eb500df22c
There are two modprobe parameters for VBI that aren't used anywhere (one for debug, the other one related to the buffer size). Get rid of them! Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
|
|
em28xx-vbi.c - VBI driver for em28xx
|
|
|
|
Copyright (C) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
|
|
|
|
This work was sponsored by EyeMagnet Limited.
|
|
|
|
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., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301, USA.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/init.h>
|
|
|
|
#include "em28xx.h"
|
|
#include "em28xx-v4l.h"
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
static int vbi_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
|
|
unsigned int *nbuffers, unsigned int *nplanes,
|
|
unsigned int sizes[], void *alloc_ctxs[])
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vq);
|
|
struct em28xx_v4l2 *v4l2 = dev->v4l2;
|
|
unsigned long size;
|
|
|
|
if (fmt)
|
|
size = fmt->fmt.pix.sizeimage;
|
|
else
|
|
size = v4l2->vbi_width * v4l2->vbi_height * 2;
|
|
|
|
if (0 == *nbuffers)
|
|
*nbuffers = 32;
|
|
if (*nbuffers < 2)
|
|
*nbuffers = 2;
|
|
if (*nbuffers > 32)
|
|
*nbuffers = 32;
|
|
|
|
*nplanes = 1;
|
|
sizes[0] = size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vbi_buffer_prepare(struct vb2_buffer *vb)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct em28xx_v4l2 *v4l2 = dev->v4l2;
|
|
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
|
unsigned long size;
|
|
|
|
size = v4l2->vbi_width * v4l2->vbi_height * 2;
|
|
|
|
if (vb2_plane_size(vb, 0) < size) {
|
|
printk(KERN_INFO "%s data will not fit into plane (%lu < %lu)\n",
|
|
__func__, vb2_plane_size(vb, 0), size);
|
|
return -EINVAL;
|
|
}
|
|
vb2_set_plane_payload(&buf->vb, 0, size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
vbi_buffer_queue(struct vb2_buffer *vb)
|
|
{
|
|
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
|
|
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
|
|
unsigned long flags = 0;
|
|
|
|
buf->mem = vb2_plane_vaddr(vb, 0);
|
|
buf->length = vb2_plane_size(vb, 0);
|
|
|
|
spin_lock_irqsave(&dev->slock, flags);
|
|
list_add_tail(&buf->list, &vbiq->active);
|
|
spin_unlock_irqrestore(&dev->slock, flags);
|
|
}
|
|
|
|
|
|
struct vb2_ops em28xx_vbi_qops = {
|
|
.queue_setup = vbi_queue_setup,
|
|
.buf_prepare = vbi_buffer_prepare,
|
|
.buf_queue = vbi_buffer_queue,
|
|
.start_streaming = em28xx_start_analog_streaming,
|
|
.stop_streaming = em28xx_stop_vbi_streaming,
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
|
.wait_finish = vb2_ops_wait_finish,
|
|
};
|