Platform: add Samsung Laptop platform driver
Subsystems (2)
PATCH 1/1 Platform: add Samsung Laptop platform driver
From: Greg Kroah-Hartman <[email protected]>
This adds the samsung-laptop driver to the kernel. It now supports all known Samsung laptops that use the SABI interface.
--- Documentation/ABI/testing/sysfs-driver-samsung-laptop | 19 drivers/platform/x86/Kconfig | 13 drivers/platform/x86/Makefile | 1 drivers/platform/x86/samsung-laptop.c | 832 ++++++++++++++++++ 4 files changed, 865 insertions(+)
Matthew, this is a copy of the latest version in the linux-next tree of the driver. Once it has been accepted into your tree, I'll delete the staging driver. Or, if you want to give your ACK, I can just move the driver from staging into this directory in my tree, which will properly preserve the history of the code.
v2 - I have also addressed all of the review comments you gave me
previously, and fixed a bug in the previous version that broke the driver on the N128 laptop, as well as added support for a wide range of other laptops thanks to many testers who sent in patches.
v3 - Added a few more device ids, const changes, and now supports
variable brightness levels as not all laptops are the same with this.
Documentation/ABI/testing/sysfs-driver-samsung-laptop new file +19 -0
@@ -0,0 +1,19 @@ +What: /sys/devices/platform/samsung/performance_level +Date: January 1, 2010 +KernelVersion: 2.6.33 +Contact: Greg Kroah-Hartman <[email protected]> +Description: Some Samsung laptops have different "performance levels" + that are can be modified by a function key, and by this + sysfs file. These values don't always make a whole lot + of sense, but some users like to modify them to keep + their fans quiet at all costs. Reading from this file + will show the current performance level. Writing to the + file can change this value. + Valid options: + "silent" + "normal" + "overclock" + Note that not all laptops support all of these options. + Specifically, not all support the "overclock" option, + and it's still unknown if this value even changes + anything, other than making the user feel a bit better.
drivers/platform/x86/Kconfig +13 -0
@@ -654,4 +654,17 @@ config XO1_RFKILL Support for enabling/disabling the WLAN interface on the OLPC XO-1 laptop. +config SAMSUNG_LAPTOP + tristate "Samsung Laptop driver" + depends on RFKILL && BACKLIGHT_CLASS_DEVICE && X86 + ---help--- + This module implements a driver for a wide range of different + Samsung laptops. It offers control over the different + function keys, wireless LED, LCD backlight level, and + sometimes provides a "performance_control" sysfs file to allow + the performance level of the laptop to be changed. + + To compile this driver as a module, choose M here: the module + will be called samsung-laptop. + endif # X86_PLATFORM_DEVICES
drivers/platform/x86/Makefile +1 -0
@@ -34,3 +34,4 @@ obj-$(CONFIG_INTEL_IPS) += intel_ips.o obj-$(CONFIG_GPIO_INTEL_PMIC) += intel_pmic_gpio.o obj-$(CONFIG_XO1_RFKILL) += xo1-rfkill.o obj-$(CONFIG_IBM_RTL) += ibm_rtl.o +obj-$(CONFIG_SAMSUNG_LAPTOP) += samsung-laptop.o
drivers/platform/x86/samsung-laptop.c new file +832 -0
832 lines not on this page · raw message