GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/arm/include/asm/arch-tegra124/display.h

@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ *  (C) Copyright 2010
+ *  NVIDIA Corporation <www.nvidia.com>
+ */
+
+#ifndef __ASM_ARCH_TEGRA_DISPLAY_H
+#define __ASM_ARCH_TEGRA_DISPLAY_H
+
+/**
+ * Register a new display based on device tree configuration.
+ *
+ * The frame buffer can be positioned by U-Boot or overridden by the fdt.
+ * You should pass in the U-Boot address here, and check the contents of
+ * struct fdt_disp_config to see what was actually chosen.
+ *
+ * @param blob			Device tree blob
+ * @param default_lcd_base	Default address of LCD frame buffer
+ * @return 0 if ok, -1 on error (unsupported bits per pixel)
+ */
+int tegra_display_probe(const void *blob, void *default_lcd_base);
+
+/**
+ * Return the current display configuration
+ *
+ * @return pointer to display configuration, or NULL if there is no valid
+ * config
+ */
+struct fdt_disp_config *tegra_display_get_config(void);
+
+/**
+ * Perform the next stage of the LCD init if it is time to do so.
+ *
+ * LCD init can be time-consuming because of the number of delays we need
+ * while waiting for the backlight power supply, etc. This function can
+ * be called at various times during U-Boot operation to advance the
+ * initialization of the LCD to the next stage if sufficient time has
+ * passed since the last stage. It keeps track of what stage it is up to
+ * and the time that it is permitted to move to the next stage.
+ *
+ * The final call should have wait=1 to complete the init.
+ *
+ * @param blob	fdt blob containing LCD information
+ * @param wait	1 to wait until all init is complete, and then return
+ *		0 to return immediately, potentially doing nothing if it is
+ *		not yet time for the next init.
+ */
+int tegra_lcd_check_next_stage(const void *blob, int wait);
+
+/**
+ * Set up the maximum LCD size so we can size the frame buffer.
+ *
+ * @param blob	fdt blob containing LCD information
+ */
+void tegra_lcd_early_init(const void *blob);
+
+#endif /*__ASM_ARCH_TEGRA_DISPLAY_H*/