path: root/drivers/platform/x86/eeepc-laptop.c

/*
 *  eepc-laptop.c - Asus Eee PC extras
 *
 *  Based on asus_acpi.c as patched for the Eee PC by Asus:
 *  ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
 *  Based on eee.c from eeepc-linux
 *
 *  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.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/backlight.h>
#include <linux/fb.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <linux/uaccess.h>
#include <linux/input.h>
#include <linux/rfkill.h>
#include <linux/pci.h>

#define EEEPC_LAPTOP_VERSION	"0.1"

#define EEEPC_HOTK_NAME		"Eee PC Hotkey Driver"
#define EEEPC_HOTK_FILE		"eeepc"
#define EEEPC_HOTK_CLASS	"hotkey"
#define EEEPC_HOTK_DEVICE_NAME	"Hotkey"
#define EEEPC_HOTK_HID		"ASUS010"

#define EEEPC_LOG	EEEPC_HOTK_FILE ": "
#define EEEPC_ERR	KERN_ERR	EEEPC_LOG
#define EEEPC_WARNING	KERN_WARNING	EEEPC_LOG
#define EEEPC_NOTICE	KERN_NOTICE	EEEPC_LOG
#define EEEPC_INFO	KERN_INFO	EEEPC_LOG

/*
 * Definitions for Asus EeePC
 */
#define	NOTIFY_WLAN_ON	0x10
#define NOTIFY_BRN_MIN	0x20
#define NOTIFY_BRN_MAX	0x2f

enum {
	DISABLE_ASL_WLAN = 0x0001,
	DISABLE_ASL_BLUETOOTH = 0x0002,
	DISABLE_ASL_IRDA = 0x0004,
	DISABLE_ASL_CAMERA = 0x0008,
	DISABLE_ASL_TV = 0x0010,
	DISABLE_ASL_GPS = 0x0020,
	DISABLE_ASL_DISPLAYSWITCH = 0x0040,
	DISABLE_ASL_MODEM = 0x0080,
	DISABLE_ASL_CARDREADER = 0x0100
};

enum {
	CM_ASL_WLAN = 0,
	CM_ASL_BLUETOOTH,
	CM_ASL_IRDA,
	CM_ASL_1394,
	CM_ASL_CAMERA,
	CM_ASL_TV,
	CM_ASL_GPS,
	CM_ASL_DVDROM,
	CM_ASL_DISPLAYSWITCH,
	CM_ASL_PANELBRIGHT,
	CM_ASL_BIOSFLASH,
	CM_ASL_ACPIFLASH,
	CM_ASL_CPUFV,
	CM_ASL_CPUTEMPERATURE,
	CM_ASL_FANCPU,
	CM_ASL_FANCHASSIS,
	CM_ASL_USBPORT1,
	CM_ASL_USBPORT2,
	CM_ASL_USBPORT3,
	CM_ASL_MODEM,
	CM_ASL_CARDREADER,
	CM_ASL_LID
};

static const char *cm_getv[] = {
	"WLDG", "BTHG", NULL, NULL,
	"CAMG", NULL, NULL, NULL,
	NULL, "PBLG", NULL, NULL,
	"CFVG", NULL, NULL, NULL,
	"USBG", NULL, NULL, "MODG",
	"CRDG", "LIDG"
};

static const char *cm_setv[] = {
	"WLDS", "BTHS", NULL, NULL,
	"CAMS", NULL, NULL, NULL,
	"SDSP", "PBLS", "HDPS", NULL,
	"CFVS", NULL, NULL, NULL,
	"USBG", NULL, NULL, "MODS",
	"CRDS", NULL
};

#define EEEPC_EC	"\\_SB.PCI0.SBRG.EC0."

#define EEEPC_EC_FAN_PWM	EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
#define EEEPC_EC_SC02		0x63
#define EEEPC_EC_FAN_HRPM	EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
#define EEEPC_EC_FAN_LRPM	EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
#define EEEPC_EC_FAN_CTRL	EEEPC_EC "SFB3" /* Byte containing SF25  */
#define EEEPC_EC_SFB3		0xD3

/*
 * This is the main structure, we can use it to store useful information
 * about the hotk device
 */
struct eeepc_hotk {
	struct acpi_device *device;	/* the device we are in */
	acpi_handle handle;		/* the handle of the hotk device */
	u32 cm_supported;		/* the control methods supported
					   by this BIOS */
	uint init_flag;			/* Init flags */
	u16 event_count[128];		/* count for each event */
	struct input_dev *inputdev;
	u16 *keycode_map;
	struct rfkill *eeepc_wlan_rfkill;
	struct rfkill *eeepc_bluetooth_rfkill;
};

/* The actual device the driver binds to */
static struct eeepc_hotk *ehotk;

/* Platform device/driver */
static struct platform_driver platform_driver = {
	.driver = {
		.name = EEEPC_HOTK_FILE,
		.owner = THIS_MODULE,
	}
};

static struct platform_device *platform_device;

struct key_entry {
	char type;
	u8 code;
	u16 keycode;
};

enum { KE_KEY, KE_END };

static struct key_entry eeepc_keymap[] = {
	/* Sleep already handled via generic ACPI code */
	{KE_KEY, 0x10, KEY_WLAN },
	{KE_KEY, 0x12, KEY_PROG1 },
	{KE_KEY, 0x13, KEY_MUTE },
	{KE_KEY, 0x14, KEY_VOLUMEDOWN },
	{KE_KEY, 0x15, KEY_VOLUMEUP },
	{KE_KEY, 0x1a, KEY_COFFEE },
	{KE_KEY, 0x1b, KEY_ZOOM },
	{KE_KEY, 0x1c, KEY_PROG2 },
	{KE_KEY, 0x1d, KEY_PROG3 },
	{KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
	{KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
	{KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
	{KE_END, 0},
};

/*
 * The hotkey driver declaration
 */
static int eeepc_hotk_add(struct acpi_device *device);
static int eeepc_hotk_remove(struct acpi_device *device, int type);

static const struct acpi_device_id eeepc_device_ids[] = {
	{EEEPC_HOTK_HID, 0},
	{"