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![Ivan Orlov](/assets/img/avatar_default.png)
Now that the driver core allows for struct class to be in read-only memory, making all 'class' structures to be declared at build time placing them into read-only memory, instead of having to be dynamically allocated at load time. Cc: Stefan Achatz <erazor_de@users.sourceforge.net> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20230620183141.681353-3-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
231 lines
5 KiB
C
231 lines
5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Roccat Savu driver for Linux
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*
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* Copyright (c) 2012 Stefan Achatz <erazor_de@users.sourceforge.net>
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*/
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/*
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*/
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/* Roccat Savu is a gamer mouse 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-savu.h"
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x4, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile, 0x5, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(general, 0x6, 0x10);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(buttons, 0x7, 0x2f);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(macro, 0x8, 0x0823);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(info, 0x9, 0x08);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(sensor, 0xc, 0x04);
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static struct bin_attribute *savu_bin_attrs[] = {
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&bin_attr_control,
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&bin_attr_profile,
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&bin_attr_general,
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&bin_attr_buttons,
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&bin_attr_macro,
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&bin_attr_info,
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&bin_attr_sensor,
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NULL,
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};
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static const struct attribute_group savu_group = {
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.bin_attrs = savu_bin_attrs,
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};
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static const struct attribute_group *savu_groups[] = {
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&savu_group,
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NULL,
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};
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static const struct class savu_class = {
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.name = "savu",
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.dev_groups = savu_groups,
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};
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static int savu_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 roccat_common2_device *savu;
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int retval;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= USB_INTERFACE_PROTOCOL_MOUSE) {
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hid_set_drvdata(hdev, NULL);
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return 0;
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}
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savu = kzalloc(sizeof(*savu), GFP_KERNEL);
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if (!savu) {
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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, savu);
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retval = roccat_common2_device_init_struct(usb_dev, savu);
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if (retval) {
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hid_err(hdev, "couldn't init Savu device\n");
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goto exit_free;
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}
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retval = roccat_connect(&savu_class, hdev,
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sizeof(struct savu_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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savu->chrdev_minor = retval;
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savu->roccat_claimed = 1;
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}
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return 0;
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exit_free:
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kfree(savu);
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return retval;
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}
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static void savu_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 roccat_common2_device *savu;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= USB_INTERFACE_PROTOCOL_MOUSE)
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return;
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savu = hid_get_drvdata(hdev);
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if (savu->roccat_claimed)
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roccat_disconnect(savu->chrdev_minor);
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kfree(savu);
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}
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static int savu_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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if (!hid_is_usb(hdev))
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return -EINVAL;
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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 = savu_init_specials(hdev);
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if (retval) {
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hid_err(hdev, "couldn't install mouse\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 savu_remove(struct hid_device *hdev)
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{
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savu_remove_specials(hdev);
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hid_hw_stop(hdev);
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}
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static void savu_report_to_chrdev(struct roccat_common2_device const *savu,
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u8 const *data)
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{
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struct savu_roccat_report roccat_report;
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struct savu_mouse_report_special const *special_report;
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if (data[0] != SAVU_MOUSE_REPORT_NUMBER_SPECIAL)
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return;
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special_report = (struct savu_mouse_report_special const *)data;
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roccat_report.type = special_report->type;
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roccat_report.data[0] = special_report->data[0];
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roccat_report.data[1] = special_report->data[1];
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roccat_report_event(savu->chrdev_minor,
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(uint8_t const *)&roccat_report);
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}
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static int savu_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 roccat_common2_device *savu = hid_get_drvdata(hdev);
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= USB_INTERFACE_PROTOCOL_MOUSE)
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return 0;
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if (savu == NULL)
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return 0;
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if (savu->roccat_claimed)
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savu_report_to_chrdev(savu, data);
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return 0;
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}
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static const struct hid_device_id savu_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, savu_devices);
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static struct hid_driver savu_driver = {
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.name = "savu",
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.id_table = savu_devices,
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.probe = savu_probe,
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.remove = savu_remove,
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.raw_event = savu_raw_event
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};
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static int __init savu_init(void)
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{
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int retval;
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retval = class_register(&savu_class);
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if (retval)
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return retval;
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retval = hid_register_driver(&savu_driver);
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if (retval)
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class_unregister(&savu_class);
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return retval;
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}
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static void __exit savu_exit(void)
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{
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hid_unregister_driver(&savu_driver);
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class_unregister(&savu_class);
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}
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module_init(savu_init);
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module_exit(savu_exit);
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MODULE_AUTHOR("Stefan Achatz");
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MODULE_DESCRIPTION("USB Roccat Savu driver");
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MODULE_LICENSE("GPL v2");
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