Is currently of the form:
-"devicename:colour"
+"devicename:colour:function"
There have been calls for LED properties such as colour to be exported as
individual led class attributes. As a solution which doesn't incur as much
overhead, I suggest these become part of the device name. The naming scheme
-above leaves scope for further attributes should they be needed.
+above leaves scope for further attributes should they be needed. If sections
+of the name don't apply, just leave that section blank.
+
+
+Hardware accelerated blink of LEDs
+==================================
+
+Some LEDs can be programmed to blink without any CPU interaction. To
+support this feature, a LED driver can optionally implement the
+blink_set() function (see <linux/leds.h>). If implemeted, triggers can
+attempt to use it before falling back to software timers. The blink_set()
+function should return 0 if the blink setting is supported, or -EINVAL
+otherwise, which means that LED blinking will be handled by software.
+
+The blink_set() function should choose a user friendly blinking
+value if it is called with *delay_on==0 && *delay_off==0 parameters. In
+this case the driver should give back the chosen value through delay_on
+and delay_off parameters to the leds subsystem.
+
+Any call to the brightness_set() callback function should cancel the
+previously programmed hardware blinking function so setting the brightness
+to 0 can also cancel the blinking of the LED.
Known Issues
compared to the benefits the simple trigger functionality brings. The
rest of the LED subsystem can be modular.
-Some leds can be programmed to flash in hardware. As this isn't a generic
-LED device property, this should be exported as a device specific sysfs
-attribute rather than part of the class if this functionality is required.
-
Future Development
==================
static struct gpio_led dsmg600_led_pins[] = {
{
- .name = "power",
+ .name = "dsmg600:green:power",
.gpio = DSMG600_LED_PWR_GPIO,
},
{
- .name = "wlan",
+ .name = "dsmg600:green:wlan",
.gpio = DSMG600_LED_WLAN_GPIO,
.active_low = true,
},
static struct gpio_led nas100d_led_pins[] = {
{
- .name = "wlan", /* green led */
+ .name = "nas100d:green:wlan",
.gpio = NAS100D_LED_WLAN_GPIO,
.active_low = true,
},
{
- .name = "power", /* blue power led (off=flashing) */
+ .name = "nas100d:blue:power", /* (off=flashing) */
.gpio = NAS100D_LED_PWR_GPIO,
.active_low = true,
},
{
- .name = "disk", /* yellow led */
+ .name = "nas100d:yellow:disk",
.gpio = NAS100D_LED_DISK_GPIO,
.active_low = true,
},
static struct gpio_led nslu2_led_pins[] = {
{
- .name = "ready", /* green led */
+ .name = "nslu2:green:ready",
.gpio = NSLU2_LED_GRN_GPIO,
},
{
- .name = "status", /* red led */
+ .name = "nslu2:red:status",
.gpio = NSLU2_LED_RED_GPIO,
},
{
- .name = "disk-1",
+ .name = "nslu2:green:disk-1",
.gpio = NSLU2_LED_DISK1_GPIO,
.active_low = true,
},
{
- .name = "disk-2",
+ .name = "nslu2:green:disk-2",
.gpio = NSLU2_LED_DISK2_GPIO,
.active_low = true,
},
}
static struct led_classdev applesmc_backlight = {
- .name = "smc:kbd_backlight",
+ .name = "smc::kbd_backlight",
.default_trigger = "nand-disk",
.brightness_set = applesmc_brightness_set,
};
}
static struct led_classdev wistron_mail_led = {
- .name = "mail:green",
+ .name = "wistron:green:mail",
.brightness_set = wistron_mail_led_set,
};
static struct led_classdev wistron_wifi_led = {
- .name = "wifi:red",
+ .name = "wistron:red:wifi",
.brightness_set = wistron_wifi_led_set,
};
This option enables support for the LEDs on Sharp Zaurus
SL-Cxx00 series (C1000, C3000, C3100).
-config LEDS_IXP4XX
- tristate "LED Support for GPIO connected LEDs on IXP4XX processors"
- depends on LEDS_CLASS && ARCH_IXP4XX
- help
- This option enables support for the LEDs connected to GPIO
- outputs of the Intel IXP4XX processors. To be useful the
- particular board must have LEDs and they must be connected
- to the GPIO lines. If unsure, say Y.
-
config LEDS_TOSA
tristate "LED Support for the Sharp SL-6000 series"
depends on LEDS_CLASS && PXA_SHARPSL
help
This option enables support for the Cobalt Raq series LEDs.
+config LEDS_HP6XX
+ tristate "LED Support for the HP Jornada 6xx"
+ depends on LEDS_CLASS && SH_HP6XX
+ help
+ This option enables led support for the handheld
+ HP Jornada 620/660/680/690.
+
config LEDS_GPIO
tristate "LED Support for GPIO connected LEDs"
depends on LEDS_CLASS && GENERIC_GPIO
help
This option enables support for the CM-X270 LEDs.
+config LEDS_CLEVO_MAIL
+ tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
+ depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL
+ help
+ This driver makes the mail LED accessible from userspace
+ programs through the leds subsystem. This LED have three
+ known mode: off, blink at 0.5Hz and blink at 1Hz.
+
+ The driver supports two kinds of interface: using ledtrig-timer
+ or through /sys/class/leds/clevo::mail/brightness. As this LED
+ cannot change it's brightness it blinks instead. The brightness
+ value 0 means off, 1..127 means blink at 0.5Hz and 128..255 means
+ blink at 1Hz.
+
+ This module can drive the mail LED for the following notebooks:
+
+ Clevo D410J
+ Clevo D410V
+ Clevo D400V/D470V (not tested, but might work)
+ Clevo M540N
+ Clevo M5x0N (not tested, but might work)
+ Positivo Mobile (Clevo M5x0V)
+
+ To compile this driver as a module, choose M here: the
+ module will be called leds-clevo-mail.
+
comment "LED Triggers"
config LEDS_TRIGGERS
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a programmable timer
- via sysfs. If unsure, say Y.
+ via sysfs. Some LED hardware can be programmed to start
+ blinking the LED without any further software interaction.
+ For more details read Documentation/leds-class.txt.
+
+ If unsure, say Y.
config LEDS_TRIGGER_IDE_DISK
bool "LED IDE Disk Trigger"
obj-$(CONFIG_LEDS_CORGI) += leds-corgi.o
obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
obj-$(CONFIG_LEDS_SPITZ) += leds-spitz.o
-obj-$(CONFIG_LEDS_IXP4XX) += leds-ixp4xx-gpio.o
obj-$(CONFIG_LEDS_TOSA) += leds-tosa.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
obj-$(CONFIG_LEDS_COBALT_RAQ) += leds-cobalt-raq.o
obj-$(CONFIG_LEDS_GPIO) += leds-gpio.o
obj-$(CONFIG_LEDS_CM_X270) += leds-cm-x270.o
+obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
+obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
# LED Triggers
obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
static struct ams_delta_led ams_delta_leds[] = {
{
.cdev = {
- .name = "ams-delta:camera",
+ .name = "ams-delta::camera",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_CAMERA,
},
{
.cdev = {
- .name = "ams-delta:advert",
+ .name = "ams-delta::advert",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_ADVERT,
},
{
.cdev = {
- .name = "ams-delta:email",
+ .name = "ams-delta::email",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_EMAIL,
},
{
.cdev = {
- .name = "ams-delta:handsfree",
+ .name = "ams-delta::handsfree",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_HANDSFREE,
},
{
.cdev = {
- .name = "ams-delta:voicemail",
+ .name = "ams-delta::voicemail",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_VOICEMAIL,
},
{
.cdev = {
- .name = "ams-delta:voice",
+ .name = "ams-delta::voice",
.brightness_set = ams_delta_led_set,
},
.bitmask = AMS_DELTA_LATCH1_LED_VOICE,
--- /dev/null
+
+#include <linux/module.h>
+
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/leds.h>
+
+#include <linux/io.h>
+#include <linux/dmi.h>
+
+#include <linux/i8042.h>
+
+#define CLEVO_MAIL_LED_OFF 0x0084
+#define CLEVO_MAIL_LED_BLINK_1HZ 0x008A
+#define CLEVO_MAIL_LED_BLINK_0_5HZ 0x0083
+
+MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>");
+MODULE_DESCRIPTION("Clevo mail LED driver");
+MODULE_LICENSE("GPL");
+
+static unsigned int __initdata nodetect;
+module_param_named(nodetect, nodetect, bool, 0);
+MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection");
+
+static struct platform_device *pdev;
+
+static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
+{
+ printk(KERN_INFO KBUILD_MODNAME ": '%s' found\n", id->ident);
+ return 1;
+}
+
+/*
+ * struct mail_led_whitelist - List of known good models
+ *
+ * Contains the known good models this driver is compatible with.
+ * When adding a new model try to be as strict as possible. This
+ * makes it possible to keep the false positives (the model is
+ * detected as working, but in reality it is not) as low as
+ * possible.
+ */
+static struct dmi_system_id __initdata mail_led_whitelist[] = {
+ {
+ .callback = clevo_mail_led_dmi_callback,
+ .ident = "Clevo D410J",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "VIA"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "K8N800"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "VT8204B")
+ }
+ },
+ {
+ .callback = clevo_mail_led_dmi_callback,
+ .ident = "Clevo M5x0N",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "M5x0N")
+ }
+ },
+ {
+ .callback = clevo_mail_led_dmi_callback,
+ .ident = "Positivo Mobile",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "CLEVO Co. "),
+ DMI_MATCH(DMI_BOARD_NAME, "M5X0V "),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Positivo Mobile"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "VT6198")
+ }
+ },
+ {
+ .callback = clevo_mail_led_dmi_callback,
+ .ident = "Clevo D410V",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Clevo, Co."),
+ DMI_MATCH(DMI_BOARD_NAME, "D400V/D470V"),
+ DMI_MATCH(DMI_BOARD_VERSION, "SS78B"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "Rev. A1")
+ }
+ },
+ { }
+};
+
+static void clevo_mail_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ if (value == LED_OFF)
+ i8042_command(NULL, CLEVO_MAIL_LED_OFF);
+ else if (value <= LED_HALF)
+ i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
+ else
+ i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
+
+}
+
+static int clevo_mail_led_blink(struct led_classdev *led_cdev,
+ unsigned long* delay_on,
+ unsigned long* delay_off)
+{
+ int status = -EINVAL;
+
+ if (*delay_on == 0 /* ms */ && *delay_off == 0 /* ms */) {
+ /* Special case: the leds subsystem requested us to
+ * chose one user friendly blinking of the LED, and
+ * start it. Let's blink the led slowly (0.5Hz).
+ */
+ *delay_on = 1000; /* ms */
+ *delay_off = 1000; /* ms */
+ i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
+ status = 0;
+
+ } else if (*delay_on == 500 /* ms */ && *delay_off == 500 /* ms */) {
+ /* blink the led with 1Hz */
+ i8042_command(NULL, CLEVO_MAIL_LED_BLINK_1HZ);
+ status = 0;
+
+ } else if (*delay_on == 1000 /* ms */ && *delay_off == 1000 /* ms */) {
+ /* blink the led with 0.5Hz */
+ i8042_command(NULL, CLEVO_MAIL_LED_BLINK_0_5HZ);
+ status = 0;
+
+ } else {
+ printk(KERN_DEBUG KBUILD_MODNAME
+ ": clevo_mail_led_blink(..., %lu, %lu),"
+ " returning -EINVAL (unsupported)\n",
+ *delay_on, *delay_off);
+ }
+
+ return status;
+}
+
+static struct led_classdev clevo_mail_led = {
+ .name = "clevo::mail",
+ .brightness_set = clevo_mail_led_set,
+ .blink_set = clevo_mail_led_blink,
+};
+
+static int __init clevo_mail_led_probe(struct platform_device *pdev)
+{
+ return led_classdev_register(&pdev->dev, &clevo_mail_led);
+}
+
+static int clevo_mail_led_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&clevo_mail_led);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int clevo_mail_led_suspend(struct platform_device *dev,
+ pm_message_t state)
+{
+ led_classdev_suspend(&clevo_mail_led);
+ return 0;
+}
+
+static int clevo_mail_led_resume(struct platform_device *dev)
+{
+ led_classdev_resume(&clevo_mail_led);
+ return 0;
+}
+#else
+#define clevo_mail_led_suspend NULL
+#define clevo_mail_led_resume NULL
+#endif
+
+static struct platform_driver clevo_mail_led_driver = {
+ .probe = clevo_mail_led_probe,
+ .remove = clevo_mail_led_remove,
+ .suspend = clevo_mail_led_suspend,
+ .resume = clevo_mail_led_resume,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+static int __init clevo_mail_led_init(void)
+{
+ int error = 0;
+ int count = 0;
+
+ /* Check with the help of DMI if we are running on supported hardware */
+ if (!nodetect) {
+ count = dmi_check_system(mail_led_whitelist);
+ } else {
+ count = 1;
+ printk(KERN_ERR KBUILD_MODNAME ": Skipping DMI detection. "
+ "If the driver works on your hardware please "
+ "report model and the output of dmidecode in tracker "
+ "at http://sourceforge.net/projects/clevo-mailled/\n");
+ }
+
+ if (!count)
+ return -ENODEV;
+
+ pdev = platform_device_register_simple(KBUILD_MODNAME, -1, NULL, 0);
+ if (!IS_ERR(pdev)) {
+ error = platform_driver_probe(&clevo_mail_led_driver,
+ clevo_mail_led_probe);
+ if (error) {
+ printk(KERN_ERR KBUILD_MODNAME
+ ": Can't probe platform driver\n");
+ platform_device_unregister(pdev);
+ }
+ } else
+ error = PTR_ERR(pdev);
+
+ return error;
+}
+
+static void __exit clevo_mail_led_exit(void)
+{
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&clevo_mail_led_driver);
+
+ clevo_mail_led_set(NULL, LED_OFF);
+}
+
+module_init(clevo_mail_led_init);
+module_exit(clevo_mail_led_exit);
}
static struct led_classdev corgi_amber_led = {
- .name = "corgi:amber",
+ .name = "corgi:amber:charge",
.default_trigger = "sharpsl-charge",
.brightness_set = corgiled_amber_set,
};
static struct led_classdev corgi_green_led = {
- .name = "corgi:green",
+ .name = "corgi:green:mail",
.default_trigger = "nand-disk",
.brightness_set = corgiled_green_set,
};
led_dat->can_sleep = gpio_cansleep(cur_led->gpio);
led_dat->active_low = cur_led->active_low;
led_dat->cdev.brightness_set = gpio_led_set;
- led_dat->cdev.brightness = cur_led->active_low ? LED_FULL : LED_OFF;
+ led_dat->cdev.brightness = LED_OFF;
ret = gpio_request(led_dat->gpio, led_dat->cdev.name);
if (ret < 0)
--- /dev/null
+/*
+ * LED Triggers Core
+ * For the HP Jornada 620/660/680/690 handhelds
+ *
+ * Copyright 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
+ * this driver is based on leds-spitz.c by Richard Purdie.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <asm/hd64461.h>
+#include <asm/hp6xx.h>
+
+static void hp6xxled_green_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ u8 v8;
+
+ v8 = inb(PKDR);
+ if (value)
+ outb(v8 & (~PKDR_LED_GREEN), PKDR);
+ else
+ outb(v8 | PKDR_LED_GREEN, PKDR);
+}
+
+static void hp6xxled_red_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ u16 v16;
+
+ v16 = inw(HD64461_GPBDR);
+ if (value)
+ outw(v16 & (~HD64461_GPBDR_LED_RED), HD64461_GPBDR);
+ else
+ outw(v16 | HD64461_GPBDR_LED_RED, HD64461_GPBDR);
+}
+
+static struct led_classdev hp6xx_red_led = {
+ .name = "hp6xx:red",
+ .default_trigger = "hp6xx-charge",
+ .brightness_set = hp6xxled_red_set,
+};
+
+static struct led_classdev hp6xx_green_led = {
+ .name = "hp6xx:green",
+ .default_trigger = "ide-disk",
+ .brightness_set = hp6xxled_green_set,
+};
+
+#ifdef CONFIG_PM
+static int hp6xxled_suspend(struct platform_device *dev, pm_message_t state)
+{
+ led_classdev_suspend(&hp6xx_red_led);
+ led_classdev_suspend(&hp6xx_green_led);
+ return 0;
+}
+
+static int hp6xxled_resume(struct platform_device *dev)
+{
+ led_classdev_resume(&hp6xx_red_led);
+ led_classdev_resume(&hp6xx_green_led);
+ return 0;
+}
+#endif
+
+static int hp6xxled_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = led_classdev_register(&pdev->dev, &hp6xx_red_led);
+ if (ret < 0)
+ return ret;
+
+ ret = led_classdev_register(&pdev->dev, &hp6xx_green_led);
+ if (ret < 0)
+ led_classdev_unregister(&hp6xx_red_led);
+
+ return ret;
+}
+
+static int hp6xxled_remove(struct platform_device *pdev)
+{
+ led_classdev_unregister(&hp6xx_red_led);
+ led_classdev_unregister(&hp6xx_green_led);
+
+ return 0;
+}
+
+static struct platform_driver hp6xxled_driver = {
+ .probe = hp6xxled_probe,
+ .remove = hp6xxled_remove,
+#ifdef CONFIG_PM
+ .suspend = hp6xxled_suspend,
+ .resume = hp6xxled_resume,
+#endif
+ .driver = {
+ .name = "hp6xx-led",
+ },
+};
+
+static int __init hp6xxled_init(void)
+{
+ return platform_driver_register(&hp6xxled_driver);
+}
+
+static void __exit hp6xxled_exit(void)
+{
+ platform_driver_unregister(&hp6xxled_driver);
+}
+
+module_init(hp6xxled_init);
+module_exit(hp6xxled_exit);
+
+MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
+MODULE_DESCRIPTION("HP Jornada 6xx LED driver");
+MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * IXP4XX GPIO driver LED driver
- *
- * Author: John Bowler <jbowler@acm.org>
- *
- * Copyright (c) 2006 John Bowler
- *
- * Permission is hereby granted, free of charge, to any
- * person obtaining a copy of this software and associated
- * documentation files (the "Software"), to deal in the
- * Software without restriction, including without
- * limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of
- * the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the
- * following conditions:
- *
- * The above copyright notice and this permission notice
- * shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
- * ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
- * SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/leds.h>
-#include <asm/arch/hardware.h>
-
-extern spinlock_t gpio_lock;
-
-/* Up to 16 gpio lines are possible. */
-#define GPIO_MAX 16
-static struct ixp4xxgpioled_device {
- struct led_classdev ancestor;
- int flags;
-} ixp4xxgpioled_devices[GPIO_MAX];
-
-void ixp4xxgpioled_brightness_set(struct led_classdev *pled,
- enum led_brightness value)
-{
- const struct ixp4xxgpioled_device *const ixp4xx_dev =
- container_of(pled, struct ixp4xxgpioled_device, ancestor);
- const u32 gpio_pin = ixp4xx_dev - ixp4xxgpioled_devices;
-
- if (gpio_pin < GPIO_MAX && ixp4xx_dev->ancestor.name != 0) {
- /* Set or clear the 'gpio_pin' bit according to the style
- * and the required setting (value > 0 == on)
- */
- const int gpio_value =
- (value > 0) == (ixp4xx_dev->flags != IXP4XX_GPIO_LOW) ?
- IXP4XX_GPIO_HIGH : IXP4XX_GPIO_LOW;
-
- {
- unsigned long flags;
- spin_lock_irqsave(&gpio_lock, flags);
- gpio_line_set(gpio_pin, gpio_value);
- spin_unlock_irqrestore(&gpio_lock, flags);
- }
- }
-}
-
-/* LEDs are described in resources, the following iterates over the valid
- * LED resources.
- */
-#define for_all_leds(i, pdev) \
- for (i=0; i<pdev->num_resources; ++i) \
- if (pdev->resource[i].start < GPIO_MAX && \
- pdev->resource[i].name != 0)
-
-/* The following applies 'operation' to each LED from the given platform,
- * the function always returns 0 to allow tail call elimination.
- */
-static int apply_to_all_leds(struct platform_device *pdev,
- void (*operation)(struct led_classdev *pled))
-{
- int i;
-
- for_all_leds(i, pdev)
- operation(&ixp4xxgpioled_devices[pdev->resource[i].start].ancestor);
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int ixp4xxgpioled_suspend(struct platform_device *pdev,
- pm_message_t state)
-{
- return apply_to_all_leds(pdev, led_classdev_suspend);
-}
-
-static int ixp4xxgpioled_resume(struct platform_device *pdev)
-{
- return apply_to_all_leds(pdev, led_classdev_resume);
-}
-#endif
-
-static void ixp4xxgpioled_remove_one_led(struct led_classdev *pled)
-{
- led_classdev_unregister(pled);
- pled->name = 0;
-}
-
-static int ixp4xxgpioled_remove(struct platform_device *pdev)
-{
- return apply_to_all_leds(pdev, ixp4xxgpioled_remove_one_led);
-}
-
-static int ixp4xxgpioled_probe(struct platform_device *pdev)
-{
- /* The board level has to tell the driver where the
- * LEDs are connected - there is no way to find out
- * electrically. It must also say whether the GPIO
- * lines are active high or active low.
- *
- * To do this read the num_resources (the number of
- * LEDs) and the struct resource (the data for each
- * LED). The name comes from the resource, and it
- * isn't copied.
- */
- int i;
-
- for_all_leds(i, pdev) {
- const u8 gpio_pin = pdev->resource[i].start;
- int rc;
-
- if (ixp4xxgpioled_devices[gpio_pin].ancestor.name == 0) {
- unsigned long flags;
-
- spin_lock_irqsave(&gpio_lock, flags);
- gpio_line_config(gpio_pin, IXP4XX_GPIO_OUT);
- /* The config can, apparently, reset the state,
- * I suspect the gpio line may be an input and
- * the config may cause the line to be latched,
- * so the setting depends on how the LED is
- * connected to the line (which affects how it
- * floats if not driven).
- */
- gpio_line_set(gpio_pin, IXP4XX_GPIO_HIGH);
- spin_unlock_irqrestore(&gpio_lock, flags);
-
- ixp4xxgpioled_devices[gpio_pin].flags =
- pdev->resource[i].flags & IORESOURCE_BITS;
-
- ixp4xxgpioled_devices[gpio_pin].ancestor.name =
- pdev->resource[i].name;
-
- /* This is how a board manufacturer makes the LED
- * come on on reset - the GPIO line will be high, so
- * make the LED light when the line is low...
- */
- if (ixp4xxgpioled_devices[gpio_pin].flags != IXP4XX_GPIO_LOW)
- ixp4xxgpioled_devices[gpio_pin].ancestor.brightness = 100;
- else
- ixp4xxgpioled_devices[gpio_pin].ancestor.brightness = 0;
-
- ixp4xxgpioled_devices[gpio_pin].ancestor.flags = 0;
-
- ixp4xxgpioled_devices[gpio_pin].ancestor.brightness_set =
- ixp4xxgpioled_brightness_set;
-
- ixp4xxgpioled_devices[gpio_pin].ancestor.default_trigger = 0;
- }
-
- rc = led_classdev_register(&pdev->dev,
- &ixp4xxgpioled_devices[gpio_pin].ancestor);
- if (rc < 0) {
- ixp4xxgpioled_devices[gpio_pin].ancestor.name = 0;
- ixp4xxgpioled_remove(pdev);
- return rc;
- }
- }
-
- return 0;
-}
-
-static struct platform_driver ixp4xxgpioled_driver = {
- .probe = ixp4xxgpioled_probe,
- .remove = ixp4xxgpioled_remove,
-#ifdef CONFIG_PM
- .suspend = ixp4xxgpioled_suspend,
- .resume = ixp4xxgpioled_resume,
-#endif
- .driver = {
- .name = "IXP4XX-GPIO-LED",
- },
-};
-
-static int __init ixp4xxgpioled_init(void)
-{
- return platform_driver_register(&ixp4xxgpioled_driver);
-}
-
-static void __exit ixp4xxgpioled_exit(void)
-{
- platform_driver_unregister(&ixp4xxgpioled_driver);
-}
-
-module_init(ixp4xxgpioled_init);
-module_exit(ixp4xxgpioled_exit);
-
-MODULE_AUTHOR("John Bowler <jbowler@acm.org>");
-MODULE_DESCRIPTION("IXP4XX GPIO LED driver");
-MODULE_LICENSE("Dual MIT/GPL");
}
static struct led_classdev locomo_led0 = {
- .name = "locomo:amber",
+ .name = "locomo:amber:charge",
.default_trigger = "sharpsl-charge",
.brightness_set = locomoled_brightness_set0,
};
static struct led_classdev locomo_led1 = {
- .name = "locomo:green",
+ .name = "locomo:green:mail",
.default_trigger = "nand-disk",
.brightness_set = locomoled_brightness_set1,
};
}
static struct led_classdev net48xx_error_led = {
- .name = "net48xx:error",
+ .name = "net48xx::error",
.brightness_set = net48xx_error_led_set,
};
}
static struct led_classdev spitz_amber_led = {
- .name = "spitz:amber",
+ .name = "spitz:amber:charge",
.default_trigger = "sharpsl-charge",
.brightness_set = spitzled_amber_set,
};
static struct led_classdev spitz_green_led = {
- .name = "spitz:green",
+ .name = "spitz:green:hddactivity",
.default_trigger = "ide-disk",
.brightness_set = spitzled_green_set,
};
{
int ret;
- if (machine_is_akita())
+ if (machine_is_akita()) {
+ spitz_green_led.name = "spitz:green:mail";
spitz_green_led.default_trigger = "nand-disk";
+ }
ret = led_classdev_register(&pdev->dev, &spitz_amber_led);
if (ret < 0)
}
static struct led_classdev tosa_amber_led = {
- .name = "tosa:amber",
+ .name = "tosa:amber:charge",
.default_trigger = "sharpsl-charge",
.brightness_set = tosaled_amber_set,
};
static struct led_classdev tosa_green_led = {
- .name = "tosa:green",
+ .name = "tosa:green:mail",
.default_trigger = "nand-disk",
.brightness_set = tosaled_green_set,
};
#include <linux/scx200_gpio.h>
#define DRVNAME "wrap-led"
+#define WRAP_POWER_LED_GPIO 2
#define WRAP_ERROR_LED_GPIO 3
-#define WRAP_EXTRA_LED_GPIO 18
+#define WRAP_EXTRA_LED_GPIO 18
static struct platform_device *pdev;
+static void wrap_power_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ if (value)
+ scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
+ else
+ scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
+}
+
static void wrap_error_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
}
+static struct led_classdev wrap_power_led = {
+ .name = "wrap::power",
+ .brightness_set = wrap_power_led_set,
+};
+
static struct led_classdev wrap_error_led = {
- .name = "wrap:error",
+ .name = "wrap::error",
.brightness_set = wrap_error_led_set,
};
static struct led_classdev wrap_extra_led = {
- .name = "wrap:extra",
+ .name = "wrap::extra",
.brightness_set = wrap_extra_led_set,
};
static int wrap_led_suspend(struct platform_device *dev,
pm_message_t state)
{
+ led_classdev_suspend(&wrap_power_led);
led_classdev_suspend(&wrap_error_led);
led_classdev_suspend(&wrap_extra_led);
return 0;
static int wrap_led_resume(struct platform_device *dev)
{
+ led_classdev_resume(&wrap_power_led);
led_classdev_resume(&wrap_error_led);
led_classdev_resume(&wrap_extra_led);
return 0;
{
int ret;
+ ret = led_classdev_register(&pdev->dev, &wrap_power_led);
+ if (ret < 0)
+ return ret;
+
ret = led_classdev_register(&pdev->dev, &wrap_error_led);
- if (ret == 0) {
- ret = led_classdev_register(&pdev->dev, &wrap_extra_led);
- if (ret < 0)
- led_classdev_unregister(&wrap_error_led);
- }
+ if (ret < 0)
+ goto err1;
+
+ ret = led_classdev_register(&pdev->dev, &wrap_extra_led);
+ if (ret < 0)
+ goto err2;
+
+ return ret;
+
+err2:
+ led_classdev_unregister(&wrap_error_led);
+err1:
+ led_classdev_unregister(&wrap_power_led);
+
return ret;
}
static int wrap_led_remove(struct platform_device *pdev)
{
+ led_classdev_unregister(&wrap_power_led);
led_classdev_unregister(&wrap_error_led);
led_classdev_unregister(&wrap_extra_led);
return 0;
count++;
if (count == size) {
- timer_data->delay_on = state;
- mod_timer(&timer_data->timer, jiffies + 1);
+ if (timer_data->delay_on != state) {
+ /* the new value differs from the previous */
+ timer_data->delay_on = state;
+
+ /* deactivate previous settings */
+ del_timer_sync(&timer_data->timer);
+
+ /* try to activate hardware acceleration, if any */
+ if (!led_cdev->blink_set ||
+ led_cdev->blink_set(led_cdev,
+ &timer_data->delay_on, &timer_data->delay_off)) {
+ /* no hardware acceleration, blink via timer */
+ mod_timer(&timer_data->timer, jiffies + 1);
+ }
+ }
ret = count;
}
count++;
if (count == size) {
- timer_data->delay_off = state;
- mod_timer(&timer_data->timer, jiffies + 1);
+ if (timer_data->delay_off != state) {
+ /* the new value differs from the previous */
+ timer_data->delay_off = state;
+
+ /* deactivate previous settings */
+ del_timer_sync(&timer_data->timer);
+
+ /* try to activate hardware acceleration, if any */
+ if (!led_cdev->blink_set ||
+ led_cdev->blink_set(led_cdev,
+ &timer_data->delay_on, &timer_data->delay_off)) {
+ /* no hardware acceleration, blink via timer */
+ mod_timer(&timer_data->timer, jiffies + 1);
+ }
+ }
ret = count;
}
if (rc)
goto err_out_delayon;
+ /* If there is hardware support for blinking, start one
+ * user friendly blink rate chosen by the driver.
+ */
+ if (led_cdev->blink_set)
+ led_cdev->blink_set(led_cdev,
+ &timer_data->delay_on, &timer_data->delay_off);
+
return;
err_out_delayon:
static int object##_led_wk; \
static DECLARE_WORK(object##_led_work, object##_led_update); \
static struct led_classdev object##_led = { \
- .name = "asus:" ledname, \
+ .name = "asus::" ledname, \
.brightness_set = object##_led_set, \
}
case B43_LED_TRANSFER:
case B43_LED_APTRANSFER:
snprintf(name, sizeof(name),
- "b43-%s:tx", wiphy_name(hw->wiphy));
+ "b43-%s::tx", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->led_tx, name,
ieee80211_get_tx_led_name(hw),
led_index, activelow);
snprintf(name, sizeof(name),
- "b43-%s:rx", wiphy_name(hw->wiphy));
+ "b43-%s::rx", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->led_rx, name,
ieee80211_get_rx_led_name(hw),
led_index, activelow);
case B43_LED_RADIO_B:
case B43_LED_MODE_BG:
snprintf(name, sizeof(name),
- "b43-%s:radio", wiphy_name(hw->wiphy));
+ "b43-%s::radio", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->led_radio, name,
b43_rfkill_led_name(dev),
led_index, activelow);
case B43_LED_WEIRD:
case B43_LED_ASSOC:
snprintf(name, sizeof(name),
- "b43-%s:assoc", wiphy_name(hw->wiphy));
+ "b43-%s::assoc", wiphy_name(hw->wiphy));
b43_register_led(dev, &dev->led_assoc, name,
ieee80211_get_assoc_led_name(hw),
led_index, activelow);
void (*brightness_set)(struct led_classdev *led_cdev,
enum led_brightness brightness);
+ /* Activate hardware accelerated blink */
+ int (*blink_set)(struct led_classdev *led_cdev,
+ unsigned long *delay_on,
+ unsigned long *delay_off);
+
struct device *dev;
struct list_head node; /* LED Device list */
char *default_trigger; /* Trigger to use */
projects / linux-2.6-omap-h63xx.git / commitdiff