[deliverable/linux.git] / drivers / staging / cx25821 / cx25821-video0.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_CH00];

	/* 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_CH00]);
		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 = buffer_setup,
	.buf_prepare = buffer_prepare,
	.buf_queue = buffer_queue,
	.buf_release = buffer_release,
};

static int video_open(struct file *file)
{
	int minor = video_devdata(file)->minor;
	struct cx25821_dev *h, *dev = NULL;
	struct cx25821_fh *fh;
	struct list_head *list;
	enum v4l2_buf_type type = 0;
	u32 pix_format;

	lock_kernel();
	list_for_each(list, &cx25821_devlist) {
		h = list_entry(list, struct cx25821_dev, devlist);

		if (h->video_dev[SRAM_CH00]
		    && h->video_dev[SRAM_CH00]->minor == minor) {
			dev = h;
			type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
		}
	}

	if (NULL == dev) {
		unlock_kernel();
		return -ENODEV;
	}

	printk("open minor=%d type=%s\n", minor, v4l2_type_names[type]);

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

	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_CH00;
	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 (res_locked(fh->dev, RESOURCE_VIDEO0))
			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 (res_check(fh, RESOURCE_VIDEO0)) {
		/* 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_CH00]) {
				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(channel0->dma_ctl, 0);	/* FIFO and RISC disable */

	/* stop video capture */
	if (res_check(fh, RESOURCE_VIDEO0)) {
		videobuf_queue_cancel(&fh->vidq);
		res_free(dev, fh, RESOURCE_VIDEO0);
	}

	if (fh->vidq.read_buf) {
		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(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO0)))) {
		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 = get_resource(fh, RESOURCE_VIDEO0);
	err = videobuf_streamoff(get_queue(fh));
	if (err < 0)
		return err;
	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 = PIXEL_FRMT_422;

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

	dprintk(2, "%s()\n", __func__);
	err = 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 (is_valid_width(f->fmt.pix.width, dev->tvnorm)) {
		fh->width = f->fmt.pix.width;
	}

	if (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_CH00, pix_format);

	// check if cif resolution
	if (fh->width == 320 || fh->width == 352) {
		dev->use_cif_resolution[SRAM_CH00] = 1;
	} else {
		dev->use_cif_resolution[SRAM_CH00] = 0;
	}
	dev->cif_width[SRAM_CH00] = fh->width;
	medusa_set_resolution(dev, fh->width, SRAM_CH00);

	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_CH00].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_CH00];
	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 0 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_CH00);
}

// 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 = video_mmap,
	.ioctl = video_ioctl2,
};

static const struct v4l2_ioctl_ops video_ioctl_ops = {
	.vidioc_querycap = vidioc_querycap,
	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
	.vidioc_reqbufs = vidioc_reqbufs,
	.vidioc_querybuf = vidioc_querybuf,
	.vidioc_qbuf = vidioc_qbuf,
	.vidioc_dqbuf = vidioc_dqbuf,
#ifdef TUNER_FLAG
	.vidioc_s_std = vidioc_s_std,
	.vidioc_querystd = vidioc_querystd,
#endif
	.vidioc_cropcap = vidioc_cropcap,
	.vidioc_s_crop = vidioc_s_crop,
	.vidioc_g_crop = vidioc_g_crop,
	.vidioc_enum_input = vidioc_enum_input,
	.vidioc_g_input = vidioc_g_input,
	.vidioc_s_input = vidioc_s_input,
	.vidioc_g_ctrl = vidioc_g_ctrl,
	.vidioc_s_ctrl = vidioc_s_ctrl,
	.vidioc_queryctrl = vidioc_queryctrl,
	.vidioc_streamon = vidioc_streamon,
	.vidioc_streamoff = vidioc_streamoff,
	.vidioc_log_status = vidioc_log_status,
	.vidioc_g_priority = vidioc_g_priority,
	.vidioc_s_priority = vidioc_s_priority,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
	.vidiocgmbuf = vidiocgmbuf,
#endif
#ifdef TUNER_FLAG
	.vidioc_g_tuner = vidioc_g_tuner,
	.vidioc_s_tuner = vidioc_s_tuner,
	.vidioc_g_frequency = vidioc_g_frequency,
	.vidioc_s_frequency = vidioc_s_frequency,
#endif
#ifdef CONFIG_VIDEO_ADV_DEBUG
	.vidioc_g_register = vidioc_g_register,
	.vidioc_s_register = vidioc_s_register,
#endif
};

struct video_device cx25821_video_template0 = {
	.name = "cx25821-video",
	.fops = &video_fops,
	.minor = -1,
	.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_CH00];
	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_CH00]);
	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 = {
1a9fc855 MCC	89	.buf_setup = buffer_setup,
	90	.buf_prepare = buffer_prepare,
	91	.buf_queue = buffer_queue,
	92	.buf_release = buffer_release,
02b20b0b MCC	93	};
02b20b0b MCC	94
02b20b0b MCC	95	static int video_open(struct file *file)
02b20b0b MCC	96	{
1a9fc855 MCC	97	int minor = video_devdata(file)->minor;
	98	struct cx25821_dev h, dev = NULL;
	99	struct cx25821_fh *fh;
	100	struct list_head *list;
	101	enum v4l2_buf_type type = 0;
	102	u32 pix_format;
	103
	104	lock_kernel();
	105	list_for_each(list, &cx25821_devlist) {
	106	h = list_entry(list, struct cx25821_dev, devlist);
	107
	108	if (h->video_dev[SRAM_CH00]
	109	&& h->video_dev[SRAM_CH00]->minor == minor) {
	110	dev = h;
	111	type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
	112	}
bb4c9a74	113	}
02b20b0b	114
1a9fc855 MCC	115	if (NULL == dev) {
	116	unlock_kernel();
	117	return -ENODEV;
	118	}
02b20b0b	119
1a9fc855	120	printk("open minor=%d type=%s\n", minor, v4l2_type_names[type]);
02b20b0b	121
1a9fc855 MCC	122	/* allocate + initialize per filehandle data */
	123	fh = kzalloc(sizeof(*fh), GFP_KERNEL);
	124	if (NULL == fh) {
	125	unlock_kernel();
	126	return -ENOMEM;
	127	}
02b20b0b	128
1a9fc855 MCC	129	file->private_data = fh;
	130	fh->dev = dev;
	131	fh->type = type;
	132	fh->width = 720;
02b20b0b	133
1a9fc855 MCC	134	if (dev->tvnorm & V4L2_STD_PAL_BG \|\| dev->tvnorm & V4L2_STD_PAL_DK)
	135	fh->height = 576;
	136	else
	137	fh->height = 480;
02b20b0b	138
1a9fc855 MCC	139	dev->channel_opened = SRAM_CH00;
	140	pix_format =
	141	(dev->pixel_formats[dev->channel_opened] ==
	142	PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV;
	143	fh->fmt = format_by_fourcc(pix_format);
bb4c9a74	144
1a9fc855	145	v4l2_prio_open(&dev->prio, &fh->prio);
02b20b0b	146
1a9fc855 MCC	147	videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
	148	&dev->pci->dev, &dev->slock,
	149	V4L2_BUF_TYPE_VIDEO_CAPTURE,
	150	V4L2_FIELD_INTERLACED,
	151	sizeof(struct cx25821_buffer), fh);
02b20b0b	152
1a9fc855 MCC	153	dprintk(1, "post videobuf_queue_init()\n");
1a9fc855 MCC	154	unlock_kernel();
02b20b0b	155
1a9fc855	156	return 0;
02b20b0b MCC	157	}
02b20b0b MCC	158
1a9fc855 MCC	159	static ssize_t video_read(struct file file, char __user data, size_t count,
1a9fc855 MCC	160	loff_t * ppos)
02b20b0b	161	{
1a9fc855	162	struct cx25821_fh *fh = file->private_data;
02b20b0b	163
1a9fc855	164	switch (fh->type) {
bb4c9a74	165	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1a9fc855 MCC	166	if (res_locked(fh->dev, RESOURCE_VIDEO0))
1a9fc855 MCC	167	return -EBUSY;
02b20b0b	168
1a9fc855 MCC	169	return videobuf_read_one(&fh->vidq, data, count, ppos,
1a9fc855 MCC	170	file->f_flags & O_NONBLOCK);
02b20b0b	171
bb4c9a74	172	default:
1a9fc855 MCC	173	BUG();
	174	return 0;
	175	}
02b20b0b MCC	176	}
02b20b0b MCC	177
1a9fc855 MCC	178	static unsigned int video_poll(struct file *file,
1a9fc855 MCC	179	struct poll_table_struct *wait)
02b20b0b	180	{
1a9fc855 MCC	181	struct cx25821_fh *fh = file->private_data;
	182	struct cx25821_buffer *buf;
	183
	184	if (res_check(fh, RESOURCE_VIDEO0)) {
	185	/* streaming capture */
	186	if (list_empty(&fh->vidq.stream))
	187	return POLLERR;
	188	buf = list_entry(fh->vidq.stream.next,
	189	struct cx25821_buffer, vb.stream);
	190	} else {
	191	/* read() capture */
	192	buf = (struct cx25821_buffer *)fh->vidq.read_buf;
	193	if (NULL == buf)
	194	return POLLERR;
bb4c9a74 MCC	195	}
bb4c9a74 MCC	196
1a9fc855 MCC	197	poll_wait(file, &buf->vb.done, wait);
	198	if (buf->vb.state == VIDEOBUF_DONE \|\| buf->vb.state == VIDEOBUF_ERROR) {
	199	if (buf->vb.state == VIDEOBUF_DONE) {
	200	struct cx25821_dev *dev = fh->dev;
	201
	202	if (dev && dev->use_cif_resolution[SRAM_CH00]) {
	203	u8 cam_id = ((char )buf->vb.baddr + 3);
	204	memcpy((char *)buf->vb.baddr,
	205	(char )buf->vb.baddr + (fh->width 2),
	206	(fh->width * 2));
	207	((char )buf->vb.baddr + 3) = cam_id;
	208	}
	209	}
	210
	211	return POLLIN \| POLLRDNORM;
	212	}
bb4c9a74	213
1a9fc855	214	return 0;
02b20b0b MCC	215	}
02b20b0b MCC	216
02b20b0b MCC	217	static int video_release(struct file *file)
02b20b0b MCC	218	{
1a9fc855 MCC	219	struct cx25821_fh *fh = file->private_data;
1a9fc855 MCC	220	struct cx25821_dev *dev = fh->dev;
02b20b0b	221
1a9fc855 MCC	222	//stop the risc engine and fifo
1a9fc855 MCC	223	cx_write(channel0->dma_ctl, 0); /* FIFO and RISC disable */
02b20b0b	224
1a9fc855 MCC	225	/* stop video capture */
	226	if (res_check(fh, RESOURCE_VIDEO0)) {
	227	videobuf_queue_cancel(&fh->vidq);
	228	res_free(dev, fh, RESOURCE_VIDEO0);
	229	}
02b20b0b	230
1a9fc855 MCC	231	if (fh->vidq.read_buf) {
	232	buffer_release(&fh->vidq, fh->vidq.read_buf);
	233	kfree(fh->vidq.read_buf);
	234	}
02b20b0b	235
1a9fc855	236	videobuf_mmap_free(&fh->vidq);
02b20b0b	237
1a9fc855 MCC	238	v4l2_prio_close(&dev->prio, &fh->prio);
	239	file->private_data = NULL;
	240	kfree(fh);
02b20b0b	241
1a9fc855	242	return 0;
02b20b0b MCC	243	}
02b20b0b MCC	244
02b20b0b MCC	245	static int vidioc_streamon(struct file file, void priv, enum v4l2_buf_type i)
02b20b0b MCC	246	{
1a9fc855 MCC	247	struct cx25821_fh *fh = priv;
1a9fc855 MCC	248	struct cx25821_dev *dev = fh->dev;
02b20b0b	249
1a9fc855 MCC	250	if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
	251	return -EINVAL;
	252	}
02b20b0b	253
1a9fc855 MCC	254	if (unlikely(i != fh->type)) {
	255	return -EINVAL;
	256	}
02b20b0b	257
1a9fc855 MCC	258	if (unlikely(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO0)))) {
	259	return -EBUSY;
	260	}
02b20b0b	261
1a9fc855	262	return videobuf_streamon(get_queue(fh));
02b20b0b MCC	263	}
	264
	265	static int vidioc_streamoff(struct file file, void priv, enum v4l2_buf_type i)
	266	{
1a9fc855 MCC	267	struct cx25821_fh *fh = priv;
	268	struct cx25821_dev *dev = fh->dev;
	269	int err, res;
	270
	271	if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	272	return -EINVAL;
	273	if (i != fh->type)
	274	return -EINVAL;
	275
	276	res = get_resource(fh, RESOURCE_VIDEO0);
	277	err = videobuf_streamoff(get_queue(fh));
	278	if (err < 0)
	279	return err;
	280	res_free(dev, fh, res);
	281	return 0;
02b20b0b MCC	282	}
02b20b0b MCC	283
1a9fc855 MCC	284	static int vidioc_s_fmt_vid_cap(struct file file, void priv,
1a9fc855 MCC	285	struct v4l2_format *f)
02b20b0b	286	{
1a9fc855 MCC	287	struct cx25821_fh *fh = priv;
	288	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
	289	int err;
	290	int pix_format = PIXEL_FRMT_422;
	291
	292	if (fh) {
	293	err = v4l2_prio_check(&dev->prio, &fh->prio);
	294	if (0 != err)
	295	return err;
	296	}
	297
	298	dprintk(2, "%s()\n", __func__);
	299	err = vidioc_try_fmt_vid_cap(file, priv, f);
	300
bb4c9a74	301	if (0 != err)
1a9fc855 MCC	302	return err;
	303
	304	fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
	305	fh->vidq.field = f->fmt.pix.field;
	306
	307	// check if width and height is valid based on set standard
	308	if (is_valid_width(f->fmt.pix.width, dev->tvnorm)) {
	309	fh->width = f->fmt.pix.width;
	310	}
	311
	312	if (is_valid_height(f->fmt.pix.height, dev->tvnorm)) {
	313	fh->height = f->fmt.pix.height;
	314	}
	315
	316	if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
	317	pix_format = PIXEL_FRMT_411;
	318	else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
	319	pix_format = PIXEL_FRMT_422;
	320	else
	321	return -EINVAL;
	322
	323	cx25821_set_pixel_format(dev, SRAM_CH00, pix_format);
	324
	325	// check if cif resolution
	326	if (fh->width == 320 \|\| fh->width == 352) {
	327	dev->use_cif_resolution[SRAM_CH00] = 1;
	328	} else {
	329	dev->use_cif_resolution[SRAM_CH00] = 0;
	330	}
	331	dev->cif_width[SRAM_CH00] = fh->width;
	332	medusa_set_resolution(dev, fh->width, SRAM_CH00);
	333
	334	dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
	335	fh->height, fh->vidq.field);
	336	cx25821_call_all(dev, video, s_fmt, f);
	337
	338	return 0;
02b20b0b MCC	339	}
	340
	341	static int vidioc_dqbuf(struct file file, void priv, struct v4l2_buffer *p)
	342	{
1a9fc855 MCC	343	int ret_val = 0;
	344	struct cx25821_fh *fh = priv;
	345	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
02b20b0b	346
1a9fc855	347	ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
02b20b0b	348
1a9fc855	349	p->sequence = dev->vidq[SRAM_CH00].count;
02b20b0b	350
1a9fc855	351	return ret_val;
02b20b0b MCC	352	}
02b20b0b MCC	353
1a9fc855	354	static int vidioc_log_status(struct file file, void priv)
02b20b0b	355	{
1a9fc855 MCC	356	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
1a9fc855 MCC	357	char name[32 + 2];
02b20b0b	358
1a9fc855 MCC	359	struct sram_channel *sram_ch = &dev->sram_channels[SRAM_CH00];
1a9fc855 MCC	360	u32 tmp = 0;
02b20b0b	361
1a9fc855 MCC	362	snprintf(name, sizeof(name), "%s/2", dev->name);
1a9fc855 MCC	363	printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n",
02b20b0b	364	dev->name);
1a9fc855 MCC	365	cx25821_call_all(dev, core, log_status);
	366	tmp = cx_read(sram_ch->dma_ctl);
	367	printk(KERN_INFO "Video input 0 is %s\n",
	368	(tmp & 0x11) ? "streaming" : "stopped");
	369	printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n",
02b20b0b	370	dev->name);
1a9fc855	371	return 0;
02b20b0b MCC	372	}
	373
	374	static int vidioc_s_ctrl(struct file file, void priv,
1a9fc855	375	struct v4l2_control *ctl)
02b20b0b MCC	376	{
02b20b0b MCC	377	struct cx25821_fh *fh = priv;
bb4c9a74 MCC	378	struct cx25821_dev dev = ((struct cx25821_fh )priv)->dev;
bb4c9a74 MCC	379	int err;
02b20b0b	380
bb4c9a74	381	if (fh) {
02b20b0b MCC	382	err = v4l2_prio_check(&dev->prio, &fh->prio);
	383	if (0 != err)
	384	return err;
	385	}
	386
	387	return cx25821_set_control(dev, ctl, SRAM_CH00);
	388	}
	389
	390	// exported stuff
	391	static const struct v4l2_file_operations video_fops = {
1a9fc855 MCC	392	.owner = THIS_MODULE,
	393	.open = video_open,
	394	.release = video_release,
	395	.read = video_read,
	396	.poll = video_poll,
	397	.mmap = video_mmap,
	398	.ioctl = video_ioctl2,
02b20b0b MCC	399	};
	400
	401	static const struct v4l2_ioctl_ops video_ioctl_ops = {
1a9fc855 MCC	402	.vidioc_querycap = vidioc_querycap,
	403	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
	404	.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
	405	.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
	406	.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
	407	.vidioc_reqbufs = vidioc_reqbufs,
	408	.vidioc_querybuf = vidioc_querybuf,
	409	.vidioc_qbuf = vidioc_qbuf,
	410	.vidioc_dqbuf = vidioc_dqbuf,
02b20b0b	411	#ifdef TUNER_FLAG
1a9fc855 MCC	412	.vidioc_s_std = vidioc_s_std,
1a9fc855 MCC	413	.vidioc_querystd = vidioc_querystd,
02b20b0b	414	#endif
1a9fc855 MCC	415	.vidioc_cropcap = vidioc_cropcap,
	416	.vidioc_s_crop = vidioc_s_crop,
	417	.vidioc_g_crop = vidioc_g_crop,
	418	.vidioc_enum_input = vidioc_enum_input,
	419	.vidioc_g_input = vidioc_g_input,
	420	.vidioc_s_input = vidioc_s_input,
	421	.vidioc_g_ctrl = vidioc_g_ctrl,
	422	.vidioc_s_ctrl = vidioc_s_ctrl,
	423	.vidioc_queryctrl = vidioc_queryctrl,
	424	.vidioc_streamon = vidioc_streamon,
	425	.vidioc_streamoff = vidioc_streamoff,
	426	.vidioc_log_status = vidioc_log_status,
	427	.vidioc_g_priority = vidioc_g_priority,
	428	.vidioc_s_priority = vidioc_s_priority,
02b20b0b	429	#ifdef CONFIG_VIDEO_V4L1_COMPAT
1a9fc855	430	.vidiocgmbuf = vidiocgmbuf,
02b20b0b MCC	431	#endif
02b20b0b MCC	432	#ifdef TUNER_FLAG
1a9fc855 MCC	433	.vidioc_g_tuner = vidioc_g_tuner,
	434	.vidioc_s_tuner = vidioc_s_tuner,
	435	.vidioc_g_frequency = vidioc_g_frequency,
	436	.vidioc_s_frequency = vidioc_s_frequency,
02b20b0b MCC	437	#endif
02b20b0b MCC	438	#ifdef CONFIG_VIDEO_ADV_DEBUG
1a9fc855 MCC	439	.vidioc_g_register = vidioc_g_register,
1a9fc855 MCC	440	.vidioc_s_register = vidioc_s_register,
02b20b0b MCC	441	#endif
	442	};
	443
	444	struct video_device cx25821_video_template0 = {
1a9fc855 MCC	445	.name = "cx25821-video",
	446	.fops = &video_fops,
	447	.minor = -1,
	448	.ioctl_ops = &video_ioctl_ops,
	449	.tvnorms = CX25821_NORMS,
	450	.current_norm = V4L2_STD_NTSC_M,
02b20b0b	451	};