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
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/interrupt.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/slab.h>
21 #include <linux/types.h>
22 #include <linux/videodev2.h>
24 #include <media/v4l2-dev.h>
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-ioctl.h>
27 #include <media/v4l2-mem2mem.h>
28 #include <media/videobuf2-dma-contig.h>
30 #define VEU_STR 0x00 /* start register */
31 #define VEU_SWR 0x10 /* src: line length */
32 #define VEU_SSR 0x14 /* src: image size */
33 #define VEU_SAYR 0x18 /* src: y/rgb plane address */
34 #define VEU_SACR 0x1c /* src: c plane address */
35 #define VEU_BSSR 0x20 /* bundle mode register */
36 #define VEU_EDWR 0x30 /* dst: line length */
37 #define VEU_DAYR 0x34 /* dst: y/rgb plane address */
38 #define VEU_DACR 0x38 /* dst: c plane address */
39 #define VEU_TRCR 0x50 /* transform control */
40 #define VEU_RFCR 0x54 /* resize scale */
41 #define VEU_RFSR 0x58 /* resize clip */
42 #define VEU_ENHR 0x5c /* enhance */
43 #define VEU_FMCR 0x70 /* filter mode */
44 #define VEU_VTCR 0x74 /* lowpass vertical */
45 #define VEU_HTCR 0x78 /* lowpass horizontal */
46 #define VEU_APCR 0x80 /* color match */
47 #define VEU_ECCR 0x84 /* color replace */
48 #define VEU_AFXR 0x90 /* fixed mode */
49 #define VEU_SWPR 0x94 /* swap */
50 #define VEU_EIER 0xa0 /* interrupt mask */
51 #define VEU_EVTR 0xa4 /* interrupt event */
52 #define VEU_STAR 0xb0 /* status */
53 #define VEU_BSRR 0xb4 /* reset */
55 #define VEU_MCR00 0x200 /* color conversion matrix coefficient 00 */
56 #define VEU_MCR01 0x204 /* color conversion matrix coefficient 01 */
57 #define VEU_MCR02 0x208 /* color conversion matrix coefficient 02 */
58 #define VEU_MCR10 0x20c /* color conversion matrix coefficient 10 */
59 #define VEU_MCR11 0x210 /* color conversion matrix coefficient 11 */
60 #define VEU_MCR12 0x214 /* color conversion matrix coefficient 12 */
61 #define VEU_MCR20 0x218 /* color conversion matrix coefficient 20 */
62 #define VEU_MCR21 0x21c /* color conversion matrix coefficient 21 */
63 #define VEU_MCR22 0x220 /* color conversion matrix coefficient 22 */
64 #define VEU_COFFR 0x224 /* color conversion offset */
65 #define VEU_CBR 0x228 /* color conversion clip */
68 * 4092x4092 max size is the normal case. In some cases it can be reduced to
69 * 2048x2048, in other cases it can be 4092x8188 or even 8188x8188.
77 /* 3 buffers of 2048 x 1536 - 3 megapixels @ 16bpp */
78 #define VIDEO_MEM_LIMIT ALIGN(2048 * 1536 * 2 * 3, 1024 * 1024)
80 #define MEM2MEM_DEF_TRANSLEN 1
85 struct sh_veu_dev *veu_dev;
89 struct sh_veu_format {
96 /* video data format */
98 /* Replace with v4l2_rect */
99 struct v4l2_rect frame;
100 unsigned int bytesperline;
101 unsigned int offset_y;
102 unsigned int offset_c;
103 const struct sh_veu_format *fmt;
107 struct v4l2_device v4l2_dev;
108 struct video_device vdev;
109 struct v4l2_m2m_dev *m2m_dev;
111 struct v4l2_m2m_ctx *m2m_ctx;
112 struct sh_veu_vfmt vfmt_out;
113 struct sh_veu_vfmt vfmt_in;
114 /* Only single user per direction so far */
115 struct sh_veu_file *capture;
116 struct sh_veu_file *output;
117 struct mutex fop_lock;
119 struct vb2_alloc_ctx *alloc_ctx;
122 unsigned int xaction;
126 enum sh_veu_fmt_idx {
137 #define VGA_WIDTH 640
138 #define VGA_HEIGHT 480
140 #define DEFAULT_IN_WIDTH VGA_WIDTH
141 #define DEFAULT_IN_HEIGHT VGA_HEIGHT
142 #define DEFAULT_IN_FMTIDX SH_VEU_FMT_NV12
143 #define DEFAULT_OUT_WIDTH VGA_WIDTH
144 #define DEFAULT_OUT_HEIGHT VGA_HEIGHT
145 #define DEFAULT_OUT_FMTIDX SH_VEU_FMT_RGB565
148 * Alignment: Y-plane should be 4-byte aligned for NV12 and NV16, and 8-byte
151 static const struct sh_veu_format sh_veu_fmt[] = {
152 [SH_VEU_FMT_NV12] = { .ydepth = 8, .depth = 12, .name = "NV12", .fourcc = V4L2_PIX_FMT_NV12 },
153 [SH_VEU_FMT_NV16] = { .ydepth = 8, .depth = 16, .name = "NV16", .fourcc = V4L2_PIX_FMT_NV16 },
154 [SH_VEU_FMT_NV24] = { .ydepth = 8, .depth = 24, .name = "NV24", .fourcc = V4L2_PIX_FMT_NV24 },
155 [SH_VEU_FMT_RGB332] = { .ydepth = 8, .depth = 8, .name = "RGB332", .fourcc = V4L2_PIX_FMT_RGB332 },
156 [SH_VEU_FMT_RGB444] = { .ydepth = 16, .depth = 16, .name = "RGB444", .fourcc = V4L2_PIX_FMT_RGB444 },
157 [SH_VEU_FMT_RGB565] = { .ydepth = 16, .depth = 16, .name = "RGB565", .fourcc = V4L2_PIX_FMT_RGB565 },
158 [SH_VEU_FMT_RGB666] = { .ydepth = 32, .depth = 32, .name = "BGR666", .fourcc = V4L2_PIX_FMT_BGR666 },
159 [SH_VEU_FMT_RGB24] = { .ydepth = 24, .depth = 24, .name = "RGB24", .fourcc = V4L2_PIX_FMT_RGB24 },
162 #define DEFAULT_IN_VFMT (struct sh_veu_vfmt){ \
164 .width = VGA_WIDTH, \
165 .height = VGA_HEIGHT, \
167 .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_IN_FMTIDX].ydepth) >> 3, \
168 .fmt = &sh_veu_fmt[DEFAULT_IN_FMTIDX], \
171 #define DEFAULT_OUT_VFMT (struct sh_veu_vfmt){ \
173 .width = VGA_WIDTH, \
174 .height = VGA_HEIGHT, \
176 .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_OUT_FMTIDX].ydepth) >> 3, \
177 .fmt = &sh_veu_fmt[DEFAULT_OUT_FMTIDX], \
181 * TODO: add support for further output formats:
191 static const int sh_veu_fmt_out[] = {
196 * TODO: add support for further input formats:
203 static const int sh_veu_fmt_in[] = {
207 static enum v4l2_colorspace sh_veu_4cc2cspace(u32 fourcc)
212 case V4L2_PIX_FMT_NV12:
213 case V4L2_PIX_FMT_NV16:
214 case V4L2_PIX_FMT_NV24:
215 return V4L2_COLORSPACE_JPEG;
216 case V4L2_PIX_FMT_RGB332:
217 case V4L2_PIX_FMT_RGB444:
218 case V4L2_PIX_FMT_RGB565:
219 case V4L2_PIX_FMT_BGR666:
220 case V4L2_PIX_FMT_RGB24:
221 return V4L2_COLORSPACE_SRGB;
225 static u32 sh_veu_reg_read(struct sh_veu_dev *veu, unsigned int reg)
227 return ioread32(veu->base + reg);
230 static void sh_veu_reg_write(struct sh_veu_dev *veu, unsigned int reg,
233 iowrite32(value, veu->base + reg);
236 /* ========== mem2mem callbacks ========== */
238 static void sh_veu_job_abort(void *priv)
240 struct sh_veu_dev *veu = priv;
242 /* Will cancel the transaction in the next interrupt handler */
243 veu->aborting = true;
246 static void sh_veu_lock(void *priv)
248 struct sh_veu_dev *veu = priv;
250 mutex_lock(&veu->fop_lock);
253 static void sh_veu_unlock(void *priv)
255 struct sh_veu_dev *veu = priv;
257 mutex_unlock(&veu->fop_lock);
260 static void sh_veu_process(struct sh_veu_dev *veu,
261 struct vb2_buffer *src_buf,
262 struct vb2_buffer *dst_buf)
264 dma_addr_t addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
266 sh_veu_reg_write(veu, VEU_DAYR, addr + veu->vfmt_out.offset_y);
267 sh_veu_reg_write(veu, VEU_DACR, veu->vfmt_out.offset_c ?
268 addr + veu->vfmt_out.offset_c : 0);
269 dev_dbg(veu->dev, "%s(): dst base %lx, y: %x, c: %x\n", __func__,
271 veu->vfmt_out.offset_y, veu->vfmt_out.offset_c);
273 addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
274 sh_veu_reg_write(veu, VEU_SAYR, addr + veu->vfmt_in.offset_y);
275 sh_veu_reg_write(veu, VEU_SACR, veu->vfmt_in.offset_c ?
276 addr + veu->vfmt_in.offset_c : 0);
277 dev_dbg(veu->dev, "%s(): src base %lx, y: %x, c: %x\n", __func__,
279 veu->vfmt_in.offset_y, veu->vfmt_in.offset_c);
281 sh_veu_reg_write(veu, VEU_STR, 1);
283 sh_veu_reg_write(veu, VEU_EIER, 1); /* enable interrupt in VEU */
287 * sh_veu_device_run() - prepares and starts the device
289 * This will be called by the framework when it decides to schedule a particular
292 static void sh_veu_device_run(void *priv)
294 struct sh_veu_dev *veu = priv;
295 struct vb2_buffer *src_buf, *dst_buf;
297 src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx);
298 dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx);
300 if (src_buf && dst_buf)
301 sh_veu_process(veu, src_buf, dst_buf);
304 /* ========== video ioctls ========== */
306 static bool sh_veu_is_streamer(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
307 enum v4l2_buf_type type)
309 return (type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
310 veu_file == veu->capture) ||
311 (type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
312 veu_file == veu->output);
315 static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
316 struct vb2_queue *dst_vq);
319 * It is not unusual to have video nodes open()ed multiple times. While some
320 * V4L2 operations are non-intrusive, like querying formats and various
321 * parameters, others, like setting formats, starting and stopping streaming,
322 * queuing and dequeuing buffers, directly affect hardware configuration and /
323 * or execution. This function verifies availability of the requested interface
324 * and, if available, reserves it for the requesting user.
326 static int sh_veu_stream_init(struct sh_veu_dev *veu, struct sh_veu_file *veu_file,
327 enum v4l2_buf_type type)
329 struct sh_veu_file **stream;
332 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
333 stream = &veu->capture;
335 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
336 stream = &veu->output;
342 if (*stream == veu_file)
353 static int sh_veu_context_init(struct sh_veu_dev *veu)
358 veu->m2m_ctx = v4l2_m2m_ctx_init(veu->m2m_dev, veu,
361 if (IS_ERR(veu->m2m_ctx))
362 return PTR_ERR(veu->m2m_ctx);
367 static int sh_veu_querycap(struct file *file, void *priv,
368 struct v4l2_capability *cap)
370 strlcpy(cap->driver, "sh-veu", sizeof(cap->driver));
371 strlcpy(cap->card, "sh-mobile VEU", sizeof(cap->card));
372 strlcpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info));
373 cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
374 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
379 static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num)
381 if (f->index >= fmt_num)
384 strlcpy(f->description, sh_veu_fmt[fmt[f->index]].name, sizeof(f->description));
385 f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc;
389 static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv,
390 struct v4l2_fmtdesc *f)
392 return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out));
395 static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv,
396 struct v4l2_fmtdesc *f)
398 return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in));
401 static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu,
402 enum v4l2_buf_type type)
405 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
406 return &veu->vfmt_out;
407 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
408 return &veu->vfmt_in;
414 static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
416 struct v4l2_pix_format *pix = &f->fmt.pix;
417 struct sh_veu_dev *veu = veu_file->veu_dev;
418 struct sh_veu_vfmt *vfmt;
420 vfmt = sh_veu_get_vfmt(veu, f->type);
422 pix->width = vfmt->frame.width;
423 pix->height = vfmt->frame.height;
424 pix->field = V4L2_FIELD_NONE;
425 pix->pixelformat = vfmt->fmt->fourcc;
426 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
427 pix->bytesperline = vfmt->bytesperline;
428 pix->sizeimage = vfmt->bytesperline * pix->height *
429 vfmt->fmt->depth / vfmt->fmt->ydepth;
431 dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__,
432 f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat);
437 static int sh_veu_g_fmt_vid_out(struct file *file, void *priv,
438 struct v4l2_format *f)
440 return sh_veu_g_fmt(priv, f);
443 static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv,
444 struct v4l2_format *f)
446 return sh_veu_g_fmt(priv, f);
449 static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt)
451 struct v4l2_pix_format *pix = &f->fmt.pix;
452 unsigned int y_bytes_used;
455 * V4L2 specification suggests, that the driver should correct the
456 * format struct if any of the dimensions is unsupported
458 switch (pix->field) {
461 pix->field = V4L2_FIELD_NONE;
462 /* fall through: continue handling V4L2_FIELD_NONE */
463 case V4L2_FIELD_NONE:
467 v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W,
468 &pix->height, MIN_H, MAX_H, 0, 0);
470 y_bytes_used = (pix->width * fmt->ydepth) >> 3;
472 if (pix->bytesperline < y_bytes_used)
473 pix->bytesperline = y_bytes_used;
474 pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth;
476 pix->pixelformat = fmt->fourcc;
477 pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat);
480 pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage);
485 static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f)
490 pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field);
493 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
494 fmt = sh_veu_fmt_out;
495 n = ARRAY_SIZE(sh_veu_fmt_out);
496 dflt = DEFAULT_OUT_FMTIDX;
498 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
501 n = ARRAY_SIZE(sh_veu_fmt_in);
502 dflt = DEFAULT_IN_FMTIDX;
506 for (i = 0; i < n; i++)
507 if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat)
508 return &sh_veu_fmt[fmt[i]];
510 return &sh_veu_fmt[dflt];
513 static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv,
514 struct v4l2_format *f)
516 const struct sh_veu_format *fmt;
518 fmt = sh_veu_find_fmt(f);
520 /* wrong buffer type */
523 return sh_veu_try_fmt(f, fmt);
526 static int sh_veu_try_fmt_vid_out(struct file *file, void *priv,
527 struct v4l2_format *f)
529 const struct sh_veu_format *fmt;
531 fmt = sh_veu_find_fmt(f);
533 /* wrong buffer type */
536 return sh_veu_try_fmt(f, fmt);
539 static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt)
541 /* dst_left and dst_top validity will be verified in CROP / COMPOSE */
542 unsigned int left = vfmt->frame.left & ~0x03;
543 unsigned int top = vfmt->frame.top;
544 dma_addr_t offset = ((left * veu->vfmt_out.fmt->depth) >> 3) +
545 top * veu->vfmt_out.bytesperline;
548 vfmt->offset_y = offset;
550 switch (vfmt->fmt->fourcc) {
551 case V4L2_PIX_FMT_NV12:
552 case V4L2_PIX_FMT_NV16:
553 case V4L2_PIX_FMT_NV24:
554 y_line = ALIGN(vfmt->frame.width, 16);
555 vfmt->offset_c = offset + y_line * vfmt->frame.height;
557 case V4L2_PIX_FMT_RGB332:
558 case V4L2_PIX_FMT_RGB444:
559 case V4L2_PIX_FMT_RGB565:
560 case V4L2_PIX_FMT_BGR666:
561 case V4L2_PIX_FMT_RGB24:
569 static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f)
571 struct v4l2_pix_format *pix = &f->fmt.pix;
572 struct sh_veu_dev *veu = veu_file->veu_dev;
573 struct sh_veu_vfmt *vfmt;
574 struct vb2_queue *vq;
575 int ret = sh_veu_context_init(veu);
579 vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type);
583 if (vb2_is_busy(vq)) {
584 v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__);
588 vfmt = sh_veu_get_vfmt(veu, f->type);
589 /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */
591 vfmt->fmt = sh_veu_find_fmt(f);
592 /* vfmt->fmt != NULL following the same argument as above */
593 vfmt->frame.width = pix->width;
594 vfmt->frame.height = pix->height;
595 vfmt->bytesperline = pix->bytesperline;
597 sh_veu_colour_offset(veu, vfmt);
600 * We could also verify and require configuration only if any parameters
601 * actually have changed, but it is unlikely, that the user requests the
602 * same configuration several times without closing the device.
604 veu_file->cfg_needed = true;
607 "Setting format for type %d, wxh: %dx%d, fmt: %x\n",
608 f->type, pix->width, pix->height, vfmt->fmt->fourcc);
613 static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv,
614 struct v4l2_format *f)
616 int ret = sh_veu_try_fmt_vid_cap(file, priv, f);
620 return sh_veu_s_fmt(priv, f);
623 static int sh_veu_s_fmt_vid_out(struct file *file, void *priv,
624 struct v4l2_format *f)
626 int ret = sh_veu_try_fmt_vid_out(file, priv, f);
630 return sh_veu_s_fmt(priv, f);
633 static int sh_veu_reqbufs(struct file *file, void *priv,
634 struct v4l2_requestbuffers *reqbufs)
636 struct sh_veu_file *veu_file = priv;
637 struct sh_veu_dev *veu = veu_file->veu_dev;
638 int ret = sh_veu_context_init(veu);
642 ret = sh_veu_stream_init(veu, veu_file, reqbufs->type);
646 return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs);
649 static int sh_veu_querybuf(struct file *file, void *priv,
650 struct v4l2_buffer *buf)
652 struct sh_veu_file *veu_file = priv;
654 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
657 return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf);
660 static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
662 struct sh_veu_file *veu_file = priv;
664 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
665 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
668 return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf);
671 static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
673 struct sh_veu_file *veu_file = priv;
675 dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type);
676 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type))
679 return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf);
682 static void sh_veu_calc_scale(struct sh_veu_dev *veu,
683 int size_in, int size_out, int crop_out,
684 u32 *mant, u32 *frac, u32 *rep)
688 /* calculate FRAC and MANT */
689 *rep = *mant = *frac = 0;
691 if (size_in == size_out) {
692 if (crop_out != size_out)
693 *mant = 1; /* needed for cropping */
697 /* VEU2H special upscale */
698 if (veu->is_2h && size_out > size_in) {
699 u32 fixpoint = (4096 * size_in) / size_out;
700 *mant = fixpoint / 4096;
701 *frac = (fixpoint - (*mant * 4096)) & ~0x07;
718 fixpoint = (4096 * (size_in - 1)) / (size_out + 1);
719 *mant = fixpoint / 4096;
720 *frac = fixpoint - (*mant * 4096);
724 * FIXME: do we really have to round down twice in the
728 if (size_out > size_in)
729 *frac -= 8; /* round down if scaling up */
731 *frac += 8; /* round up if scaling down */
735 static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu,
736 int size_in, int size_out, int crop_out)
738 u32 mant, frac, value, rep;
740 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
743 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) |
744 (((mant << 12) | frac) << 16);
746 sh_veu_reg_write(veu, VEU_RFCR, value);
749 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) |
750 (((rep << 12) | crop_out) << 16);
752 sh_veu_reg_write(veu, VEU_RFSR, value);
754 return ALIGN((size_in * crop_out) / size_out, 4);
757 static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu,
758 int size_in, int size_out, int crop_out)
760 u32 mant, frac, value, rep;
762 sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep);
765 value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) |
768 sh_veu_reg_write(veu, VEU_RFCR, value);
771 value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) |
772 (rep << 12) | crop_out;
774 sh_veu_reg_write(veu, VEU_RFSR, value);
776 return ALIGN((size_in * crop_out) / size_out, 4);
779 static void sh_veu_configure(struct sh_veu_dev *veu)
781 u32 src_width, src_stride, src_height;
782 u32 dst_width, dst_stride, dst_height;
786 sh_veu_reg_write(veu, VEU_BSRR, 0x100);
788 src_width = veu->vfmt_in.frame.width;
789 src_height = veu->vfmt_in.frame.height;
790 src_stride = ALIGN(veu->vfmt_in.frame.width, 16);
792 dst_width = real_w = veu->vfmt_out.frame.width;
793 dst_height = real_h = veu->vfmt_out.frame.height;
794 /* Datasheet is unclear - whether it's always number of bytes or not */
795 dst_stride = veu->vfmt_out.bytesperline;
798 * So far real_w == dst_width && real_h == dst_height, but it wasn't
799 * necessarily the case in the original vidix driver, so, it may change
800 * here in the future too.
802 src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width);
803 src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height);
805 sh_veu_reg_write(veu, VEU_SWR, src_stride);
806 sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16));
807 sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */
809 sh_veu_reg_write(veu, VEU_EDWR, dst_stride);
810 sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */
812 sh_veu_reg_write(veu, VEU_SWPR, 0x67);
813 sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4);
816 sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5);
817 sh_veu_reg_write(veu, VEU_MCR01, 0x0950);
818 sh_veu_reg_write(veu, VEU_MCR02, 0x0000);
820 sh_veu_reg_write(veu, VEU_MCR10, 0x397f);
821 sh_veu_reg_write(veu, VEU_MCR11, 0x0950);
822 sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd);
824 sh_veu_reg_write(veu, VEU_MCR20, 0x0000);
825 sh_veu_reg_write(veu, VEU_MCR21, 0x0950);
826 sh_veu_reg_write(veu, VEU_MCR22, 0x1023);
828 sh_veu_reg_write(veu, VEU_COFFR, 0x00800010);
832 static int sh_veu_streamon(struct file *file, void *priv,
833 enum v4l2_buf_type type)
835 struct sh_veu_file *veu_file = priv;
837 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
840 if (veu_file->cfg_needed) {
841 struct sh_veu_dev *veu = veu_file->veu_dev;
842 veu_file->cfg_needed = false;
843 sh_veu_configure(veu_file->veu_dev);
845 veu->aborting = false;
848 return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type);
851 static int sh_veu_streamoff(struct file *file, void *priv,
852 enum v4l2_buf_type type)
854 struct sh_veu_file *veu_file = priv;
856 if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type))
859 return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type);
862 static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = {
863 .vidioc_querycap = sh_veu_querycap,
865 .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap,
866 .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap,
867 .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap,
868 .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap,
870 .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out,
871 .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out,
872 .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out,
873 .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out,
875 .vidioc_reqbufs = sh_veu_reqbufs,
876 .vidioc_querybuf = sh_veu_querybuf,
878 .vidioc_qbuf = sh_veu_qbuf,
879 .vidioc_dqbuf = sh_veu_dqbuf,
881 .vidioc_streamon = sh_veu_streamon,
882 .vidioc_streamoff = sh_veu_streamoff,
885 /* ========== Queue operations ========== */
887 static int sh_veu_queue_setup(struct vb2_queue *vq,
888 const struct v4l2_format *f,
889 unsigned int *nbuffers, unsigned int *nplanes,
890 unsigned int sizes[], void *alloc_ctxs[])
892 struct sh_veu_dev *veu = vb2_get_drv_priv(vq);
893 struct sh_veu_vfmt *vfmt;
894 unsigned int size, count = *nbuffers;
897 const struct v4l2_pix_format *pix = &f->fmt.pix;
898 const struct sh_veu_format *fmt = sh_veu_find_fmt(f);
899 struct v4l2_format ftmp = *f;
901 if (fmt->fourcc != pix->pixelformat)
903 sh_veu_try_fmt(&ftmp, fmt);
904 if (ftmp.fmt.pix.width != pix->width ||
905 ftmp.fmt.pix.height != pix->height)
907 size = pix->bytesperline ? pix->bytesperline * pix->height :
908 pix->width * pix->height * fmt->depth >> 3;
910 vfmt = sh_veu_get_vfmt(veu, vq->type);
911 size = vfmt->bytesperline * vfmt->frame.height;
915 *nbuffers = count = 2;
917 if (size * count > VIDEO_MEM_LIMIT) {
918 count = VIDEO_MEM_LIMIT / size;
924 alloc_ctxs[0] = veu->alloc_ctx;
926 dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size);
931 static int sh_veu_buf_prepare(struct vb2_buffer *vb)
933 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
934 struct sh_veu_vfmt *vfmt;
935 unsigned int sizeimage;
937 vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type);
938 sizeimage = vfmt->bytesperline * vfmt->frame.height *
939 vfmt->fmt->depth / vfmt->fmt->ydepth;
941 if (vb2_plane_size(vb, 0) < sizeimage) {
942 dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n",
943 __func__, vb2_plane_size(vb, 0), sizeimage);
947 vb2_set_plane_payload(vb, 0, sizeimage);
952 static void sh_veu_buf_queue(struct vb2_buffer *vb)
954 struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue);
955 dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->v4l2_buf.type);
956 v4l2_m2m_buf_queue(veu->m2m_ctx, vb);
959 static void sh_veu_wait_prepare(struct vb2_queue *q)
961 sh_veu_unlock(vb2_get_drv_priv(q));
964 static void sh_veu_wait_finish(struct vb2_queue *q)
966 sh_veu_lock(vb2_get_drv_priv(q));
969 static const struct vb2_ops sh_veu_qops = {
970 .queue_setup = sh_veu_queue_setup,
971 .buf_prepare = sh_veu_buf_prepare,
972 .buf_queue = sh_veu_buf_queue,
973 .wait_prepare = sh_veu_wait_prepare,
974 .wait_finish = sh_veu_wait_finish,
977 static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq,
978 struct vb2_queue *dst_vq)
982 memset(src_vq, 0, sizeof(*src_vq));
983 src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
984 src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
985 src_vq->drv_priv = priv;
986 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
987 src_vq->ops = &sh_veu_qops;
988 src_vq->mem_ops = &vb2_dma_contig_memops;
990 ret = vb2_queue_init(src_vq);
994 memset(dst_vq, 0, sizeof(*dst_vq));
995 dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
996 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
997 dst_vq->drv_priv = priv;
998 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
999 dst_vq->ops = &sh_veu_qops;
1000 dst_vq->mem_ops = &vb2_dma_contig_memops;
1002 return vb2_queue_init(dst_vq);
1005 /* ========== File operations ========== */
1007 static int sh_veu_open(struct file *file)
1009 struct sh_veu_dev *veu = video_drvdata(file);
1010 struct sh_veu_file *veu_file;
1012 veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL);
1016 veu_file->veu_dev = veu;
1017 veu_file->cfg_needed = true;
1019 file->private_data = veu_file;
1021 pm_runtime_get_sync(veu->dev);
1023 dev_dbg(veu->dev, "Created instance %p\n", veu_file);
1028 static int sh_veu_release(struct file *file)
1030 struct sh_veu_dev *veu = video_drvdata(file);
1031 struct sh_veu_file *veu_file = file->private_data;
1033 dev_dbg(veu->dev, "Releasing instance %p\n", veu_file);
1035 pm_runtime_put(veu->dev);
1037 if (veu_file == veu->capture) {
1038 veu->capture = NULL;
1039 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE));
1042 if (veu_file == veu->output) {
1044 vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT));
1047 if (!veu->output && !veu->capture && veu->m2m_ctx) {
1048 v4l2_m2m_ctx_release(veu->m2m_ctx);
1049 veu->m2m_ctx = NULL;
1057 static unsigned int sh_veu_poll(struct file *file,
1058 struct poll_table_struct *wait)
1060 struct sh_veu_file *veu_file = file->private_data;
1062 return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait);
1065 static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma)
1067 struct sh_veu_file *veu_file = file->private_data;
1069 return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma);
1072 static const struct v4l2_file_operations sh_veu_fops = {
1073 .owner = THIS_MODULE,
1074 .open = sh_veu_open,
1075 .release = sh_veu_release,
1076 .poll = sh_veu_poll,
1077 .unlocked_ioctl = video_ioctl2,
1078 .mmap = sh_veu_mmap,
1081 static const struct video_device sh_veu_videodev = {
1083 .fops = &sh_veu_fops,
1084 .ioctl_ops = &sh_veu_ioctl_ops,
1086 .release = video_device_release_empty,
1087 .vfl_dir = VFL_DIR_M2M,
1090 static const struct v4l2_m2m_ops sh_veu_m2m_ops = {
1091 .device_run = sh_veu_device_run,
1092 .job_abort = sh_veu_job_abort,
1095 static irqreturn_t sh_veu_bh(int irq, void *dev_id)
1097 struct sh_veu_dev *veu = dev_id;
1099 if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) {
1100 v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx);
1103 sh_veu_device_run(veu);
1109 static irqreturn_t sh_veu_isr(int irq, void *dev_id)
1111 struct sh_veu_dev *veu = dev_id;
1112 struct vb2_buffer *dst;
1113 struct vb2_buffer *src;
1114 u32 status = sh_veu_reg_read(veu, VEU_EVTR);
1116 /* bundle read mode not used */
1120 /* disable interrupt in VEU */
1121 sh_veu_reg_write(veu, VEU_EIER, 0);
1122 /* halt operation */
1123 sh_veu_reg_write(veu, VEU_STR, 0);
1124 /* ack int, write 0 to clear bits */
1125 sh_veu_reg_write(veu, VEU_EVTR, status & ~1);
1127 /* conversion completed */
1128 dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx);
1129 src = v4l2_m2m_src_buf_remove(veu->m2m_ctx);
1133 spin_lock(&veu->lock);
1134 v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE);
1135 v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE);
1136 spin_unlock(&veu->lock);
1141 return IRQ_WAKE_THREAD;
1146 static int sh_veu_probe(struct platform_device *pdev)
1148 struct sh_veu_dev *veu;
1149 struct resource *reg_res;
1150 struct video_device *vdev;
1153 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1154 irq = platform_get_irq(pdev, 0);
1156 if (!reg_res || irq <= 0) {
1157 dev_err(&pdev->dev, "Insufficient VEU platform information.\n");
1161 veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL);
1165 veu->is_2h = resource_size(reg_res) == 0x22c;
1167 veu->base = devm_request_and_ioremap(&pdev->dev, reg_res);
1171 ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh,
1176 ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev);
1178 dev_err(&pdev->dev, "Error registering v4l2 device\n");
1184 veu->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
1185 if (IS_ERR(veu->alloc_ctx)) {
1186 ret = PTR_ERR(veu->alloc_ctx);
1190 *vdev = sh_veu_videodev;
1191 spin_lock_init(&veu->lock);
1192 mutex_init(&veu->fop_lock);
1193 vdev->lock = &veu->fop_lock;
1195 video_set_drvdata(vdev, veu);
1197 veu->dev = &pdev->dev;
1198 veu->vfmt_out = DEFAULT_OUT_VFMT;
1199 veu->vfmt_in = DEFAULT_IN_VFMT;
1201 veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops);
1202 if (IS_ERR(veu->m2m_dev)) {
1203 ret = PTR_ERR(veu->m2m_dev);
1204 v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret);
1208 pm_runtime_enable(&pdev->dev);
1209 pm_runtime_resume(&pdev->dev);
1211 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1212 pm_runtime_suspend(&pdev->dev);
1219 pm_runtime_disable(&pdev->dev);
1220 v4l2_m2m_release(veu->m2m_dev);
1222 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1224 v4l2_device_unregister(&veu->v4l2_dev);
1228 static int sh_veu_remove(struct platform_device *pdev)
1230 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1231 struct sh_veu_dev *veu = container_of(v4l2_dev,
1232 struct sh_veu_dev, v4l2_dev);
1234 video_unregister_device(&veu->vdev);
1235 pm_runtime_disable(&pdev->dev);
1236 v4l2_m2m_release(veu->m2m_dev);
1237 vb2_dma_contig_cleanup_ctx(veu->alloc_ctx);
1238 v4l2_device_unregister(&veu->v4l2_dev);
1243 static struct platform_driver __refdata sh_veu_pdrv = {
1244 .remove = sh_veu_remove,
1247 .owner = THIS_MODULE,
1251 static int __init sh_veu_init(void)
1253 return platform_driver_probe(&sh_veu_pdrv, sh_veu_probe);
1256 static void __exit sh_veu_exit(void)
1258 platform_driver_unregister(&sh_veu_pdrv);
1261 module_init(sh_veu_init);
1262 module_exit(sh_veu_exit);
1264 MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver");
1265 MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>");
1266 MODULE_LICENSE("GPL v2");