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gerrit-public.fairphone.software / kernel / msm-4.9 / 3b8e285c21d12082a85a142ef73a1648d41cae46 / . / arch / arm / mach-pxa / leds-lubbock.c
blob: e26d5efe196972c0c0ac299ca81e5e42bbddc459 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]14#include <linux/init.h>
15
Russell Kinga09e64f2008-08-05 16:14:15 +0100[diff] [blame]16#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]17#include <asm/leds.h>
18#include <asm/system.h>
Eric Miao51c62982009-01-02 23:17:22 +0800[diff] [blame]19#include <mach/pxa25x.h>
Russell Kinga09e64f2008-08-05 16:14:15 +0100[diff] [blame]20#include <mach/lubbock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
43static unsigned int led_state;
44static unsigned int hw_led_state;
45
46void 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}