M7350/kernel/drivers/hid/hid-roccat-pyra.c

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/*
* Roccat Pyra driver for Linux
*
* Copyright (c) 2010 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 Pyra is a mobile gamer mouse which comes in wired and wireless
* variant. Wireless variant is not tested.
* Userland tools can be found at http://sourceforge.net/projects/roccat
*/
#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-pyra.h"
static uint profile_numbers[5] = {0, 1, 2, 3, 4};
/* pyra_class is used for creating sysfs attributes via roccat char device */
static struct class *pyra_class;
static void profile_activated(struct pyra_device *pyra,
unsigned int new_profile)
{
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if (new_profile >= ARRAY_SIZE(pyra->profile_settings))
return;
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pyra->actual_profile = new_profile;
pyra->actual_cpi = pyra->profile_settings[pyra->actual_profile].y_cpi;
}
static int pyra_send_control(struct usb_device *usb_dev, int value,
enum pyra_control_requests request)
{
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struct roccat_common2_control control;
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if ((request == PYRA_CONTROL_REQUEST_PROFILE_SETTINGS ||
request == PYRA_CONTROL_REQUEST_PROFILE_BUTTONS) &&
(value < 0 || value > 4))
return -EINVAL;
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control.command = ROCCAT_COMMON_COMMAND_CONTROL;
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control.value = value;
control.request = request;
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return roccat_common2_send(usb_dev, ROCCAT_COMMON_COMMAND_CONTROL,
&control, sizeof(struct roccat_common2_control));
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}
static int pyra_get_profile_settings(struct usb_device *usb_dev,
struct pyra_profile_settings *buf, int number)
{
int retval;
retval = pyra_send_control(usb_dev, number,
PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
if (retval)
return retval;
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return roccat_common2_receive(usb_dev, PYRA_COMMAND_PROFILE_SETTINGS,
buf, PYRA_SIZE_PROFILE_SETTINGS);
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}
static int pyra_get_settings(struct usb_device *usb_dev,
struct pyra_settings *buf)
{
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return roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
buf, PYRA_SIZE_SETTINGS);
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}
static int pyra_set_settings(struct usb_device *usb_dev,
struct pyra_settings const *settings)
{
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return roccat_common2_send_with_status(usb_dev,
PYRA_COMMAND_SETTINGS, settings,
PYRA_SIZE_SETTINGS);
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}
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static ssize_t pyra_sysfs_read(struct file *fp, struct kobject *kobj,
char *buf, loff_t off, size_t count,
size_t real_size, uint command)
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{
struct device *dev =
container_of(kobj, struct device, kobj)->parent->parent;
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
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struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
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)
return -EINVAL;
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mutex_lock(&pyra->pyra_lock);
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retval = roccat_common2_receive(usb_dev, command, buf, real_size);
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mutex_unlock(&pyra->pyra_lock);
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if (retval)
return retval;
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return real_size;
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}
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static ssize_t pyra_sysfs_write(struct file *fp, struct kobject *kobj,
void const *buf, loff_t off, size_t count,
size_t real_size, uint command)
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{
struct device *dev =
container_of(kobj, struct device, kobj)->parent->parent;
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
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;
mutex_lock(&pyra->pyra_lock);
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retval = roccat_common2_send_with_status(usb_dev, command, (void *)buf, real_size);
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mutex_unlock(&pyra->pyra_lock);
if (retval)
return retval;
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return real_size;
}
#define PYRA_SYSFS_W(thingy, THINGY) \
static ssize_t pyra_sysfs_write_ ## thingy(struct file *fp, \
struct kobject *kobj, struct bin_attribute *attr, char *buf, \
loff_t off, size_t count) \
{ \
return pyra_sysfs_write(fp, kobj, buf, off, count, \
PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
}
#define PYRA_SYSFS_R(thingy, THINGY) \
static ssize_t pyra_sysfs_read_ ## thingy(struct file *fp, \
struct kobject *kobj, struct bin_attribute *attr, char *buf, \
loff_t off, size_t count) \
{ \
return pyra_sysfs_read(fp, kobj, buf, off, count, \
PYRA_SIZE_ ## THINGY, PYRA_COMMAND_ ## THINGY); \
}
#define PYRA_SYSFS_RW(thingy, THINGY) \
PYRA_SYSFS_W(thingy, THINGY) \
PYRA_SYSFS_R(thingy, THINGY)
#define PYRA_BIN_ATTRIBUTE_RW(thingy, THINGY) \
PYRA_SYSFS_RW(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
.attr = { .name = #thingy, .mode = 0660 }, \
.size = PYRA_SIZE_ ## THINGY, \
.read = pyra_sysfs_read_ ## thingy, \
.write = pyra_sysfs_write_ ## thingy \
}
#define PYRA_BIN_ATTRIBUTE_R(thingy, THINGY) \
PYRA_SYSFS_R(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
.attr = { .name = #thingy, .mode = 0440 }, \
.size = PYRA_SIZE_ ## THINGY, \
.read = pyra_sysfs_read_ ## thingy, \
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}
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#define PYRA_BIN_ATTRIBUTE_W(thingy, THINGY) \
PYRA_SYSFS_W(thingy, THINGY); \
static struct bin_attribute bin_attr_##thingy = { \
.attr = { .name = #thingy, .mode = 0220 }, \
.size = PYRA_SIZE_ ## THINGY, \
.write = pyra_sysfs_write_ ## thingy \
}
PYRA_BIN_ATTRIBUTE_W(control, CONTROL);
PYRA_BIN_ATTRIBUTE_RW(info, INFO);
PYRA_BIN_ATTRIBUTE_RW(profile_settings, PROFILE_SETTINGS);
PYRA_BIN_ATTRIBUTE_RW(profile_buttons, PROFILE_BUTTONS);
static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
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struct kobject *kobj, struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev =
container_of(kobj, struct device, kobj)->parent->parent;
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
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ssize_t retval;
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retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
PYRA_CONTROL_REQUEST_PROFILE_SETTINGS);
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if (retval)
return retval;
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return pyra_sysfs_read(fp, kobj, buf, off, count,
PYRA_SIZE_PROFILE_SETTINGS,
PYRA_COMMAND_PROFILE_SETTINGS);
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}
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static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
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struct kobject *kobj, struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev =
container_of(kobj, struct device, kobj)->parent->parent;
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struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
ssize_t retval;
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retval = pyra_send_control(usb_dev, *(uint *)(attr->private),
PYRA_CONTROL_REQUEST_PROFILE_BUTTONS);
if (retval)
return retval;
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return pyra_sysfs_read(fp, kobj, buf, off, count,
PYRA_SIZE_PROFILE_BUTTONS,
PYRA_COMMAND_PROFILE_BUTTONS);
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}
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#define PROFILE_ATTR(number) \
static struct bin_attribute bin_attr_profile##number##_settings = { \
.attr = { .name = "profile" #number "_settings", .mode = 0440 }, \
.size = PYRA_SIZE_PROFILE_SETTINGS, \
.read = pyra_sysfs_read_profilex_settings, \
.private = &profile_numbers[number-1], \
}; \
static struct bin_attribute bin_attr_profile##number##_buttons = { \
.attr = { .name = "profile" #number "_buttons", .mode = 0440 }, \
.size = PYRA_SIZE_PROFILE_BUTTONS, \
.read = pyra_sysfs_read_profilex_buttons, \
.private = &profile_numbers[number-1], \
};
PROFILE_ATTR(1);
PROFILE_ATTR(2);
PROFILE_ATTR(3);
PROFILE_ATTR(4);
PROFILE_ATTR(5);
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static ssize_t pyra_sysfs_write_settings(struct file *fp,
struct kobject *kobj, struct bin_attribute *attr, char *buf,
loff_t off, size_t count)
{
struct device *dev =
container_of(kobj, struct device, kobj)->parent->parent;
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval = 0;
struct pyra_roccat_report roccat_report;
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struct pyra_settings const *settings;
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if (off != 0 || count != PYRA_SIZE_SETTINGS)
return -EINVAL;
settings = (struct pyra_settings const *)buf;
if (settings->startup_profile >= ARRAY_SIZE(pyra->profile_settings))
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return -EINVAL;
mutex_lock(&pyra->pyra_lock);
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retval = pyra_set_settings(usb_dev, settings);
if (retval) {
mutex_unlock(&pyra->pyra_lock);
return retval;
}
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profile_activated(pyra, settings->startup_profile);
roccat_report.type = PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2;
roccat_report.value = settings->startup_profile + 1;
roccat_report.key = 0;
roccat_report_event(pyra->chrdev_minor,
(uint8_t const *)&roccat_report);
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mutex_unlock(&pyra->pyra_lock);
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return PYRA_SIZE_SETTINGS;
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}
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PYRA_SYSFS_R(settings, SETTINGS);
static struct bin_attribute bin_attr_settings =
__BIN_ATTR(settings, (S_IWUSR | S_IRUGO),
pyra_sysfs_read_settings, pyra_sysfs_write_settings,
PYRA_SIZE_SETTINGS);
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static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pyra_device *pyra =
hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
}
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static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);
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static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pyra_device *pyra =
hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
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struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
struct pyra_settings settings;
mutex_lock(&pyra->pyra_lock);
roccat_common2_receive(usb_dev, PYRA_COMMAND_SETTINGS,
&settings, PYRA_SIZE_SETTINGS);
mutex_unlock(&pyra->pyra_lock);
return snprintf(buf, PAGE_SIZE, "%d\n", settings.startup_profile);
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}
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static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
static DEVICE_ATTR(startup_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
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static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
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struct pyra_device *pyra;
struct usb_device *usb_dev;
struct pyra_info info;
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dev = dev->parent->parent;
pyra = hid_get_drvdata(dev_get_drvdata(dev));
usb_dev = interface_to_usbdev(to_usb_interface(dev));
mutex_lock(&pyra->pyra_lock);
roccat_common2_receive(usb_dev, PYRA_COMMAND_INFO,
&info, PYRA_SIZE_INFO);
mutex_unlock(&pyra->pyra_lock);
return snprintf(buf, PAGE_SIZE, "%d\n", info.firmware_version);
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}
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static DEVICE_ATTR(firmware_version, 0440, pyra_sysfs_show_firmware_version,
NULL);
static struct attribute *pyra_attrs[] = {
&dev_attr_actual_cpi.attr,
&dev_attr_actual_profile.attr,
&dev_attr_firmware_version.attr,
&dev_attr_startup_profile.attr,
NULL,
};
static struct bin_attribute *pyra_bin_attributes[] = {
&bin_attr_control,
&bin_attr_info,
&bin_attr_profile_settings,
&bin_attr_profile_buttons,
&bin_attr_settings,
&bin_attr_profile1_settings,
&bin_attr_profile2_settings,
&bin_attr_profile3_settings,
&bin_attr_profile4_settings,
&bin_attr_profile5_settings,
&bin_attr_profile1_buttons,
&bin_attr_profile2_buttons,
&bin_attr_profile3_buttons,
&bin_attr_profile4_buttons,
&bin_attr_profile5_buttons,
NULL,
};
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static const struct attribute_group pyra_group = {
.attrs = pyra_attrs,
.bin_attrs = pyra_bin_attributes,
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};
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static const struct attribute_group *pyra_groups[] = {
&pyra_group,
NULL,
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};
static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
struct pyra_device *pyra)
{
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struct pyra_settings settings;
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int retval, i;
mutex_init(&pyra->pyra_lock);
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retval = pyra_get_settings(usb_dev, &settings);
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if (retval)
return retval;
for (i = 0; i < 5; ++i) {
retval = pyra_get_profile_settings(usb_dev,
&pyra->profile_settings[i], i);
if (retval)
return retval;
}
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profile_activated(pyra, settings.startup_profile);
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return 0;
}
static int pyra_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 pyra_device *pyra;
int retval;
if (intf->cur_altsetting->desc.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_MOUSE) {
pyra = kzalloc(sizeof(*pyra), GFP_KERNEL);
if (!pyra) {
hid_err(hdev, "can't alloc device descriptor\n");
return -ENOMEM;
}
hid_set_drvdata(hdev, pyra);
retval = pyra_init_pyra_device_struct(usb_dev, pyra);
if (retval) {
hid_err(hdev, "couldn't init struct pyra_device\n");
goto exit_free;
}
retval = roccat_connect(pyra_class, hdev,
sizeof(struct pyra_roccat_report));
if (retval < 0) {
hid_err(hdev, "couldn't init char dev\n");
} else {
pyra->chrdev_minor = retval;
pyra->roccat_claimed = 1;
}
} else {
hid_set_drvdata(hdev, NULL);
}
return 0;
exit_free:
kfree(pyra);
return retval;
}
static void pyra_remove_specials(struct hid_device *hdev)
{
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
struct pyra_device *pyra;
if (intf->cur_altsetting->desc.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_MOUSE) {
pyra = hid_get_drvdata(hdev);
if (pyra->roccat_claimed)
roccat_disconnect(pyra->chrdev_minor);
kfree(hid_get_drvdata(hdev));
}
}
static int pyra_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 = pyra_init_specials(hdev);
if (retval) {
hid_err(hdev, "couldn't install mouse\n");
goto exit_stop;
}
return 0;
exit_stop:
hid_hw_stop(hdev);
exit:
return retval;
}
static void pyra_remove(struct hid_device *hdev)
{
pyra_remove_specials(hdev);
hid_hw_stop(hdev);
}
static void pyra_keep_values_up_to_date(struct pyra_device *pyra,
u8 const *data)
{
struct pyra_mouse_event_button const *button_event;
switch (data[0]) {
case PYRA_MOUSE_REPORT_NUMBER_BUTTON:
button_event = (struct pyra_mouse_event_button const *)data;
switch (button_event->type) {
case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
profile_activated(pyra, button_event->data1 - 1);
break;
case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
pyra->actual_cpi = button_event->data1;
break;
}
break;
}
}
static void pyra_report_to_chrdev(struct pyra_device const *pyra,
u8 const *data)
{
struct pyra_roccat_report roccat_report;
struct pyra_mouse_event_button const *button_event;
if (data[0] != PYRA_MOUSE_REPORT_NUMBER_BUTTON)
return;
button_event = (struct pyra_mouse_event_button const *)data;
switch (button_event->type) {
case PYRA_MOUSE_EVENT_BUTTON_TYPE_PROFILE_2:
case PYRA_MOUSE_EVENT_BUTTON_TYPE_CPI:
roccat_report.type = button_event->type;
roccat_report.value = button_event->data1;
roccat_report.key = 0;
roccat_report_event(pyra->chrdev_minor,
(uint8_t const *)&roccat_report);
break;
case PYRA_MOUSE_EVENT_BUTTON_TYPE_MACRO:
case PYRA_MOUSE_EVENT_BUTTON_TYPE_SHORTCUT:
case PYRA_MOUSE_EVENT_BUTTON_TYPE_QUICKLAUNCH:
if (button_event->data2 == PYRA_MOUSE_EVENT_BUTTON_PRESS) {
roccat_report.type = button_event->type;
roccat_report.key = button_event->data1;
/*
* pyra reports profile numbers with range 1-5.
* Keeping this behaviour.
*/
roccat_report.value = pyra->actual_profile + 1;
roccat_report_event(pyra->chrdev_minor,
(uint8_t const *)&roccat_report);
}
break;
}
}
static int pyra_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 pyra_device *pyra = hid_get_drvdata(hdev);
if (intf->cur_altsetting->desc.bInterfaceProtocol
!= USB_INTERFACE_PROTOCOL_MOUSE)
return 0;
if (pyra == NULL)
return 0;
pyra_keep_values_up_to_date(pyra, data);
if (pyra->roccat_claimed)
pyra_report_to_chrdev(pyra, data);
return 0;
}
static const struct hid_device_id pyra_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT,
USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
{ }
};
MODULE_DEVICE_TABLE(hid, pyra_devices);
static struct hid_driver pyra_driver = {
.name = "pyra",
.id_table = pyra_devices,
.probe = pyra_probe,
.remove = pyra_remove,
.raw_event = pyra_raw_event
};
static int __init pyra_init(void)
{
int retval;
/* class name has to be same as driver name */
pyra_class = class_create(THIS_MODULE, "pyra");
if (IS_ERR(pyra_class))
return PTR_ERR(pyra_class);
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pyra_class->dev_groups = pyra_groups;
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retval = hid_register_driver(&pyra_driver);
if (retval)
class_destroy(pyra_class);
return retval;
}
static void __exit pyra_exit(void)
{
hid_unregister_driver(&pyra_driver);
class_destroy(pyra_class);
}
module_init(pyra_init);
module_exit(pyra_exit);
MODULE_AUTHOR("Stefan Achatz");
MODULE_DESCRIPTION("USB Roccat Pyra driver");
MODULE_LICENSE("GPL v2");