korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-17 17:24:17 +08:00
Code Issues Packages Projects Releases Wiki Activity

V4L/DVB (6255): Convert vivi to use videobuf-vmalloc

Browse Source 
This patch removes the usage of videobuf-dma-sg from vivi driver, using
instead videobuf-vmalloc. This way, vivi will be useful for testing the
newer method. Reverting this patch won't hurt vivi, since both methods
work fine.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2007-08-02 23:31:54 -03:00
parent 87b9ad070c
commit 5a0377060e
1 changed files with 15 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
drivers/media/video/vivi.c
View File

@ -33,7 +33,7 @@
#include <linux/videodev.h>
#endif
#include <linux/interrupt.h>
#include <media/videobuf-dma-sg.h>
#include <media/videobuf-vmalloc.h>
#include <media/v4l2-common.h>
#include <linux/kthread.h>
#include <linux/highmem.h>
@ -145,7 +145,6 @@ struct vivi_buffer {
struct videobuf_buffer vb;
struct vivi_fmt *fmt;
};
struct vivi_dmaqueue {
@ -326,29 +325,22 @@ static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf)
int hmax = buf->vb.height;
int wmax = buf->vb.width;
struct timeval ts;
char *tmpbuf;
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
if (dma->varea) {
tmpbuf=kmalloc (wmax*2, GFP_KERNEL);
} else {
tmpbuf=dma->vmalloc;
}
char *tmpbuf = kmalloc(wmax*2,GFP_KERNEL);
void *vbuf=videobuf_to_vmalloc (&buf->vb);
if (!tmpbuf)
return;
for (h=0;h<hmax;h++) {
if (dma->varea) {
gen_line(tmpbuf,0,wmax,hmax,h,dev->timestr);
/* FIXME: replacing to __copy_to_user */
if (copy_to_user(dma->varea+pos,tmpbuf,wmax*2)!=0)
dprintk(2,"vivifill copy_to_user failed.\n");
} else {
gen_line(tmpbuf,pos,wmax,hmax,h,dev->timestr);
}
gen_line(tmpbuf,0,wmax,hmax,h,dev->timestr);
/* FIXME: replacing to __copy_to_user */
if (copy_to_user(vbuf+pos,tmpbuf,wmax*2)!=0)
dprintk(2,"vivifill copy_to_user failed.\n");
pos += wmax*2;
}
kfree(tmpbuf);
/* Updates stream time */
dev->us+=jiffies_to_usecs(jiffies-dev->jiffies);
@ -371,7 +363,7 @@ static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf)
dev->h,dev->m,dev->s,(dev->us+500)/1000);
dprintk(2,"vivifill at %s: Buffer 0x%08lx size= %d\n",dev->timestr,
(unsigned long)dma->varea,pos);
(unsigned long)tmpbuf,pos);
/* Advice that buffer was filled */
buf->vb.state = STATE_DONE;
@ -610,17 +602,13 @@ buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf)
{
struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
dprintk(1,"%s\n",__FUNCTION__);
if (in_interrupt())
BUG();
videobuf_waiton(&buf->vb,0,0);
videobuf_dma_unmap(vq, dma);
videobuf_dma_free(dma);
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = STATE_NEEDS_INIT;
}
@ -726,7 +714,6 @@ static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb
free_buffer(vq,buf);
}
static struct videobuf_queue_ops vivi_video_qops = {
.buf_setup = buffer_setup,
.buf_prepare = buffer_prepare,
@ -1092,13 +1079,12 @@ static int vivi_open(struct inode *inode, struct file *file)
sprintf(dev->timestr,"%02d:%02d:%02d:%03d",
dev->h,dev->m,dev->s,(dev->us+500)/1000);
videobuf_queue_pci_init(&fh->vb_vidq, &vivi_video_qops,
videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops,
NULL, NULL,
fh->type,
V4L2_FIELD_INTERLACED,
sizeof(struct vivi_buffer),fh);
return 0;
}
@ -1192,7 +1178,7 @@ static const struct file_operations vivi_fops = {
.read = vivi_read,
.poll = vivi_poll,
.ioctl = video_ioctl2, /* V4L2 ioctl handler */
.mmap = vivi_mmap,
.mmap = vivi_mmap,
.llseek = no_llseek,
};