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.
Signed-off-by Greg Kroah-Hartman <[email protected]>
---
Documentation/ABI/testing/sysfs-driver-samsung-laptop | 19 drivers/platform/x86/Kconfig | 13 drivers/platform/x86/Makefile | 1 drivers/platform/x86/samsung-laptop.c | 805 ++++++++++++++++++ 4 files changed, 838 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.
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.
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 +805 -0
805 lines not on this page · raw message
PATCH 1/1 platform: Constify samsung-laptop.c
Change sabi_config to const.
Reduces data, increases text ~200 bytes.
$ size drivers/platform/x86/samsung-laptop.o* text data bss dec hex filename 6933 5084 1560 13577 3509 drivers/platform/x86/samsung-laptop.o.new 6765 5252 1560 13577 3509 drivers/platform/x86/samsung-laptop.o.old
Signed-off-by Joe Perches <[email protected]>
--- drivers/platform/x86/samsung-laptop.c | 12 ++++++------ 1 files changed, 6 insertions(+), 6 deletions(-)
drivers/platform/x86/samsung-laptop.c +6 -6
@@ -108,12 +108,12 @@ struct sabi_performance_level {struct sabi_config {const char *test_string;u16 main_function; -struct sabi_header_offsets header_offsets; -struct sabi_commands commands; -struct sabi_performance_level performance_levels[4 ]; +const struct sabi_header_offsets header_offsets; +const struct sabi_commands commands; +const struct sabi_performance_level performance_levels[4 ]; }; -static struct sabi_config sabi_configs[] = { +static const struct sabi_config sabi_configs[] = { { .test_string ="SECLINUX" ,
@@ -211,7 +211,7 @@ static struct sabi_config sabi_configs[] = { { }, }; -static struct sabi_config *sabi_config; +static const struct sabi_config *sabi_config;static void __iomem *sabi;static void __iomem *sabi_iface;
@@ -467,7 +467,7 @@ static ssize_t set_performance_level(struct device *dev,if (count >=1 ) {int i;for (i =0 ; sabi_config->performance_levels[i].name; ++i) { -struct sabi_performance_level *level = +const struct sabi_performance_level *level = &sabi_config->performance_levels[i];if (!strncasecmp (level->name, buf,strlen (level->name))) { sabi_set_command(sabi_config->commands.set_performance_level,
Signature · 1 line
1.7.4.2.g597a6.dirty