diff options
Diffstat (limited to 'drivers/media/video/fsl-viu.c')
| -rw-r--r-- | drivers/media/video/fsl-viu.c | 1673 |
1 files changed, 0 insertions, 1673 deletions
diff --git a/drivers/media/video/fsl-viu.c b/drivers/media/video/fsl-viu.c deleted file mode 100644 index 777486f7cadb..000000000000 --- a/drivers/media/video/fsl-viu.c +++ /dev/null @@ -1,1673 +0,0 @@ -/* - * 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> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ - -#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_platform.h> -#include <linux/slab.h> -#include <media/v4l2-common.h> -#include <media/v4l2-device.h> -#include <media/v4l2-ioctl.h> -#include <media/videobuf-dma-contig.h> - -#define DRV_NAME "fsl_viu" -#define VIU_VERSION "0.5.1" - -#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 - -/* supported controls */ -static struct v4l2_queryctrl viu_qctrl[] = { - { - .id = V4L2_CID_BRIGHTNESS, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Brightness", - .minimum = 0, - .maximum = 255, - .step = 1, - .default_value = 127, - .flags = 0, - }, { - .id = V4L2_CID_CONTRAST, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Contrast", - .minimum = 0, - .maximum = 255, - .step = 0x1, - .default_value = 0x10, - .flags = 0, - }, { - .id = V4L2_CID_SATURATION, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Saturation", - .minimum = 0, - .maximum = 255, - .step = 0x1, - .default_value = 127, - .flags = 0, - }, { - .id = V4L2_CID_HUE, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Hue", - .minimum = -128, - .maximum = 127, - .step = 0x1, - .default_value = 0, - .flags = 0, - } -}; - -static int qctl_regs[ARRAY_SIZE(viu_qctrl)]; - -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 { - char name[32]; - u32 fourcc; /* v4l2 format id */ - u32 pixelformat; - int depth; -}; - -static struct viu_fmt formats[] = { - { - .name = "RGB-16 (5/B-6/G-5/R)", - .fourcc = V4L2_PIX_FMT_RGB565, - .pixelformat = V4L2_PIX_FMT_RGB565, - .depth = 16, - }, { - .name = "RGB-32 (A-R-G-B)", - .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 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 *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 { - 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); - -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; -} - -void viu_start_dma(struct viu_dev *dev) -{ - struct viu_reg *vr = dev->vr; - - dev->field = 0; - - /* Enable DMA operation */ - out_be32(&vr->status_cfg, SOFT_RST); - out_be32(&vr->status_cfg, INT_FIELD_EN); -} - -void viu_stop_dma(struct viu_dev *dev) -{ - struct viu_reg *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=0x%08lx\n", __func__, (unsigned long)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_del(&buf->vb.queue); - list_add_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_del(&buf->vb.queue); - list_add_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(unsigned long data) -{ - struct viu_dev *dev = (struct viu_dev *)data; - 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 *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=0x%08lx\n", - (unsigned long)&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=0x%08lx\n", - (unsigned long)&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=0x%08lx\n", - (unsigned long)&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 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) -{ - strcpy(cap->driver, "viu"); - strcpy(cap->card, "viu"); - cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_STREAMING | - V4L2_CAP_VIDEO_OVERLAY | - V4L2_CAP_READWRITE; - 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; - - strlcpy(f->description, formats[index].name, sizeof(f->description)); - 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; - return 0; -} - -static int vidioc_try_fmt_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct viu_fmt *fmt; - enum v4l2_field field; - 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; - } - - field = f->fmt.pix.field; - - if (field == V4L2_FIELD_ANY) { - field = V4L2_FIELD_INTERLACED; - } else if (field != V4L2_FIELD_INTERLACED) { - dprintk(1, "Field type invalid.\n"); - return -EINVAL; - } - - maxw = norm_maxw(); - maxh = norm_maxh(); - - f->fmt.pix.field = field; - 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; - - 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; - dprintk(1, "set to pixelformat '%4.6s'\n", (char *)&fh->fmt->name); - 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 *viu_reg) -{ - struct viu_reg *vr = viu_reg; - - 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 %s\n", __func__, - fh->win.w.width, fh->win.w.height, dev->ovfmt->name); - - 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)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; -} - -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; -} - -int vidioc_s_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; - 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, core, 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; - strcpy(inp->name, "Camera"); - 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 > 1) - return -EINVAL; - - decoder_call(fh->dev, video, s_routing, i, 0, 0); - return 0; -} - -/* Controls */ -static int vidioc_queryctrl(struct file *file, void *priv, - struct v4l2_queryctrl *qc) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { - if (qc->id && qc->id == viu_qctrl[i].id) { - memcpy(qc, &(viu_qctrl[i]), sizeof(*qc)); - return 0; - } - } - return -EINVAL; -} - -static int vidioc_g_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { - if (ctrl->id == viu_qctrl[i].id) { - ctrl->value = qctl_regs[i]; - return 0; - } - } - return -EINVAL; -} -static int vidioc_s_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { - if (ctrl->id == viu_qctrl[i].id) { - if (ctrl->value < viu_qctrl[i].minimum - || ctrl->value > viu_qctrl[i].maximum) - return -ERANGE; - qctl_regs[i] = ctrl->value; - return 0; - } - } - return -EINVAL; -} - -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 *viu_reg) -{ - struct viu_reg *vr = viu_reg; - - 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 *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 *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); - do_gettimeofday(&buf->vb.ts); - 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 *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 *vr; - int minor = vdev->minor; - u32 status_cfg; - int i; - - 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); - - /* allocate and initialize per filehandle data */ - fh = kzalloc(sizeof(*fh), GFP_KERNEL); - if (!fh) { - dev->users--; - return -ENOMEM; - } - - 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; - - /* Put all controls at a sane state */ - for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) - qctl_regs[i] = viu_qctrl[i].default_value; - - dprintk(1, "Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n", - (unsigned long)fh, (unsigned long)dev, - (unsigned long)&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); - 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) { - viu_start_dma(dev); - ret = videobuf_read_stream(&fh->vb_vidq, data, count, - ppos, 0, file->f_flags & O_NONBLOCK); - return ret; - } - return 0; -} - -static unsigned int viu_poll(struct file *file, struct poll_table_struct *wait) -{ - struct viu_fh *fh = file->private_data; - struct videobuf_queue *q = &fh->vb_vidq; - - if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) - return POLLERR; - - return videobuf_poll_stream(file, q, wait); -} - -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; - - viu_stop_dma(dev); - videobuf_stop(&fh->vb_vidq); - videobuf_mmap_free(&fh->vb_vidq); - - kfree(fh); - - dev->users--; - dprintk(1, "close (minor=%d, users=%d)\n", - minor, dev->users); - return 0; -} - -void viu_reset(struct viu_reg *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; - int ret; - - dprintk(1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); - - ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); - - 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 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_queryctrl = vidioc_queryctrl, - .vidioc_g_ctrl = vidioc_g_ctrl, - .vidioc_s_ctrl = vidioc_s_ctrl, - .vidioc_streamon = vidioc_streamon, - .vidioc_streamoff = vidioc_streamoff, -}; - -static 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, - .current_norm = V4L2_STD_NTSC_M, -}; - -static int __devinit 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; - - 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 == NO_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; - } - - /* 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; - } - - /* 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; - } - - 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; - } - - ad = i2c_get_adapter(0); - viu_dev->decoder = v4l2_i2c_new_subdev(&viu_dev->v4l2_dev, ad, - "saa7113", VIU_VIDEO_DECODER_ADDR, NULL); - - viu_dev->vidq.timeout.function = viu_vid_timeout; - viu_dev->vidq.timeout.data = (unsigned long)viu_dev; - init_timer(&viu_dev->vidq.timeout); - viu_dev->first = 1; - - /* Allocate memory for video device */ - vdev = video_device_alloc(); - if (vdev == NULL) { - ret = -ENOMEM; - goto err_vdev; - } - - memcpy(vdev, &viu_template, sizeof(viu_template)); - - vdev->v4l2_dev = &viu_dev->v4l2_dev; - - viu_dev->vdev = vdev; - - /* initialize locks */ - mutex_init(&viu_dev->lock); - /* Locking in file operations other than ioctl should be done - by the driver, not the V4L2 core. - This driver needs auditing so that this flag can be removed. */ - set_bit(V4L2_FL_LOCK_ALL_FOPS, &viu_dev->vdev->flags); - 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_vdev; - } - - /* enable VIU clock */ - viu_dev->clk = clk_get(&op->dev, "viu_clk"); - if (IS_ERR(viu_dev->clk)) { - dev_err(&op->dev, "failed to find the clock module!\n"); - ret = -ENODEV; - goto err_clk; - } else { - clk_enable(viu_dev->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_irq; - } - - mutex_unlock(&viu_dev->lock); - - dev_info(&op->dev, "Freescale VIU Video Capture Board\n"); - return ret; - -err_irq: - clk_disable(viu_dev->clk); - clk_put(viu_dev->clk); -err_clk: - video_unregister_device(viu_dev->vdev); -err_vdev: - mutex_unlock(&viu_dev->lock); - i2c_put_adapter(ad); - v4l2_device_unregister(&viu_dev->v4l2_dev); -err: - irq_dispose_mapping(viu_irq); - return ret; -} - -static int __devexit 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(dev->clk); - clk_put(dev->clk); - - 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 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 = __devexit_p(viu_of_remove), -#ifdef CONFIG_PM - .suspend = viu_suspend, - .resume = viu_resume, -#endif - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - .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); |