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/*
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 * Copyright (c) 2019-2023 CTCaer
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms and conditions of the GNU General Public License,
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 * version 2, as published by the Free Software Foundation.
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 *
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 * This program is distributed in the hope it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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 * 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, see <http://www.gnu.org/licenses/>.
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 */
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#include <soc/fuse.h>
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#include <soc/gpio.h>
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#include <soc/hw_init.h>
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#include <soc/pinmux.h>
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#include <soc/pmc.h>
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#include <soc/t210.h>
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#include <utils/types.h>
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static u8 reg_5v_dev = 0;
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static bool usb_src = false;
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void regulator_5v_enable(u8 dev)
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{
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	bool tegra_t210 = hw_get_chip_id() == GP_HIDREV_MAJOR_T210;
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	// The power supply selection from battery or USB is automatic.
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	if (!reg_5v_dev)
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	{
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		// Fan and Rail power from battery 5V regulator EN.
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		PINMUX_AUX(PINMUX_AUX_SATA_LED_ACTIVE) = 1;
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		gpio_direction_output(GPIO_PORT_A, GPIO_PIN_5, GPIO_HIGH);
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		// Only Icosa has USB 5V VBUS rails.
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		if (tegra_t210)
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		{
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			// Fan and Rail power from USB 5V VBUS EN.
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			PINMUX_AUX(PINMUX_AUX_USB_VBUS_EN0) = PINMUX_LPDR | 1;
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			gpio_direction_output(GPIO_PORT_CC, GPIO_PIN_4, GPIO_LOW);
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		}
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		// Make sure GPIO IO power is enabled.
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		PMC(APBDEV_PMC_NO_IOPOWER) &= ~PMC_NO_IOPOWER_GPIO;
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		(void)PMC(APBDEV_PMC_NO_IOPOWER); // Commit write.
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		// Inform GPIO IO pads that we switched to 1.8V.
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		PMC(APBDEV_PMC_PWR_DET_VAL) &= ~PMC_PWR_DET_33V_GPIO;
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		(void)PMC(APBDEV_PMC_PWR_DET_VAL); // Commit write.
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		usb_src = false;
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	}
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	reg_5v_dev |= dev;
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}
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void regulator_5v_disable(u8 dev)
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{
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	bool tegra_t210 = hw_get_chip_id() == GP_HIDREV_MAJOR_T210;
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	reg_5v_dev &= ~dev;
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	if (!reg_5v_dev)
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	{
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		// Rail power from battery 5V regulator.
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		gpio_write(GPIO_PORT_A, GPIO_PIN_5, GPIO_LOW);
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		// Only Icosa has USB 5V VBUS rails.
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		if (tegra_t210)
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		{
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			// Rail power from USB 5V VBUS.
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			gpio_write(GPIO_PORT_CC, GPIO_PIN_4, GPIO_LOW);
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			usb_src = false;
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		}
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	}
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}
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bool regulator_5v_get_dev_enabled(u8 dev)
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{
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	return (reg_5v_dev & dev);
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}
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void regulator_5v_usb_src_enable(bool enable)
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{
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	// Only for Icosa.
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	if (hw_get_chip_id() != GP_HIDREV_MAJOR_T210)
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		return;
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	if (enable && !usb_src)
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	{
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		gpio_write(GPIO_PORT_CC, GPIO_PIN_4, GPIO_HIGH);
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		usb_src = true;
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	}
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	else if (!enable && usb_src)
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	{
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		gpio_write(GPIO_PORT_CC, GPIO_PIN_4, GPIO_LOW);
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		usb_src = false;
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	}
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}
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