From patchwork Thu May 6 15:53:36 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Achatz X-Patchwork-Id: 97375 X-Patchwork-Delegate: jikos@jikos.cz Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o46Frghq005040 for ; Thu, 6 May 2010 15:53:42 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758987Ab0EFPxl (ORCPT ); Thu, 6 May 2010 11:53:41 -0400 Received: from mail-in-15.arcor-online.net ([151.189.21.55]:47781 "EHLO mail-in-15.arcor-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754221Ab0EFPxk (ORCPT ); Thu, 6 May 2010 11:53:40 -0400 Received: from mail-in-21-z2.arcor-online.net (unknown [151.189.8.185]) by mx.arcor.de (Postfix) with ESMTP id 11D8D1AB845; Thu, 6 May 2010 17:53:39 +0200 (CEST) Received: from mail-in-18.arcor-online.net (mail-in-18.arcor-online.net [151.189.21.58]) by mail-in-21-z2.arcor-online.net (Postfix) with ESMTP id C9D15EDAE6; Thu, 6 May 2010 17:53:38 +0200 (CEST) Received: from [192.168.0.1] (dslb-088-065-138-134.pools.arcor-ip.net [88.65.138.134]) by mail-in-18.arcor-online.net (Postfix) with ESMTPS id 021B33DC420; Thu, 6 May 2010 17:53:36 +0200 (CEST) X-DKIM: Sendmail DKIM Filter v2.8.2 mail-in-18.arcor-online.net 021B33DC420 Subject: [PATCH] HID: add chardev to propagate special events of Roccat hardware to userland From: Stefan Achatz Reply-To: erazor_de@users.sourceforge.net To: Jiri Kosina , Stephane Chatty , Jussi Kivilinna , wylda@volny.cz, Stefan Achatz , Jerome Vidal , Tejun Heo , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Date: Thu, 06 May 2010 17:53:36 +0200 Message-ID: <1273161216.2343.6.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 (2.28.3-1.fc12) Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Thu, 06 May 2010 15:53:46 +0000 (UTC) diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 44b4691..2c7018b 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -268,6 +268,14 @@ config HID_QUANTA ---help--- Support for Quanta Optical Touch dual-touch panels. +config HID_ROCCAT + tristate "Roccat special event support" + depends on USB_HID + ---help--- + Support for Roccat special events. + Say Y here if you have a Roccat mouse or keyboard and want OSD or + macro execution support. + config HID_ROCCAT_KONE tristate "Roccat Kone Mouse support" depends on USB_HID diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index 08b83cc..77fad93 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -44,6 +44,7 @@ obj-$(CONFIG_HID_ORTEK) += hid-ortek.o obj-$(CONFIG_HID_QUANTA) += hid-quanta.o obj-$(CONFIG_HID_PANTHERLORD) += hid-pl.o obj-$(CONFIG_HID_PETALYNX) += hid-petalynx.o +obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o obj-$(CONFIG_HID_ROCCAT_KONE) += hid-roccat-kone.o obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c index 7b11784..30e8329 100644 --- a/drivers/hid/hid-roccat-kone.c +++ b/drivers/hid/hid-roccat-kone.c @@ -37,6 +37,7 @@ #include #include #include "hid-ids.h" +#include "hid-roccat.h" #include "hid-roccat-kone.h" static void kone_set_settings_checksum(struct kone_settings *settings) @@ -630,7 +631,7 @@ static ssize_t kone_sysfs_set_startup_profile(struct device *dev, static ssize_t kone_sysfs_show_driver_version(struct device *dev, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, DRIVER_VERSION "\n"); + return snprintf(buf, PAGE_SIZE, ROCCAT_KONE_DRIVER_VERSION "\n"); } /* @@ -849,6 +850,16 @@ static int kone_init_specials(struct hid_device *hdev) "couldn't init struct kone_device\n"); goto exit_free; } + + retval = roccat_connect(hdev); + if (retval < 0) { + dev_err(&hdev->dev, "couldn't init char dev\n"); + /* be tolerant about not getting chrdev */ + } else { + kone->roccat_claimed = 1; + kone->chrdev_minor = retval; + } + retval = kone_create_sysfs_attributes(intf); if (retval) { dev_err(&hdev->dev, "cannot create sysfs files\n"); @@ -868,10 +879,14 @@ exit_free: static void kone_remove_specials(struct hid_device *hdev) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + struct kone_device *kone; if (intf->cur_altsetting->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) { kone_remove_sysfs_attributes(intf); + kone = hid_get_drvdata(hdev); + if (kone->roccat_claimed) + roccat_disconnect(kone->chrdev_minor); kfree(hid_get_drvdata(hdev)); } } @@ -912,6 +927,55 @@ static void kone_remove(struct hid_device *hdev) hid_hw_stop(hdev); } +/* handle special events and keep actual profile and dpi values up to date */ +static void kone_keep_values_up_to_date(struct kone_device *kone, + struct kone_mouse_event const *event) +{ + switch (event->event) { + case kone_mouse_event_switch_profile: + case kone_mouse_event_osd_profile: + kone->actual_profile = event->value; + kone->actual_dpi = kone->profiles[kone->actual_profile - 1]. + startup_dpi; + break; + case kone_mouse_event_switch_dpi: + case kone_mouse_event_osd_dpi: + kone->actual_dpi = event->value; + break; + } +} + +static void kone_report_to_chrdev(struct kone_device const *kone, + struct kone_mouse_event const *event) +{ + struct kone_roccat_report roccat_report; + + switch (event->event) { + case kone_mouse_event_switch_profile: + case kone_mouse_event_switch_dpi: + case kone_mouse_event_osd_profile: + case kone_mouse_event_osd_dpi: + roccat_report.event = event->event; + roccat_report.value = event->value; + roccat_report.key = 0; + roccat_report_event(kone->chrdev_minor, + (uint8_t *)&roccat_report, + sizeof(struct kone_roccat_report)); + break; + case kone_mouse_event_call_overlong_macro: + if (event->value == kone_keystroke_action_press) { + roccat_report.event = kone_mouse_event_call_overlong_macro; + roccat_report.value = kone->actual_profile; + roccat_report.key = event->macro_key; + roccat_report_event(kone->chrdev_minor, + (uint8_t *)&roccat_report, + sizeof(struct kone_roccat_report)); + } + break; + } + +} + /* * Is called for keyboard- and mousepart. * Only mousepart gets informations about special events in its extended event @@ -928,50 +992,23 @@ static int kone_raw_event(struct hid_device *hdev, struct hid_report *report, return 0; /* - * Firmware 1.38 introduced new behaviour for tilt buttons. - * Pressed tilt button is reported in each movement event. + * Firmware 1.38 introduced new behaviour for tilt and special buttons. + * Pressed button is reported in each movement event. * Workaround sends only one event per press. */ - if (kone->last_tilt_state == event->tilt) - event->tilt = 0; + + if (memcmp(&kone->last_mouse_event.tilt, &event->tilt, 5)) + memcpy(&kone->last_mouse_event, event, + sizeof(struct kone_mouse_event)); else - kone->last_tilt_state = event->tilt; + memset(&event->tilt, 0, 5); - /* - * handle special events and keep actual profile and dpi values - * up to date - */ - switch (event->event) { - case kone_mouse_event_osd_dpi: - dev_dbg(&hdev->dev, "osd dpi event. actual dpi %d\n", - event->value); - return 1; /* return 1 if event was handled */ - case kone_mouse_event_switch_dpi: - kone->actual_dpi = event->value; - dev_dbg(&hdev->dev, "switched dpi to %d\n", event->value); - return 1; - case kone_mouse_event_osd_profile: - dev_dbg(&hdev->dev, "osd profile event. actual profile %d\n", - event->value); - return 1; - case kone_mouse_event_switch_profile: - kone->actual_profile = event->value; - kone->actual_dpi = kone->profiles[kone->actual_profile - 1]. - startup_dpi; - dev_dbg(&hdev->dev, "switched profile to %d\n", event->value); - return 1; - case kone_mouse_event_call_overlong_macro: - dev_dbg(&hdev->dev, "overlong macro called, button %d %s/%s\n", - event->macro_key, - kone->profiles[kone->actual_profile - 1]. - button_infos[event->macro_key].macro_set_name, - kone->profiles[kone->actual_profile - 1]. - button_infos[event->macro_key].macro_name - ); - return 1; - } + kone_keep_values_up_to_date(kone, event); + + if (kone->roccat_claimed) + kone_report_to_chrdev(kone, event); - return 0; /* do further processing */ + return 0; /* always do further processing */ } static const struct hid_device_id kone_devices[] = { @@ -989,12 +1026,12 @@ static struct hid_driver kone_driver = { .raw_event = kone_raw_event }; -static int kone_init(void) +static int __init kone_init(void) { return hid_register_driver(&kone_driver); } -static void kone_exit(void) +static void __exit kone_exit(void) { hid_unregister_driver(&kone_driver); } @@ -1002,6 +1039,6 @@ static void kone_exit(void) module_init(kone_init); module_exit(kone_exit); -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE(DRIVER_LICENSE); +MODULE_AUTHOR("Stefan Achatz"); +MODULE_DESCRIPTION("USB Roccat Kone driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/hid/hid-roccat-kone.h b/drivers/hid/hid-roccat-kone.h index ee6898c..003e6f8 100644 --- a/drivers/hid/hid-roccat-kone.h +++ b/drivers/hid/hid-roccat-kone.h @@ -14,10 +14,7 @@ #include -#define DRIVER_VERSION "v0.3.0" -#define DRIVER_AUTHOR "Stefan Achatz" -#define DRIVER_DESC "USB Roccat Kone driver" -#define DRIVER_LICENSE "GPL v2" +#define ROCCAT_KONE_DRIVER_VERSION "v0.3.1" #pragma pack(push) #pragma pack(1) @@ -83,6 +80,17 @@ enum kone_button_info_types { kone_button_info_type_multimedia_volume_down = 0x27 }; +enum kone_button_info_numbers { + kone_button_top = 1, + kone_button_wheel_tilt_left = 2, + kone_button_wheel_tilt_right = 3, + kone_button_forward = 4, + kone_button_backward = 5, + kone_button_middle = 6, + kone_button_plus = 7, + kone_button_minus = 8, +}; + struct kone_light_info { uint8_t number; /* number of light 1-5 */ uint8_t mod; /* 1 = on, 2 = off */ @@ -120,6 +128,7 @@ struct kone_profile { uint8_t light_effect_speed; /* range 0-255 */ struct kone_light_info light_infos[5]; + /* offset is kone_button_info_numbers - 1 */ struct kone_button_info button_infos[8]; uint16_t checksum; /* \brief holds checksum of struct */ @@ -165,7 +174,7 @@ enum kone_mouse_events { /* TODO clarify meaning and occurence of kone_mouse_event_calibration */ kone_mouse_event_calibration = 0xc0, kone_mouse_event_call_overlong_macro = 0xe0, - /* switch events notify if user changed values wiht mousebutton click */ + /* switch events notify if user changed values with mousebutton click */ kone_mouse_event_switch_dpi = 0xf0, kone_mouse_event_switch_profile = 0xf1 }; @@ -180,6 +189,12 @@ enum kone_commands { kone_command_firmware = 0xe5a }; +struct kone_roccat_report { + uint8_t event; + uint8_t value; /* holds dpi or profile value */ + uint8_t key; /* macro key on overlong macro execution */ +}; + #pragma pack(pop) struct kone_device { @@ -188,8 +203,9 @@ struct kone_device { * is no way of getting this information from the device on demand */ int actual_profile, actual_dpi; - /* Used for neutralizing abnormal tilt button behaviour */ - int last_tilt_state; + /* Used for neutralizing abnormal button behaviour */ + struct kone_mouse_event last_mouse_event; + /* * It's unlikely that multiple sysfs attributes are accessed at a time, * so only one mutex is used to secure hardware access and profiles and @@ -209,6 +225,9 @@ struct kone_device { * so it's read only once */ int firmware_version; + + int roccat_claimed; + int chrdev_minor; }; #endif diff --git a/drivers/hid/hid-roccat.c b/drivers/hid/hid-roccat.c new file mode 100644 index 0000000..e05d48e --- /dev/null +++ b/drivers/hid/hid-roccat.c @@ -0,0 +1,428 @@ +/* + * Roccat driver for Linux + * + * Copyright (c) 2010 Stefan Achatz + */ + +/* + * 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. + */ + +/* + * Module roccat is a char device used to report special events of roccat + * hardware to userland. These events include requests for on-screen-display of + * profile or dpi settings or requests for execution of macro sequences that are + * not stored in device. The information in these events depends on hid device + * implementation and contains data that is not available in a single hid event + * or else hidraw could have been used. + * It is inspired by hidraw, but uses only one circular buffer for all readers. + */ + +#include +#include +#include + +#include "hid-roccat.h" + +#define ROCCAT_FIRST_MINOR 0 +#define ROCCAT_MAX_DEVICES 8 + +/* should be a power of 2 for performance reason */ +#define ROCCAT_CBUF_SIZE 16 + +struct roccat_report { + uint8_t *value; + int len; +}; + +struct roccat_device { + unsigned int minor; + int open; + int exist; + wait_queue_head_t wait; + struct device *dev; + struct hid_device *hid; + struct list_head readers; + /* protects modifications of readers list */ + struct mutex readers_lock; + + /* + * circular_buffer has one writer and multiple readers with their own + * read pointers + */ + struct roccat_report cbuf[ROCCAT_CBUF_SIZE]; + int cbuf_end; + struct mutex cbuf_lock; +}; + +struct roccat_reader { + struct list_head node; + struct roccat_device *device; + int cbuf_start; +}; + +static int roccat_major; +static struct class *roccat_class; +static struct cdev roccat_cdev; + +static struct roccat_device *devices[ROCCAT_MAX_DEVICES]; +/* protects modifications of devices array */ +static DEFINE_MUTEX(devices_lock); + +static ssize_t roccat_read(struct file *file, char __user *buffer, + size_t count, loff_t *ppos) +{ + struct roccat_reader *reader = file->private_data; + struct roccat_device *device = reader->device; + struct roccat_report *report; + ssize_t retval = 0, len; + DECLARE_WAITQUEUE(wait, current); + + mutex_lock(&device->cbuf_lock); + + /* no data? */ + if (reader->cbuf_start == device->cbuf_end) { + add_wait_queue(&device->wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + + /* wait for data */ + while (reader->cbuf_start == device->cbuf_end) { + if (file->f_flags & O_NONBLOCK) { + retval = -EAGAIN; + break; + } + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } + if (!device->exist) { + retval = -EIO; + break; + } + + mutex_unlock(&device->cbuf_lock); + schedule(); + mutex_lock(&device->cbuf_lock); + set_current_state(TASK_INTERRUPTIBLE); + } + + set_current_state(TASK_RUNNING); + remove_wait_queue(&device->wait, &wait); + } + + /* here we either have data or a reason to return if retval is set */ + if (retval) + goto exit_unlock; + + report = &device->cbuf[reader->cbuf_start]; + /* + * If report is larger than requested amount of data, rest of report + * is lost! + */ + len = report->len > count ? count : report->len; + + if (copy_to_user(buffer, report->value, len)) { + retval = -EFAULT; + goto exit_unlock; + } + retval += len; + reader->cbuf_start = (reader->cbuf_start + 1) % ROCCAT_CBUF_SIZE; + +exit_unlock: + mutex_unlock(&device->cbuf_lock); + return retval; +} + +static unsigned int roccat_poll(struct file *file, poll_table *wait) +{ + struct roccat_reader *reader = file->private_data; + poll_wait(file, &reader->device->wait, wait); + if (reader->cbuf_start != reader->device->cbuf_end) + return POLLIN | POLLRDNORM; + if (!reader->device->exist) + return POLLERR | POLLHUP; + return 0; +} + +static int roccat_open(struct inode *inode, struct file *file) +{ + unsigned int minor = iminor(inode); + struct roccat_reader *reader; + struct roccat_device *device; + int error = 0; + + reader = kzalloc(sizeof(struct roccat_reader), GFP_KERNEL); + if (!reader) + return -ENOMEM; + + mutex_lock(&devices_lock); + + device = devices[minor]; + + mutex_lock(&device->readers_lock); + + if (!device) { + printk(KERN_EMERG "roccat device with minor %d doesn't exist\n", + minor); + error = -ENODEV; + goto exit_unlock; + } + + if (!device->open++) { + /* power on device on adding first reader */ + if (device->hid->ll_driver->power) { + error = device->hid->ll_driver->power(device->hid, + PM_HINT_FULLON); + if (error < 0) { + --device->open; + goto exit_unlock; + } + } + error = device->hid->ll_driver->open(device->hid); + if (error < 0) { + if (device->hid->ll_driver->power) + device->hid->ll_driver->power(device->hid, + PM_HINT_NORMAL); + --device->open; + goto exit_unlock; + } + } + + reader->device = device; + /* new reader doesn't get old events */ + reader->cbuf_start = device->cbuf_end; + + list_add_tail(&reader->node, &device->readers); + file->private_data = reader; + +exit_unlock: + mutex_unlock(&device->readers_lock); + mutex_unlock(&devices_lock); + return error; +} + +static int roccat_release(struct inode *inode, struct file *file) +{ + unsigned int minor = iminor(inode); + struct roccat_reader *reader = file->private_data; + struct roccat_device *device; + + mutex_lock(&devices_lock); + + device = devices[minor]; + if (!device) { + mutex_unlock(&devices_lock); + printk(KERN_EMERG "roccat device with minor %d doesn't exist\n", + minor); + return -ENODEV; + } + + mutex_lock(&device->readers_lock); + list_del(&reader->node); + mutex_unlock(&device->readers_lock); + kfree(reader); + + if (!--device->open) { + /* removing last reader */ + if (device->exist) { + if (device->hid->ll_driver->power) + device->hid->ll_driver->power(device->hid, + PM_HINT_NORMAL); + device->hid->ll_driver->close(device->hid); + } else { + kfree(device); + } + } + + mutex_unlock(&devices_lock); + + return 0; +} + +/* + * roccat_report_event() - output data to readers + * @minor: minor device number returned by roccat_connect() + * @data: pointer to data + * @len: size of data + * + * Return value is zero on success, a negative error code on failure. + * + * This is called from interrupt handler. + */ +int roccat_report_event(int minor, u8 const *data, int len) +{ + struct roccat_device *device; + struct roccat_reader *reader; + struct roccat_report *report; + uint8_t *new_value; + + new_value = kmemdup(data, len, GFP_ATOMIC); + if (!new_value) + return -ENOMEM; + + device = devices[minor]; + + report = &device->cbuf[device->cbuf_end]; + + /* passing NULL is safe */ + kfree(report->value); + + report->value = new_value; + report->len = len; + device->cbuf_end = (device->cbuf_end + 1) % ROCCAT_CBUF_SIZE; + + list_for_each_entry(reader, &device->readers, node) { + /* + * As we already inserted one element, the buffer can't be + * empty. If start and end are equal, buffer is full and we + * increase start, so that slow reader misses one event, but + * gets the newer ones in the right order. + */ + if (reader->cbuf_start == device->cbuf_end) + reader->cbuf_start = (reader->cbuf_start + 1) % ROCCAT_CBUF_SIZE; + } + + wake_up_interruptible(&device->wait); + return 0; +} +EXPORT_SYMBOL_GPL(roccat_report_event); + +/* + * roccat_connect() - create a char device for special event output + * @hid: the hid device the char device should be connected to. + * + * Return value is minor device number in Range [0, ROCCAT_MAX_DEVICES] on + * success, a negative error code on failure. + */ +int roccat_connect(struct hid_device *hid) +{ + unsigned int minor; + struct roccat_device *device; + int temp; + + device = kzalloc(sizeof(struct roccat_device), GFP_KERNEL); + if (!device) + return -ENOMEM; + + mutex_lock(&devices_lock); + + for (minor = 0; minor < ROCCAT_MAX_DEVICES; ++minor) { + if (devices[minor]) + continue; + break; + } + + if (minor < ROCCAT_MAX_DEVICES) { + devices[minor] = device; + } else { + mutex_unlock(&devices_lock); + kfree(device); + return -EINVAL; + } + + device->dev = device_create(roccat_class, &hid->dev, + MKDEV(roccat_major, minor), NULL, + "%s%s%d", "roccat", hid->driver->name, minor); + + if (IS_ERR(device->dev)) { + devices[minor] = NULL; + mutex_unlock(&devices_lock); + temp = PTR_ERR(device->dev); + kfree(device); + return temp; + } + + mutex_unlock(&devices_lock); + + init_waitqueue_head(&device->wait); + INIT_LIST_HEAD(&device->readers); + mutex_init(&device->readers_lock); + mutex_init(&device->cbuf_lock); + device->minor = minor; + device->hid = hid; + device->exist = 1; + device->cbuf_end = 0; + + return minor; +} +EXPORT_SYMBOL_GPL(roccat_connect); + +/* roccat_disconnect() - remove char device from hid device + * @minor: the minor device number returned by roccat_connect() + */ +void roccat_disconnect(int minor) +{ + struct roccat_device *device; + + mutex_lock(&devices_lock); + device = devices[minor]; + devices[minor] = NULL; + mutex_unlock(&devices_lock); + + device->exist = 0; /* TODO exist maybe not needed */ + + device_destroy(roccat_class, MKDEV(roccat_major, minor)); + + if (device->open) { + device->hid->ll_driver->close(device->hid); + wake_up_interruptible(&device->wait); + } else { + kfree(device); + } +} +EXPORT_SYMBOL_GPL(roccat_disconnect); + +static const struct file_operations roccat_ops = { + .owner = THIS_MODULE, + .read = roccat_read, + .poll = roccat_poll, + .open = roccat_open, + .release = roccat_release, +}; + +static int __init roccat_init(void) +{ + int retval; + dev_t dev_id; + + retval = alloc_chrdev_region(&dev_id, ROCCAT_FIRST_MINOR, + ROCCAT_MAX_DEVICES, "roccat"); + + roccat_major = MAJOR(dev_id); + + if (retval < 0) { + printk(KERN_WARNING "roccat: can't get major number\n"); + return retval; + } + + roccat_class = class_create(THIS_MODULE, "roccat"); + if (IS_ERR(roccat_class)) { + retval = PTR_ERR(roccat_class); + unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES); + return retval; + } + + cdev_init(&roccat_cdev, &roccat_ops); + cdev_add(&roccat_cdev, dev_id, ROCCAT_MAX_DEVICES); + + return 0; +} + +static void __exit roccat_exit(void) +{ + dev_t dev_id = MKDEV(roccat_major, 0); + + cdev_del(&roccat_cdev); + class_destroy(roccat_class); + unregister_chrdev_region(dev_id, ROCCAT_MAX_DEVICES); +} + +module_init(roccat_init); +module_exit(roccat_exit); + +MODULE_AUTHOR("Stefan Achatz"); +MODULE_DESCRIPTION("USB Roccat char device"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/hid/hid-roccat.h b/drivers/hid/hid-roccat.h new file mode 100644 index 0000000..40cca5b --- /dev/null +++ b/drivers/hid/hid-roccat.h @@ -0,0 +1,31 @@ +#ifndef __HID_ROCCAT_H +#define __HID_ROCCAT_H + +/* + * Copyright (c) 2010 Stefan Achatz + */ + +/* + * 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. + */ + +#include +#include + +#ifdef CONFIG_HID_ROCCAT +int roccat_connect(struct hid_device *hid); +void roccat_disconnect(int minor); +int roccat_report_event(int minor, u8 const *data, int len); +#else +static inline int roccat_connect(struct hid_device *hid) { return -1; } +static inline void roccat_disconnect(int minor) {} +static inline int roccat_report_event(int minor, u8 const *data, int len) +{ + return 0; +} +#endif + +#endif