| Haavard Skinnemoen | ab0df36 | 2008-08-29 21:09:49 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006, 2008 Atmel Corporation |
| 3 | * |
| 4 | * See file CREDITS for list of people who contributed to this |
| 5 | * project. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of |
| 10 | * the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 20 | * MA 02111-1307 USA |
| 21 | */ |
| 22 | #include <common.h> |
| 23 | |
| 24 | #include <asm/io.h> |
| 25 | #include <asm/arch/memory-map.h> |
| 26 | #include <asm/arch/gpio.h> |
| 27 | |
| 28 | void portmux_select_peripheral(void *port, unsigned long pin_mask, |
| 29 | enum portmux_function func, unsigned long flags) |
| 30 | { |
| 31 | if (flags & PORTMUX_PULL_UP) |
| 32 | pio_writel(port, PUER, pin_mask); |
| 33 | else |
| 34 | pio_writel(port, PUDR, pin_mask); |
| 35 | |
| 36 | switch (func) { |
| 37 | case PORTMUX_FUNC_A: |
| 38 | pio_writel(port, ASR, pin_mask); |
| 39 | break; |
| 40 | case PORTMUX_FUNC_B: |
| 41 | pio_writel(port, BSR, pin_mask); |
| 42 | break; |
| 43 | } |
| 44 | |
| 45 | pio_writel(port, PDR, pin_mask); |
| 46 | } |
| 47 | |
| 48 | void portmux_select_gpio(void *port, unsigned long pin_mask, |
| 49 | unsigned long flags) |
| 50 | { |
| 51 | if (flags & PORTMUX_PULL_UP) |
| 52 | pio_writel(port, PUER, pin_mask); |
| 53 | else |
| 54 | pio_writel(port, PUDR, pin_mask); |
| 55 | |
| 56 | if (flags & PORTMUX_OPEN_DRAIN) |
| 57 | pio_writel(port, MDER, pin_mask); |
| 58 | else |
| 59 | pio_writel(port, MDDR, pin_mask); |
| 60 | |
| 61 | if (flags & PORTMUX_DIR_OUTPUT) { |
| 62 | if (flags & PORTMUX_INIT_HIGH) |
| 63 | pio_writel(port, SODR, pin_mask); |
| 64 | else |
| 65 | pio_writel(port, CODR, pin_mask); |
| 66 | pio_writel(port, OER, pin_mask); |
| 67 | } else { |
| 68 | pio_writel(port, ODR, pin_mask); |
| 69 | } |
| 70 | |
| 71 | pio_writel(port, PER, pin_mask); |
| 72 | } |
| 73 | |
| 74 | void pio_set_output_value(unsigned int pin, int value) |
| 75 | { |
| 76 | void *port = pio_pin_to_port(pin); |
| 77 | |
| 78 | if (!port) |
| 79 | panic("Invalid GPIO pin %u\n", pin); |
| 80 | |
| 81 | __pio_set_output_value(port, pin & 0x1f, value); |
| 82 | } |
| 83 | |
| 84 | int pio_get_input_value(unsigned int pin) |
| 85 | { |
| 86 | void *port = pio_pin_to_port(pin); |
| 87 | |
| 88 | if (!port) |
| 89 | panic("Invalid GPIO pin %u\n", pin); |
| 90 | |
| 91 | return __pio_get_input_value(port, pin & 0x1f); |
| 92 | } |