// SPDX-License-Identifier: GPL-2.0+
/*
* HID driver for gaming keys on Logitech gaming keyboards (such as the G15)
*
* Copyright (c) 2019 Hans de Goede <[email protected]>
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/random.h>
#include <linux/sched.h>
#include <linux/usb.h>
#include <linux/wait.h>
#include "hid-ids.h"
#define LG_G15_TRANSFER_BUF_SIZE 20
#define LG_G15_FEATURE_REPORT 0x02
#define LG_G510_FEATURE_M_KEYS_LEDS 0x04
#define LG_G510_FEATURE_BACKLIGHT_RGB 0x05
#define LG_G510_FEATURE_POWER_ON_RGB 0x06
enum lg_g15_model {
LG_G15,
LG_G15_V2,
LG_G510,
LG_G510_USB_AUDIO,
LG_Z10,
};
enum lg_g15_led_type {
LG_G15_KBD_BRIGHTNESS,
LG_G15_LCD_BRIGHTNESS,
LG_G15_BRIGHTNESS_MAX,
LG_G15_MACRO_PRESET1 = 2,
LG_G15_MACRO_PRESET2,
LG_G15_MACRO_PRESET3,
LG_G15_MACRO_RECORD,
LG_G15_LED_MAX
};
struct lg_g15_led {
struct led_classdev cdev;
enum led_brightness brightness;
enum lg_g15_led_type led;
u8 red, green, blue;
};
struct lg_g15_data {
/* Must be first for proper dma alignment */
u8 transfer_buf[LG_G15_TRANSFER_BUF_SIZE];
/* Protects the transfer_buf and led brightness */
struct mutex mutex;
struct work_struct work;
struct input_dev *input;
struct hid_device *hdev;
enum lg_g15_model model;
struct lg_g15_led leds[LG_G15_LED_MAX];
bool game_mode_enabled;
};
/******** G15 and G15 v2 LED functions ********/
static int lg_g15_update_led_brightness(struct lg_g15_data *g15)
{
int ret;
ret = hid_hw_raw_request(g15->hdev, LG_G15_FEATURE_REPORT,
g15->transfer_buf, 4,
HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
if (ret != 4) {
hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret);
return (ret < 0) ? ret : -EIO;
}
g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = g15->transfer_buf[1];
g15->leds[LG_G15_LCD_BRIGHTNESS].brightness = g15->transfer_buf[2];
g15->leds[LG_G15_MACRO_PRESET1].brightness =
!(g15->transfer_buf[3] & 0x01);
g15->leds[LG_G15_MACRO_PRESET2].brightness =
!(g15->transfer_buf[3] & 0x02);
g15->leds[LG_G15_MACRO_PRESET3].brightness =
!(g15->transfer_buf[3] & 0x04);
g15->leds[LG_G15_MACRO_RECORD].brightness =
!(g15->transfer_buf[3] & 0x08);
return 0;
}
static enum led_brightness lg_g15_led_get(struct led_classdev *led_cdev)
{
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
enum led_brightness brightness;
mutex_lock(&g15->mutex);
lg_g15_update_led_brightness(g15);
brightness = g15->leds[g15_led->led].brightness;
mutex_unlock(&g15->mutex);
return brightness;
}
static int lg_g15_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
u8 val, mask = 0;
int i, ret;
/* Ignore LED off on unregister / keyboard unplug */
if (led_cdev->flags & LED_UNREGISTERING)
return 0;
mutex_lock(&g15->mutex);
g15->transfer_buf[0] = LG_G15_FEATURE_REPORT;
g15->transfer_buf[3] = 0;
if (g15_led->led < LG_G15_BRIGHTNESS_MAX) {
g15->transfer_buf[1] = g15_led->led + 1;
g15->transfer_buf[2] = brightness << (g15_led->led * 4);
} else {
for (i = LG_G15_MACRO_PRESET1; i < LG_G15_LED_MAX; i++) {
if (i == g15_led->led)
val = brightness;
else
val = g15->leds[i].brightness;
if (val)
mask |= 1 << (i - LG_G15_MACRO_PRESET1);
}
g15->transfer_buf[1] = 0x04;
g15->transfer_buf[2] = ~mask;
}
ret = hid_hw_raw_request(g15->hdev, LG_G15_FEATURE_REPORT,
g15->transfer_buf, 4,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
if (ret == 4) {
/* Success */
g15_led->brightness = brightness;
ret = 0;
} else {
hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret);
ret = (ret < 0) ? ret : -EIO;
}
mutex_unlock(&g15->mutex);
return ret;
}
static void lg_g15_leds_changed_work(struct work_struct *work)
{
struct lg_g15_data *g15 = container_of(work, struct lg_g15_data, work);
enum led_brightness old_brightness[LG_G15_BRIGHTNESS_MAX];
enum led_brightness brightness[LG_G15_BRIGHTNESS_MAX];
int i, ret;
mutex_lock(&g15->mutex);
for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++)
old_brightness[i] = g15->leds[i].brightness;
ret = lg_g15_update_led_brightness(g15);
for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++)
brightness[i] = g15->leds[i].brightness;
mutex_unlock(&g15->mutex);
if (ret)
return;
for (i = 0; i < LG_G15_BRIGHTNESS_MAX; i++) {
if (brightness[i] == old_brightness[i])
continue;
led_classdev_notify_brightness_hw_changed(&g15->leds[i].cdev,
brightness[i]);
}
}
/******** G510 LED functions ********/
static int lg_g510_get_initial_led_brightness(struct lg_g15_data *g15, int i)
{
int ret, high;
ret = hid_hw_raw_request(g15->hdev, LG_G510_FEATURE_BACKLIGHT_RGB + i,
g15->transfer_buf, 4,
HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
if (ret != 4) {
hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret);
return (ret < 0) ? ret : -EIO;
}
high = max3(g15->transfer_buf[1], g15->transfer_buf[2],
g15->transfer_buf[3]);
if (high) {
g15->leds[i].red =
DIV_ROUND_CLOSEST(g15->transfer_buf[1] * 255, high);
g15->leds[i].green =
DIV_ROUND_CLOSEST(g15->transfer_buf[2] * 255, high);
g15->leds[i].blue =
DIV_ROUND_CLOSEST(g15->transfer_buf[3] * 255, high);
g15->leds[i].brightness = high;
} else {
g15->leds[i].red = 255;
g15->leds[i].green = 255;
g15->leds[i].blue = 255;
g15->leds[i].brightness = 0;
}
return 0;
}
/* Must be called with g15->mutex locked */
static int lg_g510_kbd_led_write(struct lg_g15_data *g15,
struct lg_g15_led *g15_led,
enum led_brightness brightness)
{
int ret;
g15->transfer_buf[0] = 5 + g15_led->led;
g15->transfer_buf[1] =
DIV_ROUND_CLOSEST(g15_led->red * brightness, 255);
g15->transfer_buf[2] =
DIV_ROUND_CLOSEST(g15_led->green * brightness, 255);
g15->transfer_buf[3] =
DIV_ROUND_CLOSEST(g15_led->blue * brightness, 255);
ret = hid_hw_raw_request(g15->hdev,
LG_G510_FEATURE_BACKLIGHT_RGB + g15_led->led,
g15->transfer_buf, 4,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
if (ret == 4) {
/* Success */
g15_led->brightness = brightness;
ret = 0;
} else {
hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret);
ret = (ret < 0) ? ret : -EIO;
}
return ret;
}
static int lg_g510_kbd_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
int ret;
/* Ignore LED off on unregister / keyboard unplug */
if (led_cdev->flags & LED_UNREGISTERING)
return 0;
mutex_lock(&g15->mutex);
ret = lg_g510_kbd_led_write(g15, g15_led, brightness);
mutex_unlock(&g15->mutex);
return ret;
}
static enum led_brightness lg_g510_kbd_led_get(struct led_classdev *led_cdev)
{
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
return g15_led->brightness;
}
static ssize_t color_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
unsigned long value;
int ret;
if (count < 7 || (count == 8 && buf[7] != '\n') || count > 8)
return -EINVAL;
if (buf[0] != '#')
return -EINVAL;
ret = kstrtoul(buf + 1, 16, &value);
if (ret)
return ret;
mutex_lock(&g15->mutex);
g15_led->red = (value & 0xff0000) >> 16;
g15_led->green = (value & 0x00ff00) >> 8;
g15_led->blue = (value & 0x0000ff);
ret = lg_g510_kbd_led_write(g15, g15_led, g15_led->brightness);
mutex_unlock(&g15->mutex);
return (ret < 0) ? ret : count;
}
static ssize_t color_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct led_classdev *led_cdev = dev_get_drvdata(dev);
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
ssize_t ret;
mutex_lock(&g15->mutex);
ret = sprintf(buf, "#%02x%02x%02x\n",
g15_led->red, g15_led->green, g15_led->blue);
mutex_unlock(&g15->mutex);
return ret;
}
static DEVICE_ATTR_RW(color);
static struct attribute *lg_g510_kbd_led_attrs[] = {
&dev_attr_color.attr,
NULL,
};
static const struct attribute_group lg_g510_kbd_led_group = {
.attrs = lg_g510_kbd_led_attrs,
};
static const struct attribute_group *lg_g510_kbd_led_groups[] = {
&lg_g510_kbd_led_group,
NULL,
};
static void lg_g510_leds_sync_work(struct work_struct *work)
{
struct lg_g15_data *g15 = container_of(work, struct lg_g15_data, work);
mutex_lock(&g15->mutex);
lg_g510_kbd_led_write(g15, &g15->leds[LG_G15_KBD_BRIGHTNESS],
g15->leds[LG_G15_KBD_BRIGHTNESS].brightness);
mutex_unlock(&g15->mutex);
}
static int lg_g510_update_mkey_led_brightness(struct lg_g15_data *g15)
{
int ret;
ret = hid_hw_raw_request(g15->hdev, LG_G510_FEATURE_M_KEYS_LEDS,
g15->transfer_buf, 2,
HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
if (ret != 2) {
hid_err(g15->hdev, "Error getting LED brightness: %d\n", ret);
ret = (ret < 0) ? ret : -EIO;
}
g15->leds[LG_G15_MACRO_PRESET1].brightness =
!!(g15->transfer_buf[1] & 0x80);
g15->leds[LG_G15_MACRO_PRESET2].brightness =
!!(g15->transfer_buf[1] & 0x40);
g15->leds[LG_G15_MACRO_PRESET3].brightness =
!!(g15->transfer_buf[1] & 0x20);
g15->leds[LG_G15_MACRO_RECORD].brightness =
!!(g15->transfer_buf[1] & 0x10);
return 0;
}
static enum led_brightness lg_g510_mkey_led_get(struct led_classdev *led_cdev)
{
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
enum led_brightness brightness;
mutex_lock(&g15->mutex);
lg_g510_update_mkey_led_brightness(g15);
brightness = g15->leds[g15_led->led].brightness;
mutex_unlock(&g15->mutex);
return brightness;
}
static int lg_g510_mkey_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct lg_g15_led *g15_led =
container_of(led_cdev, struct lg_g15_led, cdev);
struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent);
u8 val, mask = 0;
int i, ret;
/* Ignore LED off on unregister / keyboard unplug */
if (led_cdev->flags & LED_UNREGISTERING)
return 0;
mutex_lock(&g15->mutex);
for (i = LG_G15_MACRO_PRESET1; i < LG_G15_LED_MAX; i++) {
if (i == g15_led->led)
val = brightness;
else
val = g15->leds[i].brightness;
if (val)
mask |= 0x80 >> (i - LG_G15_MACRO_PRESET1);
}
g15->transfer_buf[0] = LG_G510_FEATURE_M_KEYS_LEDS;
g15->transfer_buf[1] = mask;
ret = hid_hw_raw_request(g15->hdev, LG_G510_FEATURE_M_KEYS_LEDS,
g15->transfer_buf, 2,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
if (ret == 2) {
/* Success */
g15_led->brightness = brightness;
ret = 0;
} else {
hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret);
ret = (ret < 0) ? ret : -EIO;
}
mutex_unlock(&g15->mutex);
return ret;
}
/******** Generic LED functions ********/
static int lg_g15_get_initial_led_brightness(struct lg_g15_data *g15)
{
int ret;
switch (g15->model) {
case LG_G15:
case LG_G15_V2:
return lg_g15_update_led_brightness(g15);
case LG_G510:
case LG_G510_USB_AUDIO:
ret = lg_g510_get_initial_led_brightness(g15, 0);
if (ret)
return ret;
ret = lg_g510_get_initial_led_brightness(g15, 1);
if (ret)
return ret;
return lg_g510_update_mkey_led_brightness(g15);
case LG_Z10:
/*
* Getting the LCD backlight brightness is not supported.
* Reading Feature(2) fails with -EPIPE and this crashes
* the LCD and touch keys part of the speakers.
*/
return 0;
}
return -EINVAL; /* Never reached */
}
/******** Input functions ********/
/* On the G15 Mark I Logitech has been quite creative with which bit is what */
static void lg_g15_handle_lcd_menu_keys(struct lg_g15_data *g15, u8 *data)
{
int i, val;
/* Most left (round/display) button below the LCD */
input_report_key(g15->input, KEY_KBD_LCD_MENU1, data[8] & 0x80);
/* 4 other buttons below the LCD */
for (i = 0; i < 4; i++) {
val = data[i + 2] & 0x80;
input_report_key(g15->input, KEY_KBD_LCD_MENU2 + i, val);
}
}
static int lg_g15_event(struct lg_g15_data *g15, u8 *data)
{
int i, val;
/* G1 - G6 */
for (i = 0; i < 6; i++) {
val = data[i + 1] & (1 << i);
input_report_key(g15->input, KEY_MACRO1 + i, val);
}
/* G7 - G12 */
for (i = 0; i < 6; i++) {
val = data[i + 2] & (1 << i);
input_report_key(g15->input, KEY_MACRO7 + i, val);
}
/* G13 - G17 */
for (i = 0; i < 5; i++) {
val = data[i + 1] & (4 << i);
input_report_key(g15->input, KEY_MACRO13 + i, val);
}
/* G18 */
input_report_key(g15->input, KEY_MACRO18, data[8] & 0x40);
/* M1 - M3 */
for (i = 0; i < 3; i++) {
val = data[i + 6] & (1 << i);
input_report_key(g15->input, KEY_MACRO_PRESET1 + i, val);
}
/* MR */
input_report_key(g15->input, KEY_MACRO_RECORD_START, data[7] & 0x40);
lg_g15_handle_lcd_menu_keys(g15, data);
/* Backlight cycle button pressed? */
if (data[1] & 0x80)
schedule_work(&g15->work);
input_sync(g15->input);
return 0;
}
static int lg_g15_v2_event(struct lg_g15_data *g15, u8 *data)
{
int i, val;
/* G1 - G6 */
for (i = 0; i < 6; i++) {
val = data[1] & (1 << i);
input_report_key(g15->input, KEY_MACRO1 + i, val);
}
/* M1 - M3 + MR */
input_report_key(g15->input, KEY_MACRO_PRESET1, data[1] & 0x40);
input_report_key(g15->input, KEY_MACRO_PRESET2, data[1] & 0x80);
input_report_key(g15->input, KEY_MACRO_PRESET3, data[2] & 0x20);
input_report_key(g15->input, KEY_MACRO_RECORD_START, data[2] & 0x40);
/* Round button to the left of the LCD */
input_report_key(g15->input, KEY_KBD_LCD_MENU1, data[2] & 0x80);
/* 4 buttons below the LCD */
for (i = 0; i < 4; i++) {
val = data[2] & (2 << i);
input_report_key(g15->input, KEY_KBD_LCD_MENU2 + i, val);
}
/* Backlight cycle button pressed? */
if (data[2] & 0x01)
schedule_work(&g15->work);
input_sync(g15->input);
return 0;
}
static int lg_g510_event(struct lg_g15_data *g15, u8 *data)
{
bool game_mode_enabled;
int i, val;
/* G1 - G18 */
for (i = 0; i < 18; i++) {
val = data[i / 8 + 1] & (1 << (i % 8));
input_report_key(g15->input, KEY_MACRO1 + i, val);
}
/* Game mode on/off slider */
game_mode_enabled = data[3] & 0x04;
if (game_mode_enabled != g15->game_mode_enabled) {
if (game_mode_enabled)
hid_info(g15->hdev, "Game Mode enabled, Windows (super) key is disabled\n");
else
hid_info(g15->hdev, "Game Mode disabled\n");
g15->game_mode_enabled = game_mode_enabled;
}
/* M1 - M3 */
for (i = 0; i < 3; i++) {
val = data[3] & (0x10 << i);
input_report_key(g15->input, KEY_MACRO_PRESET1 + i, val);
}
/* MR */
input_report_key(g15->input, KEY_MACRO_RECORD_START, data[3] & 0x80);
/* LCD menu keys */
for (i = 0; i < 5; i++) {
val = data[4] & (1 << i);
input_report_key(g15->input, KEY_KBD_LCD_MENU1 + i, val);
}
/* Headphone Mute */
input_report_key(g15->input, KEY_MUTE, data[4] & 0x20);
/* Microphone Mute */
input_report_key(g15->input, KEY_F20, data[4] & 0x40);
input_sync(g15->input);
return 0;
}
static int lg_g510_leds_event(struct lg_g15_data *g15, u8 *data)
{
bool backlight_disabled;
/*
* The G510 ignores backlight updates when the backlight is turned off
* through the light toggle button on the keyboard, to work around this
* we queue a workitem to sync values when the backlight is turned on.
*/
backlight_disabled = data[1] & 0x04;
if (!backlight_disabled)
schedule_work(&g15->work);
return 0;
}
static int lg_g15_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *data, int size)
{
struct lg_g15_data *g15 = hid_get_drvdata(hdev);
if (!g15)
return 0;
switch (g15->model) {
case LG_G15:
if (data[0] == 0x02 && size == 9)
return lg_g15_event(g15, data);
break;
case LG_G15_V2:
if (data[0] == 0x02 && size == 5)
return lg_g15_v2_event(g15, data);
break;
case LG_Z10:
if (data[0] == 0x02 && size == 9) {
lg_g15_handle_lcd_menu_keys(g15, data);
input_sync(g15->input);
}
break;
case LG_G510:
case LG_G510_USB_AUDIO:
if (data[0] == 0x03 && size == 5)
return lg_g510_event(g15, data);
if (data[0] == 0x04 && size == 2)
return lg_g510_leds_event(g15, data);
break;
}
return 0;
}
static int lg_g15_input_open(struct input_dev *dev)
{
struct hid_device *hdev = input_get_drvdata(dev);
return hid_hw_open(hdev);
}
static void lg_g15_input_close(struct input_dev *dev)
{
struct hid_device *hdev = input_get_drvdata(dev);
hid_hw_close(hdev);
}
static int lg_g15_register_led(struct lg_g15_data *g15, int i, const char *name)
{
g15->leds[i].led = i;
g15->leds[i].cdev.name = name;
switch (g15->model) {
case LG_G15:
case LG_G15_V2:
g15->leds[i].cdev.brightness_get = lg_g15_led_get;
fallthrough;
case LG_Z10:
g15->leds[i].cdev.brightness_set_blocking = lg_g15_led_set;
if (i < LG_G15_BRIGHTNESS_MAX) {
g15->leds[i].cdev.flags = LED_BRIGHT_HW_CHANGED;
g15->leds[i].cdev.max_brightness = 2;
} else {
g15->leds[i].cdev.max_brightness = 1;
}
break;
case LG_G510:
case LG_G510_USB_AUDIO:
switch (i) {
case LG_G15_LCD_BRIGHTNESS:
/*
* The G510 does not have a separate LCD brightness,
* but it does have a separate power-on (reset) value.
*/
g15->leds[i].cdev.name = "g15::power_on_backlight_val";
fallthrough;
case LG_G15_KBD_BRIGHTNESS:
g15->leds[i].cdev.brightness_set_blocking =
lg_g510_kbd_led_set;
g15->leds[i].cdev.brightness_get =
lg_g510_kbd_led_get;
g15->leds[i].cdev.max_brightness = 255;
g15->leds[i].cdev.groups = lg_g510_kbd_led_groups;
break;
default:
g15->leds[i].cdev.brightness_set_blocking =
lg_g510_mkey_led_set;
g15->leds[i].cdev.brightness_get =
lg_g510_mkey_led_get;
g15->leds[i].cdev.max_brightness = 1;
}
break;
}
return devm_led_classdev_register(&g15->hdev->dev, &g15->leds[i].cdev);
}
/* Common input device init code shared between keyboards and Z-10 speaker handling */
static void lg_g15_init_input_dev(struct hid_device *hdev, struct input_dev *input,
const char *name)
{
int i;
input->name = name;
input->phys = hdev->phys;
input->uniq = hdev->uniq;
input->id.bustype = hdev->bus;
input->id.vendor = hdev->vendor;
input->id.product = hdev->product;
input->id.version = hdev->version;
input->dev.parent = &hdev->dev;
input->open = lg_g15_input_open;
input->close = lg_g15_input_close;
/* Keys below the LCD, intended for controlling a menu on the LCD */
for (i = 0; i < 5; i++)
input_set_capability(input, EV_KEY, KEY_KBD_LCD_MENU1 + i);
}
static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
static const char * const led_names[] = {
"g15::kbd_backlight",
"g15::lcd_backlight",
"g15::macro_preset1",
"g15::macro_preset2",
"g15::macro_preset3",
"g15::macro_record",
};
u8 gkeys_settings_output_report = 0;
u8 gkeys_settings_feature_report = 0;
struct hid_report_enum *rep_enum;
unsigned int connect_mask = 0;
bool has_ff000000 = false;
struct lg_g15_data *g15;
struct input_dev *input;
struct hid_report *rep;
int ret, i, gkeys = 0;
hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
ret = hid_parse(hdev);
if (ret)
return ret;
/*
* Some models have multiple interfaces, we want the interface with
* the f000.0000 application input report.
*/
rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
list_for_each_entry(rep, &rep_enum->report_list, list) {
if (rep->application == 0xff000000)
has_ff000000 = true;
}
if (!has_ff000000)
return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
g15 = devm_kzalloc(&hdev->dev, sizeof(*g15), GFP_KERNEL);
if (!g15)
return -ENOMEM;
mutex_init(&g15->mutex);
input = devm_input_allocate_device(&hdev->dev);
if (!input)
return -ENOMEM;
g15->hdev = hdev;
g15->model = id->driver_data;
g15->input = input;
input_set_drvdata(input, hdev);
hid_set_drvdata(hdev, (void *)g15);
switch (g15->model) {
case LG_G15:
INIT_WORK(&g15->work, lg_g15_leds_changed_work);
/*
* The G15 and G15 v2 use a separate usb-device (on a builtin
* hub) which emulates a keyboard for the F1 - F12 emulation
* on the G-keys, which we disable, rendering the emulated kbd
* non-functional, so we do not let hid-input connect.
*/
connect_mask = HID_CONNECT_HIDRAW;
gkeys_settings_output_report = 0x02;
gkeys = 18;
break;
case LG_G15_V2:
INIT_WORK(&g15->work, lg_g15_leds_changed_work);
connect_mask = HID_CONNECT_HIDRAW;
gkeys_settings_output_report = 0x02;
gkeys = 6;
break;
case LG_G510:
case LG_G510_USB_AUDIO:
INIT_WORK(&g15->work, lg_g510_leds_sync_work);
connect_mask = HID_CONNECT_HIDINPUT | HID_CONNECT_HIDRAW;
gkeys_settings_feature_report = 0x01;
gkeys = 18;
break;
case LG_Z10:
connect_mask = HID_CONNECT_HIDRAW;
break;
}
ret = hid_hw_start(hdev, connect_mask);
if (ret)
return ret;
/* Tell the keyboard to stop sending F1-F12 + 1-6 for G1 - G18 */
if (gkeys_settings_output_report) {
g15->transfer_buf[0] = gkeys_settings_output_report;
memset(g15->transfer_buf + 1, 0, gkeys);
/*
* The kbd ignores our output report if we do not queue
* an URB on the USB input endpoint first...
*/
ret = hid_hw_open(hdev);
if (ret)
goto error_hw_stop;
ret = hid_hw_output_report(hdev, g15->transfer_buf, gkeys + 1);
hid_hw_close(hdev);
}
if (gkeys_settings_feature_report) {
g15->transfer_buf[0] = gkeys_settings_feature_report;
memset(g15->transfer_buf + 1, 0, gkeys);
ret = hid_hw_raw_request(g15->hdev,
gkeys_settings_feature_report,
g15->transfer_buf, gkeys + 1,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
}
if (ret < 0) {
hid_err(hdev, "Error %d disabling keyboard emulation for the G-keys, falling back to generic hid-input driver\n",
ret);
hid_set_drvdata(hdev, NULL);
return 0;
}
/* Get initial brightness levels */
ret = lg_g15_get_initial_led_brightness(g15);
if (ret)
goto error_hw_stop;
if (g15->model == LG_Z10) {
lg_g15_init_input_dev(hdev, g15->input, "Logitech Z-10 LCD Menu Keys");
ret = input_register_device(g15->input);
if (ret)
goto error_hw_stop;
ret = lg_g15_register_led(g15, 1, "z-10::lcd_backlight");
if (ret)
goto error_hw_stop;
return 0; /* All done */
}
/* Setup and register input device */
lg_g15_init_input_dev(hdev, input, "Logitech Gaming Keyboard Gaming Keys");
/* G-keys */
for (i = 0; i < gkeys; i++)
input_set_capability(input, EV_KEY, KEY_MACRO1 + i);
/* M1 - M3 and MR keys */
for (i = 0; i < 3; i++)
input_set_capability(input, EV_KEY, KEY_MACRO_PRESET1 + i);
input_set_capability(input, EV_KEY, KEY_MACRO_RECORD_START);
/*
* On the G510 only report headphone and mic mute keys when *not* using
* the builtin USB audio device. When the builtin audio is used these
* keys directly toggle mute (and the LEDs) on/off.
*/
if (g15->model == LG_G510) {
input_set_capability(input, EV_KEY, KEY_MUTE);
/* Userspace expects F20 for micmute */
input_set_capability(input, EV_KEY, KEY_F20);
}
ret = input_register_device(input);
if (ret)
goto error_hw_stop;
/* Register LED devices */
for (i = 0; i < LG_G15_LED_MAX; i++) {
ret = lg_g15_register_led(g15, i, led_names[i]);
if (ret)
goto error_hw_stop;
}
return 0;
error_hw_stop:
hid_hw_stop(hdev);
return ret;
}
static const struct hid_device_id lg_g15_devices[] = {
/* The G11 is a G15 without the LCD, treat it as a G15 */
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_G11),
.driver_data = LG_G15 },
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_G15_LCD),
.driver_data = LG_G15 },
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_G15_V2_LCD),
.driver_data = LG_G15_V2 },
/* G510 without a headset plugged in */
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_G510),
.driver_data = LG_G510 },
/* G510 with headset plugged in / with extra USB audio interface */
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_G510_USB_AUDIO),
.driver_data = LG_G510_USB_AUDIO },
/* Z-10 speakers */
{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
USB_DEVICE_ID_LOGITECH_Z_10_SPK),
.driver_data = LG_Z10 },
{ }
};
MODULE_DEVICE_TABLE(hid, lg_g15_devices);
static struct hid_driver lg_g15_driver = {
.name = "lg-g15",
.id_table = lg_g15_devices,
.raw_event = lg_g15_raw_event,
.probe = lg_g15_probe,
};
module_hid_driver(lg_g15_driver);
MODULE_AUTHOR("Hans de Goede <[email protected]>");
MODULE_DESCRIPTION("HID driver for gaming keys on Logitech gaming keyboards");
MODULE_LICENSE("GPL");
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