEL(channel->num));
782 val &= ~idma_mask(channel->num);
783 ipu_cm_write(ipu, val, IPU_CHA_DB_MODE_SEL(channel->num));
785 spin_unlock_irqrestore(&ipu->lock, flags);
789 EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel);
791 static int ipu_memory_reset(struct ipu_soc *ipu)
793 unsigned long timeout;
795 ipu_cm_write(ipu, 0x807FFFFF, IPU_MEM_RST);
797 timeout = jiffies + msecs_to_jiffies(1000);
798 while (ipu_cm_read(ipu, IPU_MEM_RST) & 0x80000000) {
799 if (time_after(jiffies, timeout))
809 unsigned long cm_ofs;
810 unsigned long cpmem_ofs;
811 unsigned long srm_ofs;
812 unsigned long tpm_ofs;
813 unsigned long disp0_ofs;
814 unsigned long disp1_ofs;
815 unsigned long dc_tmpl_ofs;
816 unsigned long vdi_ofs;
817 enum ipuv3_type type;
820 static struct ipu_devtype ipu_type_imx51 = {
822 .cm_ofs = 0x1e000000,
823 .cpmem_ofs = 0x1f000000,
824 .srm_ofs = 0x1f040000,
825 .tpm_ofs = 0x1f060000,
826 .disp0_ofs = 0x1e040000,
827 .disp1_ofs = 0x1e048000,
828 .dc_tmpl_ofs = 0x1f080000,
829 .vdi_ofs = 0x1e068000,
833 static struct ipu_devtype ipu_type_imx53 = {
835 .cm_ofs = 0x06000000,
836 .cpmem_ofs = 0x07000000,
837 .srm_ofs = 0x07040000,
838 .tpm_ofs = 0x07060000,
839 .disp0_ofs = 0x06040000,
840 .disp1_ofs = 0x06048000,
841 .dc_tmpl_ofs = 0x07080000,
842 .vdi_ofs = 0x06068000,
846 static struct ipu_devtype ipu_type_imx6q = {
848 .cm_ofs = 0x00200000,
849 .cpmem_ofs = 0x00300000,
850 .srm_ofs = 0x00340000,
851 .tpm_ofs = 0x00360000,
852 .disp0_ofs = 0x00240000,
853 .disp1_ofs = 0x00248000,
854 .dc_tmpl_ofs = 0x00380000,
855 .vdi_ofs = 0x00268000,
859 static const struct of_device_id imx_ipu_dt_ids[] = {
860 { .compatible = "fsl,imx51-ipu", .data = &ipu_type_imx51, },
861 { .compatible = "fsl,imx53-ipu", .data = &ipu_type_imx53, },
862 { .compatible = "fsl,imx6q-ipu", .data = &ipu_type_imx6q, },
865 MODULE_DEVICE_TABLE(of, imx_ipu_dt_ids);
867 static int ipu_submodules_init(struct ipu_soc *ipu,
868 struct platform_device *pdev, unsigned long ipu_base,
873 struct device *dev = &pdev->dev;
874 const struct ipu_devtype *devtype = ipu->devtype;
876 ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs,
877 IPU_CONF_DI0_EN, ipu_clk);
883 ret = ipu_di_init(ipu, dev, 1, ipu_base + devtype->disp1_ofs,
884 IPU_CONF_DI1_EN, ipu_clk);
890 ret = ipu_dc_init(ipu, dev, ipu_base + devtype->cm_ofs +
891 IPU_CM_DC_REG_OFS, ipu_base + devtype->dc_tmpl_ofs);
893 unit = "dc_template";
897 ret = ipu_dmfc_init(ipu, dev, ipu_base +
898 devtype->cm_ofs + IPU_CM_DMFC_REG_OFS, ipu_clk);
904 ret = ipu_dp_init(ipu, dev, ipu_base + devtype->srm_ofs);
910 ret = ipu_smfc_init(ipu, dev, ipu_base +
911 devtype->cm_ofs + IPU_CM_SMFC_REG_OFS);
930 dev_err(&pdev->dev, "init %s failed with %d\n", unit, ret);
934 static void ipu_irq_handle(struct ipu_soc *ipu, const int *regs, int num_regs)
936 unsigned long status;
939 for (i = 0; i < num_regs; i++) {
941 status = ipu_cm_read(ipu, IPU_INT_STAT(regs[i]));
942 status &= ipu_cm_read(ipu, IPU_INT_CTRL(regs[i]));
944 for_each_set_bit(bit, &status, 32) {
945 irq = irq_linear_revmap(ipu->domain, regs[i] * 32 + bit);
947 generic_handle_irq(irq);
952 static void ipu_irq_handler(unsigned int irq, struct irq_desc *desc)
954 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
955 const int int_reg[] = { 0, 1, 2, 3, 10, 11, 12, 13, 14};
956 struct irq_chip *chip = irq_get_chip(irq);
958 chained_irq_enter(chip, desc);
960 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
962 chained_irq_exit(chip, desc);
965 static void ipu_err_irq_handler(unsigned int irq, struct irq_desc *desc)
967 struct ipu_soc *ipu = irq_desc_get_handler_data(desc);
968 const int int_reg[] = { 4, 5, 8, 9};
969 struct irq_chip *chip = irq_get_chip(irq);
971 chained_irq_enter(chip, desc);
973 ipu_irq_handle(ipu, int_reg, ARRAY_SIZE(int_reg));
975 chained_irq_exit(chip, desc);
978 int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel,
979 enum ipu_channel_irq irq_type)
981 int irq = irq_linear_revmap(ipu->domain, irq_type + channel->num);
984 irq = irq_create_mapping(ipu->domain, irq_type + channel->num);
988 EXPORT_SYMBOL_GPL(ipu_idmac_channel_irq);
990 static void ipu_submodules_exit(struct ipu_soc *ipu)
1000 static int platform_remove_devices_fn(struct device *dev, void *unused)
1002 struct platform_device *pdev = to_platform_device(dev);
1004 platform_device_unregister(pdev);
1009 static void platform_device_unregister_children(struct platform_device *pdev)
1011 device_for_each_child(&pdev->dev, NULL, platform_remove_devices_fn);
1014 struct ipu_platform_reg {
1015 struct ipu_client_platformdata pdata;
1020 static const struct ipu_platform_reg client_reg[] = {
1025 .dp = IPU_DP_FLOW_SYNC_BG,
1026 .dma[0] = IPUV3_CHANNEL_MEM_BG_SYNC,
1027 .dma[1] = IPUV3_CHANNEL_MEM_FG_SYNC,
1029 .name = "imx-ipuv3-crtc",
1035 .dma[0] = IPUV3_CHANNEL_MEM_DC_SYNC,
1038 .name = "imx-ipuv3-crtc",
1042 .dma[0] = IPUV3_CHANNEL_CSI0,
1045 .reg_offset = IPU_CM_CSI0_REG_OFS,
1046 .name = "imx-ipuv3-camera",
1050 .dma[0] = IPUV3_CHANNEL_CSI1,
1053 .reg_offset = IPU_CM_CSI1_REG_OFS,
1054 .name = "imx-ipuv3-camera",
1058 static DEFINE_MUTEX(ipu_client_id_mutex);
1059 static int ipu_client_id;
1061 static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
1063 struct device *dev = ipu->dev;
1067 mutex_lock(&ipu_client_id_mutex);
1069 ipu_client_id += ARRAY_SIZE(client_reg);
1070 mutex_unlock(&ipu_client_id_mutex);
1072 for (i = 0; i < ARRAY_SIZE(client_reg); i++) {
1073 const struct ipu_platform_reg *reg = &client_reg[i];
1074 struct platform_device *pdev;
1075 struct resource res;
1077 if (reg->reg_offset) {
1078 memset(&res, 0, sizeof(res));
1079 res.flags = IORESOURCE_MEM;
1080 res.start = ipu_base + ipu->devtype->cm_ofs + reg->reg_offset;
1081 res.end = res.start + PAGE_SIZE - 1;
1082 pdev = platform_device_register_resndata(dev, reg->name,
1083 id++, &res, 1, ®->pdata, sizeof(reg->pdata));
1085 pdev = platform_device_register_data(dev, reg->name,
1086 id++, ®->pdata, sizeof(reg->pdata));
1096 platform_device_unregister_children(to_platform_device(dev));
1102 static int ipu_irq_init(struct ipu_soc *ipu)
1104 struct irq_chip_generic *gc;
1105 struct irq_chip_type *ct;
1106 unsigned long unused[IPU_NUM_IRQS / 32] = {
1107 0x400100d0, 0xffe000fd,
1108 0x400100d0, 0xffe000fd,
1109 0x400100d0, 0xffe000fd,
1110 0x4077ffff, 0xffe7e1fd,
1111 0x23fffffe, 0x8880fff0,
1112 0xf98fe7d0, 0xfff81fff,
1113 0x400100d0, 0xffe000fd,
1118 ipu->domain = irq_domain_add_linear(ipu->dev->of_node, IPU_NUM_IRQS,
1119 &irq_generic_chip_ops, ipu);
1121 dev_err(ipu->dev, "failed to add irq domain\n");
1125 ret = irq_alloc_domain_generic_chips(ipu->domain, 32, 1, "IPU",
1126 handle_level_irq, 0, IRQF_VALID, 0);
1128 dev_err(ipu->dev, "failed to alloc generic irq chips\n");
1129 irq_domain_remove(ipu->domain);
1133 for (i = 0; i < IPU_NUM_IRQS; i += 32) {
1134 gc = irq_get_domain_generic_chip(ipu->domain, i);
1135 gc->reg_base = ipu->cm_reg;
1136 gc->unused = unused[i / 32];
1137 ct = gc->chip_types;
1138 ct->chip.irq_ack = irq_gc_ack_set_bit;
1139 ct->chip.irq_mask = irq_gc_mask_clr_bit;
1140 ct->chip.irq_unmask = irq_gc_mask_set_bit;
1141 ct->regs.ack = IPU_INT_STAT(i / 32);
1142 ct->regs.mask = IPU_INT_CTRL(i / 32);
1145 irq_set_chained_handler(ipu->irq_sync, ipu_irq_handler);
1146 irq_set_handler_data(ipu->irq_sync, ipu);
1147 irq_set_chained_handler(ipu->irq_err, ipu_err_irq_handler);
1148 irq_set_handler_data(ipu->irq_err, ipu);
1153 static void ipu_irq_exit(struct ipu_soc *ipu)
1157 irq_set_chained_handler(ipu->irq_err, NULL);
1158 irq_set_handler_data(ipu->irq_err, NULL);
1159 irq_set_chained_handler(ipu->irq_sync, NULL);
1160 irq_set_handler_data(ipu->irq_sync, NULL);
1162 /* TODO: remove irq_domain_generic_chips */
1164 for (i = 0; i < IPU_NUM_IRQS; i++) {
1165 irq = irq_linear_revmap(ipu->domain, i);
1167 irq_dispose_mapping(irq);
1170 irq_domain_remove(ipu->domain);
1173 static int ipu_probe(struct platform_device *pdev)
1175 const struct of_device_id *of_id =
1176 of_match_device(imx_ipu_dt_ids, &pdev->dev);
1177 struct ipu_soc *ipu;
1178 struct resource *res;
1179 unsigned long ipu_base;
1180 int i, ret, irq_sync, irq_err;
1181 const struct ipu_devtype *devtype;
1183 devtype = of_id->data;
1185 irq_sync = platform_get_irq(pdev, 0);
1186 irq_err = platform_get_irq(pdev, 1);
1187 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1189 dev_dbg(&pdev->dev, "irq_sync: %d irq_err: %d\n",
1192 if (!res || irq_sync < 0 || irq_err < 0)
1195 ipu_base = res->start;
1197 ipu = devm_kzalloc(&pdev->dev, sizeof(*ipu), GFP_KERNEL);
1201 for (i = 0; i < 64; i++)
1202 ipu->channel[i].ipu = ipu;
1203 ipu->devtype = devtype;
1204 ipu->ipu_type = devtype->type;
1206 spin_lock_init(&ipu->lock);
1207 mutex_init(&ipu->channel_lock);
1209 dev_dbg(&pdev->dev, "cm_reg: 0x%08lx\n",
1210 ipu_base + devtype->cm_ofs);
1211 dev_dbg(&pdev->dev, "idmac: 0x%08lx\n",
1212 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS);
1213 dev_dbg(&pdev->dev, "cpmem: 0x%08lx\n",
1214 ipu_base + devtype->cpmem_ofs);
1215 dev_dbg(&pdev->dev, "disp0: 0x%08lx\n",
1216 ipu_base + devtype->disp0_ofs);
1217 dev_dbg(&pdev->dev, "disp1: 0x%08lx\n",
1218 ipu_base + devtype->disp1_ofs);
1219 dev_dbg(&pdev->dev, "srm: 0x%08lx\n",
1220 ipu_base + devtype->srm_ofs);
1221 dev_dbg(&pdev->dev, "tpm: 0x%08lx\n",
1222 ipu_base + devtype->tpm_ofs);
1223 dev_dbg(&pdev->dev, "dc: 0x%08lx\n",
1224 ipu_base + devtype->cm_ofs + IPU_CM_DC_REG_OFS);
1225 dev_dbg(&pdev->dev, "ic: 0x%08lx\n",
1226 ipu_base + devtype->cm_ofs + IPU_CM_IC_REG_OFS);
1227 dev_dbg(&pdev->dev, "dmfc: 0x%08lx\n",
1228 ipu_base + devtype->cm_ofs + IPU_CM_DMFC_REG_OFS);
1229 dev_dbg(&pdev->dev, "vdi: 0x%08lx\n",
1230 ipu_base + devtype->vdi_ofs);
1232 ipu->cm_reg = devm_ioremap(&pdev->dev,
1233 ipu_base + devtype->cm_ofs, PAGE_SIZE);
1234 ipu->idmac_reg = devm_ioremap(&pdev->dev,
1235 ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS,
1237 ipu->cpmem_base = devm_ioremap(&pdev->dev,
1238 ipu_base + devtype->cpmem_ofs, PAGE_SIZE);
1240 if (!ipu->cm_reg || !ipu->idmac_reg || !ipu->cpmem_base)
1243 ipu->clk = devm_clk_get(&pdev->dev, "bus");
1244 if (IS_ERR(ipu->clk)) {
1245 ret = PTR_ERR(ipu->clk);
1246 dev_err(&pdev->dev, "clk_get failed with %d", ret);
1250 platform_set_drvdata(pdev, ipu);
1252 ret = clk_prepare_enable(ipu->clk);
1254 dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret);
1258 ipu->dev = &pdev->dev;
1259 ipu->irq_sync = irq_sync;
1260 ipu->irq_err = irq_err;
1262 ret = ipu_irq_init(ipu);
1264 goto out_failed_irq;
1266 ret = device_reset(&pdev->dev);
1268 dev_err(&pdev->dev, "failed to reset: %d\n", ret);
1269 goto out_failed_reset;
1271 ret = ipu_memory_reset(ipu);
1273 goto out_failed_reset;
1275 /* Set MCU_T to divide MCU access window into 2 */
1276 ipu_cm_write(ipu, 0x00400000L | (IPU_MCU_T_DEFAULT << 18),
1279 ret = ipu_submodules_init(ipu, pdev, ipu_base, ipu->clk);
1281 goto failed_submodules_init;
1283 ret = ipu_add_client_devices(ipu, ipu_base);
1285 dev_err(&pdev->dev, "adding client devices failed with %d\n",
1287 goto failed_add_clients;
1290 dev_info(&pdev->dev, "%s probed\n", devtype->name);
1295 ipu_submodules_exit(ipu);
1296 failed_submodules_init:
1300 clk_disable_unprepare(ipu->clk);
1304 static int ipu_remove(struct platform_device *pdev)
1306 struct ipu_soc *ipu = platform_get_drvdata(pdev);
1308 platform_device_unregister_children(pdev);
1309 ipu_submodules_exit(ipu);
1312 clk_disable_unprepare(ipu->clk);
1317 static struct platform_driver imx_ipu_driver = {
1319 .name = "imx-ipuv3",
1320 .of_match_table = imx_ipu_dt_ids,
1323 .remove = ipu_remove,
1326 module_platform_driver(imx_ipu_driver);
1328 MODULE_ALIAS("platform:imx-ipuv3");
1329 MODULE_DESCRIPTION("i.MX IPU v3 driver");
1330 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
1331 MODULE_LICENSE("GPL");