rk30 fb: add IOCTL and sys interface for overlay control

[firefly-linux-kernel-4.4.55.git] / drivers / video / rockchip / rkfb_sysfs.c

diff --git a/drivers/video/rockchip/rkfb_sysfs.c b/drivers/video/rockchip/rkfb_sysfs.c
index ed73d4366da68151f25860b2cbd60c8fd0fda7cf..17f8fafa746a5b7a24c5a2a64401dd5dcc08fbf1 100644 (file)
--- a/drivers/video/rockchip/rkfb_sysfs.c
+++ b/drivers/video/rockchip/rkfb_sysfs.c
@@ -113,12 +113,52 @@ static ssize_t set_fb_state(struct device *dev,struct device_attribute *attr,
        return count;
 }
 
+static ssize_t show_overlay(struct device *dev,
+               struct device_attribute *attr, char *buf)
+{
+       struct fb_info *fbi = dev_get_drvdata(dev);
+       struct rk_lcdc_device_driver * dev_drv = 
+               (struct rk_lcdc_device_driver * )fbi->par;
+       int ovl;
+       ovl =  dev_drv->ovl_mgr(dev_drv,0,0);
+       if(ovl < 0)
+       {
+               return ovl;
+       }
+
+       return snprintf(buf, PAGE_SIZE, "%s\n",
+               ovl?"win0 on the top of win1":"win1 on the top of win0");
+       
+}
+static ssize_t set_overlay(struct device *dev,struct device_attribute *attr,
+       const char *buf, size_t count)
+{
+       struct fb_info *fbi = dev_get_drvdata(dev);
+       struct rk_lcdc_device_driver * dev_drv = 
+               (struct rk_lcdc_device_driver * )fbi->par;
+       int ovl;
+       int ret;
+       ret = kstrtoint(buf, 0, &ovl);
+       if(ret)
+       {
+               return ret;
+       }
+       ret = dev_drv->ovl_mgr(dev_drv,ovl,1);
+       if(ret < 0)
+       {
+               return ret;
+       }
+
+       return count;
+}
+
 static struct device_attribute rkfb_attrs[] = {
        __ATTR(phys_addr, S_IRUGO, show_phys, NULL),
        __ATTR(virt_addr, S_IRUGO, show_virt, NULL),
        __ATTR(disp_info, S_IRUGO, show_disp_info, NULL),
        __ATTR(screen_info, S_IRUGO, show_screen_info, NULL),
        __ATTR(enable, S_IRUGO | S_IWUSR, show_fb_state, set_fb_state),
+       __ATTR(overlay, S_IRUGO | S_IWUSR, show_overlay, set_overlay),
 };
 
 int rkfb_create_sysfs(struct fb_info *fbi)