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![Stefan Achatz](/assets/img/avatar_default.png)
Isku needs an extra sysfs attr to support device reset. Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
447 lines
11 KiB
C
447 lines
11 KiB
C
/*
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* Roccat Isku driver for Linux
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*
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* Copyright (c) 2011 Stefan Achatz <erazor_de@users.sourceforge.net>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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/*
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* Roccat Isku is a gamer keyboard with macro keys that can be configured in
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* 5 profiles.
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*/
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#include <linux/device.h>
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#include <linux/input.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/hid-roccat.h>
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#include "hid-ids.h"
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#include "hid-roccat-common.h"
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#include "hid-roccat-isku.h"
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static struct class *isku_class;
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static void isku_profile_activated(struct isku_device *isku, uint new_profile)
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{
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isku->actual_profile = new_profile;
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}
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static int isku_receive(struct usb_device *usb_dev, uint command,
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void *buf, uint size)
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{
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return roccat_common2_receive(usb_dev, command, buf, size);
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}
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static int isku_get_actual_profile(struct usb_device *usb_dev)
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{
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struct isku_actual_profile buf;
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int retval;
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retval = isku_receive(usb_dev, ISKU_COMMAND_ACTUAL_PROFILE,
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&buf, sizeof(struct isku_actual_profile));
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return retval ? retval : buf.actual_profile;
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}
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static int isku_set_actual_profile(struct usb_device *usb_dev, int new_profile)
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{
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struct isku_actual_profile buf;
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buf.command = ISKU_COMMAND_ACTUAL_PROFILE;
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buf.size = sizeof(struct isku_actual_profile);
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buf.actual_profile = new_profile;
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return roccat_common2_send_with_status(usb_dev,
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ISKU_COMMAND_ACTUAL_PROFILE, &buf,
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sizeof(struct isku_actual_profile));
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}
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static ssize_t isku_sysfs_show_actual_profile(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct isku_device *isku =
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hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
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return snprintf(buf, PAGE_SIZE, "%d\n", isku->actual_profile);
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}
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static ssize_t isku_sysfs_set_actual_profile(struct device *dev,
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struct device_attribute *attr, char const *buf, size_t size)
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{
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struct isku_device *isku;
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struct usb_device *usb_dev;
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unsigned long profile;
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int retval;
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struct isku_roccat_report roccat_report;
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dev = dev->parent->parent;
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isku = hid_get_drvdata(dev_get_drvdata(dev));
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usb_dev = interface_to_usbdev(to_usb_interface(dev));
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retval = strict_strtoul(buf, 10, &profile);
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if (retval)
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return retval;
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if (profile > 4)
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return -EINVAL;
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mutex_lock(&isku->isku_lock);
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retval = isku_set_actual_profile(usb_dev, profile);
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if (retval) {
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mutex_unlock(&isku->isku_lock);
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return retval;
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}
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isku_profile_activated(isku, profile);
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roccat_report.event = ISKU_REPORT_BUTTON_EVENT_PROFILE;
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roccat_report.data1 = profile + 1;
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roccat_report.data2 = 0;
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roccat_report.profile = profile + 1;
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roccat_report_event(isku->chrdev_minor, (uint8_t const *)&roccat_report);
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mutex_unlock(&isku->isku_lock);
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return size;
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}
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static struct device_attribute isku_attributes[] = {
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__ATTR(actual_profile, 0660,
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isku_sysfs_show_actual_profile,
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isku_sysfs_set_actual_profile),
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__ATTR_NULL
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};
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static ssize_t isku_sysfs_read(struct file *fp, struct kobject *kobj,
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char *buf, loff_t off, size_t count,
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size_t real_size, uint command)
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{
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struct device *dev =
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container_of(kobj, struct device, kobj)->parent->parent;
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struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
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struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
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int retval;
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if (off >= real_size)
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return 0;
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if (off != 0 || count != real_size)
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return -EINVAL;
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mutex_lock(&isku->isku_lock);
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retval = isku_receive(usb_dev, command, buf, real_size);
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mutex_unlock(&isku->isku_lock);
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return retval ? retval : real_size;
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}
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static ssize_t isku_sysfs_write(struct file *fp, struct kobject *kobj,
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void const *buf, loff_t off, size_t count,
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size_t real_size, uint command)
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{
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struct device *dev =
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container_of(kobj, struct device, kobj)->parent->parent;
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struct isku_device *isku = hid_get_drvdata(dev_get_drvdata(dev));
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struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
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int retval;
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if (off != 0 || count != real_size)
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return -EINVAL;
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mutex_lock(&isku->isku_lock);
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retval = roccat_common2_send_with_status(usb_dev, command,
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(void *)buf, real_size);
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mutex_unlock(&isku->isku_lock);
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return retval ? retval : real_size;
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}
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#define ISKU_SYSFS_W(thingy, THINGY) \
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static ssize_t isku_sysfs_write_ ## thingy(struct file *fp, struct kobject *kobj, \
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struct bin_attribute *attr, char *buf, \
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loff_t off, size_t count) \
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{ \
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return isku_sysfs_write(fp, kobj, buf, off, count, \
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ISKU_SIZE_ ## THINGY, ISKU_COMMAND_ ## THINGY); \
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}
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#define ISKU_SYSFS_R(thingy, THINGY) \
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static ssize_t isku_sysfs_read_ ## thingy(struct file *fp, struct kobject *kobj, \
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struct bin_attribute *attr, char *buf, \
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loff_t off, size_t count) \
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{ \
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return isku_sysfs_read(fp, kobj, buf, off, count, \
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ISKU_SIZE_ ## THINGY, ISKU_COMMAND_ ## THINGY); \
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}
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#define ISKU_SYSFS_RW(thingy, THINGY) \
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ISKU_SYSFS_R(thingy, THINGY) \
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ISKU_SYSFS_W(thingy, THINGY)
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#define ISKU_BIN_ATTR_RW(thingy, THINGY) \
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{ \
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.attr = { .name = #thingy, .mode = 0660 }, \
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.size = ISKU_SIZE_ ## THINGY, \
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.read = isku_sysfs_read_ ## thingy, \
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.write = isku_sysfs_write_ ## thingy \
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}
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#define ISKU_BIN_ATTR_R(thingy, THINGY) \
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{ \
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.attr = { .name = #thingy, .mode = 0440 }, \
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.size = ISKU_SIZE_ ## THINGY, \
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.read = isku_sysfs_read_ ## thingy, \
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}
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#define ISKU_BIN_ATTR_W(thingy, THINGY) \
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{ \
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.attr = { .name = #thingy, .mode = 0220 }, \
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.size = ISKU_SIZE_ ## THINGY, \
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.write = isku_sysfs_write_ ## thingy \
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}
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ISKU_SYSFS_RW(macro, MACRO)
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ISKU_SYSFS_RW(keys_function, KEYS_FUNCTION)
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ISKU_SYSFS_RW(keys_easyzone, KEYS_EASYZONE)
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ISKU_SYSFS_RW(keys_media, KEYS_MEDIA)
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ISKU_SYSFS_RW(keys_thumbster, KEYS_THUMBSTER)
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ISKU_SYSFS_RW(keys_macro, KEYS_MACRO)
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ISKU_SYSFS_RW(keys_capslock, KEYS_CAPSLOCK)
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ISKU_SYSFS_RW(light, LIGHT)
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ISKU_SYSFS_RW(key_mask, KEY_MASK)
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ISKU_SYSFS_RW(last_set, LAST_SET)
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ISKU_SYSFS_W(talk, TALK)
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ISKU_SYSFS_R(info, INFO)
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ISKU_SYSFS_W(control, CONTROL)
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ISKU_SYSFS_W(reset, RESET)
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static struct bin_attribute isku_bin_attributes[] = {
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ISKU_BIN_ATTR_RW(macro, MACRO),
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ISKU_BIN_ATTR_RW(keys_function, KEYS_FUNCTION),
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ISKU_BIN_ATTR_RW(keys_easyzone, KEYS_EASYZONE),
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ISKU_BIN_ATTR_RW(keys_media, KEYS_MEDIA),
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ISKU_BIN_ATTR_RW(keys_thumbster, KEYS_THUMBSTER),
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ISKU_BIN_ATTR_RW(keys_macro, KEYS_MACRO),
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ISKU_BIN_ATTR_RW(keys_capslock, KEYS_CAPSLOCK),
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ISKU_BIN_ATTR_RW(light, LIGHT),
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ISKU_BIN_ATTR_RW(key_mask, KEY_MASK),
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ISKU_BIN_ATTR_RW(last_set, LAST_SET),
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ISKU_BIN_ATTR_W(talk, TALK),
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ISKU_BIN_ATTR_R(info, INFO),
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ISKU_BIN_ATTR_W(control, CONTROL),
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ISKU_BIN_ATTR_W(reset, RESET),
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__ATTR_NULL
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};
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static int isku_init_isku_device_struct(struct usb_device *usb_dev,
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struct isku_device *isku)
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{
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int retval;
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mutex_init(&isku->isku_lock);
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retval = isku_get_actual_profile(usb_dev);
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if (retval < 0)
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return retval;
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isku_profile_activated(isku, retval);
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return 0;
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}
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static int isku_init_specials(struct hid_device *hdev)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct usb_device *usb_dev = interface_to_usbdev(intf);
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struct isku_device *isku;
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int retval;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= ISKU_USB_INTERFACE_PROTOCOL) {
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hid_set_drvdata(hdev, NULL);
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return 0;
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}
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isku = kzalloc(sizeof(*isku), GFP_KERNEL);
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if (!isku) {
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hid_err(hdev, "can't alloc device descriptor\n");
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return -ENOMEM;
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}
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hid_set_drvdata(hdev, isku);
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retval = isku_init_isku_device_struct(usb_dev, isku);
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if (retval) {
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hid_err(hdev, "couldn't init struct isku_device\n");
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goto exit_free;
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}
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retval = roccat_connect(isku_class, hdev,
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sizeof(struct isku_roccat_report));
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if (retval < 0) {
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hid_err(hdev, "couldn't init char dev\n");
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} else {
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isku->chrdev_minor = retval;
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isku->roccat_claimed = 1;
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}
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return 0;
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exit_free:
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kfree(isku);
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return retval;
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}
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static void isku_remove_specials(struct hid_device *hdev)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct isku_device *isku;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= ISKU_USB_INTERFACE_PROTOCOL)
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return;
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isku = hid_get_drvdata(hdev);
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if (isku->roccat_claimed)
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roccat_disconnect(isku->chrdev_minor);
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kfree(isku);
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}
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static int isku_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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int retval;
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retval = hid_parse(hdev);
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if (retval) {
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hid_err(hdev, "parse failed\n");
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goto exit;
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}
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retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (retval) {
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hid_err(hdev, "hw start failed\n");
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goto exit;
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}
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retval = isku_init_specials(hdev);
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if (retval) {
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hid_err(hdev, "couldn't install keyboard\n");
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goto exit_stop;
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}
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return 0;
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exit_stop:
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hid_hw_stop(hdev);
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exit:
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return retval;
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}
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static void isku_remove(struct hid_device *hdev)
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{
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isku_remove_specials(hdev);
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hid_hw_stop(hdev);
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}
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static void isku_keep_values_up_to_date(struct isku_device *isku,
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u8 const *data)
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{
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struct isku_report_button const *button_report;
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switch (data[0]) {
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case ISKU_REPORT_NUMBER_BUTTON:
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button_report = (struct isku_report_button const *)data;
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switch (button_report->event) {
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case ISKU_REPORT_BUTTON_EVENT_PROFILE:
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isku_profile_activated(isku, button_report->data1 - 1);
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break;
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}
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break;
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}
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}
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static void isku_report_to_chrdev(struct isku_device const *isku,
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u8 const *data)
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{
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struct isku_roccat_report roccat_report;
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struct isku_report_button const *button_report;
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if (data[0] != ISKU_REPORT_NUMBER_BUTTON)
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return;
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button_report = (struct isku_report_button const *)data;
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roccat_report.event = button_report->event;
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roccat_report.data1 = button_report->data1;
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roccat_report.data2 = button_report->data2;
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roccat_report.profile = isku->actual_profile + 1;
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roccat_report_event(isku->chrdev_minor,
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(uint8_t const *)&roccat_report);
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}
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static int isku_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *data, int size)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct isku_device *isku = hid_get_drvdata(hdev);
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= ISKU_USB_INTERFACE_PROTOCOL)
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return 0;
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if (isku == NULL)
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return 0;
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isku_keep_values_up_to_date(isku, data);
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if (isku->roccat_claimed)
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isku_report_to_chrdev(isku, data);
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return 0;
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}
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static const struct hid_device_id isku_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, isku_devices);
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static struct hid_driver isku_driver = {
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.name = "isku",
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.id_table = isku_devices,
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.probe = isku_probe,
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.remove = isku_remove,
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.raw_event = isku_raw_event
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};
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static int __init isku_init(void)
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{
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int retval;
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isku_class = class_create(THIS_MODULE, "isku");
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if (IS_ERR(isku_class))
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return PTR_ERR(isku_class);
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isku_class->dev_attrs = isku_attributes;
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isku_class->dev_bin_attrs = isku_bin_attributes;
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retval = hid_register_driver(&isku_driver);
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if (retval)
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class_destroy(isku_class);
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return retval;
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}
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static void __exit isku_exit(void)
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{
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hid_unregister_driver(&isku_driver);
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class_destroy(isku_class);
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}
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module_init(isku_init);
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module_exit(isku_exit);
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MODULE_AUTHOR("Stefan Achatz");
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MODULE_DESCRIPTION("USB Roccat Isku driver");
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MODULE_LICENSE("GPL v2");
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