Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751834Ab1BZJWf (ORCPT ); Sat, 26 Feb 2011 04:22:35 -0500 Received: from slow3-v.mail.gandi.net ([217.70.178.89]:36549 "EHLO slow3-v.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751709Ab1BZJWX (ORCPT ); Sat, 26 Feb 2011 04:22:23 -0500 X-WhiteListed: mail was accepted with no delay X-WhiteListed: mail was accepted with no delay X-WhiteListed: mail was accepted with no delay X-WhiteListed: mail was accepted with no delay X-Originating-IP: 217.70.178.129 X-Originating-IP: 82.241.209.44 From: Corentin Chary To: Matthew Garrett Cc: Dmitry Torokhov , Corentin Chary , linux-kernel@vger.kernel.org (open list), platform-driver-x86@vger.kernel.org (open list:X86 PLATFORM DRIVERS), acpi4asus-user@lists.sourceforge.net (open list:ASUS NOTEBOOKS AN...) Subject: [PATCH 01/14] asus-wmi: move generic code to asus-wmi Date: Sat, 26 Feb 2011 10:20:30 +0100 Message-Id: <1298712045-17671-2-git-send-email-corentincj@iksaif.net> X-Mailer: git-send-email 1.7.4 In-Reply-To: <1298712045-17671-1-git-send-email-corentincj@iksaif.net> References: <1298712045-17671-1-git-send-email-corentincj@iksaif.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 75625 Lines: 2955 New Asus notebooks are using a WMI device similar to the one used in Eee PCs. Since we don't want to load a module named eeepc-laptop on Asus Notebooks, start by copying all the code to asus-wmi.c. Signed-off-by: Corentin Chary --- drivers/platform/x86/Makefile | 2 +- drivers/platform/x86/asus-wmi.c | 1454 ++++++++++++++++++++++++++++++++++++++ drivers/platform/x86/eeepc-wmi.c | 1454 -------------------------------------- 3 files changed, 1455 insertions(+), 1455 deletions(-) create mode 100644 drivers/platform/x86/asus-wmi.c delete mode 100644 drivers/platform/x86/eeepc-wmi.c diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index 951b516..3672b04 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -4,7 +4,7 @@ # obj-$(CONFIG_ASUS_LAPTOP) += asus-laptop.o obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o -obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o +obj-$(CONFIG_EEEPC_WMI) += asus-wmi.o eeepc-wmi.o obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o obj-$(CONFIG_ACPI_CMPC) += classmate-laptop.o obj-$(CONFIG_COMPAL_LAPTOP) += compal-laptop.o diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c new file mode 100644 index 0000000..d399775 --- /dev/null +++ b/drivers/platform/x86/asus-wmi.c @@ -0,0 +1,1454 @@ +/* + * Eee PC WMI hotkey driver + * + * Copyright(C) 2010 Intel Corporation. + * Copyright(C) 2010 Corentin Chary + * + * Portions based on wistron_btns.c: + * Copyright (C) 2005 Miloslav Trmac + * Copyright (C) 2005 Bernhard Rosenkraenzer + * Copyright (C) 2005 Dmitry Torokhov + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define EEEPC_WMI_FILE "eeepc-wmi" + +MODULE_AUTHOR("Yong Wang "); +MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); +MODULE_LICENSE("GPL"); + +#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */ + +#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000" +#define EEEPC_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" + +MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID); +MODULE_ALIAS("wmi:"EEEPC_WMI_MGMT_GUID); + +#define NOTIFY_BRNUP_MIN 0x11 +#define NOTIFY_BRNUP_MAX 0x1f +#define NOTIFY_BRNDOWN_MIN 0x20 +#define NOTIFY_BRNDOWN_MAX 0x2e + +/* WMI Methods */ +#define EEEPC_WMI_METHODID_DSTS 0x53544344 +#define EEEPC_WMI_METHODID_DEVS 0x53564544 +#define EEEPC_WMI_METHODID_CFVS 0x53564643 + +/* Wireless */ +#define EEEPC_WMI_DEVID_WLAN 0x00010011 +#define EEEPC_WMI_DEVID_BLUETOOTH 0x00010013 +#define EEEPC_WMI_DEVID_WIMAX 0x00010017 +#define EEEPC_WMI_DEVID_WWAN3G 0x00010019 + +/* Backlight and Brightness */ +#define EEEPC_WMI_DEVID_BACKLIGHT 0x00050011 +#define EEEPC_WMI_DEVID_BRIGHTNESS 0x00050012 + +/* Misc */ +#define EEEPC_WMI_DEVID_CAMERA 0x00060013 + +/* Storage */ +#define EEEPC_WMI_DEVID_CARDREADER 0x00080013 + +/* Input */ +#define EEEPC_WMI_DEVID_TOUCHPAD 0x00100011 +#define EEEPC_WMI_DEVID_TOUCHPAD_LED 0x00100012 + +/* DSTS masks */ +#define EEEPC_WMI_DSTS_STATUS_BIT 0x00000001 +#define EEEPC_WMI_DSTS_PRESENCE_BIT 0x00010000 +#define EEEPC_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF +#define EEEPC_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 + +static bool hotplug_wireless; + +module_param(hotplug_wireless, bool, 0444); +MODULE_PARM_DESC(hotplug_wireless, + "Enable hotplug for wireless device. " + "If your laptop needs that, please report to " + "acpi4asus-user@lists.sourceforge.net."); + +static const struct key_entry eeepc_wmi_keymap[] = { + /* Sleep already handled via generic ACPI code */ + { KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } }, + { KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } }, + { KE_KEY, 0x30, { KEY_VOLUMEUP } }, + { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, + { KE_KEY, 0x32, { KEY_MUTE } }, + { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */ + { KE_KEY, 0x5d, { KEY_WLAN } }, + { KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */ + { KE_KEY, 0x82, { KEY_CAMERA } }, + { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } }, + { KE_KEY, 0x88, { KEY_WLAN } }, + { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, + { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */ + { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */ + { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } }, + { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } }, + { KE_KEY, 0xec, { KEY_CAMERA_UP } }, + { KE_KEY, 0xed, { KEY_CAMERA_DOWN } }, + { KE_KEY, 0xee, { KEY_CAMERA_LEFT } }, + { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } }, + { KE_END, 0}, +}; + +struct bios_args { + u32 dev_id; + u32 ctrl_param; +}; + +/* + * eeepc-wmi/ - debugfs root directory + * dev_id - current dev_id + * ctrl_param - current ctrl_param + * devs - call DEVS(dev_id, ctrl_param) and print result + * dsts - call DSTS(dev_id) and print result + */ +struct eeepc_wmi_debug { + struct dentry *root; + u32 dev_id; + u32 ctrl_param; +}; + +struct eeepc_wmi { + bool hotplug_wireless; + + struct input_dev *inputdev; + struct backlight_device *backlight_device; + struct platform_device *platform_device; + + struct led_classdev tpd_led; + int tpd_led_wk; + struct workqueue_struct *led_workqueue; + struct work_struct tpd_led_work; + + struct rfkill *wlan_rfkill; + struct rfkill *bluetooth_rfkill; + struct rfkill *wimax_rfkill; + struct rfkill *wwan3g_rfkill; + + struct hotplug_slot *hotplug_slot; + struct mutex hotplug_lock; + struct mutex wmi_lock; + struct workqueue_struct *hotplug_workqueue; + struct work_struct hotplug_work; + + struct eeepc_wmi_debug debug; +}; + +static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc) +{ + int err; + + eeepc->inputdev = input_allocate_device(); + if (!eeepc->inputdev) + return -ENOMEM; + + eeepc->inputdev->name = "Eee PC WMI hotkeys"; + eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0"; + eeepc->inputdev->id.bustype = BUS_HOST; + eeepc->inputdev->dev.parent = &eeepc->platform_device->dev; + + err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL); + if (err) + goto err_free_dev; + + err = input_register_device(eeepc->inputdev); + if (err) + goto err_free_keymap; + + return 0; + +err_free_keymap: + sparse_keymap_free(eeepc->inputdev); +err_free_dev: + input_free_device(eeepc->inputdev); + return err; +} + +static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc) +{ + if (eeepc->inputdev) { + sparse_keymap_free(eeepc->inputdev); + input_unregister_device(eeepc->inputdev); + } + + eeepc->inputdev = NULL; +} + +static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *retval) +{ + struct acpi_buffer input = { (acpi_size)sizeof(u32), &dev_id }; + struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + u32 tmp; + + status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, + 1, EEEPC_WMI_METHODID_DSTS, + &input, &output); + + if (ACPI_FAILURE(status)) + return status; + + 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); + + return status; + +} + +static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param, + u32 *retval) +{ + struct bios_args args = { + .dev_id = dev_id, + .ctrl_param = ctrl_param, + }; + struct acpi_buffer input = { (acpi_size)sizeof(args), &args }; + acpi_status status; + + if (!retval) { + status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, + EEEPC_WMI_METHODID_DEVS, + &input, NULL); + } else { + struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + u32 tmp; + + status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, + EEEPC_WMI_METHODID_DEVS, + &input, &output); + + if (ACPI_FAILURE(status)) + return status; + + obj = (union acpi_object *)output.pointer; + if (obj && obj->type == ACPI_TYPE_INTEGER) + tmp = (u32)obj->integer.value; + else + tmp = 0; + + *retval = tmp; + + kfree(obj); + } + + return status; +} + +/* Helper for special devices with magic return codes */ +static int eeepc_wmi_get_devstate_bits(u32 dev_id, u32 mask) +{ + u32 retval = 0; + acpi_status status; + + status = eeepc_wmi_get_devstate(dev_id, &retval); + + if (ACPI_FAILURE(status)) + return -EINVAL; + + if (!(retval & EEEPC_WMI_DSTS_PRESENCE_BIT)) + return -ENODEV; + + return retval & mask; +} + +static int eeepc_wmi_get_devstate_simple(u32 dev_id) +{ + return eeepc_wmi_get_devstate_bits(dev_id, EEEPC_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 Eeepc 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 eeepc_wmi *eeepc; + + eeepc = container_of(work, struct eeepc_wmi, tpd_led_work); + + ctrl_param = eeepc->tpd_led_wk; + eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); +} + +static void tpd_led_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct eeepc_wmi *eeepc; + + eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); + + eeepc->tpd_led_wk = !!value; + queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work); +} + +static int read_tpd_led_state(struct eeepc_wmi *eeepc) +{ + return eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_TOUCHPAD_LED); +} + +static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) +{ + struct eeepc_wmi *eeepc; + + eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); + + return read_tpd_led_state(eeepc); +} + +static int eeepc_wmi_led_init(struct eeepc_wmi *eeepc) +{ + int rv; + + if (read_tpd_led_state(eeepc) < 0) + return 0; + + eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue"); + if (!eeepc->led_workqueue) + return -ENOMEM; + INIT_WORK(&eeepc->tpd_led_work, tpd_led_update); + + eeepc->tpd_led.name = "eeepc::touchpad"; + eeepc->tpd_led.brightness_set = tpd_led_set; + eeepc->tpd_led.brightness_get = tpd_led_get; + eeepc->tpd_led.max_brightness = 1; + + rv = led_classdev_register(&eeepc->platform_device->dev, + &eeepc->tpd_led); + if (rv) { + destroy_workqueue(eeepc->led_workqueue); + return rv; + } + + return 0; +} + +static void eeepc_wmi_led_exit(struct eeepc_wmi *eeepc) +{ + if (eeepc->tpd_led.dev) + led_classdev_unregister(&eeepc->tpd_led); + if (eeepc->led_workqueue) + destroy_workqueue(eeepc->led_workqueue); +} + +/* + * PCI hotplug (for wlan rfkill) + */ +static bool eeepc_wlan_rfkill_blocked(struct eeepc_wmi *eeepc) +{ + int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); + + if (result < 0) + return false; + return !result; +} + +static void eeepc_rfkill_hotplug(struct eeepc_wmi *eeepc) +{ + struct pci_dev *dev; + struct pci_bus *bus; + bool blocked; + bool absent; + u32 l; + + mutex_lock(&eeepc->wmi_lock); + blocked = eeepc_wlan_rfkill_blocked(eeepc); + mutex_unlock(&eeepc->wmi_lock); + + mutex_lock(&eeepc->hotplug_lock); + + if (eeepc->wlan_rfkill) + rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); + + if (eeepc->hotplug_slot) { + bus = pci_find_bus(0, 1); + if (!bus) { + pr_warning("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_warning("BIOS says wireless lan is %s, " + "but the pci device is %s\n", + blocked ? "blocked" : "unblocked", + absent ? "absent" : "present"); + pr_warning("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_remove_bus_device(dev); + pci_dev_put(dev); + } + } + } + +out_unlock: + mutex_unlock(&eeepc->hotplug_lock); +} + +static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) +{ + struct eeepc_wmi *eeepc = data; + + if (event != ACPI_NOTIFY_BUS_CHECK) + return; + + /* + * We can't call directly eeepc_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 eeepc_rfkill_hotplug + * call later, in a safer context. + */ + queue_work(eeepc->hotplug_workqueue, &eeepc->hotplug_work); +} + +static int eeepc_register_rfkill_notifier(struct eeepc_wmi *eeepc, + 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, + eeepc_rfkill_notify, + eeepc); + if (ACPI_FAILURE(status)) + pr_warning("Failed to register notify on %s\n", node); + } else + return -ENODEV; + + return 0; +} + +static void eeepc_unregister_rfkill_notifier(struct eeepc_wmi *eeepc, + 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, + eeepc_rfkill_notify); + if (ACPI_FAILURE(status)) + pr_err("Error removing rfkill notify handler %s\n", + node); + } +} + +static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, + u8 *value) +{ + int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); + + if (result < 0) + return result; + + *value = !!result; + return 0; +} + +static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) +{ + kfree(hotplug_slot->info); + kfree(hotplug_slot); +} + +static struct hotplug_slot_ops eeepc_hotplug_slot_ops = { + .owner = THIS_MODULE, + .get_adapter_status = eeepc_get_adapter_status, + .get_power_status = eeepc_get_adapter_status, +}; + +static void eeepc_hotplug_work(struct work_struct *work) +{ + struct eeepc_wmi *eeepc; + + eeepc = container_of(work, struct eeepc_wmi, hotplug_work); + eeepc_rfkill_hotplug(eeepc); +} + +static int eeepc_setup_pci_hotplug(struct eeepc_wmi *eeepc) +{ + 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; + } + + eeepc->hotplug_workqueue = + create_singlethread_workqueue("hotplug_workqueue"); + if (!eeepc->hotplug_workqueue) + goto error_workqueue; + + INIT_WORK(&eeepc->hotplug_work, eeepc_hotplug_work); + + eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); + if (!eeepc->hotplug_slot) + goto error_slot; + + eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), + GFP_KERNEL); + if (!eeepc->hotplug_slot->info) + goto error_info; + + eeepc->hotplug_slot->private = eeepc; + eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug; + eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops; + eeepc_get_adapter_status(eeepc->hotplug_slot, + &eeepc->hotplug_slot->info->adapter_status); + + ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi"); + if (ret) { + pr_err("Unable to register hotplug slot - %d\n", ret); + goto error_register; + } + + return 0; + +error_register: + kfree(eeepc->hotplug_slot->info); +error_info: + kfree(eeepc->hotplug_slot); + eeepc->hotplug_slot = NULL; +error_slot: + destroy_workqueue(eeepc->hotplug_workqueue); +error_workqueue: + return ret; +} + +/* + * Rfkill devices + */ +static int eeepc_rfkill_set(void *data, bool blocked) +{ + int dev_id = (unsigned long)data; + u32 ctrl_param = !blocked; + acpi_status status; + + status = eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL); + + if (ACPI_FAILURE(status)) + return -EIO; + + return 0; +} + +static void eeepc_rfkill_query(struct rfkill *rfkill, void *data) +{ + int dev_id = (unsigned long)data; + int result; + + result = eeepc_wmi_get_devstate_simple(dev_id); + + if (result < 0) + return ; + + rfkill_set_sw_state(rfkill, !result); +} + +static int eeepc_rfkill_wlan_set(void *data, bool blocked) +{ + struct eeepc_wmi *eeepc = data; + int ret; + + /* + * This handler is enabled only if hotplug is enabled. + * In this case, the eeepc_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(&eeepc->wmi_lock); + ret = eeepc_rfkill_set((void *)(long)EEEPC_WMI_DEVID_WLAN, blocked); + mutex_unlock(&eeepc->wmi_lock); + return ret; +} + +static void eeepc_rfkill_wlan_query(struct rfkill *rfkill, void *data) +{ + eeepc_rfkill_query(rfkill, (void *)(long)EEEPC_WMI_DEVID_WLAN); +} + +static const struct rfkill_ops eeepc_rfkill_wlan_ops = { + .set_block = eeepc_rfkill_wlan_set, + .query = eeepc_rfkill_wlan_query, +}; + +static const struct rfkill_ops eeepc_rfkill_ops = { + .set_block = eeepc_rfkill_set, + .query = eeepc_rfkill_query, +}; + +static int eeepc_new_rfkill(struct eeepc_wmi *eeepc, + struct rfkill **rfkill, + const char *name, + enum rfkill_type type, int dev_id) +{ + int result = eeepc_wmi_get_devstate_simple(dev_id); + + if (result < 0) + return result; + + if (dev_id == EEEPC_WMI_DEVID_WLAN && eeepc->hotplug_wireless) + *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, + &eeepc_rfkill_wlan_ops, eeepc); + else + *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, + &eeepc_rfkill_ops, (void *)(long)dev_id); + + if (!*rfkill) + return -EINVAL; + + rfkill_init_sw_state(*rfkill, !result); + result = rfkill_register(*rfkill); + if (result) { + rfkill_destroy(*rfkill); + *rfkill = NULL; + return result; + } + return 0; +} + +static void eeepc_wmi_rfkill_exit(struct eeepc_wmi *eeepc) +{ + eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); + eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); + eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); + if (eeepc->wlan_rfkill) { + rfkill_unregister(eeepc->wlan_rfkill); + rfkill_destroy(eeepc->wlan_rfkill); + eeepc->wlan_rfkill = NULL; + } + /* + * Refresh pci hotplug in case the rfkill state was changed after + * eeepc_unregister_rfkill_notifier() + */ + eeepc_rfkill_hotplug(eeepc); + if (eeepc->hotplug_slot) + pci_hp_deregister(eeepc->hotplug_slot); + if (eeepc->hotplug_workqueue) + destroy_workqueue(eeepc->hotplug_workqueue); + + if (eeepc->bluetooth_rfkill) { + rfkill_unregister(eeepc->bluetooth_rfkill); + rfkill_destroy(eeepc->bluetooth_rfkill); + eeepc->bluetooth_rfkill = NULL; + } + if (eeepc->wimax_rfkill) { + rfkill_unregister(eeepc->wimax_rfkill); + rfkill_destroy(eeepc->wimax_rfkill); + eeepc->wimax_rfkill = NULL; + } + if (eeepc->wwan3g_rfkill) { + rfkill_unregister(eeepc->wwan3g_rfkill); + rfkill_destroy(eeepc->wwan3g_rfkill); + eeepc->wwan3g_rfkill = NULL; + } +} + +static int eeepc_wmi_rfkill_init(struct eeepc_wmi *eeepc) +{ + int result = 0; + + mutex_init(&eeepc->hotplug_lock); + mutex_init(&eeepc->wmi_lock); + + result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill, + "eeepc-wlan", RFKILL_TYPE_WLAN, + EEEPC_WMI_DEVID_WLAN); + + if (result && result != -ENODEV) + goto exit; + + result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill, + "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH, + EEEPC_WMI_DEVID_BLUETOOTH); + + if (result && result != -ENODEV) + goto exit; + + result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill, + "eeepc-wimax", RFKILL_TYPE_WIMAX, + EEEPC_WMI_DEVID_WIMAX); + + if (result && result != -ENODEV) + goto exit; + + result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill, + "eeepc-wwan3g", RFKILL_TYPE_WWAN, + EEEPC_WMI_DEVID_WWAN3G); + + if (result && result != -ENODEV) + goto exit; + + if (!eeepc->hotplug_wireless) + goto exit; + + result = eeepc_setup_pci_hotplug(eeepc); + /* + * If we get -EBUSY then something else is handling the PCI hotplug - + * don't fail in this case + */ + if (result == -EBUSY) + result = 0; + + eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); + eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); + eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); + /* + * Refresh pci hotplug in case the rfkill state was changed during + * setup. + */ + eeepc_rfkill_hotplug(eeepc); + +exit: + if (result && result != -ENODEV) + eeepc_wmi_rfkill_exit(eeepc); + + if (result == -ENODEV) + result = 0; + + return result; +} + +/* + * Backlight + */ +static int read_backlight_power(void) +{ + int ret = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BACKLIGHT); + + if (ret < 0) + return ret; + + return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; +} + +static int read_brightness(struct backlight_device *bd) +{ + u32 retval; + acpi_status status; + + status = eeepc_wmi_get_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, &retval); + + if (ACPI_FAILURE(status)) + return -EIO; + else + return retval & EEEPC_WMI_DSTS_BRIGHTNESS_MASK; +} + +static int update_bl_status(struct backlight_device *bd) +{ + u32 ctrl_param; + acpi_status status; + int power; + + ctrl_param = bd->props.brightness; + + status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, + ctrl_param, NULL); + + if (ACPI_FAILURE(status)) + return -EIO; + + power = read_backlight_power(); + if (power != -ENODEV && bd->props.power != power) { + ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); + status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, + ctrl_param, NULL); + + if (ACPI_FAILURE(status)) + return -EIO; + } + return 0; +} + +static const struct backlight_ops eeepc_wmi_bl_ops = { + .get_brightness = read_brightness, + .update_status = update_bl_status, +}; + +static int eeepc_wmi_backlight_notify(struct eeepc_wmi *eeepc, int code) +{ + struct backlight_device *bd = eeepc->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 eeepc_wmi_backlight_init(struct eeepc_wmi *eeepc) +{ + struct backlight_device *bd; + struct backlight_properties props; + int max; + int power; + + max = eeepc_wmi_get_devstate_bits(EEEPC_WMI_DEVID_BRIGHTNESS, + EEEPC_WMI_DSTS_MAX_BRIGTH_MASK); + power = read_backlight_power(); + + if (max < 0 && power < 0) { + /* Try to keep the original error */ + if (max == -ENODEV && power == -ENODEV) + return -ENODEV; + if (max != -ENODEV) + return max; + else + return power; + } + if (max == -ENODEV) + max = 0; + if (power == -ENODEV) + power = FB_BLANK_UNBLANK; + + memset(&props, 0, sizeof(struct backlight_properties)); + props.max_brightness = max; + bd = backlight_device_register(EEEPC_WMI_FILE, + &eeepc->platform_device->dev, eeepc, + &eeepc_wmi_bl_ops, &props); + if (IS_ERR(bd)) { + pr_err("Could not register backlight device\n"); + return PTR_ERR(bd); + } + + eeepc->backlight_device = bd; + + bd->props.brightness = read_brightness(bd); + bd->props.power = power; + backlight_update_status(bd); + + return 0; +} + +static void eeepc_wmi_backlight_exit(struct eeepc_wmi *eeepc) +{ + if (eeepc->backlight_device) + backlight_device_unregister(eeepc->backlight_device); + + eeepc->backlight_device = NULL; +} + +static void eeepc_wmi_notify(u32 value, void *context) +{ + struct eeepc_wmi *eeepc = context; + struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + int code; + int orig_code; + + 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) { + code = obj->integer.value; + orig_code = code; + + if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) + code = NOTIFY_BRNUP_MIN; + else if (code >= NOTIFY_BRNDOWN_MIN && + code <= NOTIFY_BRNDOWN_MAX) + code = NOTIFY_BRNDOWN_MIN; + + if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) { + if (!acpi_video_backlight_support()) + eeepc_wmi_backlight_notify(eeepc, orig_code); + } + + if (!sparse_keymap_report_event(eeepc->inputdev, + code, 1, true)) + pr_info("Unknown key %x pressed\n", code); + } + + 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(int devid, const char *buf, size_t count) +{ + acpi_status status; + u32 retval; + int rv, value; + + value = eeepc_wmi_get_devstate_simple(devid); + if (value == -ENODEV) /* Check device presence */ + return value; + + rv = parse_arg(buf, count, &value); + status = eeepc_wmi_set_devstate(devid, value, &retval); + + if (ACPI_FAILURE(status)) + return -EIO; + return rv; +} + +static ssize_t show_sys_wmi(int devid, char *buf) +{ + int value = eeepc_wmi_get_devstate_simple(devid); + + if (value < 0) + return value; + + return sprintf(buf, "%d\n", value); +} + +#define EEEPC_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ + static ssize_t show_##_name(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ + { \ + return show_sys_wmi(_cm, buf); \ + } \ + static ssize_t store_##_name(struct device *dev, \ + struct device_attribute *attr, \ + const char *buf, size_t count) \ + { \ + return store_sys_wmi(_cm, buf, count); \ + } \ + static struct device_attribute dev_attr_##_name = { \ + .attr = { \ + .name = __stringify(_name), \ + .mode = _mode }, \ + .show = show_##_name, \ + .store = store_##_name, \ + } + +EEEPC_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, EEEPC_WMI_DEVID_TOUCHPAD); +EEEPC_WMI_CREATE_DEVICE_ATTR(camera, 0644, EEEPC_WMI_DEVID_CAMERA); +EEEPC_WMI_CREATE_DEVICE_ATTR(cardr, 0644, EEEPC_WMI_DEVID_CARDREADER); + +static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int value; + struct acpi_buffer input = { (acpi_size)sizeof(value), &value }; + acpi_status status; + + if (!count || sscanf(buf, "%i", &value) != 1) + return -EINVAL; + if (value < 0 || value > 2) + return -EINVAL; + + status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, + 1, EEEPC_WMI_METHODID_CFVS, &input, NULL); + + if (ACPI_FAILURE(status)) + return -EIO; + else + 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, + NULL +}; + +static mode_t eeepc_sysfs_is_visible(struct kobject *kobj, + struct attribute *attr, + int idx) +{ + bool supported = true; + int devid = -1; + + if (attr == &dev_attr_camera.attr) + devid = EEEPC_WMI_DEVID_CAMERA; + else if (attr == &dev_attr_cardr.attr) + devid = EEEPC_WMI_DEVID_CARDREADER; + else if (attr == &dev_attr_touchpad.attr) + devid = EEEPC_WMI_DEVID_TOUCHPAD; + + if (devid != -1) + supported = eeepc_wmi_get_devstate_simple(devid) != -ENODEV; + + return supported ? attr->mode : 0; +} + +static struct attribute_group platform_attribute_group = { + .is_visible = eeepc_sysfs_is_visible, + .attrs = platform_attributes +}; + +static void eeepc_wmi_sysfs_exit(struct platform_device *device) +{ + sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); +} + +static int eeepc_wmi_sysfs_init(struct platform_device *device) +{ + return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); +} + +/* + * Platform device + */ +static int __init eeepc_wmi_platform_init(struct eeepc_wmi *eeepc) +{ + return eeepc_wmi_sysfs_init(eeepc->platform_device); +} + +static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc) +{ + eeepc_wmi_sysfs_exit(eeepc->platform_device); +} + +/* + * debugfs + */ +struct eeepc_wmi_debugfs_node { + struct eeepc_wmi *eeepc; + char *name; + int (*show)(struct seq_file *m, void *data); +}; + +static int show_dsts(struct seq_file *m, void *data) +{ + struct eeepc_wmi *eeepc = m->private; + acpi_status status; + u32 retval = -1; + + status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval); + + if (ACPI_FAILURE(status)) + return -EIO; + + seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval); + + return 0; +} + +static int show_devs(struct seq_file *m, void *data) +{ + struct eeepc_wmi *eeepc = m->private; + acpi_status status; + u32 retval = -1; + + status = eeepc_wmi_set_devstate(eeepc->debug.dev_id, + eeepc->debug.ctrl_param, &retval); + if (ACPI_FAILURE(status)) + return -EIO; + + seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id, + eeepc->debug.ctrl_param, retval); + + return 0; +} + +static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = { + { NULL, "devs", show_devs }, + { NULL, "dsts", show_dsts }, +}; + +static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file) +{ + struct eeepc_wmi_debugfs_node *node = inode->i_private; + + return single_open(file, node->show, node->eeepc); +} + +static const struct file_operations eeepc_wmi_debugfs_io_ops = { + .owner = THIS_MODULE, + .open = eeepc_wmi_debugfs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc) +{ + debugfs_remove_recursive(eeepc->debug.root); +} + +static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc) +{ + struct dentry *dent; + int i; + + eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL); + if (!eeepc->debug.root) { + pr_err("failed to create debugfs directory"); + goto error_debugfs; + } + + dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR, + eeepc->debug.root, &eeepc->debug.dev_id); + if (!dent) + goto error_debugfs; + + dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR, + eeepc->debug.root, &eeepc->debug.ctrl_param); + if (!dent) + goto error_debugfs; + + for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) { + struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i]; + + node->eeepc = eeepc; + dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, + eeepc->debug.root, node, + &eeepc_wmi_debugfs_io_ops); + if (!dent) { + pr_err("failed to create debug file: %s\n", node->name); + goto error_debugfs; + } + } + + return 0; + +error_debugfs: + eeepc_wmi_debugfs_exit(eeepc); + return -ENOMEM; +} + +/* + * WMI Driver + */ +static void eeepc_dmi_check(struct eeepc_wmi *eeepc) +{ + const char *model; + + model = dmi_get_system_info(DMI_PRODUCT_NAME); + if (!model) + return; + + /* + * Whitelist for wlan hotplug + * + * Eeepc 1000H needs the current hotplug code to handle + * Fn+F2 correctly. We may add other Eeepc here later, but + * it seems that most of the laptops supported by eeepc-wmi + * don't need to be on this list + */ + if (strcmp(model, "1000H") == 0) { + eeepc->hotplug_wireless = true; + pr_info("wlan hotplug enabled\n"); + } +} + +static int __init eeepc_wmi_add(struct platform_device *pdev) +{ + struct eeepc_wmi *eeepc; + acpi_status status; + int err; + + eeepc = kzalloc(sizeof(struct eeepc_wmi), GFP_KERNEL); + if (!eeepc) + return -ENOMEM; + + eeepc->platform_device = pdev; + platform_set_drvdata(eeepc->platform_device, eeepc); + + eeepc->hotplug_wireless = hotplug_wireless; + eeepc_dmi_check(eeepc); + + err = eeepc_wmi_platform_init(eeepc); + if (err) + goto fail_platform; + + err = eeepc_wmi_input_init(eeepc); + if (err) + goto fail_input; + + err = eeepc_wmi_led_init(eeepc); + if (err) + goto fail_leds; + + err = eeepc_wmi_rfkill_init(eeepc); + if (err) + goto fail_rfkill; + + if (!acpi_video_backlight_support()) { + err = eeepc_wmi_backlight_init(eeepc); + if (err && err != -ENODEV) + goto fail_backlight; + } else + pr_info("Backlight controlled by ACPI video driver\n"); + + status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, + eeepc_wmi_notify, eeepc); + if (ACPI_FAILURE(status)) { + pr_err("Unable to register notify handler - %d\n", + status); + err = -ENODEV; + goto fail_wmi_handler; + } + + err = eeepc_wmi_debugfs_init(eeepc); + if (err) + goto fail_debugfs; + + return 0; + +fail_debugfs: + wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); +fail_wmi_handler: + eeepc_wmi_backlight_exit(eeepc); +fail_backlight: + eeepc_wmi_rfkill_exit(eeepc); +fail_rfkill: + eeepc_wmi_led_exit(eeepc); +fail_leds: + eeepc_wmi_input_exit(eeepc); +fail_input: + eeepc_wmi_platform_exit(eeepc); +fail_platform: + kfree(eeepc); + return err; +} + +static int __exit eeepc_wmi_remove(struct platform_device *device) +{ + struct eeepc_wmi *eeepc; + + eeepc = platform_get_drvdata(device); + wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); + eeepc_wmi_backlight_exit(eeepc); + eeepc_wmi_input_exit(eeepc); + eeepc_wmi_led_exit(eeepc); + eeepc_wmi_rfkill_exit(eeepc); + eeepc_wmi_debugfs_exit(eeepc); + eeepc_wmi_platform_exit(eeepc); + + kfree(eeepc); + return 0; +} + +/* + * Platform driver - hibernate/resume callbacks + */ +static int eeepc_hotk_thaw(struct device *device) +{ + struct eeepc_wmi *eeepc = dev_get_drvdata(device); + + if (eeepc->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 = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); + eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_WLAN, wlan, NULL); + } + + return 0; +} + +static int eeepc_hotk_restore(struct device *device) +{ + struct eeepc_wmi *eeepc = dev_get_drvdata(device); + int bl; + + /* Refresh both wlan rfkill state and pci hotplug */ + if (eeepc->wlan_rfkill) + eeepc_rfkill_hotplug(eeepc); + + if (eeepc->bluetooth_rfkill) { + bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BLUETOOTH); + rfkill_set_sw_state(eeepc->bluetooth_rfkill, bl); + } + if (eeepc->wimax_rfkill) { + bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WIMAX); + rfkill_set_sw_state(eeepc->wimax_rfkill, bl); + } + if (eeepc->wwan3g_rfkill) { + bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WWAN3G); + rfkill_set_sw_state(eeepc->wwan3g_rfkill, bl); + } + + return 0; +} + +static const struct dev_pm_ops eeepc_pm_ops = { + .thaw = eeepc_hotk_thaw, + .restore = eeepc_hotk_restore, +}; + +static struct platform_driver platform_driver = { + .remove = __exit_p(eeepc_wmi_remove), + .driver = { + .name = EEEPC_WMI_FILE, + .owner = THIS_MODULE, + .pm = &eeepc_pm_ops, + }, +}; + +static acpi_status __init eeepc_wmi_parse_device(acpi_handle handle, u32 level, + void *context, void **retval) +{ + pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID); + *(bool *)context = true; + return AE_CTRL_TERMINATE; +} + +static int __init eeepc_wmi_check_atkd(void) +{ + acpi_status status; + bool found = false; + + status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, + &found, NULL); + + if (ACPI_FAILURE(status) || !found) + return 0; + return -1; +} + +static int __init eeepc_wmi_probe(struct platform_device *pdev) +{ + if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID) || + !wmi_has_guid(EEEPC_WMI_MGMT_GUID)) { + pr_warning("No known WMI GUID found\n"); + return -ENODEV; + } + + if (eeepc_wmi_check_atkd()) { + pr_warning("WMI device present, but legacy ATKD device is also " + "present and enabled."); + pr_warning("You probably booted with acpi_osi=\"Linux\" or " + "acpi_osi=\"!Windows 2009\""); + pr_warning("Can't load eeepc-wmi, use default acpi_osi " + "(preferred) or eeepc-laptop"); + return -ENODEV; + } + + return eeepc_wmi_add(pdev); +} + +static struct platform_device *platform_device; + +static int __init eeepc_wmi_init(void) +{ + platform_device = platform_create_bundle(&platform_driver, + eeepc_wmi_probe, + NULL, 0, NULL, 0); + if (IS_ERR(platform_device)) + return PTR_ERR(platform_device); + return 0; +} + +static void __exit eeepc_wmi_exit(void) +{ + platform_device_unregister(platform_device); + platform_driver_unregister(&platform_driver); +} + +module_init(eeepc_wmi_init); +module_exit(eeepc_wmi_exit); diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c deleted file mode 100644 index d399775..0000000 --- a/drivers/platform/x86/eeepc-wmi.c +++ /dev/null @@ -1,1454 +0,0 @@ -/* - * Eee PC WMI hotkey driver - * - * Copyright(C) 2010 Intel Corporation. - * Copyright(C) 2010 Corentin Chary - * - * Portions based on wistron_btns.c: - * Copyright (C) 2005 Miloslav Trmac - * Copyright (C) 2005 Bernhard Rosenkraenzer - * Copyright (C) 2005 Dmitry Torokhov - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define EEEPC_WMI_FILE "eeepc-wmi" - -MODULE_AUTHOR("Yong Wang "); -MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver"); -MODULE_LICENSE("GPL"); - -#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */ - -#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000" -#define EEEPC_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66" - -MODULE_ALIAS("wmi:"EEEPC_WMI_EVENT_GUID); -MODULE_ALIAS("wmi:"EEEPC_WMI_MGMT_GUID); - -#define NOTIFY_BRNUP_MIN 0x11 -#define NOTIFY_BRNUP_MAX 0x1f -#define NOTIFY_BRNDOWN_MIN 0x20 -#define NOTIFY_BRNDOWN_MAX 0x2e - -/* WMI Methods */ -#define EEEPC_WMI_METHODID_DSTS 0x53544344 -#define EEEPC_WMI_METHODID_DEVS 0x53564544 -#define EEEPC_WMI_METHODID_CFVS 0x53564643 - -/* Wireless */ -#define EEEPC_WMI_DEVID_WLAN 0x00010011 -#define EEEPC_WMI_DEVID_BLUETOOTH 0x00010013 -#define EEEPC_WMI_DEVID_WIMAX 0x00010017 -#define EEEPC_WMI_DEVID_WWAN3G 0x00010019 - -/* Backlight and Brightness */ -#define EEEPC_WMI_DEVID_BACKLIGHT 0x00050011 -#define EEEPC_WMI_DEVID_BRIGHTNESS 0x00050012 - -/* Misc */ -#define EEEPC_WMI_DEVID_CAMERA 0x00060013 - -/* Storage */ -#define EEEPC_WMI_DEVID_CARDREADER 0x00080013 - -/* Input */ -#define EEEPC_WMI_DEVID_TOUCHPAD 0x00100011 -#define EEEPC_WMI_DEVID_TOUCHPAD_LED 0x00100012 - -/* DSTS masks */ -#define EEEPC_WMI_DSTS_STATUS_BIT 0x00000001 -#define EEEPC_WMI_DSTS_PRESENCE_BIT 0x00010000 -#define EEEPC_WMI_DSTS_BRIGHTNESS_MASK 0x000000FF -#define EEEPC_WMI_DSTS_MAX_BRIGTH_MASK 0x0000FF00 - -static bool hotplug_wireless; - -module_param(hotplug_wireless, bool, 0444); -MODULE_PARM_DESC(hotplug_wireless, - "Enable hotplug for wireless device. " - "If your laptop needs that, please report to " - "acpi4asus-user@lists.sourceforge.net."); - -static const struct key_entry eeepc_wmi_keymap[] = { - /* Sleep already handled via generic ACPI code */ - { KE_IGNORE, NOTIFY_BRNDOWN_MIN, { KEY_BRIGHTNESSDOWN } }, - { KE_IGNORE, NOTIFY_BRNUP_MIN, { KEY_BRIGHTNESSUP } }, - { KE_KEY, 0x30, { KEY_VOLUMEUP } }, - { KE_KEY, 0x31, { KEY_VOLUMEDOWN } }, - { KE_KEY, 0x32, { KEY_MUTE } }, - { KE_KEY, 0x5c, { KEY_F15 } }, /* Power Gear key */ - { KE_KEY, 0x5d, { KEY_WLAN } }, - { KE_KEY, 0x6b, { KEY_F13 } }, /* Disable Touchpad */ - { KE_KEY, 0x82, { KEY_CAMERA } }, - { KE_KEY, 0x83, { KEY_CAMERA_ZOOMIN } }, - { KE_KEY, 0x88, { KEY_WLAN } }, - { KE_KEY, 0xcc, { KEY_SWITCHVIDEOMODE } }, - { KE_KEY, 0xe0, { KEY_PROG1 } }, /* Task Manager */ - { KE_KEY, 0xe1, { KEY_F14 } }, /* Change Resolution */ - { KE_KEY, 0xe9, { KEY_BRIGHTNESS_ZERO } }, - { KE_KEY, 0xeb, { KEY_CAMERA_ZOOMOUT } }, - { KE_KEY, 0xec, { KEY_CAMERA_UP } }, - { KE_KEY, 0xed, { KEY_CAMERA_DOWN } }, - { KE_KEY, 0xee, { KEY_CAMERA_LEFT } }, - { KE_KEY, 0xef, { KEY_CAMERA_RIGHT } }, - { KE_END, 0}, -}; - -struct bios_args { - u32 dev_id; - u32 ctrl_param; -}; - -/* - * eeepc-wmi/ - debugfs root directory - * dev_id - current dev_id - * ctrl_param - current ctrl_param - * devs - call DEVS(dev_id, ctrl_param) and print result - * dsts - call DSTS(dev_id) and print result - */ -struct eeepc_wmi_debug { - struct dentry *root; - u32 dev_id; - u32 ctrl_param; -}; - -struct eeepc_wmi { - bool hotplug_wireless; - - struct input_dev *inputdev; - struct backlight_device *backlight_device; - struct platform_device *platform_device; - - struct led_classdev tpd_led; - int tpd_led_wk; - struct workqueue_struct *led_workqueue; - struct work_struct tpd_led_work; - - struct rfkill *wlan_rfkill; - struct rfkill *bluetooth_rfkill; - struct rfkill *wimax_rfkill; - struct rfkill *wwan3g_rfkill; - - struct hotplug_slot *hotplug_slot; - struct mutex hotplug_lock; - struct mutex wmi_lock; - struct workqueue_struct *hotplug_workqueue; - struct work_struct hotplug_work; - - struct eeepc_wmi_debug debug; -}; - -static int eeepc_wmi_input_init(struct eeepc_wmi *eeepc) -{ - int err; - - eeepc->inputdev = input_allocate_device(); - if (!eeepc->inputdev) - return -ENOMEM; - - eeepc->inputdev->name = "Eee PC WMI hotkeys"; - eeepc->inputdev->phys = EEEPC_WMI_FILE "/input0"; - eeepc->inputdev->id.bustype = BUS_HOST; - eeepc->inputdev->dev.parent = &eeepc->platform_device->dev; - - err = sparse_keymap_setup(eeepc->inputdev, eeepc_wmi_keymap, NULL); - if (err) - goto err_free_dev; - - err = input_register_device(eeepc->inputdev); - if (err) - goto err_free_keymap; - - return 0; - -err_free_keymap: - sparse_keymap_free(eeepc->inputdev); -err_free_dev: - input_free_device(eeepc->inputdev); - return err; -} - -static void eeepc_wmi_input_exit(struct eeepc_wmi *eeepc) -{ - if (eeepc->inputdev) { - sparse_keymap_free(eeepc->inputdev); - input_unregister_device(eeepc->inputdev); - } - - eeepc->inputdev = NULL; -} - -static acpi_status eeepc_wmi_get_devstate(u32 dev_id, u32 *retval) -{ - struct acpi_buffer input = { (acpi_size)sizeof(u32), &dev_id }; - struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - acpi_status status; - u32 tmp; - - status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, - 1, EEEPC_WMI_METHODID_DSTS, - &input, &output); - - if (ACPI_FAILURE(status)) - return status; - - 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); - - return status; - -} - -static acpi_status eeepc_wmi_set_devstate(u32 dev_id, u32 ctrl_param, - u32 *retval) -{ - struct bios_args args = { - .dev_id = dev_id, - .ctrl_param = ctrl_param, - }; - struct acpi_buffer input = { (acpi_size)sizeof(args), &args }; - acpi_status status; - - if (!retval) { - status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, - EEEPC_WMI_METHODID_DEVS, - &input, NULL); - } else { - struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - u32 tmp; - - status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, 1, - EEEPC_WMI_METHODID_DEVS, - &input, &output); - - if (ACPI_FAILURE(status)) - return status; - - obj = (union acpi_object *)output.pointer; - if (obj && obj->type == ACPI_TYPE_INTEGER) - tmp = (u32)obj->integer.value; - else - tmp = 0; - - *retval = tmp; - - kfree(obj); - } - - return status; -} - -/* Helper for special devices with magic return codes */ -static int eeepc_wmi_get_devstate_bits(u32 dev_id, u32 mask) -{ - u32 retval = 0; - acpi_status status; - - status = eeepc_wmi_get_devstate(dev_id, &retval); - - if (ACPI_FAILURE(status)) - return -EINVAL; - - if (!(retval & EEEPC_WMI_DSTS_PRESENCE_BIT)) - return -ENODEV; - - return retval & mask; -} - -static int eeepc_wmi_get_devstate_simple(u32 dev_id) -{ - return eeepc_wmi_get_devstate_bits(dev_id, EEEPC_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 Eeepc 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 eeepc_wmi *eeepc; - - eeepc = container_of(work, struct eeepc_wmi, tpd_led_work); - - ctrl_param = eeepc->tpd_led_wk; - eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_TOUCHPAD_LED, ctrl_param, NULL); -} - -static void tpd_led_set(struct led_classdev *led_cdev, - enum led_brightness value) -{ - struct eeepc_wmi *eeepc; - - eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); - - eeepc->tpd_led_wk = !!value; - queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work); -} - -static int read_tpd_led_state(struct eeepc_wmi *eeepc) -{ - return eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_TOUCHPAD_LED); -} - -static enum led_brightness tpd_led_get(struct led_classdev *led_cdev) -{ - struct eeepc_wmi *eeepc; - - eeepc = container_of(led_cdev, struct eeepc_wmi, tpd_led); - - return read_tpd_led_state(eeepc); -} - -static int eeepc_wmi_led_init(struct eeepc_wmi *eeepc) -{ - int rv; - - if (read_tpd_led_state(eeepc) < 0) - return 0; - - eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue"); - if (!eeepc->led_workqueue) - return -ENOMEM; - INIT_WORK(&eeepc->tpd_led_work, tpd_led_update); - - eeepc->tpd_led.name = "eeepc::touchpad"; - eeepc->tpd_led.brightness_set = tpd_led_set; - eeepc->tpd_led.brightness_get = tpd_led_get; - eeepc->tpd_led.max_brightness = 1; - - rv = led_classdev_register(&eeepc->platform_device->dev, - &eeepc->tpd_led); - if (rv) { - destroy_workqueue(eeepc->led_workqueue); - return rv; - } - - return 0; -} - -static void eeepc_wmi_led_exit(struct eeepc_wmi *eeepc) -{ - if (eeepc->tpd_led.dev) - led_classdev_unregister(&eeepc->tpd_led); - if (eeepc->led_workqueue) - destroy_workqueue(eeepc->led_workqueue); -} - -/* - * PCI hotplug (for wlan rfkill) - */ -static bool eeepc_wlan_rfkill_blocked(struct eeepc_wmi *eeepc) -{ - int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); - - if (result < 0) - return false; - return !result; -} - -static void eeepc_rfkill_hotplug(struct eeepc_wmi *eeepc) -{ - struct pci_dev *dev; - struct pci_bus *bus; - bool blocked; - bool absent; - u32 l; - - mutex_lock(&eeepc->wmi_lock); - blocked = eeepc_wlan_rfkill_blocked(eeepc); - mutex_unlock(&eeepc->wmi_lock); - - mutex_lock(&eeepc->hotplug_lock); - - if (eeepc->wlan_rfkill) - rfkill_set_sw_state(eeepc->wlan_rfkill, blocked); - - if (eeepc->hotplug_slot) { - bus = pci_find_bus(0, 1); - if (!bus) { - pr_warning("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_warning("BIOS says wireless lan is %s, " - "but the pci device is %s\n", - blocked ? "blocked" : "unblocked", - absent ? "absent" : "present"); - pr_warning("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_remove_bus_device(dev); - pci_dev_put(dev); - } - } - } - -out_unlock: - mutex_unlock(&eeepc->hotplug_lock); -} - -static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data) -{ - struct eeepc_wmi *eeepc = data; - - if (event != ACPI_NOTIFY_BUS_CHECK) - return; - - /* - * We can't call directly eeepc_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 eeepc_rfkill_hotplug - * call later, in a safer context. - */ - queue_work(eeepc->hotplug_workqueue, &eeepc->hotplug_work); -} - -static int eeepc_register_rfkill_notifier(struct eeepc_wmi *eeepc, - 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, - eeepc_rfkill_notify, - eeepc); - if (ACPI_FAILURE(status)) - pr_warning("Failed to register notify on %s\n", node); - } else - return -ENODEV; - - return 0; -} - -static void eeepc_unregister_rfkill_notifier(struct eeepc_wmi *eeepc, - 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, - eeepc_rfkill_notify); - if (ACPI_FAILURE(status)) - pr_err("Error removing rfkill notify handler %s\n", - node); - } -} - -static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot, - u8 *value) -{ - int result = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); - - if (result < 0) - return result; - - *value = !!result; - return 0; -} - -static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot) -{ - kfree(hotplug_slot->info); - kfree(hotplug_slot); -} - -static struct hotplug_slot_ops eeepc_hotplug_slot_ops = { - .owner = THIS_MODULE, - .get_adapter_status = eeepc_get_adapter_status, - .get_power_status = eeepc_get_adapter_status, -}; - -static void eeepc_hotplug_work(struct work_struct *work) -{ - struct eeepc_wmi *eeepc; - - eeepc = container_of(work, struct eeepc_wmi, hotplug_work); - eeepc_rfkill_hotplug(eeepc); -} - -static int eeepc_setup_pci_hotplug(struct eeepc_wmi *eeepc) -{ - 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; - } - - eeepc->hotplug_workqueue = - create_singlethread_workqueue("hotplug_workqueue"); - if (!eeepc->hotplug_workqueue) - goto error_workqueue; - - INIT_WORK(&eeepc->hotplug_work, eeepc_hotplug_work); - - eeepc->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL); - if (!eeepc->hotplug_slot) - goto error_slot; - - eeepc->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info), - GFP_KERNEL); - if (!eeepc->hotplug_slot->info) - goto error_info; - - eeepc->hotplug_slot->private = eeepc; - eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug; - eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops; - eeepc_get_adapter_status(eeepc->hotplug_slot, - &eeepc->hotplug_slot->info->adapter_status); - - ret = pci_hp_register(eeepc->hotplug_slot, bus, 0, "eeepc-wifi"); - if (ret) { - pr_err("Unable to register hotplug slot - %d\n", ret); - goto error_register; - } - - return 0; - -error_register: - kfree(eeepc->hotplug_slot->info); -error_info: - kfree(eeepc->hotplug_slot); - eeepc->hotplug_slot = NULL; -error_slot: - destroy_workqueue(eeepc->hotplug_workqueue); -error_workqueue: - return ret; -} - -/* - * Rfkill devices - */ -static int eeepc_rfkill_set(void *data, bool blocked) -{ - int dev_id = (unsigned long)data; - u32 ctrl_param = !blocked; - acpi_status status; - - status = eeepc_wmi_set_devstate(dev_id, ctrl_param, NULL); - - if (ACPI_FAILURE(status)) - return -EIO; - - return 0; -} - -static void eeepc_rfkill_query(struct rfkill *rfkill, void *data) -{ - int dev_id = (unsigned long)data; - int result; - - result = eeepc_wmi_get_devstate_simple(dev_id); - - if (result < 0) - return ; - - rfkill_set_sw_state(rfkill, !result); -} - -static int eeepc_rfkill_wlan_set(void *data, bool blocked) -{ - struct eeepc_wmi *eeepc = data; - int ret; - - /* - * This handler is enabled only if hotplug is enabled. - * In this case, the eeepc_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(&eeepc->wmi_lock); - ret = eeepc_rfkill_set((void *)(long)EEEPC_WMI_DEVID_WLAN, blocked); - mutex_unlock(&eeepc->wmi_lock); - return ret; -} - -static void eeepc_rfkill_wlan_query(struct rfkill *rfkill, void *data) -{ - eeepc_rfkill_query(rfkill, (void *)(long)EEEPC_WMI_DEVID_WLAN); -} - -static const struct rfkill_ops eeepc_rfkill_wlan_ops = { - .set_block = eeepc_rfkill_wlan_set, - .query = eeepc_rfkill_wlan_query, -}; - -static const struct rfkill_ops eeepc_rfkill_ops = { - .set_block = eeepc_rfkill_set, - .query = eeepc_rfkill_query, -}; - -static int eeepc_new_rfkill(struct eeepc_wmi *eeepc, - struct rfkill **rfkill, - const char *name, - enum rfkill_type type, int dev_id) -{ - int result = eeepc_wmi_get_devstate_simple(dev_id); - - if (result < 0) - return result; - - if (dev_id == EEEPC_WMI_DEVID_WLAN && eeepc->hotplug_wireless) - *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, - &eeepc_rfkill_wlan_ops, eeepc); - else - *rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type, - &eeepc_rfkill_ops, (void *)(long)dev_id); - - if (!*rfkill) - return -EINVAL; - - rfkill_init_sw_state(*rfkill, !result); - result = rfkill_register(*rfkill); - if (result) { - rfkill_destroy(*rfkill); - *rfkill = NULL; - return result; - } - return 0; -} - -static void eeepc_wmi_rfkill_exit(struct eeepc_wmi *eeepc) -{ - eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); - eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); - eeepc_unregister_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); - if (eeepc->wlan_rfkill) { - rfkill_unregister(eeepc->wlan_rfkill); - rfkill_destroy(eeepc->wlan_rfkill); - eeepc->wlan_rfkill = NULL; - } - /* - * Refresh pci hotplug in case the rfkill state was changed after - * eeepc_unregister_rfkill_notifier() - */ - eeepc_rfkill_hotplug(eeepc); - if (eeepc->hotplug_slot) - pci_hp_deregister(eeepc->hotplug_slot); - if (eeepc->hotplug_workqueue) - destroy_workqueue(eeepc->hotplug_workqueue); - - if (eeepc->bluetooth_rfkill) { - rfkill_unregister(eeepc->bluetooth_rfkill); - rfkill_destroy(eeepc->bluetooth_rfkill); - eeepc->bluetooth_rfkill = NULL; - } - if (eeepc->wimax_rfkill) { - rfkill_unregister(eeepc->wimax_rfkill); - rfkill_destroy(eeepc->wimax_rfkill); - eeepc->wimax_rfkill = NULL; - } - if (eeepc->wwan3g_rfkill) { - rfkill_unregister(eeepc->wwan3g_rfkill); - rfkill_destroy(eeepc->wwan3g_rfkill); - eeepc->wwan3g_rfkill = NULL; - } -} - -static int eeepc_wmi_rfkill_init(struct eeepc_wmi *eeepc) -{ - int result = 0; - - mutex_init(&eeepc->hotplug_lock); - mutex_init(&eeepc->wmi_lock); - - result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill, - "eeepc-wlan", RFKILL_TYPE_WLAN, - EEEPC_WMI_DEVID_WLAN); - - if (result && result != -ENODEV) - goto exit; - - result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill, - "eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH, - EEEPC_WMI_DEVID_BLUETOOTH); - - if (result && result != -ENODEV) - goto exit; - - result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill, - "eeepc-wimax", RFKILL_TYPE_WIMAX, - EEEPC_WMI_DEVID_WIMAX); - - if (result && result != -ENODEV) - goto exit; - - result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill, - "eeepc-wwan3g", RFKILL_TYPE_WWAN, - EEEPC_WMI_DEVID_WWAN3G); - - if (result && result != -ENODEV) - goto exit; - - if (!eeepc->hotplug_wireless) - goto exit; - - result = eeepc_setup_pci_hotplug(eeepc); - /* - * If we get -EBUSY then something else is handling the PCI hotplug - - * don't fail in this case - */ - if (result == -EBUSY) - result = 0; - - eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P5"); - eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P6"); - eeepc_register_rfkill_notifier(eeepc, "\\_SB.PCI0.P0P7"); - /* - * Refresh pci hotplug in case the rfkill state was changed during - * setup. - */ - eeepc_rfkill_hotplug(eeepc); - -exit: - if (result && result != -ENODEV) - eeepc_wmi_rfkill_exit(eeepc); - - if (result == -ENODEV) - result = 0; - - return result; -} - -/* - * Backlight - */ -static int read_backlight_power(void) -{ - int ret = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BACKLIGHT); - - if (ret < 0) - return ret; - - return ret ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; -} - -static int read_brightness(struct backlight_device *bd) -{ - u32 retval; - acpi_status status; - - status = eeepc_wmi_get_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, &retval); - - if (ACPI_FAILURE(status)) - return -EIO; - else - return retval & EEEPC_WMI_DSTS_BRIGHTNESS_MASK; -} - -static int update_bl_status(struct backlight_device *bd) -{ - u32 ctrl_param; - acpi_status status; - int power; - - ctrl_param = bd->props.brightness; - - status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BRIGHTNESS, - ctrl_param, NULL); - - if (ACPI_FAILURE(status)) - return -EIO; - - power = read_backlight_power(); - if (power != -ENODEV && bd->props.power != power) { - ctrl_param = !!(bd->props.power == FB_BLANK_UNBLANK); - status = eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_BACKLIGHT, - ctrl_param, NULL); - - if (ACPI_FAILURE(status)) - return -EIO; - } - return 0; -} - -static const struct backlight_ops eeepc_wmi_bl_ops = { - .get_brightness = read_brightness, - .update_status = update_bl_status, -}; - -static int eeepc_wmi_backlight_notify(struct eeepc_wmi *eeepc, int code) -{ - struct backlight_device *bd = eeepc->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 eeepc_wmi_backlight_init(struct eeepc_wmi *eeepc) -{ - struct backlight_device *bd; - struct backlight_properties props; - int max; - int power; - - max = eeepc_wmi_get_devstate_bits(EEEPC_WMI_DEVID_BRIGHTNESS, - EEEPC_WMI_DSTS_MAX_BRIGTH_MASK); - power = read_backlight_power(); - - if (max < 0 && power < 0) { - /* Try to keep the original error */ - if (max == -ENODEV && power == -ENODEV) - return -ENODEV; - if (max != -ENODEV) - return max; - else - return power; - } - if (max == -ENODEV) - max = 0; - if (power == -ENODEV) - power = FB_BLANK_UNBLANK; - - memset(&props, 0, sizeof(struct backlight_properties)); - props.max_brightness = max; - bd = backlight_device_register(EEEPC_WMI_FILE, - &eeepc->platform_device->dev, eeepc, - &eeepc_wmi_bl_ops, &props); - if (IS_ERR(bd)) { - pr_err("Could not register backlight device\n"); - return PTR_ERR(bd); - } - - eeepc->backlight_device = bd; - - bd->props.brightness = read_brightness(bd); - bd->props.power = power; - backlight_update_status(bd); - - return 0; -} - -static void eeepc_wmi_backlight_exit(struct eeepc_wmi *eeepc) -{ - if (eeepc->backlight_device) - backlight_device_unregister(eeepc->backlight_device); - - eeepc->backlight_device = NULL; -} - -static void eeepc_wmi_notify(u32 value, void *context) -{ - struct eeepc_wmi *eeepc = context; - struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - acpi_status status; - int code; - int orig_code; - - 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) { - code = obj->integer.value; - orig_code = code; - - if (code >= NOTIFY_BRNUP_MIN && code <= NOTIFY_BRNUP_MAX) - code = NOTIFY_BRNUP_MIN; - else if (code >= NOTIFY_BRNDOWN_MIN && - code <= NOTIFY_BRNDOWN_MAX) - code = NOTIFY_BRNDOWN_MIN; - - if (code == NOTIFY_BRNUP_MIN || code == NOTIFY_BRNDOWN_MIN) { - if (!acpi_video_backlight_support()) - eeepc_wmi_backlight_notify(eeepc, orig_code); - } - - if (!sparse_keymap_report_event(eeepc->inputdev, - code, 1, true)) - pr_info("Unknown key %x pressed\n", code); - } - - 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(int devid, const char *buf, size_t count) -{ - acpi_status status; - u32 retval; - int rv, value; - - value = eeepc_wmi_get_devstate_simple(devid); - if (value == -ENODEV) /* Check device presence */ - return value; - - rv = parse_arg(buf, count, &value); - status = eeepc_wmi_set_devstate(devid, value, &retval); - - if (ACPI_FAILURE(status)) - return -EIO; - return rv; -} - -static ssize_t show_sys_wmi(int devid, char *buf) -{ - int value = eeepc_wmi_get_devstate_simple(devid); - - if (value < 0) - return value; - - return sprintf(buf, "%d\n", value); -} - -#define EEEPC_WMI_CREATE_DEVICE_ATTR(_name, _mode, _cm) \ - static ssize_t show_##_name(struct device *dev, \ - struct device_attribute *attr, \ - char *buf) \ - { \ - return show_sys_wmi(_cm, buf); \ - } \ - static ssize_t store_##_name(struct device *dev, \ - struct device_attribute *attr, \ - const char *buf, size_t count) \ - { \ - return store_sys_wmi(_cm, buf, count); \ - } \ - static struct device_attribute dev_attr_##_name = { \ - .attr = { \ - .name = __stringify(_name), \ - .mode = _mode }, \ - .show = show_##_name, \ - .store = store_##_name, \ - } - -EEEPC_WMI_CREATE_DEVICE_ATTR(touchpad, 0644, EEEPC_WMI_DEVID_TOUCHPAD); -EEEPC_WMI_CREATE_DEVICE_ATTR(camera, 0644, EEEPC_WMI_DEVID_CAMERA); -EEEPC_WMI_CREATE_DEVICE_ATTR(cardr, 0644, EEEPC_WMI_DEVID_CARDREADER); - -static ssize_t store_cpufv(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int value; - struct acpi_buffer input = { (acpi_size)sizeof(value), &value }; - acpi_status status; - - if (!count || sscanf(buf, "%i", &value) != 1) - return -EINVAL; - if (value < 0 || value > 2) - return -EINVAL; - - status = wmi_evaluate_method(EEEPC_WMI_MGMT_GUID, - 1, EEEPC_WMI_METHODID_CFVS, &input, NULL); - - if (ACPI_FAILURE(status)) - return -EIO; - else - 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, - NULL -}; - -static mode_t eeepc_sysfs_is_visible(struct kobject *kobj, - struct attribute *attr, - int idx) -{ - bool supported = true; - int devid = -1; - - if (attr == &dev_attr_camera.attr) - devid = EEEPC_WMI_DEVID_CAMERA; - else if (attr == &dev_attr_cardr.attr) - devid = EEEPC_WMI_DEVID_CARDREADER; - else if (attr == &dev_attr_touchpad.attr) - devid = EEEPC_WMI_DEVID_TOUCHPAD; - - if (devid != -1) - supported = eeepc_wmi_get_devstate_simple(devid) != -ENODEV; - - return supported ? attr->mode : 0; -} - -static struct attribute_group platform_attribute_group = { - .is_visible = eeepc_sysfs_is_visible, - .attrs = platform_attributes -}; - -static void eeepc_wmi_sysfs_exit(struct platform_device *device) -{ - sysfs_remove_group(&device->dev.kobj, &platform_attribute_group); -} - -static int eeepc_wmi_sysfs_init(struct platform_device *device) -{ - return sysfs_create_group(&device->dev.kobj, &platform_attribute_group); -} - -/* - * Platform device - */ -static int __init eeepc_wmi_platform_init(struct eeepc_wmi *eeepc) -{ - return eeepc_wmi_sysfs_init(eeepc->platform_device); -} - -static void eeepc_wmi_platform_exit(struct eeepc_wmi *eeepc) -{ - eeepc_wmi_sysfs_exit(eeepc->platform_device); -} - -/* - * debugfs - */ -struct eeepc_wmi_debugfs_node { - struct eeepc_wmi *eeepc; - char *name; - int (*show)(struct seq_file *m, void *data); -}; - -static int show_dsts(struct seq_file *m, void *data) -{ - struct eeepc_wmi *eeepc = m->private; - acpi_status status; - u32 retval = -1; - - status = eeepc_wmi_get_devstate(eeepc->debug.dev_id, &retval); - - if (ACPI_FAILURE(status)) - return -EIO; - - seq_printf(m, "DSTS(%x) = %x\n", eeepc->debug.dev_id, retval); - - return 0; -} - -static int show_devs(struct seq_file *m, void *data) -{ - struct eeepc_wmi *eeepc = m->private; - acpi_status status; - u32 retval = -1; - - status = eeepc_wmi_set_devstate(eeepc->debug.dev_id, - eeepc->debug.ctrl_param, &retval); - if (ACPI_FAILURE(status)) - return -EIO; - - seq_printf(m, "DEVS(%x, %x) = %x\n", eeepc->debug.dev_id, - eeepc->debug.ctrl_param, retval); - - return 0; -} - -static struct eeepc_wmi_debugfs_node eeepc_wmi_debug_files[] = { - { NULL, "devs", show_devs }, - { NULL, "dsts", show_dsts }, -}; - -static int eeepc_wmi_debugfs_open(struct inode *inode, struct file *file) -{ - struct eeepc_wmi_debugfs_node *node = inode->i_private; - - return single_open(file, node->show, node->eeepc); -} - -static const struct file_operations eeepc_wmi_debugfs_io_ops = { - .owner = THIS_MODULE, - .open = eeepc_wmi_debugfs_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static void eeepc_wmi_debugfs_exit(struct eeepc_wmi *eeepc) -{ - debugfs_remove_recursive(eeepc->debug.root); -} - -static int eeepc_wmi_debugfs_init(struct eeepc_wmi *eeepc) -{ - struct dentry *dent; - int i; - - eeepc->debug.root = debugfs_create_dir(EEEPC_WMI_FILE, NULL); - if (!eeepc->debug.root) { - pr_err("failed to create debugfs directory"); - goto error_debugfs; - } - - dent = debugfs_create_x32("dev_id", S_IRUGO|S_IWUSR, - eeepc->debug.root, &eeepc->debug.dev_id); - if (!dent) - goto error_debugfs; - - dent = debugfs_create_x32("ctrl_param", S_IRUGO|S_IWUSR, - eeepc->debug.root, &eeepc->debug.ctrl_param); - if (!dent) - goto error_debugfs; - - for (i = 0; i < ARRAY_SIZE(eeepc_wmi_debug_files); i++) { - struct eeepc_wmi_debugfs_node *node = &eeepc_wmi_debug_files[i]; - - node->eeepc = eeepc; - dent = debugfs_create_file(node->name, S_IFREG | S_IRUGO, - eeepc->debug.root, node, - &eeepc_wmi_debugfs_io_ops); - if (!dent) { - pr_err("failed to create debug file: %s\n", node->name); - goto error_debugfs; - } - } - - return 0; - -error_debugfs: - eeepc_wmi_debugfs_exit(eeepc); - return -ENOMEM; -} - -/* - * WMI Driver - */ -static void eeepc_dmi_check(struct eeepc_wmi *eeepc) -{ - const char *model; - - model = dmi_get_system_info(DMI_PRODUCT_NAME); - if (!model) - return; - - /* - * Whitelist for wlan hotplug - * - * Eeepc 1000H needs the current hotplug code to handle - * Fn+F2 correctly. We may add other Eeepc here later, but - * it seems that most of the laptops supported by eeepc-wmi - * don't need to be on this list - */ - if (strcmp(model, "1000H") == 0) { - eeepc->hotplug_wireless = true; - pr_info("wlan hotplug enabled\n"); - } -} - -static int __init eeepc_wmi_add(struct platform_device *pdev) -{ - struct eeepc_wmi *eeepc; - acpi_status status; - int err; - - eeepc = kzalloc(sizeof(struct eeepc_wmi), GFP_KERNEL); - if (!eeepc) - return -ENOMEM; - - eeepc->platform_device = pdev; - platform_set_drvdata(eeepc->platform_device, eeepc); - - eeepc->hotplug_wireless = hotplug_wireless; - eeepc_dmi_check(eeepc); - - err = eeepc_wmi_platform_init(eeepc); - if (err) - goto fail_platform; - - err = eeepc_wmi_input_init(eeepc); - if (err) - goto fail_input; - - err = eeepc_wmi_led_init(eeepc); - if (err) - goto fail_leds; - - err = eeepc_wmi_rfkill_init(eeepc); - if (err) - goto fail_rfkill; - - if (!acpi_video_backlight_support()) { - err = eeepc_wmi_backlight_init(eeepc); - if (err && err != -ENODEV) - goto fail_backlight; - } else - pr_info("Backlight controlled by ACPI video driver\n"); - - status = wmi_install_notify_handler(EEEPC_WMI_EVENT_GUID, - eeepc_wmi_notify, eeepc); - if (ACPI_FAILURE(status)) { - pr_err("Unable to register notify handler - %d\n", - status); - err = -ENODEV; - goto fail_wmi_handler; - } - - err = eeepc_wmi_debugfs_init(eeepc); - if (err) - goto fail_debugfs; - - return 0; - -fail_debugfs: - wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); -fail_wmi_handler: - eeepc_wmi_backlight_exit(eeepc); -fail_backlight: - eeepc_wmi_rfkill_exit(eeepc); -fail_rfkill: - eeepc_wmi_led_exit(eeepc); -fail_leds: - eeepc_wmi_input_exit(eeepc); -fail_input: - eeepc_wmi_platform_exit(eeepc); -fail_platform: - kfree(eeepc); - return err; -} - -static int __exit eeepc_wmi_remove(struct platform_device *device) -{ - struct eeepc_wmi *eeepc; - - eeepc = platform_get_drvdata(device); - wmi_remove_notify_handler(EEEPC_WMI_EVENT_GUID); - eeepc_wmi_backlight_exit(eeepc); - eeepc_wmi_input_exit(eeepc); - eeepc_wmi_led_exit(eeepc); - eeepc_wmi_rfkill_exit(eeepc); - eeepc_wmi_debugfs_exit(eeepc); - eeepc_wmi_platform_exit(eeepc); - - kfree(eeepc); - return 0; -} - -/* - * Platform driver - hibernate/resume callbacks - */ -static int eeepc_hotk_thaw(struct device *device) -{ - struct eeepc_wmi *eeepc = dev_get_drvdata(device); - - if (eeepc->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 = eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WLAN); - eeepc_wmi_set_devstate(EEEPC_WMI_DEVID_WLAN, wlan, NULL); - } - - return 0; -} - -static int eeepc_hotk_restore(struct device *device) -{ - struct eeepc_wmi *eeepc = dev_get_drvdata(device); - int bl; - - /* Refresh both wlan rfkill state and pci hotplug */ - if (eeepc->wlan_rfkill) - eeepc_rfkill_hotplug(eeepc); - - if (eeepc->bluetooth_rfkill) { - bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_BLUETOOTH); - rfkill_set_sw_state(eeepc->bluetooth_rfkill, bl); - } - if (eeepc->wimax_rfkill) { - bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WIMAX); - rfkill_set_sw_state(eeepc->wimax_rfkill, bl); - } - if (eeepc->wwan3g_rfkill) { - bl = !eeepc_wmi_get_devstate_simple(EEEPC_WMI_DEVID_WWAN3G); - rfkill_set_sw_state(eeepc->wwan3g_rfkill, bl); - } - - return 0; -} - -static const struct dev_pm_ops eeepc_pm_ops = { - .thaw = eeepc_hotk_thaw, - .restore = eeepc_hotk_restore, -}; - -static struct platform_driver platform_driver = { - .remove = __exit_p(eeepc_wmi_remove), - .driver = { - .name = EEEPC_WMI_FILE, - .owner = THIS_MODULE, - .pm = &eeepc_pm_ops, - }, -}; - -static acpi_status __init eeepc_wmi_parse_device(acpi_handle handle, u32 level, - void *context, void **retval) -{ - pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID); - *(bool *)context = true; - return AE_CTRL_TERMINATE; -} - -static int __init eeepc_wmi_check_atkd(void) -{ - acpi_status status; - bool found = false; - - status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device, - &found, NULL); - - if (ACPI_FAILURE(status) || !found) - return 0; - return -1; -} - -static int __init eeepc_wmi_probe(struct platform_device *pdev) -{ - if (!wmi_has_guid(EEEPC_WMI_EVENT_GUID) || - !wmi_has_guid(EEEPC_WMI_MGMT_GUID)) { - pr_warning("No known WMI GUID found\n"); - return -ENODEV; - } - - if (eeepc_wmi_check_atkd()) { - pr_warning("WMI device present, but legacy ATKD device is also " - "present and enabled."); - pr_warning("You probably booted with acpi_osi=\"Linux\" or " - "acpi_osi=\"!Windows 2009\""); - pr_warning("Can't load eeepc-wmi, use default acpi_osi " - "(preferred) or eeepc-laptop"); - return -ENODEV; - } - - return eeepc_wmi_add(pdev); -} - -static struct platform_device *platform_device; - -static int __init eeepc_wmi_init(void) -{ - platform_device = platform_create_bundle(&platform_driver, - eeepc_wmi_probe, - NULL, 0, NULL, 0); - if (IS_ERR(platform_device)) - return PTR_ERR(platform_device); - return 0; -} - -static void __exit eeepc_wmi_exit(void) -{ - platform_device_unregister(platform_device); - platform_driver_unregister(&platform_driver); -} - -module_init(eeepc_wmi_init); -module_exit(eeepc_wmi_exit); -- 1.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/