huang lin | d5fb66e | 2014-08-26 18:22:08 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2014 Rockchip Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #include <console/console.h> |
| 21 | #include <arch/io.h> |
| 22 | #include <stdlib.h> |
| 23 | #include "cpu.h" |
| 24 | #include "gpio.h" |
| 25 | #include "pmu.h" |
| 26 | |
| 27 | struct rk3288_gpio_regs *gpio_port[] = { |
| 28 | (struct rk3288_gpio_regs *)0xff750000, |
| 29 | (struct rk3288_gpio_regs *)0xff780000, |
| 30 | (struct rk3288_gpio_regs *)0xff790000, |
| 31 | (struct rk3288_gpio_regs *)0xff7a0000, |
| 32 | (struct rk3288_gpio_regs *)0xff7b0000, |
| 33 | (struct rk3288_gpio_regs *)0xff7c0000, |
| 34 | (struct rk3288_gpio_regs *)0xff7d0000, |
| 35 | (struct rk3288_gpio_regs *)0xff7e0000, |
| 36 | (struct rk3288_gpio_regs *)0xff7f0000 |
| 37 | }; |
| 38 | |
| 39 | enum { |
| 40 | PULLNONE = 0, |
| 41 | PULLUP, |
| 42 | PULLDOWN |
| 43 | }; |
| 44 | |
| 45 | #define PMU_GPIO_PORT 0 |
| 46 | |
| 47 | static void __gpio_input(gpio_t gpio, u32 pull) |
| 48 | { |
| 49 | clrbits_le32(&gpio_port[gpio.port]->swporta_ddr, 1 << gpio.num); |
| 50 | if (gpio.port == PMU_GPIO_PORT) |
| 51 | clrsetbits_le32(&rk3288_pmu->gpio0pull[gpio.bank], |
| 52 | 3 << (gpio.idx * 2), pull << (gpio.idx * 2)); |
| 53 | else |
| 54 | writel(RK_CLRSETBITS(3 << (gpio.idx * 2), |
| 55 | pull << (gpio.idx * 2)), |
| 56 | &rk3288_grf->gpio1_p[(gpio.port - 1)][gpio.bank]); |
| 57 | } |
| 58 | |
| 59 | void gpio_input(gpio_t gpio) |
| 60 | { |
| 61 | __gpio_input(gpio, PULLNONE); |
| 62 | } |
| 63 | |
| 64 | void gpio_input_pulldown(gpio_t gpio) |
| 65 | { |
| 66 | __gpio_input(gpio, PULLDOWN); |
| 67 | } |
| 68 | |
| 69 | void gpio_input_pullup(gpio_t gpio) |
| 70 | { |
| 71 | __gpio_input(gpio, PULLUP); |
| 72 | } |
| 73 | |
| 74 | int gpio_get_in_value(gpio_t gpio) |
| 75 | { |
| 76 | return (readl(&gpio_port[gpio.port]->ext_porta) >> gpio.num) & 0x1; |
| 77 | } |
| 78 | |
| 79 | void gpio_output(gpio_t gpio, int value) |
| 80 | { |
| 81 | setbits_le32(&gpio_port[gpio.port]->swporta_ddr, 1 << gpio.num); |
| 82 | clrsetbits_le32(&gpio_port[gpio.port]->swporta_dr, 1 << gpio.num, |
| 83 | !!value << gpio.num); |
| 84 | } |