projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/arch/arm/mach-sa1100/leds-cerf.c | |
| 3 | * | |
| 4 | * Author: ??? | |
| 5 | */ | |
| 1da177e4 LT |
6 | #include <linux/init.h> |
| 7 | ||
| a09e64fb | 8 | #include <mach/hardware.h> |
| 1da177e4 LT |
9 | #include <asm/leds.h> |
| 10 | #include <asm/system.h> | |
| 11 | ||
| 12 | #include "leds.h" | |
| 13 | ||
| 14 | ||
| 15 | #define LED_STATE_ENABLED 1 | |
| 16 | #define LED_STATE_CLAIMED 2 | |
| 17 | ||
| 18 | static unsigned int led_state; | |
| 19 | static unsigned int hw_led_state; | |
| 20 | ||
| 21 | #define LED_D0 GPIO_GPIO(0) | |
| 22 | #define LED_D1 GPIO_GPIO(1) | |
| 23 | #define LED_D2 GPIO_GPIO(2) | |
| 24 | #define LED_D3 GPIO_GPIO(3) | |
| 25 | #define LED_MASK (LED_D0|LED_D1|LED_D2|LED_D3) | |
| 26 | ||
| 27 | void cerf_leds_event(led_event_t evt) | |
| 28 | { | |
| 29 | unsigned long flags; | |
| 30 | ||
| 31 | local_irq_save(flags); | |
| 32 | ||
| 33 | switch (evt) { | |
| 34 | case led_start: | |
| 35 | hw_led_state = LED_MASK; | |
| 36 | led_state = LED_STATE_ENABLED; | |
| 37 | break; | |
| 38 | ||
| 39 | case led_stop: | |
| 40 | led_state &= ~LED_STATE_ENABLED; | |
| 41 | break; | |
| 42 | ||
| 43 | case led_claim: | |
| 44 | led_state |= LED_STATE_CLAIMED; | |
| 45 | hw_led_state = LED_MASK; | |
| 46 | break; | |
| 47 | case led_release: | |
| 48 | led_state &= ~LED_STATE_CLAIMED; | |
| 49 | hw_led_state = LED_MASK; | |
| 50 | break; | |
| 51 | ||
| 52 | #ifdef CONFIG_LEDS_TIMER | |
| 53 | case led_timer: | |
| 54 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 55 | hw_led_state ^= LED_D0; | |
| 56 | break; | |
| 57 | #endif | |
| 58 | ||
| 59 | #ifdef CONFIG_LEDS_CPU | |
| 60 | case led_idle_start: | |
| 61 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 62 | hw_led_state &= ~LED_D1; | |
| 63 | break; | |
| 64 | ||
| 65 | case led_idle_end: | |
| 66 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 67 | hw_led_state |= LED_D1; | |
| 68 | break; | |
| 69 | #endif | |
| 70 | case led_green_on: | |
| 71 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 72 | hw_led_state &= ~LED_D2; | |
| 73 | break; | |
| 74 | ||
| 75 | case led_green_off: | |
| 76 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 77 | hw_led_state |= LED_D2; | |
| 78 | break; | |
| 79 | ||
| 80 | case led_amber_on: | |
| 81 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 82 | hw_led_state &= ~LED_D3; | |
| 83 | break; | |
| 84 | ||
| 85 | case led_amber_off: | |
| 86 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 87 | hw_led_state |= LED_D3; | |
| 88 | break; | |
| 89 | ||
| 90 | case led_red_on: | |
| 91 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 92 | hw_led_state &= ~LED_D1; | |
| 93 | break; | |
| 94 | ||
| 95 | case led_red_off: | |
| 96 | if (!(led_state & LED_STATE_CLAIMED)) | |
| 97 | hw_led_state |= LED_D1; | |
| 98 | break; | |
| 99 | ||
| 100 | default: | |
| 101 | break; | |
| 102 | } | |
| 103 | ||
| 104 | if (led_state & LED_STATE_ENABLED) { | |
| 105 | GPSR = hw_led_state; | |
| 106 | GPCR = hw_led_state ^ LED_MASK; | |
| 107 | } | |
| 108 | ||
| 109 | local_irq_restore(flags); | |
| 110 | } |