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e8f56c80ae
linux-next/drivers/platform/x86/asus-wmi.c
AceLan Kao e8f56c80ae asus-wmi: control wlan-led only if wapf == 4 
Controlling the wlan led seems to have some side effects to the machines
with wapf value is not equal to 4. It will make the keyboard backlight
out of order.
So, the patch will enable the wlan led function only if the wapf == 4.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=46791

Reported-by: Mirto Silvio Busico <m.busico@ieee.org>
Tested-by: Karol Herbst <karolherbst@me.com>
Tested-by: drunkenbatman <drunkenbatman@gmail.com>
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
2013-07-10 15:42:47 -04:00

2004 lines
49 KiB
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/*
* 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 <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.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 device *hwmon_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;
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;
else
tmp = 0;
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 == 4)) {
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);
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);
if (pci_bus_add_device(dev))
pr_err("Unable to hotplug wifi\n");
}
} else {
dev = pci_get_slot(bus, 0);
if (dev) {
pci_stop_and_remove_bus_device(dev);
pci_dev_put(dev);
}
}
}
out_unlock:
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 == 4))
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 SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
static ssize_t
show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "asus\n");
}
static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
static struct attribute *hwmon_attributes[] = {
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_name.dev_attr.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 == &sensor_dev_attr_pwm1.dev_attr.attr)
dev_id = ASUS_WMI_DEVID_FAN_CTRL;
else if (attr == &sensor_dev_attr_temp1_input.dev_attr.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
};
static void asus_wmi_hwmon_exit(struct asus_wmi *asus)
{
struct device *hwmon;
hwmon = asus->hwmon_device;
if (!hwmon)
return;
sysfs_remove_group(&hwmon->kobj, &hwmon_attribute_group);
hwmon_device_unregister(hwmon);
asus->hwmon_device = NULL;
}
static int asus_wmi_hwmon_init(struct asus_wmi *asus)
{
struct device *hwmon;
int result;
hwmon = hwmon_device_register(&asus->platform_device->dev);
if (IS_ERR(hwmon)) {
pr_err("Could not register asus hwmon device\n");
return PTR_ERR(hwmon);
}
dev_set_drvdata(hwmon, asus);
asus->hwmon_device = hwmon;
result = sysfs_create_group(&hwmon->kobj, &hwmon_attribute_group);
if (result)
asus_wmi_hwmon_exit(asus);
return result;
}
/*
* 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 == -ENODEV)
max = 0;
else 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)
{
if (asus->backlight_device)
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;
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;
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:
asus_wmi_hwmon_exit(asus);
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_hwmon_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);
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