2 * sh-mobile VEU mem2mem driver
4 * Copyright (C) 2012 Renesas Electronics Corporation
5 * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de>
6 * Copyright (C) 2008 Magnus Damm
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the version 2 of the GNU General Public License as
10 * published by the Free Software Foundation
13 #include <linux/err.h>
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/interrupt.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/slab.h>
22 #include <linux/types.h>
23 #include <linux/videodev2.h>
25 #include <media/v4l2-dev.h>
26 #include <media/v4l2-device.h>
27 #include <media/v4l2-ioctl.h>
28 #include <media/v4l2-mem2mem.h>
29 #include <media/videobuf2-dma-contig.h>
31 #define VEU_STR 0x00 /* start register */
32 #define VEU_SWR 0x10 /* src: line length */
33 #define VEU_SSR 0x14 /* src: image size */
34 #define VEU_SAYR 0x18 /* src: y/rgb plane address */
35 #define VEU_SACR 0x1c /* src: c plane address */
36 #define VEU_BSSR 0x20 /* bundle mode register */
37 #define VEU_EDWR 0x30 /* dst: line length */
38 #define VEU_DAYR 0x34 /* dst: y/rgb plane address */
39 #define VEU_DACR 0x38 /* dst: c plane address */
40 #define VEU_TRCR 0x50 /* transform control */
41 #define VEU_RFCR 0x54 /* resize scale */
42 #define VEU_RFSR 0x58 /* resize clip */
43 #define VEU_ENHR 0x5c /* enhance */
44 #define VEU_FMCR 0x70 /* filter mode */
45 #define VEU_VTCR 0x74 /* lowpass vertical */
46 #define VEU_HTCR 0x78 /* lowpass horizontal */
47 #define VEU_APCR 0x80 /* color match */
48 #define VEU_ECCR 0x84 /* color replace */
49 #define VEU_AFXR 0x90 /* fixed mode */
50 #define VEU_SWPR 0x94 /* swap */
51 #define VEU_EIER 0xa0 /* interrupt mask */
52 #define VEU_EVTR 0xa4 /* interrupt event */
53 #define VEU_STAR 0xb0 /* status */
54 #define VEU_BSRR 0xb4 /* reset */
56 #define VEU_MCR00 0x200 /* color conversion matrix coefficient 00 */
57 #define VEU_MCR01 0x204 /* color conversion matrix coefficient 01 */
58 #define VEU_MCR02 0x208 /* color conversion matrix coefficient 02 */
59 #define VEU_MCR10 0x20c /* color conversion matrix coefficient 10 */
60 #define VEU_MCR11 0x210 /* color conversion matrix coefficient 11 */
61 #define VEU_MCR12 0x214 /* color conversion matrix coefficient 12 */
62 #define VEU_MCR20 0x218 /* color conversion matrix coefficient 20 */
63 #define VEU_MCR21 0x21c /* color conversion matrix coefficient 21 */
64 #define VEU_MCR22 0x220 /* color conversion matrix coefficient 22 */
65 #define VEU_COFFR 0x224 /* color conversion offset */
66 #define VEU_CBR 0x228 /* color conversion clip */
69 * 4092x4092 max size is the normal case. In some cases it can be reduced to
70 * 2048x2048, in other cases it can be 4092x8188 or even 8188x8188.
78 /* 3 buffers of 2048 x 1536 - 3 megapixels @ 16bpp */
79 #define VIDEO_MEM_LIMIT ALIGN(2048 * 1536 * 2 * 3, 1024 * 1024)
81 #define MEM2MEM_DEF_TRANSLEN 1
86 struct sh_veu_dev *veu_dev;
90 struct sh_veu_format {
97 /* video data format */
99 /* Replace with v4l2_rect */
100 struct v4l2_rect frame;
101 unsigned int bytesperline;
102 unsigned int offset_y;
103 unsigned int offset_c;
104 const struct sh_veu_format *fmt;
108 struct v4l2_device v4l2_dev;
109 struct video_device vdev;
110 struct v4l2_m2m_dev *m2m_dev;
112 struct v4l2_m2m_ctx *m2m_ctx;
113 struct sh_veu_vfmt vfmt_out;
114 struct sh_veu_vfmt vfmt_in;
115 /* Only single user per direction so far */
116 struct sh_veu_file *capture;
117 struct sh_veu_file *output;
118 struct mutex fop_lock;
120 struct vb2_alloc_ctx *alloc_ctx;
123 unsigned int xaction;
127 enum sh_veu_fmt_idx {
138 #define VGA_WIDTH 640
139 #define VGA_HEIGHT 480
141 #define DEFAULT_IN_WIDTH VGA_WIDTH
142 #define DEFAULT_IN_HEIGHT VGA_HEIGHT
143 #define DEFAULT_IN_FMTIDX SH_VEU_FMT_NV12
144 #define DEFAULT_OUT_WIDTH VGA_WIDTH
145 #define DEFAULT_OUT_HEIGHT VGA_HEIGHT
146 #define DEFAULT_OUT_FMTIDX SH_VEU_FMT_RGB565
149 * Alignment: Y-plane should be 4-byte aligned for NV12 and NV16, and 8-byte
152 static const struct sh_veu_format sh_veu_fmt[] = {
153 [SH_VEU_FMT_NV12] = { .ydepth = 8, .depth = 12, .name = "NV12", .fourcc = V4L2_PIX_FMT_NV12 },
154 [SH_VEU_FMT_NV16] = { .ydepth = 8, .depth = 16, .name = "NV16", .fourcc = V4L2_PIX_FMT_NV16 },
155 [SH_VEU_FMT_NV24] = { .ydepth = 8, .depth = 24, .name = "NV24", .fourcc = V4L2_PIX_FMT_NV24 },
156 [SH_VEU_FMT_RGB332] = { .ydepth = 8, .depth = 8, .name = "RGB332", .fourcc = V4L2_PIX_FMT_RGB332 },
157 [SH_VEU_FMT_RGB444] = { .ydepth = 16, .depth = 16, .name = "RGB444", .fourcc = V4L2_PIX_FMT_RGB444 },
158 [SH_VEU_FMT_RGB565] = { .ydepth = 16, .depth = 16, .name = "RGB565", .fourcc = V4L2_PIX_FMT_RGB565 },
159 [SH_VEU_FMT_RGB666] = { .ydepth = 32, .depth = 32, .name = "BGR666", .fourcc = V4L2_PIX_FMT_BGR666 },
160 [SH_VEU_FMT_RGB24] = { .ydepth = 24, .depth = 24, .name = "RGB24", .fourcc = V4L2_PIX_FMT_RGB24 },
163 #define DEFAULT_IN_VFMT (struct sh_veu_vfmt){ \
165 .width = VGA_WIDTH, \
166 .height = VGA_HEIGHT, \
168 .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_IN_FMTIDX].ydepth) >> 3, \
169 .fmt = &sh_veu_fmt[DEFAULT_IN_FMTIDX], \
172 #define DEFAULT_OUT_VFMT (struct sh_veu_vfmt){ \
174 .width = VGA_WIDTH, \
175 .height = VGA_HEIGHT, \
177 .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_OUT_FMTIDX].ydepth) >> 3, \
178 .fmt = &sh_veu_fmt[DEFAULT_OUT_FMTIDX], \
182 * TODO: add support for further output formats:
192 static const int sh_veu_fmt_out[] = {
197 * TODO: add support for further input formats:
204 static const int sh_veu_fmt_in[] = {
208 static enum v4l2_colorspace sh_veu_4cc2cspace(u32 fourcc)
213 case V4L2_PIX_FMT_NV12:
214 case V4L2_PIX_FMT_NV16:
215 case V4L2_PIX_FMT_NV24:
216 return V4L2_COLORSPACE_JPEG;
217 case V4L2_PIX_FMT_RGB332:
218 case V4L2_PIX_FMT_RGB444:
219 case V4L2_PIX_FMT_RGB565:
220 case V4L2_PIX_FMT_BGR666:
221 case V4L2_PIX_FMT_RGB24:
222 return V4L2_COLORSPACE_SRGB;
226 static u32 sh_veu_reg_read(struct sh_veu_dev *veu, unsigned int reg)
228 return ioread32(veu->base + reg);
231 static void sh_veu_reg_write(struct sh_veu_dev *veu, unsigned int reg,
234 iowrite32(value, veu->base + reg);
237 /* ========== mem2mem callbacks ========== */
239 static void sh_veu_job_abort(void *priv)
241 struct sh_veu_dev *veu = priv;
243 /* Will cancel the transaction in the next interrupt handler */
244 veu->aborting = true;
247 static void sh_veu_lock(void *priv)
249 struct sh_veu_dev *veu = priv;
251 mutex_lock(&veu->fop_lock);
254 static void sh_veu_unlock(void *priv)
256 struct sh_veu_dev *veu = priv;
258 mutex_unlock(&veu->fop_lock);
261 static void sh_veu_process(struct sh_veu_dev *veu,
262 struct vb2_buffer *src_buf,
263 struct vb2_buffer *dst_buf)
265 dma_addr_t addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
267 sh_veu_reg_write(veu, VEU_DAYR, addr + veu->vfmt_out.offset_y);
268 sh_veu_reg_write(veu, VEU_DACR, veu->vfmt_out.offset_c ?
269 addr + veu->vfmt_out.offset_c : 0);
270 dev_dbg(veu->dev, "%s(): dst base %lx, y: %x, c: %x\n", __func__,
272 veu->vfmt_out.offset_y, veu->vfmt_out.offset_c);
274 addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
275 sh_veu_reg_write(veu, VEU_SAYR, addr + veu->vfmt_in.offset_y);
276 sh_veu_reg_write(veu, VEU_SACR, veu->vfmt_in.offset_c ?
277 addr + veu->vfmt_in.offset_c : 0);
278 dev_dbg(veu->dev, "%s(): src base %lx, y: %x, c: %x\n", __func__,
280 veu->vfmt_in.offset_y, veu->vfmt_in.offset_c);
282 sh_veu_reg_write(veu, VEU_STR, 1);
284 sh_veu_reg_write(veu, VEU_EIER, 1); /* enable interrupt in VEU */
288 * sh_veu_device_run() - prepares and starts the device
290 * This will be called by the framework when it decides to schedule a particular
293 static void sh_veu_device_run(void *priv)
295 struct sh_veu_dev *veu = priv;
296 struct vb2_buffer *src_buf, *dst_buf;
298 src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx);
299 dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx);
301 if (src_buf && dst_buf)
302 sh_veu_process(veu, src_buf, dst_buf);
305 /* ========== video ioctls ========== */
307 static bool sh_veu_is_streamer(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
308 enum v4l2_buf_type type)
310 return (type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
311 veu_file == veu->capture) ||
312 (type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
313 veu_file == veu->output);
316 static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
317 struct vb2_queue *dst_vq);
320 * It is not unusual to have video nodes open()ed multiple times. While some
321 * V4L2 operations are non-intrusive, like querying formats and various
322 * parameters, others, like setting formats, starting and stopping streaming,
323 * queuing and dequeuing buffers, directly affect hardware configuration and /
324 * or execution. This function verifies availability of the requested interface
325 * and, if available, reserves it for the requesting user.
327 static int sh_veu_stream_init(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
328 enum v4l2_buf_type type)
330 struct sh_veu_file **stream;
333 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
334 stream = &veu->capture;
336 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
337 stream = &veu->output;
343 if (*stream == veu_file)
354 static int sh_veu_context_init(struct sh_veu_dev *veu)
359 veu->m2m_ctx = v4l2_m2m_ctx_init(veu->m2m_dev, veu,
362 if (IS_ERR(veu->m2m_ctx))
363 return PTR_ERR(veu->m2m_ctx);
368 static int sh_veu_querycap(struct file *file, void *priv,
369 struct v4l2_capability *cap)
371 strlcpy(cap->driver, "sh-veu", sizeof(cap->driver));
372 strlcpy(cap->card, "sh-mobile VEU", sizeof(cap->card));
373 strlcpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info));
374 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
375 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
380 static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num)
382 if (f->index >= fmt_num)
385 strlcpy(f->description, sh_veu_fmt[fmt[f->index]].name, sizeof(f->description));
386 f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc;
390 static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv,
391 struct v4l2_fmtdesc *f)
393 return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out));
396 static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv,
397 struct v4l2_fmtdesc *f)
399 return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in));
402 static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu,
403 enum v4l2_buf_type type)
406 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
407 return &veu->vfmt_out;
408 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
409 return &veu->vfmt_in;
415 static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
417 struct v4l2_pix_format *pix = &f->fmt.pix;
418 struct sh_veu_dev *veu = veu_file->veu_dev;
419 struct sh_veu_vfmt *vfmt;
421 vfmt = sh_veu_get_vfmt(veu, f->type);
423 pix->width = vfmt->frame.width;
424 pix->height = vfmt->frame.height;
425 pix->field = V4L2_FIELD_NONE;
426 pix->pixelformat = vfmt->fmt->fourcc;
427 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
428 pix->bytesperline = vfmt->bytesperline;
429 pix->sizeimage = vfmt->bytesperline * pix->height *
430 vfmt->fmt->depth / vfmt->fmt->ydepth;
432 dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__,
433 f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat);
438 static int sh_veu_g_fmt_vid_out(struct file *file, void *priv,
439 struct v4l2_format *f)
441 return sh_veu_g_fmt(priv, f);
444 static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv,
445 struct v4l2_format *f)
447 return sh_veu_g_fmt(priv, f);
450 static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt)
452 struct v4l2_pix_format *pix = &f->fmt.pix;
453 unsigned int y_bytes_used;
456 * V4L2 specification suggests, that the driver should correct the
457 * format struct if any of the dimensions is unsupported
459 switch (pix->field) {
462 pix->field = V4L2_FIELD_NONE;
463 /* fall through: continue handling V4L2_FIELD_NONE */
464 case V4L2_FIELD_NONE:
468 v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W,
469 &pix->height, MIN_H, MAX_H, 0, 0);
471 y_bytes_used = (pix->width * fmt->ydepth) >> 3;
473 if (pix->bytesperline < y_bytes_used)
474 pix->bytesperline = y_bytes_used;
475 pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth;
477 pix->pixelformat = fmt->fourcc;
478 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
481 pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage);
486 static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f)
491 pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field);
494 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
495 fmt = sh_veu_fmt_out;
496 n = ARRAY_SIZE(sh_veu_fmt_out);
497 dflt = DEFAULT_OUT_FMTIDX;
499 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
502 n = ARRAY_SIZE(sh_veu_fmt_in);
503 dflt = DEFAULT_IN_FMTIDX;
507 for (i = 0; i < n; i++)
508 if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat)
509 return &sh_veu_fmt[fmt[i]];
511 return &sh_veu_fmt[dflt];
514 static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv,
515 struct v4l2_format *f)
517 const struct sh_veu_format *fmt;
519 fmt = sh_veu_find_fmt(f);
521 /* wrong buffer type */
524 return sh_veu_try_fmt(f, fmt);
527 static int sh_veu_try_fmt_vid_out(struct file *file, void *priv,
528 struct v4l2_format *f)
530 const struct sh_veu_format *fmt;
532 fmt = sh_veu_find_fmt(f);
534 /* wrong buffer type */
537 return sh_veu_try_fmt(f, fmt);
540 static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt)
542 /* dst_left and dst_top validity will be verified in CROP / COMPOSE */
543 unsigned int left = vfmt->frame.left & ~0x03;
544 unsigned int top = vfmt->frame.top;
545 dma_addr_t offset = ((left * veu->vfmt_out.fmt->depth) >> 3) +
546 top * veu->vfmt_out.bytesperline;
549 vfmt->offset_y = offset;
551 switch (vfmt->fmt->fourcc) {
552 case V4L2_PIX_FMT_NV12:
553 case V4L2_PIX_FMT_NV16:
554 case V4L2_PIX_FMT_NV24:
555 y_line = ALIGN(vfmt->frame.width, 16);
556 vfmt->offset_c = offset + y_line * vfmt->frame.height;
558 case V4L2_PIX_FMT_RGB332:
559 case V4L2_PIX_FMT_RGB444:
560 case V4L2_PIX_FMT_RGB565:
561 case V4L2_PIX_FMT_BGR666:
562 case V4L2_PIX_FMT_RGB24:
570 static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
572 struct v4l2_pix_format *pix = &f->fmt.pix;
573 struct sh_veu_dev *veu = veu_file->veu_dev;
574 struct sh_veu_vfmt *vfmt;
575 struct vb2_queue *vq;
576 int ret = sh_veu_context_init(veu);
580 vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type);
584 if (vb2_is_busy(vq)) {
585 v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__);
589 vfmt = sh_veu_get_vfmt(veu, f->type);
590 /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */
592 vfmt->fmt = sh_veu_find_fmt(f);
593 /* vfmt->fmt != NULL following the same argument as above */
594 vfmt->frame.width = pix->width;
595 vfmt->frame.height = pix->height;
596 vfmt->bytesperline = pix->bytesperline;
598 sh_veu_colour_offset(veu, vfmt);
601 * We could also verify and require configuration only if any parameters
602 * actually have changed, but it is unlikely, that the user requests the
603 * same configuration several times without closing the device.
605 veu_file->cfg_needed = true;
608 "Setting format for type %d, wxh: %dx%d, fmt: %x\n",
609 f->type, pix->width, pix->height, vfmt->fmt->fourcc);
614 static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv,
615 struct v4l2_format *f)
617 int ret = sh_veu_try_fmt_vid_cap(file, priv, f);
621 return sh_veu_s_fmt(priv, f);
624 static int sh_veu_s_fmt_vid_out(struct file *file, void *priv,
625 struct v4l2_format *f)
627 int ret = sh_veu_try_fmt_vid_out(file, priv, f);
631 return sh_veu_s_fmt(priv, f);
634 static int sh_veu_reqbufs(struct file *file, void *priv,
635 struct v4l2_requestbuffers *reqbufs)
637 struct sh_veu_file *veu_file = priv;
638 struct sh_veu_dev *veu = veu_file->veu_dev;
639 int ret = sh_veu_context_init(veu);
643 ret = sh_veu_stream_init(veu, veu_file, reqbufs->type);
647 return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs);
650 static int sh_veu_querybuf(struct file *file, void *priv,
651 struct v4l2_buffer *buf)
653 struct sh_veu_file *veu_file = priv;
655 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
658 return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf);
661 static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
663 struct sh_veu_file *veu_file = priv;
665 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
666 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
669 return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf);
672 static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
674 struct sh_veu_file *veu_file = priv;
676 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
677 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
680 return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf);
683 static void sh_veu_calc_scale(struct sh_veu_dev *veu,
684 int size_in, int size_out, int crop_out,
685 u32 *mant, u32 *frac, u32 *rep)
689 /* calculate FRAC and MANT */
690 *rep = *mant = *frac = 0;
692 if (size_in == size_out) {
693 if (crop_out != size_out)
694 *mant = 1; /* needed for cropping */
698 /* VEU2H special upscale */
699 if (veu->is_2h && size_out > size_in) {
700 u32 fixpoint = (4096 * size_in) / size_out;
701 *mant = fixpoint / 4096;
702 *frac = (fixpoint - (*mant * 4096)) & ~0x07;
719 fixpoint = (4096 * (size_in - 1)) / (size_out + 1);
720 *mant = fixpoint / 4096;
721 *frac = fixpoint - (*mant * 4096);
725 * FIXME: do we really have to round down twice in the
729 if (size_out > size_in)
730 *frac -= 8; /* round down if scaling up */
732 *frac += 8; /* round up if scaling down */
736 static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu,
737 int size_in, int size_out, int crop_out)
739 u32 mant, frac, value, rep;
741 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
744 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) |
745 (((mant << 12) | frac) << 16);
747 sh_veu_reg_write(veu, VEU_RFCR, value);
750 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) |
751 (((rep << 12) | crop_out) << 16);
753 sh_veu_reg_write(veu, VEU_RFSR, value);
755 return ALIGN((size_in * crop_out) / size_out, 4);
758 static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu,
759 int size_in, int size_out, int crop_out)
761 u32 mant, frac, value, rep;
763 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
766 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) |
769 sh_veu_reg_write(veu, VEU_RFCR, value);
772 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) |
773 (rep << 12) | crop_out;
775 sh_veu_reg_write(veu, VEU_RFSR, value);
777 return ALIGN((size_in * crop_out) / size_out, 4);
780 static void sh_veu_configure(struct sh_veu_dev *veu)
782 u32 src_width, src_stride, src_height;
783 u32 dst_width, dst_stride, dst_height;
787 sh_veu_reg_write(veu, VEU_BSRR, 0x100);
789 src_width = veu->vfmt_in.frame.width;
790 src_height = veu->vfmt_in.frame.height;
791 src_stride = ALIGN(veu->vfmt_in.frame.width, 16);
793 dst_width = real_w = veu->vfmt_out.frame.width;
794 dst_height = real_h = veu->vfmt_out.frame.height;
795 /* Datasheet is unclear - whether it's always number of bytes or not */
796 dst_stride = veu->vfmt_out.bytesperline;
799 * So far real_w == dst_width && real_h == dst_height, but it wasn't
800 * necessarily the case in the original vidix driver, so, it may change
801 * here in the future too.
803 src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width);
804 src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height);
806 sh_veu_reg_write(veu, VEU_SWR, src_stride);
807 sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16));
808 sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */
810 sh_veu_reg_write(veu, VEU_EDWR, dst_stride);
811 sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */
813 sh_veu_reg_write(veu, VEU_SWPR, 0x67);
814 sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4);
817 sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5);
818 sh_veu_reg_write(veu, VEU_MCR01, 0x0950);
819 sh_veu_reg_write(veu, VEU_MCR02, 0x0000);
821 sh_veu_reg_write(veu, VEU_MCR10, 0x397f);
822 sh_veu_reg_write(veu, VEU_MCR11, 0x0950);
823 sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd);
825 sh_veu_reg_write(veu, VEU_MCR20, 0x0000);
826 sh_veu_reg_write(veu, VEU_MCR21, 0x0950);
827 sh_veu_reg_write(veu, VEU_MCR22, 0x1023);
829 sh_veu_reg_write(veu, VEU_COFFR, 0x00800010);
833 static int sh_veu_streamon(struct file *file, void *priv,
834 enum v4l2_buf_type type)
836 struct sh_veu_file *veu_file = priv;
838 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
841 if (veu_file->cfg_needed) {
842 struct sh_veu_dev *veu = veu_file->veu_dev;
843 veu_file->cfg_needed = false;
844 sh_veu_configure(veu_file->veu_dev);
846 veu->aborting = false;
849 return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type);
852 static int sh_veu_streamoff(struct file *file, void *priv,
853 enum v4l2_buf_type type)
855 struct sh_veu_file *veu_file = priv;
857 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
860 return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type);
863 static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = {
864 .vidioc_querycap = sh_veu_querycap,
866 .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap,
867 .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap,
868 .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap,
869 .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap,
871 .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out,
872 .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out,
873 .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out,
874 .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out,
876 .vidioc_reqbufs = sh_veu_reqbufs,
877 .vidioc_querybuf = sh_veu_querybuf,
879 .vidioc_qbuf = sh_veu_qbuf,
880 .vidioc_dqbuf = sh_veu_dqbuf,
882 .vidioc_streamon = sh_veu_streamon,
883 .vidioc_streamoff = sh_veu_streamoff,
886 /* ========== Queue operations ========== */
888 static int sh_veu_queue_setup(struct vb2_queue *vq,
889 const struct v4l2_format *f,
890 unsigned int *nbuffers, unsigned int *nplanes,
891 unsigned int sizes[], void *alloc_ctxs[])
893 struct sh_veu_dev *veu = vb2_get_drv_priv(vq);
894 struct sh_veu_vfmt *vfmt;
895 unsigned int size, count = *nbuffers;
898 const struct v4l2_pix_format *pix = &f->fmt.pix;
899 const struct sh_veu_format *fmt = sh_veu_find_fmt(f);
900 struct v4l2_format ftmp = *f;
902 if (fmt->fourcc != pix->pixelformat)
904 sh_veu_try_fmt(&ftmp, fmt);
905 if (ftmp.fmt.pix.width != pix->width ||
906 ftmp.fmt.pix.height != pix->height)
908 size = pix->bytesperline ? pix->bytesperline * pix->height :
909 pix->width * pix->height * fmt->depth >> 3;
911 vfmt = sh_veu_get_vfmt(veu, vq->type);
912 size = vfmt->bytesperline * vfmt->frame.height;
916 *nbuffers = count = 2;
918 if (size * count > VIDEO_MEM_LIMIT) {
919 count = VIDEO_MEM_LIMIT / size;
925 alloc_ctxs[0] = veu->alloc_ctx;
927 dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size);
932 static int sh_veu_buf_prepare(struct vb2_buffer *vb)
934 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
935 struct sh_veu_vfmt *vfmt;
936 unsigned int sizeimage;
938 vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type);
939 sizeimage = vfmt->bytesperline * vfmt->frame.height *
940 vfmt->fmt->depth / vfmt->fmt->ydepth;
942 if (vb2_plane_size(vb, 0) < sizeimage) {
943 dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n",
944 __func__, vb2_plane_size(vb, 0), sizeimage);
948 vb2_set_plane_payload(vb, 0, sizeimage);
953 static void sh_veu_buf_queue(struct vb2_buffer *vb)
955 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
956 dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->v4l2_buf.type);
957 v4l2_m2m_buf_queue(veu->m2m_ctx, vb);
960 static void sh_veu_wait_prepare(struct vb2_queue *q)
962 sh_veu_unlock(vb2_get_drv_priv(q));
965 static void sh_veu_wait_finish(struct vb2_queue *q)
967 sh_veu_lock(vb2_get_drv_priv(q));
970 static const struct vb2_ops sh_veu_qops = {
971 .queue_setup = sh_veu_queue_setup,
972 .buf_prepare = sh_veu_buf_prepare,
973 .buf_queue = sh_veu_buf_queue,
974 .wait_prepare = sh_veu_wait_prepare,
975 .wait_finish = sh_veu_wait_finish,
978 static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
979 struct vb2_queue *dst_vq)
983 memset(src_vq, 0, sizeof(*src_vq));
984 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
985 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
986 src_vq->drv_priv = priv;
987 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
988 src_vq->ops = &sh_veu_qops;
989 src_vq->mem_ops = &vb2_dma_contig_memops;
991 ret = vb2_queue_init(src_vq);
995 memset(dst_vq, 0, sizeof(*dst_vq));
996 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
997 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
998 dst_vq->drv_priv = priv;
999 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1000 dst_vq->ops = &sh_veu_qops;
1001 dst_vq->mem_ops = &vb2_dma_contig_memops;
1003 return vb2_queue_init(dst_vq);
1006 /* ========== File operations ========== */
1008 static int sh_veu_open(struct file *file)
1010 struct sh_veu_dev *veu = video_drvdata(file);
1011 struct sh_veu_file *veu_file;
1013 veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL);
1017 veu_file->veu_dev = veu;
1018 veu_file->cfg_needed = true;
1020 file->private_data = veu_file;
1022 pm_runtime_get_sync(veu->dev);
1024 dev_dbg(veu->dev, "Created instance %p\n", veu_file);
1029 static int sh_veu_release(struct file *file)
1031 struct sh_veu_dev *veu = video_drvdata(file);
1032 struct sh_veu_file *veu_file = file->private_data;
1034 dev_dbg(veu->dev, "Releasing instance %p\n", veu_file);
1036 pm_runtime_put(veu->dev);
1038 if (veu_file == veu->capture) {
1039 veu->capture = NULL;
1040 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE));
1043 if (veu_file == veu->output) {
1045 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT));
1048 if (!veu->output && !veu->capture && veu->m2m_ctx) {
1049 v4l2_m2m_ctx_release(veu->m2m_ctx);
1050 veu->m2m_ctx = NULL;
1058 static unsigned int sh_veu_poll(struct file *file,
1059 struct poll_table_struct *wait)
1061 struct sh_veu_file *veu_file = file->private_data;
1063 return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait);
1066 static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma)
1068 struct sh_veu_file *veu_file = file->private_data;
1070 return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma);
1073 static const struct v4l2_file_operations sh_veu_fops = {
1074 .owner = THIS_MODULE,
1075 .open = sh_veu_open,
1076 .release = sh_veu_release,
1077 .poll = sh_veu_poll,
1078 .unlocked_ioctl = video_ioctl2,
1079 .mmap = sh_veu_mmap,
1082 static const struct video_device sh_veu_videodev = {
1084 .fops = &sh_veu_fops,
1085 .ioctl_ops = &sh_veu_ioctl_ops,
1087 .release = video_device_release_empty,
1088 .vfl_dir = VFL_DIR_M2M,
1091 static const struct v4l2_m2m_ops sh_veu_m2m_ops = {
1092 .device_run = sh_veu_device_run,
1093 .job_abort = sh_veu_job_abort,
1096 static irqreturn_t sh_veu_bh(int irq, void *dev_id)
1098 struct sh_veu_dev *veu = dev_id;
1100 if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) {
1101 v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx);
1104 sh_veu_device_run(veu);
1110 static irqreturn_t sh_veu_isr(int irq, void *dev_id)
1112 struct sh_veu_dev *veu = dev_id;
1113 struct vb2_buffer *dst;
1114 struct vb2_buffer *src;
1115 u32 status = sh_veu_reg_read(veu, VEU_EVTR);
1117 /* bundle read mode not used */
1121 /* disable interrupt in VEU */
1122 sh_veu_reg_write(veu, VEU_EIER, 0);
1123 /* halt operation */
1124 sh_veu_reg_write(veu, VEU_STR, 0);
1125 /* ack int, write 0 to clear bits */
1126 sh_veu_reg_write(veu, VEU_EVTR, status & ~1);
1128 /* conversion completed */
1129 dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx);
1130 src = v4l2_m2m_src_buf_remove(veu->m2m_ctx);
1134 spin_lock(&veu->lock);
1135 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
1136 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
1137 spin_unlock(&veu->lock);
1142 return IRQ_WAKE_THREAD;
1147 static int sh_veu_probe(struct platform_device *pdev)
1149 struct sh_veu_dev *veu;
1150 struct resource *reg_res;
1151 struct video_device *vdev;
1154 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1155 irq = platform_get_irq(pdev, 0);
1157 if (!reg_res || irq <= 0) {
1158 dev_err(&pdev->dev, "Insufficient VEU platform information.\n");
1162 veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL);
1166 veu->is_2h = resource_size(reg_res) == 0x22c;
1168 veu->base = devm_ioremap_resource(&pdev->dev, reg_res);
1169 if (IS_ERR(veu->base))
1170 return PTR_ERR(veu->base);
1172 ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh,
1177 ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev);
1179 dev_err(&pdev->dev, "Error registering v4l2 device\n");
1185 veu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1186 if (IS_ERR(veu->alloc_ctx)) {
1187 ret = PTR_ERR(veu->alloc_ctx);
1191 *vdev = sh_veu_videodev;
1192 spin_lock_init(&veu->lock);
1193 mutex_init(&veu->fop_lock);
1194 vdev->lock = &veu->fop_lock;
1196 video_set_drvdata(vdev, veu);
1198 veu->dev = &pdev->dev;
1199 veu->vfmt_out = DEFAULT_OUT_VFMT;
1200 veu->vfmt_in = DEFAULT_IN_VFMT;
1202 veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops);
1203 if (IS_ERR(veu->m2m_dev)) {
1204 ret = PTR_ERR(veu->m2m_dev);
1205 v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret);
1209 pm_runtime_enable(&pdev->dev);
1210 pm_runtime_resume(&pdev->dev);
1212 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1213 pm_runtime_suspend(&pdev->dev);
1220 pm_runtime_disable(&pdev->dev);
1221 v4l2_m2m_release(veu->m2m_dev);
1223 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1225 v4l2_device_unregister(&veu->v4l2_dev);
1229 static int sh_veu_remove(struct platform_device *pdev)
1231 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1232 struct sh_veu_dev *veu = container_of(v4l2_dev,
1233 struct sh_veu_dev, v4l2_dev);
1235 video_unregister_device(&veu->vdev);
1236 pm_runtime_disable(&pdev->dev);
1237 v4l2_m2m_release(veu->m2m_dev);
1238 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1239 v4l2_device_unregister(&veu->v4l2_dev);
1244 static struct platform_driver __refdata sh_veu_pdrv = {
1245 .remove = sh_veu_remove,
1248 .owner = THIS_MODULE,
1252 module_platform_driver_probe(sh_veu_pdrv, sh_veu_probe);
1254 MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver");
1255 MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>");
1256 MODULE_LICENSE("GPL v2");