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path: root/drivers/video/omap2/omapfb/omapfb-main.c
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Diffstat (limited to 'drivers/video/omap2/omapfb/omapfb-main.c')
-rw-r--r--drivers/video/omap2/omapfb/omapfb-main.c62
1 files changed, 54 insertions, 8 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index 4a0588022b33..eb4338bbaa2b 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -1019,36 +1019,48 @@ err:
* DO NOT MODIFY PAR */
static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
int r;
DBG("check_var(%d)\n", FB2OFB(fbi)->id);
+ omapfb_get_mem_region(ofbi->region);
+
r = check_fb_var(fbi, var);
+ omapfb_put_mem_region(ofbi->region);
+
return r;
}
/* set the video mode according to info->var */
static int omapfb_set_par(struct fb_info *fbi)
{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
int r;
DBG("set_par(%d)\n", FB2OFB(fbi)->id);
+ omapfb_get_mem_region(ofbi->region);
+
set_fb_fix(fbi);
r = setup_vrfb_rotation(fbi);
if (r)
- return r;
+ goto out;
r = omapfb_apply_changes(fbi, 0);
+ out:
+ omapfb_put_mem_region(ofbi->region);
+
return r;
}
static int omapfb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *fbi)
{
+ struct omapfb_info *ofbi = FB2OFB(fbi);
struct fb_var_screeninfo new_var;
int r;
@@ -1064,8 +1076,12 @@ static int omapfb_pan_display(struct fb_var_screeninfo *var,
fbi->var = new_var;
+ omapfb_get_mem_region(ofbi->region);
+
r = omapfb_apply_changes(fbi, 0);
+ omapfb_put_mem_region(ofbi->region);
+
return r;
}
@@ -1073,14 +1089,18 @@ static void mmap_user_open(struct vm_area_struct *vma)
{
struct omapfb2_mem_region *rg = vma->vm_private_data;
+ omapfb_get_mem_region(rg);
atomic_inc(&rg->map_count);
+ omapfb_put_mem_region(rg);
}
static void mmap_user_close(struct vm_area_struct *vma)
{
struct omapfb2_mem_region *rg = vma->vm_private_data;
+ omapfb_get_mem_region(rg);
atomic_dec(&rg->map_count);
+ omapfb_put_mem_region(rg);
}
static struct vm_operations_struct mmap_user_ops = {
@@ -1096,6 +1116,7 @@ static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
unsigned long off;
unsigned long start;
u32 len;
+ int r = -EINVAL;
if (vma->vm_end - vma->vm_start == 0)
return 0;
@@ -1103,14 +1124,14 @@ static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
return -EINVAL;
off = vma->vm_pgoff << PAGE_SHIFT;
- rg = ofbi->region;
+ rg = omapfb_get_mem_region(ofbi->region);
start = omapfb_get_region_paddr(ofbi);
len = fix->smem_len;
if (off >= len)
- return -EINVAL;
+ goto error;
if ((vma->vm_end - vma->vm_start + off) > len)
- return -EINVAL;
+ goto error;
off += start;
@@ -1122,11 +1143,23 @@ static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
vma->vm_ops = &mmap_user_ops;
vma->vm_private_data = rg;
if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start, vma->vm_page_prot))
- return -EAGAIN;
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot)) {
+ r = -EAGAIN;
+ goto error;
+ }
+
/* vm_ops.open won't be called for mmap itself. */
atomic_inc(&rg->map_count);
+
+ omapfb_put_mem_region(rg);
+
return 0;
+
+ error:
+ omapfb_put_mem_region(ofbi->region);
+
+ return r;
}
/* Store a single color palette entry into a pseudo palette or the hardware
@@ -1897,6 +1930,7 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
ofbi->region = &fbdev->regions[i];
ofbi->region->id = i;
+ mutex_init(&ofbi->region->mtx);
/* assign these early, so that fb alloc can use them */
ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
@@ -1927,7 +1961,13 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
/* setup fb_infos */
for (i = 0; i < fbdev->num_fbs; i++) {
- r = omapfb_fb_init(fbdev, fbdev->fbs[i]);
+ struct fb_info *fbi = fbdev->fbs[i];
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+
+ omapfb_get_mem_region(ofbi->region);
+ r = omapfb_fb_init(fbdev, fbi);
+ omapfb_put_mem_region(ofbi->region);
+
if (r) {
dev_err(fbdev->dev, "failed to setup fb_info\n");
return r;
@@ -1948,7 +1988,13 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
DBG("framebuffers registered\n");
for (i = 0; i < fbdev->num_fbs; i++) {
- r = omapfb_apply_changes(fbdev->fbs[i], 1);
+ struct fb_info *fbi = fbdev->fbs[i];
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+
+ omapfb_get_mem_region(ofbi->region);
+ r = omapfb_apply_changes(fbi, 1);
+ omapfb_put_mem_region(ofbi->region);
+
if (r) {
dev_err(fbdev->dev, "failed to change mode\n");
return r;

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