2 files changed, 13 insertions, 116 deletions

diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
index bf96072d1b97..d1c3ce9ab294 100644
--- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
+++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
@@ -236,101 +236,6 @@ void tinydrm_xrgb8888_to_gray8(u8 *dst, void *vaddr, struct drm_framebuffer *fb,
 }
 EXPORT_SYMBOL(tinydrm_xrgb8888_to_gray8);
 
-/**
- * tinydrm_of_find_backlight - Find backlight device in device-tree
- * @dev: Device
- *
- * This function looks for a DT node pointed to by a property named 'backlight'
- * and uses of_find_backlight_by_node() to get the backlight device.
- * Additionally if the brightness property is zero, it is set to
- * max_brightness.
- *
- * Returns:
- * NULL if there's no backlight property.
- * Error pointer -EPROBE_DEFER if the DT node is found, but no backlight device
- * is found.
- * If the backlight device is found, a pointer to the structure is returned.
- */
-struct backlight_device *tinydrm_of_find_backlight(struct device *dev)
-{
-	struct backlight_device *backlight;
-	struct device_node *np;
-
-	np = of_parse_phandle(dev->of_node, "backlight", 0);
-	if (!np)
-		return NULL;
-
-	backlight = of_find_backlight_by_node(np);
-	of_node_put(np);
-
-	if (!backlight)
-		return ERR_PTR(-EPROBE_DEFER);
-
-	if (!backlight->props.brightness) {
-		backlight->props.brightness = backlight->props.max_brightness;
-		DRM_DEBUG_KMS("Backlight brightness set to %d\n",
-			      backlight->props.brightness);
-	}
-
-	return backlight;
-}
-EXPORT_SYMBOL(tinydrm_of_find_backlight);
-
-/**
- * tinydrm_enable_backlight - Enable backlight helper
- * @backlight: Backlight device
- *
- * Returns:
- * Zero on success, negative error code on failure.
- */
-int tinydrm_enable_backlight(struct backlight_device *backlight)
-{
-	unsigned int old_state;
-	int ret;
-
-	if (!backlight)
-		return 0;
-
-	old_state = backlight->props.state;
-	backlight->props.state &= ~BL_CORE_FBBLANK;
-	DRM_DEBUG_KMS("Backlight state: 0x%x -> 0x%x\n", old_state,
-		      backlight->props.state);
-
-	ret = backlight_update_status(backlight);
-	if (ret)
-		DRM_ERROR("Failed to enable backlight %d\n", ret);
-
-	return ret;
-}
-EXPORT_SYMBOL(tinydrm_enable_backlight);
-
-/**
- * tinydrm_disable_backlight - Disable backlight helper
- * @backlight: Backlight device
- *
- * Returns:
- * Zero on success, negative error code on failure.
- */
-int tinydrm_disable_backlight(struct backlight_device *backlight)
-{
-	unsigned int old_state;
-	int ret;
-
-	if (!backlight)
-		return 0;
-
-	old_state = backlight->props.state;
-	backlight->props.state |= BL_CORE_FBBLANK;
-	DRM_DEBUG_KMS("Backlight state: 0x%x -> 0x%x\n", old_state,
-		      backlight->props.state);
-	ret = backlight_update_status(backlight);
-	if (ret)
-		DRM_ERROR("Failed to disable backlight %d\n", ret);
-
-	return ret;
-}
-EXPORT_SYMBOL(tinydrm_disable_backlight);
-
 #if IS_ENABLED(CONFIG_SPI)
 
 /**
diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
index f41fc506ff87..11ae950b0fc9 100644
--- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
+++ b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c
@@ -15,7 +15,7 @@
 
 struct tinydrm_connector {
 	struct drm_connector base;
-	const struct drm_display_mode *mode;
+	struct drm_display_mode mode;
 };
 
 static inline struct tinydrm_connector *
@@ -29,7 +29,7 @@ static int tinydrm_connector_get_modes(struct drm_connector *connector)
 	struct tinydrm_connector *tconn = to_tinydrm_connector(connector);
 	struct drm_display_mode *mode;
 
-	mode = drm_mode_duplicate(connector->dev, tconn->mode);
+	mode = drm_mode_duplicate(connector->dev, &tconn->mode);
 	if (!mode) {
 		DRM_ERROR("Failed to duplicate mode\n");
 		return 0;
@@ -92,7 +92,7 @@ tinydrm_connector_create(struct drm_device *drm,
 	if (!tconn)
 		return ERR_PTR(-ENOMEM);
 
-	tconn->mode = mode;
+	drm_mode_copy(&tconn->mode, mode);
 	connector = &tconn->base;
 
 	drm_connector_helper_add(connector, &tinydrm_connector_hfuncs);
@@ -199,35 +199,27 @@ tinydrm_display_pipe_init(struct tinydrm_device *tdev,
 			  unsigned int rotation)
 {
 	struct drm_device *drm = tdev->drm;
-	struct drm_display_mode *mode_copy;
+	struct drm_display_mode mode_copy;
 	struct drm_connector *connector;
 	int ret;
 
-	mode_copy = devm_kmalloc(drm->dev, sizeof(*mode_copy), GFP_KERNEL);
-	if (!mode_copy)
-		return -ENOMEM;
-
-	*mode_copy = *mode;
-	ret = tinydrm_rotate_mode(mode_copy, rotation);
+	drm_mode_copy(&mode_copy, mode);
+	ret = tinydrm_rotate_mode(&mode_copy, rotation);
 	if (ret) {
 		DRM_ERROR("Illegal rotation value %u\n", rotation);
 		return -EINVAL;
 	}
 
-	drm->mode_config.min_width = mode_copy->hdisplay;
-	drm->mode_config.max_width = mode_copy->hdisplay;
-	drm->mode_config.min_height = mode_copy->vdisplay;
-	drm->mode_config.max_height = mode_copy->vdisplay;
+	drm->mode_config.min_width = mode_copy.hdisplay;
+	drm->mode_config.max_width = mode_copy.hdisplay;
+	drm->mode_config.min_height = mode_copy.vdisplay;
+	drm->mode_config.max_height = mode_copy.vdisplay;
 
-	connector = tinydrm_connector_create(drm, mode_copy, connector_type);
+	connector = tinydrm_connector_create(drm, &mode_copy, connector_type);
 	if (IS_ERR(connector))
 		return PTR_ERR(connector);
 
-	ret = drm_simple_display_pipe_init(drm, &tdev->pipe, funcs, formats,
-					   format_count, NULL, connector);
-	if (ret)
-		return ret;
-
-	return 0;
+	return drm_simple_display_pipe_init(drm, &tdev->pipe, funcs, formats,
+					    format_count, NULL, connector);
 }
 EXPORT_SYMBOL(tinydrm_display_pipe_init);