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authorYoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>2007-09-27 04:51:05 -0400
committerRichard Purdie <rpurdie@rpsys.net>2007-10-11 17:24:00 -0400
commit97da7aaf46fedcf1a38a88e5ffc2c40df23e8013 (patch)
tree4847421ab5c0b1a609d50b591b78217efbd344ac /drivers
parentf3b6b6cd00d294d50e1c3eee85964c69d898de45 (diff)
leds: Add Cobalt Raq series LEDs support
Add Cobalt Raq series LEDs support. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/leds/Kconfig7
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/leds-cobalt-raq.c138
3 files changed, 146 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 9b79bcd9bf11..3cb23210b912 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -93,6 +93,13 @@ config LEDS_COBALT_QUBE
93 help 93 help
94 This option enables support for the front LED on Cobalt Qube series 94 This option enables support for the front LED on Cobalt Qube series
95 95
96config LEDS_COBALT_RAQ
97 bool "LED Support for the Cobalt Raq series"
98 depends on LEDS_CLASS && MIPS_COBALT
99 select LEDS_TRIGGERS
100 help
101 This option enables support for the Cobalt Raq series LEDs.
102
96config LEDS_GPIO 103config LEDS_GPIO
97 tristate "LED Support for GPIO connected LEDs" 104 tristate "LED Support for GPIO connected LEDs"
98 depends on LEDS_CLASS && GENERIC_GPIO 105 depends on LEDS_CLASS && GENERIC_GPIO
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index 9b2684a20888..d2ca1abbc3d2 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
16obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o 16obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o
17obj-$(CONFIG_LEDS_H1940) += leds-h1940.o 17obj-$(CONFIG_LEDS_H1940) += leds-h1940.o
18obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o 18obj-$(CONFIG_LEDS_COBALT_QUBE) += leds-cobalt-qube.o
19obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
19obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o 20obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
20 21
21# LED Triggers 22# LED Triggers
diff --git a/drivers/leds/leds-cobalt-raq.c b/drivers/leds/leds-cobalt-raq.c
new file mode 100644
index 000000000000..6ebfff341e6c
--- /dev/null
+++ b/drivers/leds/leds-cobalt-raq.c
@@ -0,0 +1,138 @@
1/*
2 * LEDs driver for the Cobalt Raq series.
3 *
4 * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20#include <linux/init.h>
21#include <linux/io.h>
22#include <linux/ioport.h>
23#include <linux/leds.h>
24#include <linux/platform_device.h>
25#include <linux/spinlock.h>
26#include <linux/types.h>
27
28#define LED_WEB 0x04
29#define LED_POWER_OFF 0x08
30
31static void __iomem *led_port;
32static u8 led_value;
33static DEFINE_SPINLOCK(led_value_lock);
34
35static void raq_web_led_set(struct led_classdev *led_cdev,
36 enum led_brightness brightness)
37{
38 unsigned long flags;
39
40 spin_lock_irqsave(&led_value_lock, flags);
41
42 if (brightness)
43 led_value |= LED_WEB;
44 else
45 led_value &= ~LED_WEB;
46 writeb(led_value, led_port);
47
48 spin_unlock_irqrestore(&led_value_lock, flags);
49}
50
51static struct led_classdev raq_web_led = {
52 .name = "raq-web",
53 .brightness_set = raq_web_led_set,
54};
55
56static void raq_power_off_led_set(struct led_classdev *led_cdev,
57 enum led_brightness brightness)
58{
59 unsigned long flags;
60
61 spin_lock_irqsave(&led_value_lock, flags);
62
63 if (brightness)
64 led_value |= LED_POWER_OFF;
65 else
66 led_value &= ~LED_POWER_OFF;
67 writeb(led_value, led_port);
68
69 spin_unlock_irqrestore(&led_value_lock, flags);
70}
71
72static struct led_classdev raq_power_off_led = {
73 .name = "raq-power-off",
74 .brightness_set = raq_power_off_led_set,
75 .default_trigger = "power-off",
76};
77
78static int __devinit cobalt_raq_led_probe(struct platform_device *pdev)
79{
80 struct resource *res;
81 int retval;
82
83 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
84 if (!res)
85 return -EBUSY;
86
87 led_port = ioremap(res->start, res->end - res->start + 1);
88 if (!led_port)
89 return -ENOMEM;
90
91 retval = led_classdev_register(&pdev->dev, &raq_power_off_led);
92 if (retval)
93 goto err_iounmap;
94
95 retval = led_classdev_register(&pdev->dev, &raq_web_led);
96 if (retval)
97 goto err_unregister;
98
99 return 0;
100
101err_unregister:
102 led_classdev_unregister(&raq_power_off_led);
103
104err_iounmap:
105 iounmap(led_port);
106 led_port = NULL;
107
108 return retval;
109}
110
111static int __devexit cobalt_raq_led_remove(struct platform_device *pdev)
112{
113 led_classdev_unregister(&raq_power_off_led);
114 led_classdev_unregister(&raq_web_led);
115
116 if (led_port) {
117 iounmap(led_port);
118 led_port = NULL;
119 }
120
121 return 0;
122}
123
124static struct platform_driver cobalt_raq_led_driver = {
125 .probe = cobalt_raq_led_probe,
126 .remove = __devexit_p(cobalt_raq_led_remove),
127 .driver = {
128 .name = "cobalt-raq-leds",
129 .owner = THIS_MODULE,
130 },
131};
132
133static int __init cobalt_raq_led_init(void)
134{
135 return platform_driver_register(&cobalt_raq_led_driver);
136}
137
138module_init(cobalt_raq_led_init);