/*

* Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>

*

* Original author:

* Ben Collins <bcollins@ubuntu.com>

*

* Additional work by:

* John Brooks <john.brooks@bluecherry.net>

*

* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

*/

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/kthread.h>

#include <linux/freezer.h>

#include <media/v4l2-ioctl.h>

#include <media/v4l2-common.h>

#include <media/videobuf-dma-contig.h>

#include "solo6x10.h"

#include "tw28.h"

#define SOLO_DISP_PIX_FIELD V4L2_FIELD_INTERLACED

/* Image size is two fields, SOLO_HW_BPL is one horizontal line in hardware */

#define SOLO_HW_BPL 2048

#define solo_vlines(__solo) (__solo->video_vsize * 2)

#define solo_image_size(__solo) (solo_bytesperline(__solo) * \

solo_vlines(__solo))

#define solo_bytesperline(__solo) (__solo->video_hsize * 2)

#define MIN_VID_BUFFERS 2

/* Simple file handle */

struct solo_filehandle {

};

static inline void erase_on(struct solo_dev *solo_dev)

{

solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);

solo_dev->erasing = 1;

solo_dev->frame_blank = 0;

}

static inline int erase_off(struct solo_dev *solo_dev)

{

if (!solo_dev->erasing)

return 0;

/* First time around, assert erase off */

if (!solo_dev->frame_blank)

solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);

/* Keep the erasing flag on for 8 frames minimum */

if (solo_dev->frame_blank++ >= 8)

solo_dev->erasing = 0;

return 1;

}

void solo_video_in_isr(struct solo_dev *solo_dev)

{

wake_up_interruptible_all(&solo_dev->disp_thread_wait);

}

static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,

int sx, int sy, int ex, int ey, int scale)

{

if (ch >= solo_dev->nr_chans)

return;

/* Here, we just keep window/channel the same */

solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),

SOLO_VI_WIN_CHANNEL(ch) |

SOLO_VI_WIN_SX(sx) |

SOLO_VI_WIN_EX(ex) |

SOLO_VI_WIN_SCALE(scale));

solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),

SOLO_VI_WIN_SY(sy) |

SOLO_VI_WIN_EY(ey));

}

static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)

{

u8 ch = idx * 4;

if (ch >= solo_dev->nr_chans)

return -EINVAL;

if (!on) {

u8 i;

for (i = ch; i < ch + 4; i++)

solo_win_setup(solo_dev, i, solo_dev->video_hsize,

solo_vlines(solo_dev),

solo_dev->video_hsize,

solo_vlines(solo_dev), 0);

return 0;

}

/* Row 1 */

solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,

solo_vlines(solo_dev) / 2, 3);

solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,

solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);

/* Row 2 */

solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,

solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);

solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,

solo_vlines(solo_dev) / 2, solo_dev->video_hsize,

solo_vlines(solo_dev), 3);

return 0;

}

static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)

{

int sy, ysize, hsize, i;

if (!on) {

for (i = 0; i < 16; i++)

solo_win_setup(solo_dev, i, solo_dev->video_hsize,

solo_vlines(solo_dev),

solo_dev->video_hsize,

solo_vlines(solo_dev), 0);

return 0;

}

ysize = solo_vlines(solo_dev) / 4;

hsize = solo_dev->video_hsize / 4;

for (sy = 0, i = 0; i < 4; i++, sy += ysize) {

solo_win_setup(solo_dev, i * 4, 0, sy, hsize,

sy + ysize, 5);

solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,

hsize * 2, sy + ysize, 5);

solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,

hsize * 3, sy + ysize, 5);

solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,

solo_dev->video_hsize, sy + ysize, 5);

}

return 0;

}

static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)

{

u8 ext_ch;

if (ch < solo_dev->nr_chans) {

solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,

on ? 0 : solo_vlines(solo_dev),

solo_dev->video_hsize, solo_vlines(solo_dev),

on ? 1 : 0);

return 0;

}

if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)

return -EINVAL;

ext_ch = ch - solo_dev->nr_chans;

/* 4up's first */

if (ext_ch < 4)

return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);

/* Remaining case is 16up for 16-port */

return solo_v4l2_ch_ext_16up(solo_dev, on);

}

static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)

{

if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)

return -EINVAL;

erase_on(solo_dev);

solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);

solo_v4l2_ch(solo_dev, ch, 1);

solo_dev->cur_disp_ch = ch;

return 0;

}

static void solo_fillbuf(struct solo_filehandle *fh,

struct videobuf_buffer *vb)

{

struct solo_dev *solo_dev = fh->solo_dev;

dma_addr_t vbuf;

unsigned int fdma_addr;

int error = -1;

int i;

vbuf = videobuf_to_dma_contig(vb);

if (!vbuf)

goto finish_buf;

if (erase_off(solo_dev)) {

void *p = videobuf_queue_to_vaddr(&fh->vidq, vb);

int image_size = solo_image_size(solo_dev);

for (i = 0; i < image_size; i += 2) {

((u8 *)p)[i] = 0x80;

((u8 *)p)[i + 1] = 0x00;

}

error = 0;

} else {

fdma_addr = SOLO_DISP_EXT_ADDR + (fh->old_write *

(SOLO_HW_BPL * solo_vlines(solo_dev)));

error = solo_p2m_dma_t(solo_dev, 0, vbuf, fdma_addr,

solo_bytesperline(solo_dev),

solo_vlines(solo_dev), SOLO_HW_BPL);

}

finish_buf:

if (error) {

vb->state = VIDEOBUF_ERROR;

} else {

vb->state = VIDEOBUF_DONE;

vb->field_count++;

}

wake_up(&vb->done);

}

static void solo_thread_try(struct solo_filehandle *fh)

{

struct videobuf_buffer *vb;

/* Only "break" from this loop if slock is held, otherwise

* just return. */

for (;;) {

unsigned int cur_write;

cur_write = SOLO_VI_STATUS0_PAGE(

solo_reg_read(fh->solo_dev, SOLO_VI_STATUS0));

if (cur_write == fh->old_write)

return;

spin_lock(&fh->slock);

if (list_empty(&fh->vidq_active))

break;

vb = list_first_entry(&fh->vidq_active, struct videobuf_buffer,

queue);

if (!waitqueue_active(&vb->done))

break;

fh->old_write = cur_write;

list_del(&vb->queue);

vb->state = VIDEOBUF_ACTIVE;

spin_unlock(&fh->slock);

solo_fillbuf(fh, vb);

}

assert_spin_locked(&fh->slock);

spin_unlock(&fh->slock);

}

static int solo_thread(void *data)

{

struct solo_filehandle *fh = data;

struct solo_dev *solo_dev = fh->solo_dev;

DECLARE_WAITQUEUE(wait, current);

set_freezable();

add_wait_queue(&solo_dev->disp_thread_wait, &wait);

for (;;) {

long timeout = schedule_timeout_interruptible(HZ);

if (timeout == -ERESTARTSYS || kthread_should_stop())

break;

solo_thread_try(fh);

try_to_freeze();

}

remove_wait_queue(&solo_dev->disp_thread_wait, &wait);

return 0;

}

static int solo_start_thread(struct solo_filehandle *fh)

{

int ret = 0;

if (atomic_inc_return(&fh->solo_dev->disp_users) == 1)

solo_irq_on(fh->solo_dev, SOLO_IRQ_VIDEO_IN);

fh->kthread = kthread_run(solo_thread, fh, SOLO6X10_NAME "_disp");

if (IS_ERR(fh->kthread)) {

ret = PTR_ERR(fh->kthread);

fh->kthread = NULL;

}

return ret;

}

static void solo_stop_thread(struct solo_filehandle *fh)

{

if (!fh->kthread)

return;

kthread_stop(fh->kthread);

fh->kthread = NULL;

if (atomic_dec_return(&fh->solo_dev->disp_users) == 0)

solo_irq_off(fh->solo_dev, SOLO_IRQ_VIDEO_IN);

}

static int solo_buf_setup(struct videobuf_queue *vq, unsigned int *count,

unsigned int *size)

{

struct solo_filehandle *fh = vq->priv_data;

struct solo_dev *solo_dev = fh->solo_dev;

*size = solo_image_size(solo_dev);

if (*count < MIN_VID_BUFFERS)

*count = MIN_VID_BUFFERS;

return 0;

}

static int solo_buf_prepare(struct videobuf_queue *vq,

struct videobuf_buffer *vb, enum v4l2_field field)

{

struct solo_filehandle *fh = vq->priv_data;

struct solo_dev *solo_dev = fh->solo_dev;

vb->size = solo_image_size(solo_dev);

if (vb->baddr != 0 && vb->bsize < vb->size)

return -EINVAL;

/* XXX: These properties only change when queue is idle */

vb->width = solo_dev->video_hsize;

vb->height = solo_vlines(solo_dev);

vb->bytesperline = solo_bytesperline(solo_dev);

vb->field = field;

if (vb->state == VIDEOBUF_NEEDS_INIT) {

int rc = videobuf_iolock(vq, vb, NULL);

if (rc < 0) {

videobuf_dma_contig_free(vq, vb);

vb->state = VIDEOBUF_NEEDS_INIT;

return rc;

}

}

vb->state = VIDEOBUF_PREPARED;

return 0;

}

static void solo_buf_queue(struct videobuf_queue *vq,

struct videobuf_buffer *vb)

{

struct solo_filehandle *fh = vq->priv_data;

struct solo_dev *solo_dev = fh->solo_dev;

vb->state = VIDEOBUF_QUEUED;

list_add_tail(&vb->queue, &fh->vidq_active);

wake_up_interruptible(&solo_dev->disp_thread_wait);

}

static void solo_buf_release(struct videobuf_queue *vq,

struct videobuf_buffer *vb)

{

videobuf_dma_contig_free(vq, vb);

vb->state = VIDEOBUF_NEEDS_INIT;

}

static const struct videobuf_queue_ops solo_video_qops = {

.buf_setup = solo_buf_setup,

.buf_prepare = solo_buf_prepare,

.buf_queue = solo_buf_queue,

.buf_release = solo_buf_release,

};

static unsigned int solo_v4l2_poll(struct file *file,

struct poll_table_struct *wait)

{

struct solo_filehandle *fh = file->private_data;

return videobuf_poll_stream(file, &fh->vidq, wait);

}

static int solo_v4l2_mmap(struct file *file, struct vm_area_struct *vma)

{

struct solo_filehandle *fh = file->private_data;

return videobuf_mmap_mapper(&fh->vidq, vma);

}

#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)

static int solo_v4l2_open(struct file *file)

#else

static int solo_v4l2_open(struct inode *ino, struct file *file)

#endif

{

struct solo_dev *solo_dev = video_drvdata(file);

struct solo_filehandle *fh;

int ret;

fh = kzalloc(sizeof(*fh), GFP_KERNEL);

if (fh == NULL)

return -ENOMEM;

spin_lock_init(&fh->slock);

INIT_LIST_HEAD(&fh->vidq_active);

fh->solo_dev = solo_dev;

file->private_data = fh;

ret = solo_start_thread(fh);

if (ret) {

kfree(fh);

return ret;

}

#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 37)

videobuf_queue_dma_contig_init(&fh->vidq, &solo_video_qops,

&solo_dev->pdev->dev, &fh->slock,

V4L2_BUF_TYPE_VIDEO_CAPTURE,

SOLO_DISP_PIX_FIELD,

sizeof(struct videobuf_buffer),

fh, NULL);

#else

videobuf_queue_dma_contig_init(&fh->vidq, &solo_video_qops,

&solo_dev->pdev->dev, &fh->slock,

V4L2_BUF_TYPE_VIDEO_CAPTURE,

SOLO_DISP_PIX_FIELD,

sizeof(struct videobuf_buffer), fh);

#endif

return 0;

}

static ssize_t solo_v4l2_read(struct file *file, char __user *data,

size_t count, loff_t *ppos)

{

struct solo_filehandle *fh = file->private_data;

return videobuf_read_stream(&fh->vidq, data, count, ppos, 0,

file->f_flags & O_NONBLOCK);

}

#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)

static int solo_v4l2_release(struct file *file)

#else

static int solo_v4l2_release(struct inode *ino, struct file *file)

#endif

{

struct solo_filehandle *fh = file->private_data;

solo_stop_thread(fh);

videobuf_stop(&fh->vidq);

videobuf_mmap_free(&fh->vidq);

kfree(fh);

return 0;

}

static int solo_querycap(struct file *file, void *priv,

struct v4l2_capability *cap)

{

struct solo_filehandle *fh = priv;

struct solo_dev *solo_dev = fh->solo_dev;

strcpy(cap->driver, SOLO6X10_NAME);

strcpy(cap->card, "Softlogic 6x10");

snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI %s",

pci_name(solo_dev->pdev));

cap->version = SOLO6X10_VER_NUM;

cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |

V4L2_CAP_READWRITE |

V4L2_CAP_STREAMING;

return 0;

}

static int solo_enum_ext_input(struct solo_dev *solo_dev,

struct v4l2_input *input)

{

static const char * const dispnames_1[] = { "4UP" };

static const char * const dispnames_2[] = { "4UP-1", "4UP-2" };

static const char * const dispnames_5[] = {

"4UP-1", "4UP-2", "4UP-3", "4UP-4", "16UP"

};

const char * const *dispnames;

if (input->index >= (solo_dev->nr_chans + solo_dev->nr_ext))

return -EINVAL;

if (solo_dev->nr_ext == 5)

dispnames = dispnames_5;

else if (solo_dev->nr_ext == 2)

dispnames = dispnames_2;

else

dispnames = dispnames_1;

snprintf(input->name, sizeof(input->name), "Multi %s",

dispnames[input->index - solo_dev->nr_chans]);

return 0;

}

static int solo_enum_input(struct file *file, void *priv,

struct v4l2_input *input)

{

struct solo_filehandle *fh = priv;

struct solo_dev *solo_dev = fh->solo_dev;

if (input->index >= solo_dev->nr_chans) {

int ret = solo_enum_ext_input(solo_dev, input);

if (ret < 0)

return ret;

} else {

snprintf(input->name, sizeof(input->name), "Camera %d",

input->index + 1);

/* We can only check this for normal inputs */

if (!tw28_get_video_status(solo_dev, input->index))

input->status = V4L2_IN_ST_NO_SIGNAL;

}

input->type = V4L2_INPUT_TYPE_CAMERA;

if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)

input->std = V4L2_STD_NTSC_M;

else

input->std = V4L2_STD_PAL_B;

return 0;

}

static int solo_set_input(struct file *file, void *priv, unsigned int index)

{

struct solo_filehandle *fh = priv;

int ret = solo_v4l2_set_ch(fh->solo_dev, index);

if (!ret) {

while (erase_off(fh->solo_dev))

/* Do nothing */;

}

return ret;

}

static int solo_get_input(struct file *file, void *priv, unsigned int *index)

{

struct solo_filehandle *fh = priv;

*index = fh->solo_dev->cur_disp_ch;

return 0;

}

static int solo_enum_fmt_cap(struct file *file, void *priv,

struct v4l2_fmtdesc *f)

{

if (f->index)

return -EINVAL;

f->pixelformat = V4L2_PIX_FMT_UYVY;

strlcpy(f->description, "UYUV 4:2:2 Packed", sizeof(f->description));

return 0;

}

static int solo_try_fmt_cap(struct file *file, void *priv,

struct v4l2_format *f)

{

struct solo_filehandle *fh = priv;

struct solo_dev *solo_dev = fh->solo_dev;

struct v4l2_pix_format *pix = &f->fmt.pix;

int image_size = solo_image_size(solo_dev);

/* Check supported sizes */

if (pix->width != solo_dev->video_hsize)

pix->width = solo_dev->video_hsize;

if (pix->height != solo_vlines(solo_dev))

pix->height = solo_vlines(solo_dev);

if (pix->sizeimage != image_size)

pix->sizeimage = image_size;

/* Check formats */

if (pix->field == V4L2_FIELD_ANY)

pix->field = SOLO_DISP_PIX_FIELD;

if (pix->pixelformat != V4L2_PIX_FMT_UYVY ||

pix->field != SOLO_DISP_PIX_FIELD ||

pix->colorspace != V4L2_COLORSPACE_SMPTE170M)

return -EINVAL;

return 0;

}

static int solo_set_fmt_cap(struct file *file, void *priv,

struct v4l2_format *f)

{

struct solo_filehandle *fh = priv;

if (videobuf_queue_is_busy(&fh->vidq))

return -EBUSY;

/* For right now, if it doesn't match our running config,

* then fail */

return solo_try_fmt_cap(file, priv, f);

}

static int solo_get_fmt_cap(struct file *file, void *priv,

struct v4l2_format *f)

{

struct solo_filehandle *fh = priv;

struct solo_dev *solo_dev = fh->solo_dev;

struct v4l2_pix_format *pix = &f->fmt.pix;

pix->width = solo_dev->video_hsize;

pix->height = solo_vlines(solo_dev);

pix->pixelformat = V4L2_PIX_FMT_UYVY;

pix->field = SOLO_DISP_PIX_FIELD;

pix->sizeimage = solo_image_size(solo_dev);

pix->colorspace = V4L2_COLORSPACE_SMPTE170M;

pix->bytesperline = solo_bytesperline(solo_dev);

return 0;

}

static int solo_reqbufs(struct file *file, void *priv,

struct v4l2_requestbuffers *req)

{

struct solo_filehandle *fh = priv;

return videobuf_reqbufs(&fh->vidq, req);

}

static int solo_querybuf(struct file *file, void *priv,

struct v4l2_buffer *buf)

{

struct solo_filehandle *fh = priv;

return videobuf_querybuf(&fh->vidq, buf);

}

static int solo_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)

{

struct solo_filehandle *fh = priv;

return videobuf_qbuf(&fh->vidq, buf);

}

static int solo_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)

{

struct solo_filehandle *fh = priv;

return videobuf_dqbuf(&fh->vidq, buf, file->f_flags & O_NONBLOCK);

}

static int solo_streamon(struct file *file, void *priv, enum v4l2_buf_type i)

{

struct solo_filehandle *fh = priv;

if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)

return -EINVAL;

return videobuf_streamon(&fh->vidq);

}

static int solo_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)

{

struct solo_filehandle *fh = priv;

if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)

return -EINVAL;

return videobuf_streamoff(&fh->vidq);

}

static int solo_s_std(struct file *file, void *priv, v4l2_std_id *i)

{

return 0;

}

static const u32 solo_motion_ctrls[] = {

V4L2_CID_MOTION_TRACE,

0

};

static const u32 *solo_ctrl_classes[] = {

solo_motion_ctrls,

NULL

};

static int solo_disp_queryctrl(struct file *file, void *priv,

struct v4l2_queryctrl *qc)

{

qc->id = v4l2_ctrl_next(solo_ctrl_classes, qc->id);

if (!qc->id)

return -EINVAL;

switch (qc->id) {

#ifdef PRIVATE_CIDS

case V4L2_CID_MOTION_TRACE:

qc->type = V4L2_CTRL_TYPE_BOOLEAN;

qc->minimum = 0;

qc->maximum = qc->step = 1;

qc->default_value = 0;

strlcpy(qc->name, "Motion Detection Trace", sizeof(qc->name));

return 0;

#else

case V4L2_CID_MOTION_TRACE:

return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);

#endif

}

return -EINVAL;

}

static int solo_disp_g_ctrl(struct file *file, void *priv,

struct v4l2_control *ctrl)

{

struct solo_filehandle *fh = priv;

struct solo_dev *solo_dev = fh->solo_dev;

switch (ctrl->id) {

case V4L2_CID_MOTION_TRACE:

ctrl->value = solo_reg_read(solo_dev, SOLO_VI_MOTION_BAR)

? 1 : 0;

return 0;

}

return -EINVAL;

}

static int solo_disp_s_ctrl(struct file *file, void *priv,

struct v4l2_control *ctrl)

{

struct solo_filehandle *fh = priv;

struct solo_dev *solo_dev = fh->solo_dev;

switch (ctrl->id) {

case V4L2_CID_MOTION_TRACE:

if (ctrl->value) {

solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,

SOLO_VI_MOTION_Y_ADD |

SOLO_VI_MOTION_Y_VALUE(0x20) |

SOLO_VI_MOTION_CB_VALUE(0x10) |

SOLO_VI_MOTION_CR_VALUE(0x10));

solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,

SOLO_VI_MOTION_CR_ADD |

SOLO_VI_MOTION_Y_VALUE(0x10) |

SOLO_VI_MOTION_CB_VALUE(0x80) |

SOLO_VI_MOTION_CR_VALUE(0x10));

} else {

solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);

solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);

}

return 0;

}

return -EINVAL;

}

static const struct v4l2_file_operations solo_v4l2_fops = {

.owner = THIS_MODULE,

.open = solo_v4l2_open,

.release = solo_v4l2_release,

.read = solo_v4l2_read,

.poll = solo_v4l2_poll,

.mmap = solo_v4l2_mmap,

.ioctl = video_ioctl2,

};

static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {

.vidioc_querycap = solo_querycap,

.vidioc_s_std = solo_s_std,

/* Input callbacks */

.vidioc_enum_input = solo_enum_input,

.vidioc_s_input = solo_set_input,

.vidioc_g_input = solo_get_input,

/* Video capture format callbacks */

.vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap,

.vidioc_try_fmt_vid_cap = solo_try_fmt_cap,

.vidioc_s_fmt_vid_cap = solo_set_fmt_cap,

.vidioc_g_fmt_vid_cap = solo_get_fmt_cap,

/* Streaming I/O */

.vidioc_reqbufs = solo_reqbufs,

.vidioc_querybuf = solo_querybuf,

.vidioc_qbuf = solo_qbuf,

.vidioc_dqbuf = solo_dqbuf,

.vidioc_streamon = solo_streamon,

.vidioc_streamoff = solo_streamoff,

/* Controls */

.vidioc_queryctrl = solo_disp_queryctrl,

.vidioc_g_ctrl = solo_disp_g_ctrl,

.vidioc_s_ctrl = solo_disp_s_ctrl,

};

static struct video_device solo_v4l2_template = {

.name = SOLO6X10_NAME,

.fops = &solo_v4l2_fops,

.ioctl_ops = &solo_v4l2_ioctl_ops,

.minor = -1,

.release = video_device_release,

.tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL_B,

.current_norm = V4L2_STD_NTSC_M,

};

int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr)

{

int ret;

int i;

atomic_set(&solo_dev->disp_users, 0);

init_waitqueue_head(&solo_dev->disp_thread_wait);

solo_dev->vfd = video_device_alloc();

if (!solo_dev->vfd)

return -ENOMEM;

*solo_dev->vfd = solo_v4l2_template;

solo_dev->vfd->parent = &solo_dev->pdev->dev;

ret = video_register_device(solo_dev->vfd, VFL_TYPE_GRABBER, nr);

if (ret < 0) {

video_device_release(solo_dev->vfd);

solo_dev->vfd = NULL;

return ret;

}

video_set_drvdata(solo_dev->vfd, solo_dev);

snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",

SOLO6X10_NAME, solo_dev->vfd->num);

dev_info(&solo_dev->pdev->dev,

"Display as /dev/video%d with %d inputs (%d extended)\n",

solo_dev->vfd->num, solo_dev->nr_chans, solo_dev->nr_ext);

/* Cycle all the channels and clear */

for (i = 0; i < solo_dev->nr_chans; i++) {

solo_v4l2_set_ch(solo_dev, i);

while (erase_off(solo_dev))

/* Do nothing */;

}

/* Set the default display channel */

solo_v4l2_set_ch(solo_dev, 0);

while (erase_off(solo_dev))

/* Do nothing */;

return 0;

}

void solo_v4l2_exit(struct solo_dev *solo_dev)

{

if (solo_dev->vfd == NULL)

return;

video_unregister_device(solo_dev->vfd);

solo_dev->vfd = NULL;

}