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path: root/drivers/platform/x86/compal-laptop.c
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2019-09-07platform/x86: compal-laptop: Initialize "value" in ec_read_u8()Yizhuo1-1/+1
In function ec_read_u8(), variable "value" could be uninitialized if ec_read() fails. However, "value" is returned directly and used in its callers. This is potentially unsafe. Signed-off-by: Yizhuo <yzhai003@ucr.edu> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1Thomas Gleixner1-14/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option [no]_[pad]_[ctrl] any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 176 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154040.652910950@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-09treewide: Use DEVICE_ATTR_RWJoe Perches1-12/+6
Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible. Done with perl script: $ git grep -w --name-only DEVICE_ATTR | \ xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(\s*S_IRUGO\s*\|\s*S_IWUSR|\s*S_IWUSR\s*\|\s*S_IRUGO\s*|\s*0644\s*)\)?\s*,\s*\1_show\s*,\s*\1_store\s*\)/DEVICE_ATTR_RW(\1)/g; print;}' Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-14dmi: Mark all struct dmi_system_id instances constChristoph Hellwig1-1/+1
... and __initconst if applicable. Based on similar work for an older kernel in the Grsecurity patch. [JD: fix toshiba-wmi build] [JD: add htcpen] [JD: move __initconst where checkscript wants it] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2017-07-11platform/x86: compal-laptop: constify attribute_group structures.Arvind Yadav1-1/+1
attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 6781 6144 34 12959 329f drivers/platform/x86/compal-laptop.o File size After adding 'const': text data bss dec hex filename 6845 6080 34 12959 329f drivers/platform/x86/compal-laptop.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2015-10-03compal-laptop: Add charge control limitRoald Frederickx1-1/+42
Add charge control limit to the power supply subsystem of the Compal platform driver. This apparently was present in the original driver by Cezary Jackiewicz at http://eko.one.pl/index.php?page=compal-laptop but it seems to have been overlooked. The Kconfig description is updated to reflect this addition. It now also mentions the hwmon interface that was already present. Signed-off-by: Roald Frederickx <roald.frederickx@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2015-06-19compal-laptop: Port to new backlight interface selection APIHans de Goede1-2/+2
Port the backlight selection logic to the new backlight interface selection API. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-03-13power_supply: Change ownership from driver to coreKrzysztof Kozlowski1-11/+18
Change the ownership of power_supply structure from each driver implementing the class to the power supply core. The patch changes power_supply_register() function thus all drivers implementing power supply class are adjusted. Each driver provides the implementation of power supply. However it should not be the owner of power supply class instance because it is exposed by core to other subsystems with power_supply_get_by_name(). These other subsystems have no knowledge when the driver will unregister the power supply. This leads to several issues when driver is unbound - mostly because user of power supply accesses freed memory. Instead let the core own the instance of struct 'power_supply'. Other users of this power supply will still access valid memory because it will be freed when device reference count reaches 0. Currently this means "it will leak" but power_supply_put() call in next patches will solve it. This solves invalid memory references in following race condition scenario: Thread 1: charger manager Thread 2: power supply driver, used by charger manager THREAD 1 (charger manager) THREAD 2 (power supply driver) ========================== ============================== psy = power_supply_get_by_name() Driver unbind, .remove power_supply_unregister() Device fully removed psy->get_property() The 'get_property' call is executed in invalid context because the driver was unbound and struct 'power_supply' memory was freed. This could be observed easily with charger manager driver (here compiled with max17040 fuel gauge): $ cat /sys/devices/virtual/power_supply/cm-battery/capacity & $ echo "1-0036" > /sys/bus/i2c/drivers/max17040/unbind [ 55.725123] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 55.732584] pgd = d98d4000 [ 55.734060] [00000000] *pgd=5afa2831, *pte=00000000, *ppte=00000000 [ 55.740318] Internal error: Oops: 80000007 [#1] PREEMPT SMP ARM [ 55.746210] Modules linked in: [ 55.749259] CPU: 1 PID: 2936 Comm: cat Tainted: G W 3.19.0-rc1-next-20141226-00048-gf79f475f3c44-dirty #1496 [ 55.760190] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [ 55.766270] task: d9b76f00 ti: daf54000 task.ti: daf54000 [ 55.771647] PC is at 0x0 [ 55.774182] LR is at charger_get_property+0x2f4/0x36c [ 55.779201] pc : [<00000000>] lr : [<c034b0b4>] psr: 60000013 [ 55.779201] sp : daf55e90 ip : 00000003 fp : 00000000 [ 55.790657] r10: 00000000 r9 : c06e2878 r8 : d9b26c68 [ 55.795865] r7 : dad81610 r6 : daec7410 r5 : daf55ebc r4 : 00000000 [ 55.802367] r3 : 00000000 r2 : daf55ebc r1 : 0000002a r0 : d9b26c68 [ 55.808879] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 55.815994] Control: 10c5387d Table: 598d406a DAC: 00000015 [ 55.821723] Process cat (pid: 2936, stack limit = 0xdaf54210) [ 55.827451] Stack: (0xdaf55e90 to 0xdaf56000) [ 55.831795] 5e80: 60000013 c01459c4 0000002a c06f8ef8 [ 55.839956] 5ea0: db651000 c06f8ef8 daebac00 c04cb668 daebac08 c0346864 00000000 c01459c4 [ 55.848115] 5ec0: d99eaa80 c06f8ef8 00000fff 00001000 db651000 c027f25c c027f240 d99eaa80 [ 55.856274] 5ee0: d9a06c00 c0146218 daf55f18 00001000 d99eaa80 db4c18c0 00000001 00000001 [ 55.864468] 5f00: daf55f80 c0144c78 c0144c54 c0107f90 00015000 d99eaab0 00000000 00000000 [ 55.872603] 5f20: 000051c7 00000000 db4c18c0 c04a9370 00015000 00001000 daf55f80 00001000 [ 55.880763] 5f40: daf54000 00015000 00000000 c00e53dc db4c18c0 c00e548c 0000000d 00008124 [ 55.888937] 5f60: 00000001 00000000 00000000 db4c18c0 db4c18c0 00001000 00015000 c00e5550 [ 55.897099] 5f80: 00000000 00000000 00001000 00001000 00015000 00000003 00000003 c000f364 [ 55.905239] 5fa0: 00000000 c000f1a0 00001000 00015000 00000003 00015000 00001000 0001333c [ 55.913399] 5fc0: 00001000 00015000 00000003 00000003 00000002 00000000 00000000 00000000 [ 55.921560] 5fe0: 7fffe000 be999850 0000a225 b6f3c19c 60000010 00000003 00000000 00000000 [ 55.929744] [<c034b0b4>] (charger_get_property) from [<c0346864>] (power_supply_show_property+0x48/0x20c) [ 55.939286] [<c0346864>] (power_supply_show_property) from [<c027f25c>] (dev_attr_show+0x1c/0x48) [ 55.948130] [<c027f25c>] (dev_attr_show) from [<c0146218>] (sysfs_kf_seq_show+0x84/0x104) [ 55.956298] [<c0146218>] (sysfs_kf_seq_show) from [<c0144c78>] (kernfs_seq_show+0x24/0x28) [ 55.964536] [<c0144c78>] (kernfs_seq_show) from [<c0107f90>] (seq_read+0x1b0/0x484) [ 55.972172] [<c0107f90>] (seq_read) from [<c00e53dc>] (__vfs_read+0x18/0x4c) [ 55.979188] [<c00e53dc>] (__vfs_read) from [<c00e548c>] (vfs_read+0x7c/0x100) [ 55.986304] [<c00e548c>] (vfs_read) from [<c00e5550>] (SyS_read+0x40/0x8c) [ 55.993164] [<c00e5550>] (SyS_read) from [<c000f1a0>] (ret_fast_syscall+0x0/0x48) [ 56.000626] Code: bad PC value [ 56.011652] ---[ end trace 7b64343fbdae8ef1 ]--- Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> [for the nvec part] Reviewed-by: Marc Dietrich <marvin24@gmx.de> [for compal-laptop.c] Acked-by: Darren Hart <dvhart@linux.intel.com> [for the mfd part] Acked-by: Lee Jones <lee.jones@linaro.org> [for the hid part] Acked-by: Jiri Kosina <jkosina@suse.cz> [for the acpi part] Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-13power_supply: Move run-time configuration to separate structureKrzysztof Kozlowski1-1/+1
Add new structure 'power_supply_config' for holding run-time initialization data like of_node, supplies and private driver data. The power_supply_register() function is changed so all power supply drivers need updating. When registering the power supply this new 'power_supply_config' should be used instead of directly initializing 'struct power_supply'. This allows changing the ownership of power_supply structure from driver to the power supply core in next patches. When a driver does not use of_node or supplies then it should use NULL as config. If driver uses of_node or supplies then it should allocate config on stack and initialize it with proper values. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Pavel Machek <pavel@ucw.cz> [for the nvec part] Reviewed-by: Marc Dietrich <marvin24@gmx.de> [for drivers/platform/x86/compal-laptop.c] Reviewed-by: Darren Hart <dvhart@linux.intel.com> [for drivers/hid/*] Reviewed-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-13compal-laptop: Check return value of power_supply_registerKrzysztof Kozlowski1-1/+3
The return value of power_supply_register() call was not checked and even on error probe() function returned 0. If registering failed then during unbind the driver tried to unregister power supply which was not actually registered. This could lead to memory corruption because power_supply_unregister() unconditionally cleans up given power supply. Fix this by checking return status of power_supply_register() call. In case of failure, clean up sysfs entries and fail the probe. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: 9be0fcb5ed46 ("compal-laptop: add JHL90, battery & hwmon interface") Cc: <stable@vger.kernel.org> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-03-13compal-laptop: Fix leaking hwmon deviceKrzysztof Kozlowski1-3/+3
The commit c2be45f09bb0 ("compal-laptop: Use devm_hwmon_device_register_with_groups") wanted to change the registering of hwmon device to resource-managed version. It mostly did it except the main thing - it forgot to use devm-like function so the hwmon device leaked after device removal or probe failure. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Fixes: c2be45f09bb0 ("compal-laptop: Use devm_hwmon_device_register_with_groups") Cc: <stable@vger.kernel.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-10-20platform: x86: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-08-16compal-laptop: correct invalid hwmon nameRoald Frederickx1-1/+1
Change the name of the hwmon interface from "compal-laptop" to "compal". A dash is an invalid character for a hwmon name and caused the call to hwmon_device_register_with_groups() to fail. Signed-off-by: Roald Frederickx <roald.frederickx@gmail.com> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2014-01-21compal-laptop: Use devm_hwmon_device_register_with_groupsGuenter Roeck1-29/+23
Simplify the code and create hwmon attributes as well as hwmon device in one go. With the new hwmon API, hwmon attributes are now attached to the hwmon device. Therefore, split hwmon and device attributes into two separate groups. Platform attributes are still attached to the platform device. Also use devm_kzalloc to allocate local data structures for further simplification. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2014-01-21compal-laptop: Replace SENSOR_DEVICE_ATTR with DEVICE_ATTRGuenter Roeck1-33/+33
The extra argument to SENSOR_DEVICE_ATTR is not used. It is therefore not necessary to use SENSOR_DEVICE_ATTR in the first place. Replace it with DEVICE_ATTR. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2014-01-21compal-laptop: Use devm_kzalloc to allocate local data structureGuenter Roeck1-7/+2
Reduce code size and simplify error path. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2013-09-05platform: x86: remove unnecessary platform_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2013-09-05platform: replace strict_strto*() with kstrto*()Jingoo Han1-2/+4
The usage of strict_strtoul() and strict_strtol() is not preferred, because strict_strtoul() and strict_strtol() are obsolete. Thus, kstrtoul() and kstrtol() should be used. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2013-01-03Drivers: platform: x86: remove __dev* attributes.Greg Kroah-Hartman1-5/+5
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Joey Lee <jlee@novell.com> Cc: Matthew Garrett <mjg@redhat.com> Cc: Peter Feuerer <peter@piie.net> Cc: Corentin Chary <corentin.chary@gmail.com> Cc: Cezary Jackiewicz <cezary.jackiewicz@gmail.com> Cc: Robert Gerlach <khnz@gmx.de> Cc: Ike Panhc <ike.pan@canonical.com> Cc: Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-20compal-laptop: switch to using use MODULE_DEVICE_TABLEDmitry Torokhov1-13/+1
Use MODULE_DEVCE_TABLE instead of rolling MODULE_ALIAS by hand. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2012-01-13module_param: make bool parameters really bool (drivers & misc)Rusty Russell1-1/+1
module_param(bool) used to counter-intuitively take an int. In fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy trick. It's time to remove the int/unsigned int option. For this version it'll simply give a warning, but it'll break next kernel version. Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2011-07-07drivers/platform/x86: Fix memory leakAndre Bartke1-1/+3
data is not freed in the error case of compal_probe(). Signed-off-by: Andre Bartke <andre.bartke@gmail.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-05-29Merge branch 'for_linus' of ↵Linus Torvalds1-13/+9
git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (43 commits) acer-wmi: support integer return type from WMI methods msi-laptop: fix section mismatch in reference from the function load_scm_model_init acer-wmi: support to set communication device state by new wmid method acer-wmi: allow 64-bits return buffer from WMI methods acer-wmi: check the existence of internal 3G device when set capability platform/x86:delete two unused variables support wlan hotkey on Acer Travelmate 5735Z platform-x86: intel_mid_thermal: Fix memory leak platform/x86: Fix Makefile for intel_mid_powerbtn platform/x86: Simplify intel_mid_powerbtn acer-wmi: Delete out-of-date documentation acerhdf: Clean up includes acerhdf: Drop pointless dependency on THERMAL_HWMON acer-wmi: Update MAINTAINERS wmi: Orphan ACPI-WMI driver tc1100-wmi: Orphan driver acer-wmi: does not allow negative number set to initial device state platform/oaktrail: ACPI EC Extra driver for Oaktrail thinkpad_acpi: Convert printks to pr_<level> thinkpad_acpi: Correct !CONFIG_THINKPAD_ACPI_VIDEO warning ...
2011-05-29Merge branch 'ec-cleanup' into releaseLen Brown1-7/+7
Conflicts: drivers/platform/x86/compal-laptop.c
2011-05-27compal-laptop: Convert printks to pr_<level>Joe Perches1-13/+9
Add pr_fmt. Convert printks to pr_<level> removing DRIVER_NAME prefix. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-04-01ACPI EC: remove dead codeThomas Renninger1-6/+6
static void acpi_ec_gpe_query(void *ec_cxt); -> The function is right above this declaration -> not needed. poll_force is also not used, cleaned up in ec.c and its users: compal-laptop and msi-laptop. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
2011-03-28platform-drivers: x86: fix common misspellingsLucas De Marchi1-1/+1
Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-03-28platform-driver-x86: fix wrong merge for compal-laptop.cAxel Lin1-3/+3
I found the commit 80183a4b "compal-laptop/fujitsu-laptop/msi-laptop: make dmi_check_cb to return 1 instead of 0" has wrong patch merge. The original patch change the return value for dmi_check_cb(): https://lkml.org/lkml/2010/7/2/88 But commit 80183a4b changed the return value for set_backlight_level. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-03-22backlight: add backlight typeMatthew Garrett1-0/+1
There may be multiple ways of controlling the backlight on a given machine. Allow drivers to expose the type of interface they are providing, making it possible for userspace to make appropriate policy decisions. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: David Airlie <airlied@linux.ie> Cc: Alex Deucher <alexdeucher@gmail.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-07Support KHLB2 in the compal laptop driverAlbert Astals Cid1-0/+8
Add the KHLB2 model identifier to the list of supported models Signed-off-by: Albert Astals Cid <aacid@kde.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-16platform/x86: move rfkill for Dell Mini 1012 to compal-laptopVictor van den Elzen1-0/+9
Like others in the Mini series, the Dell Mini 1012 does not support the smbios hook required by dell-laptop. Signed-off-by: Victor van den Elzen <victor.vde@gmail.com> Cc: stable <stable@kernel.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03compal-laptop/fujitsu-laptop/msi-laptop: make dmi_check_cb to return 1 ↵Axel Lin1-1/+1
instead of 0 dmi_check_system() walks the table running matching functions until someone returns non zero or we hit the end. This patch makes dmi_check_cb to return 1 so dmi_check_system() return immediately when a match is found. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Jonathan Woithe <jwoithe@physics.adelaide.edu.au> Cc: Matthew Garrett <mjg@redhat.com>a Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-08-03compal-laptop: add JHL90, battery & hwmon interfaceRoald Frederickx1-105/+822
The driver now supports the Compal JHL90 (which I use) and it has some added features. The biggest novelties are a battery interface (power_supply) and a temperature and fan control interface (hmwon). It also adds a power-off feature to the backlight subsystem and it exports a few files that can enable/disable wake_on_XXX events. Much of the original code of the old features is still there, but I've changed some names to keep the naming more coherent with the added functionalities. (Sorry for the huge patch) Some technical stuff about the new driver: First of all, I'm not sure if the extra features also work on the other Compal boards. Currently they only get enabled if the DMI data indicates you are on a JHL90 board. Secondly, I've noticed a quirk in my fan controller. I have to re-send the wanted pwm-level to the controller every so often. If I don't do this, the fanspeed will slowly rise until after a couple of minutes it's at full speed. (Note that every normal userland application will probably update the pwm-level every so often anyway, based on temperature readings, so this might not be an issue in practice) If this turns out to be a problem with all the controllers, maybe we should implement a kernel timer and have the driver re-send the pwm level every XX seconds to make this transparent to userspace? (However, I couldn't immediately find a way to do this cleanly.) Additional information can be found in the source comments. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: add missing semicolon] Signed-off-by: Roald Frederickx <roald.frederickx@gmail.com> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2010-03-16backlight: Allow properties to be passed at registrationMatthew Garrett1-4/+7
Values such as max_brightness should be set before backlights are registered, but the current API doesn't allow that. Add a parameter to backlight_device_register and update drivers to ensure that they set this correctly. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
2010-02-25compal-laptop: Replace sysfs support with rfkill supportMario Limonciello1-138/+63
This drops the support for manually groking the files in sysfs to turn on and off the WLAN and BT for Compal laptops in favor of platform rfkill support. It has been combined into a single patch to not introduce regressions in the process of simply adding rfkill support Signed-off-by: Mario Limonciello <Mario_Limonciello@Dell.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Cezary Jackiewicz <cezary.jackiewicz@gmail.com>
2010-02-25compal-laptop: Add support for known Compal made Dell laptopsMario Limonciello1-0/+46
The following Dell laptops are known to have been manufacturer by Compal and are supported by the compal-laptop platform driver - Mini 9 - Mini 10 - Mini 12 - Mini 10v - Inspiron 11z Signed-off-by: Mario Limonciello <Mario_Limonciello@Dell.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Cezary Jackiewicz <cezary.jackiewicz@gmail.com>
2009-12-12drop explicit include of autoconf.hSam Ravnborg1-1/+0
kbuild.h forces include of autoconf.h on the commandline using -include - so we do not need to include the file explicit. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2008-12-19create drivers/platform/x86/ from drivers/misc/Len Brown1-0/+406
Move x86 platform specific drivers from drivers/misc/ to a new home under drivers/platform/x86/. The community has been maintaining x86 vendor-specific platform specific drivers under /drivers/misc/ for a few years. The oldest ones started life under drivers/acpi. They moved out of drivers/acpi/ because they don't actually implement the ACPI specification, but either simply use ACPI, or implement vendor-specific ACPI extensions. In the future we anticipate... drivers/misc/ will go away. other architectures will create drivers/platform/<arch> Signed-off-by: Len Brown <len.brown@intel.com>
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