MLK-17473-7 drm/imx: dec400d: avoid shadow trigger when bypass dec400d

Do not really do shadow regiters trigger in'dcss_dec400d_shadow_trig()'
when dec400d is bypassed, since in 'dcss_dec400d_bypass()', the shadow
registers have already been triggerd.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>

diff --git a/drivers/gpu/imx/dcss/dcss-dec400d.c b/drivers/gpu/imx/dcss/dcss-dec400d.c
index 0bcd12b..874fd5f 100644 (file)
--- a/drivers/gpu/imx/dcss/dcss-dec400d.c
+++ b/drivers/gpu/imx/dcss/dcss-dec400d.c
@@ -134,6 +134,10 @@ void dcss_dec400d_shadow_trig(struct dcss_soc *dcss)
        uint32_t control;
        struct dcss_dec400d_priv *dec400d = dcss->dec400d_priv;
 
+       /* do nothing */
+       if (dec400d->bypass == true)
+               return;
+
        control = dcss_readl(dec400d->dec400d_reg + DEC400D_CONTROL);
 
        /* Trigger shadow registers */