2 * linux/arch/arm/mach-pxa/leds-idp.c
4 * Copyright (C) 2000 John Dorsey <john+@cs.cmu.edu>
6 * Copyright (c) 2001 Jeff Sutherland <jeffs@accelent.com>
8 * Original (leds-footbridge.c) by Russell King
10 * Macros for actual LED manipulation should be in machine specific
11 * files in this 'mach' directory.
15 #include <linux/config.h>
16 #include <linux/init.h>
18 #include <asm/hardware.h>
20 #include <asm/system.h>
24 #define LED_STATE_ENABLED 1
25 #define LED_STATE_CLAIMED 2
27 static unsigned int led_state;
28 static unsigned int hw_led_state;
30 void idp_leds_event(led_event_t evt)
34 local_irq_save(flags);
38 hw_led_state = IDP_HB_LED | IDP_BUSY_LED;
39 led_state = LED_STATE_ENABLED;
43 led_state &= ~LED_STATE_ENABLED;
47 led_state |= LED_STATE_CLAIMED;
48 hw_led_state = IDP_HB_LED | IDP_BUSY_LED;
52 led_state &= ~LED_STATE_CLAIMED;
53 hw_led_state = IDP_HB_LED | IDP_BUSY_LED;
56 #ifdef CONFIG_LEDS_TIMER
58 if (!(led_state & LED_STATE_CLAIMED))
59 hw_led_state ^= IDP_HB_LED;
63 #ifdef CONFIG_LEDS_CPU
65 if (!(led_state & LED_STATE_CLAIMED))
66 hw_led_state |= IDP_BUSY_LED;
70 if (!(led_state & LED_STATE_CLAIMED))
71 hw_led_state &= ~IDP_BUSY_LED;
79 if (led_state & LED_STATE_CLAIMED)
80 hw_led_state &= ~IDP_HB_LED;
84 if (led_state & LED_STATE_CLAIMED)
85 hw_led_state |= IDP_HB_LED;
95 if (led_state & LED_STATE_CLAIMED)
96 hw_led_state &= ~IDP_BUSY_LED;
100 if (led_state & LED_STATE_CLAIMED)
101 hw_led_state |= IDP_BUSY_LED;
108 if (led_state & LED_STATE_ENABLED)
109 IDP_WRITE_LEDS(hw_led_state);
111 local_irq_restore(flags);