HID: logitech: add report descriptor for Driving Force wheel (54bfe3f0) · Commits · EulixOS / Software / Kernel

drivers/hid/hid-lg.c

+96 −5

Original line number	Diff line number	Diff line
		@@ -21,8 +21,10 @@
		#include <linux/module.h>
		#include <linux/random.h>
		#include <linux/sched.h>
		#include <linux/usb.h>
		#include <linux/wait.h>

		#include "usbhid/usbhid.h"
		#include "hid-ids.h"
		#include "hid-lg.h"

		@@ -40,17 +42,83 @@
		#define LG_FF3 0x1000
		#define LG_FF4 0x2000

		/* Size of the original descriptor of the Driving Force Pro wheel */
		/* Size of the original descriptors of the Driving Force (and Pro) wheels */
		#define DF_RDESC_ORIG_SIZE 130
		#define DFP_RDESC_ORIG_SIZE 97

		/* Fixed report descriptor for Logitech Driving Force Pro wheel controller
		/* Fixed report descriptors for Logitech Driving Force (and Pro)
		* wheel controllers
		*
		* The original descriptor hides the separate throttle and brake axes in
		* The original descriptors hide the separate throttle and brake axes in
		* a custom vendor usage page, providing only a combined value as
		* GenericDesktop.Y.
		* This descriptor removes the combined Y axis and instead reports
		* These descriptors remove the combined Y axis and instead report
		* separate throttle (Y) and brake (RZ).
		*/
		static __u8 df_rdesc_fixed[] = {
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x04, /* Usage (Joystik), */
		0xA1, 0x01, /* Collection (Application), */
		0xA1, 0x02, /* Collection (Logical), */
		0x95, 0x01, /* Report Count (1), */
		0x75, 0x0A, /* Report Size (10), */
		0x14, /* Logical Minimum (0), */
		0x26, 0xFF, 0x03, /* Logical Maximum (1023), */
		0x34, /* Physical Minimum (0), */
		0x46, 0xFF, 0x03, /* Physical Maximum (1023), */
		0x09, 0x30, /* Usage (X), */
		0x81, 0x02, /* Input (Variable), */
		0x95, 0x0C, /* Report Count (12), */
		0x75, 0x01, /* Report Size (1), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x45, 0x01, /* Physical Maximum (1), */
		0x05, 0x09, /* Usage (Buttons), */
		0x19, 0x01, /* Usage Minimum (1), */
		0x29, 0x0c, /* Usage Maximum (12), */
		0x81, 0x02, /* Input (Variable), */
		0x95, 0x02, /* Report Count (2), */
		0x06, 0x00, 0xFF, /* Usage Page (Vendor: 65280), */
		0x09, 0x01, /* Usage (?: 1), */
		0x81, 0x02, /* Input (Variable), */
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x31, /* Usage (Y), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x46, 0xFF, 0x00, /* Physical Maximum (255), */
		0x95, 0x01, /* Report Count (1), */
		0x75, 0x08, /* Report Size (8), */
		0x81, 0x02, /* Input (Variable), */
		0x25, 0x07, /* Logical Maximum (7), */
		0x46, 0x3B, 0x01, /* Physical Maximum (315), */
		0x75, 0x04, /* Report Size (4), */
		0x65, 0x14, /* Unit (Degrees), */
		0x09, 0x39, /* Usage (Hat Switch), */
		0x81, 0x42, /* Input (Variable, Null State), */
		0x75, 0x01, /* Report Size (1), */
		0x95, 0x04, /* Report Count (4), */
		0x65, 0x00, /* Unit (none), */
		0x06, 0x00, 0xFF, /* Usage Page (Vendor: 65280), */
		0x09, 0x01, /* Usage (?: 1), */
		0x25, 0x01, /* Logical Maximum (1), */
		0x45, 0x01, /* Physical Maximum (1), */
		0x81, 0x02, /* Input (Variable), */
		0x95, 0x02, /* Report Count (2), */
		0x75, 0x08, /* Report Size (8), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x46, 0xFF, 0x00, /* Physical Maximum (255), */
		0x09, 0x02, /* Usage (?: 2), */
		0x81, 0x02, /* Input (Variable), */
		0xC0, /* End Collection, */
		0xA1, 0x02, /* Collection (Logical), */
		0x26, 0xFF, 0x00, /* Logical Maximum (255), */
		0x46, 0xFF, 0x00, /* Physical Maximum (255), */
		0x95, 0x07, /* Report Count (7), */
		0x75, 0x08, /* Report Size (8), */
		0x09, 0x03, /* Usage (?: 3), */
		0x91, 0x02, /* Output (Variable), */
		0xC0, /* End Collection, */
		0xC0 /* End Collection */
		};

		static __u8 dfp_rdesc_fixed[] = {
		0x05, 0x01, /* Usage Page (Desktop), */
		0x09, 0x04, /* Usage (Joystik), */
		@@ -99,7 +167,6 @@ static __u8 dfp_rdesc_fixed[] = {
		0xC0 /* End Collection */
		};


		/*
		* Certain Logitech keyboards send in report #3 keys which are far
		* above the logical maximum described in descriptor. This extends
		@@ -109,6 +176,8 @@ static __u8 lg_report_fixup(struct hid_device hdev, __u8 *rdesc,
		unsigned int *rsize)
		{
		struct lg_drv_data *drv_data = hid_get_drvdata(hdev);
		struct usb_device_descriptor *udesc;
		__u16 bcdDevice, rev_maj, rev_min;

		if ((drv_data->quirks & LG_RDESC) && *rsize >= 90 && rdesc[83] == 0x26 &&
		rdesc[84] == 0x8c && rdesc[85] == 0x02) {
		@@ -135,6 +204,28 @@ static __u8 lg_report_fixup(struct hid_device hdev, __u8 *rdesc,
		}

		switch (hdev->product) {

		/* Several wheels report as this id when operating in emulation mode. */
		case USB_DEVICE_ID_LOGITECH_WHEEL:
		udesc = &(hid_to_usb_dev(hdev)->descriptor);
		if (!udesc) {
		hid_err(hdev, "NULL USB device descriptor\n");
		break;
		}
		bcdDevice = le16_to_cpu(udesc->bcdDevice);
		rev_maj = bcdDevice >> 8;
		rev_min = bcdDevice & 0xff;

		/* Update the report descriptor for only the Driving Force wheel */
		if (rev_maj == 1 && rev_min == 2 &&
		*rsize == DF_RDESC_ORIG_SIZE) {
		hid_info(hdev,
		"fixing up Logitech Driving Force report descriptor\n");
		rdesc = df_rdesc_fixed;
		*rsize = sizeof(df_rdesc_fixed);
		}
		break;

		case USB_DEVICE_ID_LOGITECH_DFP_WHEEL:
		if (*rsize == DFP_RDESC_ORIG_SIZE) {
		hid_info(hdev,