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staging: dt3155v4l syncronize with API changes 

dt3155v4l driver, as in -rc6-next-20100506 compiles, but will
not run properly due to recent changes in the videobuf APIs.

This patch synchronizes some functions that have been copied
from drivers/media/video/videobuf-dma-contig.c (and modified)
with the recent (-rc6 -> -rc6-next-) changes in videobuf layer
especially drivers/media/video/videobuf-dma-contig.c

Signed-off-by: Marin Mitov <mitov@issp.bas.bg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marin Mitov 2010-05-07 11:00:35 +03:00 committed by Greg Kroah-Hartman
parent 0cbd8d9854
commit 717f4a5f55
1 changed files with 36 additions and 32 deletions
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68
drivers/staging/dt3155v4l/dt3155v4l.c
View File

@ -1,3 +1,23 @@
/***************************************************************************
* Copyright (C) 2006-2010 by Marin Mitov *
* mitov@issp.bas.bg *
* *
* 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 <media/v4l2-dev.h>
#include <media/videobuf-core.h>
#include <media/v4l2-ioctl.h>
@ -260,9 +280,11 @@ dt3155_dma_contig_user_get(struct videobuf_dma_contig_memory *mem,
struct vm_area_struct *vma;
unsigned long prev_pfn, this_pfn;
unsigned long pages_done, user_address;
unsigned int offset;
int ret;
mem->size = PAGE_ALIGN(vb->size);
offset = vb->baddr & ~PAGE_MASK;
mem->size = PAGE_ALIGN(vb->size + offset);
mem->is_userptr = 0;
ret = -EINVAL;
@ -285,7 +307,7 @@ dt3155_dma_contig_user_get(struct videobuf_dma_contig_memory *mem,
break;
if (pages_done == 0)
mem->dma_handle = this_pfn << PAGE_SHIFT;
mem->dma_handle = (this_pfn << PAGE_SHIFT) + offset;
else if (this_pfn != (prev_pfn + 1))
ret = -EFAULT;
@ -416,14 +438,14 @@ dt3155_vm_close(struct vm_area_struct *vma)
struct videobuf_queue *q = map->q;
int i;
dev_dbg(map->q->dev, "vm_close %p [count=%u,vma=%08lx-%08lx]\n",
dev_dbg(q->dev, "vm_close %p [count=%u,vma=%08lx-%08lx]\n",
map, map->count, vma->vm_start, vma->vm_end);
map->count--;
if (0 == map->count) {
struct videobuf_dma_contig_memory *mem;
dev_dbg(map->q->dev, "munmap %p q=%p\n", map, q);
dev_dbg(q->dev, "munmap %p q=%p\n", map, q);
mutex_lock(&q->vb_lock);
/* We need first to cancel streams, before unmapping */
@ -450,7 +472,7 @@ dt3155_vm_close(struct vm_area_struct *vma)
/* vfree is not atomic - can't be
called with IRQ's disabled
*/
dev_dbg(map->q->dev, "buf[%d] freeing %p\n",
dev_dbg(q->dev, "buf[%d] freeing %p\n",
i, mem->vaddr);
dt3155_free_buffer(q->dev, mem->size,
@ -475,51 +497,33 @@ static const struct vm_operations_struct dt3155_vm_ops = {
/* same as videobuf_mmap_mapper(), but allocates from the pool */
static int
dt3155_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
dt3155_mmap_mapper(struct videobuf_queue *q, struct videobuf_buffer *buf,
struct vm_area_struct *vma)
{
struct videobuf_dma_contig_memory *mem;
struct videobuf_mapping *map;
unsigned int first;
int retval;
unsigned long size, offset = vma->vm_pgoff << PAGE_SHIFT;
unsigned long size;
dev_dbg(q->dev, "%s\n", __func__);
if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED))
return -EINVAL;
/* look for first buffer to map */
for (first = 0; first < VIDEO_MAX_FRAME; first++) {
if (!q->bufs[first])
continue;
if (V4L2_MEMORY_MMAP != q->bufs[first]->memory)
continue;
if (q->bufs[first]->boff == offset)
break;
}
if (VIDEO_MAX_FRAME == first) {
dev_dbg(q->dev, "invalid user space offset [offset=0x%lx]\n",
offset);
return -EINVAL;
}
/* create mapping + update buffer list */
map = kzalloc(sizeof(struct videobuf_mapping), GFP_KERNEL);
if (!map)
return -ENOMEM;
q->bufs[first]->map = map;
buf->map = map;
map->start = vma->vm_start;
map->end = vma->vm_end;
map->q = q;
q->bufs[first]->baddr = vma->vm_start;
buf->baddr = vma->vm_start;
mem = q->bufs[first]->priv;
mem = buf->priv;
BUG_ON(!mem);
MAGIC_CHECK(mem->magic, MAGIC_DC_MEM);
mem->size = PAGE_ALIGN(q->bufs[first]->bsize);
mem->size = PAGE_ALIGN(buf->bsize);
mem->vaddr = dt3155_alloc_buffer(q->dev, mem->size,
&mem->dma_handle, GFP_KERNEL);
if (!mem->vaddr) {
@ -552,8 +556,8 @@ dt3155_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma)
dev_dbg(q->dev, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n",
map, q, vma->vm_start, vma->vm_end,
(long int) q->bufs[first]->bsize,
vma->vm_pgoff, first);
(long int)buf->bsize,
vma->vm_pgoff, buf->i);
dt3155_vm_open(vma);