michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: video_common: Add aligned allocation API

Browse source 
For some hardwares, it is very common that some aligment on the allocated
memory is required. For example, the PxP and eLCDIF of NXP require aligned
buffers so that their performances can be optimal.

Add a new video_buffer_aligned_alloc() API for these needs.

Signed-off-by: Phi Bang Nguyen <phibang.nguyen@nxp.com>
This commit is contained in:
Phi Bang Nguyen 2024-04-23 14:33:31 +02:00 • committed by Anas Nashif
commit de29ffb033
2 changed files with 18 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

9
drivers/video/video_common.c
View file

@ -19,7 +19,7 @@ struct mem_block {
static struct mem_block video_block[CONFIG_VIDEO_BUFFER_POOL_NUM_MAX];
struct video_buffer *video_buffer_alloc(size_t size)
struct video_buffer *video_buffer_aligned_alloc(size_t size, size_t align)
{
struct video_buffer *vbuf = NULL;
struct mem_block *block;
@ -39,7 +39,7 @@ struct video_buffer *video_buffer_alloc(size_t size)
}
/* Alloc buffer memory */
block->data = k_heap_alloc(&video_buffer_pool, size, K_FOREVER);
block->data = k_heap_aligned_alloc(&video_buffer_pool, align, size, K_FOREVER);
if (block->data == NULL) {
return NULL;
}
@ -51,6 +51,11 @@ struct video_buffer *video_buffer_alloc(size_t size)
return vbuf;
}
struct video_buffer *video_buffer_alloc(size_t size)
{
return video_buffer_aligned_alloc(size, sizeof(void *));
}
void video_buffer_release(struct video_buffer *vbuf)
{
struct mem_block *block = NULL;