| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-sa1100/leds-cerf.c |
| 3 | * |
| 4 | * Author: ??? |
| 5 | */ |
| 6 | #include <linux/config.h> |
| 7 | #include <linux/init.h> |
| 8 | |
| 9 | #include <asm/hardware.h> |
| 10 | #include <asm/leds.h> |
| 11 | #include <asm/system.h> |
| 12 | |
| 13 | #include "leds.h" |
| 14 | |
| 15 | |
| 16 | #define LED_STATE_ENABLED 1 |
| 17 | #define LED_STATE_CLAIMED 2 |
| 18 | |
| 19 | static unsigned int led_state; |
| 20 | static unsigned int hw_led_state; |
| 21 | |
| 22 | #define LED_D0 GPIO_GPIO(0) |
| 23 | #define LED_D1 GPIO_GPIO(1) |
| 24 | #define LED_D2 GPIO_GPIO(2) |
| 25 | #define LED_D3 GPIO_GPIO(3) |
| 26 | #define LED_MASK (LED_D0|LED_D1|LED_D2|LED_D3) |
| 27 | |
| 28 | void cerf_leds_event(led_event_t evt) |
| 29 | { |
| 30 | unsigned long flags; |
| 31 | |
| 32 | local_irq_save(flags); |
| 33 | |
| 34 | switch (evt) { |
| 35 | case led_start: |
| 36 | hw_led_state = LED_MASK; |
| 37 | led_state = LED_STATE_ENABLED; |
| 38 | break; |
| 39 | |
| 40 | case led_stop: |
| 41 | led_state &= ~LED_STATE_ENABLED; |
| 42 | break; |
| 43 | |
| 44 | case led_claim: |
| 45 | led_state |= LED_STATE_CLAIMED; |
| 46 | hw_led_state = LED_MASK; |
| 47 | break; |
| 48 | case led_release: |
| 49 | led_state &= ~LED_STATE_CLAIMED; |
| 50 | hw_led_state = LED_MASK; |
| 51 | break; |
| 52 | |
| 53 | #ifdef CONFIG_LEDS_TIMER |
| 54 | case led_timer: |
| 55 | if (!(led_state & LED_STATE_CLAIMED)) |
| 56 | hw_led_state ^= LED_D0; |
| 57 | break; |
| 58 | #endif |
| 59 | |
| 60 | #ifdef CONFIG_LEDS_CPU |
| 61 | case led_idle_start: |
| 62 | if (!(led_state & LED_STATE_CLAIMED)) |
| 63 | hw_led_state &= ~LED_D1; |
| 64 | break; |
| 65 | |
| 66 | case led_idle_end: |
| 67 | if (!(led_state & LED_STATE_CLAIMED)) |
| 68 | hw_led_state |= LED_D1; |
| 69 | break; |
| 70 | #endif |
| 71 | case led_green_on: |
| 72 | if (!(led_state & LED_STATE_CLAIMED)) |
| 73 | hw_led_state &= ~LED_D2; |
| 74 | break; |
| 75 | |
| 76 | case led_green_off: |
| 77 | if (!(led_state & LED_STATE_CLAIMED)) |
| 78 | hw_led_state |= LED_D2; |
| 79 | break; |
| 80 | |
| 81 | case led_amber_on: |
| 82 | if (!(led_state & LED_STATE_CLAIMED)) |
| 83 | hw_led_state &= ~LED_D3; |
| 84 | break; |
| 85 | |
| 86 | case led_amber_off: |
| 87 | if (!(led_state & LED_STATE_CLAIMED)) |
| 88 | hw_led_state |= LED_D3; |
| 89 | break; |
| 90 | |
| 91 | case led_red_on: |
| 92 | if (!(led_state & LED_STATE_CLAIMED)) |
| 93 | hw_led_state &= ~LED_D1; |
| 94 | break; |
| 95 | |
| 96 | case led_red_off: |
| 97 | if (!(led_state & LED_STATE_CLAIMED)) |
| 98 | hw_led_state |= LED_D1; |
| 99 | break; |
| 100 | |
| 101 | default: |
| 102 | break; |
| 103 | } |
| 104 | |
| 105 | if (led_state & LED_STATE_ENABLED) { |
| 106 | GPSR = hw_led_state; |
| 107 | GPCR = hw_led_state ^ LED_MASK; |
| 108 | } |
| 109 | |
| 110 | local_irq_restore(flags); |
| 111 | } |