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gerrit-public.fairphone.software / kernel / msm / 4a18625e88efef2b5a21695edcb2b21d98fdf71b / . / arch / arm / mach-pxa / leds-trizeps4.c
blob: 3bc29007df3a5f209aec0bd83fd6978ba0ab2f6c [file] [log] [blame]
Jürgen Schindele326764a2006-06-29 16:01:43 +0100[diff] [blame]1/*
2 * linux/arch/arm/mach-pxa/leds-trizeps4.c
3 *
4 * Author: Jürgen Schindele
5 * Created: 20 02, 2006
6 * Copyright: Jürgen Schindele
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
Jürgen Schindele326764a2006-06-29 16:01:43 +0100[diff] [blame]13#include <linux/init.h>
14
Russell Kinga09e64f2008-08-05 16:14:15 +0100[diff] [blame]15#include <mach/hardware.h>
Jürgen Schindele326764a2006-06-29 16:01:43 +0100[diff] [blame]16#include <asm/system.h>
17#include <asm/types.h>
18#include <asm/leds.h>
19
Russell Kinga09e64f2008-08-05 16:14:15 +0100[diff] [blame]20#include <mach/pxa-regs.h>
21#include <mach/pxa2xx-gpio.h>
22#include <mach/trizeps4.h>
Jürgen Schindele326764a2006-06-29 16:01:43 +0100[diff] [blame]23
24#include "leds.h"
25
26#define LED_STATE_ENABLED 1
27#define LED_STATE_CLAIMED 2
28
29#define SYS_BUSY 0x01
30#define HEARTBEAT 0x02
31#define BLINK 0x04
32
33static unsigned int led_state;
34static unsigned int hw_led_state;
35
36void trizeps4_leds_event(led_event_t evt)
37{
38 unsigned long flags;
39
40 local_irq_save(flags);
41
42 switch (evt) {
43 case led_start:
44 hw_led_state = 0;
45 pxa_gpio_mode( GPIO_SYS_BUSY_LED | GPIO_OUT); /* LED1 */
46 pxa_gpio_mode( GPIO_HEARTBEAT_LED | GPIO_OUT); /* LED2 */
47 led_state = LED_STATE_ENABLED;
48 break;
49
50 case led_stop:
51 led_state &= ~LED_STATE_ENABLED;
52 break;
53
54 case led_claim:
55 led_state |= LED_STATE_CLAIMED;
56 hw_led_state = 0;
57 break;
58
59 case led_release:
60 led_state &= ~LED_STATE_CLAIMED;
61 hw_led_state = 0;
62 break;
63
64#ifdef CONFIG_LEDS_TIMER
65 case led_timer:
66 hw_led_state ^= HEARTBEAT;
67 break;
68#endif
69
70#ifdef CONFIG_LEDS_CPU
71 case led_idle_start:
72 hw_led_state &= ~SYS_BUSY;
73 break;
74
75 case led_idle_end:
76 hw_led_state |= SYS_BUSY;
77 break;
78#endif
79
80 case led_halted:
81 break;
82
83 case led_green_on:
84 hw_led_state |= BLINK;
85 break;
86
87 case led_green_off:
88 hw_led_state &= ~BLINK;
89 break;
90
91 case led_amber_on:
92 break;
93
94 case led_amber_off:
95 break;
96
97 case led_red_on:
98 break;
99
100 case led_red_off:
101 break;
102
103 default:
104 break;
105 }
106
107 if (led_state & LED_STATE_ENABLED) {
108 switch (hw_led_state) {
109 case 0:
110 GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
111 GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
112 break;
113 case 1:
114 GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
115 GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
116 break;
117 case 2:
118 GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
119 GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
120 break;
121 case 3:
122 GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
123 GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
124 break;
125 }
126 }
127 else {
128 /* turn all off */
129 GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
130 GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
131 }
132
133 local_irq_restore(flags);
134}