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Release 4.14 drivers/hid/hid-corsair.c

Directory: drivers/hid
/*
 * HID driver for Corsair devices
 *
 * Supported devices:
 *  - Vengeance K90 Keyboard
 *  - Scimitar PRO RGB Gaming Mouse
 *
 * Copyright (c) 2015 Clement Vuchener
 * Copyright (c) 2017 Oscar Campos
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

#include <linux/hid.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/leds.h>

#include "hid-ids.h"


#define CORSAIR_USE_K90_MACRO	(1<<0)

#define CORSAIR_USE_K90_BACKLIGHT	(1<<1)


struct k90_led {
	
struct led_classdev cdev;
	
int brightness;
	
struct work_struct work;
	
bool removed;
};


struct k90_drvdata {
	
struct k90_led record_led;
};


struct corsair_drvdata {
	
unsigned long quirks;
	
struct k90_drvdata *k90;
	
struct k90_led *backlight;
};


#define K90_GKEY_COUNT	18


static int corsair_usage_to_gkey(unsigned int usage) { /* G1 (0xd0) to G16 (0xdf) */ if (usage >= 0xd0 && usage <= 0xdf) return usage - 0xd0 + 1; /* G17 (0xe8) to G18 (0xe9) */ if (usage >= 0xe8 && usage <= 0xe9) return usage - 0xe8 + 17; return 0; }

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Clément Vuchener49100.00%1100.00%
Total49100.00%1100.00%

static unsigned short corsair_gkey_map[K90_GKEY_COUNT] = { BTN_TRIGGER_HAPPY1, BTN_TRIGGER_HAPPY2, BTN_TRIGGER_HAPPY3, BTN_TRIGGER_HAPPY4, BTN_TRIGGER_HAPPY5, BTN_TRIGGER_HAPPY6, BTN_TRIGGER_HAPPY7, BTN_TRIGGER_HAPPY8, BTN_TRIGGER_HAPPY9, BTN_TRIGGER_HAPPY10, BTN_TRIGGER_HAPPY11, BTN_TRIGGER_HAPPY12, BTN_TRIGGER_HAPPY13, BTN_TRIGGER_HAPPY14, BTN_TRIGGER_HAPPY15, BTN_TRIGGER_HAPPY16, BTN_TRIGGER_HAPPY17, BTN_TRIGGER_HAPPY18, }; module_param_array_named(gkey_codes, corsair_gkey_map, ushort, NULL, S_IRUGO); MODULE_PARM_DESC(gkey_codes, "Key codes for the G-keys"); static unsigned short corsair_record_keycodes[2] = { BTN_TRIGGER_HAPPY19, BTN_TRIGGER_HAPPY20 }; module_param_array_named(recordkey_codes, corsair_record_keycodes, ushort, NULL, S_IRUGO); MODULE_PARM_DESC(recordkey_codes, "Key codes for the MR (start and stop record) button"); static unsigned short corsair_profile_keycodes[3] = { BTN_TRIGGER_HAPPY21, BTN_TRIGGER_HAPPY22, BTN_TRIGGER_HAPPY23 }; module_param_array_named(profilekey_codes, corsair_profile_keycodes, ushort, NULL, S_IRUGO); MODULE_PARM_DESC(profilekey_codes, "Key codes for the profile buttons"); #define CORSAIR_USAGE_SPECIAL_MIN 0xf0 #define CORSAIR_USAGE_SPECIAL_MAX 0xff #define CORSAIR_USAGE_MACRO_RECORD_START 0xf6 #define CORSAIR_USAGE_MACRO_RECORD_STOP 0xf7 #define CORSAIR_USAGE_PROFILE 0xf1 #define CORSAIR_USAGE_M1 0xf1 #define CORSAIR_USAGE_M2 0xf2 #define CORSAIR_USAGE_M3 0xf3 #define CORSAIR_USAGE_PROFILE_MAX 0xf3 #define CORSAIR_USAGE_META_OFF 0xf4 #define CORSAIR_USAGE_META_ON 0xf5 #define CORSAIR_USAGE_LIGHT 0xfa #define CORSAIR_USAGE_LIGHT_OFF 0xfa #define CORSAIR_USAGE_LIGHT_DIM 0xfb #define CORSAIR_USAGE_LIGHT_MEDIUM 0xfc #define CORSAIR_USAGE_LIGHT_BRIGHT 0xfd #define CORSAIR_USAGE_LIGHT_MAX 0xfd /* USB control protocol */ #define K90_REQUEST_BRIGHTNESS 49 #define K90_REQUEST_MACRO_MODE 2 #define K90_REQUEST_STATUS 4 #define K90_REQUEST_GET_MODE 5 #define K90_REQUEST_PROFILE 20 #define K90_MACRO_MODE_SW 0x0030 #define K90_MACRO_MODE_HW 0x0001 #define K90_MACRO_LED_ON 0x0020 #define K90_MACRO_LED_OFF 0x0040 /* * LED class devices */ #define K90_BACKLIGHT_LED_SUFFIX "::backlight" #define K90_RECORD_LED_SUFFIX "::record"
static enum led_brightness k90_backlight_get(struct led_classdev *led_cdev) { int ret; struct k90_led *led = container_of(led_cdev, struct k90_led, cdev); struct device *dev = led->cdev.dev->parent; struct usb_interface *usbif = to_usb_interface(dev->parent); struct usb_device *usbdev = interface_to_usbdev(usbif); int brightness; char *data; data = kmalloc(8, GFP_KERNEL); if (!data) return -ENOMEM; ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), K90_REQUEST_STATUS, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, data, 8, USB_CTRL_SET_TIMEOUT); if (ret < 5) { dev_warn(dev, "Failed to get K90 initial state (error %d).\n", ret); ret = -EIO; goto out; } brightness = data[4]; if (brightness < 0 || brightness > 3) { dev_warn(dev, "Read invalid backlight brightness: %02hhx.\n", data[4]); ret = -EIO; goto out; } ret = brightness; out: kfree(data); return ret; }

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Clément Vuchener15678.00%133.33%
Johan Hovold4422.00%266.67%
Total200100.00%3100.00%


static enum led_brightness k90_record_led_get(struct led_classdev *led_cdev) { struct k90_led *led = container_of(led_cdev, struct k90_led, cdev); return led->brightness; }

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Clément Vuchener32100.00%1100.00%
Total32100.00%1100.00%


static void k90_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct k90_led *led = container_of(led_cdev, struct k90_led, cdev); led->brightness = brightness; schedule_work(&led->work); }

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Clément Vuchener44100.00%1100.00%
Total44100.00%1100.00%


static void k90_backlight_work(struct work_struct *work) { int ret; struct k90_led *led = container_of(work, struct k90_led, work); struct device *dev; struct usb_interface *usbif; struct usb_device *usbdev; if (led->removed) return; dev = led->cdev.dev->parent; usbif = to_usb_interface(dev->parent); usbdev = interface_to_usbdev(usbif); ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), K90_REQUEST_BRIGHTNESS, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, led->brightness, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); if (ret != 0) dev_warn(dev, "Failed to set backlight brightness (error: %d).\n", ret); }

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PersonTokensPropCommitsCommitProp
Clément Vuchener126100.00%1100.00%
Total126100.00%1100.00%


static void k90_record_led_work(struct work_struct *work) { int ret; struct k90_led *led = container_of(work, struct k90_led, work); struct device *dev; struct usb_interface *usbif; struct usb_device *usbdev; int value; if (led->removed) return; dev = led->cdev.dev->parent; usbif = to_usb_interface(dev->parent); usbdev = interface_to_usbdev(usbif); if (led->brightness > 0) value = K90_MACRO_LED_ON; else value = K90_MACRO_LED_OFF; ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), K90_REQUEST_MACRO_MODE, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); if (ret != 0) dev_warn(dev, "Failed to set record LED state (error: %d).\n", ret); }

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Clément Vuchener144100.00%1100.00%
Total144100.00%1100.00%

/* * Keyboard attributes */
static ssize_t k90_show_macro_mode(struct device *dev, struct device_attribute *attr, char *buf) { int ret; struct usb_interface *usbif = to_usb_interface(dev->parent); struct usb_device *usbdev = interface_to_usbdev(usbif); const char *macro_mode; char *data; data = kmalloc(2, GFP_KERNEL); if (!data) return -ENOMEM; ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), K90_REQUEST_GET_MODE, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, data, 2, USB_CTRL_SET_TIMEOUT); if (ret < 1) { dev_warn(dev, "Failed to get K90 initial mode (error %d).\n", ret); ret = -EIO; goto out; } switch (data[0]) { case K90_MACRO_MODE_HW: macro_mode = "HW"; break; case K90_MACRO_MODE_SW: macro_mode = "SW"; break; default: dev_warn(dev, "K90 in unknown mode: %02hhx.\n", data[0]); ret = -EIO; goto out; } ret = snprintf(buf, PAGE_SIZE, "%s\n", macro_mode); out: kfree(data); return ret; }

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Clément Vuchener15477.78%133.33%
Johan Hovold4422.22%266.67%
Total198100.00%3100.00%


static ssize_t k90_store_macro_mode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int ret; struct usb_interface *usbif = to_usb_interface(dev->parent); struct usb_device *usbdev = interface_to_usbdev(usbif); __u16 value; if (strncmp(buf, "SW", 2) == 0) value = K90_MACRO_MODE_SW; else if (strncmp(buf, "HW", 2) == 0) value = K90_MACRO_MODE_HW; else return -EINVAL; ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), K90_REQUEST_MACRO_MODE, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); if (ret != 0) { dev_warn(dev, "Failed to set macro mode.\n"); return ret; } return count; }

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Clément Vuchener145100.00%1100.00%
Total145100.00%1100.00%


static ssize_t k90_show_current_profile(struct device *dev, struct device_attribute *attr, char *buf) { int ret; struct usb_interface *usbif = to_usb_interface(dev->parent); struct usb_device *usbdev = interface_to_usbdev(usbif); int current_profile; char *data; data = kmalloc(8, GFP_KERNEL); if (!data) return -ENOMEM; ret = usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0), K90_REQUEST_STATUS, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, 0, 0, data, 8, USB_CTRL_SET_TIMEOUT); if (ret < 8) { dev_warn(dev, "Failed to get K90 initial state (error %d).\n", ret); ret = -EIO; goto out; } current_profile = data[7]; if (current_profile < 1 || current_profile > 3) { dev_warn(dev, "Read invalid current profile: %02hhx.\n", data[7]); ret = -EIO; goto out; } ret = snprintf(buf, PAGE_SIZE, "%d\n", current_profile); out: kfree(data); return ret; }

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Clément Vuchener14576.72%133.33%
Johan Hovold4423.28%266.67%
Total189100.00%3100.00%


static ssize_t k90_store_current_profile(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int ret; struct usb_interface *usbif = to_usb_interface(dev->parent); struct usb_device *usbdev = interface_to_usbdev(usbif); int profile; if (kstrtoint(buf, 10, &profile)) return -EINVAL; if (profile < 1 || profile > 3) return -EINVAL; ret = usb_control_msg(usbdev, usb_sndctrlpipe(usbdev, 0), K90_REQUEST_PROFILE, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, profile, 0, NULL, 0, USB_CTRL_SET_TIMEOUT); if (ret != 0) { dev_warn(dev, "Failed to change current profile (error %d).\n", ret); return ret; } return count; }

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Clément Vuchener137100.00%1100.00%
Total137100.00%1100.00%

static DEVICE_ATTR(macro_mode, 0644, k90_show_macro_mode, k90_store_macro_mode); static DEVICE_ATTR(current_profile, 0644, k90_show_current_profile, k90_store_current_profile); static struct attribute *k90_attrs[] = { &dev_attr_macro_mode.attr, &dev_attr_current_profile.attr, NULL }; static const struct attribute_group k90_attr_group = { .attrs = k90_attrs, }; /* * Driver functions */
static int k90_init_backlight(struct hid_device *dev) { int ret; struct corsair_drvdata *drvdata = hid_get_drvdata(dev); size_t name_sz; char *name; drvdata->backlight = kzalloc(sizeof(struct k90_led), GFP_KERNEL); if (!drvdata->backlight) { ret = -ENOMEM; goto fail_backlight_alloc; } name_sz = strlen(dev_name(&dev->dev)) + sizeof(K90_BACKLIGHT_LED_SUFFIX); name = kzalloc(name_sz, GFP_KERNEL); if (!name) { ret = -ENOMEM; goto fail_name_alloc; } snprintf(name, name_sz, "%s" K90_BACKLIGHT_LED_SUFFIX, dev_name(&dev->dev)); drvdata->backlight->removed = false; drvdata->backlight->cdev.name = name; drvdata->backlight->cdev.max_brightness = 3; drvdata->backlight->cdev.brightness_set = k90_brightness_set; drvdata->backlight->cdev.brightness_get = k90_backlight_get; INIT_WORK(&drvdata->backlight->work, k90_backlight_work); ret = led_classdev_register(&dev->dev, &drvdata->backlight->cdev); if (ret != 0) goto fail_register_cdev; return 0; fail_register_cdev: kfree(drvdata->backlight->cdev.name); fail_name_alloc: kfree(drvdata->backlight); drvdata->backlight = NULL; fail_backlight_alloc: return ret; }

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Clément Vuchener24499.59%150.00%
Jiri Kosina10.41%150.00%
Total245100.00%2100.00%


static int k90_init_macro_functions(struct hid_device *dev) { int ret; struct corsair_drvdata *drvdata = hid_get_drvdata(dev); struct k90_drvdata *k90; size_t name_sz; char *name; k90 = kzalloc(sizeof(struct k90_drvdata), GFP_KERNEL); if (!k90) { ret = -ENOMEM; goto fail_drvdata; } drvdata->k90 = k90; /* Init LED device for record LED */ name_sz = strlen(dev_name(&dev->dev)) + sizeof(K90_RECORD_LED_SUFFIX); name = kzalloc(name_sz, GFP_KERNEL); if (!name) { ret = -ENOMEM; goto fail_record_led_alloc; } snprintf(name, name_sz, "%s" K90_RECORD_LED_SUFFIX, dev_name(&dev->dev)); k90->record_led.removed = false; k90->record_led.cdev.name = name; k90->record_led.cdev.max_brightness = 1; k90->record_led.cdev.brightness_set = k90_brightness_set; k90->record_led.cdev.brightness_get = k90_record_led_get; INIT_WORK(&k90->record_led.work, k90_record_led_work); k90->record_led.brightness = 0; ret = led_classdev_register(&dev->dev, &k90->record_led.cdev); if (ret != 0) goto fail_record_led; /* Init attributes */ ret = sysfs_create_group(&dev->dev.kobj, &k90_attr_group); if (ret != 0) goto fail_sysfs; return 0; fail_sysfs: k90->record_led.removed = true; led_classdev_unregister(&k90->record_led.cdev); cancel_work_sync(&k90->record_led.work); fail_record_led: kfree(k90->record_led.cdev.name); fail_record_led_alloc: kfree(k90); fail_drvdata: drvdata->k90 = NULL; return ret; }

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Clément Vuchener31299.36%150.00%
Jiri Kosina20.64%150.00%
Total314100.00%2100.00%


static void k90_cleanup_backlight(struct hid_device *dev) { struct corsair_drvdata *drvdata = hid_get_drvdata(dev); if (drvdata->backlight) { drvdata->backlight->removed = true; led_classdev_unregister(&drvdata->backlight->cdev); cancel_work_sync(&drvdata->backlight->work); kfree(drvdata->backlight->cdev.name); kfree(drvdata->backlight); } }

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Clément Vuchener7498.67%150.00%
Jiri Kosina11.33%150.00%
Total75100.00%2100.00%


static void k90_cleanup_macro_functions(struct hid_device *dev) { struct corsair_drvdata *drvdata = hid_get_drvdata(dev); struct k90_drvdata *k90 = drvdata->k90; if (k90) { sysfs_remove_group(&dev->dev.kobj, &k90_attr_group); k90->record_led.removed = true; led_classdev_unregister(&k90->record_led.cdev); cancel_work_sync(&k90->record_led.work); kfree(k90->record_led.cdev.name); kfree(k90); } }

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Clément Vuchener9298.92%150.00%
Jiri Kosina11.08%150.00%
Total93100.00%2100.00%


static int corsair_probe(struct hid_device *dev, const struct hid_device_id *id) { int ret; unsigned long quirks = id->driver_data; struct corsair_drvdata *drvdata; struct usb_interface *usbif = to_usb_interface(dev->dev.parent); drvdata = devm_kzalloc(&dev->dev, sizeof(struct corsair_drvdata), GFP_KERNEL); if (drvdata == NULL) return -ENOMEM; drvdata->quirks = quirks; hid_set_drvdata(dev, drvdata); ret = hid_parse(dev); if (ret != 0) { hid_err(dev, "parse failed\n"); return ret; } ret = hid_hw_start(dev, HID_CONNECT_DEFAULT); if (ret != 0) { hid_err(dev, "hw start failed\n"); return ret; } if (usbif->cur_altsetting->desc.bInterfaceNumber == 0) { if (quirks & CORSAIR_USE_K90_MACRO) { ret = k90_init_macro_functions(dev); if (ret != 0) hid_warn(dev, "Failed to initialize K90 macro functions.\n"); } if (quirks & CORSAIR_USE_K90_BACKLIGHT) { ret = k90_init_backlight(dev); if (ret != 0) hid_warn(dev, "Failed to initialize K90 backlight.\n"); } } return 0; }

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Clément Vuchener213100.00%1100.00%
Total213100.00%1100.00%


static void corsair_remove(struct hid_device *dev) { k90_cleanup_macro_functions(dev); k90_cleanup_backlight(dev); hid_hw_stop(dev); }

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Clément Vuchener26100.00%1100.00%
Total26100.00%1100.00%


static int corsair_event(struct hid_device *dev, struct hid_field *field, struct hid_usage *usage, __s32 value) { struct corsair_drvdata *drvdata = hid_get_drvdata(dev); if (!drvdata->k90) return 0; switch (usage->hid & HID_USAGE) { case CORSAIR_USAGE_MACRO_RECORD_START: drvdata->k90->record_led.brightness = 1; break; case CORSAIR_USAGE_MACRO_RECORD_STOP: drvdata->k90->record_led.brightness = 0; break; default: break; } return 0; }

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Clément Vuchener87100.00%1100.00%
Total87100.00%1100.00%


static int corsair_input_mapping(struct hid_device *dev, struct hid_input *input, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { int gkey; if ((usage->hid & HID_USAGE_PAGE) != HID_UP_KEYBOARD) return 0; gkey = corsair_usage_to_gkey(usage->hid & HID_USAGE); if (gkey != 0) { hid_map_usage_clear(input, usage, bit, max, EV_KEY, corsair_gkey_map[gkey - 1]); return 1; } if ((usage->hid & HID_USAGE) >= CORSAIR_USAGE_SPECIAL_MIN && (usage->hid & HID_USAGE) <= CORSAIR_USAGE_SPECIAL_MAX) { switch (usage->hid & HID_USAGE) { case CORSAIR_USAGE_MACRO_RECORD_START: hid_map_usage_clear(input, usage, bit, max, EV_KEY, corsair_record_keycodes[0]); return 1; case CORSAIR_USAGE_MACRO_RECORD_STOP: hid_map_usage_clear(input, usage, bit, max, EV_KEY, corsair_record_keycodes[1]); return 1; case CORSAIR_USAGE_M1: hid_map_usage_clear(input, usage, bit, max, EV_KEY, corsair_profile_keycodes[0]); return 1; case CORSAIR_USAGE_M2: hid_map_usage_clear(input, usage, bit, max, EV_KEY, corsair_profile_keycodes[1]); return 1; case CORSAIR_USAGE_M3: hid_map_usage_clear(input, usage, bit, max, EV_KEY, corsair_profile_keycodes[2]); return 1; default: return -1; } } return 0; }

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Clément Vuchener258100.00%2100.00%
Total258100.00%2100.00%

/* * The report descriptor of Corsair Scimitar RGB Pro gaming mouse is * non parseable as they define two consecutive Logical Minimum for * the Usage Page (Consumer) in rdescs bytes 75 and 77 being 77 0x16 * that should be obviousy 0x26 for Logical Magimum of 16 bits. This * prevents poper parsing of the report descriptor due Logical * Minimum being larger than Logical Maximum. * * This driver fixes the report descriptor for: * - USB ID b1c:1b3e, sold as Scimitar RGB Pro Gaming mouse */
static __u8 *corsair_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { /* * Corsair Scimitar RGB Pro report descriptor is broken and * defines two different Logical Minimum for the Consumer * Application. The byte 77 should be a 0x26 defining a 16 * bits integer for the Logical Maximum but it is a 0x16 * instead (Logical Minimum) */ switch (hdev->product) { case USB_DEVICE_ID_CORSAIR_SCIMITAR_PRO_RGB: if (*rsize >= 172 && rdesc[75] == 0x15 && rdesc[77] == 0x16 && rdesc[78] == 0xff && rdesc[79] == 0x0f) { hid_info(hdev, "Fixing up report descriptor\n"); rdesc[77] = 0x26; } break; } } return rdesc; }

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PersonTokensPropCommitsCommitProp
Oscar Campos116100.00%1100.00%
Total116100.00%1100.00%

static const struct hid_device_id corsair_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_DEVICE_ID_CORSAIR_K90), .driver_data = CORSAIR_USE_K90_MACRO | CORSAIR_USE_K90_BACKLIGHT }, { HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_DEVICE_ID_CORSAIR_SCIMITAR_PRO_RGB) }, {} }; MODULE_DEVICE_TABLE(hid, corsair_devices); static struct hid_driver corsair_driver = { .name = "corsair", .id_table = corsair_devices, .probe = corsair_probe, .event = corsair_event, .remove = corsair_remove, .input_mapping = corsair_input_mapping, .report_fixup = corsair_mouse_report_fixup, }; module_hid_driver(corsair_driver); MODULE_LICENSE("GPL"); /* Original K90 driver author */ MODULE_AUTHOR("Clement Vuchener"); /* Scimitar PRO RGB driver author */ MODULE_AUTHOR("Oscar Campos"); MODULE_DESCRIPTION("HID driver for Corsair devices");

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PersonTokensPropCommitsCommitProp
Clément Vuchener291191.25%228.57%
Oscar Campos1394.36%114.29%
Johan Hovold1324.14%228.57%
Jiri Kosina60.19%114.29%
Axel Lin20.06%114.29%
Total3190100.00%7100.00%
Directory: drivers/hid
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