| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-pxa/leds-mainstone.c |
| 3 | * |
| 4 | * Author: Nicolas Pitre |
| 5 | * Created: Nov 05, 2002 |
| 6 | * Copyright: MontaVista Software Inc. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/init.h> |
| 14 | |
| 15 | #include <mach/hardware.h> |
| 16 | #include <asm/leds.h> |
| 17 | |
| 18 | #include <mach/pxa27x.h> |
| 19 | #include <mach/mainstone.h> |
| 20 | |
| 21 | #include "leds.h" |
| 22 | |
| 23 | |
| 24 | /* 8 discrete leds available for general use: */ |
| 25 | #define D28 (1 << 0) |
| 26 | #define D27 (1 << 1) |
| 27 | #define D26 (1 << 2) |
| 28 | #define D25 (1 << 3) |
| 29 | #define D24 (1 << 4) |
| 30 | #define D23 (1 << 5) |
| 31 | #define D22 (1 << 6) |
| 32 | #define D21 (1 << 7) |
| 33 | |
| 34 | #define LED_STATE_ENABLED 1 |
| 35 | #define LED_STATE_CLAIMED 2 |
| 36 | |
| 37 | static unsigned int led_state; |
| 38 | static unsigned int hw_led_state; |
| 39 | |
| 40 | void mainstone_leds_event(led_event_t evt) |
| 41 | { |
| 42 | unsigned long flags; |
| 43 | |
| 44 | local_irq_save(flags); |
| 45 | |
| 46 | switch (evt) { |
| 47 | case led_start: |
| 48 | hw_led_state = 0; |
| 49 | led_state = LED_STATE_ENABLED; |
| 50 | break; |
| 51 | |
| 52 | case led_stop: |
| 53 | led_state &= ~LED_STATE_ENABLED; |
| 54 | break; |
| 55 | |
| 56 | case led_claim: |
| 57 | led_state |= LED_STATE_CLAIMED; |
| 58 | hw_led_state = 0; |
| 59 | break; |
| 60 | |
| 61 | case led_release: |
| 62 | led_state &= ~LED_STATE_CLAIMED; |
| 63 | hw_led_state = 0; |
| 64 | break; |
| 65 | |
| 66 | #ifdef CONFIG_LEDS_TIMER |
| 67 | case led_timer: |
| 68 | hw_led_state ^= D26; |
| 69 | break; |
| 70 | #endif |
| 71 | |
| 72 | #ifdef CONFIG_LEDS_CPU |
| 73 | case led_idle_start: |
| 74 | hw_led_state &= ~D27; |
| 75 | break; |
| 76 | |
| 77 | case led_idle_end: |
| 78 | hw_led_state |= D27; |
| 79 | break; |
| 80 | #endif |
| 81 | |
| 82 | case led_halted: |
| 83 | break; |
| 84 | |
| 85 | case led_green_on: |
| 86 | hw_led_state |= D21; |
| 87 | break; |
| 88 | |
| 89 | case led_green_off: |
| 90 | hw_led_state &= ~D21; |
| 91 | break; |
| 92 | |
| 93 | case led_amber_on: |
| 94 | hw_led_state |= D22; |
| 95 | break; |
| 96 | |
| 97 | case led_amber_off: |
| 98 | hw_led_state &= ~D22; |
| 99 | break; |
| 100 | |
| 101 | case led_red_on: |
| 102 | hw_led_state |= D23; |
| 103 | break; |
| 104 | |
| 105 | case led_red_off: |
| 106 | hw_led_state &= ~D23; |
| 107 | break; |
| 108 | |
| 109 | default: |
| 110 | break; |
| 111 | } |
| 112 | |
| 113 | if (led_state & LED_STATE_ENABLED) |
| 114 | MST_LEDCTRL = (MST_LEDCTRL | 0xff) & ~hw_led_state; |
| 115 | else |
| 116 | MST_LEDCTRL |= 0xff; |
| 117 | |
| 118 | local_irq_restore(flags); |
| 119 | } |