rk312x lcdc: if bcsh is disable and rgb output, close yuv2rgb and rgb2yuv.

Signed-off-by: xzj<xzj@rock-chips.com>

diff --git a/drivers/video/rockchip/lcdc/rk312x_lcdc.c b/drivers/video/rockchip/lcdc/rk312x_lcdc.c
index f8d6a0b5436df39d0190230f961bb86abe14489c..68a9dfe5a991f0ad9800eda88c60311f0b19f135 100755 (executable)
--- a/drivers/video/rockchip/lcdc/rk312x_lcdc.c
+++ b/drivers/video/rockchip/lcdc/rk312x_lcdc.c
@@ -1029,6 +1029,7 @@ static int rk312x_lcdc_set_scaler(struct rk_lcdc_driver *dev_drv,
 static void rk312x_lcdc_select_bcsh(struct rk_lcdc_driver *dev_drv,
                                    struct lcdc_device *lcdc_dev)
 {
+       u32 bcsh_ctrl;
        if (dev_drv->overlay_mode == VOP_YUV_DOMAIN) {
                if (dev_drv->output_color == COLOR_YCBCR)/* bypass */
                        lcdc_msk_reg(lcdc_dev, BCSH_CTRL,
@@ -1043,9 +1044,15 @@ static void rk312x_lcdc_select_bcsh(struct rk_lcdc_driver *dev_drv,
                             v_BCSH_R2Y_EN(0));
        } else {        /* overlay_mode=VOP_RGB_DOMAIN */
                if (dev_drv->output_color == COLOR_RGB) /* bypass */
-                       lcdc_msk_reg(lcdc_dev, BCSH_CTRL,
-                                    m_BCSH_R2Y_EN | m_BCSH_Y2R_EN,
-                                    v_BCSH_R2Y_EN(1) | v_BCSH_Y2R_EN(1));
+                       bcsh_ctrl = lcdc_readl(lcdc_dev, BCSH_CTRL);
+                       if(bcsh_ctrl&m_BCSH_EN==1)/*bcsh enabled*/
+                               lcdc_msk_reg(lcdc_dev, BCSH_CTRL,
+                                       m_BCSH_R2Y_EN | m_BCSH_Y2R_EN,
+                                       v_BCSH_R2Y_EN(1) | v_BCSH_Y2R_EN(1));
+                       else/*bcsh disabled*/
+                               lcdc_msk_reg(lcdc_dev, BCSH_CTRL,
+                                       m_BCSH_R2Y_EN | m_BCSH_Y2R_EN,
+                                       v_BCSH_R2Y_EN(0) | v_BCSH_Y2R_EN(0));
                else    /* RGB2YUV */
                        lcdc_msk_reg(lcdc_dev, BCSH_CTRL,
                                     m_BCSH_R2Y_EN |