* (C) Copyright 2010
* NVIDIA Corporation <www.nvidia.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARCH_TEGRA_DISPLAY_H
#define __ASM_ARCH_TEGRA_DISPLAY_H
-#include <asm/arch/dc.h>
-#include <fdtdec.h>
+#include <asm/arch-tegra/dc.h>
/* This holds information about a window which can be displayed */
struct disp_ctl_win {
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,
-};
-
-/* Information about the display controller */
-struct fdt_disp_config {
- int valid; /* config is valid */
- int width; /* width in pixels */
- int height; /* height in pixels */
- int bpp; /* number of bits per pixel */
-
- /*
- * log2 of number of bpp, in general, unless it bpp is 24 in which
- * case this field holds 24 also! This is a U-Boot thing.
- */
- int log2_bpp;
- struct disp_ctlr *disp; /* Display controller to use */
- fdt_addr_t frame_buffer; /* Address of frame buffer */
- unsigned pixel_clock; /* Pixel clock in Hz */
- uint horiz_timing[FDT_LCD_TIMING_COUNT]; /* Horizontal timing */
- uint vert_timing[FDT_LCD_TIMING_COUNT]; /* Vertical timing */
- int panel_node; /* node offset of panel information */
-};
-
-/* Information about the LCD panel */
-struct fdt_panel_config {
- int pwm_channel; /* PWM channel to use for backlight */
- enum lcd_cache_t cache_type;
-
- struct fdt_gpio_state backlight_en; /* GPIO for backlight enable */
- struct fdt_gpio_state lvds_shutdown; /* GPIO for lvds shutdown */
- struct fdt_gpio_state backlight_vdd; /* GPIO for backlight vdd */
- struct fdt_gpio_state panel_vdd; /* GPIO for panel vdd */
- /*
- * Panel required timings
- * Timing 1: delay between panel_vdd-rise and data-rise
- * Timing 2: delay between data-rise and backlight_vdd-rise
- * Timing 3: delay between backlight_vdd and pwm-rise
- * Timing 4: delay between pwm-rise and backlight_en-rise
- */
- uint panel_timings[FDT_LCD_TIMINGS];
-};
-
-/**
- * Register a new display based on device tree configuration.
- *
- * The frame buffer can be positioned by U-Boot or overriden 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*/
projects / oweals / u-boot.git / blobdiff