Here is the patch made from the today linux-acpi tree. Thanks, Angelo Arrifano diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index f688c21..fb096ee 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -196,6 +196,14 @@ config ACPI_THERMAL recommended that this option be enabled, as your processor(s) may be damaged without it. +config ACPI_QUICKSTART + tristate "Quickstart" + default y + help + This driver add support for ACPI Direct Application Launch + also known as Hotstart(TM). Say yes here to have a entry in + sysfs telling which button was used to turn on the system. + config ACPI_NUMA bool "NUMA support" depends on NUMA diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index f29812a..badb0a6 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -62,3 +62,4 @@ obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o obj-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o obj-$(CONFIG_ACPI_SBS) += sbs.o obj-$(CONFIG_ACPI_SBS) += sbshc.o +obj-$(CONFIG_ACPI_QUICKSTART) += quickstart.o diff --git a/drivers/acpi/quickstart.c b/drivers/acpi/quickstart.c new file mode 100644 index 0000000..a4726f8 --- /dev/null +++ b/drivers/acpi/quickstart.c @@ -0,0 +1,418 @@ +/* + * quickstart.c - ACPI Direct App Launch driver + * + * + * Copyright (C) 2007 Angelo Arrifano <miknix@xxxxxxxxx> + * + * Information gathered from disassebled dsdt and from here: + * "http://download.microsoft.com/download/9/c/5/ + * 9c5b2167-8017-4bae-9fde-d599bac8184a/DirAppLaunch_Vista.doc" + * + * 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 QUICKSTART_VERSION "1.00" + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <acpi/acpi_drivers.h> +#include <linux/platform_device.h> + +MODULE_AUTHOR("Angelo Arrifano"); +MODULE_DESCRIPTION("ACPI Direct App Launch driver"); +MODULE_LICENSE("GPL"); + +static int enable_runtime_btns; +module_param(enable_runtime_btns, int, 0); +MODULE_PARM_DESC(enable_runtime_btns, + "Enable reporting of runtime button presses (hotkeys).\n"); + +#define QUICKSTART_ACPI_DEVICE_NAME "quickstart" +#define QUICKSTART_ACPI_CLASS "quickstart" +#define QUICKSTART_ACPI_HID "PNP0C32" + +#define QUICKSTART_PF_DRIVER_NAME "quickstart" +#define QUICKSTART_PF_DEVICE_NAME "quickstart" +#define QUICKSTART_PF_DEVATTR_NAME "pressed_button" + +#define QUICKSTART_MAX_BTN_NAME_LEN 16 + +struct quickstart_btn_list { + char *name; + struct quickstart_btn_list *next; +}; + +static struct quickstart_driver_data { + struct quickstart_btn_list *btn_lst; + struct quickstart_btn_list *pressed; +} quickstart_data = { + .btn_lst = NULL, + .pressed = NULL, +}; + +/* + * ACPI driver Structs + */ + +struct quickstart_acpi { + struct acpi_device *device; + struct quickstart_btn_list *btn; +}; +static int quickstart_acpi_add(struct acpi_device *device); +static int quickstart_acpi_remove(struct acpi_device *device, int type); +static const struct acpi_device_id quickstart_device_ids[] = { + {QUICKSTART_ACPI_HID, 0}, + {"", 0}, +}; + +static struct acpi_driver quickstart_acpi_driver = { + .name = "quickstart", + .class = QUICKSTART_ACPI_CLASS, + .ids = quickstart_device_ids, + .ops = { + .add = quickstart_acpi_add, + .remove = quickstart_acpi_remove, + }, +}; + +/* + * Platform driver structs + */ +static ssize_t buttons_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t pressed_button_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t pressed_button_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count); +static DEVICE_ATTR(pressed_button, 0666, pressed_button_show, + pressed_button_store); +static DEVICE_ATTR(buttons, 0444, buttons_show, NULL); +static struct platform_device *pf_device; +static struct platform_driver pf_driver = { + .driver = { + .name = QUICKSTART_PF_DRIVER_NAME, + .owner = THIS_MODULE, + } +}; + +/* + * Platform driver functions + */ +static ssize_t buttons_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int count = 0; + char tmpbuf[QUICKSTART_MAX_BTN_NAME_LEN + 2]; + struct quickstart_btn_list *ptr = quickstart_data.btn_lst; + + if(!ptr) + return snprintf(buf, PAGE_SIZE, "none"); + + while(ptr && (count < PAGE_SIZE)){ + if(ptr->name){ + strncpy(tmpbuf, ptr->name, QUICKSTART_MAX_BTN_NAME_LEN); + strcat(tmpbuf, "\n"); + count += snprintf(buf + count, + PAGE_SIZE - count, + tmpbuf); + } + ptr = ptr->next; + } + + return count; +} + +static ssize_t pressed_button_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%s\n", + (quickstart_data.pressed?quickstart_data.pressed->name:"none")); +} + + +static ssize_t pressed_button_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + if(count < 2) + return -EINVAL; + + if(strncasecmp(buf, "none", 4) != 0) + return -EINVAL; + + quickstart_data.pressed = NULL; + return count; +} + +/* Hotstart Helper functions */ +static int quickstart_btnlst_add(struct quickstart_btn_list **data) +{ + struct quickstart_btn_list **ptr = &quickstart_data.btn_lst; + + while(*ptr) + ptr = &((*ptr)->next); + + *ptr = kzalloc(sizeof(struct quickstart_btn_list), GFP_KERNEL); + if(!*ptr){ + *data = NULL; + return(-ENOMEM); + } + *data = *ptr; + + return 0; +} + +static void quickstart_btnlst_free(void) +{ + struct quickstart_btn_list *ptr = quickstart_data.btn_lst; + struct quickstart_btn_list *lptr = NULL; + + if(!ptr) + return; + + while(ptr){ + lptr = ptr; + ptr = ptr->next; + if(lptr->name) + kfree(lptr->name); + kfree(lptr); + } + + return; +} + +/* ACPI Driver functions */ +static void quickstart_acpi_notify(acpi_handle handle, u32 event, void *data) +{ + struct quickstart_acpi *quickstart = data; + + if (!quickstart) + return; + + /* There will be two events: + * 0x02 - A quickstart button was pressed while device was off/sleeping. + * 0x08 - A quickstart button was pressed while device was up. */ + if((event|0x02) == event){ + quickstart_data.pressed = quickstart->btn; + printk("quickstart: Quickbutton %s pressed.\n", + acpi_device_bid(quickstart->device)); + } + + if(enable_runtime_btns && (event|0x08) == event){ + printk("quickstart: Hotkey %s pressed.\n", + acpi_device_bid(quickstart->device)); + } + + return; +} + +static void quickstart_acpi_raise_notify(struct quickstart_acpi *quickstart) +{ + acpi_status status; + + /* TODO: + * We should receive a buffer telling the kind of button, + * eg: dvd, printer, www, ... + * but we dont care about it now. The important is to trigger + * pending notify events (The ones before booting). */ + status = acpi_evaluate_object(quickstart->device->handle, + "GHID", NULL, NULL); + if(ACPI_FAILURE(status)) + printk("quickstart: Warning: GHID method failed, events of pressed buttons may have been lost.\n"); + + return; +} + +static int quickstart_acpi_config(struct quickstart_acpi *quickstart, char *bid) +{ + int len = strlen(bid); + int ret; + + /* Add button to list */ + ret = quickstart_btnlst_add(&quickstart->btn); + if(ret) + return ret; + + quickstart->btn->name = kzalloc(len + 1, GFP_KERNEL); + if(!quickstart->btn->name){ + quickstart_btnlst_free(); + return -ENOMEM; + } + strcpy(quickstart->btn->name, bid); + + return 0; +} + +static int quickstart_acpi_add(struct acpi_device *device) +{ + int ret = 0; + acpi_status status = AE_OK; + struct quickstart_acpi *quickstart = NULL; + + if (!device) + return -EINVAL; + + quickstart = kzalloc(sizeof(struct quickstart_acpi), GFP_KERNEL); + if (!quickstart) + return -ENOMEM; + + quickstart->device = device; + strcpy(acpi_device_name(device), QUICKSTART_ACPI_DEVICE_NAME); + strcpy(acpi_device_class(device), QUICKSTART_ACPI_CLASS); + acpi_driver_data(device) = quickstart; + + /* Add button to list and initialize some stuff */ + ret = quickstart_acpi_config(quickstart, acpi_device_bid(device)); + if(ret) + goto fail_config; + + status = acpi_install_notify_handler(device->handle, + ACPI_ALL_NOTIFY, + quickstart_acpi_notify, quickstart); + if(ACPI_FAILURE(status)){ + printk("quickstart: Error installing notify handler\n"); + ret = -ENODEV; + goto fail_installnotify; + } + + /* Call device GHID method. This is a workaround to get a notify + * event when hot button is pressed while laptop is powered off. + * This works, even if the method fails. */ + quickstart_acpi_raise_notify(quickstart); + + return 0; + +fail_installnotify: +fail_config: + + kfree(quickstart); + + return ret; +} + +static int quickstart_acpi_remove(struct acpi_device *device, int type) +{ + acpi_status status = 0; + struct quickstart_acpi *quickstart = NULL; + + if (!device || !acpi_driver_data(device)) + return -EINVAL; + + quickstart = acpi_driver_data(device); + + status = acpi_remove_notify_handler(device->handle, + ACPI_ALL_NOTIFY, + quickstart_acpi_notify); + if (ACPI_FAILURE(status)) + printk("quickstart: Error removing notify handler\n"); + + + kfree(quickstart); + + return 0; +} + +/* Module functions */ + +static void quickstart_exit(void) +{ + device_remove_file(&pf_device->dev, &dev_attr_pressed_button); + device_remove_file(&pf_device->dev, &dev_attr_buttons); + + platform_device_unregister(pf_device); + + platform_driver_unregister(&pf_driver); + + acpi_bus_unregister_driver(&quickstart_acpi_driver); + + quickstart_btnlst_free(); + + return; +} + +static int __init quickstart_init(void) +{ + int ret; + acpi_status status = 0; + + /* ACPI Check */ + if(acpi_disabled) + return -ENODEV; + + /* ACPI driver register */ + status = acpi_bus_register_driver(&quickstart_acpi_driver); + if (!quickstart_data.btn_lst || status < 0) + return -ENODEV; + + /* Platform driver register */ + ret = platform_driver_register(&pf_driver); + if(ret) + goto fail_pfdrv_reg; + + /* Platform device register */ + pf_device = platform_device_alloc(QUICKSTART_PF_DEVICE_NAME, -1); + if(!pf_device){ + ret = -ENOMEM; + goto fail_pfdev_alloc; + } + + ret = platform_device_register(pf_device); + if(ret) + goto fail_pfdev_reg; + + /* Create device sysfs file */ + ret = device_create_file(&pf_device->dev, &dev_attr_pressed_button); + if(ret) + goto fail_dev_file; + + ret = device_create_file(&pf_device->dev, &dev_attr_buttons); + if(ret) + goto fail_dev_file2; + + printk("quickstart: ACPI Direct App Launch ver %s\n", QUICKSTART_VERSION); + if(enable_runtime_btns) + printk("quickstart: Runtime button reporting is enabled."); + + return 0; + +fail_dev_file2: + device_remove_file(&pf_device->dev, &dev_attr_pressed_button); + +fail_dev_file: + platform_device_del(pf_device); + +fail_pfdev_reg: + platform_device_put(pf_device); + +fail_pfdev_alloc: + platform_driver_unregister(&pf_driver); + +fail_pfdrv_reg: + acpi_bus_unregister_driver(&quickstart_acpi_driver); + + return ret; +} + +module_init(quickstart_init); +module_exit(quickstart_exit); -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
