--- /dev/null
+/*
+ * Asus PC WMI hotkey driver
+ *
+ * Copyright(C) 2010 Intel Corporation.
+ * Copyright(C) 2010-2011 Corentin Chary <corentin.chary@gmail.com>
+ *
+ * Portions based on wistron_btns.c:
+ * Copyright (C) 2005 Miloslav Trmac <mitr@volny.cz>
+ * Copyright (C) 2005 Bernhard Rosenkraenzer <bero@arklinux.org>
+ * Copyright (C) 2005 Dmitry Torokhov <dtor@mail.ru>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/rfkill.h>
+#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/platform_device.h>
+#include <linux/thermal.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+#include <acpi/video.h>
+
+#include "asus-wmi.h"
+
+MODULE_AUTHOR("Corentin Chary <corentin.chary@gmail.com>, "
+ "Yong Wang <yong.y.wang@intel.com>");
+MODULE_DESCRIPTION("Asus Generic WMI Driver");
+MODULE_LICENSE("GPL");
+
+#define to_platform_driver(drv) \
+ (container_of((drv), struct platform_driver, driver))
+
+#define to_asus_wmi_driver(pdrv) \
+ (container_of((pdrv), struct asus_wmi_driver, platform_driver))
+
+#define ASUS_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
+
+#define NOTIFY_BRNUP_MIN 0x11
+#define NOTIFY_BRNUP_MAX 0x1f
+#define NOTIFY_BRNDOWN_MIN 0x20
+#define NOTIFY_BRNDOWN_MAX 0x2e
+#define NOTIFY_KBD_BRTUP 0xc4
+#define NOTIFY_KBD_BRTDWN 0xc5
+
+/* WMI Methods */
+#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
+#define ASUS_WMI_METHODID_SFBD 0x44424653 /* Set First Boot Device */
+#define ASUS_WMI_METHODID_GLCD 0x44434C47 /* Get LCD status */
+#define ASUS_WMI_METHODID_GPID 0x44495047 /* Get Panel ID?? (Resol) */
+#define ASUS_WMI_METHODID_QMOD 0x444F4D51 /* Quiet MODe */
+#define ASUS_WMI_METHODID_SPLV 0x4C425053 /* Set Panel Light Value */
+#define ASUS_WMI_METHODID_SFUN 0x4E554653 /* FUNCtionalities */
+#define ASUS_WMI_METHODID_SDSP 0x50534453 /* Set DiSPlay output */
+#define ASUS_WMI_METHODID_GDSP 0x50534447 /* Get DiSPlay output */
+#define ASUS_WMI_METHODID_DEVP 0x50564544 /* DEVice Policy */
+#define ASUS_WMI_METHODID_OSVR 0x5256534F /* OS VeRsion */
+#define ASUS_WMI_METHODID_DSTS 0x53544344 /* Device STatuS */
+#define ASUS_WMI_METHODID_DSTS2 0x53545344 /* Device STatuS #2*/
+#define ASUS_WMI_METHODID_BSTS 0x53545342 /* Bios STatuS ? */
+#define ASUS_WMI_METHODID_DEVS 0x53564544 /* DEVice Set */
+#define ASUS_WMI_METHODID_CFVS 0x53564643 /* CPU Frequency Volt Set */
+#define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */
+#define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */
+#define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */
+
+#define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE
+
+/* Wireless */
+#define ASUS_WMI_DEVID_HW_SWITCH 0x00010001
+#define ASUS_WMI_DEVID_WIRELESS_LED 0x00010002
+#define ASUS_WMI_DEVID_CWAP 0x00010003
+#define ASUS_WMI_DEVID_WLAN 0x00010011
+#define ASUS_WMI_DEVID_WLAN_LED 0x00010012
+#define ASUS_WMI_DEVID_BLUETOOTH 0x00010013
+#define ASUS_WMI_DEVID_GPS 0x00010015
+#define ASUS_WMI_DEVID_WIMAX 0x00010017
+#define ASUS_WMI_DEVID_WWAN3G 0x00010019
+#define ASUS_WMI_DEVID_UWB 0x00010021
+
+/* Leds */
+/* 0x000200XX and 0x000400XX */
+#define ASUS_WMI_DEVID_LED1 0x00020011
+#define ASUS_WMI_DEVID_LED2 0x00020012
+#define ASUS_WMI_DEVID_LED3 0x00020013
+#define ASUS_WMI_DEVID_LED4 0x00020014
+#define ASUS_WMI_DEVID_LED5 0x00020015
+#define ASUS_WMI_DEVID_LED6 0x00020016
+
+/* Backlight and Brightness */
+#define ASUS_WMI_DEVID_BACKLIGHT 0x00050011
+#define ASUS_WMI_DEVID_BRIGHTNESS 0x00050012
+#define ASUS_WMI_DEVID_KBD_BACKLIGHT 0x00050021
+#define ASUS_WMI_DEVID_LIGHT_SENSOR 0x00050022 /* ?? */
+
+/* Misc */
+#define ASUS_WMI_DEVID_CAMERA 0x00060013
+
+/* Storage */
+#define ASUS_WMI_DEVID_CARDREADER 0x00080013
+
+/* Input */
+#define ASUS_WMI_DEVID_TOUCHPAD 0x00100011
+#define ASUS_WMI_DEVID_TOUCHPAD_LED 0x00100012
+
+/* Fan, Thermal */
+#define ASUS_WMI_DEVID_THERMAL_CTRL 0x00110011
+#define ASUS_WMI_DEVID_FAN_CTRL 0x00110012
+
+/* Power */
+#define ASUS_WMI_DEVID_PROCESSOR_STATE 0x00120012
+
+/* Deep S3 / Resume on LID open */
+#define ASUS_WMI_DEVID_LID_RESUME 0x00120031
+
+/* DSTS masks */
+#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
+#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002
+#define ASUS_WMI_DSTS_PRESENCE_BIT 0x00010000
+#define ASUS_WMI_DSTS_USER_BIT 0x00020000
+#define ASUS_WMI_DSTS_BIOS_BIT 0x00040000
+#define ASUS_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF
+#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00
+
+struct bios_args {
+ u32 arg0;
+ u32 arg1;
+} __packed;
+
+/*
+ * <platform>/ - debugfs root directory
+ * dev_id - current dev_id
+ * ctrl_param - current ctrl_param
+ * method_id - current method_id
+ * devs - call DEVS(dev_id, ctrl_param) and print result
+ * dsts - call DSTS(dev_id) and print result
+ * call - call method_id(dev_id, ctrl_param) and print result
+ */
+struct asus_wmi_debug {
+ struct dentry *root;
+ u32 method_id;
+ u32 dev_id;
+ u32 ctrl_param;
+};
+
+struct asus_rfkill {
+ struct asus_wmi *asus;
+ struct rfkill *rfkill;
+ u32 dev_id;
+};
+
+struct asus_wmi {
+ int dsts_id;
+ int spec;
+ int sfun;
+
+ struct input_dev *inputdev;
+ struct backlight_device *backlight_device;
+ struct platform_device *platform_device;
+
+ struct led_classdev wlan_led;
+ int wlan_led_wk;
+ struct led_classdev tpd_led;
+ int tpd_led_wk;
+ struct led_classdev kbd_led;
+ int kbd_led_wk;
+ struct workqueue_struct *led_workqueue;
+ struct work_struct tpd_led_work;
+ struct work_struct kbd_led_work;
+ struct work_struct wlan_led_work;
+
+ struct asus_rfkill wlan;
+ struct asus_rfkill bluetooth;
+ struct asus_rfkill wimax;
+ struct asus_rfkill wwan3g;
+ struct asus_rfkill gps;
+ struct asus_rfkill uwb;
+
+ struct hotplug_slot *hotplug_slot;
+ struct mutex hotplug_lock;
+ struct mutex wmi_lock;
+ struct workqueue_struct *hotplug_workqueue;
+ struct work_struct hotplug_work;
+
+ struct asus_wmi_debug debug;
+
+ struct asus_wmi_driver *driver;
+};
+
+static int asus_wmi_input_init(struct asus_wmi *asus)
+{
+ int err;
+
+ asus->inputdev = input_allocate_device();
+ if (!asus->inputdev)
+ return -ENOMEM;
+
+ asus->inputdev->name = asus->driver->input_name;
+ asus->inputdev->phys = asus->driver->input_phys;
+ asus->inputdev->id.bustype = BUS_HOST;
+ asus->inputdev->dev.parent = &asus->platform_device->dev;
+ set_bit(EV_REP, asus->inputdev->evbit);
+
+ err = sparse_keymap_setup(asus->inputdev, asus->driver->keymap, NULL);
+ if (err)
+ goto err_free_dev;
+
+ err = input_register_device(asus->inputdev);
+ if (err)
+ goto err_free_keymap;
+
+ return 0;
+
+err_free_keymap:
+ sparse_keymap_free(asus->inputdev);
+err_free_dev:
+ input_free_device(asus->inputdev);
+ return err;
+}
+
+static void asus_wmi_input_exit(struct asus_wmi *asus)
+{
+ if (asus->inputdev) {
+ sparse_keymap_free(asus->inputdev);
+ input_unregister_device(asus->inputdev);
+ }
+
+ asus->inputdev = NULL;
+}
+
+static int asus_wmi_evaluate_method(u32 method_id, u32 arg0, u32 arg1,
+ u32 *retval)
+{
+ struct bios_args args = {
+ .arg0 = arg0,
+ .arg1 = arg1,
+ };
+ struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+ union acpi_object *obj;
+ u32 tmp = 0;
+
+ status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, 1, method_id,
+ &input, &output);
+
+ if (ACPI_FAILURE(status))
+ goto exit;
+
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ tmp = (u32) obj->integer.value;
+
+ if (retval)
+ *retval = tmp;
+
+ kfree(obj);
+
+exit:
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ if (tmp == ASUS_WMI_UNSUPPORTED_METHOD)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int asus_wmi_get_devstate(struct asus_wmi *asus, u32 dev_id, u32 *retval)
+{
+ return asus_wmi_evaluate_method(asus->dsts_id, dev_id, 0, retval);
+}
+
+static int asus_wmi_set_devstate(u32 dev_id, u32 ctrl_param,
+ u32 *retval)
+{
+ return asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, dev_id,
+ ctrl_param, retval);
+}
+
+/* Helper for special devices with magic return codes */
+static int asus_wmi_get_devstate_bits(struct asus_wmi *asus,
+ u32 dev_id, u32 mask)
+{
+ u32 retval = 0;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, dev_id, &retval);
+
+ if (err < 0)
+ return err;
+
+ if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))
+ return -ENODEV;
+
+ if (mask == ASUS_WMI_DSTS_STATUS_BIT) {
+ if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)
+ return -ENODEV;
+ }
+
+ return retval & mask;
+}
+
+static int asus_wmi_get_devstate_simple(struct asus_wmi *asus, u32 dev_id)
+{
+ return asus_wmi_get_devstate_bits(asus, dev_id,
+ ASUS_WMI_DSTS_STATUS_BIT);
+}
+
+/*
+ * LEDs
+ */
+/*
+ * These functions actually update the LED's, and are called from a
+ * workqueue. By doing this as separate work rather than when the LED
+ * subsystem asks, we avoid messing with the Asus ACPI stuff during a
+ * potentially bad time, such as a timer interrupt.
+ */
+static void tpd_led_update(struct work_struct *work)
+{
+ int ctrl_param;
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, tpd_led_work);
+
+ ctrl_param = asus->tpd_led_wk;
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL);
+}
+
+static void tpd_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, tpd_led);
+
+ asus->tpd_led_wk = !!value;
+ queue_work(asus->led_workqueue, &asus->tpd_led_work);
+}
+
+static int read_tpd_led_state(struct asus_wmi *asus)
+{
+ return asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_TOUCHPAD_LED);
+}
+
+static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, tpd_led);
+
+ return read_tpd_led_state(asus);
+}
+
+static void kbd_led_update(struct work_struct *work)
+{
+ int ctrl_param = 0;
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, kbd_led_work);
+
+ /*
+ * bits 0-2: level
+ * bit 7: light on/off
+ */
+ if (asus->kbd_led_wk > 0)
+ ctrl_param = 0x80 | (asus->kbd_led_wk & 0x7F);
+
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_KBD_BACKLIGHT, ctrl_param, NULL);
+}
+
+static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
+{
+ int retval;
+
+ /*
+ * bits 0-2: level
+ * bit 7: light on/off
+ * bit 8-10: environment (0: dark, 1: normal, 2: light)
+ * bit 17: status unknown
+ */
+ retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
+ 0xFFFF);
+
+ /* Unknown status is considered as off */
+ if (retval == 0x8000)
+ retval = 0;
+
+ if (retval >= 0) {
+ if (level)
+ *level = retval & 0x7F;
+ if (env)
+ *env = (retval >> 8) & 0x7F;
+ retval = 0;
+ }
+
+ return retval;
+}
+
+static void kbd_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, kbd_led);
+
+ if (value > asus->kbd_led.max_brightness)
+ value = asus->kbd_led.max_brightness;
+ else if (value < 0)
+ value = 0;
+
+ asus->kbd_led_wk = value;
+ queue_work(asus->led_workqueue, &asus->kbd_led_work);
+}
+
+static enum led_brightness kbd_led_get(struct led_classdev *led_cdev)
+{
+ struct asus_wmi *asus;
+ int retval, value;
+
+ asus = container_of(led_cdev, struct asus_wmi, kbd_led);
+
+ retval = kbd_led_read(asus, &value, NULL);
+
+ if (retval < 0)
+ return retval;
+
+ return value;
+}
+
+static int wlan_led_unknown_state(struct asus_wmi *asus)
+{
+ u32 result;
+
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
+
+ return result & ASUS_WMI_DSTS_UNKNOWN_BIT;
+}
+
+static int wlan_led_presence(struct asus_wmi *asus)
+{
+ u32 result;
+
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
+
+ return result & ASUS_WMI_DSTS_PRESENCE_BIT;
+}
+
+static void wlan_led_update(struct work_struct *work)
+{
+ int ctrl_param;
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, wlan_led_work);
+
+ ctrl_param = asus->wlan_led_wk;
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_WIRELESS_LED, ctrl_param, NULL);
+}
+
+static void wlan_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(led_cdev, struct asus_wmi, wlan_led);
+
+ asus->wlan_led_wk = !!value;
+ queue_work(asus->led_workqueue, &asus->wlan_led_work);
+}
+
+static enum led_brightness wlan_led_get(struct led_classdev *led_cdev)
+{
+ struct asus_wmi *asus;
+ u32 result;
+
+ asus = container_of(led_cdev, struct asus_wmi, wlan_led);
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WIRELESS_LED, &result);
+
+ return result & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
+}
+
+static void asus_wmi_led_exit(struct asus_wmi *asus)
+{
+ if (!IS_ERR_OR_NULL(asus->kbd_led.dev))
+ led_classdev_unregister(&asus->kbd_led);
+ if (!IS_ERR_OR_NULL(asus->tpd_led.dev))
+ led_classdev_unregister(&asus->tpd_led);
+ if (!IS_ERR_OR_NULL(asus->wlan_led.dev))
+ led_classdev_unregister(&asus->wlan_led);
+ if (asus->led_workqueue)
+ destroy_workqueue(asus->led_workqueue);
+}
+
+static int asus_wmi_led_init(struct asus_wmi *asus)
+{
+ int rv = 0;
+
+ asus->led_workqueue = create_singlethread_workqueue("led_workqueue");
+ if (!asus->led_workqueue)
+ return -ENOMEM;
+
+ if (read_tpd_led_state(asus) >= 0) {
+ INIT_WORK(&asus->tpd_led_work, tpd_led_update);
+
+ asus->tpd_led.name = "asus::touchpad";
+ asus->tpd_led.brightness_set = tpd_led_set;
+ asus->tpd_led.brightness_get = tpd_led_get;
+ asus->tpd_led.max_brightness = 1;
+
+ rv = led_classdev_register(&asus->platform_device->dev,
+ &asus->tpd_led);
+ if (rv)
+ goto error;
+ }
+
+ if (kbd_led_read(asus, NULL, NULL) >= 0) {
+ INIT_WORK(&asus->kbd_led_work, kbd_led_update);
+
+ asus->kbd_led.name = "asus::kbd_backlight";
+ asus->kbd_led.brightness_set = kbd_led_set;
+ asus->kbd_led.brightness_get = kbd_led_get;
+ asus->kbd_led.max_brightness = 3;
+
+ rv = led_classdev_register(&asus->platform_device->dev,
+ &asus->kbd_led);
+ if (rv)
+ goto error;
+ }
+
+ if (wlan_led_presence(asus) && (asus->driver->quirks->wapf > 0)) {
+ INIT_WORK(&asus->wlan_led_work, wlan_led_update);
+
+ asus->wlan_led.name = "asus::wlan";
+ asus->wlan_led.brightness_set = wlan_led_set;
+ if (!wlan_led_unknown_state(asus))
+ asus->wlan_led.brightness_get = wlan_led_get;
+ asus->wlan_led.flags = LED_CORE_SUSPENDRESUME;
+ asus->wlan_led.max_brightness = 1;
+ asus->wlan_led.default_trigger = "asus-wlan";
+
+ rv = led_classdev_register(&asus->platform_device->dev,
+ &asus->wlan_led);
+ }
+
+error:
+ if (rv)
+ asus_wmi_led_exit(asus);
+
+ return rv;
+}
+
+
+/*
+ * PCI hotplug (for wlan rfkill)
+ */
+static bool asus_wlan_rfkill_blocked(struct asus_wmi *asus)
+{
+ int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
+
+ if (result < 0)
+ return false;
+ return !result;
+}
+
+static void asus_rfkill_hotplug(struct asus_wmi *asus)
+{
+ struct pci_dev *dev;
+ struct pci_bus *bus;
+ bool blocked;
+ bool absent;
+ u32 l;
+
+ mutex_lock(&asus->wmi_lock);
+ blocked = asus_wlan_rfkill_blocked(asus);
+ mutex_unlock(&asus->wmi_lock);
+
+ mutex_lock(&asus->hotplug_lock);
+ pci_lock_rescan_remove();
+
+ if (asus->wlan.rfkill)
+ rfkill_set_sw_state(asus->wlan.rfkill, blocked);
+
+ if (asus->hotplug_slot) {
+ bus = pci_find_bus(0, 1);
+ if (!bus) {
+ pr_warn("Unable to find PCI bus 1?\n");
+ goto out_unlock;
+ }
+
+ if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
+ pr_err("Unable to read PCI config space?\n");
+ goto out_unlock;
+ }
+ absent = (l == 0xffffffff);
+
+ if (blocked != absent) {
+ pr_warn("BIOS says wireless lan is %s, "
+ "but the pci device is %s\n",
+ blocked ? "blocked" : "unblocked",
+ absent ? "absent" : "present");
+ pr_warn("skipped wireless hotplug as probably "
+ "inappropriate for this model\n");
+ goto out_unlock;
+ }
+
+ if (!blocked) {
+ dev = pci_get_slot(bus, 0);
+ if (dev) {
+ /* Device already present */
+ pci_dev_put(dev);
+ goto out_unlock;
+ }
+ dev = pci_scan_single_device(bus, 0);
+ if (dev) {
+ pci_bus_assign_resources(bus);
+ pci_bus_add_device(dev);
+ }
+ } else {
+ dev = pci_get_slot(bus, 0);
+ if (dev) {
+ pci_stop_and_remove_bus_device(dev);
+ pci_dev_put(dev);
+ }
+ }
+ }
+
+out_unlock:
+ pci_unlock_rescan_remove();
+ mutex_unlock(&asus->hotplug_lock);
+}
+
+static void asus_rfkill_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct asus_wmi *asus = data;
+
+ if (event != ACPI_NOTIFY_BUS_CHECK)
+ return;
+
+ /*
+ * We can't call directly asus_rfkill_hotplug because most
+ * of the time WMBC is still being executed and not reetrant.
+ * There is currently no way to tell ACPICA that we want this
+ * method to be serialized, we schedule a asus_rfkill_hotplug
+ * call later, in a safer context.
+ */
+ queue_work(asus->hotplug_workqueue, &asus->hotplug_work);
+}
+
+static int asus_register_rfkill_notifier(struct asus_wmi *asus, char *node)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_install_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ asus_rfkill_notify, asus);
+ if (ACPI_FAILURE(status))
+ pr_warn("Failed to register notify on %s\n", node);
+ } else
+ return -ENODEV;
+
+ return 0;
+}
+
+static void asus_unregister_rfkill_notifier(struct asus_wmi *asus, char *node)
+{
+ acpi_status status = AE_OK;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, node, &handle);
+
+ if (ACPI_SUCCESS(status)) {
+ status = acpi_remove_notify_handler(handle,
+ ACPI_SYSTEM_NOTIFY,
+ asus_rfkill_notify);
+ if (ACPI_FAILURE(status))
+ pr_err("Error removing rfkill notify handler %s\n",
+ node);
+ }
+}
+
+static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
+ u8 *value)
+{
+ struct asus_wmi *asus = hotplug_slot->private;
+ int result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
+
+ if (result < 0)
+ return result;
+
+ *value = !!result;
+ return 0;
+}
+
+static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
+{
+ kfree(hotplug_slot->info);
+ kfree(hotplug_slot);
+}
+
+static struct hotplug_slot_ops asus_hotplug_slot_ops = {
+ .owner = THIS_MODULE,
+ .get_adapter_status = asus_get_adapter_status,
+ .get_power_status = asus_get_adapter_status,
+};
+
+static void asus_hotplug_work(struct work_struct *work)
+{
+ struct asus_wmi *asus;
+
+ asus = container_of(work, struct asus_wmi, hotplug_work);
+ asus_rfkill_hotplug(asus);
+}
+
+static int asus_setup_pci_hotplug(struct asus_wmi *asus)
+{
+ int ret = -ENOMEM;
+ struct pci_bus *bus = pci_find_bus(0, 1);
+
+ if (!bus) {
+ pr_err("Unable to find wifi PCI bus\n");
+ return -ENODEV;
+ }
+
+ asus->hotplug_workqueue =
+ create_singlethread_workqueue("hotplug_workqueue");
+ if (!asus->hotplug_workqueue)
+ goto error_workqueue;
+
+ INIT_WORK(&asus->hotplug_work, asus_hotplug_work);
+
+ asus->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
+ if (!asus->hotplug_slot)
+ goto error_slot;
+
+ asus->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
+ GFP_KERNEL);
+ if (!asus->hotplug_slot->info)
+ goto error_info;
+
+ asus->hotplug_slot->private = asus;
+ asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
+ asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
+ asus_get_adapter_status(asus->hotplug_slot,
+ &asus->hotplug_slot->info->adapter_status);
+
+ ret = pci_hp_register(asus->hotplug_slot, bus, 0, "asus-wifi");
+ if (ret) {
+ pr_err("Unable to register hotplug slot - %d\n", ret);
+ goto error_register;
+ }
+
+ return 0;
+
+error_register:
+ kfree(asus->hotplug_slot->info);
+error_info:
+ kfree(asus->hotplug_slot);
+ asus->hotplug_slot = NULL;
+error_slot:
+ destroy_workqueue(asus->hotplug_workqueue);
+error_workqueue:
+ return ret;
+}
+
+/*
+ * Rfkill devices
+ */
+static int asus_rfkill_set(void *data, bool blocked)
+{
+ struct asus_rfkill *priv = data;
+ u32 ctrl_param = !blocked;
+ u32 dev_id = priv->dev_id;
+
+ /*
+ * If the user bit is set, BIOS can't set and record the wlan status,
+ * it will report the value read from id ASUS_WMI_DEVID_WLAN_LED
+ * while we query the wlan status through WMI(ASUS_WMI_DEVID_WLAN).
+ * So, we have to record wlan status in id ASUS_WMI_DEVID_WLAN_LED
+ * while setting the wlan status through WMI.
+ * This is also the behavior that windows app will do.
+ */
+ if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
+ priv->asus->driver->wlan_ctrl_by_user)
+ dev_id = ASUS_WMI_DEVID_WLAN_LED;
+
+ return asus_wmi_set_devstate(dev_id, ctrl_param, NULL);
+}
+
+static void asus_rfkill_query(struct rfkill *rfkill, void *data)
+{
+ struct asus_rfkill *priv = data;
+ int result;
+
+ result = asus_wmi_get_devstate_simple(priv->asus, priv->dev_id);
+
+ if (result < 0)
+ return;
+
+ rfkill_set_sw_state(priv->rfkill, !result);
+}
+
+static int asus_rfkill_wlan_set(void *data, bool blocked)
+{
+ struct asus_rfkill *priv = data;
+ struct asus_wmi *asus = priv->asus;
+ int ret;
+
+ /*
+ * This handler is enabled only if hotplug is enabled.
+ * In this case, the asus_wmi_set_devstate() will
+ * trigger a wmi notification and we need to wait
+ * this call to finish before being able to call
+ * any wmi method
+ */
+ mutex_lock(&asus->wmi_lock);
+ ret = asus_rfkill_set(data, blocked);
+ mutex_unlock(&asus->wmi_lock);
+ return ret;
+}
+
+static const struct rfkill_ops asus_rfkill_wlan_ops = {
+ .set_block = asus_rfkill_wlan_set,
+ .query = asus_rfkill_query,
+};
+
+static const struct rfkill_ops asus_rfkill_ops = {
+ .set_block = asus_rfkill_set,
+ .query = asus_rfkill_query,
+};
+
+static int asus_new_rfkill(struct asus_wmi *asus,
+ struct asus_rfkill *arfkill,
+ const char *name, enum rfkill_type type, int dev_id)
+{
+ int result = asus_wmi_get_devstate_simple(asus, dev_id);
+ struct rfkill **rfkill = &arfkill->rfkill;
+
+ if (result < 0)
+ return result;
+
+ arfkill->dev_id = dev_id;
+ arfkill->asus = asus;
+
+ if (dev_id == ASUS_WMI_DEVID_WLAN &&
+ asus->driver->quirks->hotplug_wireless)
+ *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
+ &asus_rfkill_wlan_ops, arfkill);
+ else
+ *rfkill = rfkill_alloc(name, &asus->platform_device->dev, type,
+ &asus_rfkill_ops, arfkill);
+
+ if (!*rfkill)
+ return -EINVAL;
+
+ if ((dev_id == ASUS_WMI_DEVID_WLAN) &&
+ (asus->driver->quirks->wapf > 0))
+ rfkill_set_led_trigger_name(*rfkill, "asus-wlan");
+
+ rfkill_init_sw_state(*rfkill, !result);
+ result = rfkill_register(*rfkill);
+ if (result) {
+ rfkill_destroy(*rfkill);
+ *rfkill = NULL;
+ return result;
+ }
+ return 0;
+}
+
+static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
+{
+ asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
+ asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
+ asus_unregister_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
+ if (asus->wlan.rfkill) {
+ rfkill_unregister(asus->wlan.rfkill);
+ rfkill_destroy(asus->wlan.rfkill);
+ asus->wlan.rfkill = NULL;
+ }
+ /*
+ * Refresh pci hotplug in case the rfkill state was changed after
+ * asus_unregister_rfkill_notifier()
+ */
+ asus_rfkill_hotplug(asus);
+ if (asus->hotplug_slot)
+ pci_hp_deregister(asus->hotplug_slot);
+ if (asus->hotplug_workqueue)
+ destroy_workqueue(asus->hotplug_workqueue);
+
+ if (asus->bluetooth.rfkill) {
+ rfkill_unregister(asus->bluetooth.rfkill);
+ rfkill_destroy(asus->bluetooth.rfkill);
+ asus->bluetooth.rfkill = NULL;
+ }
+ if (asus->wimax.rfkill) {
+ rfkill_unregister(asus->wimax.rfkill);
+ rfkill_destroy(asus->wimax.rfkill);
+ asus->wimax.rfkill = NULL;
+ }
+ if (asus->wwan3g.rfkill) {
+ rfkill_unregister(asus->wwan3g.rfkill);
+ rfkill_destroy(asus->wwan3g.rfkill);
+ asus->wwan3g.rfkill = NULL;
+ }
+ if (asus->gps.rfkill) {
+ rfkill_unregister(asus->gps.rfkill);
+ rfkill_destroy(asus->gps.rfkill);
+ asus->gps.rfkill = NULL;
+ }
+ if (asus->uwb.rfkill) {
+ rfkill_unregister(asus->uwb.rfkill);
+ rfkill_destroy(asus->uwb.rfkill);
+ asus->uwb.rfkill = NULL;
+ }
+}
+
+static int asus_wmi_rfkill_init(struct asus_wmi *asus)
+{
+ int result = 0;
+
+ mutex_init(&asus->hotplug_lock);
+ mutex_init(&asus->wmi_lock);
+
+ result = asus_new_rfkill(asus, &asus->wlan, "asus-wlan",
+ RFKILL_TYPE_WLAN, ASUS_WMI_DEVID_WLAN);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->bluetooth,
+ "asus-bluetooth", RFKILL_TYPE_BLUETOOTH,
+ ASUS_WMI_DEVID_BLUETOOTH);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->wimax, "asus-wimax",
+ RFKILL_TYPE_WIMAX, ASUS_WMI_DEVID_WIMAX);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->wwan3g, "asus-wwan3g",
+ RFKILL_TYPE_WWAN, ASUS_WMI_DEVID_WWAN3G);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->gps, "asus-gps",
+ RFKILL_TYPE_GPS, ASUS_WMI_DEVID_GPS);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ result = asus_new_rfkill(asus, &asus->uwb, "asus-uwb",
+ RFKILL_TYPE_UWB, ASUS_WMI_DEVID_UWB);
+
+ if (result && result != -ENODEV)
+ goto exit;
+
+ if (!asus->driver->quirks->hotplug_wireless)
+ goto exit;
+
+ result = asus_setup_pci_hotplug(asus);
+ /*
+ * If we get -EBUSY then something else is handling the PCI hotplug -
+ * don't fail in this case
+ */
+ if (result == -EBUSY)
+ result = 0;
+
+ asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P5");
+ asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P6");
+ asus_register_rfkill_notifier(asus, "\\_SB.PCI0.P0P7");
+ /*
+ * Refresh pci hotplug in case the rfkill state was changed during
+ * setup.
+ */
+ asus_rfkill_hotplug(asus);
+
+exit:
+ if (result && result != -ENODEV)
+ asus_wmi_rfkill_exit(asus);
+
+ if (result == -ENODEV)
+ result = 0;
+
+ return result;
+}
+
+/*
+ * Hwmon device
+ */
+static ssize_t asus_hwmon_pwm1(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+ u32 value;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_FAN_CTRL, &value);
+
+ if (err < 0)
+ return err;
+
+ value &= 0xFF;
+
+ if (value == 1) /* Low Speed */
+ value = 85;
+ else if (value == 2)
+ value = 170;
+ else if (value == 3)
+ value = 255;
+ else if (value != 0) {
+ pr_err("Unknown fan speed %#x\n", value);
+ value = -1;
+ }
+
+ return sprintf(buf, "%d\n", value);
+}
+
+static ssize_t asus_hwmon_temp1(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct asus_wmi *asus = dev_get_drvdata(dev);
+ u32 value;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
+
+ if (err < 0)
+ return err;
+
+ value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
+
+ return sprintf(buf, "%d\n", value);
+}
+
+static DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL);
+static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
+
+static struct attribute *hwmon_attributes[] = {
+ &dev_attr_pwm1.attr,
+ &dev_attr_temp1_input.attr,
+ NULL
+};
+
+static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr, int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct platform_device *pdev = to_platform_device(dev->parent);
+ struct asus_wmi *asus = platform_get_drvdata(pdev);
+ bool ok = true;
+ int dev_id = -1;
+ u32 value = ASUS_WMI_UNSUPPORTED_METHOD;
+
+ if (attr == &dev_attr_pwm1.attr)
+ dev_id = ASUS_WMI_DEVID_FAN_CTRL;
+ else if (attr == &dev_attr_temp1_input.attr)
+ dev_id = ASUS_WMI_DEVID_THERMAL_CTRL;
+
+ if (dev_id != -1) {
+ int err = asus_wmi_get_devstate(asus, dev_id, &value);
+
+ if (err < 0)
+ return 0; /* can't return negative here */
+ }
+
+ if (dev_id == ASUS_WMI_DEVID_FAN_CTRL) {
+ /*
+ * We need to find a better way, probably using sfun,
+ * bits or spec ...
+ * Currently we disable it if:
+ * - ASUS_WMI_UNSUPPORTED_METHOD is returned
+ * - reverved bits are non-zero
+ * - sfun and presence bit are not set
+ */
+ if (value == ASUS_WMI_UNSUPPORTED_METHOD || value & 0xFFF80000
+ || (!asus->sfun && !(value & ASUS_WMI_DSTS_PRESENCE_BIT)))
+ ok = false;
+ } else if (dev_id == ASUS_WMI_DEVID_THERMAL_CTRL) {
+ /* If value is zero, something is clearly wrong */
+ if (value == 0)
+ ok = false;
+ }
+
+ return ok ? attr->mode : 0;
+}
+
+static struct attribute_group hwmon_attribute_group = {
+ .is_visible = asus_hwmon_sysfs_is_visible,
+ .attrs = hwmon_attributes
+};
+__ATTRIBUTE_GROUPS(hwmon_attribute);
+
+static int asus_wmi_hwmon_init(struct asus_wmi *asus)
+{
+ struct device *hwmon;
+
+ hwmon = hwmon_device_register_with_groups(&asus->platform_device->dev,
+ "asus", asus,
+ hwmon_attribute_groups);
+ if (IS_ERR(hwmon)) {
+ pr_err("Could not register asus hwmon device\n");
+ return PTR_ERR(hwmon);
+ }
+ return 0;
+}
+
+/*
+ * Backlight
+ */
+static int read_backlight_power(struct asus_wmi *asus)
+{
+ int ret;
+ if (asus->driver->quirks->store_backlight_power)
+ ret = !asus->driver->panel_power;
+ else
+ ret = asus_wmi_get_devstate_simple(asus,
+ ASUS_WMI_DEVID_BACKLIGHT);
+
+ if (ret < 0)
+ return ret;
+
+ return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+}
+
+static int read_brightness_max(struct asus_wmi *asus)
+{
+ u32 retval;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
+
+ if (err < 0)
+ return err;
+
+ retval = retval & ASUS_WMI_DSTS_MAX_BRIGTH_MASK;
+ retval >>= 8;
+
+ if (!retval)
+ return -ENODEV;
+
+ return retval;
+}
+
+static int read_brightness(struct backlight_device *bd)
+{
+ struct asus_wmi *asus = bl_get_data(bd);
+ u32 retval;
+ int err;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_BRIGHTNESS, &retval);
+
+ if (err < 0)
+ return err;
+
+ return retval & ASUS_WMI_DSTS_BRIGHTNESS_MASK;
+}
+
+static u32 get_scalar_command(struct backlight_device *bd)
+{
+ struct asus_wmi *asus = bl_get_data(bd);
+ u32 ctrl_param = 0;
+
+ if ((asus->driver->brightness < bd->props.brightness) ||
+ bd->props.brightness == bd->props.max_brightness)
+ ctrl_param = 0x00008001;
+ else if ((asus->driver->brightness > bd->props.brightness) ||
+ bd->props.brightness == 0)
+ ctrl_param = 0x00008000;
+
+ asus->driver->brightness = bd->props.brightness;
+
+ return ctrl_param;
+}
+
+static int update_bl_status(struct backlight_device *bd)
+{
+ struct asus_wmi *asus = bl_get_data(bd);
+ u32 ctrl_param;
+ int power, err = 0;
+
+ power = read_backlight_power(asus);
+ if (power != -ENODEV && bd->props.power != power) {
+ ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK);
+ err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BACKLIGHT,
+ ctrl_param, NULL);
+ if (asus->driver->quirks->store_backlight_power)
+ asus->driver->panel_power = bd->props.power;
+
+ /* When using scalar brightness, updating the brightness
+ * will mess with the backlight power */
+ if (asus->driver->quirks->scalar_panel_brightness)
+ return err;
+ }
+
+ if (asus->driver->quirks->scalar_panel_brightness)
+ ctrl_param = get_scalar_command(bd);
+ else
+ ctrl_param = bd->props.brightness;
+
+ err = asus_wmi_set_devstate(ASUS_WMI_DEVID_BRIGHTNESS,
+ ctrl_param, NULL);
+
+ return err;
+}
+
+static const struct backlight_ops asus_wmi_bl_ops = {
+ .get_brightness = read_brightness,
+ .update_status = update_bl_status,
+};
+
+static int asus_wmi_backlight_notify(struct asus_wmi *asus, int code)
+{
+ struct backlight_device *bd = asus->backlight_device;
+ int old = bd->props.brightness;
+ int new = old;
+
+ if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
+ new = code - NOTIFY_BRNUP_MIN + 1;
+ else if (code >= NOTIFY_BRNDOWN_MIN && code <= NOTIFY_BRNDOWN_MAX)
+ new = code - NOTIFY_BRNDOWN_MIN;
+
+ bd->props.brightness = new;
+ backlight_update_status(bd);
+ backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
+
+ return old;
+}
+
+static int asus_wmi_backlight_init(struct asus_wmi *asus)
+{
+ struct backlight_device *bd;
+ struct backlight_properties props;
+ int max;
+ int power;
+
+ max = read_brightness_max(asus);
+ if (max < 0)
+ return max;
+
+ power = read_backlight_power(asus);
+
+ if (power == -ENODEV)
+ power = FB_BLANK_UNBLANK;
+ else if (power < 0)
+ return power;
+
+ memset(&props, 0, sizeof(struct backlight_properties));
+ props.type = BACKLIGHT_PLATFORM;
+ props.max_brightness = max;
+ bd = backlight_device_register(asus->driver->name,
+ &asus->platform_device->dev, asus,
+ &asus_wmi_bl_ops, &props);
+ if (IS_ERR(bd)) {
+ pr_err("Could not register backlight device\n");
+ return PTR_ERR(bd);
+ }
+
+ asus->backlight_device = bd;
+
+ if (asus->driver->quirks->store_backlight_power)
+ asus->driver->panel_power = power;
+
+ bd->props.brightness = read_brightness(bd);
+ bd->props.power = power;
+ backlight_update_status(bd);
+
+ asus->driver->brightness = bd->props.brightness;
+
+ return 0;
+}
+
+static void asus_wmi_backlight_exit(struct asus_wmi *asus)
+{
+ backlight_device_unregister(asus->backlight_device);
+
+ asus->backlight_device = NULL;
+}
+
+static int is_display_toggle(int code)
+{
+ /* display toggle keys */
+ if ((code >= 0x61 && code <= 0x67) ||
+ (code >= 0x8c && code <= 0x93) ||
+ (code >= 0xa0 && code <= 0xa7) ||
+ (code >= 0xd0 && code <= 0xd5))
+ return 1;
+
+ return 0;
+}
+
+static void asus_wmi_notify(u32 value, void *context)
+{
+ struct asus_wmi *asus = context;
+ struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+ int code;
+ int orig_code;
+ unsigned int key_value = 1;
+ bool autorelease = 1;
+
+ status = wmi_get_event_data(value, &response);
+ if (status != AE_OK) {
+ pr_err("bad event status 0x%x\n", status);
+ return;
+ }
+
+ obj = (union acpi_object *)response.pointer;
+
+ if (!obj || obj->type != ACPI_TYPE_INTEGER)
+ goto exit;
+
+ code = obj->integer.value;
+ orig_code = code;
+
+ if (asus->driver->key_filter) {
+ asus->driver->key_filter(asus->driver, &code, &key_value,
+ &autorelease);
+ if (code == ASUS_WMI_KEY_IGNORE)
+ goto exit;
+ }
+
+ if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX)
+ code = ASUS_WMI_BRN_UP;
+ else if (code >= NOTIFY_BRNDOWN_MIN &&
+ code <= NOTIFY_BRNDOWN_MAX)
+ code = ASUS_WMI_BRN_DOWN;
+
+ if (code == ASUS_WMI_BRN_DOWN || code == ASUS_WMI_BRN_UP) {
+ if (!acpi_video_backlight_support()) {
+ asus_wmi_backlight_notify(asus, orig_code);
+ goto exit;
+ }
+ }
+
+ if (is_display_toggle(code) &&
+ asus->driver->quirks->no_display_toggle)
+ goto exit;
+
+ if (!sparse_keymap_report_event(asus->inputdev, code,
+ key_value, autorelease))
+ pr_info("Unknown key %x pressed\n", code);
+
+exit:
+ kfree(obj);
+}
+
+/*
+ * 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_wmi(struct asus_wmi *asus, int devid,
+ const char *buf, size_t count)
+{
+ u32 retval;
+ int rv, err, value;
+
+ value = asus_wmi_get_devstate_simple(asus, devid);
+ if (value == -ENODEV) /* Check device presence */
+ return value;
+
+ rv = parse_arg(buf, count, &value);
+ err = asus_wmi_set_devstate(devid, value, &retval);
+
+ if (err < 0)
+ return err;
+
+ return rv;
+}
+
+static ssize_t show_sys_wmi(struct asus_wmi *asus, int devid, char *buf)
+{
+ int value = asus_wmi_get_devstate_simple(asus, devid);
+
+ if (value < 0)
+ return value;
+
+ return sprintf(buf, "%d\n", value);
+}
+
+#define ASUS_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
+ static ssize_t show_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+ { \
+ struct asus_wmi *asus = dev_get_drvdata(dev); \
+ \
+ return show_sys_wmi(asus, _cm, buf); \
+ } \
+ static ssize_t store_##_name(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+ { \
+ struct asus_wmi *asus = dev_get_drvdata(dev); \
+ \
+ return store_sys_wmi(asus, _cm, buf, count); \
+ } \
+ static struct device_attribute dev_attr_##_name = { \
+ .attr = { \
+ .name = __stringify(_name), \
+ .mode = _mode }, \
+ .show = show_##_name, \
+ .store = store_##_name, \
+ }
+
+ASUS_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, ASUS_WMI_DEVID_TOUCHPAD);
+ASUS_WMI_CREATE_DEVICE_ATTR(camera, 0644, ASUS_WMI_DEVID_CAMERA);
+ASUS_WMI_CREATE_DEVICE_ATTR(cardr, 0644, ASUS_WMI_DEVID_CARDREADER);
+ASUS_WMI_CREATE_DEVICE_ATTR(lid_resume, 0644, ASUS_WMI_DEVID_LID_RESUME);
+
+static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int value, rv;
+
+ if (!count || sscanf(buf, "%i", &value) != 1)
+ return -EINVAL;
+ if (value < 0 || value > 2)
+ return -EINVAL;
+
+ rv = asus_wmi_evaluate_method(ASUS_WMI_METHODID_CFVS, value, 0, NULL);
+ if (rv < 0)
+ return rv;
+
+ return count;
+}
+
+static DEVICE_ATTR(cpufv, S_IRUGO | S_IWUSR, NULL, store_cpufv);
+
+static struct attribute *platform_attributes[] = {
+ &dev_attr_cpufv.attr,
+ &dev_attr_camera.attr,
+ &dev_attr_cardr.attr,
+ &dev_attr_touchpad.attr,
+ &dev_attr_lid_resume.attr,
+ NULL
+};
+
+static umode_t asus_sysfs_is_visible(struct kobject *kobj,
+ struct attribute *attr, int idx)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct asus_wmi *asus = platform_get_drvdata(pdev);
+ bool ok = true;
+ int devid = -1;
+
+ if (attr == &dev_attr_camera.attr)
+ devid = ASUS_WMI_DEVID_CAMERA;
+ else if (attr == &dev_attr_cardr.attr)
+ devid = ASUS_WMI_DEVID_CARDREADER;
+ else if (attr == &dev_attr_touchpad.attr)
+ devid = ASUS_WMI_DEVID_TOUCHPAD;
+ else if (attr == &dev_attr_lid_resume.attr)
+ devid = ASUS_WMI_DEVID_LID_RESUME;
+
+ if (devid != -1)
+ ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
+
+ return ok ? attr->mode : 0;
+}
+
+static struct attribute_group platform_attribute_group = {
+ .is_visible = asus_sysfs_is_visible,
+ .attrs = platform_attributes
+};
+
+static void asus_wmi_sysfs_exit(struct platform_device *device)
+{
+ sysfs_remove_group(&device->dev.kobj, &platform_attribute_group);
+}
+
+static int asus_wmi_sysfs_init(struct platform_device *device)
+{
+ return sysfs_create_group(&device->dev.kobj, &platform_attribute_group);
+}
+
+/*
+ * Platform device
+ */
+static int asus_wmi_platform_init(struct asus_wmi *asus)
+{
+ int rv;
+
+ /* INIT enable hotkeys on some models */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_INIT, 0, 0, &rv))
+ pr_info("Initialization: %#x\n", rv);
+
+ /* We don't know yet what to do with this version... */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SPEC, 0, 0x9, &rv)) {
+ pr_info("BIOS WMI version: %d.%d\n", rv >> 16, rv & 0xFF);
+ asus->spec = rv;
+ }
+
+ /*
+ * The SFUN method probably allows the original driver to get the list
+ * of features supported by a given model. For now, 0x0100 or 0x0800
+ * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
+ * The significance of others is yet to be found.
+ */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_SFUN, 0, 0, &rv)) {
+ pr_info("SFUN value: %#x\n", rv);
+ asus->sfun = rv;
+ }
+
+ /*
+ * Eee PC and Notebooks seems to have different method_id for DSTS,
+ * but it may also be related to the BIOS's SPEC.
+ * Note, on most Eeepc, there is no way to check if a method exist
+ * or note, while on notebooks, they returns 0xFFFFFFFE on failure,
+ * but once again, SPEC may probably be used for that kind of things.
+ */
+ if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
+ asus->dsts_id = ASUS_WMI_METHODID_DSTS;
+ else
+ asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
+
+ /* CWAP allow to define the behavior of the Fn+F2 key,
+ * this method doesn't seems to be present on Eee PCs */
+ if (asus->driver->quirks->wapf >= 0)
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
+ asus->driver->quirks->wapf, NULL);
+
+ return asus_wmi_sysfs_init(asus->platform_device);
+}
+
+static void asus_wmi_platform_exit(struct asus_wmi *asus)
+{
+ asus_wmi_sysfs_exit(asus->platform_device);
+}
+
+/*
+ * debugfs
+ */
+struct asus_wmi_debugfs_node {
+ struct asus_wmi *asus;
+ char *name;
+ int (*show) (struct seq_file *m, void *data);
+};
+
+static int show_dsts(struct seq_file *m, void *data)
+{
+ struct asus_wmi *asus = m->private;
+ int err;
+ u32 retval = -1;
+
+ err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
+
+ if (err < 0)
+ return err;
+
+ seq_printf(m, "DSTS(%#x) = %#x\n", asus->debug.dev_id, retval);
+
+ return 0;
+}
+
+static int show_devs(struct seq_file *m, void *data)
+{
+ struct asus_wmi *asus = m->private;
+ int err;
+ u32 retval = -1;
+
+ err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
+ &retval);
+
+ if (err < 0)
+ return err;
+
+ seq_printf(m, "DEVS(%#x, %#x) = %#x\n", asus->debug.dev_id,
+ asus->debug.ctrl_param, retval);
+
+ return 0;
+}
+
+static int show_call(struct seq_file *m, void *data)
+{
+ struct asus_wmi *asus = m->private;
+ struct bios_args args = {
+ .arg0 = asus->debug.dev_id,
+ .arg1 = asus->debug.ctrl_param,
+ };
+ struct acpi_buffer input = { (acpi_size) sizeof(args), &args };
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *obj;
+ acpi_status status;
+
+ status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
+ 1, asus->debug.method_id,
+ &input, &output);
+
+ if (ACPI_FAILURE(status))
+ return -EIO;
+
+ obj = (union acpi_object *)output.pointer;
+ if (obj && obj->type == ACPI_TYPE_INTEGER)
+ seq_printf(m, "%#x(%#x, %#x) = %#x\n", asus->debug.method_id,
+ asus->debug.dev_id, asus->debug.ctrl_param,
+ (u32) obj->integer.value);
+ else
+ seq_printf(m, "%#x(%#x, %#x) = t:%d\n", asus->debug.method_id,
+ asus->debug.dev_id, asus->debug.ctrl_param,
+ obj ? obj->type : -1);
+
+ kfree(obj);
+
+ return 0;
+}
+
+static struct asus_wmi_debugfs_node asus_wmi_debug_files[] = {
+ {NULL, "devs", show_devs},
+ {NULL, "dsts", show_dsts},
+ {NULL, "call", show_call},
+};
+
+static int asus_wmi_debugfs_open(struct inode *inode, struct file *file)
+{
+ struct asus_wmi_debugfs_node *node = inode->i_private;
+
+ return single_open(file, node->show, node->asus);
+}
+
+static const struct file_operations asus_wmi_debugfs_io_ops = {
+ .owner = THIS_MODULE,
+ .open = asus_wmi_debugfs_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void asus_wmi_debugfs_exit(struct asus_wmi *asus)
+{
+ debugfs_remove_recursive(asus->debug.root);
+}
+
+static int asus_wmi_debugfs_init(struct asus_wmi *asus)
+{
+ struct dentry *dent;
+ int i;
+
+ asus->debug.root = debugfs_create_dir(asus->driver->name, NULL);
+ if (!asus->debug.root) {
+ pr_err("failed to create debugfs directory\n");
+ goto error_debugfs;
+ }
+
+ dent = debugfs_create_x32("method_id", S_IRUGO | S_IWUSR,
+ asus->debug.root, &asus->debug.method_id);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_x32("dev_id", S_IRUGO | S_IWUSR,
+ asus->debug.root, &asus->debug.dev_id);
+ if (!dent)
+ goto error_debugfs;
+
+ dent = debugfs_create_x32("ctrl_param", S_IRUGO | S_IWUSR,
+ asus->debug.root, &asus->debug.ctrl_param);
+ if (!dent)
+ goto error_debugfs;
+
+ for (i = 0; i < ARRAY_SIZE(asus_wmi_debug_files); i++) {
+ struct asus_wmi_debugfs_node *node = &asus_wmi_debug_files[i];
+
+ node->asus = asus;
+ dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO,
+ asus->debug.root, node,
+ &asus_wmi_debugfs_io_ops);
+ if (!dent) {
+ pr_err("failed to create debug file: %s\n", node->name);
+ goto error_debugfs;
+ }
+ }
+
+ return 0;
+
+error_debugfs:
+ asus_wmi_debugfs_exit(asus);
+ return -ENOMEM;
+}
+
+/*
+ * WMI Driver
+ */
+static int asus_wmi_add(struct platform_device *pdev)
+{
+ struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
+ struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
+ struct asus_wmi *asus;
+ const char *chassis_type;
+ acpi_status status;
+ int err;
+ u32 result;
+
+ asus = kzalloc(sizeof(struct asus_wmi), GFP_KERNEL);
+ if (!asus)
+ return -ENOMEM;
+
+ asus->driver = wdrv;
+ asus->platform_device = pdev;
+ wdrv->platform_device = pdev;
+ platform_set_drvdata(asus->platform_device, asus);
+
+ if (wdrv->detect_quirks)
+ wdrv->detect_quirks(asus->driver);
+
+ err = asus_wmi_platform_init(asus);
+ if (err)
+ goto fail_platform;
+
+ err = asus_wmi_input_init(asus);
+ if (err)
+ goto fail_input;
+
+ err = asus_wmi_hwmon_init(asus);
+ if (err)
+ goto fail_hwmon;
+
+ err = asus_wmi_led_init(asus);
+ if (err)
+ goto fail_leds;
+
+ err = asus_wmi_rfkill_init(asus);
+ if (err)
+ goto fail_rfkill;
+
+ /* Some Asus desktop boards export an acpi-video backlight interface,
+ stop this from showing up */
+ chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
+ if (chassis_type && !strcmp(chassis_type, "3"))
+ acpi_video_dmi_promote_vendor();
+ if (asus->driver->quirks->wmi_backlight_power)
+ acpi_video_dmi_promote_vendor();
+ if (!acpi_video_backlight_support()) {
+ pr_info("Disabling ACPI video driver\n");
+ acpi_video_unregister();
+ err = asus_wmi_backlight_init(asus);
+ if (err && err != -ENODEV)
+ goto fail_backlight;
+ } else
+ pr_info("Backlight controlled by ACPI video driver\n");
+
+ status = wmi_install_notify_handler(asus->driver->event_guid,
+ asus_wmi_notify, asus);
+ if (ACPI_FAILURE(status)) {
+ pr_err("Unable to register notify handler - %d\n", status);
+ err = -ENODEV;
+ goto fail_wmi_handler;
+ }
+
+ err = asus_wmi_debugfs_init(asus);
+ if (err)
+ goto fail_debugfs;
+
+ asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_WLAN, &result);
+ if (result & (ASUS_WMI_DSTS_PRESENCE_BIT | ASUS_WMI_DSTS_USER_BIT))
+ asus->driver->wlan_ctrl_by_user = 1;
+
+ return 0;
+
+fail_debugfs:
+ wmi_remove_notify_handler(asus->driver->event_guid);
+fail_wmi_handler:
+ asus_wmi_backlight_exit(asus);
+fail_backlight:
+ asus_wmi_rfkill_exit(asus);
+fail_rfkill:
+ asus_wmi_led_exit(asus);
+fail_leds:
+fail_hwmon:
+ asus_wmi_input_exit(asus);
+fail_input:
+ asus_wmi_platform_exit(asus);
+fail_platform:
+ kfree(asus);
+ return err;
+}
+
+static int asus_wmi_remove(struct platform_device *device)
+{
+ struct asus_wmi *asus;
+
+ asus = platform_get_drvdata(device);
+ wmi_remove_notify_handler(asus->driver->event_guid);
+ asus_wmi_backlight_exit(asus);
+ asus_wmi_input_exit(asus);
+ asus_wmi_led_exit(asus);
+ asus_wmi_rfkill_exit(asus);
+ asus_wmi_debugfs_exit(asus);
+ asus_wmi_platform_exit(asus);
+
+ kfree(asus);
+ return 0;
+}
+
+/*
+ * Platform driver - hibernate/resume callbacks
+ */
+static int asus_hotk_thaw(struct device *device)
+{
+ struct asus_wmi *asus = dev_get_drvdata(device);
+
+ if (asus->wlan.rfkill) {
+ bool wlan;
+
+ /*
+ * Work around bios bug - acpi _PTS turns off the wireless led
+ * during suspend. Normally it restores it on resume, but
+ * we should kick it ourselves in case hibernation is aborted.
+ */
+ wlan = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WLAN);
+ asus_wmi_set_devstate(ASUS_WMI_DEVID_WLAN, wlan, NULL);
+ }
+
+ return 0;
+}
+
+static int asus_hotk_restore(struct device *device)
+{
+ struct asus_wmi *asus = dev_get_drvdata(device);
+ int bl;
+
+ /* Refresh both wlan rfkill state and pci hotplug */
+ if (asus->wlan.rfkill)
+ asus_rfkill_hotplug(asus);
+
+ if (asus->bluetooth.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus,
+ ASUS_WMI_DEVID_BLUETOOTH);
+ rfkill_set_sw_state(asus->bluetooth.rfkill, bl);
+ }
+ if (asus->wimax.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WIMAX);
+ rfkill_set_sw_state(asus->wimax.rfkill, bl);
+ }
+ if (asus->wwan3g.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_WWAN3G);
+ rfkill_set_sw_state(asus->wwan3g.rfkill, bl);
+ }
+ if (asus->gps.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPS);
+ rfkill_set_sw_state(asus->gps.rfkill, bl);
+ }
+ if (asus->uwb.rfkill) {
+ bl = !asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_UWB);
+ rfkill_set_sw_state(asus->uwb.rfkill, bl);
+ }
+
+ return 0;
+}
+
+static const struct dev_pm_ops asus_pm_ops = {
+ .thaw = asus_hotk_thaw,
+ .restore = asus_hotk_restore,
+};
+
+static int asus_wmi_probe(struct platform_device *pdev)
+{
+ struct platform_driver *pdrv = to_platform_driver(pdev->dev.driver);
+ struct asus_wmi_driver *wdrv = to_asus_wmi_driver(pdrv);
+ int ret;
+
+ if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
+ pr_warn("Management GUID not found\n");
+ return -ENODEV;
+ }
+
+ if (wdrv->event_guid && !wmi_has_guid(wdrv->event_guid)) {
+ pr_warn("Event GUID not found\n");
+ return -ENODEV;
+ }
+
+ if (wdrv->probe) {
+ ret = wdrv->probe(pdev);
+ if (ret)
+ return ret;
+ }
+
+ return asus_wmi_add(pdev);
+}
+
+static bool used;
+
+int __init_or_module asus_wmi_register_driver(struct asus_wmi_driver *driver)
+{
+ struct platform_driver *platform_driver;
+ struct platform_device *platform_device;
+
+ if (used)
+ return -EBUSY;
+
+ platform_driver = &driver->platform_driver;
+ platform_driver->remove = asus_wmi_remove;
+ platform_driver->driver.owner = driver->owner;
+ platform_driver->driver.name = driver->name;
+ platform_driver->driver.pm = &asus_pm_ops;
+
+ platform_device = platform_create_bundle(platform_driver,
+ asus_wmi_probe,
+ NULL, 0, NULL, 0);
+ if (IS_ERR(platform_device))
+ return PTR_ERR(platform_device);
+
+ used = true;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(asus_wmi_register_driver);
+
+void asus_wmi_unregister_driver(struct asus_wmi_driver *driver)
+{
+ platform_device_unregister(driver->platform_device);
+ platform_driver_unregister(&driver->platform_driver);
+ used = false;
+}
+EXPORT_SYMBOL_GPL(asus_wmi_unregister_driver);
+
+static int __init asus_wmi_init(void)
+{
+ if (!wmi_has_guid(ASUS_WMI_MGMT_GUID)) {
+ pr_info("Asus Management GUID not found\n");
+ return -ENODEV;
+ }
+
+ pr_info("ASUS WMI generic driver loaded\n");
+ return 0;
+}
+
+static void __exit asus_wmi_exit(void)
+{
+ pr_info("ASUS WMI generic driver unloaded\n");
+}
+
+module_init(asus_wmi_init);
+module_exit(asus_wmi_exit);
Code Review / kvmfornfv.git / blobdiff