| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-sa1100/leds-badge4.c |
| 3 | * |
| 4 | * Author: Christopher Hoover <ch@hpl.hp.com> |
| 5 | * Copyright (C) 2002 Hewlett-Packard Company |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <linux/config.h> |
| 14 | #include <linux/init.h> |
| 15 | |
| 16 | #include <asm/hardware.h> |
| 17 | #include <asm/leds.h> |
| 18 | #include <asm/system.h> |
| 19 | |
| 20 | #include "leds.h" |
| 21 | |
| 22 | #define LED_STATE_ENABLED 1 |
| 23 | #define LED_STATE_CLAIMED 2 |
| 24 | |
| 25 | static unsigned int led_state; |
| 26 | static unsigned int hw_led_state; |
| 27 | |
| 28 | #define LED_RED GPIO_GPIO(7) |
| 29 | #define LED_GREEN GPIO_GPIO(9) |
| 30 | #define LED_MASK (LED_RED|LED_GREEN) |
| 31 | |
| 32 | #define LED_IDLE LED_GREEN |
| 33 | #define LED_TIMER LED_RED |
| 34 | |
| 35 | void badge4_leds_event(led_event_t evt) |
| 36 | { |
| 37 | unsigned long flags; |
| 38 | |
| 39 | local_irq_save(flags); |
| 40 | |
| 41 | switch (evt) { |
| 42 | case led_start: |
| 43 | GPDR |= LED_MASK; |
| 44 | hw_led_state = LED_MASK; |
| 45 | led_state = LED_STATE_ENABLED; |
| 46 | break; |
| 47 | |
| 48 | case led_stop: |
| 49 | led_state &= ~LED_STATE_ENABLED; |
| 50 | break; |
| 51 | |
| 52 | case led_claim: |
| 53 | led_state |= LED_STATE_CLAIMED; |
| 54 | hw_led_state = LED_MASK; |
| 55 | break; |
| 56 | |
| 57 | case led_release: |
| 58 | led_state &= ~LED_STATE_CLAIMED; |
| 59 | hw_led_state = LED_MASK; |
| 60 | break; |
| 61 | |
| 62 | #ifdef CONFIG_LEDS_TIMER |
| 63 | case led_timer: |
| 64 | if (!(led_state & LED_STATE_CLAIMED)) |
| 65 | hw_led_state ^= LED_TIMER; |
| 66 | break; |
| 67 | #endif |
| 68 | |
| 69 | #ifdef CONFIG_LEDS_CPU |
| 70 | case led_idle_start: |
| 71 | /* LED off when system is idle */ |
| 72 | if (!(led_state & LED_STATE_CLAIMED)) |
| 73 | hw_led_state &= ~LED_IDLE; |
| 74 | break; |
| 75 | |
| 76 | case led_idle_end: |
| 77 | if (!(led_state & LED_STATE_CLAIMED)) |
| 78 | hw_led_state |= LED_IDLE; |
| 79 | break; |
| 80 | #endif |
| 81 | |
| 82 | case led_red_on: |
| 83 | if (!(led_state & LED_STATE_CLAIMED)) |
| 84 | hw_led_state &= ~LED_RED; |
| 85 | break; |
| 86 | |
| 87 | case led_red_off: |
| 88 | if (!(led_state & LED_STATE_CLAIMED)) |
| 89 | hw_led_state |= LED_RED; |
| 90 | break; |
| 91 | |
| 92 | case led_green_on: |
| 93 | if (!(led_state & LED_STATE_CLAIMED)) |
| 94 | hw_led_state &= ~LED_GREEN; |
| 95 | break; |
| 96 | |
| 97 | case led_green_off: |
| 98 | if (!(led_state & LED_STATE_CLAIMED)) |
| 99 | hw_led_state |= LED_GREEN; |
| 100 | break; |
| 101 | |
| 102 | default: |
| 103 | break; |
| 104 | } |
| 105 | |
| 106 | if (led_state & LED_STATE_ENABLED) { |
| 107 | GPSR = hw_led_state; |
| 108 | GPCR = hw_led_state ^ LED_MASK; |
| 109 | } |
| 110 | |
| 111 | local_irq_restore(flags); |
| 112 | } |