diff options
| -rw-r--r-- | .gitignore | 5 | ||||
| -rw-r--r-- | Kbuild | 3 | ||||
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | hid-tminit.c | 66 | ||||
| -rw-r--r-- | tminit.c | 342 | ||||
| -rw-r--r-- | tminit.h | 62 | ||||
| -rw-r--r-- | usb-tminit.c | 423 |
7 files changed, 497 insertions, 405 deletions
@@ -1,4 +1,7 @@ build/* .vscode .idea - +*.o +*.ko +*.mod +*.cmd @@ -0,0 +1,3 @@ +obj-m := hid-tminit-new.o usb-tminit-new.o +hid-tminit-new-y := hid-tminit.o tminit.o +usb-tminit-new-y := usb-tminit.o tminit.o @@ -1,4 +1,3 @@ -obj-m += usb-tminit.o KDIR ?= /lib/modules/$(shell uname -r)/build all: diff --git a/hid-tminit.c b/hid-tminit.c new file mode 100644 index 0000000..a8b103e --- /dev/null +++ b/hid-tminit.c @@ -0,0 +1,66 @@ +#include <linux/hid.h> +#include "tminit.h" + +static int thrustmaster_hid_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + int ret = 0; + struct tm_wheel *tm_wheel = kzalloc(sizeof(struct tm_wheel), GFP_KERNEL); + struct usb_interface *interface = to_usb_interface(hdev->dev.parent); + + if (!tm_wheel) { + return -ENOMEM; + } + + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "parse failed with error %d\n", ret); + goto error; + } + + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); + if (ret) { + hid_err(hdev, "hw start failed with error %d\n", ret); + goto error; + } + + hid_set_drvdata(hdev, tm_wheel); + ret = thrustmaster_probe(tm_wheel, interface); + if (ret) { + goto error1; + } + + return ret; + +error1: hid_hw_stop(hdev); +error: kfree(tm_wheel); + return ret; +} + +static void thrustmaster_hid_disconnect(struct hid_device *hdev) +{ + struct tm_wheel *tm_wheel = hid_get_drvdata(hdev); + thrustmaster_disconnect(tm_wheel); + hid_hw_stop(hdev); +} + +static const struct hid_device_id thrustmaster_hid_devices[] = { + { HID_USB_DEVICE(0x044f, 0xb65d) }, + { HID_USB_DEVICE(0x044f, 0xb664) }, + { HID_USB_DEVICE(0x044f, 0xb69c) }, + {} +}; + +MODULE_DEVICE_TABLE(hid, thrustmaster_hid_devices); + +static struct hid_driver thrustmaster_driver = { + .name = "hid-thrustmaster", + .id_table = thrustmaster_hid_devices, + .probe = thrustmaster_hid_probe, + .remove = thrustmaster_hid_disconnect, +}; + +module_hid_driver(thrustmaster_driver); + +MODULE_AUTHOR("Dario Pagani <dario.pagani.146+linuxk@gmail.com>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Driver to initialize some steering wheel joysticks from Thrustmaster"); diff --git a/tminit.c b/tminit.c new file mode 100644 index 0000000..473017a --- /dev/null +++ b/tminit.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * When connected to the machine, the Thrustmaster wheels appear as + * a «generic» USB device "Thrustmaster FFB Wheel". + * + * When in this mode not every functionality of the wheel, like the force feedback, + * are available. To enable all functionalities of a Thrustmaster wheel we have to send + * to it a specific USB CONTROL request with a code different for each wheel. + * + * This driver tries to understand which model of Thrustmaster wheel the generic + * "Thrustmaster FFB Wheel" really is and then sends the appropriate control code. + * + * Copyright (c) 2020-2021 Dario Pagani <dario.pagani.146+linuxk@gmail.com> + * Copyright (c) 2020-2024 Kim Kuparinen <kimi.h.kuparinen@gmail.com> + */ +#include <linux/hid.h> +#include <linux/usb.h> +#include <linux/input.h> +#include <linux/slab.h> +#include <linux/module.h> +#include "tminit.h" + +/* + * These interrupts are used to prevent a nasty crash when initializing the + * T300RS. Used in thrustmaster_interrupts(). + */ +static const u8 setup_0[] = { 0x42, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_1[] = { 0x0a, 0x04, 0x90, 0x03, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_2[] = { 0x0a, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_3[] = { 0x0a, 0x04, 0x12, 0x10, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_4[] = { 0x0a, 0x04, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00 }; +static const u8 *const setup_arr[] = { setup_0, setup_1, setup_2, setup_3, setup_4 }; +static const unsigned int setup_arr_sizes[] = { + ARRAY_SIZE(setup_0), + ARRAY_SIZE(setup_1), + ARRAY_SIZE(setup_2), + ARRAY_SIZE(setup_3), + ARRAY_SIZE(setup_4) +}; +/* + * This struct contains for each type of + * Thrustmaster wheel + * + * Note: The values are stored in the CPU + * endianness, the USB protocols always use + * little endian; the macro cpu_to_le[BIT]() + * must be used when preparing USB packets + * and vice-versa + */ +struct tm_wheel_info { + uint8_t model; + uint8_t attachment; + + /** + * See when the USB control out packet is prepared... + * @TODO The TMX seems to require multiple control codes to switch. + */ + uint16_t switch_value; + + char const *const wheel_name; +}; + +/* + * Known wheels. + * Note: TMX does not work as it requires 2 control packets + */ +static const struct tm_wheel_info tm_wheels_infos[] = { + {0x00, 0x02, 0x0002, "Thrustmaster T500RS"}, + {0x02, 0x00, 0x0005, "Thrustmaster T300RS (Missing Attachment)"}, + {0x02, 0x03, 0x0005, "Thrustmaster T300RS (F1 attachment)"}, + {0x02, 0x04, 0x0005, "Thrustmaster T300 Ferrari Alcantara Edition"}, + {0x02, 0x06, 0x0005, "Thrustmaster T300RS"}, + {0x02, 0x09, 0x0005, "Thrustmaster T300RS (Open Wheel Attachment)"}, + {0x03, 0x06, 0x0006, "Thrustmaster T150RS"}, + {0x00, 0x09, 0x000b, "Thrustmaster T128"} + //{0x04, 0x07, 0x0001, "Thrustmaster TMX"} +}; + +static const uint8_t tm_wheels_infos_length = 8; + + +/* The control packet to send to wheel */ +static const struct usb_ctrlrequest model_request = { + .bRequestType = 0xc1, + .bRequest = 73, + .wValue = 0, + .wIndex = 0, + .wLength = cpu_to_le16(0x0010) +}; + +static const struct usb_ctrlrequest change_request = { + .bRequestType = 0x41, + .bRequest = 83, + .wValue = 0, // Will be filled by the driver + .wIndex = 0, + .wLength = 0 +}; + +/* + * On some setups initializing the T300RS crashes the kernel, + * these interrupts fix that particular issue. So far they haven't caused any + * adverse effects in other wheels. + */ +static void thrustmaster_interrupts(struct usb_device *udev, struct usb_interface *interface) +{ + int ret, trans, i, b_ep; + u8 *send_buf = kmalloc(256, GFP_KERNEL); + struct usb_host_endpoint *ep; + + if (!send_buf) { + dev_err(&interface->dev, "failed allocating send buffer\n"); + return; + } + + if (interface->cur_altsetting->desc.bNumEndpoints < 2) { + kfree(send_buf); + dev_err(&interface->dev, "Wrong number of endpoints?\n"); + return; + } + + ep = &interface->cur_altsetting->endpoint[1]; + b_ep = ep->desc.bEndpointAddress; + + for (i = 0; i < ARRAY_SIZE(setup_arr); ++i) { + memcpy(send_buf, setup_arr[i], setup_arr_sizes[i]); + + ret = usb_interrupt_msg(udev, + usb_sndintpipe(udev, b_ep), + send_buf, + setup_arr_sizes[i], + &trans, + USB_CTRL_SET_TIMEOUT); + + if (ret) { + dev_err(&interface->dev, "setup data couldn't be sent\n"); + kfree(send_buf); + return; + } + } + + kfree(send_buf); +} + +static void thrustmaster_change_handler(struct urb *urb) +{ + struct tm_wheel *tm_wheel = urb->context; + struct usb_interface *interface = tm_wheel->interface; + + // The wheel seems to kill itself before answering the host and therefore + // is violating the USB protocol... + if (urb->status == 0 || urb->status == -EPROTO || urb->status == -EPIPE) + dev_info(&interface->dev, + "Success, the wheel should have been initialized!\n"); + else + dev_warn(&interface->dev, + "URB to change wheel mode seems to have failed," + " error code %d\n", urb->status); +} + +static int thrustmaster_submit_change(struct tm_wheel *tm_wheel, uint16_t switch_value) +{ + tm_wheel->change_request->wValue = cpu_to_le16(switch_value); + usb_fill_control_urb( + tm_wheel->urb, + tm_wheel->usb_dev, + usb_sndctrlpipe(tm_wheel->usb_dev, 0), + (char *)tm_wheel->change_request, + NULL, 0, // We do not expect any response from the wheel + thrustmaster_change_handler, + tm_wheel + ); + + int ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); + if (ret) + dev_err(&tm_wheel->interface->dev, + "Error %d while submitting the change URB." + " Unable to initialize this wheel.\n", + ret); + + return ret; +} + +/* + * Called by the USB subsystem when the wheel responses to our request + * to get [what it seems to be] the wheel's model. + * + * If the model id is recognized then we send an opportune USB CONTROL REQUEST + * to switch the wheel to its full capabilities + */ +static void thrustmaster_model_handler(struct urb *urb) +{ + uint8_t model = 0; + uint8_t attachment = 0; + uint8_t attachment_found; + int i; + const struct tm_wheel_info *twi = NULL; + struct tm_wheel *tm_wheel = urb->context; + struct usb_interface *interface = tm_wheel->interface; + + if (urb->status) { + dev_err(&interface->dev, "URB to get model id failed with error %d\n", urb->status); + return; + } + + if (tm_wheel->response->type == cpu_to_le16(0x49)) { + model = tm_wheel->response->data.a.model; + attachment = tm_wheel->response->data.a.attachment; + } else if (tm_wheel->response->type == cpu_to_le16(0x47)) { + model = tm_wheel->response->data.b.model; + attachment = tm_wheel->response->data.b.attachment; + } else { + dev_err(&interface->dev, + "Unknown packet type 0x%x, unable to proceed further\n", + tm_wheel->response->type); + return; + } + + for (i = 0; i < tm_wheels_infos_length && !twi; i++) + if (tm_wheels_infos[i].model == model) + twi = tm_wheels_infos + i; + + if (twi) { + // Trying to find the best attachment + for (attachment_found = twi->attachment == attachment; !attachment_found && i < tm_wheels_infos_length && tm_wheels_infos[i].model == model; i++) + if (tm_wheels_infos[i].attachment == attachment) { + twi = tm_wheels_infos + i; + attachment_found = 1; + } + + dev_info(&interface->dev, + "Wheel with (model, attachment) = (0x%x, 0x%x) is a %s." + " attachment_found=%u\n", + model, attachment, twi->wheel_name, attachment_found); + } else { + dev_err(&interface->dev, "Unknown wheel's model id 0x%x," + " unable to proceed further\n", model); + return; + } + + thrustmaster_submit_change(tm_wheel, twi->switch_value); +} + +void thrustmaster_disconnect(struct tm_wheel *tm_wheel) +{ + usb_kill_urb(tm_wheel->urb); + + kfree(tm_wheel->change_request); + kfree(tm_wheel->response); + kfree(tm_wheel->model_request); + usb_free_urb(tm_wheel->urb); + kfree(tm_wheel); +} + +/* + * Function called by USB when a usb Thrustmaster FFB wheel is connected to the host. + * This function tries to allocate the tm_wheel data structure and + * finally send an USB CONTROL REQUEST to the wheel to get [what it seems to be] its + * model type. + */ +int thrustmaster_probe(struct tm_wheel *tm_wheel, struct usb_interface *interface) +{ + int ret = 0; + struct usb_device *udev = NULL; + + udev = usb_get_dev(interface_to_usbdev(interface)); + + + tm_wheel->urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!tm_wheel->urb) { + ret = -ENOMEM; + goto error2; + } + + tm_wheel->model_request = kmemdup(&model_request, + sizeof(struct usb_ctrlrequest), + GFP_KERNEL); + if (!tm_wheel->model_request) { + ret = -ENOMEM; + goto error3; + } + + tm_wheel->response = kzalloc(sizeof(struct tm_wheel_response), GFP_KERNEL); + if (!tm_wheel->response) { + ret = -ENOMEM; + goto error4; + } + + tm_wheel->change_request = kmemdup(&change_request, + sizeof(struct usb_ctrlrequest), + GFP_KERNEL); + if (!tm_wheel->change_request) { + ret = -ENOMEM; + goto error5; + } + + tm_wheel->usb_dev = udev; + tm_wheel->interface = usb_get_intf(interface); + + switch (le16_to_cpu(udev->descriptor.idProduct)) { + case 0xb69c: + /* T128 resets itself for whatever reason, try to + * circumvent it. Ugly magic constant, should probably add a + * define or something */ + ret = thrustmaster_submit_change(tm_wheel, 0x000b); + if (ret) + goto error6; + + return ret; + } + + thrustmaster_interrupts(udev, interface); + + usb_fill_control_urb( + tm_wheel->urb, + tm_wheel->usb_dev, + usb_rcvctrlpipe(tm_wheel->usb_dev, 0), + (char *)tm_wheel->model_request, + tm_wheel->response, + sizeof(struct tm_wheel_response), + thrustmaster_model_handler, + tm_wheel + ); + + ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); + if (ret) { + dev_err(&interface->dev, + "Error %d while submitting the URB." + " Unable to initialize this wheel.\n", ret); + goto error6; + } + + return ret; + +error6: kfree(tm_wheel->change_request); +error5: kfree(tm_wheel->response); + usb_put_intf(tm_wheel->interface); + +error4: kfree(tm_wheel->model_request); +error3: usb_free_urb(tm_wheel->urb); +error2: usb_put_dev(udev); + return ret; +} diff --git a/tminit.h b/tminit.h new file mode 100644 index 0000000..9e4037d --- /dev/null +++ b/tminit.h @@ -0,0 +1,62 @@ +#ifndef TMINIT_H +#define TMINIT_H + +#include <linux/usb.h> + +/* + * This structs contains (in little endian) the response data + * of the wheel to the request 73 + * + * A sufficient research to understand what each field does is not + * beign conducted yet. The position and meaning of fields are a + * just a very optimistic guess based on instinct.... + */ +struct __packed tm_wheel_response +{ + /* + * Seems to be the type of packet + * - 0x0049 if is data.a (15 bytes) + * - 0x0047 if is data.b (7 bytes) + */ + uint16_t type; + + union { + struct __packed { + uint16_t field0; + uint16_t field1; + /* + * Seems to be the model code of the wheel + * Read table thrustmaster_wheels to values + */ + uint8_t attachment; + uint8_t model; + + uint16_t field2; + uint16_t field3; + uint16_t field4; + uint16_t field5; + } a; + struct __packed { + uint16_t field0; + uint16_t field1; + uint8_t attachment; + uint8_t model; + } b; + } data; +}; + +struct tm_wheel { + struct usb_device *usb_dev; + struct usb_interface *interface; + struct urb *urb; + + struct usb_ctrlrequest *model_request; + struct tm_wheel_response *response; + + struct usb_ctrlrequest *change_request; +}; + +int thrustmaster_probe(struct tm_wheel *wheel, struct usb_interface *interface); +void thrustmaster_disconnect(struct tm_wheel *wheel); + +#endif /* TMINIT_H */ diff --git a/usb-tminit.c b/usb-tminit.c index 9fc3f56..cf0dc38 100644 --- a/usb-tminit.c +++ b/usb-tminit.c @@ -1,428 +1,46 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * When connected to the machine, the Thrustmaster wheels appear as - * a «generic» USB device "Thrustmaster FFB Wheel". - * - * When in this mode not every functionality of the wheel, like the force feedback, - * are available. To enable all functionalities of a Thrustmaster wheel we have to send - * to it a specific USB CONTROL request with a code different for each wheel. - * - * This driver tries to understand which model of Thrustmaster wheel the generic - * "Thrustmaster FFB Wheel" really is and then sends the appropriate control code. - * - * Copyright (c) 2020-2021 Dario Pagani <dario.pagani.146+linuxk@gmail.com> - * Copyright (c) 2020-2024 Kim Kuparinen <kimi.h.kuparinen@gmail.com> - */ -#include <linux/hid.h> -#include <linux/usb.h> -#include <linux/input.h> -#include <linux/slab.h> -#include <linux/module.h> +#include "tminit.h" -/* - * These interrupts are used to prevent a nasty crash when initializing the - * T300RS. Used in thrustmaster_interrupts(). - */ -static const u8 setup_0[] = { 0x42, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; -static const u8 setup_1[] = { 0x0a, 0x04, 0x90, 0x03, 0x00, 0x00, 0x00, 0x00 }; -static const u8 setup_2[] = { 0x0a, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00 }; -static const u8 setup_3[] = { 0x0a, 0x04, 0x12, 0x10, 0x00, 0x00, 0x00, 0x00 }; -static const u8 setup_4[] = { 0x0a, 0x04, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00 }; -static const u8 *const setup_arr[] = { setup_0, setup_1, setup_2, setup_3, setup_4 }; -static const unsigned int setup_arr_sizes[] = { - ARRAY_SIZE(setup_0), - ARRAY_SIZE(setup_1), - ARRAY_SIZE(setup_2), - ARRAY_SIZE(setup_3), - ARRAY_SIZE(setup_4) -}; -/* - * This struct contains for each type of - * Thrustmaster wheel - * - * Note: The values are stored in the CPU - * endianness, the USB protocols always use - * little endian; the macro cpu_to_le[BIT]() - * must be used when preparing USB packets - * and vice-versa - */ -struct tm_wheel_info { - uint8_t model; - uint8_t attachment; - - /** - * See when the USB control out packet is prepared... - * @TODO The TMX seems to require multiple control codes to switch. - */ - uint16_t switch_value; - - char const *const wheel_name; -}; - -/* - * Known wheels. - * Note: TMX does not work as it requires 2 control packets - */ -static const struct tm_wheel_info tm_wheels_infos[] = { - {0x00, 0x02, 0x0002, "Thrustmaster T500RS"}, - {0x02, 0x00, 0x0005, "Thrustmaster T300RS (Missing Attachment)"}, - {0x02, 0x03, 0x0005, "Thrustmaster T300RS (F1 attachment)"}, - {0x02, 0x04, 0x0005, "Thrustmaster T300 Ferrari Alcantara Edition"}, - {0x02, 0x06, 0x0005, "Thrustmaster T300RS"}, - {0x02, 0x09, 0x0005, "Thrustmaster T300RS (Open Wheel Attachment)"}, - {0x03, 0x06, 0x0006, "Thrustmaster T150RS"}, - {0x00, 0x09, 0x000b, "Thrustmaster T128"} - //{0x04, 0x07, 0x0001, "Thrustmaster TMX"} -}; - -static const uint8_t tm_wheels_infos_length = 8; - -/* - * This structs contains (in little endian) the response data - * of the wheel to the request 73 - * - * A sufficient research to understand what each field does is not - * beign conducted yet. The position and meaning of fields are a - * just a very optimistic guess based on instinct.... - */ -struct __packed tm_wheel_response +static int thrustmaster_usb_probe(struct usb_interface *interface, const struct usb_device_id *id) { - /* - * Seems to be the type of packet - * - 0x0049 if is data.a (15 bytes) - * - 0x0047 if is data.b (7 bytes) - */ - uint16_t type; - - union { - struct __packed { - uint16_t field0; - uint16_t field1; - /* - * Seems to be the model code of the wheel - * Read table thrustmaster_wheels to values - */ - uint8_t attachment; - uint8_t model; - - uint16_t field2; - uint16_t field3; - uint16_t field4; - uint16_t field5; - } a; - struct __packed { - uint16_t field0; - uint16_t field1; - uint8_t attachment; - uint8_t model; - } b; - } data; -}; - -struct tm_wheel { - struct usb_device *usb_dev; - struct usb_interface *interface; - struct urb *urb; - - struct usb_ctrlrequest *model_request; - struct tm_wheel_response *response; - - struct usb_ctrlrequest *change_request; -}; - -/* The control packet to send to wheel */ -static const struct usb_ctrlrequest model_request = { - .bRequestType = 0xc1, - .bRequest = 73, - .wValue = 0, - .wIndex = 0, - .wLength = cpu_to_le16(0x0010) -}; - -static const struct usb_ctrlrequest change_request = { - .bRequestType = 0x41, - .bRequest = 83, - .wValue = 0, // Will be filled by the driver - .wIndex = 0, - .wLength = 0 -}; - -/* - * On some setups initializing the T300RS crashes the kernel, - * these interrupts fix that particular issue. So far they haven't caused any - * adverse effects in other wheels. - */ -static void thrustmaster_interrupts(struct usb_device *udev, struct usb_interface *interface) -{ - int ret, trans, i, b_ep; - u8 *send_buf = kmalloc(256, GFP_KERNEL); - struct usb_host_endpoint *ep; - - if (!send_buf) { - dev_err(&interface->dev, "failed allocating send buffer\n"); - return; - } - - if (interface->cur_altsetting->desc.bNumEndpoints < 2) { - kfree(send_buf); - dev_err(&interface->dev, "Wrong number of endpoints?\n"); - return; + int ret = 0; + struct tm_wheel *tm_wheel = kzalloc(sizeof(struct tm_wheel), GFP_KERNEL); + if (!tm_wheel) { + return -ENOMEM; } - ep = &interface->cur_altsetting->endpoint[1]; - b_ep = ep->desc.bEndpointAddress; - - for (i = 0; i < ARRAY_SIZE(setup_arr); ++i) { - memcpy(send_buf, setup_arr[i], setup_arr_sizes[i]); - - ret = usb_interrupt_msg(udev, - usb_sndintpipe(udev, b_ep), - send_buf, - setup_arr_sizes[i], - &trans, - USB_CTRL_SET_TIMEOUT); - - if (ret) { - dev_err(&interface->dev, "setup data couldn't be sent\n"); - kfree(send_buf); - return; - } + usb_set_intfdata(interface, tm_wheel); + ret = thrustmaster_probe(tm_wheel, interface); + if (ret) { + goto error; } - kfree(send_buf); -} - -static void thrustmaster_change_handler(struct urb *urb) -{ - struct tm_wheel *tm_wheel = urb->context; - struct usb_interface *interface = tm_wheel->interface; - - // The wheel seems to kill itself before answering the host and therefore - // is violating the USB protocol... - if (urb->status == 0 || urb->status == -EPROTO || urb->status == -EPIPE) - dev_info(&interface->dev, - "Success, the wheel should have been initialized!\n"); - else - dev_warn(&interface->dev, - "URB to change wheel mode seems to have failed," - " error code %d\n", urb->status); -} - -static int thrustmaster_submit_change(struct tm_wheel *tm_wheel, uint16_t switch_value) -{ - tm_wheel->change_request->wValue = cpu_to_le16(switch_value); - usb_fill_control_urb( - tm_wheel->urb, - tm_wheel->usb_dev, - usb_sndctrlpipe(tm_wheel->usb_dev, 0), - (char *)tm_wheel->change_request, - NULL, 0, // We do not expect any response from the wheel - thrustmaster_change_handler, - tm_wheel - ); - - int ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); - if (ret) - dev_err(&tm_wheel->interface->dev, - "Error %d while submitting the change URB." - " Unable to initialize this wheel.\n", - ret); - return ret; -} -/* - * Called by the USB subsystem when the wheel responses to our request - * to get [what it seems to be] the wheel's model. - * - * If the model id is recognized then we send an opportune USB CONTROL REQUEST - * to switch the wheel to its full capabilities - */ -static void thrustmaster_model_handler(struct urb *urb) -{ - uint8_t model = 0; - uint8_t attachment = 0; - uint8_t attachment_found; - int i; - const struct tm_wheel_info *twi = NULL; - struct tm_wheel *tm_wheel = urb->context; - struct usb_interface *interface = tm_wheel->interface; - - if (urb->status) { - dev_err(&interface->dev, "URB to get model id failed with error %d\n", urb->status); - return; - } - - if (tm_wheel->response->type == cpu_to_le16(0x49)) { - model = tm_wheel->response->data.a.model; - attachment = tm_wheel->response->data.a.attachment; - } else if (tm_wheel->response->type == cpu_to_le16(0x47)) { - model = tm_wheel->response->data.b.model; - attachment = tm_wheel->response->data.b.attachment; - } else { - dev_err(&interface->dev, - "Unknown packet type 0x%x, unable to proceed further\n", - tm_wheel->response->type); - return; - } - - for (i = 0; i < tm_wheels_infos_length && !twi; i++) - if (tm_wheels_infos[i].model == model) - twi = tm_wheels_infos + i; - - if (twi) { - // Trying to find the best attachment - for (attachment_found = twi->attachment == attachment; !attachment_found && i < tm_wheels_infos_length && tm_wheels_infos[i].model == model; i++) - if (tm_wheels_infos[i].attachment == attachment) { - twi = tm_wheels_infos + i; - attachment_found = 1; - } - - dev_info(&interface->dev, - "Wheel with (model, attachment) = (0x%x, 0x%x) is a %s." - " attachment_found=%u\n", - model, attachment, twi->wheel_name, attachment_found); - } else { - dev_err(&interface->dev, "Unknown wheel's model id 0x%x," - " unable to proceed further\n", model); - return; - } - - thrustmaster_submit_change(tm_wheel, twi->switch_value); +error: + kfree(tm_wheel); + return ret; } -static void thrustmaster_disconnect(struct usb_interface *interface) +static void thrustmaster_usb_disconnect(struct usb_interface *interface) { struct tm_wheel *tm_wheel = usb_get_intfdata(interface); - - usb_kill_urb(tm_wheel->urb); - - kfree(tm_wheel->change_request); - kfree(tm_wheel->response); - kfree(tm_wheel->model_request); - - usb_free_urb(tm_wheel->urb); usb_put_intf(tm_wheel->interface); usb_put_dev(tm_wheel->usb_dev); - - kfree(tm_wheel); + thrustmaster_disconnect(tm_wheel); } -/* - * Function called by USB when a usb Thrustmaster FFB wheel is connected to the host. - * This function tries to allocate the tm_wheel data structure and - * finally send an USB CONTROL REQUEST to the wheel to get [what it seems to be] its - * model type. - */ -static int thrustmaster_probe(struct usb_interface *interface, const struct usb_device_id *id) -{ - int ret = 0; - struct tm_wheel *tm_wheel = NULL; - struct usb_device *udev = NULL; - - udev = usb_get_dev(interface_to_usbdev(interface)); - - // Now we allocate the tm_wheel - tm_wheel = kzalloc(sizeof(struct tm_wheel), GFP_KERNEL); - if (!tm_wheel) { - ret = -ENOMEM; - goto error1; - } - - tm_wheel->urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!tm_wheel->urb) { - ret = -ENOMEM; - goto error2; - } - - tm_wheel->model_request = kmemdup(&model_request, - sizeof(struct usb_ctrlrequest), - GFP_KERNEL); - if (!tm_wheel->model_request) { - ret = -ENOMEM; - goto error3; - } - - tm_wheel->response = kzalloc(sizeof(struct tm_wheel_response), GFP_KERNEL); - if (!tm_wheel->response) { - ret = -ENOMEM; - goto error4; - } - - tm_wheel->change_request = kmemdup(&change_request, - sizeof(struct usb_ctrlrequest), - GFP_KERNEL); - if (!tm_wheel->change_request) { - ret = -ENOMEM; - goto error5; - } - - tm_wheel->usb_dev = udev; - tm_wheel->interface = usb_get_intf(interface); - usb_set_intfdata(interface, tm_wheel); - - switch (le16_to_cpu(udev->descriptor.idProduct)) { - case 0xb69c: - /* T128 resets itself for whatever reason, try to - * circumvent it. Ugly magic constant, should probably add a - * define or something */ - ret = thrustmaster_submit_change(tm_wheel, 0x000b); - if (ret) - goto error6; - - return ret; - } - - thrustmaster_interrupts(udev, interface); - - usb_fill_control_urb( - tm_wheel->urb, - tm_wheel->usb_dev, - usb_rcvctrlpipe(tm_wheel->usb_dev, 0), - (char *)tm_wheel->model_request, - tm_wheel->response, - sizeof(struct tm_wheel_response), - thrustmaster_model_handler, - tm_wheel - ); - - ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); - if (ret) { - dev_err(&interface->dev, - "Error %d while submitting the URB." - " Unable to initialize this wheel.\n", ret); - goto error6; - } - - return ret; - -error6: kfree(tm_wheel->change_request); -error5: kfree(tm_wheel->response); - usb_put_intf(tm_wheel->interface); - -error4: kfree(tm_wheel->model_request); -error3: usb_free_urb(tm_wheel->urb); -error2: kfree(tm_wheel); -error1: usb_put_dev(udev); - return ret; -} - -static const struct usb_device_id thrustmaster_hid_devices[] = { - { USB_DEVICE_INTERFACE_CLASS(0x044f, 0xb65d, USB_CLASS_HID) }, - { USB_DEVICE_INTERFACE_CLASS(0x044f, 0xb664, USB_CLASS_HID) }, - /* seems like 0xb69c can show up either as a HID or as a USB device, maybe? */ - { USB_DEVICE_INTERFACE_CLASS(0x044f, 0xb69c, USB_CLASS_HID) }, +static const struct usb_device_id thrustmaster_usb_devices[] = { { USB_DEVICE(0x044f, 0xb69c) }, {} }; -MODULE_DEVICE_TABLE(usb, thrustmaster_hid_devices); +MODULE_DEVICE_TABLE(usb, thrustmaster_usb_devices); static struct usb_driver thrustmaster_driver = { .name = "usb-thrustmaster", - .id_table = thrustmaster_hid_devices, - .probe = thrustmaster_probe, - .disconnect = thrustmaster_disconnect, + .id_table = thrustmaster_usb_devices, + .probe = thrustmaster_usb_probe, + .disconnect = thrustmaster_usb_disconnect, }; module_usb_driver(thrustmaster_driver); @@ -430,4 +48,3 @@ module_usb_driver(thrustmaster_driver); MODULE_AUTHOR("Dario Pagani <dario.pagani.146+linuxk@gmail.com>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Driver to initialize some steering wheel joysticks from Thrustmaster"); - |