| /* |
| * linux/arch/arm/mach-pxa/leds-lubbock.c |
| * |
| * Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu> |
| * |
| * Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com> |
| * |
| * Original (leds-footbridge.c) by Russell King |
| * |
| * Major surgery on April 2004 by Nicolas Pitre for less global |
| * namespace collision. Mostly adapted the Mainstone version. |
| */ |
| |
| #include <linux/init.h> |
| |
| #include <asm/arch/hardware.h> |
| #include <asm/leds.h> |
| #include <asm/system.h> |
| #include <asm/arch/pxa-regs.h> |
| #include <asm/arch/lubbock.h> |
| |
| #include "leds.h" |
| |
| /* |
| * 8 discrete leds available for general use: |
| * |
| * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays |
| * so be sure to not monkey with them here. |
| */ |
| |
| #define D28 (1 << 0) |
| #define D27 (1 << 1) |
| #define D26 (1 << 2) |
| #define D25 (1 << 3) |
| #define D24 (1 << 4) |
| #define D23 (1 << 5) |
| #define D22 (1 << 6) |
| #define D21 (1 << 7) |
| |
| #define LED_STATE_ENABLED 1 |
| #define LED_STATE_CLAIMED 2 |
| |
| static unsigned int led_state; |
| static unsigned int hw_led_state; |
| |
| void lubbock_leds_event(led_event_t evt) |
| { |
| unsigned long flags; |
| |
| local_irq_save(flags); |
| |
| switch (evt) { |
| case led_start: |
| hw_led_state = 0; |
| led_state = LED_STATE_ENABLED; |
| break; |
| |
| case led_stop: |
| led_state &= ~LED_STATE_ENABLED; |
| break; |
| |
| case led_claim: |
| led_state |= LED_STATE_CLAIMED; |
| hw_led_state = 0; |
| break; |
| |
| case led_release: |
| led_state &= ~LED_STATE_CLAIMED; |
| hw_led_state = 0; |
| break; |
| |
| #ifdef CONFIG_LEDS_TIMER |
| case led_timer: |
| hw_led_state ^= D26; |
| break; |
| #endif |
| |
| #ifdef CONFIG_LEDS_CPU |
| case led_idle_start: |
| hw_led_state &= ~D27; |
| break; |
| |
| case led_idle_end: |
| hw_led_state |= D27; |
| break; |
| #endif |
| |
| case led_halted: |
| break; |
| |
| case led_green_on: |
| hw_led_state |= D21; |
| break; |
| |
| case led_green_off: |
| hw_led_state &= ~D21; |
| break; |
| |
| case led_amber_on: |
| hw_led_state |= D22; |
| break; |
| |
| case led_amber_off: |
| hw_led_state &= ~D22; |
| break; |
| |
| case led_red_on: |
| hw_led_state |= D23; |
| break; |
| |
| case led_red_off: |
| hw_led_state &= ~D23; |
| break; |
| |
| default: |
| break; |
| } |
| |
| if (led_state & LED_STATE_ENABLED) |
| LUB_DISC_BLNK_LED = (LUB_DISC_BLNK_LED | 0xff) & ~hw_led_state; |
| else |
| LUB_DISC_BLNK_LED |= 0xff; |
| |
| local_irq_restore(flags); |
| } |