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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/arch/arm/mach-footbridge/ebsa285.c
3 *
4 * EBSA285 machine fixup
5 */
6#include <linux/init.h>
Russell King70d13e02008-12-06 08:25:16 +00007#include <linux/spinlock.h>
Bryan Wucf6856d2012-03-14 02:05:24 +08008#include <linux/slab.h>
9#include <linux/leds.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010
11#include <asm/hardware/dec21285.h>
12#include <asm/mach-types.h>
13
14#include <asm/mach/arch.h>
15
16#include "common.h"
17
Bryan Wucf6856d2012-03-14 02:05:24 +080018/* LEDs */
19#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
20struct ebsa285_led {
21 struct led_classdev cdev;
22 u8 mask;
23};
24
25/*
26 * The triggers lines up below will only be used if the
27 * LED triggers are compiled in.
28 */
29static const struct {
30 const char *name;
31 const char *trigger;
32} ebsa285_leds[] = {
33 { "ebsa285:amber", "heartbeat", },
34 { "ebsa285:green", "cpu0", },
35 { "ebsa285:red",},
36};
37
38static void ebsa285_led_set(struct led_classdev *cdev,
39 enum led_brightness b)
40{
41 struct ebsa285_led *led = container_of(cdev,
42 struct ebsa285_led, cdev);
43
44 if (b != LED_OFF)
45 *XBUS_LEDS |= led->mask;
46 else
47 *XBUS_LEDS &= ~led->mask;
48}
49
50static enum led_brightness ebsa285_led_get(struct led_classdev *cdev)
51{
52 struct ebsa285_led *led = container_of(cdev,
53 struct ebsa285_led, cdev);
54
55 return (*XBUS_LEDS & led->mask) ? LED_FULL : LED_OFF;
56}
57
58static int __init ebsa285_leds_init(void)
59{
60 int i;
61
62 if (machine_is_ebsa285())
63 return -ENODEV;
64
65 /* 3 LEDS All ON */
66 *XBUS_LEDS |= XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED;
67
68 for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) {
69 struct ebsa285_led *led;
70
71 led = kzalloc(sizeof(*led), GFP_KERNEL);
72 if (!led)
73 break;
74
75 led->cdev.name = ebsa285_leds[i].name;
76 led->cdev.brightness_set = ebsa285_led_set;
77 led->cdev.brightness_get = ebsa285_led_get;
78 led->cdev.default_trigger = ebsa285_leds[i].trigger;
79 led->mask = BIT(i);
80
81 if (led_classdev_register(NULL, &led->cdev) < 0) {
82 kfree(led);
83 break;
84 }
85 }
86
87 return 0;
88}
89
90/*
91 * Since we may have triggers on any subsystem, defer registration
92 * until after subsystem_init.
93 */
94fs_initcall(ebsa285_leds_init);
95#endif
96
Linus Torvalds1da177e2005-04-16 15:20:36 -070097MACHINE_START(EBSA285, "EBSA285")
Russell Kinge9dea0c2005-07-03 17:38:58 +010098 /* Maintainer: Russell King */
Nicolas Pitre93ef8882011-07-05 22:38:11 -040099 .atag_offset = 0x100,
Russell Kinge9dea0c2005-07-03 17:38:58 +0100100 .video_start = 0x000a0000,
101 .video_end = 0x000bffff,
102 .map_io = footbridge_map_io,
103 .init_irq = footbridge_init_irq,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 .timer = &footbridge_timer,
Russell King6fca1e172011-11-03 19:47:54 +0000105 .restart = footbridge_restart,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106MACHINE_END
107