2 * SuperH Video Output Unit (VOU) driver
4 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/dma-mapping.h>
12 #include <linux/delay.h>
13 #include <linux/errno.h>
15 #include <linux/i2c.h>
16 #include <linux/init.h>
17 #include <linux/interrupt.h>
18 #include <linux/kernel.h>
19 #include <linux/platform_device.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/slab.h>
22 #include <linux/videodev2.h>
23 #include <linux/module.h>
25 #include <media/sh_vou.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-device.h>
28 #include <media/v4l2-ioctl.h>
29 #include <media/v4l2-mediabus.h>
30 #include <media/videobuf-dma-contig.h>
32 /* Mirror addresses are not available for all registers */
60 #define VOU_MAX_IMAGE_WIDTH 720
61 #define VOU_MAX_IMAGE_HEIGHT 576
63 struct sh_vou_device {
64 struct v4l2_device v4l2_dev;
65 struct video_device *vdev;
67 struct sh_vou_pdata *pdata;
70 /* State information */
71 struct v4l2_pix_format pix;
72 struct v4l2_rect rect;
73 struct list_head queue;
76 struct videobuf_buffer *active;
77 enum sh_vou_status status;
78 struct mutex fop_lock;
82 struct videobuf_queue vbq;
85 /* Register access routines for sides A, B and mirror addresses */
86 static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg,
89 __raw_writel(value, vou_dev->base + reg);
92 static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg,
95 __raw_writel(value, vou_dev->base + reg);
96 __raw_writel(value, vou_dev->base + reg + 0x1000);
99 static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg,
102 __raw_writel(value, vou_dev->base + reg + 0x2000);
105 static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg)
107 return __raw_readl(vou_dev->base + reg);
110 static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg,
113 u32 old = __raw_readl(vou_dev->base + reg);
115 value = (value & mask) | (old & ~mask);
116 __raw_writel(value, vou_dev->base + reg);
119 static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg,
122 sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask);
125 static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg,
128 sh_vou_reg_a_set(vou_dev, reg, value, mask);
129 sh_vou_reg_b_set(vou_dev, reg, value, mask);
141 /* Further pixel formats can be added */
142 static struct sh_vou_fmt vou_fmt[] = {
144 .pfmt = V4L2_PIX_FMT_NV12,
146 .desc = "YVU420 planar",
151 .pfmt = V4L2_PIX_FMT_NV16,
153 .desc = "YVYU planar",
158 .pfmt = V4L2_PIX_FMT_RGB24,
165 .pfmt = V4L2_PIX_FMT_RGB565,
172 .pfmt = V4L2_PIX_FMT_RGB565X,
174 .desc = "RGB565 byteswapped",
180 static void sh_vou_schedule_next(struct sh_vou_device *vou_dev,
181 struct videobuf_buffer *vb)
183 dma_addr_t addr1, addr2;
185 addr1 = videobuf_to_dma_contig(vb);
186 switch (vou_dev->pix.pixelformat) {
187 case V4L2_PIX_FMT_NV12:
188 case V4L2_PIX_FMT_NV16:
189 addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height;
195 sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1);
196 sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2);
199 static void sh_vou_stream_start(struct sh_vou_device *vou_dev,
200 struct videobuf_buffer *vb)
202 unsigned int row_coeff;
203 #ifdef __LITTLE_ENDIAN
209 switch (vou_dev->pix.pixelformat) {
211 case V4L2_PIX_FMT_NV12:
212 case V4L2_PIX_FMT_NV16:
215 case V4L2_PIX_FMT_RGB565:
217 case V4L2_PIX_FMT_RGB565X:
220 case V4L2_PIX_FMT_RGB24:
225 sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap);
226 sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff);
227 sh_vou_schedule_next(vou_dev, vb);
230 static void free_buffer(struct videobuf_queue *vq, struct videobuf_buffer *vb)
232 BUG_ON(in_interrupt());
234 /* Wait until this buffer is no longer in STATE_QUEUED or STATE_ACTIVE */
235 videobuf_waiton(vq, vb, 0, 0);
236 videobuf_dma_contig_free(vq, vb);
237 vb->state = VIDEOBUF_NEEDS_INIT;
240 /* Locking: caller holds fop_lock mutex */
241 static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count,
244 struct video_device *vdev = vq->priv_data;
245 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
247 *size = vou_fmt[vou_dev->pix_idx].bpp * vou_dev->pix.width *
248 vou_dev->pix.height / 8;
253 /* Taking into account maximum frame size, *count will stay >= 2 */
254 if (PAGE_ALIGN(*size) * *count > 4 * 1024 * 1024)
255 *count = 4 * 1024 * 1024 / PAGE_ALIGN(*size);
257 dev_dbg(vq->dev, "%s(): count=%d, size=%d\n", __func__, *count, *size);
262 /* Locking: caller holds fop_lock mutex */
263 static int sh_vou_buf_prepare(struct videobuf_queue *vq,
264 struct videobuf_buffer *vb,
265 enum v4l2_field field)
267 struct video_device *vdev = vq->priv_data;
268 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
269 struct v4l2_pix_format *pix = &vou_dev->pix;
270 int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
273 dev_dbg(vq->dev, "%s()\n", __func__);
275 if (vb->width != pix->width ||
276 vb->height != pix->height ||
277 vb->field != pix->field) {
278 vb->width = pix->width;
279 vb->height = pix->height;
281 if (vb->state != VIDEOBUF_NEEDS_INIT)
285 vb->size = vb->height * bytes_per_line;
286 if (vb->baddr && vb->bsize < vb->size) {
287 /* User buffer too small */
288 dev_warn(vq->dev, "User buffer too small: [%u] @ %lx\n",
289 vb->bsize, vb->baddr);
293 if (vb->state == VIDEOBUF_NEEDS_INIT) {
294 ret = videobuf_iolock(vq, vb, NULL);
296 dev_warn(vq->dev, "IOLOCK buf-type %d: %d\n",
300 vb->state = VIDEOBUF_PREPARED;
304 "%s(): fmt #%d, %u bytes per line, phys 0x%x, type %d, state %d\n",
305 __func__, vou_dev->pix_idx, bytes_per_line,
306 videobuf_to_dma_contig(vb), vb->memory, vb->state);
311 /* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
312 static void sh_vou_buf_queue(struct videobuf_queue *vq,
313 struct videobuf_buffer *vb)
315 struct video_device *vdev = vq->priv_data;
316 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
318 dev_dbg(vq->dev, "%s()\n", __func__);
320 vb->state = VIDEOBUF_QUEUED;
321 list_add_tail(&vb->queue, &vou_dev->queue);
323 if (vou_dev->status == SH_VOU_RUNNING) {
325 } else if (!vou_dev->active) {
326 vou_dev->active = vb;
327 /* Start from side A: we use mirror addresses, so, set B */
328 sh_vou_reg_a_write(vou_dev, VOURPR, 1);
329 dev_dbg(vq->dev, "%s: first buffer status 0x%x\n", __func__,
330 sh_vou_reg_a_read(vou_dev, VOUSTR));
331 sh_vou_schedule_next(vou_dev, vb);
332 /* Only activate VOU after the second buffer */
333 } else if (vou_dev->active->queue.next == &vb->queue) {
334 /* Second buffer - initialise register side B */
335 sh_vou_reg_a_write(vou_dev, VOURPR, 0);
336 sh_vou_stream_start(vou_dev, vb);
338 /* Register side switching with frame VSYNC */
339 sh_vou_reg_a_write(vou_dev, VOURCR, 5);
340 dev_dbg(vq->dev, "%s: second buffer status 0x%x\n", __func__,
341 sh_vou_reg_a_read(vou_dev, VOUSTR));
343 /* Enable End-of-Frame (VSYNC) interrupts */
344 sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004);
345 /* Two buffers on the queue - activate the hardware */
347 vou_dev->status = SH_VOU_RUNNING;
348 sh_vou_reg_a_write(vou_dev, VOUER, 0x107);
352 static void sh_vou_buf_release(struct videobuf_queue *vq,
353 struct videobuf_buffer *vb)
355 struct video_device *vdev = vq->priv_data;
356 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
359 dev_dbg(vq->dev, "%s()\n", __func__);
361 spin_lock_irqsave(&vou_dev->lock, flags);
363 if (vou_dev->active == vb) {
365 sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
366 /* ...but the current frame will complete */
367 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
368 vou_dev->active = NULL;
371 if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED)) {
372 vb->state = VIDEOBUF_ERROR;
373 list_del(&vb->queue);
376 spin_unlock_irqrestore(&vou_dev->lock, flags);
381 static struct videobuf_queue_ops sh_vou_video_qops = {
382 .buf_setup = sh_vou_buf_setup,
383 .buf_prepare = sh_vou_buf_prepare,
384 .buf_queue = sh_vou_buf_queue,
385 .buf_release = sh_vou_buf_release,
389 static int sh_vou_querycap(struct file *file, void *priv,
390 struct v4l2_capability *cap)
392 struct sh_vou_file *vou_file = priv;
394 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
396 strlcpy(cap->card, "SuperH VOU", sizeof(cap->card));
397 cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
401 /* Enumerate formats, that the device can accept from the user */
402 static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv,
403 struct v4l2_fmtdesc *fmt)
405 struct sh_vou_file *vou_file = priv;
407 if (fmt->index >= ARRAY_SIZE(vou_fmt))
410 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
412 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
413 strlcpy(fmt->description, vou_fmt[fmt->index].desc,
414 sizeof(fmt->description));
415 fmt->pixelformat = vou_fmt[fmt->index].pfmt;
420 static int sh_vou_g_fmt_vid_out(struct file *file, void *priv,
421 struct v4l2_format *fmt)
423 struct video_device *vdev = video_devdata(file);
424 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
426 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
428 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
429 fmt->fmt.pix = vou_dev->pix;
434 static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4};
435 static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1};
436 static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3};
437 static const unsigned char vou_scale_v_num[] = {1, 2, 4};
438 static const unsigned char vou_scale_v_den[] = {1, 1, 1};
439 static const unsigned char vou_scale_v_fld[] = {0, 1};
441 static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev,
442 int pix_idx, int w_idx, int h_idx)
444 struct sh_vou_fmt *fmt = vou_fmt + pix_idx;
445 unsigned int black_left, black_top, width_max, height_max,
446 frame_in_height, frame_out_height, frame_out_top;
447 struct v4l2_rect *rect = &vou_dev->rect;
448 struct v4l2_pix_format *pix = &vou_dev->pix;
449 u32 vouvcr = 0, dsr_h, dsr_v;
451 if (vou_dev->std & V4L2_STD_525_60) {
459 frame_in_height = pix->height / 2;
460 frame_out_height = rect->height / 2;
461 frame_out_top = rect->top / 2;
464 * Cropping scheme: max useful image is 720x480, and the total video
465 * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts
466 * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock,
467 * of which the first 33 / 25 clocks HSYNC must be held active. This
468 * has to be configured in CR[HW]. 1 pixel equals 2 clock periods.
469 * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives
470 * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area,
471 * beyond DSR, specified on the left and top by the VPR register "black
472 * pixels" and out-of-image area (DPR) "background pixels." We fix VPR
473 * at 138 / 144 : 20, because that's the HSYNC timing, that our first
474 * client requires, and that's exactly what leaves us 720 pixels for the
475 * image; we leave VPR[VVP] at default 20 for now, because the client
476 * doesn't seem to have any special requirements for it. Otherwise we
477 * could also set it to max - 240 = 22 / 72. Thus VPR depends only on
478 * the selected standard, and DPR and DSR are selected according to
479 * cropping. Q: how does the client detect the first valid line? Does
480 * HSYNC stay inactive during invalid (black) lines?
482 black_left = width_max - VOU_MAX_IMAGE_WIDTH;
485 dsr_h = rect->width + rect->left;
486 dsr_v = frame_out_height + frame_out_top;
488 dev_dbg(vou_dev->v4l2_dev.dev,
489 "image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n",
490 pix->width, frame_in_height, black_left, black_top,
491 rect->left, frame_out_top, dsr_h, dsr_v);
493 /* VOUISR height - half of a frame height in frame mode */
494 sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height);
495 sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top);
496 sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top);
497 sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v);
500 * if necessary, we could set VOUHIR to
501 * max(black_left + dsr_h, width_max) here
505 vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4);
507 vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1];
509 dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr);
511 /* To produce a colour bar for testing set bit 23 of VOUVCR */
512 sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr);
513 sh_vou_reg_ab_write(vou_dev, VOUDFR,
514 fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16));
517 struct sh_vou_geometry {
518 struct v4l2_rect output;
519 unsigned int in_width;
520 unsigned int in_height;
526 * Find input geometry, that we can use to produce output, closest to the
527 * requested rectangle, using VOU scaling
529 static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std)
531 /* The compiler cannot know, that best and idx will indeed be set */
532 unsigned int best_err = UINT_MAX, best = 0, img_height_max;
535 if (std & V4L2_STD_525_60)
536 img_height_max = 480;
538 img_height_max = 576;
540 /* Image width must be a multiple of 4 */
541 v4l_bound_align_image(&geo->in_width, 0, VOU_MAX_IMAGE_WIDTH, 2,
542 &geo->in_height, 0, img_height_max, 1, 0);
544 /* Select scales to come as close as possible to the output image */
545 for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) {
547 unsigned int found = geo->output.width * vou_scale_h_den[i] /
550 if (found > VOU_MAX_IMAGE_WIDTH)
551 /* scales increase */
554 err = abs(found - geo->in_width);
555 if (err < best_err) {
564 geo->in_width = best;
565 geo->scale_idx_h = idx;
569 /* This loop can be replaced with one division */
570 for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) {
572 unsigned int found = geo->output.height * vou_scale_v_den[i] /
575 if (found > img_height_max)
576 /* scales increase */
579 err = abs(found - geo->in_height);
580 if (err < best_err) {
589 geo->in_height = best;
590 geo->scale_idx_v = idx;
594 * Find output geometry, that we can produce, using VOU scaling, closest to
595 * the requested rectangle
597 static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std)
599 unsigned int best_err = UINT_MAX, best = geo->in_width,
600 width_max, height_max, img_height_max;
603 if (std & V4L2_STD_525_60) {
605 height_max = 262 * 2;
606 img_height_max = 480;
609 height_max = 312 * 2;
610 img_height_max = 576;
613 /* Select scales to come as close as possible to the output image */
614 for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) {
616 unsigned int found = geo->in_width * vou_scale_h_num[i] /
619 if (found > VOU_MAX_IMAGE_WIDTH)
620 /* scales increase */
623 err = abs(found - geo->output.width);
624 if (err < best_err) {
633 geo->output.width = best;
634 geo->scale_idx_h = idx;
635 if (geo->output.left + best > width_max)
636 geo->output.left = width_max - best;
638 pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width,
639 vou_scale_h_num[idx], vou_scale_h_den[idx], best);
643 /* This loop can be replaced with one division */
644 for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) {
646 unsigned int found = geo->in_height * vou_scale_v_num[i] /
649 if (found > img_height_max)
650 /* scales increase */
653 err = abs(found - geo->output.height);
654 if (err < best_err) {
663 geo->output.height = best;
664 geo->scale_idx_v = idx;
665 if (geo->output.top + best > height_max)
666 geo->output.top = height_max - best;
668 pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height,
669 vou_scale_v_num[idx], vou_scale_v_den[idx], best);
672 static int sh_vou_s_fmt_vid_out(struct file *file, void *priv,
673 struct v4l2_format *fmt)
675 struct video_device *vdev = video_devdata(file);
676 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
677 struct v4l2_pix_format *pix = &fmt->fmt.pix;
678 unsigned int img_height_max;
680 struct sh_vou_geometry geo;
681 struct v4l2_mbus_framefmt mbfmt = {
682 /* Revisit: is this the correct code? */
683 .code = V4L2_MBUS_FMT_YUYV8_2X8,
684 .field = V4L2_FIELD_INTERLACED,
685 .colorspace = V4L2_COLORSPACE_SMPTE170M,
689 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__,
690 vou_dev->rect.width, vou_dev->rect.height,
691 pix->width, pix->height);
693 if (pix->field == V4L2_FIELD_ANY)
694 pix->field = V4L2_FIELD_NONE;
696 if (fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
697 pix->field != V4L2_FIELD_NONE)
700 for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
701 if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
704 if (pix_idx == ARRAY_SIZE(vou_fmt))
707 if (vou_dev->std & V4L2_STD_525_60)
708 img_height_max = 480;
710 img_height_max = 576;
712 /* Image width must be a multiple of 4 */
713 v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 2,
714 &pix->height, 0, img_height_max, 1, 0);
716 geo.in_width = pix->width;
717 geo.in_height = pix->height;
718 geo.output = vou_dev->rect;
720 vou_adjust_output(&geo, vou_dev->std);
722 mbfmt.width = geo.output.width;
723 mbfmt.height = geo.output.height;
724 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
726 /* Must be implemented, so, don't check for -ENOIOCTLCMD */
730 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__,
731 geo.output.width, geo.output.height, mbfmt.width, mbfmt.height);
734 if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH ||
735 (unsigned)mbfmt.height > img_height_max ||
736 mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8)
739 if (mbfmt.width != geo.output.width ||
740 mbfmt.height != geo.output.height) {
741 geo.output.width = mbfmt.width;
742 geo.output.height = mbfmt.height;
744 vou_adjust_input(&geo, vou_dev->std);
747 /* We tried to preserve output rectangle, but it could have changed */
748 vou_dev->rect = geo.output;
749 pix->width = geo.in_width;
750 pix->height = geo.in_height;
752 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__,
753 pix->width, pix->height);
755 vou_dev->pix_idx = pix_idx;
759 sh_vou_configure_geometry(vou_dev, pix_idx,
760 geo.scale_idx_h, geo.scale_idx_v);
765 static int sh_vou_try_fmt_vid_out(struct file *file, void *priv,
766 struct v4l2_format *fmt)
768 struct sh_vou_file *vou_file = priv;
769 struct v4l2_pix_format *pix = &fmt->fmt.pix;
772 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
774 fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
775 pix->field = V4L2_FIELD_NONE;
777 v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 1,
778 &pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0);
780 for (i = 0; ARRAY_SIZE(vou_fmt); i++)
781 if (vou_fmt[i].pfmt == pix->pixelformat)
784 pix->pixelformat = vou_fmt[0].pfmt;
789 static int sh_vou_reqbufs(struct file *file, void *priv,
790 struct v4l2_requestbuffers *req)
792 struct sh_vou_file *vou_file = priv;
794 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
796 if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
799 return videobuf_reqbufs(&vou_file->vbq, req);
802 static int sh_vou_querybuf(struct file *file, void *priv,
803 struct v4l2_buffer *b)
805 struct sh_vou_file *vou_file = priv;
807 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
809 return videobuf_querybuf(&vou_file->vbq, b);
812 static int sh_vou_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
814 struct sh_vou_file *vou_file = priv;
816 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
818 return videobuf_qbuf(&vou_file->vbq, b);
821 static int sh_vou_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
823 struct sh_vou_file *vou_file = priv;
825 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
827 return videobuf_dqbuf(&vou_file->vbq, b, file->f_flags & O_NONBLOCK);
830 static int sh_vou_streamon(struct file *file, void *priv,
831 enum v4l2_buf_type buftype)
833 struct video_device *vdev = video_devdata(file);
834 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
835 struct sh_vou_file *vou_file = priv;
838 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
840 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
842 if (ret < 0 && ret != -ENOIOCTLCMD)
845 /* This calls our .buf_queue() (== sh_vou_buf_queue) */
846 return videobuf_streamon(&vou_file->vbq);
849 static int sh_vou_streamoff(struct file *file, void *priv,
850 enum v4l2_buf_type buftype)
852 struct video_device *vdev = video_devdata(file);
853 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
854 struct sh_vou_file *vou_file = priv;
856 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
859 * This calls buf_release from host driver's videobuf_queue_ops for all
860 * remaining buffers. When the last buffer is freed, stop streaming
862 videobuf_streamoff(&vou_file->vbq);
863 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0);
868 static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt)
872 pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n",
874 case SH_VOU_BUS_8BIT:
876 case SH_VOU_BUS_16BIT:
878 case SH_VOU_BUS_BT656:
883 static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
885 struct video_device *vdev = video_devdata(file);
886 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
889 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, *std_id);
891 if (*std_id & ~vdev->tvnorms)
894 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
895 s_std_output, *std_id);
896 /* Shall we continue, if the subdev doesn't support .s_std_output()? */
897 if (ret < 0 && ret != -ENOIOCTLCMD)
900 if (*std_id & V4L2_STD_525_60)
901 sh_vou_reg_ab_set(vou_dev, VOUCR,
902 sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29);
904 sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29);
906 vou_dev->std = *std_id;
911 static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std)
913 struct video_device *vdev = video_devdata(file);
914 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
916 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
923 static int sh_vou_g_crop(struct file *file, void *fh, struct v4l2_crop *a)
925 struct video_device *vdev = video_devdata(file);
926 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
928 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
930 a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
931 a->c = vou_dev->rect;
936 /* Assume a dull encoder, do all the work ourselves. */
937 static int sh_vou_s_crop(struct file *file, void *fh, const struct v4l2_crop *a)
939 struct v4l2_crop a_writable = *a;
940 struct video_device *vdev = video_devdata(file);
941 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
942 struct v4l2_rect *rect = &a_writable.c;
943 struct v4l2_crop sd_crop = {.type = V4L2_BUF_TYPE_VIDEO_OUTPUT};
944 struct v4l2_pix_format *pix = &vou_dev->pix;
945 struct sh_vou_geometry geo;
946 struct v4l2_mbus_framefmt mbfmt = {
947 /* Revisit: is this the correct code? */
948 .code = V4L2_MBUS_FMT_YUYV8_2X8,
949 .field = V4L2_FIELD_INTERLACED,
950 .colorspace = V4L2_COLORSPACE_SMPTE170M,
952 unsigned int img_height_max;
955 dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u@%u:%u\n", __func__,
956 rect->width, rect->height, rect->left, rect->top);
958 if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
961 if (vou_dev->std & V4L2_STD_525_60)
962 img_height_max = 480;
964 img_height_max = 576;
966 v4l_bound_align_image(&rect->width, 0, VOU_MAX_IMAGE_WIDTH, 1,
967 &rect->height, 0, img_height_max, 1, 0);
969 if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH)
970 rect->left = VOU_MAX_IMAGE_WIDTH - rect->width;
972 if (rect->height + rect->top > img_height_max)
973 rect->top = img_height_max - rect->height;
976 geo.in_width = pix->width;
977 geo.in_height = pix->height;
979 /* Configure the encoder one-to-one, position at 0, ignore errors */
980 sd_crop.c.width = geo.output.width;
981 sd_crop.c.height = geo.output.height;
983 * We first issue a S_CROP, so that the subsequent S_FMT delivers the
984 * final encoder configuration.
986 v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
988 mbfmt.width = geo.output.width;
989 mbfmt.height = geo.output.height;
990 ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
992 /* Must be implemented, so, don't check for -ENOIOCTLCMD */
997 if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH ||
998 (unsigned)mbfmt.height > img_height_max ||
999 mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8)
1002 geo.output.width = mbfmt.width;
1003 geo.output.height = mbfmt.height;
1006 * No down-scaling. According to the API, current call has precedence:
1007 * http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two.
1009 vou_adjust_input(&geo, vou_dev->std);
1011 /* We tried to preserve output rectangle, but it could have changed */
1012 vou_dev->rect = geo.output;
1013 pix->width = geo.in_width;
1014 pix->height = geo.in_height;
1016 sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx,
1017 geo.scale_idx_h, geo.scale_idx_v);
1023 * Total field: NTSC 858 x 2 * 262/263, PAL 864 x 2 * 312/313, default rectangle
1024 * is the initial register values, height takes the interlaced format into
1025 * account. The actual image can only go up to 720 x 2 * 240, So, VOUVPR can
1026 * actually only meaningfully contain values <= 720 and <= 240 respectively, and
1027 * not <= 864 and <= 312.
1029 static int sh_vou_cropcap(struct file *file, void *priv,
1030 struct v4l2_cropcap *a)
1032 struct sh_vou_file *vou_file = priv;
1034 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
1036 a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1039 a->bounds.width = VOU_MAX_IMAGE_WIDTH;
1040 a->bounds.height = VOU_MAX_IMAGE_HEIGHT;
1041 /* Default = max, set VOUDPR = 0, which is not hardware default */
1042 a->defrect.left = 0;
1044 a->defrect.width = VOU_MAX_IMAGE_WIDTH;
1045 a->defrect.height = VOU_MAX_IMAGE_HEIGHT;
1046 a->pixelaspect.numerator = 1;
1047 a->pixelaspect.denominator = 1;
1052 static irqreturn_t sh_vou_isr(int irq, void *dev_id)
1054 struct sh_vou_device *vou_dev = dev_id;
1055 static unsigned long j;
1056 struct videobuf_buffer *vb;
1059 u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked;
1060 u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR);
1062 if (!(irq_status & 0x300)) {
1063 if (printk_timed_ratelimit(&j, 500))
1064 dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n",
1069 spin_lock(&vou_dev->lock);
1070 if (!vou_dev->active || list_empty(&vou_dev->queue)) {
1071 if (printk_timed_ratelimit(&j, 500))
1072 dev_warn(vou_dev->v4l2_dev.dev,
1073 "IRQ without active buffer: %x!\n", irq_status);
1074 /* Just ack: buf_release will disable further interrupts */
1075 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300);
1076 spin_unlock(&vou_dev->lock);
1080 masked = ~(0x300 & irq_status) & irq_status & 0x30304;
1081 dev_dbg(vou_dev->v4l2_dev.dev,
1082 "IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n",
1083 irq_status, masked, vou_status, cnt);
1086 side = vou_status & 0x10000;
1088 /* Clear only set interrupts */
1089 sh_vou_reg_a_write(vou_dev, VOUIR, masked);
1091 vb = vou_dev->active;
1092 list_del(&vb->queue);
1094 vb->state = VIDEOBUF_DONE;
1095 do_gettimeofday(&vb->ts);
1099 if (list_empty(&vou_dev->queue)) {
1101 dev_dbg(vou_dev->v4l2_dev.dev, "%s: queue empty after %d\n",
1103 sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
1104 vou_dev->active = NULL;
1105 vou_dev->status = SH_VOU_INITIALISING;
1106 /* Disable End-of-Frame (VSYNC) interrupts */
1107 sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
1108 spin_unlock(&vou_dev->lock);
1112 vou_dev->active = list_entry(vou_dev->queue.next,
1113 struct videobuf_buffer, queue);
1115 if (vou_dev->active->queue.next != &vou_dev->queue) {
1116 struct videobuf_buffer *new = list_entry(vou_dev->active->queue.next,
1117 struct videobuf_buffer, queue);
1118 sh_vou_schedule_next(vou_dev, new);
1121 spin_unlock(&vou_dev->lock);
1126 static int sh_vou_hw_init(struct sh_vou_device *vou_dev)
1128 struct sh_vou_pdata *pdata = vou_dev->pdata;
1129 u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29;
1132 /* Disable all IRQs */
1133 sh_vou_reg_a_write(vou_dev, VOUIR, 0);
1135 /* Reset VOU interfaces - registers unaffected */
1136 sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101);
1137 while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101))
1143 dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i);
1145 if (pdata->flags & SH_VOU_PCLK_FALLING)
1147 if (pdata->flags & SH_VOU_HSYNC_LOW)
1149 if (pdata->flags & SH_VOU_VSYNC_LOW)
1151 sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000);
1153 /* Manual register side switching at first */
1154 sh_vou_reg_a_write(vou_dev, VOURCR, 4);
1155 /* Default - fixed HSYNC length, can be made configurable is required */
1156 sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000);
1161 /* File operations */
1162 static int sh_vou_open(struct file *file)
1164 struct video_device *vdev = video_devdata(file);
1165 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1166 struct sh_vou_file *vou_file = kzalloc(sizeof(struct sh_vou_file),
1172 dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
1174 file->private_data = vou_file;
1176 if (mutex_lock_interruptible(&vou_dev->fop_lock))
1177 return -ERESTARTSYS;
1178 if (atomic_inc_return(&vou_dev->use_count) == 1) {
1181 vou_dev->status = SH_VOU_INITIALISING;
1182 pm_runtime_get_sync(vdev->v4l2_dev->dev);
1183 ret = sh_vou_hw_init(vou_dev);
1185 atomic_dec(&vou_dev->use_count);
1186 pm_runtime_put(vdev->v4l2_dev->dev);
1187 vou_dev->status = SH_VOU_IDLE;
1188 mutex_unlock(&vou_dev->fop_lock);
1193 videobuf_queue_dma_contig_init(&vou_file->vbq, &sh_vou_video_qops,
1194 vou_dev->v4l2_dev.dev, &vou_dev->lock,
1195 V4L2_BUF_TYPE_VIDEO_OUTPUT,
1197 sizeof(struct videobuf_buffer), vdev,
1198 &vou_dev->fop_lock);
1199 mutex_unlock(&vou_dev->fop_lock);
1204 static int sh_vou_release(struct file *file)
1206 struct video_device *vdev = video_devdata(file);
1207 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1208 struct sh_vou_file *vou_file = file->private_data;
1210 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
1212 if (!atomic_dec_return(&vou_dev->use_count)) {
1213 mutex_lock(&vou_dev->fop_lock);
1215 vou_dev->status = SH_VOU_IDLE;
1216 sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101);
1217 pm_runtime_put(vdev->v4l2_dev->dev);
1218 mutex_unlock(&vou_dev->fop_lock);
1221 file->private_data = NULL;
1227 static int sh_vou_mmap(struct file *file, struct vm_area_struct *vma)
1229 struct video_device *vdev = video_devdata(file);
1230 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1231 struct sh_vou_file *vou_file = file->private_data;
1234 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
1236 if (mutex_lock_interruptible(&vou_dev->fop_lock))
1237 return -ERESTARTSYS;
1238 ret = videobuf_mmap_mapper(&vou_file->vbq, vma);
1239 mutex_unlock(&vou_dev->fop_lock);
1243 static unsigned int sh_vou_poll(struct file *file, poll_table *wait)
1245 struct video_device *vdev = video_devdata(file);
1246 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1247 struct sh_vou_file *vou_file = file->private_data;
1250 dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
1252 mutex_lock(&vou_dev->fop_lock);
1253 res = videobuf_poll_stream(file, &vou_file->vbq, wait);
1254 mutex_unlock(&vou_dev->fop_lock);
1258 static int sh_vou_g_chip_ident(struct file *file, void *fh,
1259 struct v4l2_dbg_chip_ident *id)
1261 struct video_device *vdev = video_devdata(file);
1262 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1264 return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_chip_ident, id);
1267 #ifdef CONFIG_VIDEO_ADV_DEBUG
1268 static int sh_vou_g_register(struct file *file, void *fh,
1269 struct v4l2_dbg_register *reg)
1271 struct video_device *vdev = video_devdata(file);
1272 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1274 return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_register, reg);
1277 static int sh_vou_s_register(struct file *file, void *fh,
1278 struct v4l2_dbg_register *reg)
1280 struct video_device *vdev = video_devdata(file);
1281 struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
1283 return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, s_register, reg);
1287 /* sh_vou display ioctl operations */
1288 static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = {
1289 .vidioc_querycap = sh_vou_querycap,
1290 .vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out,
1291 .vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out,
1292 .vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out,
1293 .vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out,
1294 .vidioc_reqbufs = sh_vou_reqbufs,
1295 .vidioc_querybuf = sh_vou_querybuf,
1296 .vidioc_qbuf = sh_vou_qbuf,
1297 .vidioc_dqbuf = sh_vou_dqbuf,
1298 .vidioc_streamon = sh_vou_streamon,
1299 .vidioc_streamoff = sh_vou_streamoff,
1300 .vidioc_s_std = sh_vou_s_std,
1301 .vidioc_g_std = sh_vou_g_std,
1302 .vidioc_cropcap = sh_vou_cropcap,
1303 .vidioc_g_crop = sh_vou_g_crop,
1304 .vidioc_s_crop = sh_vou_s_crop,
1305 .vidioc_g_chip_ident = sh_vou_g_chip_ident,
1306 #ifdef CONFIG_VIDEO_ADV_DEBUG
1307 .vidioc_g_register = sh_vou_g_register,
1308 .vidioc_s_register = sh_vou_s_register,
1312 static const struct v4l2_file_operations sh_vou_fops = {
1313 .owner = THIS_MODULE,
1314 .open = sh_vou_open,
1315 .release = sh_vou_release,
1316 .unlocked_ioctl = video_ioctl2,
1317 .mmap = sh_vou_mmap,
1318 .poll = sh_vou_poll,
1321 static const struct video_device sh_vou_video_template = {
1323 .fops = &sh_vou_fops,
1324 .ioctl_ops = &sh_vou_ioctl_ops,
1325 .tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */
1326 .current_norm = V4L2_STD_NTSC_M,
1327 .vfl_dir = VFL_DIR_TX,
1330 static int __devinit sh_vou_probe(struct platform_device *pdev)
1332 struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data;
1333 struct v4l2_rect *rect;
1334 struct v4l2_pix_format *pix;
1335 struct i2c_adapter *i2c_adap;
1336 struct video_device *vdev;
1337 struct sh_vou_device *vou_dev;
1338 struct resource *reg_res, *region;
1339 struct v4l2_subdev *subdev;
1342 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1343 irq = platform_get_irq(pdev, 0);
1345 if (!vou_pdata || !reg_res || irq <= 0) {
1346 dev_err(&pdev->dev, "Insufficient VOU platform information.\n");
1350 vou_dev = kzalloc(sizeof(*vou_dev), GFP_KERNEL);
1354 INIT_LIST_HEAD(&vou_dev->queue);
1355 spin_lock_init(&vou_dev->lock);
1356 mutex_init(&vou_dev->fop_lock);
1357 atomic_set(&vou_dev->use_count, 0);
1358 vou_dev->pdata = vou_pdata;
1359 vou_dev->status = SH_VOU_IDLE;
1361 rect = &vou_dev->rect;
1362 pix = &vou_dev->pix;
1364 /* Fill in defaults */
1365 vou_dev->std = sh_vou_video_template.current_norm;
1368 rect->width = VOU_MAX_IMAGE_WIDTH;
1370 pix->width = VOU_MAX_IMAGE_WIDTH;
1372 pix->pixelformat = V4L2_PIX_FMT_YVYU;
1373 pix->field = V4L2_FIELD_NONE;
1374 pix->bytesperline = VOU_MAX_IMAGE_WIDTH * 2;
1375 pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480;
1376 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
1378 region = request_mem_region(reg_res->start, resource_size(reg_res),
1381 dev_err(&pdev->dev, "VOU region already claimed\n");
1386 vou_dev->base = ioremap(reg_res->start, resource_size(reg_res));
1387 if (!vou_dev->base) {
1392 ret = request_irq(irq, sh_vou_isr, 0, "vou", vou_dev);
1396 ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev);
1398 dev_err(&pdev->dev, "Error registering v4l2 device\n");
1402 /* Allocate memory for video device */
1403 vdev = video_device_alloc();
1409 *vdev = sh_vou_video_template;
1410 if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT)
1411 vdev->tvnorms |= V4L2_STD_PAL;
1412 vdev->v4l2_dev = &vou_dev->v4l2_dev;
1413 vdev->release = video_device_release;
1414 vdev->lock = &vou_dev->fop_lock;
1416 vou_dev->vdev = vdev;
1417 video_set_drvdata(vdev, vou_dev);
1419 pm_runtime_enable(&pdev->dev);
1420 pm_runtime_resume(&pdev->dev);
1422 i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap);
1428 ret = sh_vou_hw_init(vou_dev);
1432 subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap,
1433 vou_pdata->board_info, NULL);
1439 ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1448 i2c_put_adapter(i2c_adap);
1450 video_device_release(vdev);
1451 pm_runtime_disable(&pdev->dev);
1453 v4l2_device_unregister(&vou_dev->v4l2_dev);
1455 free_irq(irq, vou_dev);
1457 iounmap(vou_dev->base);
1459 release_mem_region(reg_res->start, resource_size(reg_res));
1465 static int __devexit sh_vou_remove(struct platform_device *pdev)
1467 int irq = platform_get_irq(pdev, 0);
1468 struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
1469 struct sh_vou_device *vou_dev = container_of(v4l2_dev,
1470 struct sh_vou_device, v4l2_dev);
1471 struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next,
1472 struct v4l2_subdev, list);
1473 struct i2c_client *client = v4l2_get_subdevdata(sd);
1474 struct resource *reg_res;
1477 free_irq(irq, vou_dev);
1478 pm_runtime_disable(&pdev->dev);
1479 video_unregister_device(vou_dev->vdev);
1480 i2c_put_adapter(client->adapter);
1481 v4l2_device_unregister(&vou_dev->v4l2_dev);
1482 iounmap(vou_dev->base);
1483 reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1485 release_mem_region(reg_res->start, resource_size(reg_res));
1490 static struct platform_driver __refdata sh_vou = {
1491 .remove = __devexit_p(sh_vou_remove),
1494 .owner = THIS_MODULE,
1498 static int __init sh_vou_init(void)
1500 return platform_driver_probe(&sh_vou, sh_vou_probe);
1503 static void __exit sh_vou_exit(void)
1505 platform_driver_unregister(&sh_vou);
1508 module_init(sh_vou_init);
1509 module_exit(sh_vou_exit);
1511 MODULE_DESCRIPTION("SuperH VOU driver");
1512 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
1513 MODULE_LICENSE("GPL v2");
1514 MODULE_VERSION("0.1.0");
1515 MODULE_ALIAS("platform:sh-vou");