linux-stable.git/include/linux/leds.h, branch linux-2.6.30.y

leds: Add suspend/resume state flags to leds-gpio

2009-04-06T15:06:26+00:00

Add an option to preserve LED state when suspending/resuming to the LED
gpio driver. Based on a suggestion from Robert Jarzmik.

Tested-by: Robert Jarzmik 
Signed-off-by: Richard Purdie

leds: allow led-drivers to use a variable range of brightness values

2009-04-06T15:06:25+00:00

This patch allows drivers to override the default maximum brightness value
of 255.  We take care to preserve backwards-compatibility as much as
possible, so that user-space ABI doesn't change for existing drivers.
LED trigger code has also been updated to use the per-LED maximum.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Richard Purdie

leds: Add suspend/resume to the core class

2009-01-08T17:55:03+00:00

Add suspend/resume to the core class and remove all the now unneeded
code from various drivers. Originally the class code couldn't support
suspend/resume but since class_device can there is no reason for
each driver doing its own suspend/resume anymore.

leds: Make header variable naming consistent

2009-01-08T12:38:57+00:00

There is one place where the struct led_classdev as the function
argument is named differently. Fix it.

Signed-off-by: Wolfram Sang 
Signed-off-by: Richard Purdie

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