| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Anatolij Gustschin | 7811 | 92.80% | 7 | 14.89% |
| Hans Verkuil | 381 | 4.53% | 14 | 29.79% |
| Mauro Carvalho Chehab | 89 | 1.06% | 7 | 14.89% |
| Alexey Khoroshilov | 49 | 0.58% | 1 | 2.13% |
| Gerhard Sittig | 39 | 0.46% | 2 | 4.26% |
| Kees Cook | 16 | 0.19% | 1 | 2.13% |
| Rob Herring | 6 | 0.07% | 1 | 2.13% |
| Grant C. Likely | 5 | 0.06% | 2 | 4.26% |
| Geliang Tang | 4 | 0.05% | 1 | 2.13% |
| Al Viro | 3 | 0.04% | 2 | 4.26% |
| Linus Torvalds | 3 | 0.04% | 1 | 2.13% |
| Thomas Gleixner | 2 | 0.02% | 1 | 2.13% |
| Bhumika Goyal | 2 | 0.02% | 2 | 4.26% |
| Wei Yongjun | 2 | 0.02% | 1 | 2.13% |
| Axel Lin | 2 | 0.02% | 1 | 2.13% |
| Laurent Pinchart | 1 | 0.01% | 1 | 2.13% |
| Fabian Frederick | 1 | 0.01% | 1 | 2.13% |
| Arvind Yadav | 1 | 0.01% | 1 | 2.13% |
| Total | 8417 | 47 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. * * Freescale VIU video driver * * Authors: Hongjun Chen <hong-jun.chen@freescale.com> * Porting to 2.6.35 by DENX Software Engineering, * Anatolij Gustschin <agust@denx.de> */ #include <linux/module.h> #include <linux/clk.h> #include <linux/kernel.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/slab.h> #include <media/v4l2-common.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-fh.h> #include <media/v4l2-event.h> #include <media/videobuf-dma-contig.h> #define DRV_NAME "fsl_viu" #define VIU_VERSION "0.5.1" /* Allow building this driver with COMPILE_TEST */ #ifndef CONFIG_PPC #define out_be32(v, a) iowrite32be(a, (void __iomem *)v) #define in_be32(a) ioread32be((void __iomem *)a) #endif #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ #define VIU_VID_MEM_LIMIT 4 /* Video memory limit, in Mb */ /* I2C address of video decoder chip is 0x4A */ #define VIU_VIDEO_DECODER_ADDR 0x25 static int info_level; #define dprintk(level, fmt, arg...) \ do { \ if (level <= info_level) \ printk(KERN_DEBUG "viu: " fmt , ## arg); \ } while (0) /* * Basic structures */ struct viu_fmt { u32 fourcc; /* v4l2 format id */ u32 pixelformat; int depth; }; static struct viu_fmt formats[] = { { .fourcc = V4L2_PIX_FMT_RGB565, .pixelformat = V4L2_PIX_FMT_RGB565, .depth = 16, }, { .fourcc = V4L2_PIX_FMT_RGB32, .pixelformat = V4L2_PIX_FMT_RGB32, .depth = 32, } }; struct viu_dev; struct viu_buf; /* buffer for one video frame */ struct viu_buf { /* common v4l buffer stuff -- must be first */ struct videobuf_buffer vb; struct viu_fmt *fmt; }; struct viu_dmaqueue { struct viu_dev *dev; struct list_head active; struct list_head queued; struct timer_list timeout; }; struct viu_status { u32 field_irq; u32 vsync_irq; u32 hsync_irq; u32 vstart_irq; u32 dma_end_irq; u32 error_irq; }; struct viu_reg { u32 status_cfg; u32 luminance; u32 chroma_r; u32 chroma_g; u32 chroma_b; u32 field_base_addr; u32 dma_inc; u32 picture_count; u32 req_alarm; u32 alpha; } __attribute__ ((packed)); struct viu_dev { struct v4l2_device v4l2_dev; struct v4l2_ctrl_handler hdl; struct mutex lock; spinlock_t slock; int users; struct device *dev; /* various device info */ struct video_device *vdev; struct viu_dmaqueue vidq; enum v4l2_field capfield; int field; int first; int dma_done; /* Hardware register area */ struct viu_reg __iomem *vr; /* Interrupt vector */ int irq; struct viu_status irqs; /* video overlay */ struct v4l2_framebuffer ovbuf; struct viu_fmt *ovfmt; unsigned int ovenable; enum v4l2_field ovfield; /* crop */ struct v4l2_rect crop_current; /* clock pointer */ struct clk *clk; /* decoder */ struct v4l2_subdev *decoder; v4l2_std_id std; }; struct viu_fh { /* must remain the first field of this struct */ struct v4l2_fh fh; struct viu_dev *dev; /* video capture */ struct videobuf_queue vb_vidq; spinlock_t vbq_lock; /* spinlock for the videobuf queue */ /* video overlay */ struct v4l2_window win; struct v4l2_clip clips[1]; /* video capture */ struct viu_fmt *fmt; int width, height, sizeimage; enum v4l2_buf_type type; }; static struct viu_reg reg_val; /* * Macro definitions of VIU registers */ /* STATUS_CONFIG register */ enum status_config { SOFT_RST = 1 << 0, ERR_MASK = 0x0f << 4, /* Error code mask */ ERR_NO = 0x00, /* No error */ ERR_DMA_V = 0x01 << 4, /* DMA in vertical active */ ERR_DMA_VB = 0x02 << 4, /* DMA in vertical blanking */ ERR_LINE_TOO_LONG = 0x04 << 4, /* Line too long */ ERR_TOO_MANG_LINES = 0x05 << 4, /* Too many lines in field */ ERR_LINE_TOO_SHORT = 0x06 << 4, /* Line too short */ ERR_NOT_ENOUGH_LINE = 0x07 << 4, /* Not enough lines in field */ ERR_FIFO_OVERFLOW = 0x08 << 4, /* FIFO overflow */ ERR_FIFO_UNDERFLOW = 0x09 << 4, /* FIFO underflow */ ERR_1bit_ECC = 0x0a << 4, /* One bit ECC error */ ERR_MORE_ECC = 0x0b << 4, /* Two/more bits ECC error */ INT_FIELD_EN = 0x01 << 8, /* Enable field interrupt */ INT_VSYNC_EN = 0x01 << 9, /* Enable vsync interrupt */ INT_HSYNC_EN = 0x01 << 10, /* Enable hsync interrupt */ INT_VSTART_EN = 0x01 << 11, /* Enable vstart interrupt */ INT_DMA_END_EN = 0x01 << 12, /* Enable DMA end interrupt */ INT_ERROR_EN = 0x01 << 13, /* Enable error interrupt */ INT_ECC_EN = 0x01 << 14, /* Enable ECC interrupt */ INT_FIELD_STATUS = 0x01 << 16, /* field interrupt status */ INT_VSYNC_STATUS = 0x01 << 17, /* vsync interrupt status */ INT_HSYNC_STATUS = 0x01 << 18, /* hsync interrupt status */ INT_VSTART_STATUS = 0x01 << 19, /* vstart interrupt status */ INT_DMA_END_STATUS = 0x01 << 20, /* DMA end interrupt status */ INT_ERROR_STATUS = 0x01 << 21, /* error interrupt status */ DMA_ACT = 0x01 << 27, /* Enable DMA transfer */ FIELD_NO = 0x01 << 28, /* Field number */ DITHER_ON = 0x01 << 29, /* Dithering is on */ ROUND_ON = 0x01 << 30, /* Round is on */ MODE_32BIT = 0x01 << 31, /* Data in RGBa888, * 0 in RGB565 */ }; #define norm_maxw() 720 #define norm_maxh() 576 #define INT_ALL_STATUS (INT_FIELD_STATUS | INT_VSYNC_STATUS | \ INT_HSYNC_STATUS | INT_VSTART_STATUS | \ INT_DMA_END_STATUS | INT_ERROR_STATUS) #define NUM_FORMATS ARRAY_SIZE(formats) static irqreturn_t viu_intr(int irq, void *dev_id); static struct viu_fmt *format_by_fourcc(int fourcc) { int i; for (i = 0; i < NUM_FORMATS; i++) { if (formats[i].pixelformat == fourcc) return formats + i; } dprintk(0, "unknown pixelformat:'%4.4s'\n", (char *)&fourcc); return NULL; } static void viu_start_dma(struct viu_dev *dev) { struct viu_reg __iomem *vr = dev->vr; dev->field = 0; /* Enable DMA operation */ out_be32(&vr->status_cfg, SOFT_RST); out_be32(&vr->status_cfg, INT_FIELD_EN); } static void viu_stop_dma(struct viu_dev *dev) { struct viu_reg __iomem *vr = dev->vr; int cnt = 100; u32 status_cfg; out_be32(&vr->status_cfg, 0); /* Clear pending interrupts */ status_cfg = in_be32(&vr->status_cfg); if (status_cfg & 0x3f0000) out_be32(&vr->status_cfg, status_cfg & 0x3f0000); if (status_cfg & DMA_ACT) { do { status_cfg = in_be32(&vr->status_cfg); if (status_cfg & INT_DMA_END_STATUS) break; } while (cnt--); if (cnt < 0) { /* timed out, issue soft reset */ out_be32(&vr->status_cfg, SOFT_RST); out_be32(&vr->status_cfg, 0); } else { /* clear DMA_END and other pending irqs */ out_be32(&vr->status_cfg, status_cfg & 0x3f0000); } } dev->field = 0; } static int restart_video_queue(struct viu_dmaqueue *vidq) { struct viu_buf *buf, *prev; dprintk(1, "%s vidq=%p\n", __func__, vidq); if (!list_empty(&vidq->active)) { buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); dprintk(2, "restart_queue [%p/%d]: restart dma\n", buf, buf->vb.i); viu_stop_dma(vidq->dev); /* cancel all outstanding capture requests */ list_for_each_entry_safe(buf, prev, &vidq->active, vb.queue) { list_del(&buf->vb.queue); buf->vb.state = VIDEOBUF_ERROR; wake_up(&buf->vb.done); } mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); return 0; } prev = NULL; for (;;) { if (list_empty(&vidq->queued)) return 0; buf = list_entry(vidq->queued.next, struct viu_buf, vb.queue); if (prev == NULL) { list_move_tail(&buf->vb.queue, &vidq->active); dprintk(1, "Restarting video dma\n"); viu_stop_dma(vidq->dev); viu_start_dma(vidq->dev); buf->vb.state = VIDEOBUF_ACTIVE; mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); dprintk(2, "[%p/%d] restart_queue - first active\n", buf, buf->vb.i); } else if (prev->vb.width == buf->vb.width && prev->vb.height == buf->vb.height && prev->fmt == buf->fmt) { list_move_tail(&buf->vb.queue, &vidq->active); buf->vb.state = VIDEOBUF_ACTIVE; dprintk(2, "[%p/%d] restart_queue - move to active\n", buf, buf->vb.i); } else { return 0; } prev = buf; } } static void viu_vid_timeout(struct timer_list *t) { struct viu_dev *dev = from_timer(dev, t, vidq.timeout); struct viu_buf *buf; struct viu_dmaqueue *vidq = &dev->vidq; while (!list_empty(&vidq->active)) { buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); list_del(&buf->vb.queue); buf->vb.state = VIDEOBUF_ERROR; wake_up(&buf->vb.done); dprintk(1, "viu/0: [%p/%d] timeout\n", buf, buf->vb.i); } restart_video_queue(vidq); } /* * Videobuf operations */ static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) { struct viu_fh *fh = vq->priv_data; *size = fh->width * fh->height * fh->fmt->depth >> 3; if (*count == 0) *count = 32; while (*size * *count > VIU_VID_MEM_LIMIT * 1024 * 1024) (*count)--; dprintk(1, "%s, count=%d, size=%d\n", __func__, *count, *size); return 0; } static void free_buffer(struct videobuf_queue *vq, struct viu_buf *buf) { struct videobuf_buffer *vb = &buf->vb; void *vaddr = NULL; BUG_ON(in_interrupt()); videobuf_waiton(vq, &buf->vb, 0, 0); if (vq->int_ops && vq->int_ops->vaddr) vaddr = vq->int_ops->vaddr(vb); if (vaddr) videobuf_dma_contig_free(vq, &buf->vb); buf->vb.state = VIDEOBUF_NEEDS_INIT; } inline int buffer_activate(struct viu_dev *dev, struct viu_buf *buf) { struct viu_reg __iomem *vr = dev->vr; int bpp; /* setup the DMA base address */ reg_val.field_base_addr = videobuf_to_dma_contig(&buf->vb); dprintk(1, "buffer_activate [%p/%d]: dma addr 0x%lx\n", buf, buf->vb.i, (unsigned long)reg_val.field_base_addr); /* interlace is on by default, set horizontal DMA increment */ reg_val.status_cfg = 0; bpp = buf->fmt->depth >> 3; switch (bpp) { case 2: reg_val.status_cfg &= ~MODE_32BIT; reg_val.dma_inc = buf->vb.width * 2; break; case 4: reg_val.status_cfg |= MODE_32BIT; reg_val.dma_inc = buf->vb.width * 4; break; default: dprintk(0, "doesn't support color depth(%d)\n", bpp * 8); return -EINVAL; } /* setup picture_count register */ reg_val.picture_count = (buf->vb.height / 2) << 16 | buf->vb.width; reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN; buf->vb.state = VIDEOBUF_ACTIVE; dev->capfield = buf->vb.field; /* reset dma increment if needed */ if (!V4L2_FIELD_HAS_BOTH(buf->vb.field)) reg_val.dma_inc = 0; out_be32(&vr->dma_inc, reg_val.dma_inc); out_be32(&vr->picture_count, reg_val.picture_count); out_be32(&vr->field_base_addr, reg_val.field_base_addr); mod_timer(&dev->vidq.timeout, jiffies + BUFFER_TIMEOUT); return 0; } static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, enum v4l2_field field) { struct viu_fh *fh = vq->priv_data; struct viu_buf *buf = container_of(vb, struct viu_buf, vb); int rc; BUG_ON(fh->fmt == NULL); if (fh->width < 48 || fh->width > norm_maxw() || fh->height < 32 || fh->height > norm_maxh()) return -EINVAL; buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3; if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) return -EINVAL; if (buf->fmt != fh->fmt || buf->vb.width != fh->width || buf->vb.height != fh->height || buf->vb.field != field) { buf->fmt = fh->fmt; buf->vb.width = fh->width; buf->vb.height = fh->height; buf->vb.field = field; } if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { rc = videobuf_iolock(vq, &buf->vb, NULL); if (rc != 0) goto fail; buf->vb.width = fh->width; buf->vb.height = fh->height; buf->vb.field = field; buf->fmt = fh->fmt; } buf->vb.state = VIDEOBUF_PREPARED; return 0; fail: free_buffer(vq, buf); return rc; } static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct viu_buf *buf = container_of(vb, struct viu_buf, vb); struct viu_fh *fh = vq->priv_data; struct viu_dev *dev = fh->dev; struct viu_dmaqueue *vidq = &dev->vidq; struct viu_buf *prev; if (!list_empty(&vidq->queued)) { dprintk(1, "adding vb queue=%p\n", &buf->vb.queue); dprintk(1, "vidq pointer 0x%p, queued 0x%p\n", vidq, &vidq->queued); dprintk(1, "dev %p, queued: self %p, next %p, head %p\n", dev, &vidq->queued, vidq->queued.next, vidq->queued.prev); list_add_tail(&buf->vb.queue, &vidq->queued); buf->vb.state = VIDEOBUF_QUEUED; dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf, buf->vb.i); } else if (list_empty(&vidq->active)) { dprintk(1, "adding vb active=%p\n", &buf->vb.queue); list_add_tail(&buf->vb.queue, &vidq->active); buf->vb.state = VIDEOBUF_ACTIVE; mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); dprintk(2, "[%p/%d] buffer_queue - first active\n", buf, buf->vb.i); buffer_activate(dev, buf); } else { dprintk(1, "adding vb queue2=%p\n", &buf->vb.queue); prev = list_entry(vidq->active.prev, struct viu_buf, vb.queue); if (prev->vb.width == buf->vb.width && prev->vb.height == buf->vb.height && prev->fmt == buf->fmt) { list_add_tail(&buf->vb.queue, &vidq->active); buf->vb.state = VIDEOBUF_ACTIVE; dprintk(2, "[%p/%d] buffer_queue - append to active\n", buf, buf->vb.i); } else { list_add_tail(&buf->vb.queue, &vidq->queued); buf->vb.state = VIDEOBUF_QUEUED; dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf, buf->vb.i); } } } static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct viu_buf *buf = container_of(vb, struct viu_buf, vb); struct viu_fh *fh = vq->priv_data; struct viu_dev *dev = (struct viu_dev *)fh->dev; viu_stop_dma(dev); free_buffer(vq, buf); } static const struct videobuf_queue_ops viu_video_qops = { .buf_setup = buffer_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .buf_release = buffer_release, }; /* * IOCTL vidioc handling */ static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { strscpy(cap->driver, "viu", sizeof(cap->driver)); strscpy(cap->card, "viu", sizeof(cap->card)); strscpy(cap->bus_info, "platform:viu", sizeof(cap->bus_info)); cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_READWRITE; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int vidioc_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *f) { int index = f->index; if (f->index >= NUM_FORMATS) return -EINVAL; f->pixelformat = formats[index].fourcc; return 0; } static int vidioc_g_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) { struct viu_fh *fh = priv; f->fmt.pix.width = fh->width; f->fmt.pix.height = fh->height; f->fmt.pix.field = fh->vb_vidq.field; f->fmt.pix.pixelformat = fh->fmt->pixelformat; f->fmt.pix.bytesperline = (f->fmt.pix.width * fh->fmt->depth) >> 3; f->fmt.pix.sizeimage = fh->sizeimage; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; return 0; } static int vidioc_try_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) { struct viu_fmt *fmt; unsigned int maxw, maxh; fmt = format_by_fourcc(f->fmt.pix.pixelformat); if (!fmt) { dprintk(1, "Fourcc format (0x%08x) invalid.", f->fmt.pix.pixelformat); return -EINVAL; } maxw = norm_maxw(); maxh = norm_maxh(); f->fmt.pix.field = V4L2_FIELD_INTERLACED; if (f->fmt.pix.height < 32) f->fmt.pix.height = 32; if (f->fmt.pix.height > maxh) f->fmt.pix.height = maxh; if (f->fmt.pix.width < 48) f->fmt.pix.width = 48; if (f->fmt.pix.width > maxw) f->fmt.pix.width = maxw; f->fmt.pix.width &= ~0x03; f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; return 0; } static int vidioc_s_fmt_cap(struct file *file, void *priv, struct v4l2_format *f) { struct viu_fh *fh = priv; int ret; ret = vidioc_try_fmt_cap(file, fh, f); if (ret < 0) return ret; fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); fh->width = f->fmt.pix.width; fh->height = f->fmt.pix.height; fh->sizeimage = f->fmt.pix.sizeimage; fh->vb_vidq.field = f->fmt.pix.field; fh->type = f->type; return 0; } static int vidioc_g_fmt_overlay(struct file *file, void *priv, struct v4l2_format *f) { struct viu_fh *fh = priv; f->fmt.win = fh->win; return 0; } static int verify_preview(struct viu_dev *dev, struct v4l2_window *win) { enum v4l2_field field; int maxw, maxh; if (dev->ovbuf.base == NULL) return -EINVAL; if (dev->ovfmt == NULL) return -EINVAL; if (win->w.width < 48 || win->w.height < 32) return -EINVAL; field = win->field; maxw = dev->crop_current.width; maxh = dev->crop_current.height; if (field == V4L2_FIELD_ANY) { field = (win->w.height > maxh/2) ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; } switch (field) { case V4L2_FIELD_TOP: case V4L2_FIELD_BOTTOM: maxh = maxh / 2; break; case V4L2_FIELD_INTERLACED: break; default: return -EINVAL; } win->field = field; if (win->w.width > maxw) win->w.width = maxw; if (win->w.height > maxh) win->w.height = maxh; return 0; } inline void viu_activate_overlay(struct viu_reg __iomem *vr) { out_be32(&vr->field_base_addr, reg_val.field_base_addr); out_be32(&vr->dma_inc, reg_val.dma_inc); out_be32(&vr->picture_count, reg_val.picture_count); } static int viu_setup_preview(struct viu_dev *dev, struct viu_fh *fh) { int bpp; dprintk(1, "%s %dx%d\n", __func__, fh->win.w.width, fh->win.w.height); reg_val.status_cfg = 0; /* setup window */ reg_val.picture_count = (fh->win.w.height / 2) << 16 | fh->win.w.width; /* setup color depth and dma increment */ bpp = dev->ovfmt->depth / 8; switch (bpp) { case 2: reg_val.status_cfg &= ~MODE_32BIT; reg_val.dma_inc = fh->win.w.width * 2; break; case 4: reg_val.status_cfg |= MODE_32BIT; reg_val.dma_inc = fh->win.w.width * 4; break; default: dprintk(0, "device doesn't support color depth(%d)\n", bpp * 8); return -EINVAL; } dev->ovfield = fh->win.field; if (!V4L2_FIELD_HAS_BOTH(dev->ovfield)) reg_val.dma_inc = 0; reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN; /* setup the base address of the overlay buffer */ reg_val.field_base_addr = (u32)(long)dev->ovbuf.base; return 0; } static int vidioc_s_fmt_overlay(struct file *file, void *priv, struct v4l2_format *f) { struct viu_fh *fh = priv; struct viu_dev *dev = (struct viu_dev *)fh->dev; unsigned long flags; int err; err = verify_preview(dev, &f->fmt.win); if (err) return err; fh->win = f->fmt.win; spin_lock_irqsave(&dev->slock, flags); viu_setup_preview(dev, fh); spin_unlock_irqrestore(&dev->slock, flags); return 0; } static int vidioc_try_fmt_overlay(struct file *file, void *priv, struct v4l2_format *f) { return 0; } static int vidioc_overlay(struct file *file, void *priv, unsigned int on) { struct viu_fh *fh = priv; struct viu_dev *dev = (struct viu_dev *)fh->dev; unsigned long flags; if (on) { spin_lock_irqsave(&dev->slock, flags); viu_activate_overlay(dev->vr); dev->ovenable = 1; /* start dma */ viu_start_dma(dev); spin_unlock_irqrestore(&dev->slock, flags); } else { viu_stop_dma(dev); dev->ovenable = 0; } return 0; } static int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg) { struct viu_fh *fh = priv; struct viu_dev *dev = fh->dev; struct v4l2_framebuffer *fb = arg; *fb = dev->ovbuf; fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; return 0; } static int vidioc_s_fbuf(struct file *file, void *priv, const struct v4l2_framebuffer *arg) { struct viu_fh *fh = priv; struct viu_dev *dev = fh->dev; const struct v4l2_framebuffer *fb = arg; struct viu_fmt *fmt; if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) return -EPERM; /* check args */ fmt = format_by_fourcc(fb->fmt.pixelformat); if (fmt == NULL) return -EINVAL; /* ok, accept it */ dev->ovbuf = *fb; dev->ovfmt = fmt; if (dev->ovbuf.fmt.bytesperline == 0) { dev->ovbuf.fmt.bytesperline = dev->ovbuf.fmt.width * fmt->depth / 8; } return 0; } static int vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *p) { struct viu_fh *fh = priv; return videobuf_reqbufs(&fh->vb_vidq, p); } static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct viu_fh *fh = priv; return videobuf_querybuf(&fh->vb_vidq, p); } static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct viu_fh *fh = priv; return videobuf_qbuf(&fh->vb_vidq, p); } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct viu_fh *fh = priv; return videobuf_dqbuf(&fh->vb_vidq, p, file->f_flags & O_NONBLOCK); } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) { struct viu_fh *fh = priv; struct viu_dev *dev = fh->dev; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (fh->type != i) return -EINVAL; if (dev->ovenable) dev->ovenable = 0; viu_start_dma(fh->dev); return videobuf_streamon(&fh->vb_vidq); } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) { struct viu_fh *fh = priv; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (fh->type != i) return -EINVAL; viu_stop_dma(fh->dev); return videobuf_streamoff(&fh->vb_vidq); } #define decoder_call(viu, o, f, args...) \ v4l2_subdev_call(viu->decoder, o, f, ##args) static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std_id) { struct viu_fh *fh = priv; decoder_call(fh->dev, video, querystd, std_id); return 0; } static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id) { struct viu_fh *fh = priv; fh->dev->std = id; decoder_call(fh->dev, video, s_std, id); return 0; } static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std_id) { struct viu_fh *fh = priv; *std_id = fh->dev->std; return 0; } /* only one input in this driver */ static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *inp) { struct viu_fh *fh = priv; if (inp->index != 0) return -EINVAL; inp->type = V4L2_INPUT_TYPE_CAMERA; inp->std = fh->dev->vdev->tvnorms; strscpy(inp->name, "Camera", sizeof(inp->name)); return 0; } static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) { *i = 0; return 0; } static int vidioc_s_input(struct file *file, void *priv, unsigned int i) { struct viu_fh *fh = priv; if (i) return -EINVAL; decoder_call(fh->dev, video, s_routing, i, 0, 0); return 0; } inline void viu_activate_next_buf(struct viu_dev *dev, struct viu_dmaqueue *viuq) { struct viu_dmaqueue *vidq = viuq; struct viu_buf *buf; /* launch another DMA operation for an active/queued buffer */ if (!list_empty(&vidq->active)) { buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); dprintk(1, "start another queued buffer: 0x%p\n", buf); buffer_activate(dev, buf); } else if (!list_empty(&vidq->queued)) { buf = list_entry(vidq->queued.next, struct viu_buf, vb.queue); list_del(&buf->vb.queue); dprintk(1, "start another queued buffer: 0x%p\n", buf); list_add_tail(&buf->vb.queue, &vidq->active); buf->vb.state = VIDEOBUF_ACTIVE; buffer_activate(dev, buf); } } inline void viu_default_settings(struct viu_reg __iomem *vr) { out_be32(&vr->luminance, 0x9512A254); out_be32(&vr->chroma_r, 0x03310000); out_be32(&vr->chroma_g, 0x06600F38); out_be32(&vr->chroma_b, 0x00000409); out_be32(&vr->alpha, 0x000000ff); out_be32(&vr->req_alarm, 0x00000090); dprintk(1, "status reg: 0x%08x, field base: 0x%08x\n", in_be32(&vr->status_cfg), in_be32(&vr->field_base_addr)); } static void viu_overlay_intr(struct viu_dev *dev, u32 status) { struct viu_reg __iomem *vr = dev->vr; if (status & INT_DMA_END_STATUS) dev->dma_done = 1; if (status & INT_FIELD_STATUS) { if (dev->dma_done) { u32 addr = reg_val.field_base_addr; dev->dma_done = 0; if (status & FIELD_NO) addr += reg_val.dma_inc; out_be32(&vr->field_base_addr, addr); out_be32(&vr->dma_inc, reg_val.dma_inc); out_be32(&vr->status_cfg, (status & 0xffc0ffff) | (status & INT_ALL_STATUS) | reg_val.status_cfg); } else if (status & INT_VSYNC_STATUS) { out_be32(&vr->status_cfg, (status & 0xffc0ffff) | (status & INT_ALL_STATUS) | reg_val.status_cfg); } } } static void viu_capture_intr(struct viu_dev *dev, u32 status) { struct viu_dmaqueue *vidq = &dev->vidq; struct viu_reg __iomem *vr = dev->vr; struct viu_buf *buf; int field_num; int need_two; int dma_done = 0; field_num = status & FIELD_NO; need_two = V4L2_FIELD_HAS_BOTH(dev->capfield); if (status & INT_DMA_END_STATUS) { dma_done = 1; if (((field_num == 0) && (dev->field == 0)) || (field_num && (dev->field == 1))) dev->field++; } if (status & INT_FIELD_STATUS) { dprintk(1, "irq: field %d, done %d\n", !!field_num, dma_done); if (unlikely(dev->first)) { if (field_num == 0) { dev->first = 0; dprintk(1, "activate first buf\n"); viu_activate_next_buf(dev, vidq); } else dprintk(1, "wait field 0\n"); return; } /* setup buffer address for next dma operation */ if (!list_empty(&vidq->active)) { u32 addr = reg_val.field_base_addr; if (field_num && need_two) { addr += reg_val.dma_inc; dprintk(1, "field 1, 0x%lx, dev field %d\n", (unsigned long)addr, dev->field); } out_be32(&vr->field_base_addr, addr); out_be32(&vr->dma_inc, reg_val.dma_inc); out_be32(&vr->status_cfg, (status & 0xffc0ffff) | (status & INT_ALL_STATUS) | reg_val.status_cfg); return; } } if (dma_done && field_num && (dev->field == 2)) { dev->field = 0; buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); dprintk(1, "viu/0: [%p/%d] 0x%lx/0x%lx: dma complete\n", buf, buf->vb.i, (unsigned long)videobuf_to_dma_contig(&buf->vb), (unsigned long)in_be32(&vr->field_base_addr)); if (waitqueue_active(&buf->vb.done)) { list_del(&buf->vb.queue); buf->vb.ts = ktime_get_ns(); buf->vb.state = VIDEOBUF_DONE; buf->vb.field_count++; wake_up(&buf->vb.done); } /* activate next dma buffer */ viu_activate_next_buf(dev, vidq); } } static irqreturn_t viu_intr(int irq, void *dev_id) { struct viu_dev *dev = (struct viu_dev *)dev_id; struct viu_reg __iomem *vr = dev->vr; u32 status; u32 error; status = in_be32(&vr->status_cfg); if (status & INT_ERROR_STATUS) { dev->irqs.error_irq++; error = status & ERR_MASK; if (error) dprintk(1, "Err: error(%d), times:%d!\n", error >> 4, dev->irqs.error_irq); /* Clear interrupt error bit and error flags */ out_be32(&vr->status_cfg, (status & 0xffc0ffff) | INT_ERROR_STATUS); } if (status & INT_DMA_END_STATUS) { dev->irqs.dma_end_irq++; dev->dma_done = 1; dprintk(2, "VIU DMA end interrupt times: %d\n", dev->irqs.dma_end_irq); } if (status & INT_HSYNC_STATUS) dev->irqs.hsync_irq++; if (status & INT_FIELD_STATUS) { dev->irqs.field_irq++; dprintk(2, "VIU field interrupt times: %d\n", dev->irqs.field_irq); } if (status & INT_VSTART_STATUS) dev->irqs.vstart_irq++; if (status & INT_VSYNC_STATUS) { dev->irqs.vsync_irq++; dprintk(2, "VIU vsync interrupt times: %d\n", dev->irqs.vsync_irq); } /* clear all pending irqs */ status = in_be32(&vr->status_cfg); out_be32(&vr->status_cfg, (status & 0xffc0ffff) | (status & INT_ALL_STATUS)); if (dev->ovenable) { viu_overlay_intr(dev, status); return IRQ_HANDLED; } /* Capture mode */ viu_capture_intr(dev, status); return IRQ_HANDLED; } /* * File operations for the device */ static int viu_open(struct file *file) { struct video_device *vdev = video_devdata(file); struct viu_dev *dev = video_get_drvdata(vdev); struct viu_fh *fh; struct viu_reg __iomem *vr; int minor = vdev->minor; u32 status_cfg; dprintk(1, "viu: open (minor=%d)\n", minor); dev->users++; if (dev->users > 1) { dev->users--; return -EBUSY; } vr = dev->vr; dprintk(1, "open minor=%d type=%s users=%d\n", minor, v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); if (mutex_lock_interruptible(&dev->lock)) { dev->users--; return -ERESTARTSYS; } /* allocate and initialize per filehandle data */ fh = kzalloc(sizeof(*fh), GFP_KERNEL); if (!fh) { dev->users--; mutex_unlock(&dev->lock); return -ENOMEM; } v4l2_fh_init(&fh->fh, vdev); file->private_data = fh; fh->dev = dev; fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; fh->fmt = format_by_fourcc(V4L2_PIX_FMT_RGB32); fh->width = norm_maxw(); fh->height = norm_maxh(); dev->crop_current.width = fh->width; dev->crop_current.height = fh->height; dprintk(1, "Open: fh=%p, dev=%p, dev->vidq=%p\n", fh, dev, &dev->vidq); dprintk(1, "Open: list_empty queued=%d\n", list_empty(&dev->vidq.queued)); dprintk(1, "Open: list_empty active=%d\n", list_empty(&dev->vidq.active)); viu_default_settings(vr); status_cfg = in_be32(&vr->status_cfg); out_be32(&vr->status_cfg, status_cfg & ~(INT_VSYNC_EN | INT_HSYNC_EN | INT_FIELD_EN | INT_VSTART_EN | INT_DMA_END_EN | INT_ERROR_EN | INT_ECC_EN)); status_cfg = in_be32(&vr->status_cfg); out_be32(&vr->status_cfg, status_cfg | INT_ALL_STATUS); spin_lock_init(&fh->vbq_lock); videobuf_queue_dma_contig_init(&fh->vb_vidq, &viu_video_qops, dev->dev, &fh->vbq_lock, fh->type, V4L2_FIELD_INTERLACED, sizeof(struct viu_buf), fh, &fh->dev->lock); v4l2_fh_add(&fh->fh); mutex_unlock(&dev->lock); return 0; } static ssize_t viu_read(struct file *file, char __user *data, size_t count, loff_t *ppos) { struct viu_fh *fh = file->private_data; struct viu_dev *dev = fh->dev; int ret = 0; dprintk(2, "%s\n", __func__); if (dev->ovenable) dev->ovenable = 0; if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { if (mutex_lock_interruptible(&dev->lock)) return -ERESTARTSYS; viu_start_dma(dev); ret = videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, file->f_flags & O_NONBLOCK); mutex_unlock(&dev->lock); return ret; } return 0; } static __poll_t viu_poll(struct file *file, struct poll_table_struct *wait) { struct viu_fh *fh = file->private_data; struct videobuf_queue *q = &fh->vb_vidq; struct viu_dev *dev = fh->dev; __poll_t req_events = poll_requested_events(wait); __poll_t res = v4l2_ctrl_poll(file, wait); if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) return EPOLLERR; if (!(req_events & (EPOLLIN | EPOLLRDNORM))) return res; mutex_lock(&dev->lock); res |= videobuf_poll_stream(file, q, wait); mutex_unlock(&dev->lock); return res; } static int viu_release(struct file *file) { struct viu_fh *fh = file->private_data; struct viu_dev *dev = fh->dev; int minor = video_devdata(file)->minor; mutex_lock(&dev->lock); viu_stop_dma(dev); videobuf_stop(&fh->vb_vidq); videobuf_mmap_free(&fh->vb_vidq); v4l2_fh_del(&fh->fh); v4l2_fh_exit(&fh->fh); mutex_unlock(&dev->lock); kfree(fh); dev->users--; dprintk(1, "close (minor=%d, users=%d)\n", minor, dev->users); return 0; } static void viu_reset(struct viu_reg __iomem *reg) { out_be32(®->status_cfg, 0); out_be32(®->luminance, 0x9512a254); out_be32(®->chroma_r, 0x03310000); out_be32(®->chroma_g, 0x06600f38); out_be32(®->chroma_b, 0x00000409); out_be32(®->field_base_addr, 0); out_be32(®->dma_inc, 0); out_be32(®->picture_count, 0x01e002d0); out_be32(®->req_alarm, 0x00000090); out_be32(®->alpha, 0x000000ff); } static int viu_mmap(struct file *file, struct vm_area_struct *vma) { struct viu_fh *fh = file->private_data; struct viu_dev *dev = fh->dev; int ret; dprintk(1, "mmap called, vma=%p\n", vma); if (mutex_lock_interruptible(&dev->lock)) return -ERESTARTSYS; ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); mutex_unlock(&dev->lock); dprintk(1, "vma start=0x%08lx, size=%ld, ret=%d\n", (unsigned long)vma->vm_start, (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, ret); return ret; } static const struct v4l2_file_operations viu_fops = { .owner = THIS_MODULE, .open = viu_open, .release = viu_release, .read = viu_read, .poll = viu_poll, .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ .mmap = viu_mmap, }; static const struct v4l2_ioctl_ops viu_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_cap, .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt, .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_overlay, .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_overlay, .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_overlay, .vidioc_overlay = vidioc_overlay, .vidioc_g_fbuf = vidioc_g_fbuf, .vidioc_s_fbuf = vidioc_s_fbuf, .vidioc_reqbufs = vidioc_reqbufs, .vidioc_querybuf = vidioc_querybuf, .vidioc_qbuf = vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_g_std = vidioc_g_std, .vidioc_s_std = vidioc_s_std, .vidioc_querystd = vidioc_querystd, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_log_status = v4l2_ctrl_log_status, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static const struct video_device viu_template = { .name = "FSL viu", .fops = &viu_fops, .minor = -1, .ioctl_ops = &viu_ioctl_ops, .release = video_device_release, .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL, }; static int viu_of_probe(struct platform_device *op) { struct viu_dev *viu_dev; struct video_device *vdev; struct resource r; struct viu_reg __iomem *viu_regs; struct i2c_adapter *ad; int ret, viu_irq; struct clk *clk; ret = of_address_to_resource(op->dev.of_node, 0, &r); if (ret) { dev_err(&op->dev, "Can't parse device node resource\n"); return -ENODEV; } viu_irq = irq_of_parse_and_map(op->dev.of_node, 0); if (!viu_irq) { dev_err(&op->dev, "Error while mapping the irq\n"); return -EINVAL; } /* request mem region */ if (!devm_request_mem_region(&op->dev, r.start, sizeof(struct viu_reg), DRV_NAME)) { dev_err(&op->dev, "Error while requesting mem region\n"); ret = -EBUSY; goto err_irq; } /* remap registers */ viu_regs = devm_ioremap(&op->dev, r.start, sizeof(struct viu_reg)); if (!viu_regs) { dev_err(&op->dev, "Can't map register set\n"); ret = -ENOMEM; goto err_irq; } /* Prepare our private structure */ viu_dev = devm_kzalloc(&op->dev, sizeof(struct viu_dev), GFP_ATOMIC); if (!viu_dev) { dev_err(&op->dev, "Can't allocate private structure\n"); ret = -ENOMEM; goto err_irq; } viu_dev->vr = viu_regs; viu_dev->irq = viu_irq; viu_dev->dev = &op->dev; /* init video dma queues */ INIT_LIST_HEAD(&viu_dev->vidq.active); INIT_LIST_HEAD(&viu_dev->vidq.queued); snprintf(viu_dev->v4l2_dev.name, sizeof(viu_dev->v4l2_dev.name), "%s", "VIU"); ret = v4l2_device_register(viu_dev->dev, &viu_dev->v4l2_dev); if (ret < 0) { dev_err(&op->dev, "v4l2_device_register() failed: %d\n", ret); goto err_irq; } ad = i2c_get_adapter(0); if (!ad) { ret = -EFAULT; dev_err(&op->dev, "couldn't get i2c adapter\n"); goto err_v4l2; } v4l2_ctrl_handler_init(&viu_dev->hdl, 5); if (viu_dev->hdl.error) { ret = viu_dev->hdl.error; dev_err(&op->dev, "couldn't register control\n"); goto err_i2c; } /* This control handler will inherit the control(s) from the sub-device(s). */ viu_dev->v4l2_dev.ctrl_handler = &viu_dev->hdl; viu_dev->decoder = v4l2_i2c_new_subdev(&viu_dev->v4l2_dev, ad, "saa7113", VIU_VIDEO_DECODER_ADDR, NULL); timer_setup(&viu_dev->vidq.timeout, viu_vid_timeout, 0); viu_dev->std = V4L2_STD_NTSC_M; viu_dev->first = 1; /* Allocate memory for video device */ vdev = video_device_alloc(); if (vdev == NULL) { ret = -ENOMEM; goto err_hdl; } *vdev = viu_template; vdev->v4l2_dev = &viu_dev->v4l2_dev; viu_dev->vdev = vdev; /* initialize locks */ mutex_init(&viu_dev->lock); viu_dev->vdev->lock = &viu_dev->lock; spin_lock_init(&viu_dev->slock); video_set_drvdata(viu_dev->vdev, viu_dev); mutex_lock(&viu_dev->lock); ret = video_register_device(viu_dev->vdev, VFL_TYPE_GRABBER, -1); if (ret < 0) { video_device_release(viu_dev->vdev); goto err_unlock; } /* enable VIU clock */ clk = devm_clk_get(&op->dev, "ipg"); if (IS_ERR(clk)) { dev_err(&op->dev, "failed to lookup the clock!\n"); ret = PTR_ERR(clk); goto err_vdev; } ret = clk_prepare_enable(clk); if (ret) { dev_err(&op->dev, "failed to enable the clock!\n"); goto err_vdev; } viu_dev->clk = clk; /* reset VIU module */ viu_reset(viu_dev->vr); /* install interrupt handler */ if (request_irq(viu_dev->irq, viu_intr, 0, "viu", (void *)viu_dev)) { dev_err(&op->dev, "Request VIU IRQ failed.\n"); ret = -ENODEV; goto err_clk; } mutex_unlock(&viu_dev->lock); dev_info(&op->dev, "Freescale VIU Video Capture Board\n"); return ret; err_clk: clk_disable_unprepare(viu_dev->clk); err_vdev: video_unregister_device(viu_dev->vdev); err_unlock: mutex_unlock(&viu_dev->lock); err_hdl: v4l2_ctrl_handler_free(&viu_dev->hdl); err_i2c: i2c_put_adapter(ad); err_v4l2: v4l2_device_unregister(&viu_dev->v4l2_dev); err_irq: irq_dispose_mapping(viu_irq); return ret; } static int viu_of_remove(struct platform_device *op) { struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); struct v4l2_subdev *sdev = list_entry(v4l2_dev->subdevs.next, struct v4l2_subdev, list); struct i2c_client *client = v4l2_get_subdevdata(sdev); free_irq(dev->irq, (void *)dev); irq_dispose_mapping(dev->irq); clk_disable_unprepare(dev->clk); v4l2_ctrl_handler_free(&dev->hdl); video_unregister_device(dev->vdev); i2c_put_adapter(client->adapter); v4l2_device_unregister(&dev->v4l2_dev); return 0; } #ifdef CONFIG_PM static int viu_suspend(struct platform_device *op, pm_message_t state) { struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); clk_disable(dev->clk); return 0; } static int viu_resume(struct platform_device *op) { struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); clk_enable(dev->clk); return 0; } #endif /* * Initialization and module stuff */ static const struct of_device_id mpc512x_viu_of_match[] = { { .compatible = "fsl,mpc5121-viu", }, {}, }; MODULE_DEVICE_TABLE(of, mpc512x_viu_of_match); static struct platform_driver viu_of_platform_driver = { .probe = viu_of_probe, .remove = viu_of_remove, #ifdef CONFIG_PM .suspend = viu_suspend, .resume = viu_resume, #endif .driver = { .name = DRV_NAME, .of_match_table = mpc512x_viu_of_match, }, }; module_platform_driver(viu_of_platform_driver); MODULE_DESCRIPTION("Freescale Video-In(VIU)"); MODULE_AUTHOR("Hongjun Chen"); MODULE_LICENSE("GPL"); MODULE_VERSION(VIU_VERSION);
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