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[media] v4l: vb2-dma-contig: reorder functions 

Group functions by buffer type.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2012-06-14 10:37:41 -03:00 committed by Mauro Carvalho Chehab
parent 72f86bffbc
commit 40d8b7669b
1 changed files with 54 additions and 38 deletions
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92
drivers/media/v4l2-core/videobuf2-dma-contig.c
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@ -25,14 +25,56 @@ struct vb2_dc_conf {
struct vb2_dc_buf {
struct device *dev;
void *vaddr;
dma_addr_t dma_addr;
unsigned long size;
struct vm_area_struct *vma;
atomic_t refcount;
dma_addr_t dma_addr;
/* MMAP related */
struct vb2_vmarea_handler handler;
atomic_t refcount;
/* USERPTR related */
struct vm_area_struct *vma;
};
static void vb2_dc_put(void *buf_priv);
/*********************************************/
/* callbacks for all buffers */
/*********************************************/
static void *vb2_dc_cookie(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
return &buf->dma_addr;
}
static void *vb2_dc_vaddr(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
return buf->vaddr;
}
static unsigned int vb2_dc_num_users(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
return atomic_read(&buf->refcount);
}
/*********************************************/
/* callbacks for MMAP buffers */
/*********************************************/
static void vb2_dc_put(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
if (!atomic_dec_and_test(&buf->refcount))
return;
dma_free_coherent(buf->dev, buf->size, buf->vaddr, buf->dma_addr);
kfree(buf);
}
static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size)
{
@ -63,40 +105,6 @@ static void *vb2_dc_alloc(void *alloc_ctx, unsigned long size)
return buf;
}
static void vb2_dc_put(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
if (atomic_dec_and_test(&buf->refcount)) {
dma_free_coherent(buf->dev, buf->size, buf->vaddr,
buf->dma_addr);
kfree(buf);
}
}
static void *vb2_dc_cookie(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
return &buf->dma_addr;
}
static void *vb2_dc_vaddr(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
if (!buf)
return NULL;
return buf->vaddr;
}
static unsigned int vb2_dc_num_users(void *buf_priv)
{
struct vb2_dc_buf *buf = buf_priv;
return atomic_read(&buf->refcount);
}
static int vb2_dc_mmap(void *buf_priv, struct vm_area_struct *vma)
{
struct vb2_dc_buf *buf = buf_priv;
@ -110,6 +118,10 @@ static int vb2_dc_mmap(void *buf_priv, struct vm_area_struct *vma)
&vb2_common_vm_ops, &buf->handler);
}
/*********************************************/
/* callbacks for USERPTR buffers */
/*********************************************/
static void *vb2_dc_get_userptr(void *alloc_ctx, unsigned long vaddr,
unsigned long size, int write)
{
@ -148,6 +160,10 @@ static void vb2_dc_put_userptr(void *mem_priv)
kfree(buf);
}
/*********************************************/
/* DMA CONTIG exported functions */
/*********************************************/
const struct vb2_mem_ops vb2_dma_contig_memops = {
.alloc = vb2_dc_alloc,
.put = vb2_dc_put,