diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-22 14:22:01 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-22 14:22:01 -0400 |
commit | d7f5e3df3574c6e38b99f5fe22f15540b2b9811d (patch) | |
tree | 75fc060628490d4bc78dd3b92635b8437b6e4290 | |
parent | 2fe83b3ad12d43799af5f3156886eca443a88bac (diff) | |
parent | f8a7c6fe14f556ca8eeddce258cb21392d0c3a2f (diff) |
Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
leds: Convert from struct class_device to struct device
leds: leds-gpio for ngw100
leds: Add warning printks in error paths
leds: Fix trigger unregister_simple if register_simple fails
leds: Use menuconfig objects II - LED
leds: Teach leds-gpio to handle timer-unsafe GPIOs
leds: Add generic GPIO LED driver
-rw-r--r-- | arch/avr32/boards/atngw100/setup.c | 31 | ||||
-rw-r--r-- | arch/avr32/configs/atngw100_defconfig | 16 | ||||
-rw-r--r-- | drivers/leds/Kconfig | 22 | ||||
-rw-r--r-- | drivers/leds/Makefile | 1 | ||||
-rw-r--r-- | drivers/leds/led-class.c | 49 | ||||
-rw-r--r-- | drivers/leds/led-triggers.c | 27 | ||||
-rw-r--r-- | drivers/leds/leds-gpio.c | 199 | ||||
-rw-r--r-- | drivers/leds/leds-locomo.c | 2 | ||||
-rw-r--r-- | drivers/leds/leds.h | 8 | ||||
-rw-r--r-- | drivers/leds/ledtrig-timer.c | 49 | ||||
-rw-r--r-- | include/linux/leds.h | 17 |
11 files changed, 343 insertions, 78 deletions
diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c index 6c4dc0a00e9f..2edcecdea8bd 100644 --- a/arch/avr32/boards/atngw100/setup.c +++ b/arch/avr32/boards/atngw100/setup.c | |||
@@ -13,6 +13,7 @@ | |||
13 | #include <linux/linkage.h> | 13 | #include <linux/linkage.h> |
14 | #include <linux/platform_device.h> | 14 | #include <linux/platform_device.h> |
15 | #include <linux/types.h> | 15 | #include <linux/types.h> |
16 | #include <linux/leds.h> | ||
16 | #include <linux/spi/spi.h> | 17 | #include <linux/spi/spi.h> |
17 | 18 | ||
18 | #include <asm/io.h> | 19 | #include <asm/io.h> |
@@ -21,6 +22,7 @@ | |||
21 | #include <asm/arch/at32ap7000.h> | 22 | #include <asm/arch/at32ap7000.h> |
22 | #include <asm/arch/board.h> | 23 | #include <asm/arch/board.h> |
23 | #include <asm/arch/init.h> | 24 | #include <asm/arch/init.h> |
25 | #include <asm/arch/portmux.h> | ||
24 | 26 | ||
25 | /* Initialized by bootloader-specific startup code. */ | 27 | /* Initialized by bootloader-specific startup code. */ |
26 | struct tag *bootloader_tags __initdata; | 28 | struct tag *bootloader_tags __initdata; |
@@ -100,8 +102,31 @@ void __init setup_board(void) | |||
100 | at32_setup_serial_console(0); | 102 | at32_setup_serial_console(0); |
101 | } | 103 | } |
102 | 104 | ||
105 | static const struct gpio_led ngw_leds[] = { | ||
106 | { .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1, | ||
107 | .default_trigger = "heartbeat", | ||
108 | }, | ||
109 | { .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, }, | ||
110 | { .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, }, | ||
111 | }; | ||
112 | |||
113 | static const struct gpio_led_platform_data ngw_led_data = { | ||
114 | .num_leds = ARRAY_SIZE(ngw_leds), | ||
115 | .leds = (void *) ngw_leds, | ||
116 | }; | ||
117 | |||
118 | static struct platform_device ngw_gpio_leds = { | ||
119 | .name = "leds-gpio", | ||
120 | .id = -1, | ||
121 | .dev = { | ||
122 | .platform_data = (void *) &ngw_led_data, | ||
123 | } | ||
124 | }; | ||
125 | |||
103 | static int __init atngw100_init(void) | 126 | static int __init atngw100_init(void) |
104 | { | 127 | { |
128 | unsigned i; | ||
129 | |||
105 | /* | 130 | /* |
106 | * ATNGW100 uses 16-bit SDRAM interface, so we don't need to | 131 | * ATNGW100 uses 16-bit SDRAM interface, so we don't need to |
107 | * reserve any pins for it. | 132 | * reserve any pins for it. |
@@ -116,6 +141,12 @@ static int __init atngw100_init(void) | |||
116 | 141 | ||
117 | at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info)); | 142 | at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info)); |
118 | 143 | ||
144 | for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) { | ||
145 | at32_select_gpio(ngw_leds[i].gpio, | ||
146 | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH); | ||
147 | } | ||
148 | platform_device_register(&ngw_gpio_leds); | ||
149 | |||
119 | return 0; | 150 | return 0; |
120 | } | 151 | } |
121 | postcore_initcall(atngw100_init); | 152 | postcore_initcall(atngw100_init); |
diff --git a/arch/avr32/configs/atngw100_defconfig b/arch/avr32/configs/atngw100_defconfig index 49493ad3b5a9..b799a68ffd97 100644 --- a/arch/avr32/configs/atngw100_defconfig +++ b/arch/avr32/configs/atngw100_defconfig | |||
@@ -712,7 +712,21 @@ CONFIG_SPI_ATMEL=y | |||
712 | # | 712 | # |
713 | # LED devices | 713 | # LED devices |
714 | # | 714 | # |
715 | # CONFIG_NEW_LEDS is not set | 715 | CONFIG_NEW_LEDS=y |
716 | CONFIG_LEDS_CLASS=y | ||
717 | |||
718 | # | ||
719 | # LED drivers | ||
720 | # | ||
721 | CONFIG_LEDS_GPIO=y | ||
722 | |||
723 | # | ||
724 | # LED Triggers | ||
725 | # | ||
726 | CONFIG_LEDS_TRIGGERS=y | ||
727 | CONFIG_LEDS_TRIGGER_TIMER=y | ||
728 | CONFIG_LEDS_TRIGGER_HEARTBEAT=y | ||
729 | |||
716 | 730 | ||
717 | # | 731 | # |
718 | # LED drivers | 732 | # LED drivers |
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 87d2046f866c..4468cb3a8d24 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig | |||
@@ -1,9 +1,6 @@ | |||
1 | 1 | menuconfig NEW_LEDS | |
2 | menu "LED devices" | ||
3 | depends on HAS_IOMEM | ||
4 | |||
5 | config NEW_LEDS | ||
6 | bool "LED Support" | 2 | bool "LED Support" |
3 | depends on HAS_IOMEM | ||
7 | help | 4 | help |
8 | Say Y to enable Linux LED support. This allows control of supported | 5 | Say Y to enable Linux LED support. This allows control of supported |
9 | LEDs from both userspace and optionally, by kernel events (triggers). | 6 | LEDs from both userspace and optionally, by kernel events (triggers). |
@@ -11,9 +8,10 @@ config NEW_LEDS | |||
11 | This is not related to standard keyboard LEDs which are controlled | 8 | This is not related to standard keyboard LEDs which are controlled |
12 | via the input system. | 9 | via the input system. |
13 | 10 | ||
11 | if NEW_LEDS | ||
12 | |||
14 | config LEDS_CLASS | 13 | config LEDS_CLASS |
15 | tristate "LED Class Support" | 14 | tristate "LED Class Support" |
16 | depends on NEW_LEDS | ||
17 | help | 15 | help |
18 | This option enables the led sysfs class in /sys/class/leds. You'll | 16 | This option enables the led sysfs class in /sys/class/leds. You'll |
19 | need this to do anything useful with LEDs. If unsure, say N. | 17 | need this to do anything useful with LEDs. If unsure, say N. |
@@ -95,11 +93,18 @@ config LEDS_COBALT | |||
95 | help | 93 | help |
96 | This option enables support for the front LED on Cobalt Server | 94 | This option enables support for the front LED on Cobalt Server |
97 | 95 | ||
96 | config LEDS_GPIO | ||
97 | tristate "LED Support for GPIO connected LEDs" | ||
98 | depends on LEDS_CLASS && GENERIC_GPIO | ||
99 | help | ||
100 | This option enables support for the LEDs connected to GPIO | ||
101 | outputs. To be useful the particular board must have LEDs | ||
102 | and they must be connected to the GPIO lines. | ||
103 | |||
98 | comment "LED Triggers" | 104 | comment "LED Triggers" |
99 | 105 | ||
100 | config LEDS_TRIGGERS | 106 | config LEDS_TRIGGERS |
101 | bool "LED Trigger support" | 107 | bool "LED Trigger support" |
102 | depends on NEW_LEDS | ||
103 | help | 108 | help |
104 | This option enables trigger support for the leds class. | 109 | This option enables trigger support for the leds class. |
105 | These triggers allow kernel events to drive the LEDs and can | 110 | These triggers allow kernel events to drive the LEDs and can |
@@ -128,5 +133,4 @@ config LEDS_TRIGGER_HEARTBEAT | |||
128 | load average. | 133 | load average. |
129 | If unsure, say Y. | 134 | If unsure, say Y. |
130 | 135 | ||
131 | endmenu | 136 | endif # NEW_LEDS |
132 | |||
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index aa2c18efa5b2..f8995c9bc2ea 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile | |||
@@ -16,6 +16,7 @@ obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o | |||
16 | obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o | 16 | obj-$(CONFIG_LEDS_WRAP) += leds-wrap.o |
17 | obj-$(CONFIG_LEDS_H1940) += leds-h1940.o | 17 | obj-$(CONFIG_LEDS_H1940) += leds-h1940.o |
18 | obj-$(CONFIG_LEDS_COBALT) += leds-cobalt.o | 18 | obj-$(CONFIG_LEDS_COBALT) += leds-cobalt.o |
19 | obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o | ||
19 | 20 | ||
20 | # LED Triggers | 21 | # LED Triggers |
21 | obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o | 22 | obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o |
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 3c1711210e38..4211293ce862 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c | |||
@@ -2,7 +2,7 @@ | |||
2 | * LED Class Core | 2 | * LED Class Core |
3 | * | 3 | * |
4 | * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu> | 4 | * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu> |
5 | * Copyright (C) 2005-2006 Richard Purdie <rpurdie@openedhand.com> | 5 | * Copyright (C) 2005-2007 Richard Purdie <rpurdie@openedhand.com> |
6 | * | 6 | * |
7 | * This program is free software; you can redistribute it and/or modify | 7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as | 8 | * it under the terms of the GNU General Public License version 2 as |
@@ -24,9 +24,10 @@ | |||
24 | 24 | ||
25 | static struct class *leds_class; | 25 | static struct class *leds_class; |
26 | 26 | ||
27 | static ssize_t led_brightness_show(struct class_device *dev, char *buf) | 27 | static ssize_t led_brightness_show(struct device *dev, |
28 | struct device_attribute *attr, char *buf) | ||
28 | { | 29 | { |
29 | struct led_classdev *led_cdev = class_get_devdata(dev); | 30 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
30 | ssize_t ret = 0; | 31 | ssize_t ret = 0; |
31 | 32 | ||
32 | /* no lock needed for this */ | 33 | /* no lock needed for this */ |
@@ -36,10 +37,10 @@ static ssize_t led_brightness_show(struct class_device *dev, char *buf) | |||
36 | return ret; | 37 | return ret; |
37 | } | 38 | } |
38 | 39 | ||
39 | static ssize_t led_brightness_store(struct class_device *dev, | 40 | static ssize_t led_brightness_store(struct device *dev, |
40 | const char *buf, size_t size) | 41 | struct device_attribute *attr, const char *buf, size_t size) |
41 | { | 42 | { |
42 | struct led_classdev *led_cdev = class_get_devdata(dev); | 43 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
43 | ssize_t ret = -EINVAL; | 44 | ssize_t ret = -EINVAL; |
44 | char *after; | 45 | char *after; |
45 | unsigned long state = simple_strtoul(buf, &after, 10); | 46 | unsigned long state = simple_strtoul(buf, &after, 10); |
@@ -56,10 +57,9 @@ static ssize_t led_brightness_store(struct class_device *dev, | |||
56 | return ret; | 57 | return ret; |
57 | } | 58 | } |
58 | 59 | ||
59 | static CLASS_DEVICE_ATTR(brightness, 0644, led_brightness_show, | 60 | static DEVICE_ATTR(brightness, 0644, led_brightness_show, led_brightness_store); |
60 | led_brightness_store); | ||
61 | #ifdef CONFIG_LEDS_TRIGGERS | 61 | #ifdef CONFIG_LEDS_TRIGGERS |
62 | static CLASS_DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store); | 62 | static DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store); |
63 | #endif | 63 | #endif |
64 | 64 | ||
65 | /** | 65 | /** |
@@ -93,16 +93,15 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) | |||
93 | { | 93 | { |
94 | int rc; | 94 | int rc; |
95 | 95 | ||
96 | led_cdev->class_dev = class_device_create(leds_class, NULL, 0, | 96 | led_cdev->dev = device_create(leds_class, parent, 0, "%s", |
97 | parent, "%s", led_cdev->name); | 97 | led_cdev->name); |
98 | if (unlikely(IS_ERR(led_cdev->class_dev))) | 98 | if (unlikely(IS_ERR(led_cdev->dev))) |
99 | return PTR_ERR(led_cdev->class_dev); | 99 | return PTR_ERR(led_cdev->dev); |
100 | 100 | ||
101 | class_set_devdata(led_cdev->class_dev, led_cdev); | 101 | dev_set_drvdata(led_cdev->dev, led_cdev); |
102 | 102 | ||
103 | /* register the attributes */ | 103 | /* register the attributes */ |
104 | rc = class_device_create_file(led_cdev->class_dev, | 104 | rc = device_create_file(led_cdev->dev, &dev_attr_brightness); |
105 | &class_device_attr_brightness); | ||
106 | if (rc) | 105 | if (rc) |
107 | goto err_out; | 106 | goto err_out; |
108 | 107 | ||
@@ -114,8 +113,7 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) | |||
114 | #ifdef CONFIG_LEDS_TRIGGERS | 113 | #ifdef CONFIG_LEDS_TRIGGERS |
115 | rwlock_init(&led_cdev->trigger_lock); | 114 | rwlock_init(&led_cdev->trigger_lock); |
116 | 115 | ||
117 | rc = class_device_create_file(led_cdev->class_dev, | 116 | rc = device_create_file(led_cdev->dev, &dev_attr_trigger); |
118 | &class_device_attr_trigger); | ||
119 | if (rc) | 117 | if (rc) |
120 | goto err_out_led_list; | 118 | goto err_out_led_list; |
121 | 119 | ||
@@ -123,18 +121,17 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev) | |||
123 | #endif | 121 | #endif |
124 | 122 | ||
125 | printk(KERN_INFO "Registered led device: %s\n", | 123 | printk(KERN_INFO "Registered led device: %s\n", |
126 | led_cdev->class_dev->class_id); | 124 | led_cdev->name); |
127 | 125 | ||
128 | return 0; | 126 | return 0; |
129 | 127 | ||
130 | #ifdef CONFIG_LEDS_TRIGGERS | 128 | #ifdef CONFIG_LEDS_TRIGGERS |
131 | err_out_led_list: | 129 | err_out_led_list: |
132 | class_device_remove_file(led_cdev->class_dev, | 130 | device_remove_file(led_cdev->dev, &dev_attr_brightness); |
133 | &class_device_attr_brightness); | ||
134 | list_del(&led_cdev->node); | 131 | list_del(&led_cdev->node); |
135 | #endif | 132 | #endif |
136 | err_out: | 133 | err_out: |
137 | class_device_unregister(led_cdev->class_dev); | 134 | device_unregister(led_cdev->dev); |
138 | return rc; | 135 | return rc; |
139 | } | 136 | } |
140 | EXPORT_SYMBOL_GPL(led_classdev_register); | 137 | EXPORT_SYMBOL_GPL(led_classdev_register); |
@@ -147,18 +144,16 @@ EXPORT_SYMBOL_GPL(led_classdev_register); | |||
147 | */ | 144 | */ |
148 | void led_classdev_unregister(struct led_classdev *led_cdev) | 145 | void led_classdev_unregister(struct led_classdev *led_cdev) |
149 | { | 146 | { |
150 | class_device_remove_file(led_cdev->class_dev, | 147 | device_remove_file(led_cdev->dev, &dev_attr_brightness); |
151 | &class_device_attr_brightness); | ||
152 | #ifdef CONFIG_LEDS_TRIGGERS | 148 | #ifdef CONFIG_LEDS_TRIGGERS |
153 | class_device_remove_file(led_cdev->class_dev, | 149 | device_remove_file(led_cdev->dev, &dev_attr_trigger); |
154 | &class_device_attr_trigger); | ||
155 | write_lock(&led_cdev->trigger_lock); | 150 | write_lock(&led_cdev->trigger_lock); |
156 | if (led_cdev->trigger) | 151 | if (led_cdev->trigger) |
157 | led_trigger_set(led_cdev, NULL); | 152 | led_trigger_set(led_cdev, NULL); |
158 | write_unlock(&led_cdev->trigger_lock); | 153 | write_unlock(&led_cdev->trigger_lock); |
159 | #endif | 154 | #endif |
160 | 155 | ||
161 | class_device_unregister(led_cdev->class_dev); | 156 | device_unregister(led_cdev->dev); |
162 | 157 | ||
163 | write_lock(&leds_list_lock); | 158 | write_lock(&leds_list_lock); |
164 | list_del(&led_cdev->node); | 159 | list_del(&led_cdev->node); |
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c index 454fb0901f82..575368c2b100 100644 --- a/drivers/leds/led-triggers.c +++ b/drivers/leds/led-triggers.c | |||
@@ -1,7 +1,7 @@ | |||
1 | /* | 1 | /* |
2 | * LED Triggers Core | 2 | * LED Triggers Core |
3 | * | 3 | * |
4 | * Copyright 2005-2006 Openedhand Ltd. | 4 | * Copyright 2005-2007 Openedhand Ltd. |
5 | * | 5 | * |
6 | * Author: Richard Purdie <rpurdie@openedhand.com> | 6 | * Author: Richard Purdie <rpurdie@openedhand.com> |
7 | * | 7 | * |
@@ -28,10 +28,10 @@ | |||
28 | static DEFINE_RWLOCK(triggers_list_lock); | 28 | static DEFINE_RWLOCK(triggers_list_lock); |
29 | static LIST_HEAD(trigger_list); | 29 | static LIST_HEAD(trigger_list); |
30 | 30 | ||
31 | ssize_t led_trigger_store(struct class_device *dev, const char *buf, | 31 | ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr, |
32 | size_t count) | 32 | const char *buf, size_t count) |
33 | { | 33 | { |
34 | struct led_classdev *led_cdev = class_get_devdata(dev); | 34 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
35 | char trigger_name[TRIG_NAME_MAX]; | 35 | char trigger_name[TRIG_NAME_MAX]; |
36 | struct led_trigger *trig; | 36 | struct led_trigger *trig; |
37 | size_t len; | 37 | size_t len; |
@@ -67,9 +67,10 @@ ssize_t led_trigger_store(struct class_device *dev, const char *buf, | |||
67 | } | 67 | } |
68 | 68 | ||
69 | 69 | ||
70 | ssize_t led_trigger_show(struct class_device *dev, char *buf) | 70 | ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr, |
71 | char *buf) | ||
71 | { | 72 | { |
72 | struct led_classdev *led_cdev = class_get_devdata(dev); | 73 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
73 | struct led_trigger *trig; | 74 | struct led_trigger *trig; |
74 | int len = 0; | 75 | int len = 0; |
75 | 76 | ||
@@ -183,13 +184,20 @@ int led_trigger_register(struct led_trigger *trigger) | |||
183 | void led_trigger_register_simple(const char *name, struct led_trigger **tp) | 184 | void led_trigger_register_simple(const char *name, struct led_trigger **tp) |
184 | { | 185 | { |
185 | struct led_trigger *trigger; | 186 | struct led_trigger *trigger; |
187 | int err; | ||
186 | 188 | ||
187 | trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); | 189 | trigger = kzalloc(sizeof(struct led_trigger), GFP_KERNEL); |
188 | 190 | ||
189 | if (trigger) { | 191 | if (trigger) { |
190 | trigger->name = name; | 192 | trigger->name = name; |
191 | led_trigger_register(trigger); | 193 | err = led_trigger_register(trigger); |
192 | } | 194 | if (err < 0) |
195 | printk(KERN_WARNING "LED trigger %s failed to register" | ||
196 | " (%d)\n", name, err); | ||
197 | } else | ||
198 | printk(KERN_WARNING "LED trigger %s failed to register" | ||
199 | " (no memory)\n", name); | ||
200 | |||
193 | *tp = trigger; | 201 | *tp = trigger; |
194 | } | 202 | } |
195 | 203 | ||
@@ -215,7 +223,8 @@ void led_trigger_unregister(struct led_trigger *trigger) | |||
215 | 223 | ||
216 | void led_trigger_unregister_simple(struct led_trigger *trigger) | 224 | void led_trigger_unregister_simple(struct led_trigger *trigger) |
217 | { | 225 | { |
218 | led_trigger_unregister(trigger); | 226 | if (trigger) |
227 | led_trigger_unregister(trigger); | ||
219 | kfree(trigger); | 228 | kfree(trigger); |
220 | } | 229 | } |
221 | 230 | ||
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c new file mode 100644 index 000000000000..47d90db280ce --- /dev/null +++ b/drivers/leds/leds-gpio.c | |||
@@ -0,0 +1,199 @@ | |||
1 | /* | ||
2 | * LEDs driver for GPIOs | ||
3 | * | ||
4 | * Copyright (C) 2007 8D Technologies inc. | ||
5 | * Raphael Assenat <raph@8d.com> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License version 2 as | ||
9 | * published by the Free Software Foundation. | ||
10 | * | ||
11 | */ | ||
12 | #include <linux/kernel.h> | ||
13 | #include <linux/init.h> | ||
14 | #include <linux/platform_device.h> | ||
15 | #include <linux/leds.h> | ||
16 | #include <linux/workqueue.h> | ||
17 | |||
18 | #include <asm/gpio.h> | ||
19 | |||
20 | struct gpio_led_data { | ||
21 | struct led_classdev cdev; | ||
22 | unsigned gpio; | ||
23 | struct work_struct work; | ||
24 | u8 new_level; | ||
25 | u8 can_sleep; | ||
26 | u8 active_low; | ||
27 | }; | ||
28 | |||
29 | static void gpio_led_work(struct work_struct *work) | ||
30 | { | ||
31 | struct gpio_led_data *led_dat = | ||
32 | container_of(work, struct gpio_led_data, work); | ||
33 | |||
34 | gpio_set_value_cansleep(led_dat->gpio, led_dat->new_level); | ||
35 | } | ||
36 | |||
37 | static void gpio_led_set(struct led_classdev *led_cdev, | ||
38 | enum led_brightness value) | ||
39 | { | ||
40 | struct gpio_led_data *led_dat = | ||
41 | container_of(led_cdev, struct gpio_led_data, cdev); | ||
42 | int level; | ||
43 | |||
44 | if (value == LED_OFF) | ||
45 | level = 0; | ||
46 | else | ||
47 | level = 1; | ||
48 | |||
49 | if (led_dat->active_low) | ||
50 | level = !level; | ||
51 | |||
52 | /* setting GPIOs with I2C/etc requires a preemptible task context */ | ||
53 | if (led_dat->can_sleep) { | ||
54 | if (preempt_count()) { | ||
55 | led_dat->new_level = level; | ||
56 | schedule_work(&led_dat->work); | ||
57 | } else | ||
58 | gpio_set_value_cansleep(led_dat->gpio, level); | ||
59 | } else | ||
60 | gpio_set_value(led_dat->gpio, level); | ||
61 | } | ||
62 | |||
63 | static int __init gpio_led_probe(struct platform_device *pdev) | ||
64 | { | ||
65 | struct gpio_led_platform_data *pdata = pdev->dev.platform_data; | ||
66 | struct gpio_led *cur_led; | ||
67 | struct gpio_led_data *leds_data, *led_dat; | ||
68 | int i, ret = 0; | ||
69 | |||
70 | if (!pdata) | ||
71 | return -EBUSY; | ||
72 | |||
73 | leds_data = kzalloc(sizeof(struct gpio_led_data) * pdata->num_leds, | ||
74 | GFP_KERNEL); | ||
75 | if (!leds_data) | ||
76 | return -ENOMEM; | ||
77 | |||
78 | for (i = 0; i < pdata->num_leds; i++) { | ||
79 | cur_led = &pdata->leds[i]; | ||
80 | led_dat = &leds_data[i]; | ||
81 | |||
82 | led_dat->cdev.name = cur_led->name; | ||
83 | led_dat->cdev.default_trigger = cur_led->default_trigger; | ||
84 | led_dat->gpio = cur_led->gpio; | ||
85 | led_dat->can_sleep = gpio_cansleep(cur_led->gpio); | ||
86 | led_dat->active_low = cur_led->active_low; | ||
87 | led_dat->cdev.brightness_set = gpio_led_set; | ||
88 | led_dat->cdev.brightness = cur_led->active_low ? LED_FULL : LED_OFF; | ||
89 | |||
90 | ret = gpio_request(led_dat->gpio, led_dat->cdev.name); | ||
91 | if (ret < 0) | ||
92 | goto err; | ||
93 | |||
94 | gpio_direction_output(led_dat->gpio, led_dat->active_low); | ||
95 | |||
96 | ret = led_classdev_register(&pdev->dev, &led_dat->cdev); | ||
97 | if (ret < 0) { | ||
98 | gpio_free(led_dat->gpio); | ||
99 | goto err; | ||
100 | } | ||
101 | |||
102 | INIT_WORK(&led_dat->work, gpio_led_work); | ||
103 | } | ||
104 | |||
105 | platform_set_drvdata(pdev, leds_data); | ||
106 | |||
107 | return 0; | ||
108 | |||
109 | err: | ||
110 | if (i > 0) { | ||
111 | for (i = i - 1; i >= 0; i--) { | ||
112 | led_classdev_unregister(&leds_data[i].cdev); | ||
113 | gpio_free(leds_data[i].gpio); | ||
114 | } | ||
115 | } | ||
116 | |||
117 | flush_scheduled_work(); | ||
118 | kfree(leds_data); | ||
119 | |||
120 | return ret; | ||
121 | } | ||
122 | |||
123 | static int __exit gpio_led_remove(struct platform_device *pdev) | ||
124 | { | ||
125 | int i; | ||
126 | struct gpio_led_platform_data *pdata = pdev->dev.platform_data; | ||
127 | struct gpio_led_data *leds_data; | ||
128 | |||
129 | leds_data = platform_get_drvdata(pdev); | ||
130 | |||
131 | for (i = 0; i < pdata->num_leds; i++) { | ||
132 | led_classdev_unregister(&leds_data[i].cdev); | ||
133 | gpio_free(leds_data[i].gpio); | ||
134 | } | ||
135 | |||
136 | kfree(leds_data); | ||
137 | |||
138 | return 0; | ||
139 | } | ||
140 | |||
141 | #ifdef CONFIG_PM | ||
142 | static int gpio_led_suspend(struct platform_device *pdev, pm_message_t state) | ||
143 | { | ||
144 | struct gpio_led_platform_data *pdata = pdev->dev.platform_data; | ||
145 | struct gpio_led_data *leds_data; | ||
146 | int i; | ||
147 | |||
148 | leds_data = platform_get_drvdata(pdev); | ||
149 | |||
150 | for (i = 0; i < pdata->num_leds; i++) | ||
151 | led_classdev_suspend(&leds_data[i].cdev); | ||
152 | |||
153 | return 0; | ||
154 | } | ||
155 | |||
156 | static int gpio_led_resume(struct platform_device *pdev) | ||
157 | { | ||
158 | struct gpio_led_platform_data *pdata = pdev->dev.platform_data; | ||
159 | struct gpio_led_data *leds_data; | ||
160 | int i; | ||
161 | |||
162 | leds_data = platform_get_drvdata(pdev); | ||
163 | |||
164 | for (i = 0; i < pdata->num_leds; i++) | ||
165 | led_classdev_resume(&leds_data[i].cdev); | ||
166 | |||
167 | return 0; | ||
168 | } | ||
169 | #else | ||
170 | #define gpio_led_suspend NULL | ||
171 | #define gpio_led_resume NULL | ||
172 | #endif | ||
173 | |||
174 | static struct platform_driver gpio_led_driver = { | ||
175 | .remove = __exit_p(gpio_led_remove), | ||
176 | .suspend = gpio_led_suspend, | ||
177 | .resume = gpio_led_resume, | ||
178 | .driver = { | ||
179 | .name = "leds-gpio", | ||
180 | .owner = THIS_MODULE, | ||
181 | }, | ||
182 | }; | ||
183 | |||
184 | static int __init gpio_led_init(void) | ||
185 | { | ||
186 | return platform_driver_probe(&gpio_led_driver, gpio_led_probe); | ||
187 | } | ||
188 | |||
189 | static void __exit gpio_led_exit(void) | ||
190 | { | ||
191 | platform_driver_unregister(&gpio_led_driver); | ||
192 | } | ||
193 | |||
194 | module_init(gpio_led_init); | ||
195 | module_exit(gpio_led_exit); | ||
196 | |||
197 | MODULE_AUTHOR("Raphael Assenat <raph@8d.com>"); | ||
198 | MODULE_DESCRIPTION("GPIO LED driver"); | ||
199 | MODULE_LICENSE("GPL"); | ||
diff --git a/drivers/leds/leds-locomo.c b/drivers/leds/leds-locomo.c index 6f2d449ba983..bfac499f3258 100644 --- a/drivers/leds/leds-locomo.c +++ b/drivers/leds/leds-locomo.c | |||
@@ -19,7 +19,7 @@ | |||
19 | static void locomoled_brightness_set(struct led_classdev *led_cdev, | 19 | static void locomoled_brightness_set(struct led_classdev *led_cdev, |
20 | enum led_brightness value, int offset) | 20 | enum led_brightness value, int offset) |
21 | { | 21 | { |
22 | struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->class_dev->dev); | 22 | struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev); |
23 | unsigned long flags; | 23 | unsigned long flags; |
24 | 24 | ||
25 | local_irq_save(flags); | 25 | local_irq_save(flags); |
diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h index a715c4ed93ff..f2f3884fe063 100644 --- a/drivers/leds/leds.h +++ b/drivers/leds/leds.h | |||
@@ -13,6 +13,7 @@ | |||
13 | #ifndef __LEDS_H_INCLUDED | 13 | #ifndef __LEDS_H_INCLUDED |
14 | #define __LEDS_H_INCLUDED | 14 | #define __LEDS_H_INCLUDED |
15 | 15 | ||
16 | #include <linux/device.h> | ||
16 | #include <linux/leds.h> | 17 | #include <linux/leds.h> |
17 | 18 | ||
18 | static inline void led_set_brightness(struct led_classdev *led_cdev, | 19 | static inline void led_set_brightness(struct led_classdev *led_cdev, |
@@ -37,8 +38,9 @@ void led_trigger_set(struct led_classdev *led_cdev, | |||
37 | #define led_trigger_set(x, y) do {} while(0) | 38 | #define led_trigger_set(x, y) do {} while(0) |
38 | #endif | 39 | #endif |
39 | 40 | ||
40 | ssize_t led_trigger_store(struct class_device *dev, const char *buf, | 41 | ssize_t led_trigger_store(struct device *dev, struct device_attribute *attr, |
41 | size_t count); | 42 | const char *buf, size_t count); |
42 | ssize_t led_trigger_show(struct class_device *dev, char *buf); | 43 | ssize_t led_trigger_show(struct device *dev, struct device_attribute *attr, |
44 | char *buf); | ||
43 | 45 | ||
44 | #endif /* __LEDS_H_INCLUDED */ | 46 | #endif /* __LEDS_H_INCLUDED */ |
diff --git a/drivers/leds/ledtrig-timer.c b/drivers/leds/ledtrig-timer.c index d756bdb01c59..ed9ff02c77ea 100644 --- a/drivers/leds/ledtrig-timer.c +++ b/drivers/leds/ledtrig-timer.c | |||
@@ -52,9 +52,10 @@ static void led_timer_function(unsigned long data) | |||
52 | mod_timer(&timer_data->timer, jiffies + msecs_to_jiffies(delay)); | 52 | mod_timer(&timer_data->timer, jiffies + msecs_to_jiffies(delay)); |
53 | } | 53 | } |
54 | 54 | ||
55 | static ssize_t led_delay_on_show(struct class_device *dev, char *buf) | 55 | static ssize_t led_delay_on_show(struct device *dev, |
56 | struct device_attribute *attr, char *buf) | ||
56 | { | 57 | { |
57 | struct led_classdev *led_cdev = class_get_devdata(dev); | 58 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
58 | struct timer_trig_data *timer_data = led_cdev->trigger_data; | 59 | struct timer_trig_data *timer_data = led_cdev->trigger_data; |
59 | 60 | ||
60 | sprintf(buf, "%lu\n", timer_data->delay_on); | 61 | sprintf(buf, "%lu\n", timer_data->delay_on); |
@@ -62,10 +63,10 @@ static ssize_t led_delay_on_show(struct class_device *dev, char *buf) | |||
62 | return strlen(buf) + 1; | 63 | return strlen(buf) + 1; |
63 | } | 64 | } |
64 | 65 | ||
65 | static ssize_t led_delay_on_store(struct class_device *dev, const char *buf, | 66 | static ssize_t led_delay_on_store(struct device *dev, |
66 | size_t size) | 67 | struct device_attribute *attr, const char *buf, size_t size) |
67 | { | 68 | { |
68 | struct led_classdev *led_cdev = class_get_devdata(dev); | 69 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
69 | struct timer_trig_data *timer_data = led_cdev->trigger_data; | 70 | struct timer_trig_data *timer_data = led_cdev->trigger_data; |
70 | int ret = -EINVAL; | 71 | int ret = -EINVAL; |
71 | char *after; | 72 | char *after; |
@@ -84,9 +85,10 @@ static ssize_t led_delay_on_store(struct class_device *dev, const char *buf, | |||
84 | return ret; | 85 | return ret; |
85 | } | 86 | } |
86 | 87 | ||
87 | static ssize_t led_delay_off_show(struct class_device *dev, char *buf) | 88 | static ssize_t led_delay_off_show(struct device *dev, |
89 | struct device_attribute *attr, char *buf) | ||
88 | { | 90 | { |
89 | struct led_classdev *led_cdev = class_get_devdata(dev); | 91 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
90 | struct timer_trig_data *timer_data = led_cdev->trigger_data; | 92 | struct timer_trig_data *timer_data = led_cdev->trigger_data; |
91 | 93 | ||
92 | sprintf(buf, "%lu\n", timer_data->delay_off); | 94 | sprintf(buf, "%lu\n", timer_data->delay_off); |
@@ -94,10 +96,10 @@ static ssize_t led_delay_off_show(struct class_device *dev, char *buf) | |||
94 | return strlen(buf) + 1; | 96 | return strlen(buf) + 1; |
95 | } | 97 | } |
96 | 98 | ||
97 | static ssize_t led_delay_off_store(struct class_device *dev, const char *buf, | 99 | static ssize_t led_delay_off_store(struct device *dev, |
98 | size_t size) | 100 | struct device_attribute *attr, const char *buf, size_t size) |
99 | { | 101 | { |
100 | struct led_classdev *led_cdev = class_get_devdata(dev); | 102 | struct led_classdev *led_cdev = dev_get_drvdata(dev); |
101 | struct timer_trig_data *timer_data = led_cdev->trigger_data; | 103 | struct timer_trig_data *timer_data = led_cdev->trigger_data; |
102 | int ret = -EINVAL; | 104 | int ret = -EINVAL; |
103 | char *after; | 105 | char *after; |
@@ -116,10 +118,8 @@ static ssize_t led_delay_off_store(struct class_device *dev, const char *buf, | |||
116 | return ret; | 118 | return ret; |
117 | } | 119 | } |
118 | 120 | ||
119 | static CLASS_DEVICE_ATTR(delay_on, 0644, led_delay_on_show, | 121 | static DEVICE_ATTR(delay_on, 0644, led_delay_on_show, led_delay_on_store); |
120 | led_delay_on_store); | 122 | static DEVICE_ATTR(delay_off, 0644, led_delay_off_show, led_delay_off_store); |
121 | static CLASS_DEVICE_ATTR(delay_off, 0644, led_delay_off_show, | ||
122 | led_delay_off_store); | ||
123 | 123 | ||
124 | static void timer_trig_activate(struct led_classdev *led_cdev) | 124 | static void timer_trig_activate(struct led_classdev *led_cdev) |
125 | { | 125 | { |
@@ -136,18 +136,17 @@ static void timer_trig_activate(struct led_classdev *led_cdev) | |||
136 | timer_data->timer.function = led_timer_function; | 136 | timer_data->timer.function = led_timer_function; |
137 | timer_data->timer.data = (unsigned long) led_cdev; | 137 | timer_data->timer.data = (unsigned long) led_cdev; |
138 | 138 | ||
139 | rc = class_device_create_file(led_cdev->class_dev, | 139 | rc = device_create_file(led_cdev->dev, &dev_attr_delay_on); |
140 | &class_device_attr_delay_on); | 140 | if (rc) |
141 | if (rc) goto err_out; | 141 | goto err_out; |
142 | rc = class_device_create_file(led_cdev->class_dev, | 142 | rc = device_create_file(led_cdev->dev, &dev_attr_delay_off); |
143 | &class_device_attr_delay_off); | 143 | if (rc) |
144 | if (rc) goto err_out_delayon; | 144 | goto err_out_delayon; |
145 | 145 | ||
146 | return; | 146 | return; |
147 | 147 | ||
148 | err_out_delayon: | 148 | err_out_delayon: |
149 | class_device_remove_file(led_cdev->class_dev, | 149 | device_remove_file(led_cdev->dev, &dev_attr_delay_on); |
150 | &class_device_attr_delay_on); | ||
151 | err_out: | 150 | err_out: |
152 | led_cdev->trigger_data = NULL; | 151 | led_cdev->trigger_data = NULL; |
153 | kfree(timer_data); | 152 | kfree(timer_data); |
@@ -158,10 +157,8 @@ static void timer_trig_deactivate(struct led_classdev *led_cdev) | |||
158 | struct timer_trig_data *timer_data = led_cdev->trigger_data; | 157 | struct timer_trig_data *timer_data = led_cdev->trigger_data; |
159 | 158 | ||
160 | if (timer_data) { | 159 | if (timer_data) { |
161 | class_device_remove_file(led_cdev->class_dev, | 160 | device_remove_file(led_cdev->dev, &dev_attr_delay_on); |
162 | &class_device_attr_delay_on); | 161 | device_remove_file(led_cdev->dev, &dev_attr_delay_off); |
163 | class_device_remove_file(led_cdev->class_dev, | ||
164 | &class_device_attr_delay_off); | ||
165 | del_timer_sync(&timer_data->timer); | 162 | del_timer_sync(&timer_data->timer); |
166 | kfree(timer_data); | 163 | kfree(timer_data); |
167 | } | 164 | } |
diff --git a/include/linux/leds.h b/include/linux/leds.h index 494bed7c2fc1..421175092ee2 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h | |||
@@ -15,7 +15,6 @@ | |||
15 | #include <linux/list.h> | 15 | #include <linux/list.h> |
16 | 16 | ||
17 | struct device; | 17 | struct device; |
18 | struct class_device; | ||
19 | /* | 18 | /* |
20 | * LED Core | 19 | * LED Core |
21 | */ | 20 | */ |
@@ -37,7 +36,7 @@ struct led_classdev { | |||
37 | void (*brightness_set)(struct led_classdev *led_cdev, | 36 | void (*brightness_set)(struct led_classdev *led_cdev, |
38 | enum led_brightness brightness); | 37 | enum led_brightness brightness); |
39 | 38 | ||
40 | struct class_device *class_dev; | 39 | struct device *dev; |
41 | struct list_head node; /* LED Device list */ | 40 | struct list_head node; /* LED Device list */ |
42 | char *default_trigger; /* Trigger to use */ | 41 | char *default_trigger; /* Trigger to use */ |
43 | 42 | ||
@@ -109,4 +108,18 @@ extern void ledtrig_ide_activity(void); | |||
109 | #define ledtrig_ide_activity() do {} while(0) | 108 | #define ledtrig_ide_activity() do {} while(0) |
110 | #endif | 109 | #endif |
111 | 110 | ||
111 | /* For the leds-gpio driver */ | ||
112 | struct gpio_led { | ||
113 | const char *name; | ||
114 | char *default_trigger; | ||
115 | unsigned gpio; | ||
116 | u8 active_low; | ||
117 | }; | ||
118 | |||
119 | struct gpio_led_platform_data { | ||
120 | int num_leds; | ||
121 | struct gpio_led *leds; | ||
122 | }; | ||
123 | |||
124 | |||
112 | #endif /* __LINUX_LEDS_H_INCLUDED */ | 125 | #endif /* __LINUX_LEDS_H_INCLUDED */ |