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-rw-r--r--drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index 9f6e234e7029..eae9370225df 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -63,7 +63,11 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
struct videomode vm;
unsigned long prate;
unsigned int cfg;
- int div;
+ int div, ret;
+
+ ret = clk_prepare_enable(crtc->dc->hlcdc->sys_clk);
+ if (ret)
+ return;
vm.vfront_porch = adj->crtc_vsync_start - adj->crtc_vdisplay;
vm.vback_porch = adj->crtc_vtotal - adj->crtc_vsync_end;
@@ -119,6 +123,8 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO |
ATMEL_HLCDC_GUARDTIME_MASK,
cfg);
+
+ clk_disable_unprepare(crtc->dc->hlcdc->sys_clk);
}
static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *crtc,