projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| 1da177e4 LT |
14 | #include <linux/init.h> |
| 15 | ||
| a09e64fb | 16 | #include <mach/hardware.h> |
| 1da177e4 LT |
17 | #include <asm/leds.h> |
| 18 | #include <asm/system.h> | |
| a09e64fb RK |
19 | #include <mach/pxa-regs.h> |
| 20 | #include <mach/lubbock.h> | |
| 1da177e4 LT |
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 | } |