+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2014 Google Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _DISPLAY_H
* @source_id: ID for the source of the display data, typically a video
* controller
* @src_dev: Source device providing the video
+ * @in_use: Display is being used
*/
struct display_plat {
int source_id;
struct udevice *src_dev;
+ bool in_use;
};
/**
- * display_read_timing() - Read timing information from EDID
+ * display_read_timing() - Read timing information
*
* @dev: Device to read from
* @return 0 if OK, -ve on error
int display_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *timing);
+/**
+ * display_in_use() - Check if a display is in use by any device
+ *
+ * @return true if the device is in use (display_enable() has been called
+ * successfully), else false
+ */
+bool display_in_use(struct udevice *dev);
+
struct dm_display_ops {
+ /**
+ * read_timing() - Read information directly
+ *
+ * @dev: Device to read from
+ * @timing: Display timings
+ * @return 0 if OK, -ve on error
+ */
+ int (*read_timing)(struct udevice *dev, struct display_timing *timing);
+
/**
* read_edid() - Read information from EDID
*
*/
int (*enable)(struct udevice *dev, int panel_bpp,
const struct display_timing *timing);
+
+ /**
+ * mode_valid() - Check if mode is supported
+ *
+ * @dev: Device to enable
+ * @timing: Display timings
+ * @return true if supported, false if not
+ */
+ bool (*mode_valid)(struct udevice *dev,
+ const struct display_timing *timing);
};
#define display_get_ops(dev) ((struct dm_display_ops *)(dev)->driver->ops)