eeepc-laptop: add base driver
This patch is based on Eric Cooper's work to clean the original asus_acpi
given by Asus. It's a platform driver (/sys/devices/platform/eeepc/)
wich support:
- hotkeys - wlan on/off - camera on/off - cardr on/off
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Eric Cooper
Len Brown
parent
a01e035ebb
commit
e59f87966a
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@ -1531,6 +1531,13 @@ L: bluesmoke-devel@lists.sourceforge.net
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W: bluesmoke.sourceforge.net
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S: Maintained
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EEEPC 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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S: Maintained
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EEPRO100 NETWORK DRIVER
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P: Andrey V. Savochkin
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M: saw@saw.sw.com.sg
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@ -351,6 +351,17 @@ config INTEL_MENLOW
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If unsure, say N.
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config EEEPC_LAPTOP
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tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
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depends on X86
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depends on ACPI
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depends on EXPERIMENTAL
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---help---
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This driver supports the Fn-Fx keys on Eee PC laptops.
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It also adds the ability to switch camera/wlan on/off.
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If you have an Eee PC laptop, say Y or M here.
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config ENCLOSURE_SERVICES
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tristate "Enclosure Services"
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default n
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@ -7,7 +7,8 @@ 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_ACER_WMI) += acer-wmi.o
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obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
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obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
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obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
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obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
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obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
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obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
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@ -0,0 +1,442 @@
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/*
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* eepc-laptop.c - Asus Eee PC extras
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*
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* Based on asus_acpi.c as patched for the Eee PC by Asus:
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* ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
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* Based on eee.c from eeepc-linux
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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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#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/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 <linux/uaccess.h>
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#define EEEPC_LAPTOP_VERSION "0.1"
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#define EEEPC_HOTK_NAME "Eee PC Hotkey Driver"
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#define EEEPC_HOTK_FILE "eeepc"
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#define EEEPC_HOTK_CLASS "hotkey"
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#define EEEPC_HOTK_DEVICE_NAME "Hotkey"
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#define EEEPC_HOTK_HID "ASUS010"
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#define EEEPC_LOG EEEPC_HOTK_FILE ": "
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#define EEEPC_ERR KERN_ERR EEEPC_LOG
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#define EEEPC_WARNING KERN_WARNING EEEPC_LOG
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#define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG
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#define EEEPC_INFO KERN_INFO EEEPC_LOG
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/*
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* Definitions for Asus EeePC
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*/
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#define NOTIFY_WLAN_ON 0x10
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enum {
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DISABLE_ASL_WLAN = 0x0001,
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DISABLE_ASL_BLUETOOTH = 0x0002,
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DISABLE_ASL_IRDA = 0x0004,
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DISABLE_ASL_CAMERA = 0x0008,
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DISABLE_ASL_TV = 0x0010,
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DISABLE_ASL_GPS = 0x0020,
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DISABLE_ASL_DISPLAYSWITCH = 0x0040,
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DISABLE_ASL_MODEM = 0x0080,
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DISABLE_ASL_CARDREADER = 0x0100
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};
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enum {
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CM_ASL_WLAN = 0,
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CM_ASL_BLUETOOTH,
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CM_ASL_IRDA,
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CM_ASL_1394,
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CM_ASL_CAMERA,
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CM_ASL_TV,
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CM_ASL_GPS,
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CM_ASL_DVDROM,
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CM_ASL_DISPLAYSWITCH,
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CM_ASL_PANELBRIGHT,
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CM_ASL_BIOSFLASH,
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CM_ASL_ACPIFLASH,
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CM_ASL_CPUFV,
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CM_ASL_CPUTEMPERATURE,
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CM_ASL_FANCPU,
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CM_ASL_FANCHASSIS,
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CM_ASL_USBPORT1,
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CM_ASL_USBPORT2,
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CM_ASL_USBPORT3,
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CM_ASL_MODEM,
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CM_ASL_CARDREADER,
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CM_ASL_LID
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};
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const char *cm_getv[] = {
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"WLDG", NULL, NULL, NULL,
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"CAMG", NULL, NULL, NULL,
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NULL, "PBLG", NULL, NULL,
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"CFVG", NULL, NULL, NULL,
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"USBG", NULL, NULL, "MODG",
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"CRDG", "LIDG"
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};
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const char *cm_setv[] = {
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"WLDS", NULL, NULL, NULL,
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"CAMS", NULL, NULL, NULL,
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"SDSP", "PBLS", "HDPS", NULL,
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"CFVS", NULL, NULL, NULL,
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"USBG", NULL, NULL, "MODS",
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"CRDS", NULL
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};
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/*
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* This is the main structure, we can use it to store useful information
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* about the hotk device
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*/
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struct eeepc_hotk {
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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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u32 cm_supported; /* the control methods supported
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by this BIOS */
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uint init_flag; /* Init flags */
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u16 event_count[128]; /* count for each event */
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};
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/* The actual device the driver binds to */
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static struct eeepc_hotk *ehotk;
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/* Platform device/driver */
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static struct platform_driver platform_driver = {
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.driver = {
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.name = EEEPC_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 *platform_device;
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/*
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* The hotkey driver declaration
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*/
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static int eeepc_hotk_add(struct acpi_device *device);
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static int eeepc_hotk_remove(struct acpi_device *device, int type);
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static const struct acpi_device_id eeepc_device_ids[] = {
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{EEEPC_HOTK_HID, 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
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static struct acpi_driver eeepc_hotk_driver = {
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.name = EEEPC_HOTK_NAME,
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.class = EEEPC_HOTK_CLASS,
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.ids = eeepc_device_ids,
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.ops = {
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.add = eeepc_hotk_add,
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.remove = eeepc_hotk_remove,
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},
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};
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MODULE_AUTHOR("Corentin Chary, Eric Cooper");
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MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
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MODULE_LICENSE("GPL");
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/*
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* ACPI Helpers
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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;
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union acpi_object in_obj;
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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 ? 0 : -1);
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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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{
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acpi_status status;
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ulong result;
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status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
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if (ACPI_FAILURE(status)) {
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*val = -1;
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return -1;
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} else {
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*val = result;
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return 0;
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}
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}
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static int set_acpi(int cm, int value)
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{
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if (ehotk->cm_supported & (0x1 << cm)) {
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const char *method = cm_setv[cm];
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if (method == NULL)
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return -ENODEV;
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if (write_acpi_int(ehotk->handle, method, value, NULL))
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printk(EEEPC_WARNING "Error writing %s\n", method);
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}
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return 0;
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}
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static int get_acpi(int cm)
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{
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int value = -1;
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if ((ehotk->cm_supported & (0x1 << cm))) {
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const char *method = cm_getv[cm];
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if (method == NULL)
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return -ENODEV;
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if (read_acpi_int(ehotk->handle, method, &value))
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printk(EEEPC_WARNING "Error reading %s\n", method);
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}
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return value;
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}
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/*
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* Sys helpers
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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 (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 ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
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{
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int rv, value;
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rv = parse_arg(buf, count, &value);
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if (rv > 0)
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set_acpi(cm, value);
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return rv;
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}
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static ssize_t show_sys_acpi(int cm, char *buf)
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{
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return sprintf(buf, "%d\n", get_acpi(cm));
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}
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#define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
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static ssize_t show_##_name(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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return show_sys_acpi(_cm, buf); \
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} \
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static ssize_t store_##_name(struct device *dev, \
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struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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return store_sys_acpi(_cm, buf, count); \
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} \
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static struct device_attribute dev_attr_##_name = { \
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.attr = { \
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.name = __stringify(_name), \
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.mode = 0644 }, \
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.show = show_##_name, \
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.store = store_##_name, \
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}
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EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
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EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
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EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
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EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN);
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static struct attribute *platform_attributes[] = {
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&dev_attr_camera.attr,
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&dev_attr_cardr.attr,
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&dev_attr_disp.attr,
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&dev_attr_wlan.attr,
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NULL
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};
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static struct attribute_group platform_attribute_group = {
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.attrs = platform_attributes
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};
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/*
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* Hotkey functions
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*/
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static int eeepc_hotk_check(void)
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{
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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int result;
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result = acpi_bus_get_status(ehotk->device);
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if (result)
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return result;
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if (ehotk->device->status.present) {
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if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
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&buffer)) {
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printk(EEEPC_ERR "Hotkey initialization failed\n");
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return -ENODEV;
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} else {
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printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
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ehotk->init_flag);
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}
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/* get control methods supported */
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if (read_acpi_int(ehotk->handle, "CMSG"
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, &ehotk->cm_supported)) {
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printk(EEEPC_ERR
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"Get control methods supported failed\n");
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return -ENODEV;
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} else {
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printk(EEEPC_INFO
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"Get control methods supported: 0x%x\n",
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ehotk->cm_supported);
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}
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} else {
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printk(EEEPC_ERR "Hotkey device not present, aborting\n");
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return -EINVAL;
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}
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return 0;
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}
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static void notify_wlan(u32 *event)
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{
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/* if DISABLE_ASL_WLAN is set, the notify code for fn+f2
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will always be 0x10 */
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if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) {
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const char *method = cm_getv[CM_ASL_WLAN];
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int value;
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if (read_acpi_int(ehotk->handle, method, &value))
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printk(EEEPC_WARNING "Error reading %s\n",
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method);
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else if (value == 1)
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*event = 0x11;
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}
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}
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static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
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{
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if (!ehotk)
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return;
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if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & ehotk->init_flag))
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notify_wlan(&event);
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acpi_bus_generate_proc_event(ehotk->device, event,
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ehotk->event_count[event % 128]++);
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}
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static int eeepc_hotk_add(struct acpi_device *device)
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{
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acpi_status status = AE_OK;
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int result;
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if (!device)
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return -EINVAL;
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printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
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ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
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if (!ehotk)
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return -ENOMEM;
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ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
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ehotk->handle = device->handle;
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strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
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strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
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acpi_driver_data(device) = ehotk;
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ehotk->device = device;
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result = eeepc_hotk_check();
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if (result)
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goto end;
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status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
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eeepc_hotk_notify, ehotk);
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if (ACPI_FAILURE(status))
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printk(EEEPC_ERR "Error installing notify handler\n");
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end:
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if (result) {
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kfree(ehotk);
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ehotk = NULL;
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}
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return result;
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}
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static int eeepc_hotk_remove(struct acpi_device *device, int type)
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{
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acpi_status status = 0;
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if (!device || !acpi_driver_data(device))
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return -EINVAL;
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status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
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eeepc_hotk_notify);
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if (ACPI_FAILURE(status))
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printk(EEEPC_ERR "Error removing notify handler\n");
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kfree(ehotk);
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return 0;
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}
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/*
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* exit/init
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*/
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static void __exit eeepc_laptop_exit(void)
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{
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acpi_bus_unregister_driver(&eeepc_hotk_driver);
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sysfs_remove_group(&platform_device->dev.kobj,
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&platform_attribute_group);
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platform_device_unregister(platform_device);
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platform_driver_unregister(&platform_driver);
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}
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static int __init eeepc_laptop_init(void)
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{
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struct device *dev;
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int result;
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if (acpi_disabled)
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return -ENODEV;
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result = acpi_bus_register_driver(&eeepc_hotk_driver);
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if (result < 0)
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return result;
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if (!ehotk) {
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acpi_bus_unregister_driver(&eeepc_hotk_driver);
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return -ENODEV;
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}
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dev = acpi_get_physical_device(ehotk->device->handle);
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/* Register platform stuff */
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result = platform_driver_register(&platform_driver);
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||||
if (result)
|
||||
goto fail_platform_driver;
|
||||
platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
|
||||
if (!platform_device) {
|
||||
result = -ENOMEM;
|
||||
goto fail_platform_device1;
|
||||
}
|
||||
result = platform_device_add(platform_device);
|
||||
if (result)
|
||||
goto fail_platform_device2;
|
||||
result = sysfs_create_group(&platform_device->dev.kobj,
|
||||
&platform_attribute_group);
|
||||
if (result)
|
||||
goto fail_sysfs;
|
||||
return 0;
|
||||
fail_sysfs:
|
||||
platform_device_del(platform_device);
|
||||
fail_platform_device2:
|
||||
platform_device_put(platform_device);
|
||||
fail_platform_device1:
|
||||
platform_driver_unregister(&platform_driver);
|
||||
fail_platform_driver:
|
||||
return result;
|
||||
}
|
||||
|
||||
module_init(eeepc_laptop_init);
|
||||
module_exit(eeepc_laptop_exit);
|
||||
Reference in New Issue