diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index f29e4be..d659ba2 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -603,75 +603,39 @@
 		writel(VIDCON1_VCLK_HOLD, ctx->regs + VIDCON1(0));
 }
 
-static int decon_poweron(struct decon_context *ctx)
+static void decon_enable(struct exynos_drm_crtc *crtc)
 {
-	int ret;
+	struct decon_context *ctx = crtc->ctx;
 
 	if (!ctx->suspended)
-		return 0;
+		return;
 
 	ctx->suspended = false;
 
 	pm_runtime_get_sync(ctx->dev);
 
-	ret = clk_prepare_enable(ctx->pclk);
-	if (ret < 0) {
-		DRM_ERROR("Failed to prepare_enable the pclk [%d]\n", ret);
-		goto pclk_err;
-	}
-
-	ret = clk_prepare_enable(ctx->aclk);
-	if (ret < 0) {
-		DRM_ERROR("Failed to prepare_enable the aclk [%d]\n", ret);
-		goto aclk_err;
-	}
-
-	ret = clk_prepare_enable(ctx->eclk);
-	if  (ret < 0) {
-		DRM_ERROR("Failed to prepare_enable the eclk [%d]\n", ret);
-		goto eclk_err;
-	}
-
-	ret = clk_prepare_enable(ctx->vclk);
-	if  (ret < 0) {
-		DRM_ERROR("Failed to prepare_enable the vclk [%d]\n", ret);
-		goto vclk_err;
-	}
+	clk_prepare_enable(ctx->pclk);
+	clk_prepare_enable(ctx->aclk);
+	clk_prepare_enable(ctx->eclk);
+	clk_prepare_enable(ctx->vclk);
 
 	decon_init(ctx);
 
 	/* if vblank was enabled status, enable it again. */
-	if (test_and_clear_bit(0, &ctx->irq_flags)) {
-		ret = decon_enable_vblank(ctx->crtc);
-		if (ret) {
-			DRM_ERROR("Failed to re-enable vblank [%d]\n", ret);
-			goto err;
-		}
-	}
+	if (test_and_clear_bit(0, &ctx->irq_flags))
+		decon_enable_vblank(ctx->crtc);
 
 	decon_window_resume(ctx);
 
 	decon_apply(ctx);
-
-	return 0;
-
-err:
-	clk_disable_unprepare(ctx->vclk);
-vclk_err:
-	clk_disable_unprepare(ctx->eclk);
-eclk_err:
-	clk_disable_unprepare(ctx->aclk);
-aclk_err:
-	clk_disable_unprepare(ctx->pclk);
-pclk_err:
-	ctx->suspended = true;
-	return ret;
 }
 
-static int decon_poweroff(struct decon_context *ctx)
+static void decon_disable(struct exynos_drm_crtc *crtc)
 {
+	struct decon_context *ctx = crtc->ctx;
+
 	if (ctx->suspended)
-		return 0;
+		return;
 
 	/*
 	 * We need to make sure that all windows are disabled before we
@@ -688,30 +652,11 @@
 	pm_runtime_put_sync(ctx->dev);
 
 	ctx->suspended = true;
-	return 0;
-}
-
-static void decon_dpms(struct exynos_drm_crtc *crtc, int mode)
-{
-	DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
-
-	switch (mode) {
-	case DRM_MODE_DPMS_ON:
-		decon_poweron(crtc->ctx);
-		break;
-	case DRM_MODE_DPMS_STANDBY:
-	case DRM_MODE_DPMS_SUSPEND:
-	case DRM_MODE_DPMS_OFF:
-		decon_poweroff(crtc->ctx);
-		break;
-	default:
-		DRM_DEBUG_KMS("unspecified mode %d\n", mode);
-		break;
-	}
 }
 
 static const struct exynos_drm_crtc_ops decon_crtc_ops = {
-	.dpms = decon_dpms,
+	.enable = decon_enable,
+	.disable = decon_disable,
 	.mode_fixup = decon_mode_fixup,
 	.commit = decon_commit,
 	.enable_vblank = decon_enable_vblank,
@@ -796,7 +741,7 @@
 {
 	struct decon_context *ctx = dev_get_drvdata(dev);
 
-	decon_dpms(ctx->crtc, DRM_MODE_DPMS_OFF);
+	decon_disable(ctx->crtc);
 
 	if (ctx->display)
 		exynos_dpi_remove(ctx->display);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index b7c6d51..644b4b7 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -29,8 +29,8 @@
 	if (exynos_crtc->enabled)
 		return;
 
-	if (exynos_crtc->ops->dpms)
-		exynos_crtc->ops->dpms(exynos_crtc, DRM_MODE_DPMS_ON);
+	if (exynos_crtc->ops->enable)
+		exynos_crtc->ops->enable(exynos_crtc);
 
 	exynos_crtc->enabled = true;
 
@@ -51,8 +51,8 @@
 
 	drm_crtc_vblank_off(crtc);
 
-	if (exynos_crtc->ops->dpms)
-		exynos_crtc->ops->dpms(exynos_crtc, DRM_MODE_DPMS_OFF);
+	if (exynos_crtc->ops->disable)
+		exynos_crtc->ops->disable(exynos_crtc);
 
 	exynos_crtc->enabled = false;
 }
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 86d6894..1c66f65 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -157,7 +157,8 @@
 /*
  * Exynos drm crtc ops
  *
- * @dpms: control device power.
+ * @enable: enable the device
+ * @disable: disable the device
  * @mode_fixup: fix mode data before applying it
  * @commit: set current hw specific display mode to hw.
  * @enable_vblank: specific driver callback for enabling vblank interrupt.
@@ -175,7 +176,8 @@
  */
 struct exynos_drm_crtc;
 struct exynos_drm_crtc_ops {
-	void (*dpms)(struct exynos_drm_crtc *crtc, int mode);
+	void (*enable)(struct exynos_drm_crtc *crtc);
+	void (*disable)(struct exynos_drm_crtc *crtc);
 	bool (*mode_fixup)(struct exynos_drm_crtc *crtc,
 				const struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index b326b31..9661853 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -805,57 +805,35 @@
 	fimd_commit(ctx->crtc);
 }
 
-static int fimd_poweron(struct fimd_context *ctx)
+static void fimd_enable(struct exynos_drm_crtc *crtc)
 {
-	int ret;
+	struct fimd_context *ctx = crtc->ctx;
 
 	if (!ctx->suspended)
-		return 0;
+		return;
 
 	ctx->suspended = false;
 
 	pm_runtime_get_sync(ctx->dev);
 
-	ret = clk_prepare_enable(ctx->bus_clk);
-	if (ret < 0) {
-		DRM_ERROR("Failed to prepare_enable the bus clk [%d]\n", ret);
-		goto bus_clk_err;
-	}
-
-	ret = clk_prepare_enable(ctx->lcd_clk);
-	if  (ret < 0) {
-		DRM_ERROR("Failed to prepare_enable the lcd clk [%d]\n", ret);
-		goto lcd_clk_err;
-	}
+	clk_prepare_enable(ctx->bus_clk);
+	clk_prepare_enable(ctx->lcd_clk);
 
 	/* if vblank was enabled status, enable it again. */
-	if (test_and_clear_bit(0, &ctx->irq_flags)) {
-		ret = fimd_enable_vblank(ctx->crtc);
-		if (ret) {
-			DRM_ERROR("Failed to re-enable vblank [%d]\n", ret);
-			goto enable_vblank_err;
-		}
-	}
+	if (test_and_clear_bit(0, &ctx->irq_flags))
+		fimd_enable_vblank(ctx->crtc);
 
 	fimd_window_resume(ctx);
 
 	fimd_apply(ctx);
-
-	return 0;
-
-enable_vblank_err:
-	clk_disable_unprepare(ctx->lcd_clk);
-lcd_clk_err:
-	clk_disable_unprepare(ctx->bus_clk);
-bus_clk_err:
-	ctx->suspended = true;
-	return ret;
 }
 
-static int fimd_poweroff(struct fimd_context *ctx)
+static void fimd_disable(struct exynos_drm_crtc *crtc)
 {
+	struct fimd_context *ctx = crtc->ctx;
+
 	if (ctx->suspended)
-		return 0;
+		return;
 
 	/*
 	 * We need to make sure that all windows are disabled before we
@@ -870,26 +848,6 @@
 	pm_runtime_put_sync(ctx->dev);
 
 	ctx->suspended = true;
-	return 0;
-}
-
-static void fimd_dpms(struct exynos_drm_crtc *crtc, int mode)
-{
-	DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode);
-
-	switch (mode) {
-	case DRM_MODE_DPMS_ON:
-		fimd_poweron(crtc->ctx);
-		break;
-	case DRM_MODE_DPMS_STANDBY:
-	case DRM_MODE_DPMS_SUSPEND:
-	case DRM_MODE_DPMS_OFF:
-		fimd_poweroff(crtc->ctx);
-		break;
-	default:
-		DRM_DEBUG_KMS("unspecified mode %d\n", mode);
-		break;
-	}
 }
 
 static void fimd_trigger(struct device *dev)
@@ -964,7 +922,8 @@
 }
 
 static const struct exynos_drm_crtc_ops fimd_crtc_ops = {
-	.dpms = fimd_dpms,
+	.enable = fimd_enable,
+	.disable = fimd_disable,
 	.mode_fixup = fimd_mode_fixup,
 	.commit = fimd_commit,
 	.enable_vblank = fimd_enable_vblank,
@@ -1051,7 +1010,7 @@
 {
 	struct fimd_context *ctx = dev_get_drvdata(dev);
 
-	fimd_dpms(ctx->crtc, DRM_MODE_DPMS_OFF);
+	fimd_disable(ctx->crtc);
 
 	fimd_iommu_detach_devices(ctx);
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 63c1536..abe4ee0 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -153,56 +153,38 @@
 	/* TODO. */
 }
 
-static int vidi_power_on(struct vidi_context *ctx, bool enable)
+static void vidi_enable(struct exynos_drm_crtc *crtc)
 {
+	struct vidi_context *ctx = crtc->ctx;
 	struct exynos_drm_plane *plane;
 	int i;
 
-	DRM_DEBUG_KMS("%s\n", __FILE__);
+	mutex_lock(&ctx->lock);
 
-	if (enable != false && enable != true)
-		return -EINVAL;
+	ctx->suspended = false;
 
-	if (enable) {
-		ctx->suspended = false;
+	/* if vblank was enabled status, enable it again. */
+	if (test_and_clear_bit(0, &ctx->irq_flags))
+		vidi_enable_vblank(ctx->crtc);
 
-		/* if vblank was enabled status, enable it again. */
-		if (test_and_clear_bit(0, &ctx->irq_flags))
-			vidi_enable_vblank(ctx->crtc);
-
-		for (i = 0; i < WINDOWS_NR; i++) {
-			plane = &ctx->planes[i];
-			if (plane->enabled)
-				vidi_win_commit(ctx->crtc, i);
-		}
-	} else {
-		ctx->suspended = true;
+	for (i = 0; i < WINDOWS_NR; i++) {
+		plane = &ctx->planes[i];
+		if (plane->enabled)
+			vidi_win_commit(ctx->crtc, i);
 	}
 
-	return 0;
+	mutex_unlock(&ctx->lock);
 }
 
-static void vidi_dpms(struct exynos_drm_crtc *crtc, int mode)
+static void vidi_disable(struct exynos_drm_crtc *crtc)
 {
 	struct vidi_context *ctx = crtc->ctx;
-
-	DRM_DEBUG_KMS("%d\n", mode);
+	struct exynos_drm_plane *plane;
+	int i;
 
 	mutex_lock(&ctx->lock);
 
-	switch (mode) {
-	case DRM_MODE_DPMS_ON:
-		vidi_power_on(ctx, true);
-		break;
-	case DRM_MODE_DPMS_STANDBY:
-	case DRM_MODE_DPMS_SUSPEND:
-	case DRM_MODE_DPMS_OFF:
-		vidi_power_on(ctx, false);
-		break;
-	default:
-		DRM_DEBUG_KMS("unspecified mode %d\n", mode);
-		break;
-	}
+	ctx->suspended = true;
 
 	mutex_unlock(&ctx->lock);
 }
@@ -219,7 +201,8 @@
 }
 
 static const struct exynos_drm_crtc_ops vidi_crtc_ops = {
-	.dpms = vidi_dpms,
+	.enable = vidi_enable,
+	.disable = vidi_disable,
 	.enable_vblank = vidi_enable_vblank,
 	.disable_vblank = vidi_disable_vblank,
 	.win_commit = vidi_win_commit,
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 8874c1f..6bab717 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1027,8 +1027,9 @@
 	}
 }
 
-static void mixer_poweron(struct mixer_context *ctx)
+static void mixer_enable(struct exynos_drm_crtc *crtc)
 {
+	struct mixer_context *ctx = crtc->ctx;
 	struct mixer_resources *res = &ctx->mixer_res;
 
 	mutex_lock(&ctx->mixer_mutex);
@@ -1061,8 +1062,9 @@
 	mixer_window_resume(ctx);
 }
 
-static void mixer_poweroff(struct mixer_context *ctx)
+static void mixer_disable(struct exynos_drm_crtc *crtc)
 {
+	struct mixer_context *ctx = crtc->ctx;
 	struct mixer_resources *res = &ctx->mixer_res;
 
 	mutex_lock(&ctx->mixer_mutex);
@@ -1093,23 +1095,6 @@
 	pm_runtime_put_sync(ctx->dev);
 }
 
-static void mixer_dpms(struct exynos_drm_crtc *crtc, int mode)
-{
-	switch (mode) {
-	case DRM_MODE_DPMS_ON:
-		mixer_poweron(crtc->ctx);
-		break;
-	case DRM_MODE_DPMS_STANDBY:
-	case DRM_MODE_DPMS_SUSPEND:
-	case DRM_MODE_DPMS_OFF:
-		mixer_poweroff(crtc->ctx);
-		break;
-	default:
-		DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
-		break;
-	}
-}
-
 /* Only valid for Mixer version 16.0.33.0 */
 int mixer_check_mode(struct drm_display_mode *mode)
 {
@@ -1131,7 +1116,8 @@
 }
 
 static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
-	.dpms			= mixer_dpms,
+	.enable			= mixer_enable,
+	.disable		= mixer_disable,
 	.enable_vblank		= mixer_enable_vblank,
 	.disable_vblank		= mixer_disable_vblank,
 	.wait_for_vblank	= mixer_wait_for_vblank,