Hello, I'm trying to add my hid driver, `hid-tminit.c', to Linux Kernel. I've added the C file in the folder `drivers/hid/` and then I added `config HID_TMINIT' to `Kconfig' and `obj-$(CONIFG_HID_TMINIT) += hid-tminit.o' to the Makefile. Finally I've used `make menuconfig' to enable my driver, which added `CONFIG_HID_TMINIT=m' to my `.config'. But when running `make' or `make M=drivers/hid' all C files are built but mine! Running `make drivers/hid/hid-tminit.o' gives the no rule error, localizated in my system language: `Nessuna regola per generare l'obiettivo «drivers/hid/hid-tminit.o». Arresto.'. What am I doing wrong? --- drivers/hid/Kconfig | 14 ++ drivers/hid/Makefile | 1 + drivers/hid/hid-quirks.c | 3 + drivers/hid/hid-tminit.c | 368 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 386 insertions(+) create mode 100644 drivers/hid/hid-tminit.c diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 09fa75a2b289..2afc63b8d37e 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -1037,6 +1037,20 @@ config THRUSTMASTER_FF a THRUSTMASTER Dual Trigger 3-in-1 or a THRUSTMASTER Ferrari GT Rumble Force or Force Feedback Wheel. +config HID_TMINIT + tristate "Thrustmaster FFB Wheel initialization" + depends on USB_HID + help + Say Y here if you want to enable support for properly initialize some + Thrustmaster wheels that appear like a "Thrustmaster FFB Wheel" + (0x044f:0xb65d) to the host. + + Currently supporting: + - T150RS + - T300RS + - T300 Ferrari Alcantara Edition + - T500RS + config HID_UDRAW_PS3 tristate "THQ PS3 uDraw tablet" depends on HID diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile index 014d21fe7dac..51cd91040081 100644 --- a/drivers/hid/Makefile +++ b/drivers/hid/Makefile @@ -112,6 +112,7 @@ obj-$(CONFIG_HID_STEELSERIES) += hid-steelseries.o obj-$(CONFIG_HID_SUNPLUS) += hid-sunplus.o obj-$(CONFIG_HID_GREENASIA) += hid-gaff.o obj-$(CONFIG_HID_THRUSTMASTER) += hid-tmff.o +obj-$(CONIFG_HID_TMINIT) += hid-tminit.o obj-$(CONFIG_HID_TIVO) += hid-tivo.o obj-$(CONFIG_HID_TOPSEED) += hid-topseed.o obj-$(CONFIG_HID_TWINHAN) += hid-twinhan.o diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c index d9ca874dffac..5b97fa2ebb9e 100644 --- a/drivers/hid/hid-quirks.c +++ b/drivers/hid/hid-quirks.c @@ -662,6 +662,9 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) }, #endif +#if IS_ENABLED(CONFIG_HID_TMINIT) + { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65d) }, +#endif #if IS_ENABLED(CONFIG_HID_TIVO) { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) }, { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) }, diff --git a/drivers/hid/hid-tminit.c b/drivers/hid/hid-tminit.c new file mode 100644 index 000000000000..0ce327a23a45 --- /dev/null +++ b/drivers/hid/hid-tminit.c @@ -0,0 +1,368 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * When connected to the machine, the Thrustmaster wheels appear as + * a «generic» hid gamepad called "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) 2020-2021 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> + +/** + * These interrupts are used to prevent a nasty crash when initializing the + * T300RS. Used in tminit_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 + * endianess, the USB protocols always use + * little endian; the macro cpu_to_le[BIT]() + * must be used when preparing USB packets + * and vice-versa + */ +struct th_wheel_info { + uint16_t wheel_type; + + /** 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; +}; + +/** + * All wheel I know. TO BE TESTED + */ +static const struct th_wheel_info th_wheels_infos[] = { + {0x0306, 0x0006, "Thrustmaster T150RS"}, + {0x0206, 0x0005, "Thrustmaster T300RS"}, + {0x0204, 0x0005, "Thrustmaster T300 Ferrari Alcantara Edition"}, + {0x0002, 0x0002, "Thrustmaster T500RS"}, + {0x0407, 0x0001, "Thrustmaster TMX"} +}; + +static const uint8_t th_wheels_infos_length = 5; + +/** + * 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 + */ + uint16_t model; + + uint16_t field2; + uint16_t field3; + uint16_t field4; + uint16_t field5; + } a; + struct __packed { + uint16_t field0; + uint16_t field1; + uint16_t model; + } b; + } data; +}; + +struct tm_wheel { + struct usb_device *usb_dev; + 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 tminit_interrupts(struct hid_device *hdev) +{ + int ret, trans, i, b_ep; + u8 *send_buf = kmalloc(256, GFP_KERNEL); + struct usb_host_endpoint *ep; + struct device *dev = &hdev->dev; + struct usb_interface *usbif = to_usb_interface(dev->parent); + struct usb_device *usbdev = interface_to_usbdev(usbif); + + if (!send_buf) { + hid_err(hdev, "failed allocating send buffer\n"); + return; + } + + ep = &usbif->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(usbdev, + usb_sndintpipe(usbdev, b_ep), + send_buf, + setup_arr_sizes[i], + &trans, + USB_CTRL_SET_TIMEOUT); + + if (ret) { + hid_err(hdev, "setup data couldn't be sent\n"); + return; + } + } + + kfree(send_buf); +} + +static void tminit_change_handler(struct urb *urb) +{ + struct hid_device *hdev = urb->context; + + // The wheel seems to kill himself before answering the host and therefore is violating the USB protocol... + if (urb->status == 0 || urb->status == -EPROTO || urb->status == -EPIPE) + hid_info(hdev, "Success?! The wheel should have been initialized!\n"); + else + hid_warn(hdev, "URB to change wheel mode seems to have failed with error %d\n", urb->status); +} + +/** + * Called by the USB subsystem when the wheel respons 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 tminit_model_handler(struct urb *urb) +{ + struct hid_device *hdev = urb->context; + struct tm_wheel *tm_wheel = hid_get_drvdata(hdev); + uint16_t model = 0; + int i, ret; + const struct th_wheel_info *twi = 0; + + if (urb->status) { + hid_err(hdev, "URB to get model id failed with error %d\n", urb->status); + return; + } + + if (tm_wheel->response->type == cpu_to_le16(0x49)) + model = le16_to_cpu(tm_wheel->response->data.a.model); + else if (tm_wheel->response->type == cpu_to_le16(0x47)) + model = le16_to_cpu(tm_wheel->response->data.b.model); + else { + hid_err(hdev, "Unknow packet type 0x%x, unable to proceed further with wheel init\n", tm_wheel->response->type); + return; + } + + for (i = 0; i < th_wheels_infos_length && !twi; i++) + if (th_wheels_infos[i].wheel_type == model) + twi = th_wheels_infos + i; + + if (twi) + hid_info(hdev, "Wheel with model id 0x%x is a %s\n", model, twi->wheel_name); + else { + hid_err(hdev, "Unknown wheel's model id 0x%x, unable to proceed further with wheel init\n", model); + return; + } + + tm_wheel->change_request->wValue = cpu_to_le16(twi->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, + 0, 0, // We do not expect any response from the wheel + tminit_change_handler, + hdev + ); + + ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); + if (ret) + hid_err(hdev, "Error %d while submitting the change URB. I am unable to initialize this wheel...\n", ret); +} + +static void tminit_remove(struct hid_device *hdev) +{ + struct tm_wheel *tm_wheel = hid_get_drvdata(hdev); + + usb_kill_urb(tm_wheel->urb); + + kfree(tm_wheel->response); + kfree(tm_wheel->model_request); + usb_free_urb(tm_wheel->urb); + kfree(tm_wheel); + + hid_hw_stop(hdev); +} + +/** + * Function called by HID when a hid Thrustmaster FFB wheel is connected to the host. + * This function starts the hid dev, 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 tminit_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + int ret = 0; + struct tm_wheel *tm_wheel = 0; + + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "parse failed with error %d\n", ret); + goto error0; + } + + 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 error0; + } + + // 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 = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + if (!tm_wheel->model_request) { + ret = -ENOMEM; + goto error3; + } + memcpy(tm_wheel->model_request, &model_request, sizeof(struct usb_ctrlrequest)); + + tm_wheel->response = kzalloc(sizeof(struct tm_wheel_response), GFP_KERNEL); + if (!tm_wheel->response) { + ret = -ENOMEM; + goto error4; + } + + tm_wheel->change_request = kzalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); + if (!tm_wheel->model_request) { + ret = -ENOMEM; + goto error5; + } + memcpy(tm_wheel->change_request, &change_request, sizeof(struct usb_ctrlrequest)); + + tm_wheel->usb_dev = interface_to_usbdev(to_usb_interface(hdev->dev.parent)); + hid_set_drvdata(hdev, tm_wheel); + + tminit_interrupts(hdev); + + 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), + tminit_model_handler, + hdev + ); + + ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); + if (ret) + hid_err(hdev, "Error %d while submitting the URB. I am unable to initialize this wheel...\n", ret); + + return ret; + +error5: kfree(tm_wheel->response); +error4: kfree(tm_wheel->model_request); +error3: usb_free_urb(tm_wheel->urb); +error2: kfree(tm_wheel); +error1: hid_hw_stop(hdev); +error0: + return ret; +} + +static const struct hid_device_id tminit_devices[] = { + { HID_USB_DEVICE(0x044f, 0xb65d)}, + {} +}; + +MODULE_DEVICE_TABLE(hid, tminit_devices); + +static struct hid_driver tminit_driver = { + .name = "hid-tminit", + .id_table = tminit_devices, + .probe = tminit_probe, + .remove = tminit_remove, +}; + +module_hid_driver(tminit_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"); + -- 2.25.1