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HID: Add driver for Logitech gaming keyboards (G15, G15 v2)
Add a driver to stop the extra "G" keys from sending F1 - F12 instead making them send KEY_GKEY# and also make the non-functional M1 - M3 and MR keys and the non-functional buttons below the LCD panel properly generated key events. Note the connect_mask and gkeys_settings_output_report variables may seem unnecessary since they are always set to the same value, these are there in preparation of adding support for the G, M and LCD keys on the G510 kbd. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Hans de Goede
Jiri Kosina
parent
b5625db9d2
commit
3a0275384c
@ -9587,6 +9587,13 @@ S: Maintained
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F: Documentation/admin-guide/ldm.rst
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F: block/partitions/ldm.*
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LOGITECH HID GAMING KEYBOARDS
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M: Hans de Goede <hdegoede@redhat.com>
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L: linux-input@vger.kernel.org
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
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S: Maintained
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F: drivers/hid/hid-lg-g15.c
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LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)
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M: Sathya Prakash <sathya.prakash@broadcom.com>
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M: Chaitra P B <chaitra.basappa@broadcom.com>
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@ -64,6 +64,7 @@ obj-$(CONFIG_HID_KYE) += hid-kye.o
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obj-$(CONFIG_HID_LCPOWER) += hid-lcpower.o
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obj-$(CONFIG_HID_LENOVO) += hid-lenovo.o
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obj-$(CONFIG_HID_LOGITECH) += hid-logitech.o
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obj-$(CONFIG_HID_LOGITECH) += hid-lg-g15.o
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obj-$(CONFIG_HID_LOGITECH_DJ) += hid-logitech-dj.o
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obj-$(CONFIG_HID_LOGITECH_HIDPP) += hid-logitech-hidpp.o
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obj-$(CONFIG_HID_MACALLY) += hid-macally.o
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@ -747,6 +747,8 @@
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#define USB_DEVICE_ID_LOGITECH_DUAL_ACTION 0xc216
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#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2 0xc218
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#define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2 0xc219
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#define USB_DEVICE_ID_LOGITECH_G15_LCD 0xc222
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#define USB_DEVICE_ID_LOGITECH_G15_V2_LCD 0xc227
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#define USB_DEVICE_ID_LOGITECH_G29_WHEEL 0xc24f
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#define USB_DEVICE_ID_LOGITECH_G920_WHEEL 0xc262
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#define USB_DEVICE_ID_LOGITECH_WINGMAN_F3D 0xc283
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256
drivers/hid/hid-lg-g15.c
Normal file
256
drivers/hid/hid-lg-g15.c
Normal file
@ -0,0 +1,256 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* HID driver for gaming keys on Logitech gaming keyboards (such as the G15)
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*
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* Copyright (c) 2019 Hans de Goede <hdegoede@redhat.com>
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*/
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/random.h>
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#include <linux/sched.h>
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#include <linux/usb.h>
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#include <linux/wait.h>
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#include "hid-ids.h"
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#define LG_G15_TRANSFER_BUF_SIZE 20
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enum lg_g15_model {
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LG_G15,
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LG_G15_V2,
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};
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struct lg_g15_data {
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/* Must be first for proper dma alignment */
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u8 transfer_buf[LG_G15_TRANSFER_BUF_SIZE];
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struct input_dev *input;
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struct hid_device *hdev;
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enum lg_g15_model model;
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};
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/* On the G15 Mark I Logitech has been quite creative with which bit is what */
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static int lg_g15_event(struct lg_g15_data *g15, u8 *data, int size)
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{
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int i, val;
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/* G1 - G6 */
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for (i = 0; i < 6; i++) {
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val = data[i + 1] & (1 << i);
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input_report_key(g15->input, KEY_MACRO1 + i, val);
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}
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/* G7 - G12 */
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for (i = 0; i < 6; i++) {
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val = data[i + 2] & (1 << i);
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input_report_key(g15->input, KEY_MACRO7 + i, val);
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}
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/* G13 - G17 */
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for (i = 0; i < 5; i++) {
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val = data[i + 1] & (4 << i);
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input_report_key(g15->input, KEY_MACRO13 + i, val);
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}
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/* G18 */
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input_report_key(g15->input, KEY_MACRO18, data[8] & 0x40);
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/* M1 - M3 */
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for (i = 0; i < 3; i++) {
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val = data[i + 6] & (1 << i);
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input_report_key(g15->input, KEY_MACRO_PRESET1 + i, val);
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}
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/* MR */
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input_report_key(g15->input, KEY_MACRO_RECORD_START, data[7] & 0x40);
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/* Most left (round) button below the LCD */
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input_report_key(g15->input, KEY_KBD_LCD_MENU1, data[8] & 0x80);
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/* 4 other buttons below the LCD */
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for (i = 0; i < 4; i++) {
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val = data[i + 2] & 0x80;
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input_report_key(g15->input, KEY_KBD_LCD_MENU2 + i, val);
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}
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input_sync(g15->input);
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return 0;
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}
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static int lg_g15_v2_event(struct lg_g15_data *g15, u8 *data, int size)
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{
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int i, val;
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/* G1 - G6 */
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for (i = 0; i < 6; i++) {
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val = data[1] & (1 << i);
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input_report_key(g15->input, KEY_MACRO1 + i, val);
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}
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/* M1 - M3 + MR */
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input_report_key(g15->input, KEY_MACRO_PRESET1, data[1] & 0x40);
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input_report_key(g15->input, KEY_MACRO_PRESET2, data[1] & 0x80);
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input_report_key(g15->input, KEY_MACRO_PRESET3, data[2] & 0x20);
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input_report_key(g15->input, KEY_MACRO_RECORD_START, data[2] & 0x40);
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/* Round button to the left of the LCD */
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input_report_key(g15->input, KEY_KBD_LCD_MENU1, data[2] & 0x80);
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/* 4 buttons below the LCD */
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for (i = 0; i < 4; i++) {
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val = data[2] & (2 << i);
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input_report_key(g15->input, KEY_KBD_LCD_MENU2 + i, val);
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}
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input_sync(g15->input);
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return 0;
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}
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static int lg_g15_raw_event(struct hid_device *hdev, struct hid_report *report,
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u8 *data, int size)
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{
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struct lg_g15_data *g15 = hid_get_drvdata(hdev);
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if (g15->model == LG_G15 && data[0] == 0x02 && size == 9)
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return lg_g15_event(g15, data, size);
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if (g15->model == LG_G15_V2 && data[0] == 0x02 && size == 5)
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return lg_g15_v2_event(g15, data, size);
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return 0;
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}
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static int lg_g15_input_open(struct input_dev *dev)
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{
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struct hid_device *hdev = input_get_drvdata(dev);
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return hid_hw_open(hdev);
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}
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static void lg_g15_input_close(struct input_dev *dev)
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{
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struct hid_device *hdev = input_get_drvdata(dev);
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hid_hw_close(hdev);
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}
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static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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u8 gkeys_settings_output_report = 0;
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unsigned int connect_mask = 0;
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struct lg_g15_data *g15;
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struct input_dev *input;
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int ret, i, gkeys = 0;
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ret = hid_parse(hdev);
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if (ret)
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return ret;
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g15 = devm_kzalloc(&hdev->dev, sizeof(*g15), GFP_KERNEL);
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if (!g15)
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return -ENOMEM;
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input = devm_input_allocate_device(&hdev->dev);
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if (!input)
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return -ENOMEM;
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g15->hdev = hdev;
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g15->model = id->driver_data;
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hid_set_drvdata(hdev, (void *)g15);
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switch (g15->model) {
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case LG_G15:
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/*
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* The G15 and G15 v2 use a separate usb-device (on a builtin
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* hub) which emulates a keyboard for the F1 - F12 emulation
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* on the G-keys, which we disable, rendering the emulated kbd
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* non-functional, so we do not let hid-input connect.
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*/
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connect_mask = HID_CONNECT_HIDRAW;
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gkeys_settings_output_report = 0x02;
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gkeys = 18;
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break;
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case LG_G15_V2:
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connect_mask = HID_CONNECT_HIDRAW;
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gkeys_settings_output_report = 0x02;
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gkeys = 6;
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break;
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}
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ret = hid_hw_start(hdev, connect_mask);
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if (ret)
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return ret;
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/* Tell the keyboard to stop sending F1-F12 + 1-6 for G1 - G18 */
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if (gkeys_settings_output_report) {
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g15->transfer_buf[0] = gkeys_settings_output_report;
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memset(g15->transfer_buf + 1, 0, gkeys);
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/*
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* The kbd ignores our output report if we do not queue
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* an URB on the USB input endpoint first...
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*/
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ret = hid_hw_open(hdev);
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if (ret)
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goto error_hw_stop;
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ret = hid_hw_output_report(hdev, g15->transfer_buf, gkeys + 1);
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hid_hw_close(hdev);
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}
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if (ret < 0) {
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hid_err(hdev, "Error disabling keyboard emulation for the G-keys\n");
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goto error_hw_stop;
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}
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input->name = "Logitech Gaming Keyboard Gaming Keys";
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input->phys = hdev->phys;
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input->uniq = hdev->uniq;
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input->id.bustype = hdev->bus;
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input->id.vendor = hdev->vendor;
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input->id.product = hdev->product;
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input->id.version = hdev->version;
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input->dev.parent = &hdev->dev;
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input->open = lg_g15_input_open;
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input->close = lg_g15_input_close;
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/* G-keys */
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for (i = 0; i < gkeys; i++)
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input_set_capability(input, EV_KEY, KEY_MACRO1 + i);
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/* M1 - M3 and MR keys */
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for (i = 0; i < 3; i++)
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input_set_capability(input, EV_KEY, KEY_MACRO_PRESET1 + i);
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input_set_capability(input, EV_KEY, KEY_MACRO_RECORD_START);
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/* Keys below the LCD, intended for controlling a menu on the LCD */
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for (i = 0; i < 5; i++)
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input_set_capability(input, EV_KEY, KEY_KBD_LCD_MENU1 + i);
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g15->input = input;
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input_set_drvdata(input, hdev);
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ret = input_register_device(input);
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if (ret)
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goto error_hw_stop;
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return 0;
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error_hw_stop:
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hid_hw_stop(hdev);
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return ret;
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}
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static const struct hid_device_id lg_g15_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
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USB_DEVICE_ID_LOGITECH_G15_LCD),
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.driver_data = LG_G15 },
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{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH,
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USB_DEVICE_ID_LOGITECH_G15_V2_LCD),
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.driver_data = LG_G15_V2 },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, lg_g15_devices);
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static struct hid_driver lg_g15_driver = {
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.name = "lg-g15",
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.id_table = lg_g15_devices,
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.raw_event = lg_g15_raw_event,
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.probe = lg_g15_probe,
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};
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module_hid_driver(lg_g15_driver);
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MODULE_LICENSE("GPL");
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