62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2013 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <console/console.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <arch/cache.h>
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#include "chip.h"
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#include <soc/display.h>
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#include "gpio.h"
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/* the primary purpose of this function is to kick off things in
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* romstage that are time consuming. No more should be done at this
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* point than the bare minimum that will allow us to pick up the work
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* in the ramstage and not require lots of udelays. ramstage will do
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* the rest. As it happens, that merely means 'turn off everything you can,
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* save the minimum long-delay bit that you need to get graphics going'. It's
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* important not to have the backlight on as people don't like display trash
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* on startup, even if I do.
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*/
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void setup_display(struct soc_nvidia_tegra124_config *config)
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{
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if (config->panel_vdd_gpio){
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gpio_output(config->panel_vdd_gpio, 1);
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printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
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__func__, config->panel_vdd_gpio, 1);
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}
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if (config->lvds_shutdown_gpio){
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gpio_output(config->lvds_shutdown_gpio, 0);
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printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
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__func__, config->lvds_shutdown_gpio, 0);
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}
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if (config->backlight_en_gpio){
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gpio_output(config->backlight_en_gpio, 0);
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printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
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__func__, config->backlight_en_gpio, 0);
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}
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if (config->backlight_vdd_gpio){
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gpio_output(config->backlight_vdd_gpio, 0);
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printk(BIOS_SPEW,"%s: setting gpio %08x to %d\n",
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__func__, config->backlight_vdd_gpio, 0);
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}
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}
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