static ssize_t store_mirror(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
int mirror;
int r;
struct fb_var_screeninfo new_var;
r = kstrtoint(buf, 0, &mirror);
if (r)
return r;
mirror = !!mirror;
if (!lock_fb_info(fbi))
return -ENODEV;
ofbi->mirror = mirror;
omapfb_get_mem_region(ofbi->region);
memcpy(&new_var, &fbi->var, sizeof(new_var));
r = check_fb_var(fbi, &new_var);
if (r)
goto out;
memcpy(&fbi->var, &new_var, sizeof(fbi->var));
set_fb_fix(fbi);
r = omapfb_apply_changes(fbi, 0);
if (r)
goto out;
r = count;
out:
omapfb_put_mem_region(ofbi->region);
unlock_fb_info(fbi);
return r;
}
static ssize_t store_mirror(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
bool mirror;
int r;
struct fb_var_screeninfo new_var;
mirror = simple_strtoul(buf, NULL, 0);
if (mirror != 0 && mirror != 1)
return -EINVAL;
if (!lock_fb_info(fbi))
return -ENODEV;
ofbi->mirror = mirror;
memcpy(&new_var, &fbi->var, sizeof(new_var));
r = check_fb_var(fbi, &new_var);
if (r)
goto out;
memcpy(&fbi->var, &new_var, sizeof(fbi->var));
set_fb_fix(fbi);
r = omapfb_apply_changes(fbi, 0);
if (r)
goto out;
r = count;
out:
unlock_fb_info(fbi);
return r;
}
static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_device *fbdev = ofbi->fbdev;
struct omapfb2_mem_region *rg;
struct omap_display *display = fb2display(fbi);
int r, i;
size_t size;
if (mi->type > OMAPFB_MEMTYPE_MAX)
return -EINVAL;
size = PAGE_ALIGN(mi->size);
rg = &ofbi->region;
omapfb_lock(fbdev);
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->info.enabled) {
r = -EBUSY;
goto out;
}
}
if (rg->size != size || rg->type != mi->type) {
struct fb_var_screeninfo new_var;
unsigned long old_size = rg->size;
if (display->sync)
display->sync(display);
r = omapfb_realloc_fbmem(fbdev, ofbi->id, size);
if (r)
goto out;
if (old_size != size) {
if (size) {
memcpy(&new_var, &fbi->var, sizeof(new_var));
r = check_fb_var(fbi, &new_var);
if (r < 0)
goto out;
memcpy(&fbi->var, &new_var, sizeof(fbi->var));
set_fb_fix(fbi);
} else {
/*
* Set these explicitly to indicate that the
* plane memory is dealloce'd, the other
* screen parameters in var / fix are invalid.
*/
fbi->fix.smem_start = 0;
fbi->fix.smem_len = 0;
}
}
}
r = 0;
out:
omapfb_unlock(fbdev);
return r;
}