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drivers/video: fsl-diu-fb: merge fsl_diu_alloc() into map_video_memory()

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Functions fsl_diu_alloc() and fsl_diu_free() were only being called by
map_video_memory() and unmap_video_memory(), respectively.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Timur Tabi 2011-12-19 16:26:18 -06:00 committed by Florian Tobias Schandinat
parent e09a8c3a42
commit 05342c0bdf
1 changed files with 11 additions and 36 deletions
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47
drivers/video/fsl-diu-fb.c
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@ -461,37 +461,6 @@ static enum fsl_diu_monitor_port fsl_diu_name_to_port(const char *s)
return diu_ops.valid_monitor_port(port);
}
/**
* fsl_diu_alloc - allocate memory for the DIU
* @size: number of bytes to allocate
* @param: returned physical address of memory
*
* This function allocates a physically-contiguous block of memory.
*/
static void *fsl_diu_alloc(size_t size, phys_addr_t *phys)
{
void *virt;
virt = alloc_pages_exact(size, GFP_DMA | __GFP_ZERO);
if (virt)
*phys = virt_to_phys(virt);
return virt;
}
/**
* fsl_diu_free - release DIU memory
* @virt: pointer returned by fsl_diu_alloc()
* @size: number of bytes allocated by fsl_diu_alloc()
*
* This function releases memory allocated by fsl_diu_alloc().
*/
static void fsl_diu_free(void *virt, size_t size)
{
if (virt && size)
free_pages_exact(virt, size);
}
/*
* Workaround for failed writing desc register of planes.
* Needed with MPC5121 DIU rev 2.0 silicon.
@ -875,16 +844,17 @@ static void update_lcdc(struct fb_info *info)
static int map_video_memory(struct fb_info *info)
{
phys_addr_t phys;
u32 smem_len = info->fix.line_length * info->var.yres_virtual;
void *p;
info->screen_base = fsl_diu_alloc(smem_len, &phys);
if (info->screen_base == NULL) {
p = alloc_pages_exact(smem_len, GFP_DMA | __GFP_ZERO);
if (!p) {
dev_err(info->dev, "unable to allocate fb memory\n");
return -ENOMEM;
}
mutex_lock(&info->mm_lock);
info->fix.smem_start = (unsigned long) phys;
info->screen_base = p;
info->fix.smem_start = virt_to_phys(info->screen_base);
info->fix.smem_len = smem_len;
mutex_unlock(&info->mm_lock);
info->screen_size = info->fix.smem_len;
@ -894,12 +864,17 @@ static int map_video_memory(struct fb_info *info)
static void unmap_video_memory(struct fb_info *info)
{
fsl_diu_free(info->screen_base, info->fix.smem_len);
void *p = info->screen_base;
size_t l = info->fix.smem_len;
mutex_lock(&info->mm_lock);
info->screen_base = NULL;
info->fix.smem_start = 0;
info->fix.smem_len = 0;
mutex_unlock(&info->mm_lock);
if (p)
free_pages_exact(p, l);
}
/*