drm/exynos: Pass exynos_drm_manager in manager ops instead of dev

This patch changes the manager ops callbacks from accepting the subdrv
device pointer to taking a pointer to the manager. This will allow us
to move closer to decoupling manager/display from subdrv, and subsequently
decoupling the crtc/plane from the encoder.

Signed-off-by: Sean Paul <[e-mail]>
Signed-off-by: Inki Dae <[e-mail]>

drivers/gpu/drm/exynos/exynos_drm_connector.c

···
 	 * resolution then get max width and height from that driver.
 	 */
 	if (ops && ops->get_max_resol)
-		ops->get_max_resol(manager->dev, &width, &height);
+		ops->get_max_resol(manager, &width, &height);
 
 	return drm_helper_probe_single_connector_modes(connector, width,
 							height);

drivers/gpu/drm/exynos/exynos_drm_drv.h

···
  * @win_enable: enable hardware specific overlay.
  * @win_disable: disable hardware specific overlay.
  */
+struct exynos_drm_manager;
 struct exynos_drm_manager_ops {
-	int (*initialize)(struct device *subdrv_dev,
-			struct drm_device *drm_dev);
-	void (*dpms)(struct device *subdrv_dev, int mode);
-	void (*apply)(struct device *subdrv_dev);
-	void (*mode_fixup)(struct device *subdrv_dev,
+	int (*initialize)(struct exynos_drm_manager *mgr,
+				struct drm_device *drm_dev);
+	void (*dpms)(struct exynos_drm_manager *mgr, int mode);
+	void (*apply)(struct exynos_drm_manager *mgr);
+	void (*mode_fixup)(struct exynos_drm_manager *mgr,
 				struct drm_connector *connector,
 				const struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode);
-	void (*mode_set)(struct device *subdrv_dev, void *mode);
-	void (*get_max_resol)(struct device *subdrv_dev, unsigned int *width,
-				unsigned int *height);
-	void (*commit)(struct device *subdrv_dev);
-	int (*enable_vblank)(struct device *subdrv_dev);
-	void (*disable_vblank)(struct device *subdrv_dev);
-	void (*wait_for_vblank)(struct device *subdrv_dev);
-	void (*win_mode_set)(struct device *subdrv_dev,
+	void (*mode_set)(struct exynos_drm_manager *mgr, void *mode);
+	void (*get_max_resol)(struct exynos_drm_manager *mgr,
+				unsigned int *width, unsigned int *height);
+	void (*commit)(struct exynos_drm_manager *mgr);
+	int (*enable_vblank)(struct exynos_drm_manager *mgr);
+	void (*disable_vblank)(struct exynos_drm_manager *mgr);
+	void (*wait_for_vblank)(struct exynos_drm_manager *mgr);
+	void (*win_mode_set)(struct exynos_drm_manager *mgr,
 				struct exynos_drm_overlay *overlay);
-	void (*win_commit)(struct device *subdrv_dev, int zpos);
-	void (*win_enable)(struct device *subdrv_dev, int zpos);
-	void (*win_disable)(struct device *subdrv_dev, int zpos);
+	void (*win_commit)(struct exynos_drm_manager *mgr, int zpos);
+	void (*win_enable)(struct exynos_drm_manager *mgr, int zpos);
+	void (*win_disable)(struct exynos_drm_manager *mgr, int zpos);
 };
 
 /*
···
  *	these callbacks should be set by specific drivers such fimd
  *	or hdmi driver and are used to control display devices such as
  *	analog tv, digital tv and lcd panel and also get timing data for them.
+ * @ctx: A pointer to the manager's implementation specific context
  */
 struct exynos_drm_manager {
 	struct device *dev;
 	int pipe;
 	struct exynos_drm_manager_ops *ops;
 	struct exynos_drm_display_ops *display_ops;
+	void *ctx;
 };
 
 struct exynos_drm_g2d_private {

drivers/gpu/drm/exynos/exynos_drm_encoder.c

···
 	case DRM_MODE_DPMS_ON:
 		if (manager_ops && manager_ops->apply)
 			if (!exynos_encoder->updated)
-				manager_ops->apply(manager->dev);
+				manager_ops->apply(manager);
 
 		exynos_drm_connector_power(encoder, mode);
 		exynos_encoder->dpms = mode;
···
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		if (connector->encoder == encoder)
 			if (manager_ops && manager_ops->mode_fixup)
-				manager_ops->mode_fixup(manager->dev, connector,
+				manager_ops->mode_fixup(manager, connector,
 							mode, adjusted_mode);
 	}
 
···
 			manager_ops = manager->ops;
 
 			if (manager_ops && manager_ops->mode_set)
-				manager_ops->mode_set(manager->dev,
-							adjusted_mode);
+				manager_ops->mode_set(manager, adjusted_mode);
 
 			exynos_encoder->old_crtc = encoder->crtc;
 		}
···
 	struct exynos_drm_manager_ops *manager_ops = manager->ops;
 
 	if (manager_ops && manager_ops->commit)
-		manager_ops->commit(manager->dev);
+		manager_ops->commit(manager);
 
 	/*
 	 * this will avoid one issue that overlay data is updated to
···
 		 *	real hardware.
 		 */
 		if (ops->wait_for_vblank)
-			ops->wait_for_vblank(exynos_encoder->manager->dev);
+			ops->wait_for_vblank(exynos_encoder->manager);
 	}
 }
 
···
 	drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs);
 
 	if (manager->ops && manager->ops->initialize) {
-		ret = manager->ops->initialize(manager->dev, dev);
+		ret = manager->ops->initialize(manager, dev);
 		if (ret) {
 			DRM_ERROR("Manager initialize failed %d\n", ret);
 			goto error;
···
 		return;
 
 	if (manager_ops->enable_vblank)
-		manager_ops->enable_vblank(manager->dev);
+		manager_ops->enable_vblank(manager);
 }
 
 void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data)
···
 		return;
 
 	if (manager_ops->disable_vblank)
-		manager_ops->disable_vblank(manager->dev);
+		manager_ops->disable_vblank(manager);
 }
 
 void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data)
···
 	int mode = *(int *)data;
 
 	if (manager_ops && manager_ops->dpms)
-		manager_ops->dpms(manager->dev, mode);
+		manager_ops->dpms(manager, mode);
 
 	/*
 	 * if this condition is ok then it means that the crtc is already
···
 	struct exynos_drm_overlay *overlay = data;
 
 	if (manager_ops && manager_ops->win_mode_set)
-		manager_ops->win_mode_set(manager->dev, overlay);
+		manager_ops->win_mode_set(manager, overlay);
 }
 
 void exynos_drm_encoder_plane_commit(struct drm_encoder *encoder, void *data)
···
 		zpos = *(int *)data;
 
 	if (manager_ops && manager_ops->win_commit)
-		manager_ops->win_commit(manager->dev, zpos);
+		manager_ops->win_commit(manager, zpos);
 }
 
 void exynos_drm_encoder_plane_enable(struct drm_encoder *encoder, void *data)
···
 		zpos = *(int *)data;
 
 	if (manager_ops && manager_ops->win_enable)
-		manager_ops->win_enable(manager->dev, zpos);
+		manager_ops->win_enable(manager, zpos);
 }
 
 void exynos_drm_encoder_plane_disable(struct drm_encoder *encoder, void *data)
···
 		zpos = *(int *)data;
 
 	if (manager_ops && manager_ops->win_disable)
-		manager_ops->win_disable(manager->dev, zpos);
+		manager_ops->win_disable(manager, zpos);
 }

drivers/gpu/drm/exynos/exynos_drm_fimd.c

···
 /* FIMD has totally five hardware windows. */
 #define WINDOWS_NR	5
 
-#define get_fimd_context(dev)	platform_get_drvdata(to_platform_device(dev))
+#define get_fimd_manager(mgr)	platform_get_drvdata(to_platform_device(dev))
 
 struct fimd_driver_data {
 	unsigned int timing_base;
···
 
 struct fimd_context {
 	struct exynos_drm_subdrv	subdrv;
+	struct device			*dev;
 	struct drm_device		*drm_dev;
 	int				irq;
 	struct drm_crtc			*crtc;
···
 
 static void *fimd_get_panel(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
+	struct fimd_context *ctx = mgr->ctx;
 
 	return &ctx->panel;
 }
···
 	.power_on = fimd_display_power_on,
 };
 
-static int fimd_mgr_initialize(struct device *subdrv_dev,
-		struct drm_device *drm_dev)
+static int fimd_mgr_initialize(struct exynos_drm_manager *mgr,
+			struct drm_device *drm_dev)
 {
-	struct fimd_context *ctx = get_fimd_context(subdrv_dev);
+	struct fimd_context *ctx = mgr->ctx;
 
 	ctx->drm_dev = drm_dev;
 
 	return 0;
 }
 
-static void fimd_dpms(struct device *subdrv_dev, int mode)
+static void fimd_dpms(struct exynos_drm_manager *mgr, int mode)
 {
-	struct fimd_context *ctx = get_fimd_context(subdrv_dev);
+	struct fimd_context *ctx = mgr->ctx;
 
 	DRM_DEBUG_KMS("%d\n", mode);
 
···
 		 * clk_enable could be called double time.
 		 */
 		if (ctx->suspended)
-			pm_runtime_get_sync(subdrv_dev);
+			pm_runtime_get_sync(ctx->dev);
 		break;
 	case DRM_MODE_DPMS_STANDBY:
 	case DRM_MODE_DPMS_SUSPEND:
 	case DRM_MODE_DPMS_OFF:
 		if (!ctx->suspended)
-			pm_runtime_put_sync(subdrv_dev);
+			pm_runtime_put_sync(ctx->dev);
 		break;
 	default:
 		DRM_DEBUG_KMS("unspecified mode %d\n", mode);
···
 	mutex_unlock(&ctx->lock);
 }
 
-static void fimd_apply(struct device *subdrv_dev)
+static void fimd_apply(struct exynos_drm_manager *mgr)
 {
-	struct fimd_context *ctx = get_fimd_context(subdrv_dev);
-	struct exynos_drm_manager *mgr = ctx->subdrv.manager;
+	struct fimd_context *ctx = mgr->ctx;
 	struct exynos_drm_manager_ops *mgr_ops = mgr->ops;
 	struct fimd_win_data *win_data;
 	int i;
···
 	for (i = 0; i < WINDOWS_NR; i++) {
 		win_data = &ctx->win_data[i];
 		if (win_data->enabled && (mgr_ops && mgr_ops->win_commit))
-			mgr_ops->win_commit(subdrv_dev, i);
+			mgr_ops->win_commit(mgr, i);
 	}
 
 	if (mgr_ops && mgr_ops->commit)
-		mgr_ops->commit(subdrv_dev);
+		mgr_ops->commit(mgr);
 }
 
-static void fimd_commit(struct device *dev)
+static void fimd_commit(struct exynos_drm_manager *mgr)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	struct exynos_drm_panel_info *panel = &ctx->panel;
 	struct videomode *vm = &panel->vm;
 	struct fimd_driver_data *driver_data;
···
 	writel(val, ctx->regs + VIDCON0);
 }
 
-static int fimd_enable_vblank(struct device *dev)
+static int fimd_enable_vblank(struct exynos_drm_manager *mgr)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	u32 val;
 
 	if (ctx->suspended)
···
 	return 0;
 }
 
-static void fimd_disable_vblank(struct device *dev)
+static void fimd_disable_vblank(struct exynos_drm_manager *mgr)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	u32 val;
 
 	if (ctx->suspended)
···
 	}
 }
 
-static void fimd_wait_for_vblank(struct device *dev)
+static void fimd_wait_for_vblank(struct exynos_drm_manager *mgr)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 
 	if (ctx->suspended)
 		return;
···
 		DRM_DEBUG_KMS("vblank wait timed out.\n");
 }
 
-static void fimd_win_mode_set(struct device *dev,
-			      struct exynos_drm_overlay *overlay)
+static void fimd_win_mode_set(struct exynos_drm_manager *mgr,
+			struct exynos_drm_overlay *overlay)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	struct fimd_win_data *win_data;
 	int win;
 	unsigned long offset;
 
 	if (!overlay) {
-		dev_err(dev, "overlay is NULL\n");
+		DRM_ERROR("overlay is NULL\n");
 		return;
 	}
 
···
 			overlay->fb_width, overlay->crtc_width);
 }
 
-static void fimd_win_set_pixfmt(struct device *dev, unsigned int win)
+static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
 	struct fimd_win_data *win_data = &ctx->win_data[win];
 	unsigned long val;
 
···
 	writel(val, ctx->regs + WINCON(win));
 }
 
-static void fimd_win_set_colkey(struct device *dev, unsigned int win)
+static void fimd_win_set_colkey(struct fimd_context *ctx, unsigned int win)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
 	unsigned int keycon0 = 0, keycon1 = 0;
 
 	keycon0 = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F |
···
 	writel(val, ctx->regs + reg);
 }
 
-static void fimd_win_commit(struct device *dev, int zpos)
+static void fimd_win_commit(struct exynos_drm_manager *mgr, int zpos)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	struct fimd_win_data *win_data;
 	int win = zpos;
 	unsigned long val, alpha, size;
···
 		DRM_DEBUG_KMS("osd size = 0x%x\n", (unsigned int)val);
 	}
 
-	fimd_win_set_pixfmt(dev, win);
+	fimd_win_set_pixfmt(ctx, win);
 
 	/* hardware window 0 doesn't support color key. */
 	if (win != 0)
-		fimd_win_set_colkey(dev, win);
+		fimd_win_set_colkey(ctx, win);
 
 	/* wincon */
 	val = readl(ctx->regs + WINCON(win));
···
 	win_data->enabled = true;
 }
 
-static void fimd_win_disable(struct device *dev, int zpos)
+static void fimd_win_disable(struct exynos_drm_manager *mgr, int zpos)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	struct fimd_win_data *win_data;
 	int win = zpos;
 	u32 val;
···
 
 static void fimd_window_suspend(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	struct fimd_win_data *win_data;
 	int i;
 
 	for (i = 0; i < WINDOWS_NR; i++) {
 		win_data = &ctx->win_data[i];
 		win_data->resume = win_data->enabled;
-		fimd_win_disable(dev, i);
+		fimd_win_disable(mgr, i);
 	}
-	fimd_wait_for_vblank(dev);
+	fimd_wait_for_vblank(mgr);
 }
 
 static void fimd_window_resume(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
+	struct fimd_context *ctx = mgr->ctx;
 	struct fimd_win_data *win_data;
 	int i;
 
···
 	}
 }
 
-static int fimd_activate(struct fimd_context *ctx, bool enable)
+static int fimd_activate(struct exynos_drm_manager *mgr, bool enable)
 {
+	struct fimd_context *ctx = mgr->ctx;
 	struct device *dev = ctx->subdrv.dev;
+
 	if (enable) {
 		int ret;
 
···
 
 		/* if vblank was enabled status, enable it again. */
 		if (test_and_clear_bit(0, &ctx->irq_flags))
-			fimd_enable_vblank(dev);
+			fimd_enable_vblank(mgr);
 
 		fimd_window_resume(dev);
 	} else {
···
 	if (!ctx)
 		return -ENOMEM;
 
+	ctx->dev = dev;
+
 	ret = fimd_get_platform_data(ctx, dev);
 	if (ret)
 		return ret;
···
 	init_waitqueue_head(&ctx->wait_vsync_queue);
 	atomic_set(&ctx->wait_vsync_event, 0);
 
+	fimd_manager.ctx = ctx;
+
 	subdrv = &ctx->subdrv;
 
 	subdrv->dev = dev;
···
 
 	mutex_init(&ctx->lock);
 
-	platform_set_drvdata(pdev, ctx);
+	platform_set_drvdata(pdev, &fimd_manager);
 
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
···
 static int fimd_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct fimd_context *ctx = platform_get_drvdata(pdev);
+	struct exynos_drm_manager *mgr = platform_get_drvdata(pdev);
+	struct fimd_context *ctx = mgr->ctx;
 
 	exynos_drm_subdrv_unregister(&ctx->subdrv);
 
···
 #ifdef CONFIG_PM_SLEEP
 static int fimd_suspend(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
 
 	/*
 	 * do not use pm_runtime_suspend(). if pm_runtime_suspend() is
···
 	 * because the usage_count of pm runtime is more than 1.
 	 */
 	if (!pm_runtime_suspended(dev))
-		return fimd_activate(ctx, false);
+		return fimd_activate(mgr, false);
 
 	return 0;
 }
 
 static int fimd_resume(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
 
 	/*
 	 * if entered to sleep when lcd panel was on, the usage_count
···
 	if (!pm_runtime_suspended(dev)) {
 		int ret;
 
-		ret = fimd_activate(ctx, true);
+		ret = fimd_activate(mgr, true);
 		if (ret < 0)
 			return ret;
 
···
 		 * registers but in case of sleep wakeup, it's not.
 		 * so fimd_apply function should be called at here.
 		 */
-		fimd_apply(dev);
+		fimd_apply(mgr);
 	}
 
 	return 0;
···
 #ifdef CONFIG_PM_RUNTIME
 static int fimd_runtime_suspend(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
 
-	return fimd_activate(ctx, false);
+	return fimd_activate(mgr, false);
 }
 
 static int fimd_runtime_resume(struct device *dev)
 {
-	struct fimd_context *ctx = get_fimd_context(dev);
+	struct exynos_drm_manager *mgr = get_fimd_manager(dev);
 
-	return fimd_activate(ctx, true);
+	return fimd_activate(mgr, true);
 }
 #endif
 

drivers/gpu/drm/exynos/exynos_drm_hdmi.c

···
 
 	return NULL;
 }
-
-static int drm_hdmi_check_mode(struct device *dev,
+static int drm_hdmi_check_mode_ctx(struct drm_hdmi_context *ctx,
 		struct drm_display_mode *mode)
 {
-	struct drm_hdmi_context *ctx = to_context(dev);
 	int ret = 0;
 
 	/*
···
 		return hdmi_ops->check_mode(ctx->hdmi_ctx->ctx, mode);
 
 	return 0;
+}
+
+static int drm_hdmi_check_mode(struct device *dev,
+		struct drm_display_mode *mode)
+{
+	struct drm_hdmi_context *ctx = to_context(dev);
+
+	return drm_hdmi_check_mode_ctx(ctx, mode);
 }
 
 static int drm_hdmi_power_on(struct device *dev, int mode)
···
 	.power_on = drm_hdmi_power_on,
 };
 
-static int drm_hdmi_enable_vblank(struct device *subdrv_dev)
+static int drm_hdmi_enable_vblank(struct exynos_drm_manager *mgr)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 	struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
 	struct exynos_drm_manager *manager = subdrv->manager;
 
···
 	return 0;
 }
 
-static void drm_hdmi_disable_vblank(struct device *subdrv_dev)
+static void drm_hdmi_disable_vblank(struct exynos_drm_manager *mgr)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (mixer_ops && mixer_ops->disable_vblank)
 		return mixer_ops->disable_vblank(ctx->mixer_ctx->ctx);
 }
 
-static void drm_hdmi_wait_for_vblank(struct device *subdrv_dev)
+static void drm_hdmi_wait_for_vblank(struct exynos_drm_manager *mgr)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (mixer_ops && mixer_ops->wait_for_vblank)
 		mixer_ops->wait_for_vblank(ctx->mixer_ctx->ctx);
 }
 
-static void drm_hdmi_mode_fixup(struct device *subdrv_dev,
+static void drm_hdmi_mode_fixup(struct exynos_drm_manager *mgr,
 				struct drm_connector *connector,
 				const struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode)
 {
+	struct drm_hdmi_context *ctx = mgr->ctx;
 	struct drm_display_mode *m;
 	int mode_ok;
 
 	drm_mode_set_crtcinfo(adjusted_mode, 0);
 
-	mode_ok = drm_hdmi_check_mode(subdrv_dev, adjusted_mode);
+	mode_ok = drm_hdmi_check_mode_ctx(ctx, adjusted_mode);
 
 	/* just return if user desired mode exists. */
 	if (mode_ok == 0)
···
 	 * to adjusted_mode.
 	 */
 	list_for_each_entry(m, &connector->modes, head) {
-		mode_ok = drm_hdmi_check_mode(subdrv_dev, m);
+		mode_ok = drm_hdmi_check_mode_ctx(ctx, m);
 
 		if (mode_ok == 0) {
 			struct drm_mode_object base;
···
 	}
 }
 
-static void drm_hdmi_mode_set(struct device *subdrv_dev, void *mode)
+static void drm_hdmi_mode_set(struct exynos_drm_manager *mgr, void *mode)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (hdmi_ops && hdmi_ops->mode_set)
 		hdmi_ops->mode_set(ctx->hdmi_ctx->ctx, mode);
 }
 
-static void drm_hdmi_get_max_resol(struct device *subdrv_dev,
+static void drm_hdmi_get_max_resol(struct exynos_drm_manager *mgr,
 				unsigned int *width, unsigned int *height)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (hdmi_ops && hdmi_ops->get_max_resol)
 		hdmi_ops->get_max_resol(ctx->hdmi_ctx->ctx, width, height);
 }
 
-static void drm_hdmi_commit(struct device *subdrv_dev)
+static void drm_hdmi_commit(struct exynos_drm_manager *mgr)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (hdmi_ops && hdmi_ops->commit)
 		hdmi_ops->commit(ctx->hdmi_ctx->ctx);
 }
 
-static int drm_hdmi_mgr_initialize(struct device *subdrv_dev,
-		struct drm_device *drm_dev)
+static int drm_hdmi_mgr_initialize(struct exynos_drm_manager *mgr, struct drm_device *drm_dev)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 	int ret = 0;
 
 	if (mixer_ops && mixer_ops->initialize)
···
 	return ret;
 }
 
-static void drm_hdmi_dpms(struct device *subdrv_dev, int mode)
+static void drm_hdmi_dpms(struct exynos_drm_manager *mgr, int mode)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (mixer_ops && mixer_ops->dpms)
 		mixer_ops->dpms(ctx->mixer_ctx->ctx, mode);
···
 		hdmi_ops->dpms(ctx->hdmi_ctx->ctx, mode);
 }
 
-static void drm_hdmi_apply(struct device *subdrv_dev)
+static void drm_hdmi_apply(struct exynos_drm_manager *mgr)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 	int i;
 
 	for (i = 0; i < MIXER_WIN_NR; i++) {
···
 		hdmi_ops->commit(ctx->hdmi_ctx->ctx);
 }
 
-static void drm_mixer_win_mode_set(struct device *subdrv_dev,
-		struct exynos_drm_overlay *overlay)
+static void drm_mixer_win_mode_set(struct exynos_drm_manager *mgr,
+				struct exynos_drm_overlay *overlay)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 
 	if (mixer_ops && mixer_ops->win_mode_set)
 		mixer_ops->win_mode_set(ctx->mixer_ctx->ctx, overlay);
 }
 
-static void drm_mixer_win_commit(struct device *subdrv_dev, int zpos)
+static void drm_mixer_win_commit(struct exynos_drm_manager *mgr, int zpos)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 	int win = (zpos == DEFAULT_ZPOS) ? MIXER_DEFAULT_WIN : zpos;
 
 	if (win < 0 || win >= MIXER_WIN_NR) {
···
 	ctx->enabled[win] = true;
 }
 
-static void drm_mixer_win_disable(struct device *subdrv_dev, int zpos)
+static void drm_mixer_win_disable(struct exynos_drm_manager *mgr, int zpos)
 {
-	struct drm_hdmi_context *ctx = to_context(subdrv_dev);
+	struct drm_hdmi_context *ctx = mgr->ctx;
 	int win = (zpos == DEFAULT_ZPOS) ? MIXER_DEFAULT_WIN : zpos;
 
 	if (win < 0 || win >= MIXER_WIN_NR) {
···
 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return -ENOMEM;
+
+	hdmi_manager.ctx = ctx;
 
 	subdrv = &ctx->subdrv;
 

drivers/gpu/drm/exynos/exynos_drm_vidi.c

···
 /* vidi has totally three virtual windows. */
 #define WINDOWS_NR		3
 
-#define get_vidi_context(dev)	platform_get_drvdata(to_platform_device(dev))
+#define get_vidi_mgr(dev)	platform_get_drvdata(to_platform_device(dev))
 
 struct vidi_win_data {
 	unsigned int		offset_x;
···
 
 static bool vidi_display_is_connected(struct device *dev)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct exynos_drm_manager *mgr = get_vidi_mgr(dev);
+	struct vidi_context *ctx = mgr->ctx;
 
 	/*
 	 * connection request would come from user side
···
 static struct edid *vidi_get_edid(struct device *dev,
 			struct drm_connector *connector)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct exynos_drm_manager *mgr = get_vidi_mgr(dev);
+	struct vidi_context *ctx = mgr->ctx;
 	struct edid *edid;
 
 	/*
···
 	.power_on = vidi_display_power_on,
 };
 
-static void vidi_dpms(struct device *subdrv_dev, int mode)
+static void vidi_dpms(struct exynos_drm_manager *mgr, int mode)
 {
-	struct vidi_context *ctx = get_vidi_context(subdrv_dev);
+	struct vidi_context *ctx = mgr->ctx;
 
 	DRM_DEBUG_KMS("%d\n", mode);
 
···
 	mutex_unlock(&ctx->lock);
 }
 
-static void vidi_apply(struct device *subdrv_dev)
+static void vidi_apply(struct exynos_drm_manager *mgr)
 {
-	struct vidi_context *ctx = get_vidi_context(subdrv_dev);
-	struct exynos_drm_manager *mgr = ctx->subdrv.manager;
+	struct vidi_context *ctx = mgr->ctx;
 	struct exynos_drm_manager_ops *mgr_ops = mgr->ops;
 	struct vidi_win_data *win_data;
 	int i;
···
 	for (i = 0; i < WINDOWS_NR; i++) {
 		win_data = &ctx->win_data[i];
 		if (win_data->enabled && (mgr_ops && mgr_ops->win_commit))
-			mgr_ops->win_commit(subdrv_dev, i);
+			mgr_ops->win_commit(mgr, i);
 	}
 
 	if (mgr_ops && mgr_ops->commit)
-		mgr_ops->commit(subdrv_dev);
+		mgr_ops->commit(mgr);
 }
 
-static void vidi_commit(struct device *dev)
+static void vidi_commit(struct exynos_drm_manager *mgr)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct vidi_context *ctx = mgr->ctx;
 
 	if (ctx->suspended)
 		return;
 }
 
-static int vidi_enable_vblank(struct device *dev)
+static int vidi_enable_vblank(struct exynos_drm_manager *mgr)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct vidi_context *ctx = mgr->ctx;
 
 	if (ctx->suspended)
 		return -EPERM;
···
 	return 0;
 }
 
-static void vidi_disable_vblank(struct device *dev)
+static void vidi_disable_vblank(struct exynos_drm_manager *mgr)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct vidi_context *ctx = mgr->ctx;
 
 	if (ctx->suspended)
 		return;
···
 		ctx->vblank_on = false;
 }
 
-static void vidi_win_mode_set(struct device *dev,
-			      struct exynos_drm_overlay *overlay)
+static void vidi_win_mode_set(struct exynos_drm_manager *mgr,
+			struct exynos_drm_overlay *overlay)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct vidi_context *ctx = mgr->ctx;
 	struct vidi_win_data *win_data;
 	int win;
 	unsigned long offset;
 
 	if (!overlay) {
-		dev_err(dev, "overlay is NULL\n");
+		DRM_ERROR("overlay is NULL\n");
 		return;
 	}
 
···
 			overlay->fb_width, overlay->crtc_width);
 }
 
-static void vidi_win_commit(struct device *dev, int zpos)
+static void vidi_win_commit(struct exynos_drm_manager *mgr, int zpos)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct vidi_context *ctx = mgr->ctx;
 	struct vidi_win_data *win_data;
 	int win = zpos;
 
···
 		schedule_work(&ctx->work);
 }
 
-static void vidi_win_disable(struct device *dev, int zpos)
+static void vidi_win_disable(struct exynos_drm_manager *mgr, int zpos)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct vidi_context *ctx = mgr->ctx;
 	struct vidi_win_data *win_data;
 	int win = zpos;
 
···
 	/* TODO. */
 }
 
-static int vidi_power_on(struct vidi_context *ctx, bool enable)
+static int vidi_power_on(struct exynos_drm_manager *mgr, bool enable)
 {
-	struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
-	struct device *dev = subdrv->dev;
+	struct vidi_context *ctx = mgr->ctx;
+
+	DRM_DEBUG_KMS("%s\n", __FILE__);
+
+	if (enable != false && enable != true)
+		return -EINVAL;
 
 	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(dev);
+			vidi_enable_vblank(mgr);
 
-		vidi_apply(dev);
+		vidi_apply(mgr);
 	} else {
 		ctx->suspended = true;
 	}
···
 				struct device_attribute *attr, char *buf)
 {
 	int rc;
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct exynos_drm_manager *mgr = get_vidi_mgr(dev);
+	struct vidi_context *ctx = mgr->ctx;
 
 	mutex_lock(&ctx->lock);
 
···
 				struct device_attribute *attr,
 				const char *buf, size_t len)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct exynos_drm_manager *mgr = get_vidi_mgr(dev);
+	struct vidi_context *ctx = mgr->ctx;
 	int ret;
 
 	ret = kstrtoint(buf, 0, &ctx->connected);
···
 		display_ops = manager->display_ops;
 
 		if (display_ops->type == EXYNOS_DISPLAY_TYPE_VIDI) {
-			ctx = get_vidi_context(manager->dev);
+			ctx = manager->ctx;
 			break;
 		}
 	}
···
 
 	INIT_WORK(&ctx->work, vidi_fake_vblank_handler);
 
+	vidi_manager.ctx = ctx;
+
 	subdrv = &ctx->subdrv;
 	subdrv->dev = dev;
 	subdrv->manager = &vidi_manager;
···
 
 	mutex_init(&ctx->lock);
 
-	platform_set_drvdata(pdev, ctx);
+	platform_set_drvdata(pdev, &vidi_manager);
 
 	ret = device_create_file(dev, &dev_attr_connection);
 	if (ret < 0)
···
 #ifdef CONFIG_PM_SLEEP
 static int vidi_suspend(struct device *dev)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct exynos_drm_manager *mgr = get_vidi_mgr(dev);
 
-	return vidi_power_on(ctx, false);
+	return vidi_power_on(mgr, false);
 }
 
 static int vidi_resume(struct device *dev)
 {
-	struct vidi_context *ctx = get_vidi_context(dev);
+	struct exynos_drm_manager *mgr = get_vidi_mgr(dev);
 
-	return vidi_power_on(ctx, true);
+	return vidi_power_on(mgr, true);
 }
 #endif