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gerrit-public.fairphone.software / kernel / msm-4.9 / 038b0a6d8d32db934bba6a24e74e76e4e327a94f / . / arch / arm / mach-pxa / leds-trizeps4.c
blob: 2271d20ffedaf7dc1abc1dc64ba747aa91e8c762 [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
15#include <asm/hardware.h>
16#include <asm/system.h>
17#include <asm/types.h>
18#include <asm/leds.h>
19
20#include <asm/arch/pxa-regs.h>
21#include <asm/arch/trizeps4.h>
22
23#include "leds.h"
24
25#define LED_STATE_ENABLED 1
26#define LED_STATE_CLAIMED 2
27
28#define SYS_BUSY 0x01
29#define HEARTBEAT 0x02
30#define BLINK 0x04
31
32static unsigned int led_state;
33static unsigned int hw_led_state;
34
35void trizeps4_leds_event(led_event_t evt)
36{
37 unsigned long flags;
38
39 local_irq_save(flags);
40
41 switch (evt) {
42 case led_start:
43 hw_led_state = 0;
44 pxa_gpio_mode( GPIO_SYS_BUSY_LED | GPIO_OUT); /* LED1 */
45 pxa_gpio_mode( GPIO_HEARTBEAT_LED | GPIO_OUT); /* LED2 */
46 led_state = LED_STATE_ENABLED;
47 break;
48
49 case led_stop:
50 led_state &= ~LED_STATE_ENABLED;
51 break;
52
53 case led_claim:
54 led_state |= LED_STATE_CLAIMED;
55 hw_led_state = 0;
56 break;
57
58 case led_release:
59 led_state &= ~LED_STATE_CLAIMED;
60 hw_led_state = 0;
61 break;
62
63#ifdef CONFIG_LEDS_TIMER
64 case led_timer:
65 hw_led_state ^= HEARTBEAT;
66 break;
67#endif
68
69#ifdef CONFIG_LEDS_CPU
70 case led_idle_start:
71 hw_led_state &= ~SYS_BUSY;
72 break;
73
74 case led_idle_end:
75 hw_led_state |= SYS_BUSY;
76 break;
77#endif
78
79 case led_halted:
80 break;
81
82 case led_green_on:
83 hw_led_state |= BLINK;
84 break;
85
86 case led_green_off:
87 hw_led_state &= ~BLINK;
88 break;
89
90 case led_amber_on:
91 break;
92
93 case led_amber_off:
94 break;
95
96 case led_red_on:
97 break;
98
99 case led_red_off:
100 break;
101
102 default:
103 break;
104 }
105
106 if (led_state & LED_STATE_ENABLED) {
107 switch (hw_led_state) {
108 case 0:
109 GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
110 GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
111 break;
112 case 1:
113 GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
114 GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
115 break;
116 case 2:
117 GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
118 GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
119 break;
120 case 3:
121 GPCR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
122 GPCR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
123 break;
124 }
125 }
126 else {
127 /* turn all off */
128 GPSR(GPIO_SYS_BUSY_LED) |= GPIO_bit(GPIO_SYS_BUSY_LED);
129 GPSR(GPIO_HEARTBEAT_LED) |= GPIO_bit(GPIO_HEARTBEAT_LED);
130 }
131
132 local_irq_restore(flags);
133}