| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-pxa/leds-lubbock.c |
| 3 | * |
| 4 | * Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu> |
| 5 | * |
| 6 | * Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com> |
| 7 | * |
| 8 | * Original (leds-footbridge.c) by Russell King |
| 9 | * |
| 10 | * Major surgery on April 2004 by Nicolas Pitre for less global |
| 11 | * namespace collision. Mostly adapted the Mainstone version. |
| 12 | */ |
| 13 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/init.h> |
| 15 | |
| 16 | #include <asm/hardware.h> |
| 17 | #include <asm/leds.h> |
| 18 | #include <asm/system.h> |
| 19 | #include <asm/arch/pxa-regs.h> |
| 20 | #include <asm/arch/lubbock.h> |
| 21 | |
| 22 | #include "leds.h" |
| 23 | |
| 24 | /* |
| 25 | * 8 discrete leds available for general use: |
| 26 | * |
| 27 | * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays |
| 28 | * so be sure to not monkey with them here. |
| 29 | */ |
| 30 | |
| 31 | #define D28 (1 << 0) |
| 32 | #define D27 (1 << 1) |
| 33 | #define D26 (1 << 2) |
| 34 | #define D25 (1 << 3) |
| 35 | #define D24 (1 << 4) |
| 36 | #define D23 (1 << 5) |
| 37 | #define D22 (1 << 6) |
| 38 | #define D21 (1 << 7) |
| 39 | |
| 40 | #define LED_STATE_ENABLED 1 |
| 41 | #define LED_STATE_CLAIMED 2 |
| 42 | |
| 43 | static unsigned int led_state; |
| 44 | static unsigned int hw_led_state; |
| 45 | |
| 46 | void lubbock_leds_event(led_event_t evt) |
| 47 | { |
| 48 | unsigned long flags; |
| 49 | |
| 50 | local_irq_save(flags); |
| 51 | |
| 52 | switch (evt) { |
| 53 | case led_start: |
| 54 | hw_led_state = 0; |
| 55 | led_state = LED_STATE_ENABLED; |
| 56 | break; |
| 57 | |
| 58 | case led_stop: |
| 59 | led_state &= ~LED_STATE_ENABLED; |
| 60 | break; |
| 61 | |
| 62 | case led_claim: |
| 63 | led_state |= LED_STATE_CLAIMED; |
| 64 | hw_led_state = 0; |
| 65 | break; |
| 66 | |
| 67 | case led_release: |
| 68 | led_state &= ~LED_STATE_CLAIMED; |
| 69 | hw_led_state = 0; |
| 70 | break; |
| 71 | |
| 72 | #ifdef CONFIG_LEDS_TIMER |
| 73 | case led_timer: |
| 74 | hw_led_state ^= D26; |
| 75 | break; |
| 76 | #endif |
| 77 | |
| 78 | #ifdef CONFIG_LEDS_CPU |
| 79 | case led_idle_start: |
| 80 | hw_led_state &= ~D27; |
| 81 | break; |
| 82 | |
| 83 | case led_idle_end: |
| 84 | hw_led_state |= D27; |
| 85 | break; |
| 86 | #endif |
| 87 | |
| 88 | case led_halted: |
| 89 | break; |
| 90 | |
| 91 | case led_green_on: |
| 92 | hw_led_state |= D21; |
| 93 | break; |
| 94 | |
| 95 | case led_green_off: |
| 96 | hw_led_state &= ~D21; |
| 97 | break; |
| 98 | |
| 99 | case led_amber_on: |
| 100 | hw_led_state |= D22; |
| 101 | break; |
| 102 | |
| 103 | case led_amber_off: |
| 104 | hw_led_state &= ~D22; |
| 105 | break; |
| 106 | |
| 107 | case led_red_on: |
| 108 | hw_led_state |= D23; |
| 109 | break; |
| 110 | |
| 111 | case led_red_off: |
| 112 | hw_led_state &= ~D23; |
| 113 | break; |
| 114 | |
| 115 | default: |
| 116 | break; |
| 117 | } |
| 118 | |
| 119 | if (led_state & LED_STATE_ENABLED) |
| 120 | LUB_DISC_BLNK_LED = (LUB_DISC_BLNK_LED | 0xff) & ~hw_led_state; |
| 121 | else |
| 122 | LUB_DISC_BLNK_LED |= 0xff; |
| 123 | |
| 124 | local_irq_restore(flags); |
| 125 | } |