eeepc-laptop: add base driver (e59f8796) · Commits · e / devices / android_kernel_teracube_mt6765

MAINTAINERS

+7 −0

Original line number	Diff line number	Diff line
		@@ -1531,6 +1531,13 @@ L: bluesmoke-devel@lists.sourceforge.net
		W: bluesmoke.sourceforge.net
		S: Maintained

		EEEPC LAPTOP EXTRAS DRIVER
		P: Corentin Chary
		M: corentincj@iksaif.net
		L: acpi4asus-user@lists.sourceforge.net
		W: http://sourceforge.net/projects/acpi4asus
		S: Maintained

		EEPRO100 NETWORK DRIVER
		P: Andrey V. Savochkin
		M: saw@saw.sw.com.sg

drivers/misc/Kconfig

+11 −0

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		@@ -351,6 +351,17 @@ config INTEL_MENLOW

		If unsure, say N.

		config EEEPC_LAPTOP
		tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
		depends on X86
		depends on ACPI
		depends on EXPERIMENTAL
		---help---
		This driver supports the Fn-Fx keys on Eee PC laptops.
		It also adds the ability to switch camera/wlan on/off.

		If you have an Eee PC laptop, say Y or M here.

		config ENCLOSURE_SERVICES
		tristate "Enclosure Services"
		default n

drivers/misc/Makefile

+2 −1

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		@@ -8,6 +8,7 @@ obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
		obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
		obj-$(CONFIG_ACER_WMI) += acer-wmi.o
		obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o
		obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
		obj-$(CONFIG_ATMEL_PWM) += atmel_pwm.o
		obj-$(CONFIG_ATMEL_SSC) += atmel-ssc.o
		obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o

drivers/misc/eeepc-laptop.c

0 → 100644

+442 −0

Original line number	Diff line number	Diff line
		/*
		* 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 <acpi/acpi_drivers.h>
		#include <acpi/acpi_bus.h>
		#include <linux/uaccess.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

		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
		};

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

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

		/*
		* 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 */
		};

		/* 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;

		/*
		* 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},
		{"", 0},
		};
		MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);

		static struct acpi_driver eeepc_hotk_driver = {
		.name = EEEPC_HOTK_NAME,
		.class = EEEPC_HOTK_CLASS,
		.ids = eeepc_device_ids,
		.ops = {
		.add = eeepc_hotk_add,
		.remove = eeepc_hotk_remove,
		},
		};

		MODULE_AUTHOR("Corentin Chary, Eric Cooper");
		MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
		MODULE_LICENSE("GPL");

		/*
		* ACPI Helpers
		*/
		static int write_acpi_int(acpi_handle handle, const char *method, int val,
		struct acpi_buffer *output)
		{
		struct acpi_object_list params;
		union acpi_object in_obj;
		acpi_status status;

		params.count = 1;
		params.pointer = &in_obj;
		in_obj.type = ACPI_TYPE_INTEGER;
		in_obj.integer.value = val;

		status = acpi_evaluate_object(handle, (char *)method, &params, output);
		return (status == AE_OK ? 0 : -1);
		}

		static int read_acpi_int(acpi_handle handle, const char method, int val)
		{
		acpi_status status;
		ulong result;

		status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
		if (ACPI_FAILURE(status)) {
		*val = -1;
		return -1;
		} else {
		*val = result;
		return 0;
		}
		}

		static int set_acpi(int cm, int value)
		{
		if (ehotk->cm_supported & (0x1 << cm)) {
		const char *method = cm_setv[cm];
		if (method == NULL)
		return -ENODEV;
		if (write_acpi_int(ehotk->handle, method, value, NULL))
		printk(EEEPC_WARNING "Error writing %s\n", method);
		}
		return 0;
		}

		static int get_acpi(int cm)
		{
		int value = -1;
		if ((ehotk->cm_supported & (0x1 << cm))) {
		const char *method = cm_getv[cm];
		if (method == NULL)
		return -ENODEV;
		if (read_acpi_int(ehotk->handle, method, &value))
		printk(EEEPC_WARNING "Error reading %s\n", method);
		}
		return value;
		}

		/*
		* Sys helpers
		*/
		static int parse_arg(const char buf, unsigned long count, int val)
		{
		if (!count)
		return 0;
		if (sscanf(buf, "%i", val) != 1)
		return -EINVAL;
		return count;
		}

		static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
		{
		int rv, value;

		rv = parse_arg(buf, count, &value);
		if (rv > 0)
		set_acpi(cm, value);
		return rv;
		}

		static ssize_t show_sys_acpi(int cm, char *buf)
		{
		return sprintf(buf, "%d\n", get_acpi(cm));
		}

		#define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
		static ssize_t show_##_name(struct device *dev, \
		struct device_attribute *attr, \
		char *buf) \
		{ \
		return show_sys_acpi(_cm, buf); \
		} \
		static ssize_t store_##_name(struct device *dev, \
		struct device_attribute *attr, \
		const char *buf, size_t count) \
		{ \
		return store_sys_acpi(_cm, buf, count); \
		} \
		static struct device_attribute dev_attr_##_name = { \
		.attr = { \
		.name = __stringify(_name), \
		.mode = 0644 }, \
		.show = show_##_name, \
		.store = store_##_name, \
		}

		EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
		EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
		EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
		EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN);

		static struct attribute *platform_attributes[] = {
		&dev_attr_camera.attr,
		&dev_attr_cardr.attr,
		&dev_attr_disp.attr,
		&dev_attr_wlan.attr,
		NULL
		};

		static struct attribute_group platform_attribute_group = {
		.attrs = platform_attributes
		};

		/*
		* Hotkey functions
		*/
		static int eeepc_hotk_check(void)
		{
		struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
		int result;

		result = acpi_bus_get_status(ehotk->device);
		if (result)
		return result;
		if (ehotk->device->status.present) {
		if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
		&buffer)) {
		printk(EEEPC_ERR "Hotkey initialization failed\n");
		return -ENODEV;
		} else {
		printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
		ehotk->init_flag);
		}
		/* get control methods supported */
		if (read_acpi_int(ehotk->handle, "CMSG"
		, &ehotk->cm_supported)) {
		printk(EEEPC_ERR
		"Get control methods supported failed\n");
		return -ENODEV;
		} else {
		printk(EEEPC_INFO
		"Get control methods supported: 0x%x\n",
		ehotk->cm_supported);
		}
		} else {
		printk(EEEPC_ERR "Hotkey device not present, aborting\n");
		return -EINVAL;
		}
		return 0;
		}

		static void notify_wlan(u32 *event)
		{
		/* if DISABLE_ASL_WLAN is set, the notify code for fn+f2
		will always be 0x10 */
		if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) {
		const char *method = cm_getv[CM_ASL_WLAN];
		int value;
		if (read_acpi_int(ehotk->handle, method, &value))
		printk(EEEPC_WARNING "Error reading %s\n",
		method);
		else if (value == 1)
		*event = 0x11;
		}
		}

		static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
		{
		if (!ehotk)
		return;
		if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & ehotk->init_flag))
		notify_wlan(&event);
		acpi_bus_generate_proc_event(ehotk->device, event,
		ehotk->event_count[event % 128]++);
		}

		static int eeepc_hotk_add(struct acpi_device *device)
		{
		acpi_status status = AE_OK;
		int result;

		if (!device)
		return -EINVAL;
		printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
		ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
		if (!ehotk)
		return -ENOMEM;
		ehotk->init_flag = DISABLE_ASL_WLAN \| DISABLE_ASL_DISPLAYSWITCH;
		ehotk->handle = device->handle;
		strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
		strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
		acpi_driver_data(device) = ehotk;
		ehotk->device = device;
		result = eeepc_hotk_check();
		if (result)
		goto end;
		status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
		eeepc_hotk_notify, ehotk);
		if (ACPI_FAILURE(status))
		printk(EEEPC_ERR "Error installing notify handler\n");
		end:
		if (result) {
		kfree(ehotk);
		ehotk = NULL;
		}
		return result;
		}

		static int eeepc_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(ehotk->handle, ACPI_SYSTEM_NOTIFY,
		eeepc_hotk_notify);
		if (ACPI_FAILURE(status))
		printk(EEEPC_ERR "Error removing notify handler\n");
		kfree(ehotk);
		return 0;
		}

		/*
		* exit/init
		*/
		static void __exit eeepc_laptop_exit(void)
		{
		acpi_bus_unregister_driver(&eeepc_hotk_driver);
		sysfs_remove_group(&platform_device->dev.kobj,
		&platform_attribute_group);
		platform_device_unregister(platform_device);
		platform_driver_unregister(&platform_driver);
		}

		static int __init eeepc_laptop_init(void)
		{
		struct device *dev;
		int result;

		if (acpi_disabled)
		return -ENODEV;
		result = acpi_bus_register_driver(&eeepc_hotk_driver);
		if (result < 0)
		return result;
		if (!ehotk) {
		acpi_bus_unregister_driver(&eeepc_hotk_driver);
		return -ENODEV;
		}
		dev = acpi_get_physical_device(ehotk->device->handle);
		/* Register platform stuff */
		result = platform_driver_register(&platform_driver);
		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);