/**
* adf_fbdev_open - default implementation of fbdev open op
*/
int adf_fbdev_open(struct fb_info *info, int user)
{
struct adf_fbdev *fbdev = info->par;
int ret;
mutex_lock(&fbdev->refcount_lock);
if (unlikely(fbdev->refcount == UINT_MAX)) {
ret = -EMFILE;
goto done;
}
if (!fbdev->refcount) {
struct drm_mode_modeinfo mode;
struct fb_videomode fbmode;
struct adf_device *dev = adf_interface_parent(fbdev->intf);
ret = adf_device_attach(dev, fbdev->eng, fbdev->intf);
if (ret < 0 && ret != -EALREADY)
goto done;
ret = adf_fb_alloc(fbdev);
if (ret < 0)
goto done;
adf_interface_current_mode(fbdev->intf, &mode);
adf_modeinfo_to_fb_videomode(&mode, &fbmode);
fb_videomode_to_var(&fbdev->info->var, &fbmode);
adf_fbdev_set_format(fbdev, fbdev->default_format);
adf_fbdev_fill_modelist(fbdev);
}
if (!fbdev_opened_once) {
fbdev_opened_once = true;
} else {
ret = adf_fbdev_post(fbdev);
if (ret < 0) {
if (!fbdev->refcount)
adf_fb_destroy(fbdev);
goto done;
}
}
fbdev->refcount++;
done:
mutex_unlock(&fbdev->refcount_lock);
return ret;
}
/**
* adf_fbdev_open - default implementation of fbdev open op
*/
int adf_fbdev_open(struct fb_info *info, int user)
{
struct adf_fbdev *fbdev = info->par;
int ret;
if (!fbdev->open) {
struct drm_mode_modeinfo mode;
struct fb_videomode fbmode;
struct adf_device *dev = adf_interface_parent(fbdev->intf);
ret = adf_device_attach(dev, fbdev->eng, fbdev->intf);
if (ret < 0 && ret != -EALREADY)
return ret;
ret = adf_fb_alloc(fbdev);
if (ret < 0)
return ret;
adf_interface_current_mode(fbdev->intf, &mode);
adf_modeinfo_to_fb_videomode(&mode, &fbmode);
fb_videomode_to_var(&fbdev->info->var, &fbmode);
adf_fbdev_set_format(fbdev, fbdev->default_format);
adf_fbdev_fill_modelist(fbdev);
}
ret = adf_fbdev_post(fbdev);
if (ret < 0) {
if (!fbdev->open)
adf_fb_destroy(fbdev);
return ret;
}
fbdev->open = true;
return 0;
}
