asus-laptop: add base driver
Adds the new driver and make ASUS_LAPTOP and ACPI_ASUS incompatible. It may be strange to use ASUS_CREATE_DEVICE_ATTR and ASUS_SET_DEVICE_ATTR now, but these macro will be very usefull in next patchs. ASUS_HANDLE and ASUS_HANDLE_INIT comes from IBM_HANDLE and IBM_HANDLE_INIT, with some modification, and will also be used in next patchs. Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Corentin Chary
Len Brown
Родитель
5263bf65d6
Коммит
85091b7189
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@ -584,6 +584,14 @@ W: http://sourceforge.net/projects/acpi4asus
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W: http://xf.iksaif.net/acpi4asus
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S: Maintained
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ASUS LAPTOP EXTRAS DRIVER
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P: Corentin Chary
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M: corentincj@iksaif.net
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L: acpi4asus-user@lists.sourceforge.net
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W: http://sourceforge.net/projects/acpi4asus
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W: http://xf.iksaif.net/acpi4asus
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S: Maintained
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ATA OVER ETHERNET DRIVER
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P: Ed L. Cashin
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M: ecashin@coraid.com
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@ -186,19 +186,22 @@ config ACPI_ASUS
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Note: display switching code is currently considered EXPERIMENTAL,
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toying with these values may even lock your machine.
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All settings are changed via /proc/acpi/asus directory entries. Owner
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and group for these entries can be set with asus_uid and asus_gid
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parameters.
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More information and a userspace daemon for handling the extra buttons
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at <http://sourceforge.net/projects/acpi4asus/>.
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If you have an ACPI-compatible ASUS laptop, say Y or M here. This
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driver is still under development, so if your laptop is unsupported or
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something works not quite as expected, please use the mailing list
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available on the above page (acpi4asus-user@lists.sourceforge.net)
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available on the above page (acpi4asus-user@lists.sourceforge.net).
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NOTE: This driver is deprecated and will probably be removed soon,
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use asus-laptop instead.
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config ACPI_IBM
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tristate "IBM ThinkPad Laptop Extras"
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depends on X86
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@ -69,6 +69,23 @@ config TIFM_7XX1
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To compile this driver as a module, choose M here: the module will
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be called tifm_7xx1.
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config ASUS_LAPTOP
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tristate "Asus Laptop Extras (EXPERIMENTAL)"
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depends on X86
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depends on ACPI
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depends on EXPERIMENTAL && !ACPI_ASUS
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---help---
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This is the new Linux driver for Asus laptops. It may also support some
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MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
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standard ACPI events that go through /proc/acpi/events. It also adds
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support for video output switching, LCD backlight control, Bluetooth and
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Wlan control, and most importantly, allows you to blink those fancy LEDs.
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For more information and a userspace daemon for handling the extra
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buttons see <http://acpi4asus.sf.net/>.
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If you have an ACPI-compatible ASUS laptop, say Y or M here.
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config MSI_LAPTOP
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tristate "MSI Laptop Extras"
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depends on X86
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@ -6,6 +6,7 @@ obj- := misc.o # Dummy rule to force built-in.o to be made
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obj-$(CONFIG_IBM_ASM) += ibmasm/
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obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
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obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
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obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
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obj-$(CONFIG_LKDTM) += lkdtm.o
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obj-$(CONFIG_TIFM_CORE) += tifm_core.o
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obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o
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@ -0,0 +1,530 @@
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/*
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* asus-laptop.c - Asus Laptop Support
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*
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*
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* Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
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* Copyright (C) 2006 Corentin Chary
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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* The development page for this driver is located at
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* http://sourceforge.net/projects/acpi4asus/
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*
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* Credits:
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* Pontus Fuchs - Helper functions, cleanup
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* Johann Wiesner - Small compile fixes
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* John Belmonte - ACPI code for Toshiba laptop was a good starting point.
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* Eric Burghard - LED display support for W1N
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* Josh Green - Light Sens support
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* Thomas Tuttle - His first patch for led support was very helpfull
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*
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*/
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#include <linux/autoconf.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/err.h>
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#include <linux/proc_fs.h>
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#include <linux/platform_device.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#include <asm/uaccess.h>
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#define ASUS_LAPTOP_VERSION "0.40"
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#define ASUS_HOTK_NAME "Asus Laptop Support"
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#define ASUS_HOTK_CLASS "hotkey"
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#define ASUS_HOTK_DEVICE_NAME "Hotkey"
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#define ASUS_HOTK_HID "ATK0100"
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#define ASUS_HOTK_FILE "asus-laptop"
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#define ASUS_HOTK_PREFIX "\\_SB.ATKD."
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#define ASUS_LOG ASUS_HOTK_FILE ": "
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#define ASUS_ERR KERN_ERR ASUS_LOG
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#define ASUS_WARNING KERN_WARNING ASUS_LOG
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#define ASUS_NOTICE KERN_NOTICE ASUS_LOG
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#define ASUS_INFO KERN_INFO ASUS_LOG
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#define ASUS_DEBUG KERN_DEBUG ASUS_LOG
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MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Corentin Chary");
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MODULE_DESCRIPTION(ASUS_HOTK_NAME);
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MODULE_LICENSE("GPL");
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#define ASUS_HANDLE(object, paths...) \
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static acpi_handle object##_handle = NULL; \
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static char *object##_paths[] = { paths }
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/*
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* This is the main structure, we can use it to store anything interesting
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* about the hotk device
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*/
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struct asus_hotk {
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char *name; //laptop name
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struct acpi_device *device; //the device we are in
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acpi_handle handle; //the handle of the hotk device
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char status; //status of the hotk, for LEDs, ...
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u16 event_count[128]; //count for each event TODO make this better
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};
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/*
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* This header is made available to allow proper configuration given model,
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* revision number , ... this info cannot go in struct asus_hotk because it is
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* available before the hotk
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*/
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static struct acpi_table_header *asus_info;
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/* The actual device the driver binds to */
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static struct asus_hotk *hotk;
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/*
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* The hotkey driver declaration
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*/
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static int asus_hotk_add(struct acpi_device *device);
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static int asus_hotk_remove(struct acpi_device *device, int type);
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static struct acpi_driver asus_hotk_driver = {
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.name = ASUS_HOTK_NAME,
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.class = ASUS_HOTK_CLASS,
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.ids = ASUS_HOTK_HID,
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.ops = {
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.add = asus_hotk_add,
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.remove = asus_hotk_remove,
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},
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};
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/*
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* This function evaluates an ACPI method, given an int as parameter, the
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* method is searched within the scope of the handle, can be NULL. The output
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* of the method is written is output, which can also be NULL
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*
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* returns 1 if write is successful, 0 else.
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*/
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static int write_acpi_int(acpi_handle handle, const char *method, int val,
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struct acpi_buffer *output)
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{
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struct acpi_object_list params; //list of input parameters (an int here)
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union acpi_object in_obj; //the only param we use
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acpi_status status;
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params.count = 1;
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params.pointer = &in_obj;
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in_obj.type = ACPI_TYPE_INTEGER;
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in_obj.integer.value = val;
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status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
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return (status == AE_OK);
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}
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static int read_acpi_int(acpi_handle handle, const char *method, int *val,
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struct acpi_object_list *params)
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{
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struct acpi_buffer output;
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union acpi_object out_obj;
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acpi_status status;
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output.length = sizeof(out_obj);
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output.pointer = &out_obj;
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status = acpi_evaluate_object(handle, (char *)method, params, &output);
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*val = out_obj.integer.value;
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return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER);
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}
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/*
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* Platform device handlers
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*/
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/*
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* We write our info in page, we begin at offset off and cannot write more
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* than count bytes. We set eof to 1 if we handle those 2 values. We return the
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* number of bytes written in page
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*/
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static ssize_t show_infos(struct device *dev,
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struct device_attribute *attr, char *page)
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{
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int len = 0;
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int temp;
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char buf[16]; //enough for all info
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/*
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* We use the easy way, we don't care of off and count, so we don't set eof
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* to 1
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*/
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len += sprintf(page, ASUS_HOTK_NAME " " ASUS_LAPTOP_VERSION "\n");
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len += sprintf(page + len, "Model reference : %s\n", hotk->name);
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/*
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* The SFUN method probably allows the original driver to get the list
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* of features supported by a given model. For now, 0x0100 or 0x0800
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* bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
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* The significance of others is yet to be found.
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*/
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if (read_acpi_int(hotk->handle, "SFUN", &temp, NULL))
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len +=
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sprintf(page + len, "SFUN value : 0x%04x\n", temp);
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/*
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* Another value for userspace: the ASYM method returns 0x02 for
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* battery low and 0x04 for battery critical, its readings tend to be
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* more accurate than those provided by _BST.
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* Note: since not all the laptops provide this method, errors are
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* silently ignored.
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*/
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if (read_acpi_int(hotk->handle, "ASYM", &temp, NULL))
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len +=
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sprintf(page + len, "ASYM value : 0x%04x\n", temp);
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if (asus_info) {
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snprintf(buf, 16, "%d", asus_info->length);
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len += sprintf(page + len, "DSDT length : %s\n", buf);
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snprintf(buf, 16, "%d", asus_info->checksum);
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len += sprintf(page + len, "DSDT checksum : %s\n", buf);
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snprintf(buf, 16, "%d", asus_info->revision);
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len += sprintf(page + len, "DSDT revision : %s\n", buf);
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snprintf(buf, 7, "%s", asus_info->oem_id);
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len += sprintf(page + len, "OEM id : %s\n", buf);
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snprintf(buf, 9, "%s", asus_info->oem_table_id);
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len += sprintf(page + len, "OEM table id : %s\n", buf);
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snprintf(buf, 16, "%x", asus_info->oem_revision);
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len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
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snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
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len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
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snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
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len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
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}
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return len;
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}
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static int parse_arg(const char *buf, unsigned long count, int *val)
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{
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if (!count)
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return 0;
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if (count > 31)
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return -EINVAL;
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if (sscanf(buf, "%i", val) != 1)
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return -EINVAL;
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return count;
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}
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static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
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{
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/* TODO Find a better way to handle events count. */
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if (!hotk)
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return;
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acpi_bus_generate_event(hotk->device, event,
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hotk->event_count[event % 128]++);
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return;
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}
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#define ASUS_CREATE_DEVICE_ATTR(_name) \
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struct device_attribute dev_attr_##_name = { \
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.attr = { \
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.name = __stringify(_name), \
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.mode = 0, \
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.owner = THIS_MODULE }, \
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.show = NULL, \
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.store = NULL, \
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}
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#define ASUS_SET_DEVICE_ATTR(_name, _mode, _show, _store) \
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do { \
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dev_attr_##_name.attr.mode = _mode; \
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dev_attr_##_name.show = _show; \
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dev_attr_##_name.store = _store; \
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} while(0)
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static ASUS_CREATE_DEVICE_ATTR(infos);
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static struct attribute *asuspf_attributes[] = {
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&dev_attr_infos.attr,
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NULL
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};
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static struct attribute_group asuspf_attribute_group = {
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.attrs = asuspf_attributes
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};
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static struct platform_driver asuspf_driver = {
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.driver = {
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.name = ASUS_HOTK_FILE,
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.owner = THIS_MODULE,
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}
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};
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static struct platform_device *asuspf_device;
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static void asus_hotk_add_fs(void)
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{
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ASUS_SET_DEVICE_ATTR(infos, 0444, show_infos, NULL);
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}
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static int asus_handle_init(char *name, acpi_handle *handle,
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char **paths, int num_paths)
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{
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int i;
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acpi_status status;
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for (i = 0; i < num_paths; i++) {
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status = acpi_get_handle(NULL, paths[i], handle);
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if (ACPI_SUCCESS(status))
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return 0;
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}
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*handle = NULL;
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return -ENODEV;
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}
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#define ASUS_HANDLE_INIT(object) \
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asus_handle_init(#object, &object##_handle, object##_paths, \
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ARRAY_SIZE(object##_paths))
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/*
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* This function is used to initialize the hotk with right values. In this
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* method, we can make all the detection we want, and modify the hotk struct
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*/
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static int asus_hotk_get_info(void)
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{
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
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union acpi_object *model = NULL;
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int bsts_result;
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char *string = NULL;
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acpi_status status;
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/*
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* Get DSDT headers early enough to allow for differentiating between
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* models, but late enough to allow acpi_bus_register_driver() to fail
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* before doing anything ACPI-specific. Should we encounter a machine,
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* which needs special handling (i.e. its hotkey device has a different
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* HID), this bit will be moved. A global variable asus_info contains
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* the DSDT header.
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*/
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status = acpi_get_table(ACPI_TABLE_ID_DSDT, 1, &dsdt);
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if (ACPI_FAILURE(status))
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printk(ASUS_WARNING "Couldn't get the DSDT table header\n");
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else
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asus_info = dsdt.pointer;
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/* We have to write 0 on init this far for all ASUS models */
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if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
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printk(ASUS_ERR "Hotkey initialization failed\n");
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return -ENODEV;
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}
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/* This needs to be called for some laptops to init properly */
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if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result, NULL))
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printk(ASUS_WARNING "Error calling BSTS\n");
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else if (bsts_result)
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printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n",
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bsts_result);
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/*
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* Try to match the object returned by INIT to the specific model.
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* Handle every possible object (or the lack of thereof) the DSDT
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* writers might throw at us. When in trouble, we pass NULL to
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* asus_model_match() and try something completely different.
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*/
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if (buffer.pointer) {
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model = buffer.pointer;
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switch (model->type) {
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case ACPI_TYPE_STRING:
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string = model->string.pointer;
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break;
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case ACPI_TYPE_BUFFER:
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string = model->buffer.pointer;
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break;
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default:
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string = "";
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break;
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}
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}
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hotk->name = kstrdup(string, GFP_KERNEL);
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if (!hotk->name)
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return -ENOMEM;
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if(*string)
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printk(ASUS_NOTICE " %s model detected\n", string);
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kfree(model);
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return AE_OK;
|
||||
}
|
||||
|
||||
static int asus_hotk_check(void)
|
||||
{
|
||||
int result = 0;
|
||||
|
||||
result = acpi_bus_get_status(hotk->device);
|
||||
if (result)
|
||||
return result;
|
||||
|
||||
if (hotk->device->status.present) {
|
||||
result = asus_hotk_get_info();
|
||||
} else {
|
||||
printk(ASUS_ERR "Hotkey device not present, aborting\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static int asus_hotk_found;
|
||||
|
||||
static int asus_hotk_add(struct acpi_device *device)
|
||||
{
|
||||
acpi_status status = AE_OK;
|
||||
int result;
|
||||
|
||||
if (!device)
|
||||
return -EINVAL;
|
||||
|
||||
printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
|
||||
ASUS_LAPTOP_VERSION);
|
||||
|
||||
hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
|
||||
if (!hotk)
|
||||
return -ENOMEM;
|
||||
memset(hotk, 0, sizeof(struct asus_hotk));
|
||||
|
||||
hotk->handle = device->handle;
|
||||
strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
|
||||
strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
|
||||
acpi_driver_data(device) = hotk;
|
||||
hotk->device = device;
|
||||
|
||||
result = asus_hotk_check();
|
||||
if (result)
|
||||
goto end;
|
||||
|
||||
asus_hotk_add_fs();
|
||||
|
||||
/*
|
||||
* We install the handler, it will receive the hotk in parameter, so, we
|
||||
* could add other data to the hotk struct
|
||||
*/
|
||||
status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
|
||||
asus_hotk_notify, hotk);
|
||||
if (ACPI_FAILURE(status))
|
||||
printk(ASUS_ERR "Error installing notify handler\n");
|
||||
|
||||
asus_hotk_found = 1;
|
||||
|
||||
end:
|
||||
if (result) {
|
||||
kfree(hotk->name);
|
||||
kfree(hotk);
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static int asus_hotk_remove(struct acpi_device *device, int type)
|
||||
{
|
||||
acpi_status status = 0;
|
||||
|
||||
if (!device || !acpi_driver_data(device))
|
||||
return -EINVAL;
|
||||
|
||||
status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
|
||||
asus_hotk_notify);
|
||||
if (ACPI_FAILURE(status))
|
||||
printk(ASUS_ERR "Error removing notify handler\n");
|
||||
|
||||
kfree(hotk->name);
|
||||
kfree(hotk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit asus_laptop_exit(void)
|
||||
{
|
||||
acpi_bus_unregister_driver(&asus_hotk_driver);
|
||||
sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
|
||||
platform_device_unregister(asuspf_device);
|
||||
platform_driver_unregister(&asuspf_driver);
|
||||
|
||||
kfree(asus_info);
|
||||
}
|
||||
|
||||
static int __init asus_laptop_init(void)
|
||||
{
|
||||
int result;
|
||||
|
||||
if (acpi_disabled)
|
||||
return -ENODEV;
|
||||
|
||||
if (!acpi_specific_hotkey_enabled) {
|
||||
printk(ASUS_ERR "Using generic hotkey driver\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
result = acpi_bus_register_driver(&asus_hotk_driver);
|
||||
if (result < 0)
|
||||
return result;
|
||||
|
||||
/*
|
||||
* This is a bit of a kludge. We only want this module loaded
|
||||
* for ASUS systems, but there's currently no way to probe the
|
||||
* ACPI namespace for ASUS HIDs. So we just return failure if
|
||||
* we didn't find one, which will cause the module to be
|
||||
* unloaded.
|
||||
*/
|
||||
if (!asus_hotk_found) {
|
||||
acpi_bus_unregister_driver(&asus_hotk_driver);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Register platform stuff */
|
||||
result = platform_driver_register(&asuspf_driver);
|
||||
if (result)
|
||||
goto fail_platform_driver;
|
||||
|
||||
asuspf_device = platform_device_alloc(ASUS_HOTK_FILE, -1);
|
||||
if (!asuspf_device) {
|
||||
result = -ENOMEM;
|
||||
goto fail_platform_device1;
|
||||
}
|
||||
|
||||
result = platform_device_add(asuspf_device);
|
||||
if (result)
|
||||
goto fail_platform_device2;
|
||||
|
||||
result = sysfs_create_group(&asuspf_device->dev.kobj,
|
||||
&asuspf_attribute_group);
|
||||
if (result)
|
||||
goto fail_sysfs;
|
||||
|
||||
return 0;
|
||||
|
||||
fail_sysfs:
|
||||
platform_device_del(asuspf_device);
|
||||
|
||||
fail_platform_device2:
|
||||
platform_device_put(asuspf_device);
|
||||
|
||||
fail_platform_device1:
|
||||
platform_driver_unregister(&asuspf_driver);
|
||||
|
||||
fail_platform_driver:
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
module_init(asus_laptop_init);
|
||||
module_exit(asus_laptop_exit);
|
||||
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