/*!
* V4L2 interface - close function
*
* @param inode struct inode *
*
* @param file struct file *
*
* @return 0 success
*/
static int mxc_v4l2out_close(struct inode *inode, struct file *file)
{
struct video_device *dev = file->private_data;
vout_data *vout = video_get_drvdata(dev);
if (--vout->open_count == 0) {
DPRINTK("release resource\n");
if (vout->state != STATE_STREAM_OFF)
mxc_v4l2out_streamoff(vout);
/*
printk("g_irq_cnt = %d, g_buf_output_cnt = %d, " \
"g_buf_q_cnt = %d, g_buf_dq_cnt = %d\n",
g_irq_cnt, g_buf_output_cnt, g_buf_q_cnt, g_buf_dq_cnt);
*/
ipu_free_irq(IPU_IRQ_PP_IN_EOF, vout);
file->private_data = NULL;
mxc_free_buffers(vout->queue_buf_paddr, vout->buffer_cnt);
vout->buffer_cnt = 0;
mxc_free_buffers(vout->display_bufs, 2);
mxc_free_buffers(vout->rot_pp_bufs, 2);
/* capture off */
wake_up_interruptible(&vout->v4l_bufq);
}
return 0;
}
/*!
* V4L2 interface - close function
*
* @param inode struct inode *
*
* @param file struct file *
*
* @return 0 success
*/
static int mxc_v4l2out_close(struct inode *inode, struct file *file)
{
struct video_device *dev = file->private_data;
vout_data *vout = video_get_drvdata(dev);
if (--vout->open_count == 0) {
pr_debug("release resource\n");
pp_exit(vout);
if (vout->state != STATE_STREAM_OFF)
mxc_v4l2out_streamoff(vout);
file->private_data = NULL;
mxc_free_buffers(vout->queue_buf_paddr,
vout->queue_buf_vaddr,
vout->buffer_cnt, vout->queue_buf_size);
vout->buffer_cnt = 0;
mxc_free_buffers(vout->display_bufs,
vout->display_bufs_vaddr,
2, vout->sdc_fg_buf_size);
/* capture off */
wake_up_interruptible(&vout->v4l_bufq);
}
return 0;
}
/*!
* V4L2 interface - ioctl function
*
* @param inode struct inode *
*
* @param file struct file *
*
* @param ioctlnr unsigned int
*
* @param arg void *
*
* @return 0 success, ENODEV for invalid device instance,
* -1 for other errors.
*/
static int
mxc_v4l2out_do_ioctl(struct inode *inode, struct file *file,
unsigned int ioctlnr, void *arg)
{
struct video_device *dev = file->private_data;
vout_data *vout = video_get_drvdata(dev);
int retval = 0;
int i = 0;
if (!vout)
return -ENODEV;
/* make this _really_ smp-safe */
if (down_interruptible(&vout->busy_lock))
return -EINTR;
switch (ioctlnr) {
case VIDIOC_QUERYCAP:
{
struct v4l2_capability *cap = arg;
strcpy(cap->driver, "mxc_v4l2_output");
cap->version = 0;
cap->capabilities =
V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
retval = 0;
break;
}
case VIDIOC_G_FMT:
{
struct v4l2_format *gf = arg;
retval = mxc_v4l2out_g_fmt(vout, gf);
break;
}
case VIDIOC_S_FMT:
{
struct v4l2_format *sf = arg;
if (vout->state != STATE_STREAM_OFF) {
retval = -EBUSY;
break;
}
retval = mxc_v4l2out_s_fmt(vout, sf);
break;
}
case VIDIOC_REQBUFS:
{
struct v4l2_requestbuffers *req = arg;
if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) ||
(req->memory != V4L2_MEMORY_MMAP)) {
DPRINTK
("VIDIOC_REQBUFS: incorrect buffer type\n");
retval = -EINVAL;
break;
}
if (req->count == 0) {
mxc_v4l2out_streamoff(vout);
if (vout->queue_buf_paddr[0] != 0) {
mxc_free_buffers(vout->queue_buf_paddr,
vout->buffer_cnt);
DPRINTK
("VIDIOC_REQBUFS: freed buffers\n");
}
vout->buffer_cnt = 0;
break;
}
if (vout->queue_buf_paddr[0] != 0) {
DPRINTK
("VIDIOC_REQBUFS: Cannot allocate buffers\n");
retval = -EBUSY;
break;
}
if (req->count < MIN_FRAME_NUM) {
req->count = MIN_FRAME_NUM;
} else if (req->count > MAX_FRAME_NUM) {
req->count = MAX_FRAME_NUM;
}
vout->buffer_cnt = req->count;
retval = mxc_allocate_buffers(vout->queue_buf_paddr,
vout->buffer_cnt,
PAGE_ALIGN(vout->v2f.fmt.
pix.
sizeimage));
if (retval < 0)
break;
/* Init buffer queues */
vout->done_q.head = 0;
vout->done_q.tail = 0;
vout->ready_q.head = 0;
vout->ready_q.tail = 0;
for (i = 0; i < vout->buffer_cnt; i++) {
memset(&(vout->v4l2_bufs[i]), 0,
sizeof(vout->v4l2_bufs[i]));
vout->v4l2_bufs[i].flags = 0;
vout->v4l2_bufs[i].memory = V4L2_MEMORY_MMAP;
vout->v4l2_bufs[i].index = i;
vout->v4l2_bufs[i].type =
V4L2_BUF_TYPE_VIDEO_OUTPUT;
vout->v4l2_bufs[i].length =
PAGE_ALIGN(vout->v2f.fmt.pix.sizeimage);
vout->v4l2_bufs[i].m.offset =
(unsigned long)vout->queue_buf_paddr[i];
vout->v4l2_bufs[i].timestamp.tv_sec = 0;
vout->v4l2_bufs[i].timestamp.tv_usec = 0;
}
break;
}
case VIDIOC_QUERYBUF:
{
struct v4l2_buffer *buf = arg;
u32 type = buf->type;
int index = buf->index;
if ((type != V4L2_BUF_TYPE_VIDEO_OUTPUT) ||
(index >= vout->buffer_cnt)) {
DPRINTK
("VIDIOC_QUERYBUFS: incorrect buffer type\n");
retval = -EINVAL;
break;
}
down(&vout->param_lock);
memcpy(buf, &(vout->v4l2_bufs[index]), sizeof(*buf));
up(&vout->param_lock);
break;
}
case VIDIOC_QBUF:
{
struct v4l2_buffer *buf = arg;
int index = buf->index;
u32 lock_flags;
if ((buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) ||
(index >= vout->buffer_cnt) || (buf->flags != 0)) {
retval = -EINVAL;
break;
}
DPRINTK("VIDIOC_QBUF: %d\n", buf->index);
spin_lock_irqsave(&g_lock, lock_flags);
memcpy(&(vout->v4l2_bufs[index]), buf, sizeof(*buf));
vout->v4l2_bufs[index].flags |= V4L2_BUF_FLAG_QUEUED;
g_buf_q_cnt++;
queue_buf(&vout->ready_q, index);
if (vout->state == STATE_STREAM_PAUSED) {
unsigned long timeout =
timeval_to_jiffies(&vout->v4l2_bufs[index].
timestamp);
if (!timeout) {
/* if timestamp is 0, then default to 30fps */
timeout = vout->start_jiffies +
msecs_to_jiffies(vout->frame_count *
33);
} else { /* Adjust time from time of day to jiffies */
timeout -= vout->start_tod_jiffies;
}
vout->output_timer.expires = timeout;
DPRINTK("QBUF: frame #%u timeout @ %u jiffies, "
"current = %u\n",
vout->frame_count, timeout, jiffies);
add_timer(&vout->output_timer);
vout->state = STATE_STREAM_ON;
vout->frame_count++;
}
spin_unlock_irqrestore(&g_lock, lock_flags);
break;
}
case VIDIOC_DQBUF:
{
struct v4l2_buffer *buf = arg;
int idx;
/* DPRINTK("VIDIOC_DQBUF: q size = %d\n",
queue_size(&vout->done_q));
*/
if ((queue_size(&vout->done_q) == 0) &&
(file->f_flags & O_NONBLOCK)) {
retval = -EAGAIN;
break;
}
if (!wait_event_interruptible_timeout(vout->v4l_bufq,
queue_size(&vout->
done_q)
!= 0, 2 * HZ)) {
printk("VIDIOC_DQBUF: timeout\n");
retval = -ETIME;
break;
} else if (signal_pending(current)) {
printk("VIDIOC_DQBUF: interrupt received\n");
vout->state = STATE_STREAM_STOPPING;
retval = -ERESTARTSYS;
break;
}
idx = dequeue_buf(&vout->done_q);
if (idx == -1) { /* No frame free */
printk
("VIDIOC_DQBUF: no free buffers, returning\n");
retval = -EAGAIN;
break;
}
if ((vout->v4l2_bufs[idx].flags & V4L2_BUF_FLAG_DONE) ==
0)
printk
("VIDIOC_DQBUF: buffer in done q, but not "
"flagged as done\n");
vout->v4l2_bufs[idx].flags = 0;
memcpy(buf, &(vout->v4l2_bufs[idx]), sizeof(*buf));
DPRINTK("VIDIOC_DQBUF: %d\n", buf->index);
break;
}
case VIDIOC_STREAMON:
{
struct timeval t;
do_gettimeofday(&t);
vout->start_tod_jiffies =
timeval_to_jiffies(&t) - jiffies;
vout->frame_count = 2;
vout->start_jiffies = jiffies;
DPRINTK("VIDIOC_STREAMON: start time = %u jiffies, "
"tod adjustment = %u\n",
vout->start_jiffies, vout->start_tod_jiffies);
retval = mxc_v4l2out_streamon(vout);
break;
}
case VIDIOC_STREAMOFF:
{
retval = mxc_v4l2out_streamoff(vout);
break;
}
case VIDIOC_G_CTRL:
{
retval = mxc_get_v42lout_control(vout, arg);
break;
}
case VIDIOC_S_CTRL:
{
retval = mxc_set_v42lout_control(vout, arg);
break;
}
case VIDIOC_CROPCAP:
{
struct v4l2_cropcap *cap = arg;
if (cap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
retval = -EINVAL;
break;
}
cap->bounds = vout->crop_bounds[vout->cur_disp_output];
cap->defrect = vout->crop_bounds[vout->cur_disp_output];
retval = 0;
break;
}
case VIDIOC_G_CROP:
{
struct v4l2_crop *crop = arg;
if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
retval = -EINVAL;
break;
}
crop->c = vout->crop_current;
break;
}
case VIDIOC_S_CROP:
{
struct v4l2_crop *crop = arg;
struct v4l2_rect *b =
&(vout->crop_bounds[vout->cur_disp_output]);
if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
retval = -EINVAL;
break;
}
if (crop->c.height < 0) {
retval = -EINVAL;
break;
}
if (crop->c.width < 0) {
retval = -EINVAL;
break;
}
if (crop->c.top < b->top)
crop->c.top = b->top;
if (crop->c.top > b->top + b->height)
crop->c.top = b->top + b->height;
if (crop->c.height > b->top - crop->c.top + b->height)
crop->c.height =
b->top - crop->c.top + b->height;
if (crop->c.left < b->left)
crop->c.top = b->left;
if (crop->c.left > b->left + b->width)
crop->c.top = b->left + b->width;
if (crop->c.width > b->left - crop->c.left + b->width)
crop->c.width =
b->left - crop->c.left + b->width;
/* stride line limitation */
crop->c.height -= crop->c.height % 8;
crop->c.width -= crop->c.width % 8;
vout->crop_current = crop->c;
vout->sdc_fg_buf_size = vout->crop_current.width *
vout->crop_current.height;
vout->sdc_fg_buf_size *=
fmt_to_bpp(SDC_FG_FB_FORMAT) / 8;
/* Free previously allocated buffer */
if (vout->display_bufs[0] != NULL) {
mxc_free_buffers(vout->display_bufs, 2);
}
if ((retval = mxc_allocate_buffers(vout->display_bufs,
2,
vout->
sdc_fg_buf_size)) <
0) {
DPRINTK("unable to allocate SDC FG buffers\n");
retval = -ENOMEM;
break;
}
break;
}
case VIDIOC_ENUMOUTPUT:
{
struct v4l2_output *output = arg;
if ((output->index >= 4) ||
(vout->output_enabled[output->index] == false)) {
retval = -EINVAL;
break;
}
if (output->index < 3) {
*output = mxc_outputs[MXC_V4L2_OUT_2_ADC];
output->name[4] = '0' + output->index;
} else {
*output = mxc_outputs[MXC_V4L2_OUT_2_SDC];
}
break;
}
case VIDIOC_G_OUTPUT:
{
int *p_output_num = arg;
*p_output_num = vout->cur_disp_output;
break;
}
case VIDIOC_S_OUTPUT:
{
int *p_output_num = arg;
if ((*p_output_num >= 4) ||
(vout->output_enabled[*p_output_num] == false)) {
retval = -EINVAL;
break;
}
if (vout->state != STATE_STREAM_OFF) {
retval = -EBUSY;
break;
}
vout->cur_disp_output = *p_output_num;
break;
}
case VIDIOC_ENUM_FMT:
case VIDIOC_TRY_FMT:
case VIDIOC_QUERYCTRL:
case VIDIOC_G_PARM:
case VIDIOC_ENUMSTD:
case VIDIOC_G_STD:
case VIDIOC_S_STD:
case VIDIOC_G_TUNER:
case VIDIOC_S_TUNER:
case VIDIOC_G_FREQUENCY:
case VIDIOC_S_FREQUENCY:
default:
retval = -EINVAL;
break;
}
up(&vout->busy_lock);
return retval;
}