[net-next-2.6.git] / drivers / staging / cx25821 / cx25821-video2.c

/*
 *  Driver for the Conexant CX25821 PCIe bridge
 *
 *  Copyright (C) 2009 Conexant Systems Inc.
 *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
 *  Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "cx25821-video.h"

static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
	struct cx25821_buffer *buf =
	    container_of(vb, struct cx25821_buffer, vb);
	struct cx25821_buffer *prev;
	struct cx25821_fh *fh = vq->priv_data;
	struct cx25821_dev *dev = fh->dev;
	struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH02];

	/* add jump to stopper */
	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
	buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
	buf->risc.jmp[2] = cpu_to_le32(0);	/* bits 63-32 */

	dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);

	if (!list_empty(&q->queued)) {
		list_add_tail(&buf->vb.queue, &q->queued);
		buf->vb.state = VIDEOBUF_QUEUED;
		dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
			buf->vb.i);

	} else if (list_empty(&q->active)) {
		list_add_tail(&buf->vb.queue, &q->active);
		cx25821_start_video_dma(dev, q, buf,
					&dev->sram_channels[SRAM_CH02]);
		buf->vb.state = VIDEOBUF_ACTIVE;
		buf->count = q->count++;
		mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
		dprintk(2,
			"[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
			buf, buf->vb.i, buf->count, q->count);
	} else {
		prev =
		    list_entry(q->active.prev, struct cx25821_buffer, 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, &q->active);
			buf->vb.state = VIDEOBUF_ACTIVE;
			buf->count = q->count++;
			prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);

			/* 64 bit bits 63-32 */
			prev->risc.jmp[2] = cpu_to_le32(0);
			dprintk(2,
				"[%p/%d] buffer_queue - append to active, buf->count=%d\n",
				buf, buf->vb.i, buf->count);

		} else {
			list_add_tail(&buf->vb.queue, &q->queued);
			buf->vb.state = VIDEOBUF_QUEUED;
			dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
				buf->vb.i);
		}
	}

	if (list_empty(&q->active)) {
		dprintk(2, "active queue empty!\n");
	}
}

static struct videobuf_queue_ops cx25821_video_qops = {
	.buf_setup = cx25821_buffer_setup,
	.buf_prepare = cx25821_buffer_prepare,
	.buf_queue = buffer_queue,
	.buf_release = cx25821_buffer_release,
};

static int video_open(struct file *file)
{
	struct video_device *vdev = video_devdata(file);
	struct cx25821_dev *dev = video_drvdata(file);
	struct cx25821_fh *fh;
	enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	u32 pix_format;

	printk("open dev=%s type=%s\n", video_device_node_name(vdev),
		v4l2_type_names[type]);

	/* allocate + initialize per filehandle data */
	fh = kzalloc(sizeof(*fh), GFP_KERNEL);
	if (NULL == fh)
		return -ENOMEM;

	lock_kernel();

	file->private_data = fh;
	fh->dev = dev;
	fh->type = type;
	fh->width = 720;

	if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
		fh->height = 576;
	else
		fh->height = 480;

	dev->channel_opened = SRAM_CH02;
	pix_format =
	    (dev->pixel_formats[dev->channel_opened] ==
	     PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV;
	fh->fmt = format_by_fourcc(pix_format);

	v4l2_prio_open(&dev->prio, &fh->prio);

	videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
			       &dev->pci->dev, &dev->slock,
			       V4L2_BUF_TYPE_VIDEO_CAPTURE,
			       V4L2_FIELD_INTERLACED,
			       sizeof(struct cx25821_buffer), fh);

	dprintk(1, "post videobuf_queue_init()\n");
	unlock_kernel();

	return 0;
}

static ssize_t video_read(struct file *file, char __user * data, size_t count,
			  loff_t * ppos)
{
	struct cx25821_fh *fh = file->private_data;

	switch (fh->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		if (cx25821_res_locked(fh->dev, RESOURCE_VIDEO2))
			return -EBUSY;

		return videobuf_read_one(&fh->vidq, data, count, ppos,
					 file->f_flags & O_NONBLOCK);

	default:
		BUG();
		return 0;
	}
}

static unsigned int video_poll(struct file *file,
			       struct poll_table_struct *wait)
{
	struct cx25821_fh *fh = file->private_data;
	struct cx25821_buffer *buf;

	if (cx25821_res_check(fh, RESOURCE_VIDEO2)) {
		/* streaming capture */
		if (list_empty(&fh->vidq.stream))
			return POLLERR;
		buf = list_entry(fh->vidq.stream.next,
				 struct cx25821_buffer, vb.stream);
	} else {
		/* read() capture */
		buf = (struct cx25821_buffer *)fh->vidq.read_buf;
		if (NULL == buf)
			return POLLERR;
	}

	poll_wait(file, &buf->vb.done, wait);
	if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) {
		if (buf->vb.state == VIDEOBUF_DONE) {
			struct cx25821_dev *dev = fh->dev;

			if (dev && dev->use_cif_resolution[SRAM_CH02]) {
				u8 cam_id = *((char *)buf->vb.baddr + 3);
				memcpy((char *)buf->vb.baddr,
				       (char *)buf->vb.baddr + (fh->width * 2),
				       (fh->width * 2));
				*((char *)buf->vb.baddr + 3) = cam_id;
			}
		}

		return POLLIN | POLLRDNORM;
	}

	return 0;
}

static int video_release(struct file *file)
{
	struct cx25821_fh *fh = file->private_data;
	struct cx25821_dev *dev = fh->dev;

	//stop the risc engine and fifo
	cx_write(channel2->dma_ctl, 0);	/* FIFO and RISC disable */

	/* stop video capture */
	if (cx25821_res_check(fh, RESOURCE_VIDEO2)) {
		videobuf_queue_cancel(&fh->vidq);
		cx25821_res_free(dev, fh, RESOURCE_VIDEO2);
	}

	if (fh->vidq.read_buf) {
		cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf);
		kfree(fh->vidq.read_buf);
	}

	videobuf_mmap_free(&fh->vidq);

	v4l2_prio_close(&dev->prio, &fh->prio);
	file->private_data = NULL;
	kfree(fh);

	return 0;
}

static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
	struct cx25821_fh *fh = priv;
	struct cx25821_dev *dev = fh->dev;

	if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
		return -EINVAL;
	}

	if (unlikely(i != fh->type)) {
		return -EINVAL;
	}

	if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh, RESOURCE_VIDEO2)))) {
		return -EBUSY;
	}

	return videobuf_streamon(get_queue(fh));
}

static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
	struct cx25821_fh *fh = priv;
	struct cx25821_dev *dev = fh->dev;
	int err, res;

	if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;
	if (i != fh->type)
		return -EINVAL;

	res = cx25821_get_resource(fh, RESOURCE_VIDEO2);
	err = videobuf_streamoff(get_queue(fh));
	if (err < 0)
		return err;
	cx25821_res_free(dev, fh, res);
	return 0;
}

static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
				struct v4l2_format *f)
{
	struct cx25821_fh *fh = priv;
	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
	int err;
	int pix_format = 0;

	if (fh) {
		err = v4l2_prio_check(&dev->prio, &fh->prio);
		if (0 != err)
			return err;
	}

	dprintk(2, "%s()\n", __func__);
	err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);

	if (0 != err)
		return err;

	fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
	fh->vidq.field = f->fmt.pix.field;

	// check if width and height is valid based on set standard
	if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm)) {
		fh->width = f->fmt.pix.width;
	}

	if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm)) {
		fh->height = f->fmt.pix.height;
	}

	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
		pix_format = PIXEL_FRMT_411;
	else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
		pix_format = PIXEL_FRMT_422;
	else
		return -EINVAL;

	cx25821_set_pixel_format(dev, SRAM_CH02, pix_format);

	// check if cif resolution
	if (fh->width == 320 || fh->width == 352) {
		dev->use_cif_resolution[SRAM_CH02] = 1;
	} else {
		dev->use_cif_resolution[SRAM_CH02] = 0;
	}
	dev->cif_width[SRAM_CH02] = fh->width;
	medusa_set_resolution(dev, fh->width, SRAM_CH02);

	dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
		fh->height, fh->vidq.field);
	cx25821_call_all(dev, video, s_fmt, f);

	return 0;
}

static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
	int ret_val = 0;
	struct cx25821_fh *fh = priv;
	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;

	ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);

	p->sequence = dev->vidq[SRAM_CH02].count;

	return ret_val;
}

static int vidioc_log_status(struct file *file, void *priv)
{
	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
	char name[32 + 2];

	struct sram_channel *sram_ch = &dev->sram_channels[SRAM_CH02];
	u32 tmp = 0;

	snprintf(name, sizeof(name), "%s/2", dev->name);
	printk(KERN_INFO "%s/2: ============  START LOG STATUS  ============\n",
	       dev->name);

	cx25821_call_all(dev, core, log_status);

	tmp = cx_read(sram_ch->dma_ctl);
	printk(KERN_INFO "Video input 2 is %s\n",
	       (tmp & 0x11) ? "streaming" : "stopped");
	printk(KERN_INFO "%s/2: =============  END LOG STATUS  =============\n",
	       dev->name);
	return 0;
}

static int vidioc_s_ctrl(struct file *file, void *priv,
			 struct v4l2_control *ctl)
{
	struct cx25821_fh *fh = priv;
	struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
	int err;

	if (fh) {
		err = v4l2_prio_check(&dev->prio, &fh->prio);
		if (0 != err)
			return err;
	}

	return cx25821_set_control(dev, ctl, SRAM_CH02);
}

// exported stuff
static const struct v4l2_file_operations video_fops = {
	.owner = THIS_MODULE,
	.open = video_open,
	.release = video_release,
	.read = video_read,
	.poll = video_poll,
	.mmap = cx25821_video_mmap,
	.ioctl = video_ioctl2,
};

static const struct v4l2_ioctl_ops video_ioctl_ops = {
	.vidioc_querycap = cx25821_vidioc_querycap,
	.vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
	.vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
	.vidioc_reqbufs = cx25821_vidioc_reqbufs,
	.vidioc_querybuf = cx25821_vidioc_querybuf,
	.vidioc_qbuf = cx25821_vidioc_qbuf,
	.vidioc_dqbuf = vidioc_dqbuf,
#ifdef TUNER_FLAG
	.vidioc_s_std = cx25821_vidioc_s_std,
	.vidioc_querystd = cx25821_vidioc_querystd,
#endif
	.vidioc_cropcap = cx25821_vidioc_cropcap,
	.vidioc_s_crop = cx25821_vidioc_s_crop,
	.vidioc_g_crop = cx25821_vidioc_g_crop,
	.vidioc_enum_input = cx25821_vidioc_enum_input,
	.vidioc_g_input = cx25821_vidioc_g_input,
	.vidioc_s_input = cx25821_vidioc_s_input,
	.vidioc_g_ctrl = cx25821_vidioc_g_ctrl,
	.vidioc_s_ctrl = vidioc_s_ctrl,
	.vidioc_queryctrl = cx25821_vidioc_queryctrl,
	.vidioc_streamon = vidioc_streamon,
	.vidioc_streamoff = vidioc_streamoff,
	.vidioc_log_status = vidioc_log_status,
	.vidioc_g_priority = cx25821_vidioc_g_priority,
	.vidioc_s_priority = cx25821_vidioc_s_priority,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	.vidiocgmbuf = cx25821_vidiocgmbuf,
#endif
#ifdef TUNER_FLAG
	.vidioc_g_tuner = cx25821_vidioc_g_tuner,
	.vidioc_s_tuner = cx25821_vidioc_s_tuner,
	.vidioc_g_frequency = cx25821_vidioc_g_frequency,
	.vidioc_s_frequency = cx25821_vidioc_s_frequency,
#endif
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.vidioc_g_register = cx25821_vidioc_g_register,
	.vidioc_s_register = cx25821_vidioc_s_register,
#endif
};

struct video_device cx25821_video_template2 = {
	.name = "cx25821-video",
	.fops = &video_fops,
	.ioctl_ops = &video_ioctl_ops,
	.tvnorms = CX25821_NORMS,
	.current_norm = V4L2_STD_NTSC_M,
};
Commit	Line	Data
02b20b0b MCC	1	/*
	2	* Driver for the Conexant CX25821 PCIe bridge
	3	*
bb4c9a74	4	* Copyright (C) 2009 Conexant Systems Inc.
02b20b0b MCC	5	* Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
	6	* Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	*
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	22	*/
	23
	24	#include "cx25821-video.h"
	25
02b20b0b MCC	26	static void buffer_queue(struct videobuf_queue vq, struct videobuf_buffer vb)
02b20b0b MCC	27	{
1a9fc855 MCC	28	struct cx25821_buffer *buf =
	29	container_of(vb, struct cx25821_buffer, vb);
	30	struct cx25821_buffer *prev;
	31	struct cx25821_fh *fh = vq->priv_data;
	32	struct cx25821_dev *dev = fh->dev;
	33	struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH02];
	34
	35	/* add jump to stopper */
	36	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP \| RISC_IRQ1 \| RISC_CNT_INC);
	37	buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
	38	buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
	39
	40	dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
	41
	42	if (!list_empty(&q->queued)) {
	43	list_add_tail(&buf->vb.queue, &q->queued);
	44	buf->vb.state = VIDEOBUF_QUEUED;
	45	dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
	46	buf->vb.i);
	47
	48	} else if (list_empty(&q->active)) {
	49	list_add_tail(&buf->vb.queue, &q->active);
	50	cx25821_start_video_dma(dev, q, buf,
	51	&dev->sram_channels[SRAM_CH02]);
	52	buf->vb.state = VIDEOBUF_ACTIVE;
	53	buf->count = q->count++;
	54	mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
	55	dprintk(2,
	56	"[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
	57	buf, buf->vb.i, buf->count, q->count);
bb4c9a74	58	} else {
1a9fc855 MCC	59	prev =
	60	list_entry(q->active.prev, struct cx25821_buffer, vb.queue);
	61	if (prev->vb.width == buf->vb.width
	62	&& prev->vb.height == buf->vb.height
	63	&& prev->fmt == buf->fmt) {
	64	list_add_tail(&buf->vb.queue, &q->active);
	65	buf->vb.state = VIDEOBUF_ACTIVE;
	66	buf->count = q->count++;
	67	prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
	68
	69	/* 64 bit bits 63-32 */
	70	prev->risc.jmp[2] = cpu_to_le32(0);
	71	dprintk(2,
	72	"[%p/%d] buffer_queue - append to active, buf->count=%d\n",
	73	buf, buf->vb.i, buf->count);
	74
	75	} else {
	76	list_add_tail(&buf->vb.queue, &q->queued);
	77	buf->vb.state = VIDEOBUF_QUEUED;
	78	dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
	79	buf->vb.i);
	80	}
bb4c9a74	81	}
02b20b0b	82
1a9fc855 MCC	83	if (list_empty(&q->active)) {
	84	dprintk(2, "active queue empty!\n");
	85	}
02b20b0b MCC	86	}
02b20b0b MCC	87
02b20b0b	88	static struct videobuf_queue_ops cx25821_video_qops = {
f2466d63 MCC	89	.buf_setup = cx25821_buffer_setup,
f2466d63 MCC	90	.buf_prepare = cx25821_buffer_prepare,
1a9fc855	91	.buf_queue = buffer_queue,
f2466d63	92	.buf_release = cx25821_buffer_release,
02b20b0b MCC	93	};
02b20b0b MCC	94
02b20b0b MCC	95	static int video_open(struct file *file)
02b20b0b MCC	96	{
50462eb0	97	struct video_device *vdev = video_devdata(file);
63b0d5ad	98	struct cx25821_dev *dev = video_drvdata(file);
1a9fc855	99	struct cx25821_fh *fh;
63b0d5ad	100	enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1a9fc855 MCC	101	u32 pix_format;
1a9fc855 MCC	102
50462eb0 LP	103	printk("open dev=%s type=%s\n", video_device_node_name(vdev),
50462eb0 LP	104	v4l2_type_names[type]);
02b20b0b	105
1a9fc855 MCC	106	/* allocate + initialize per filehandle data */
1a9fc855 MCC	107	fh = kzalloc(sizeof(*fh), GFP_KERNEL);
63b0d5ad	108	if (NULL == fh)
1a9fc855	109	return -ENOMEM;
63b0d5ad LP	110
	111	lock_kernel();
	112
1a9fc855 MCC	113	file->private_data = fh;
	114	fh->dev = dev;
	115	fh->type = type;
	116	fh->width = 720;
	117
	118	if (dev->tvnorm & V4L2_STD_PAL_BG \|\| dev->tvnorm & V4L2_STD_PAL_DK)
	119	fh->height = 576;
	120	else
	121	fh->height = 480;
	122
	123	dev->channel_opened = SRAM_CH02;
	124	pix_format =
	125	(dev->pixel_formats[dev->channel_opened] ==
	126	PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV;
	127	fh->fmt = format_by_fourcc(pix_format);
	128
	129	v4l2_prio_open(&dev->prio, &fh->prio);
	130
	131	videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
	132	&dev->pci->dev, &dev->slock,
	133	V4L2_BUF_TYPE_VIDEO_CAPTURE,
	134	V4L2_FIELD_INTERLACED,
	135	sizeof(struct cx25821_buffer), fh);
	136
	137	dprintk(1, "post videobuf_queue_init()\n");
bb4c9a74	138	unlock_kernel();
1a9fc855 MCC	139
1a9fc855 MCC	140	return 0;
02b20b0b MCC	141	}
02b20b0b MCC	142
1a9fc855 MCC	143	static ssize_t video_read(struct file file, char __user data, size_t count,
1a9fc855 MCC	144	loff_t * ppos)
02b20b0b	145	{
1a9fc855	146	struct cx25821_fh *fh = file->private_data;
02b20b0b	147
1a9fc855	148	switch (fh->type) {
bb4c9a74	149	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
f2466d63	150	if (cx25821_res_locked(fh->dev, RESOURCE_VIDEO2))
1a9fc855	151	return -EBUSY;
02b20b0b	152
1a9fc855 MCC	153	return videobuf_read_one(&fh->vidq, data, count, ppos,
1a9fc855 MCC	154	file->f_flags & O_NONBLOCK);
02b20b0b	155
bb4c9a74	156	default:
1a9fc855 MCC	157	BUG();
	158	return 0;
	159	}
02b20b0b MCC	160	}
02b20b0b MCC	161
1a9fc855 MCC	162	static unsigned int video_poll(struct file *file,
1a9fc855 MCC	163	struct poll_table_struct *wait)
02b20b0b	164	{
1a9fc855 MCC	165	struct cx25821_fh *fh = file->private_data;
	166	struct cx25821_buffer *buf;
	167
f2466d63	168	if (cx25821_res_check(fh, RESOURCE_VIDEO2)) {
1a9fc855 MCC	169	/* streaming capture */
	170	if (list_empty(&fh->vidq.stream))
	171	return POLLERR;
	172	buf = list_entry(fh->vidq.stream.next,
	173	struct cx25821_buffer, vb.stream);
	174	} else {
	175	/* read() capture */
	176	buf = (struct cx25821_buffer *)fh->vidq.read_buf;
	177	if (NULL == buf)
	178	return POLLERR;
bb4c9a74 MCC	179	}
bb4c9a74 MCC	180
1a9fc855 MCC	181	poll_wait(file, &buf->vb.done, wait);
	182	if (buf->vb.state == VIDEOBUF_DONE \|\| buf->vb.state == VIDEOBUF_ERROR) {
	183	if (buf->vb.state == VIDEOBUF_DONE) {
	184	struct cx25821_dev *dev = fh->dev;
	185
	186	if (dev && dev->use_cif_resolution[SRAM_CH02]) {
	187	u8 cam_id = ((char )buf->vb.baddr + 3);
	188	memcpy((char *)buf->vb.baddr,
	189	(char )buf->vb.baddr + (fh->width 2),
	190	(fh->width * 2));
	191	((char )buf->vb.baddr + 3) = cam_id;
	192	}
	193	}
	194
	195	return POLLIN \| POLLRDNORM;
	196	}
bb4c9a74	197
1a9fc855	198	return 0;
02b20b0b MCC	199	}
02b20b0b MCC	200
02b20b0b MCC	201	static int video_release(struct file *file)
02b20b0b MCC	202	{
1a9fc855 MCC	203	struct cx25821_fh *fh = file->private_data;
1a9fc855 MCC	204	struct cx25821_dev *dev = fh->dev;
02b20b0b	205
1a9fc855 MCC	206	//stop the risc engine and fifo
1a9fc855 MCC	207	cx_write(channel2->dma_ctl, 0); /* FIFO and RISC disable */
02b20b0b	208
1a9fc855	209	/* stop video capture */
f2466d63	210	if (cx25821_res_check(fh, RESOURCE_VIDEO2)) {
1a9fc855	211	videobuf_queue_cancel(&fh->vidq);
f2466d63	212	cx25821_res_free(dev, fh, RESOURCE_VIDEO2);
1a9fc855	213	}
02b20b0b	214
1a9fc855	215	if (fh->vidq.read_buf) {
f2466d63	216	cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf);
1a9fc855 MCC	217	kfree(fh->vidq.read_buf);
1a9fc855 MCC	218	}
02b20b0b	219
1a9fc855	220	videobuf_mmap_free(&fh->vidq);
02b20b0b	221
1a9fc855 MCC	222	v4l2_prio_close(&dev->prio, &fh->prio);
	223	file->private_data = NULL;
	224	kfree(fh);
02b20b0b	225
1a9fc855	226	return 0;
02b20b0b MCC	227	}
02b20b0b MCC	228
02b20b0b MCC	229	static int vidioc_streamon(struct file file, void priv, enum v4l2_buf_type i)
02b20b0b MCC	230	{
1a9fc855 MCC	231	struct cx25821_fh *fh = priv;
1a9fc855 MCC	232	struct cx25821_dev *dev = fh->dev;
02b20b0b	233
1a9fc855 MCC	234	if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
	235	return -EINVAL;
	236	}
02b20b0b	237
1a9fc855 MCC	238	if (unlikely(i != fh->type)) {
	239	return -EINVAL;
	240	}
02b20b0b	241
f2466d63	242	if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh, RESOURCE_VIDEO2)))) {
1a9fc855 MCC	243	return -EBUSY;
1a9fc855 MCC	244	}
02b20b0b	245
1a9fc855	246	return videobuf_streamon(get_queue(fh));
02b20b0b MCC	247	}
	248
	249	static int vidioc_streamoff(struct file file, void priv, enum v4l2_buf_type i)
	250	{
1a9fc855 MCC	251	struct cx25821_fh *fh = priv;
	252	struct cx25821_dev *dev = fh->dev;
	253	int err, res;
	254
	255	if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	256	return -EINVAL;
	257	if (i != fh->type)
	258	return -EINVAL;
	259
f2466d63	260	res = cx25821_get_resource(fh, RESOURCE_VIDEO2);
1a9fc855 MCC	261	err = videobuf_streamoff(get_queue(fh));
	262	if (err < 0)
	263	return err;
f2466d63	264	cx25821_res_free(dev, fh, res);
1a9fc855	265	return 0;
02b20b0b MCC	266	}
02b20b0b MCC	267
1a9fc855 MCC	268	static int vidioc_s_fmt_vid_cap(struct file file, void priv,
	269	struct v4l2_format *f)
	270	{
	271	struct cx25821_fh *fh = priv;
	272	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
	273	int err;
	274	int pix_format = 0;
02b20b0b	275
1a9fc855 MCC	276	if (fh) {
	277	err = v4l2_prio_check(&dev->prio, &fh->prio);
	278	if (0 != err)
	279	return err;
	280	}
	281
	282	dprintk(2, "%s()\n", __func__);
f2466d63	283	err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
02b20b0b	284
bb4c9a74	285	if (0 != err)
1a9fc855 MCC	286	return err;
	287
	288	fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
	289	fh->vidq.field = f->fmt.pix.field;
	290
	291	// check if width and height is valid based on set standard
f2466d63	292	if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm)) {
1a9fc855 MCC	293	fh->width = f->fmt.pix.width;
	294	}
	295
f2466d63	296	if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm)) {
1a9fc855 MCC	297	fh->height = f->fmt.pix.height;
	298	}
	299
	300	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
	301	pix_format = PIXEL_FRMT_411;
	302	else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
	303	pix_format = PIXEL_FRMT_422;
	304	else
	305	return -EINVAL;
	306
	307	cx25821_set_pixel_format(dev, SRAM_CH02, pix_format);
	308
	309	// check if cif resolution
	310	if (fh->width == 320 \|\| fh->width == 352) {
	311	dev->use_cif_resolution[SRAM_CH02] = 1;
	312	} else {
	313	dev->use_cif_resolution[SRAM_CH02] = 0;
	314	}
	315	dev->cif_width[SRAM_CH02] = fh->width;
	316	medusa_set_resolution(dev, fh->width, SRAM_CH02);
	317
	318	dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
	319	fh->height, fh->vidq.field);
	320	cx25821_call_all(dev, video, s_fmt, f);
	321
	322	return 0;
02b20b0b MCC	323	}
	324
	325	static int vidioc_dqbuf(struct file file, void priv, struct v4l2_buffer *p)
	326	{
1a9fc855 MCC	327	int ret_val = 0;
	328	struct cx25821_fh *fh = priv;
	329	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
02b20b0b	330
1a9fc855	331	ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
02b20b0b	332
1a9fc855	333	p->sequence = dev->vidq[SRAM_CH02].count;
02b20b0b	334
1a9fc855	335	return ret_val;
02b20b0b MCC	336	}
02b20b0b MCC	337
1a9fc855	338	static int vidioc_log_status(struct file file, void priv)
02b20b0b	339	{
1a9fc855 MCC	340	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
1a9fc855 MCC	341	char name[32 + 2];
02b20b0b	342
1a9fc855 MCC	343	struct sram_channel *sram_ch = &dev->sram_channels[SRAM_CH02];
1a9fc855 MCC	344	u32 tmp = 0;
02b20b0b	345
1a9fc855 MCC	346	snprintf(name, sizeof(name), "%s/2", dev->name);
1a9fc855 MCC	347	printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n",
02b20b0b	348	dev->name);
bb4c9a74	349
1a9fc855	350	cx25821_call_all(dev, core, log_status);
bb4c9a74	351
1a9fc855 MCC	352	tmp = cx_read(sram_ch->dma_ctl);
	353	printk(KERN_INFO "Video input 2 is %s\n",
	354	(tmp & 0x11) ? "streaming" : "stopped");
	355	printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n",
02b20b0b	356	dev->name);
1a9fc855	357	return 0;
02b20b0b MCC	358	}
	359
	360	static int vidioc_s_ctrl(struct file file, void priv,
1a9fc855	361	struct v4l2_control *ctl)
02b20b0b MCC	362	{
02b20b0b MCC	363	struct cx25821_fh *fh = priv;
bb4c9a74 MCC	364	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
bb4c9a74 MCC	365	int err;
02b20b0b	366
bb4c9a74	367	if (fh) {
02b20b0b MCC	368	err = v4l2_prio_check(&dev->prio, &fh->prio);
	369	if (0 != err)
	370	return err;
	371	}
	372
	373	return cx25821_set_control(dev, ctl, SRAM_CH02);
	374	}
1a9fc855	375
02b20b0b MCC	376	// exported stuff
02b20b0b MCC	377	static const struct v4l2_file_operations video_fops = {
1a9fc855 MCC	378	.owner = THIS_MODULE,
	379	.open = video_open,
	380	.release = video_release,
	381	.read = video_read,
	382	.poll = video_poll,
f2466d63	383	.mmap = cx25821_video_mmap,
1a9fc855	384	.ioctl = video_ioctl2,
02b20b0b MCC	385	};
	386
	387	static const struct v4l2_ioctl_ops video_ioctl_ops = {
f2466d63 MCC	388	.vidioc_querycap = cx25821_vidioc_querycap,
	389	.vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap,
	390	.vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap,
	391	.vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap,
1a9fc855	392	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
f2466d63 MCC	393	.vidioc_reqbufs = cx25821_vidioc_reqbufs,
	394	.vidioc_querybuf = cx25821_vidioc_querybuf,
	395	.vidioc_qbuf = cx25821_vidioc_qbuf,
1a9fc855	396	.vidioc_dqbuf = vidioc_dqbuf,
02b20b0b	397	#ifdef TUNER_FLAG
f2466d63 MCC	398	.vidioc_s_std = cx25821_vidioc_s_std,
f2466d63 MCC	399	.vidioc_querystd = cx25821_vidioc_querystd,
02b20b0b	400	#endif
f2466d63 MCC	401	.vidioc_cropcap = cx25821_vidioc_cropcap,
	402	.vidioc_s_crop = cx25821_vidioc_s_crop,
	403	.vidioc_g_crop = cx25821_vidioc_g_crop,
	404	.vidioc_enum_input = cx25821_vidioc_enum_input,
	405	.vidioc_g_input = cx25821_vidioc_g_input,
	406	.vidioc_s_input = cx25821_vidioc_s_input,
	407	.vidioc_g_ctrl = cx25821_vidioc_g_ctrl,
1a9fc855	408	.vidioc_s_ctrl = vidioc_s_ctrl,
f2466d63	409	.vidioc_queryctrl = cx25821_vidioc_queryctrl,
1a9fc855 MCC	410	.vidioc_streamon = vidioc_streamon,
	411	.vidioc_streamoff = vidioc_streamoff,
	412	.vidioc_log_status = vidioc_log_status,
f2466d63 MCC	413	.vidioc_g_priority = cx25821_vidioc_g_priority,
f2466d63 MCC	414	.vidioc_s_priority = cx25821_vidioc_s_priority,
02b20b0b	415	#ifdef CONFIG_VIDEO_V4L1_COMPAT
f2466d63	416	.vidiocgmbuf = cx25821_vidiocgmbuf,
02b20b0b MCC	417	#endif
02b20b0b MCC	418	#ifdef TUNER_FLAG
f2466d63 MCC	419	.vidioc_g_tuner = cx25821_vidioc_g_tuner,
	420	.vidioc_s_tuner = cx25821_vidioc_s_tuner,
	421	.vidioc_g_frequency = cx25821_vidioc_g_frequency,
	422	.vidioc_s_frequency = cx25821_vidioc_s_frequency,
02b20b0b MCC	423	#endif
02b20b0b MCC	424	#ifdef CONFIG_VIDEO_ADV_DEBUG
f2466d63 MCC	425	.vidioc_g_register = cx25821_vidioc_g_register,
f2466d63 MCC	426	.vidioc_s_register = cx25821_vidioc_s_register,
02b20b0b MCC	427	#endif
	428	};
	429
	430	struct video_device cx25821_video_template2 = {
1a9fc855 MCC	431	.name = "cx25821-video",
1a9fc855 MCC	432	.fops = &video_fops,
1a9fc855 MCC	433	.ioctl_ops = &video_ioctl_ops,
	434	.tvnorms = CX25821_NORMS,
	435	.current_norm = V4L2_STD_NTSC_M,
02b20b0b	436	};