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/*
* (C) Copyright 2010
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARCH_TEGRA_DISPLAY_H
#define __ASM_ARCH_TEGRA_DISPLAY_H
#include <asm/arch-tegra/dc.h>
#include <fdtdec.h>
#include <asm/gpio.h>
/* This holds information about a window which can be displayed */
struct disp_ctl_win {
enum win_color_depth_id fmt; /* Color depth/format */
unsigned bpp; /* Bits per pixel */
phys_addr_t phys_addr; /* Physical address in memory */
unsigned x; /* Horizontal address offset (bytes) */
unsigned y; /* Veritical address offset (bytes) */
unsigned w; /* Width of source window */
unsigned h; /* Height of source window */
unsigned stride; /* Number of bytes per line */
unsigned out_x; /* Left edge of output window (col) */
unsigned out_y; /* Top edge of output window (row) */
unsigned out_w; /* Width of output window in pixels */
unsigned out_h; /* Height of output window in pixels */
};
#define FDT_LCD_TIMINGS 4
enum {
FDT_LCD_TIMING_REF_TO_SYNC,
FDT_LCD_TIMING_SYNC_WIDTH,
FDT_LCD_TIMING_BACK_PORCH,
FDT_LCD_TIMING_FRONT_PORCH,
FDT_LCD_TIMING_COUNT,
};
enum lcd_cache_t {
FDT_LCD_CACHE_OFF = 0,
FDT_LCD_CACHE_WRITE_THROUGH = 1 << 0,
FDT_LCD_CACHE_WRITE_BACK = 1 << 1,
FDT_LCD_CACHE_FLUSH = 1 << 2,
FDT_LCD_CACHE_WRITE_BACK_FLUSH = FDT_LCD_CACHE_WRITE_BACK |
FDT_LCD_CACHE_FLUSH,
};
/**
* 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*/
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