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/*
* This file is part of the coreboot project.
*
* Copyright 2013 Google Inc.
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <console/console.h>
#include <stdlib.h>
#include <stddef.h>
#include <arch/cache.h>
#include "chip.h"
#include <soc/display.h>
#include "gpio.h"
/* the primary purpose of this function is to kick off things in
* romstage that are time consuming. No more should be done at this
* point than the bare minimum that will allow us to pick up the work
* in the ramstage and not require lots of udelays. ramstage will do
* the rest. As it happens, that merely means 'turn off everything you can,
* save the minimum long-delay bit that you need to get graphics going'. It's
* important not to have the backlight on as people don't like display trash
* on startup, even if I do.
*/
void setup_display(struct soc_nvidia_tegra124_config *config)
{
if (config->panel_vdd_gpio){
gpio_output(config->panel_vdd_gpio, 1);
printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
__func__, config->panel_vdd_gpio, 1);
}
if (config->lvds_shutdown_gpio){
gpio_output(config->lvds_shutdown_gpio, 0);
printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
__func__, config->lvds_shutdown_gpio, 0);
}
if (config->backlight_en_gpio){
gpio_output(config->backlight_en_gpio, 0);
printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
__func__, config->backlight_en_gpio, 0);
}
if (config->backlight_vdd_gpio){
gpio_output(config->backlight_vdd_gpio, 0);
printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
__func__, config->backlight_vdd_gpio, 0);
}
}
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