kernel/linux.git/include/linux/leds.h, branch linux-2.6.28.y

leds: Make default trigger fields const

2008-10-20T21:34:12+00:00

The default_trigger fields of struct gpio_led and thus struct led_classdev are pretty much always assigned from a string literal, which means the string can't be modified. Which is fine, since there is no reason to modify the string and in fact it never is. But they should be marked const to prevent such code from being added, to prevent warnings if -Wwrite-strings is used, when assigned from a constant string other than a string literal (which produces a warning under current kernel compiler flags), and for general good coding practices. Signed-off-by: Trent Piepho Signed-off-by: Richard Purdie

leds: Add support for Philips PCA955x I2C LED drivers

2008-07-23T08:49:56+00:00

This driver supports the PCA9550, PCA9551, PCA9552, and PCA9553 LED driver chips. Signed-off-by: Nate Case Signed-off-by: Andrew Morton Signed-off-by: Richard Purdie

leds: mark led_classdev.default_trigger as const

2008-07-23T08:49:56+00:00

LED classdev core doesn't modify memory pointed by the default_trigger, so mark it as const and we'll able to pass const char *s without getting compiler warnings. Signed-off-by: Anton Vorontsov Signed-off-by: Richard Purdie

leds: Document the context brightness_set needs

2008-04-24T22:49:30+00:00

Make sure there is no confusion about the contexts brightness_set can be called under by documenting it. Signed-off-by: Richard Purdie

leds: Add support to leds with readable status

2008-04-24T22:37:42+00:00

Some led hardware allows drivers to query the led state, and this patch adds a hook to let the led class take advantage of that information when available. Without this functionality, when access to the led hardware is not exclusive (i.e. firmware or hardware might change its state behind the kernel's back), reality goes out of sync with the led class' idea of what the led is doing, which is annoying at best. Behaviour for drivers that do not or cannot read the led status is unchanged. Signed-off-by: Henrique de Moraes Holschuh Signed-off-by: Richard Purdie

leds: enable support for blink_set() platform hook in leds-gpio

2008-04-24T22:37:42+00:00

Enhance leds-gpio to provide hardware-based led flashing by passing through the blink_set() call to a optionally set platform-specific function pointer. Signed-off-by: Herbert Valerio Riedel Signed-off-by: Richard Purdie

PM: Remove destroy_suspended_device()

2008-04-20T02:10:28+00:00

After 2.6.24 there was a plan to make the PM core acquire all device semaphores during a suspend/hibernation to protect itself from concurrent operations involving device objects. That proved to be too heavy-handed and we found a better way to achieve the goal, but before it happened, we had introduced the functions device_pm_schedule_removal() and destroy_suspended_device() to allow drivers to "safely" destroy a suspended device and we had adapted some drivers to use them. Now that these functions are no longer necessary, it seems reasonable to remove them and modify their users to use the normal device unregistration instead. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Greg Kroah-Hartman

leds: Add support for hardware accelerated LED flashing

2008-02-07T09:49:38+00:00

Extends the leds subsystem with a blink_set() callback function which can be optionally implemented by a LED driver. If implemented, the driver can use the hardware acceleration for blinking a LED. Signed-off-by: Márton Németh Signed-off-by: Richard Purdie

leds: add possibility to remove leds classdevs during suspend/resume

2008-02-05T17:44:23+00:00

Make it possible to unregister a led classdev object in a safe way during a suspend/resume cycle. Signed-off-by: Rafael J. Wysocki Cc: Michael Buesch Cc: Pavel Machek Cc: "John W. Linville" Cc: Alan Stern Cc: Len Brown Cc: Greg KH Cc: Kay Sievers Cc: Richard Purdie Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

leds: Fix led trigger locking bugs

2007-12-07T09:06:53+00:00

Convert part of the led trigger core from rw spinlocks to rw semaphores. We're calling functions which can sleep from invalid contexts otherwise. Fixes bug #9264. Signed-off-by: Richard Purdie