| // SPDX-License-Identifier: GPL-2.0+ |
| |
| /* |
| * Quirks for I2C-HID devices that do not supply proper descriptors |
| * |
| * Copyright (c) 2018 Julian Sax <jsbc@gmx.de> |
| * |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/dmi.h> |
| #include <linux/mod_devicetable.h> |
| #include <linux/hid.h> |
| |
| #include "i2c-hid.h" |
| #include "../hid-ids.h" |
| |
| |
| struct i2c_hid_desc_override { |
| union { |
| struct i2c_hid_desc *i2c_hid_desc; |
| uint8_t *i2c_hid_desc_buffer; |
| }; |
| uint8_t *hid_report_desc; |
| unsigned int hid_report_desc_size; |
| uint8_t *i2c_name; |
| }; |
| |
| |
| /* |
| * descriptors for the SIPODEV SP1064 touchpad |
| * |
| * This device does not supply any descriptors and on windows a filter |
| * driver operates between the i2c-hid layer and the device and injects |
| * these descriptors when the device is prompted. The descriptors were |
| * extracted by listening to the i2c-hid traffic that occurs between the |
| * windows filter driver and the windows i2c-hid driver. |
| */ |
| |
| static const struct i2c_hid_desc_override sipodev_desc = { |
| .i2c_hid_desc_buffer = (uint8_t []) |
| {0x1e, 0x00, /* Length of descriptor */ |
| 0x00, 0x01, /* Version of descriptor */ |
| 0xdb, 0x01, /* Length of report descriptor */ |
| 0x21, 0x00, /* Location of report descriptor */ |
| 0x24, 0x00, /* Location of input report */ |
| 0x1b, 0x00, /* Max input report length */ |
| 0x25, 0x00, /* Location of output report */ |
| 0x11, 0x00, /* Max output report length */ |
| 0x22, 0x00, /* Location of command register */ |
| 0x23, 0x00, /* Location of data register */ |
| 0x11, 0x09, /* Vendor ID */ |
| 0x88, 0x52, /* Product ID */ |
| 0x06, 0x00, /* Version ID */ |
| 0x00, 0x00, 0x00, 0x00 /* Reserved */ |
| }, |
| |
| .hid_report_desc = (uint8_t []) |
| {0x05, 0x01, /* Usage Page (Desktop), */ |
| 0x09, 0x02, /* Usage (Mouse), */ |
| 0xA1, 0x01, /* Collection (Application), */ |
| 0x85, 0x01, /* Report ID (1), */ |
| 0x09, 0x01, /* Usage (Pointer), */ |
| 0xA1, 0x00, /* Collection (Physical), */ |
| 0x05, 0x09, /* Usage Page (Button), */ |
| 0x19, 0x01, /* Usage Minimum (01h), */ |
| 0x29, 0x02, /* Usage Maximum (02h), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x95, 0x06, /* Report Count (6), */ |
| 0x81, 0x01, /* Input (Constant), */ |
| 0x05, 0x01, /* Usage Page (Desktop), */ |
| 0x09, 0x30, /* Usage (X), */ |
| 0x09, 0x31, /* Usage (Y), */ |
| 0x15, 0x81, /* Logical Minimum (-127), */ |
| 0x25, 0x7F, /* Logical Maximum (127), */ |
| 0x75, 0x08, /* Report Size (8), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x81, 0x06, /* Input (Variable, Relative), */ |
| 0xC0, /* End Collection, */ |
| 0xC0, /* End Collection, */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x09, 0x05, /* Usage (Touchpad), */ |
| 0xA1, 0x01, /* Collection (Application), */ |
| 0x85, 0x04, /* Report ID (4), */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x09, 0x22, /* Usage (Finger), */ |
| 0xA1, 0x02, /* Collection (Logical), */ |
| 0x15, 0x00, /* Logical Minimum (0), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0x09, 0x47, /* Usage (Touch Valid), */ |
| 0x09, 0x42, /* Usage (Tip Switch), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x75, 0x03, /* Report Size (3), */ |
| 0x25, 0x05, /* Logical Maximum (5), */ |
| 0x09, 0x51, /* Usage (Contact Identifier), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x03, /* Report Count (3), */ |
| 0x81, 0x03, /* Input (Constant, Variable), */ |
| 0x05, 0x01, /* Usage Page (Desktop), */ |
| 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ |
| 0x75, 0x10, /* Report Size (16), */ |
| 0x55, 0x0E, /* Unit Exponent (14), */ |
| 0x65, 0x11, /* Unit (Centimeter), */ |
| 0x09, 0x30, /* Usage (X), */ |
| 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ |
| 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ |
| 0x09, 0x31, /* Usage (Y), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x09, 0x22, /* Usage (Finger), */ |
| 0xA1, 0x02, /* Collection (Logical), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0x09, 0x47, /* Usage (Touch Valid), */ |
| 0x09, 0x42, /* Usage (Tip Switch), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x75, 0x03, /* Report Size (3), */ |
| 0x25, 0x05, /* Logical Maximum (5), */ |
| 0x09, 0x51, /* Usage (Contact Identifier), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x03, /* Report Count (3), */ |
| 0x81, 0x03, /* Input (Constant, Variable), */ |
| 0x05, 0x01, /* Usage Page (Desktop), */ |
| 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ |
| 0x75, 0x10, /* Report Size (16), */ |
| 0x09, 0x30, /* Usage (X), */ |
| 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ |
| 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ |
| 0x09, 0x31, /* Usage (Y), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x09, 0x22, /* Usage (Finger), */ |
| 0xA1, 0x02, /* Collection (Logical), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0x09, 0x47, /* Usage (Touch Valid), */ |
| 0x09, 0x42, /* Usage (Tip Switch), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x75, 0x03, /* Report Size (3), */ |
| 0x25, 0x05, /* Logical Maximum (5), */ |
| 0x09, 0x51, /* Usage (Contact Identifier), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x03, /* Report Count (3), */ |
| 0x81, 0x03, /* Input (Constant, Variable), */ |
| 0x05, 0x01, /* Usage Page (Desktop), */ |
| 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ |
| 0x75, 0x10, /* Report Size (16), */ |
| 0x09, 0x30, /* Usage (X), */ |
| 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ |
| 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ |
| 0x09, 0x31, /* Usage (Y), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x09, 0x22, /* Usage (Finger), */ |
| 0xA1, 0x02, /* Collection (Logical), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0x09, 0x47, /* Usage (Touch Valid), */ |
| 0x09, 0x42, /* Usage (Tip Switch), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x75, 0x03, /* Report Size (3), */ |
| 0x25, 0x05, /* Logical Maximum (5), */ |
| 0x09, 0x51, /* Usage (Contact Identifier), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x03, /* Report Count (3), */ |
| 0x81, 0x03, /* Input (Constant, Variable), */ |
| 0x05, 0x01, /* Usage Page (Desktop), */ |
| 0x26, 0x44, 0x0A, /* Logical Maximum (2628), */ |
| 0x75, 0x10, /* Report Size (16), */ |
| 0x09, 0x30, /* Usage (X), */ |
| 0x46, 0x1A, 0x04, /* Physical Maximum (1050), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x46, 0xBC, 0x02, /* Physical Maximum (700), */ |
| 0x26, 0x34, 0x05, /* Logical Maximum (1332), */ |
| 0x09, 0x31, /* Usage (Y), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x55, 0x0C, /* Unit Exponent (12), */ |
| 0x66, 0x01, 0x10, /* Unit (Seconds), */ |
| 0x47, 0xFF, 0xFF, 0x00, 0x00,/* Physical Maximum (65535), */ |
| 0x27, 0xFF, 0xFF, 0x00, 0x00,/* Logical Maximum (65535), */ |
| 0x75, 0x10, /* Report Size (16), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x09, 0x56, /* Usage (Scan Time), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x09, 0x54, /* Usage (Contact Count), */ |
| 0x25, 0x7F, /* Logical Maximum (127), */ |
| 0x75, 0x08, /* Report Size (8), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x05, 0x09, /* Usage Page (Button), */ |
| 0x09, 0x01, /* Usage (01h), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x81, 0x02, /* Input (Variable), */ |
| 0x95, 0x07, /* Report Count (7), */ |
| 0x81, 0x03, /* Input (Constant, Variable), */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x85, 0x02, /* Report ID (2), */ |
| 0x09, 0x55, /* Usage (Contact Count Maximum), */ |
| 0x09, 0x59, /* Usage (59h), */ |
| 0x75, 0x04, /* Report Size (4), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x25, 0x0F, /* Logical Maximum (15), */ |
| 0xB1, 0x02, /* Feature (Variable), */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x85, 0x07, /* Report ID (7), */ |
| 0x09, 0x60, /* Usage (60h), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0xB1, 0x02, /* Feature (Variable), */ |
| 0x95, 0x07, /* Report Count (7), */ |
| 0xB1, 0x03, /* Feature (Constant, Variable), */ |
| 0x85, 0x06, /* Report ID (6), */ |
| 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */ |
| 0x09, 0xC5, /* Usage (C5h), */ |
| 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ |
| 0x75, 0x08, /* Report Size (8), */ |
| 0x96, 0x00, 0x01, /* Report Count (256), */ |
| 0xB1, 0x02, /* Feature (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x06, 0x00, 0xFF, /* Usage Page (FF00h), */ |
| 0x09, 0x01, /* Usage (01h), */ |
| 0xA1, 0x01, /* Collection (Application), */ |
| 0x85, 0x0D, /* Report ID (13), */ |
| 0x26, 0xFF, 0x00, /* Logical Maximum (255), */ |
| 0x19, 0x01, /* Usage Minimum (01h), */ |
| 0x29, 0x02, /* Usage Maximum (02h), */ |
| 0x75, 0x08, /* Report Size (8), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0xB1, 0x02, /* Feature (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x05, 0x0D, /* Usage Page (Digitizer), */ |
| 0x09, 0x0E, /* Usage (Configuration), */ |
| 0xA1, 0x01, /* Collection (Application), */ |
| 0x85, 0x03, /* Report ID (3), */ |
| 0x09, 0x22, /* Usage (Finger), */ |
| 0xA1, 0x02, /* Collection (Logical), */ |
| 0x09, 0x52, /* Usage (Device Mode), */ |
| 0x25, 0x0A, /* Logical Maximum (10), */ |
| 0x95, 0x01, /* Report Count (1), */ |
| 0xB1, 0x02, /* Feature (Variable), */ |
| 0xC0, /* End Collection, */ |
| 0x09, 0x22, /* Usage (Finger), */ |
| 0xA1, 0x00, /* Collection (Physical), */ |
| 0x85, 0x05, /* Report ID (5), */ |
| 0x09, 0x57, /* Usage (57h), */ |
| 0x09, 0x58, /* Usage (58h), */ |
| 0x75, 0x01, /* Report Size (1), */ |
| 0x95, 0x02, /* Report Count (2), */ |
| 0x25, 0x01, /* Logical Maximum (1), */ |
| 0xB1, 0x02, /* Feature (Variable), */ |
| 0x95, 0x06, /* Report Count (6), */ |
| 0xB1, 0x03, /* Feature (Constant, Variable),*/ |
| 0xC0, /* End Collection, */ |
| 0xC0 /* End Collection */ |
| }, |
| .hid_report_desc_size = 475, |
| .i2c_name = "SYNA3602:00" |
| }; |
| |
| |
| static const struct dmi_system_id i2c_hid_dmi_desc_override_table[] = { |
| { |
| .ident = "Teclast F6 Pro", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TECLAST"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "F6 Pro"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Teclast F7", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TECLAST"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "F7"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Trekstor Primebook C13", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C13"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Trekstor Primebook C11", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C11"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| /* |
| * There are at least 2 Primebook C11B versions, the older |
| * version has a product-name of "Primebook C11B", and a |
| * bios version / release / firmware revision of: |
| * V2.1.2 / 05/03/2018 / 18.2 |
| * The new version has "PRIMEBOOK C11B" as product-name and a |
| * bios version / release / firmware revision of: |
| * CFALKSW05_BIOS_V1.1.2 / 11/19/2018 / 19.2 |
| * Only the older version needs this quirk, note the newer |
| * version will not match as it has a different product-name. |
| */ |
| .ident = "Trekstor Primebook C11B", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Primebook C11B"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Trekstor SURFBOOK E11B", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "TREKSTOR"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SURFBOOK E11B"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Direkt-Tek DTLAPY116-2", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Direkt-Tek"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "DTLAPY116-2"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Direkt-Tek DTLAPY133-1", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Direkt-Tek"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "DTLAPY133-1"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Mediacom Flexbook Edge 11", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MEDIACOM"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "FlexBook edge11 - M-FBE11"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Mediacom FlexBook edge 13", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MEDIACOM"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "FlexBook_edge13-M-FBE13"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Odys Winbook 13", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AXDIA International GmbH"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "WINBOOK 13"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "iBall Aer3", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "iBall"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Aer3"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Schneider SCL142ALM", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "SCHNEIDER"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "SCL142ALM"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { |
| .ident = "Vero K147", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VERO"), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "K147"), |
| }, |
| .driver_data = (void *)&sipodev_desc |
| }, |
| { } /* Terminate list */ |
| }; |
| |
| static const struct hid_device_id i2c_hid_elan_flipped_quirks = { |
| HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_ELAN, 0x2dcd), |
| HID_QUIRK_X_INVERT | HID_QUIRK_Y_INVERT |
| }; |
| |
| /* |
| * This list contains devices which have specific issues based on the system |
| * they're on and not just the device itself. The driver_data will have a |
| * specific hid device to match against. |
| */ |
| static const struct dmi_system_id i2c_hid_dmi_quirk_table[] = { |
| { |
| .ident = "DynaBook K50/FR", |
| .matches = { |
| DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dynabook Inc."), |
| DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "dynabook K50/FR"), |
| }, |
| .driver_data = (void *)&i2c_hid_elan_flipped_quirks, |
| }, |
| { } /* Terminate list */ |
| }; |
| |
| |
| struct i2c_hid_desc *i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name) |
| { |
| struct i2c_hid_desc_override *override; |
| const struct dmi_system_id *system_id; |
| |
| system_id = dmi_first_match(i2c_hid_dmi_desc_override_table); |
| if (!system_id) |
| return NULL; |
| |
| override = system_id->driver_data; |
| if (strcmp(override->i2c_name, i2c_name)) |
| return NULL; |
| |
| return override->i2c_hid_desc; |
| } |
| |
| char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name, |
| unsigned int *size) |
| { |
| struct i2c_hid_desc_override *override; |
| const struct dmi_system_id *system_id; |
| |
| system_id = dmi_first_match(i2c_hid_dmi_desc_override_table); |
| if (!system_id) |
| return NULL; |
| |
| override = system_id->driver_data; |
| if (strcmp(override->i2c_name, i2c_name)) |
| return NULL; |
| |
| *size = override->hid_report_desc_size; |
| return override->hid_report_desc; |
| } |
| |
| u32 i2c_hid_get_dmi_quirks(const u16 vendor, const u16 product) |
| { |
| u32 quirks = 0; |
| const struct dmi_system_id *system_id = |
| dmi_first_match(i2c_hid_dmi_quirk_table); |
| |
| if (system_id) { |
| const struct hid_device_id *device_id = |
| (struct hid_device_id *)(system_id->driver_data); |
| |
| if (device_id && device_id->vendor == vendor && |
| device_id->product == product) |
| quirks = device_id->driver_data; |
| } |
| |
| return quirks; |
| } |
