diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/mxc_ipuv3_fb.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/video/mxc_ipuv3_fb.c b/drivers/video/mxc_ipuv3_fb.c index 0d0a0a9..8836229 100644 --- a/drivers/video/mxc_ipuv3_fb.c +++ b/drivers/video/mxc_ipuv3_fb.c @@ -13,6 +13,7 @@ #include <common.h> #include <linux/errno.h> +#include <asm/arch/crm_regs.h> #include <asm/global_data.h> #include <linux/string.h> #include <linux/list.h> @@ -568,8 +569,18 @@ err0: void ipuv3_fb_shutdown(void) { - int i; + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT; + u32 reg; + int i; + + /* + * Check if IPU clock was enabled before. Won't access + * IPU registers if clock is not enabled. + */ + reg = readl(&mxc_ccm->CCGR3); + if ((reg & MXC_CCM_CCGR3_IPU1_IPU_MASK) == 0) + return; for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) { struct fb_info *fbi = mxcfb_info[i]; |