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