linux-stable.git/drivers/leds, branch linux-2.6.25.y

leds: fix platform driver hotplug/coldplug

2008-04-16T02:35:40+00:00

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform
modalias is prefixed with "platform:". Add MODULE_ALIAS() to the
hotpluggable platform LED drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net: more drivers, registration fixes]
Signed-off-by: Kay Sievers 
Signed-off-by: David Brownell 
Acked-by: Richard Purdie 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

leds: Remove incorrect use of preempt_count() from leds-gpio

2008-03-31T22:31:13+00:00

It appears that we can't just check to see if we're in a task
context ... so instead of trying that, just make the relevant
leds always schedule a little worklet.

Signed-off-by: David Brownell 
Signed-off-by: Richard Purdie

leds: Fix potential leds-gpio oops

2008-03-31T22:31:13+00:00

Call gpio_cansleep only after gpio_request succeeded avoiding an
oops.

Signed-off-by: Uwe Kleine-König 
Acked-by: David Brownell 
Signed-off-by: Richard Purdie

PWM LED driver

2008-02-08T17:22:38+00:00

This is a LED driver using the PWM on newer SOCs from Atmel; brightness is
controlled by changing the PWM duty cycle.  So for example if you've set up
two leds labeled "pwm0" and "pwm1":

	echo 0 > /sys/class/leds/pwm2/brightness	# off (0%)
	echo 80 > /sys/class/leds/pwm2/brightness
	echo 255 > /sys/class/leds/pwm2/brightness	# on (100%)

Note that "brightness" here isn't linear; maybe that should change.  Going
from 4 to 8 probably doubles perceived brightness, while 244 to 248 is
imperceptible.

This is mostly intended to be a simple example of PWM, although it's
realistic since LCD backlights are often driven with PWM to conserve
battery power (and offer brightness options).

Signed-off-by: David Brownell 
Signed-off-by: Haavard Skinnemoen 
Cc: Richard Purdie 
Cc: Andrew Victor 
Cc: Nicolas Ferre 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

leds: Add HP Jornada 6xx driver

2008-02-07T10:10:28+00:00

Add support for the LEDs on the HP Jornada 620/660/680/690 devices.

Signed-off-by: Kristoffer Ericson 
Signed-off-by: Richard Purdie

leds: Remove the now uneeded ixp4xx driver

2008-02-07T10:02:39+00:00

All boards using the IXP4XX-GPIO-LED driver have been updated to use
the generic leds-gpio driver instead.

Signed-off-by: Rod Whitby 
Signed-off-by: Richard Purdie

leds: Add power LED to the wrap driver

2008-02-07T09:52:03+00:00

The 3rd LED on this board is something like a power-led, it is on all the
time. With this change to the leds-wrap driver it is possible to use this
LED too.

Signed-off-by: Michael Loeffler 
Signed-off-by: Richard Purdie

leds: Fix led-gpio active_low default brightness

2008-02-07T09:52:02+00:00

When gpio_direction_output() is called, led_dat->active_low is used
as default value. This means that the led will always be off by
default. cdev.brightness should really have been set to LED_OFF
unconditionally to reflect this behavior.

Signed-off-by: Raphael Assenat 
Signed-off-by: Richard Purdie

leds: hw acceleration for Clevo mail LED driver

2008-02-07T09:52:02+00:00

Add support for hardware accelerated LED blinking for the mail LED
commonly found on Clevo notebooks.

Signed-off-by: Márton Németh 
Signed-off-by: Richard Purdie

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