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Commit a59ec1e7 authored by Michael Hennerich's avatar Michael Hennerich Committed by Linus Torvalds
Browse files

backlight: new driver for the ADP8870 backlight devices 



Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7f81c889

Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870

0 → 100644
+56 −0
Original line number Diff line number Diff line 
What:		/sys/class/backlight/<backlight>/<ambient light zone>_max

What:		/sys/class/backlight/<backlight>/l1_daylight_max

What:		/sys/class/backlight/<backlight>/l2_bright_max

What:		/sys/class/backlight/<backlight>/l3_office_max

What:		/sys/class/backlight/<backlight>/l4_indoor_max

What:		/sys/class/backlight/<backlight>/l5_dark_max

Date:		Mai 2011

KernelVersion:	2.6.40

Contact:	device-drivers-devel@blackfin.uclinux.org

Description:

		Control the maximum brightness for <ambient light zone>

		on this <backlight>. Values are between 0 and 127. This file

		will also show the brightness level stored for this

		<ambient light zone>.



What:		/sys/class/backlight/<backlight>/<ambient light zone>_dim

What:		/sys/class/backlight/<backlight>/l2_bright_dim

What:		/sys/class/backlight/<backlight>/l3_office_dim

What:		/sys/class/backlight/<backlight>/l4_indoor_dim

What:		/sys/class/backlight/<backlight>/l5_dark_dim

Date:		Mai 2011

KernelVersion:	2.6.40

Contact:	device-drivers-devel@blackfin.uclinux.org

Description:

		Control the dim brightness for <ambient light zone>

		on this <backlight>. Values are between 0 and 127, typically

		set to 0. Full off when the backlight is disabled.

		This file will also show the dim brightness level stored for

		this <ambient light zone>.



What:		/sys/class/backlight/<backlight>/ambient_light_level

Date:		Mai 2011

KernelVersion:	2.6.40

Contact:	device-drivers-devel@blackfin.uclinux.org

Description:

		Get conversion value of the light sensor.

		This value is updated every 80 ms (when the light sensor

		is enabled). Returns integer between 0 (dark) and

		8000 (max ambient brightness)



What:		/sys/class/backlight/<backlight>/ambient_light_zone

Date:		Mai 2011

KernelVersion:	2.6.40

Contact:	device-drivers-devel@blackfin.uclinux.org

Description:

		Get/Set current ambient light zone. Reading returns

		integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark).

		Writing a value between 1..5 forces the backlight controller

		to enter the corresponding ambient light zone.

		Writing 0 returns to normal/automatic ambient light level

		operation. The ambient light sensing feature on these devices

		is an extension to the API documented in

		Documentation/ABI/stable/sysfs-class-backlight.

		It can be enabled by writing the value stored in

		/sys/class/backlight/<backlight>/max_brightness to

		/sys/class/backlight/<backlight>/brightness.
 
 No newline at end of file

drivers/video/backlight/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -302,6 +302,18 @@ config BACKLIGHT_ADP8860 
	  To compile this driver as a module, choose M here: the module will

	  be called adp8860_bl.



config BACKLIGHT_ADP8870

	tristate "Backlight Driver for ADP8870 using WLED"

	depends on BACKLIGHT_CLASS_DEVICE && I2C

	select NEW_LEDS

	select LEDS_CLASS

	help

	  If you have a LCD backlight connected to the ADP8870,

	  say Y here to enable this driver.



	  To compile this driver as a module, choose M here: the module will

	  be called adp8870_bl.



config BACKLIGHT_88PM860X

	tristate "Backlight Driver for 88PM8606 using WLED"

	depends on MFD_88PM860X

drivers/video/backlight/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ obj-$(CONFIG_BACKLIGHT_WM831X) += wm831x_bl.o 
obj-$(CONFIG_BACKLIGHT_ADX)    += adx_bl.o

obj-$(CONFIG_BACKLIGHT_ADP5520)	+= adp5520_bl.o

obj-$(CONFIG_BACKLIGHT_ADP8860)	+= adp8860_bl.o

obj-$(CONFIG_BACKLIGHT_ADP8870)	+= adp8870_bl.o

obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o

obj-$(CONFIG_BACKLIGHT_PCF50633)	+= pcf50633-backlight.o