linux/drivers/hid/hid-roccat-isku.c
Stefan Achatz ce71696525 HID: roccat: add support for IskuFX
Extending isku module with one additional and one changed sysfs attr. IskuFX has
larger light sysfs attr. Made the code size tolerant so both devices can be
handled.

Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-03-14 11:50:49 +01:00

451 lines
11 KiB
C

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