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Commit 5a037706 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
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V4L/DVB (6255): Convert vivi to use videobuf-vmalloc 



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: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 87b9ad07

drivers/media/video/vivi.c

+15 −29
Original line number Diff line number Diff line
@@ -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)

		if (copy_to_user(vbuf+pos,tmpbuf,wmax*2)!=0)

			dprintk(2,"vivifill copy_to_user failed.\n");

		} else {

			gen_line(tmpbuf,pos,wmax,hmax,h,dev->timestr);

		}

		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;

}