85 lines
2.2 KiB
C
85 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 2014 Rockchip 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 <arch/io.h>
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#include <stdlib.h>
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#include "cpu.h"
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#include "gpio.h"
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#include "pmu.h"
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struct rk3288_gpio_regs *gpio_port[] = {
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(struct rk3288_gpio_regs *)0xff750000,
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(struct rk3288_gpio_regs *)0xff780000,
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(struct rk3288_gpio_regs *)0xff790000,
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(struct rk3288_gpio_regs *)0xff7a0000,
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(struct rk3288_gpio_regs *)0xff7b0000,
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(struct rk3288_gpio_regs *)0xff7c0000,
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(struct rk3288_gpio_regs *)0xff7d0000,
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(struct rk3288_gpio_regs *)0xff7e0000,
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(struct rk3288_gpio_regs *)0xff7f0000
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};
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enum {
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PULLNONE = 0,
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PULLUP,
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PULLDOWN
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};
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#define PMU_GPIO_PORT 0
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static void __gpio_input(gpio_t gpio, u32 pull)
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{
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clrbits_le32(&gpio_port[gpio.port]->swporta_ddr, 1 << gpio.num);
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if (gpio.port == PMU_GPIO_PORT)
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clrsetbits_le32(&rk3288_pmu->gpio0pull[gpio.bank],
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3 << (gpio.idx * 2), pull << (gpio.idx * 2));
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else
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writel(RK_CLRSETBITS(3 << (gpio.idx * 2),
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pull << (gpio.idx * 2)),
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&rk3288_grf->gpio1_p[(gpio.port - 1)][gpio.bank]);
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}
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void gpio_input(gpio_t gpio)
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{
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__gpio_input(gpio, PULLNONE);
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}
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void gpio_input_pulldown(gpio_t gpio)
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{
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__gpio_input(gpio, PULLDOWN);
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}
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void gpio_input_pullup(gpio_t gpio)
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{
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__gpio_input(gpio, PULLUP);
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}
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int gpio_get_in_value(gpio_t gpio)
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{
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return (readl(&gpio_port[gpio.port]->ext_porta) >> gpio.num) & 0x1;
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}
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void gpio_output(gpio_t gpio, int value)
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{
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setbits_le32(&gpio_port[gpio.port]->swporta_ddr, 1 << gpio.num);
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clrsetbits_le32(&gpio_port[gpio.port]->swporta_dr, 1 << gpio.num,
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!!value << gpio.num);
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}
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