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gerrit-public.fairphone.software / kernel / msm / f3173047d1f67f8bb150ca41380c270626ab2639 / . / arch / arm / mach-pxa / leds-idp.c
blob: 06b060025d11f3d63607434c40628ffc25ffa917 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/*
2 * linux/arch/arm/mach-pxa/leds-idp.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 * Macros for actual LED manipulation should be in machine specific
11 * files in this 'mach' directory.
12 */
13
14
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]15#include <linux/init.h>
16
Russell Kinga09e64f2008-08-05 16:14:15 +0100[diff] [blame]17#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]18#include <asm/leds.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]19
Eric Miao51c62982009-01-02 23:17:22 +0800[diff] [blame]20#include <mach/pxa25x.h>
Russell Kinga09e64f2008-08-05 16:14:15 +0100[diff] [blame]21#include <mach/idp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]22
23#include "leds.h"
24
25#define LED_STATE_ENABLED 1
26#define LED_STATE_CLAIMED 2
27
28static unsigned int led_state;
29static unsigned int hw_led_state;
30
31void idp_leds_event(led_event_t evt)
32{
33 unsigned long flags;
34
35 local_irq_save(flags);
36
37 switch (evt) {
38 case led_start:
39 hw_led_state = IDP_HB_LED | IDP_BUSY_LED;
40 led_state = LED_STATE_ENABLED;
41 break;
42
43 case led_stop:
44 led_state &= ~LED_STATE_ENABLED;
45 break;
46
47 case led_claim:
48 led_state |= LED_STATE_CLAIMED;
49 hw_led_state = IDP_HB_LED | IDP_BUSY_LED;
50 break;
51
52 case led_release:
53 led_state &= ~LED_STATE_CLAIMED;
54 hw_led_state = IDP_HB_LED | IDP_BUSY_LED;
55 break;
56
57#ifdef CONFIG_LEDS_TIMER
58 case led_timer:
59 if (!(led_state & LED_STATE_CLAIMED))
60 hw_led_state ^= IDP_HB_LED;
61 break;
62#endif
63
64#ifdef CONFIG_LEDS_CPU
65 case led_idle_start:
66 if (!(led_state & LED_STATE_CLAIMED))
67 hw_led_state &= ~IDP_BUSY_LED;
68 break;
69
70 case led_idle_end:
71 if (!(led_state & LED_STATE_CLAIMED))
72 hw_led_state |= IDP_BUSY_LED;
73 break;
74#endif
75
76 case led_halted:
77 break;
78
79 case led_green_on:
80 if (led_state & LED_STATE_CLAIMED)
81 hw_led_state |= IDP_HB_LED;
82 break;
83
84 case led_green_off:
85 if (led_state & LED_STATE_CLAIMED)
86 hw_led_state &= ~IDP_HB_LED;
87 break;
88
89 case led_amber_on:
90 break;
91
92 case led_amber_off:
93 break;
94
95 case led_red_on:
96 if (led_state & LED_STATE_CLAIMED)
97 hw_led_state |= IDP_BUSY_LED;
98 break;
99
100 case led_red_off:
101 if (led_state & LED_STATE_CLAIMED)
102 hw_led_state &= ~IDP_BUSY_LED;
103 break;
104
105 default:
106 break;
107 }
108
109 if (led_state & LED_STATE_ENABLED)
110 IDP_CPLD_LED_CONTROL = ( (IDP_CPLD_LED_CONTROL | IDP_LEDS_MASK) & ~hw_led_state);
111 else
112 IDP_CPLD_LED_CONTROL |= IDP_LEDS_MASK;
113
114 local_irq_restore(flags);
115}