rk3188 lcdc:fix bug in rk3188_lcdc_open/close

	before disable lcdc clk,we must make sure
	the lcdc enter stanby and finish read or write
	the lcdc register。
	Before this commit,some hdmi hotplug crash made
	by thie issue

diff --git a/drivers/video/rockchip/lcdc/rk3188_lcdc.c b/drivers/video/rockchip/lcdc/rk3188_lcdc.c
index 680df62918d8f2130e7a55742459caaa36450cf7..5042067774f2b71950ce36dead785e50dbba4da0 100644 (file)
--- a/drivers/video/rockchip/lcdc/rk3188_lcdc.c
+++ b/drivers/video/rockchip/lcdc/rk3188_lcdc.c
@@ -65,7 +65,7 @@ static int rk3188_lcdc_clk_disable(struct rk3188_lcdc_device *lcdc_dev)
        spin_lock(&lcdc_dev->reg_lock);
        lcdc_dev->clk_on = 0;
        spin_unlock(&lcdc_dev->reg_lock);
-
+       mdelay(25);
        clk_disable(lcdc_dev->dclk);
        clk_disable(lcdc_dev->hclk);
        clk_disable(lcdc_dev->aclk);
@@ -310,6 +310,8 @@ static int rk3188_lcdc_open(struct rk_lcdc_device_driver *dev_drv,int layer_id,b
 
        if((!open) && (!lcdc_dev->atv_layer_cnt))  //when all layer closed,disable clk
        {
+               lcdc_msk_reg(lcdc_dev,INT_STATUS,m_FS_INT_CLEAR,v_FS_INT_CLEAR(1));
+               rk3188_lcdc_reg_update(dev_drv);
                rk3188_lcdc_clk_disable(lcdc_dev);
        }
 
@@ -927,7 +929,6 @@ static int rk3188_lcdc_early_suspend(struct rk_lcdc_device_driver *dev_drv)
                return 0;
        }
 
-       mdelay(25);
        rk3188_lcdc_clk_disable(lcdc_dev);
        return 0;
 }