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fbdev: sh_mobile_lcdc: use dma_mmap_coherent 

fb_mmap() implemented in fbmem.c uses smem_start as the physical
address of the frame buffer.  In the sh_mobile_lcdc driver, the
smem_start is a dma_addr_t that is not a physical address when IOMMU is
enabled.  dma_mmap_coherent() maps the address correctly.

Signed-off-by: Hideki EIRAKU <hdk@igel.co.jp>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Hideki EIRAKU 2012-08-16 19:13:20 +09:00 committed by Laurent Pinchart
parent f4a75d2eb7
commit bf10a53765
1 changed files with 20 additions and 0 deletions
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20
drivers/video/sh_mobile_lcdcfb.c
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@ -1614,6 +1614,15 @@ static int sh_mobile_lcdc_overlay_blank(int blank, struct fb_info *info)
return 1;
}
static int
sh_mobile_lcdc_overlay_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct sh_mobile_lcdc_overlay *ovl = info->par;
return dma_mmap_coherent(ovl->channel->lcdc->dev, vma, ovl->fb_mem,
ovl->dma_handle, ovl->fb_size);
}
static struct fb_ops sh_mobile_lcdc_overlay_ops = {
.owner = THIS_MODULE,
.fb_read = fb_sys_read,
@ -1626,6 +1635,7 @@ static struct fb_ops sh_mobile_lcdc_overlay_ops = {
.fb_ioctl = sh_mobile_lcdc_overlay_ioctl,
.fb_check_var = sh_mobile_lcdc_overlay_check_var,
.fb_set_par = sh_mobile_lcdc_overlay_set_par,
.fb_mmap = sh_mobile_lcdc_overlay_mmap,
};
static void
@ -2093,6 +2103,15 @@ static int sh_mobile_lcdc_blank(int blank, struct fb_info *info)
return 0;
}
static int
sh_mobile_lcdc_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct sh_mobile_lcdc_chan *ch = info->par;
return dma_mmap_coherent(ch->lcdc->dev, vma, ch->fb_mem,
ch->dma_handle, ch->fb_size);
}
static struct fb_ops sh_mobile_lcdc_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = sh_mobile_lcdc_setcolreg,
@ -2108,6 +2127,7 @@ static struct fb_ops sh_mobile_lcdc_ops = {
.fb_release = sh_mobile_lcdc_release,
.fb_check_var = sh_mobile_lcdc_check_var,
.fb_set_par = sh_mobile_lcdc_set_par,
.fb_mmap = sh_mobile_lcdc_mmap,
};
static void