From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 776891EF0B0; Tue, 2 Sep 2025 09:14:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756804462; cv=none; b=tWUbH7kt/Ie3PgSdR4AJN+h9cow9ELJRYbCoUiQJHtn1njuNo2KnDgWff9qUpB7VnmnhPjmhVTKS+Sct9GPWC/DEI8zriXtOXT2xve62SYixF7gtibFX3xXjshF2fpHYNkF0qYT1lL52IFo5FEXDgw4PYr8ggfne/Wxfnv3pih4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756804462; c=relaxed/simple; bh=uaLNb7Yt5kWU/EWncV3ytsudg9MXOP5r+N9J3ZbF0pk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=YcB7+OQL/0n0dXoxaT8NUXN7vntOT+jEqi3QXtv9lMaCxjlgqSNatZG46uAMZiLxJuxtZKLCiBvxS5o4vlJxDBnGJ0GX9T5AuF7IbMxM0XvgTSuMf9elZqbB6e8A7/ICXewD/RlcvsJ4Yr5t4OMje2qKru82+YnqWkY1NgVTmZY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=j2pelOgo; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="j2pelOgo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B89BFC4CEF5; Tue, 2 Sep 2025 09:14:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756804462; bh=uaLNb7Yt5kWU/EWncV3ytsudg9MXOP5r+N9J3ZbF0pk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=j2pelOgo/sPbyQYgr6Z6M1xTPVxheS7+KmT+/RajR554dBP59SKwQzYD81FHoYDNb LJFYQ2bbqFlT43gu9QIZR9rQb/s6PXGt8LuTolOsMZVCqE8zsZaFI8QcGmJ24C+5ve nReKtM3ODebxMyQ5dLJ083Lscg5WwiwIylYOW5h8/ks5HIUol0pPCKcZwQ/5xv4s+9 0vQKFZ7b8GjVrfPwxmyVK6Dr5T4VKZ/L6lDQz7Rp4DfnYZRkReKv+0IhSdoJeL4xK+ kLKzW+2Bfuf1lHOyN+iKq7JL4MEZ+dLpcjmjT52VKmDRavndqTzDIebFGq2Tbq4yd6 tm2F9Ep+seqQA== Message-ID: Date: Tue, 2 Sep 2025 11:14:18 +0200 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5] HID: lg-g15 - Add support for Logitech G13. To: "Leo L. Schwab" Cc: Kate Hsuan , Jiri Kosina , Benjamin Tissoires , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250902003659.361934-2-ewhac@ewhac.org> From: Hans de Goede Content-Language: en-US, nl In-Reply-To: <20250902003659.361934-2-ewhac@ewhac.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi All, On 2-Sep-25 2:36 AM, Leo L. Schwab wrote: > The Logitech G13 is a gaming keypad with general-purpose macro keys, > four LED-backlit macro preset keys, five "menu" keys, backlight toggle > key, an analog thumbstick, RGB LED backlight, and a monochrome LCD > display. > > Support input event generation for all keys and the thumbstick, and > expose all LEDs. > > Signed-off-by: Leo L. Schwab > Reviewed-by: Hans de Goede > Tested-by: Kate Hsuan > --- > Changes in v5: > - None; resend v4 due to bounced email submission. Note to the HID maintainers, the brightness_hw_changed handling needs some work here, see the v3 thread discussion, so please do not merge this yet. Regards, Hans > Changes in v4: > - Minor changes recommended by Hans de Goede . > Changes in v3: > - Re-revise commit message. > - Conditionally compile the section depending on > CONFIG_LEDS_BRIGHTNESS_HW_CHANGED correctly this time. > - Use led-class-multicolor facilities for the RGB backlight. > - Changes recommended by Kate Hsuan : > - Use guard(mutex) construct. > - Fix numerous style nits. > Changes in v2: > - Add `#ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED` bracket around new > code segment dependent on that feature (fixes test robot build > error). > - Use `guard(mutex)` construct in new code (existing code left > unmodified). > - Commit message revised. > > drivers/hid/hid-ids.h | 1 + > drivers/hid/hid-lg-g15.c | 426 +++++++++++++++++++++++++++++++++++++-- > 2 files changed, 411 insertions(+), 16 deletions(-) > > diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h > index 33cc5820f2be..7ed1e402b80a 100644 > --- a/drivers/hid/hid-ids.h > +++ b/drivers/hid/hid-ids.h > @@ -870,6 +870,7 @@ > #define USB_DEVICE_ID_LOGITECH_DUAL_ACTION 0xc216 > #define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2 0xc218 > #define USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2 0xc219 > +#define USB_DEVICE_ID_LOGITECH_G13 0xc21c > #define USB_DEVICE_ID_LOGITECH_G15_LCD 0xc222 > #define USB_DEVICE_ID_LOGITECH_G11 0xc225 > #define USB_DEVICE_ID_LOGITECH_G15_V2_LCD 0xc227 > diff --git a/drivers/hid/hid-lg-g15.c b/drivers/hid/hid-lg-g15.c > index f8605656257b..62cb795c2393 100644 > --- a/drivers/hid/hid-lg-g15.c > +++ b/drivers/hid/hid-lg-g15.c > @@ -26,7 +26,11 @@ > #define LG_G510_FEATURE_BACKLIGHT_RGB 0x05 > #define LG_G510_FEATURE_POWER_ON_RGB 0x06 > > +#define LG_G13_FEATURE_M_KEYS_LEDS 0x05 > +#define LG_G13_FEATURE_BACKLIGHT_RGB 0x07 > + > enum lg_g15_model { > + LG_G13, > LG_G15, > LG_G15_V2, > LG_G510, > @@ -45,6 +49,12 @@ enum lg_g15_led_type { > LG_G15_LED_MAX > }; > > +struct g13_input_report { > + u8 report_id; /* Report ID is always set to 1. */ > + u8 joy_x, joy_y; > + u8 keybits[5]; > +}; > + > struct lg_g15_led { > union { > struct led_classdev cdev; > @@ -63,12 +73,172 @@ struct lg_g15_data { > struct mutex mutex; > struct work_struct work; > struct input_dev *input; > + struct input_dev *input_js; /* Separate joystick device for G13. */ > struct hid_device *hdev; > enum lg_g15_model model; > struct lg_g15_led leds[LG_G15_LED_MAX]; > bool game_mode_enabled; > }; > > +/********* G13 LED functions ***********/ > +/* > + * G13 retains no state across power cycles, and always powers up with the backlight on, > + * color #5AFF6E, all macro key LEDs off. > + */ > +static int lg_g13_get_leds_state(struct lg_g15_data *g15) > +{ > + u8 * const tbuf = g15->transfer_buf; > + int ret, high; > + > + /* RGB backlight. */ > + ret = hid_hw_raw_request(g15->hdev, LG_G13_FEATURE_BACKLIGHT_RGB, > + tbuf, 5, > + HID_FEATURE_REPORT, HID_REQ_GET_REPORT); > + if (ret != 5) { > + hid_err(g15->hdev, "Error getting backlight brightness: %d\n", ret); > + return (ret < 0) ? ret : -EIO; > + } > + > + /* Normalize RGB intensities against the highest component. */ > + high = max3(tbuf[1], tbuf[2], tbuf[3]); > + if (high) { > + g15->leds[LG_G15_KBD_BRIGHTNESS].red = > + DIV_ROUND_CLOSEST(tbuf[1] * 255, high); > + g15->leds[LG_G15_KBD_BRIGHTNESS].green = > + DIV_ROUND_CLOSEST(tbuf[2] * 255, high); > + g15->leds[LG_G15_KBD_BRIGHTNESS].blue = > + DIV_ROUND_CLOSEST(tbuf[3] * 255, high); > + g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = high; > + } else { > + g15->leds[LG_G15_KBD_BRIGHTNESS].red = 255; > + g15->leds[LG_G15_KBD_BRIGHTNESS].green = 255; > + g15->leds[LG_G15_KBD_BRIGHTNESS].blue = 255; > + g15->leds[LG_G15_KBD_BRIGHTNESS].brightness = 0; > + } > + > + /* Macro LEDs. */ > + ret = hid_hw_raw_request(g15->hdev, LG_G13_FEATURE_M_KEYS_LEDS, > + tbuf, 5, > + HID_FEATURE_REPORT, HID_REQ_GET_REPORT); > + if (ret != 5) { > + hid_err(g15->hdev, "Error getting macro LED brightness: %d\n", ret); > + return (ret < 0) ? ret : -EIO; > + } > + > + for (int i = LG_G15_MACRO_PRESET1; i < LG_G15_LED_MAX; ++i) > + g15->leds[i].brightness = tbuf[1] & (1 << (i - LG_G15_MACRO_PRESET1)); > + > + return 0; > +} > + > +static int lg_g13_kbd_led_write(struct lg_g15_data *g15, > + struct lg_g15_led *g15_led, > + enum led_brightness brightness) > +{ > + struct mc_subled const * const subleds = g15_led->mcdev.subled_info; > + u8 * const tbuf = g15->transfer_buf; > + int ret; > + > + guard(mutex)(&g15->mutex); > + > + led_mc_calc_color_components(&g15_led->mcdev, brightness); > + > + tbuf[0] = 5; > + tbuf[1] = subleds[0].brightness; > + tbuf[2] = subleds[1].brightness; > + tbuf[3] = subleds[2].brightness; > + tbuf[4] = 0; > + > + ret = hid_hw_raw_request(g15->hdev, LG_G13_FEATURE_BACKLIGHT_RGB, > + tbuf, 5, > + HID_FEATURE_REPORT, HID_REQ_SET_REPORT); > + if (ret != 5) { > + hid_err(g15->hdev, "Error setting backlight brightness: %d\n", ret); > + return (ret < 0) ? ret : -EIO; > + } > + > + g15_led->brightness = brightness; > + return 0; > +} > + > +static int lg_g13_kbd_led_set(struct led_classdev *led_cdev, enum led_brightness brightness) > +{ > + struct led_classdev_mc *mc = lcdev_to_mccdev(led_cdev); > + struct lg_g15_led *g15_led = > + container_of(mc, struct lg_g15_led, mcdev); > + struct lg_g15_data *g15 = dev_get_drvdata(led_cdev->dev->parent); > + > + /* Ignore LED off on unregister / keyboard unplug */ > + if (led_cdev->flags & LED_UNREGISTERING) > + return 0; > + > + return lg_g13_kbd_led_write(g15, g15_led, brightness); > +} > + > +static enum led_brightness lg_g13_kbd_led_get(struct led_classdev *led_cdev) > +{ > + struct led_classdev_mc const * const mc = lcdev_to_mccdev(led_cdev); > + struct lg_g15_led const *g15_led = > + container_of(mc, struct lg_g15_led, mcdev); > + > + return g15_led->brightness; > +} > + > +static int lg_g13_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); > + int i, ret; > + u8 * const tbuf = g15->transfer_buf; > + u8 val, mask = 0; > + > + /* Ignore LED off on unregister / keyboard unplug */ > + if (led_cdev->flags & LED_UNREGISTERING) > + return 0; > + > + guard(mutex)(&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 |= 1 << (i - LG_G15_MACRO_PRESET1); > + } > + > + tbuf[0] = 5; > + tbuf[1] = mask; > + tbuf[2] = 0; > + tbuf[3] = 0; > + tbuf[4] = 0; > + > + ret = hid_hw_raw_request(g15->hdev, LG_G13_FEATURE_M_KEYS_LEDS, > + tbuf, 5, > + HID_FEATURE_REPORT, HID_REQ_SET_REPORT); > + if (ret != 5) { > + hid_err(g15->hdev, "Error setting LED brightness: %d\n", ret); > + return (ret < 0) ? ret : -EIO; > + } > + > + g15_led->brightness = brightness; > + return 0; > +} > + > +static enum led_brightness lg_g13_mkey_led_get(struct led_classdev *led_cdev) > +{ > + /* > + * G13 doesn't change macro key LEDs behind our back, so they're > + * whatever we last set them to. > + */ > + struct lg_g15_led *g15_led = > + container_of(led_cdev, struct lg_g15_led, cdev); > + > + return g15_led->brightness; > +} > + > /******** G15 and G15 v2 LED functions ********/ > > static int lg_g15_update_led_brightness(struct lg_g15_data *g15) > @@ -390,6 +560,8 @@ static int lg_g15_get_initial_led_brightness(struct lg_g15_data *g15) > int ret; > > switch (g15->model) { > + case LG_G13: > + return lg_g13_get_leds_state(g15); > case LG_G15: > case LG_G15_V2: > return lg_g15_update_led_brightness(g15); > @@ -417,6 +589,116 @@ static int lg_g15_get_initial_led_brightness(struct lg_g15_data *g15) > > /******** Input functions ********/ > > +/** > + * g13_input_report.keybits[] is not 32-bit aligned, so we can't use the bitops macros. > + * > + * @ary: Pointer to array of u8s > + * @b: Bit index into ary, LSB first. Not range checked. > + */ > +#define TEST_BIT(ary, b) ((1 << ((b) & 7)) & (ary)[(b) >> 3]) > + > +/* Table mapping keybits[] bit positions to event codes. */ > +/* Note: Indices are discontinuous to aid readability. */ > +static const u16 g13_keys_for_bits[] = { > + /* Main keypad - keys G1 - G22 */ > + [0] = KEY_MACRO1, > + [1] = KEY_MACRO2, > + [2] = KEY_MACRO3, > + [3] = KEY_MACRO4, > + [4] = KEY_MACRO5, > + [5] = KEY_MACRO6, > + [6] = KEY_MACRO7, > + [7] = KEY_MACRO8, > + [8] = KEY_MACRO9, > + [9] = KEY_MACRO10, > + [10] = KEY_MACRO11, > + [11] = KEY_MACRO12, > + [12] = KEY_MACRO13, > + [13] = KEY_MACRO14, > + [14] = KEY_MACRO15, > + [15] = KEY_MACRO16, > + [16] = KEY_MACRO17, > + [17] = KEY_MACRO18, > + [18] = KEY_MACRO19, > + [19] = KEY_MACRO20, > + [20] = KEY_MACRO21, > + [21] = KEY_MACRO22, > + > + /* LCD menu buttons. */ > + [24] = KEY_KBD_LCD_MENU5, /* "Next page" button */ > + [25] = KEY_KBD_LCD_MENU1, /* Left-most */ > + [26] = KEY_KBD_LCD_MENU2, > + [27] = KEY_KBD_LCD_MENU3, > + [28] = KEY_KBD_LCD_MENU4, /* Right-most */ > + > + /* Macro preset and record buttons; have red LEDs under them. */ > + [29] = KEY_MACRO_PRESET1, > + [30] = KEY_MACRO_PRESET2, > + [31] = KEY_MACRO_PRESET3, > + [32] = KEY_MACRO_RECORD_START, > + > + /* 33-35 handled by joystick device. */ > + > + /* Backlight toggle. */ > + [37] = KEY_LIGHTS_TOGGLE, > +}; > + > +#define G13_JS_KEYBITS_OFFSET 33 > + > +static const u16 g13_keys_for_bits_js[] = { > + /* Joystick buttons */ > + /* These keybits are at bit indices 33, 34, and 35. */ > + BTN_BASE, /* Left side */ > + BTN_BASE2, /* Bottom side */ > + BTN_THUMB, /* Stick depress */ > +}; > + > +static int lg_g13_event(struct lg_g15_data *g15, u8 const *data) > +{ > + struct g13_input_report const * const rep = (struct g13_input_report *) data; > + int i, val; > + > + /* > + * Main macropad and menu keys. > + * Emit key events defined for each bit position. > + */ > + for (i = 0; i < ARRAY_SIZE(g13_keys_for_bits); ++i) { > + if (g13_keys_for_bits[i]) { > + val = TEST_BIT(rep->keybits, i); > + input_report_key(g15->input, g13_keys_for_bits[i], val); > + } > + } > + input_sync(g15->input); > + > + /* > + * Joystick. > + * Emit button and deflection events. > + */ > + for (i = 0; i < ARRAY_SIZE(g13_keys_for_bits_js); ++i) { > + val = TEST_BIT(rep->keybits, i + G13_JS_KEYBITS_OFFSET); > + input_report_key(g15->input_js, g13_keys_for_bits_js[i], val); > + } > + input_report_abs(g15->input_js, ABS_X, rep->joy_x); > + input_report_abs(g15->input_js, ABS_Y, rep->joy_y); > + input_sync(g15->input_js); > + > + if (IS_ENABLED(CONFIG_LEDS_BRIGHTNESS_HW_CHANGED)) { > + /* > + * Bit 23 of keybits[] reports the current backlight on/off > + * state. If it has changed from the last cached value, apply > + * an update. > + */ > + bool hw_brightness_changed = (!!TEST_BIT(rep->keybits, 23)) > + ^ (g15->leds[0].cdev.brightness_hw_changed > 0); > + if (hw_brightness_changed) > + led_classdev_notify_brightness_hw_changed( > + &g15->leds[0].cdev, > + TEST_BIT(rep->keybits, 23) ? LED_FULL : LED_OFF); > + } > + > + return 0; > +} > + > /* 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) > { > @@ -572,6 +854,10 @@ static int lg_g15_raw_event(struct hid_device *hdev, struct hid_report *report, > return 0; > > switch (g15->model) { > + case LG_G13: > + if (data[0] == 0x01 && size == sizeof(struct g13_input_report)) > + return lg_g13_event(g15, data); > + break; > case LG_G15: > if (data[0] == 0x02 && size == 9) > return lg_g15_event(g15, data); > @@ -616,13 +902,22 @@ static void lg_g15_setup_led_rgb(struct lg_g15_data *g15, int index) > { > int i; > struct mc_subled *subled_info; > - > - g15->leds[index].mcdev.led_cdev.brightness_set_blocking = > - lg_g510_kbd_led_set; > - g15->leds[index].mcdev.led_cdev.brightness_get = > - lg_g510_kbd_led_get; > - g15->leds[index].mcdev.led_cdev.max_brightness = 255; > - g15->leds[index].mcdev.num_colors = 3; > + struct lg_g15_led * const gled = &g15->leds[index]; > + > + if (g15->model == LG_G13) { > + gled->mcdev.led_cdev.brightness_set_blocking = > + lg_g13_kbd_led_set; > + gled->mcdev.led_cdev.brightness_get = > + lg_g13_kbd_led_get; > + gled->mcdev.led_cdev.flags = LED_BRIGHT_HW_CHANGED; > + } else { > + gled->mcdev.led_cdev.brightness_set_blocking = > + lg_g510_kbd_led_set; > + gled->mcdev.led_cdev.brightness_get = > + lg_g510_kbd_led_get; > + } > + gled->mcdev.led_cdev.max_brightness = 255; > + gled->mcdev.num_colors = 3; > > subled_info = devm_kcalloc(&g15->hdev->dev, 3, sizeof(*subled_info), GFP_KERNEL); > if (!subled_info) > @@ -632,20 +927,20 @@ static void lg_g15_setup_led_rgb(struct lg_g15_data *g15, int index) > switch (i + 1) { > case LED_COLOR_ID_RED: > subled_info[i].color_index = LED_COLOR_ID_RED; > - subled_info[i].intensity = g15->leds[index].red; > + subled_info[i].intensity = gled->red; > break; > case LED_COLOR_ID_GREEN: > subled_info[i].color_index = LED_COLOR_ID_GREEN; > - subled_info[i].intensity = g15->leds[index].green; > + subled_info[i].intensity = gled->green; > break; > case LED_COLOR_ID_BLUE: > subled_info[i].color_index = LED_COLOR_ID_BLUE; > - subled_info[i].intensity = g15->leds[index].blue; > + subled_info[i].intensity = gled->blue; > break; > } > subled_info[i].channel = i; > } > - g15->leds[index].mcdev.subled_info = subled_info; > + gled->mcdev.subled_info = subled_info; > } > > static int lg_g15_register_led(struct lg_g15_data *g15, int i, const char *name) > @@ -656,6 +951,23 @@ static int lg_g15_register_led(struct lg_g15_data *g15, int i, const char *name) > g15->leds[i].cdev.name = name; > > switch (g15->model) { > + case LG_G13: > + if (i < LG_G15_BRIGHTNESS_MAX) { > + /* RGB backlight. */ > + lg_g15_setup_led_rgb(g15, i); > + ret = devm_led_classdev_multicolor_register_ext(&g15->hdev->dev, > + &g15->leds[i].mcdev, > + NULL); > + } else { > + /* Macro keys */ > + g15->leds[i].cdev.brightness_set_blocking = lg_g13_mkey_led_set; > + g15->leds[i].cdev.brightness_get = lg_g13_mkey_led_get; > + g15->leds[i].cdev.max_brightness = 1; > + > + ret = devm_led_classdev_register(&g15->hdev->dev, > + &g15->leds[i].cdev); > + } > + break; > case LG_G15: > case LG_G15_V2: > g15->leds[i].cdev.brightness_get = lg_g15_led_get; > @@ -702,11 +1014,9 @@ static int lg_g15_register_led(struct lg_g15_data *g15, int i, const char *name) > } > > /* 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) > +static void lg_g15_init_input_dev_core(struct hid_device *hdev, struct input_dev *input, > + char const *name) > { > - int i; > - > input->name = name; > input->phys = hdev->phys; > input->uniq = hdev->uniq; > @@ -717,12 +1027,42 @@ static void lg_g15_init_input_dev(struct hid_device *hdev, struct input_dev *inp > input->dev.parent = &hdev->dev; > input->open = lg_g15_input_open; > input->close = lg_g15_input_close; > +} > + > +static void lg_g15_init_input_dev(struct hid_device *hdev, struct input_dev *input, > + const char *name) > +{ > + int i; > + > + lg_g15_init_input_dev_core(hdev, input, name); > > /* 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 void lg_g13_init_input_dev(struct hid_device *hdev, > + struct input_dev *input, const char *name, > + struct input_dev *input_js, const char *name_js) > +{ > + /* Macropad. */ > + lg_g15_init_input_dev_core(hdev, input, name); > + for (int i = 0; i < ARRAY_SIZE(g13_keys_for_bits); ++i) { > + if (g13_keys_for_bits[i]) > + input_set_capability(input, EV_KEY, g13_keys_for_bits[i]); > + } > + > + /* OBTW, we're a joystick, too... */ > + lg_g15_init_input_dev_core(hdev, input_js, name_js); > + for (int i = 0; i < ARRAY_SIZE(g13_keys_for_bits_js); ++i) > + input_set_capability(input_js, EV_KEY, g13_keys_for_bits_js[i]); > + > + input_set_capability(input_js, EV_ABS, ABS_X); > + input_set_abs_params(input_js, ABS_X, 0, 255, 0, 0); > + input_set_capability(input_js, EV_ABS, ABS_Y); > + input_set_abs_params(input_js, ABS_Y, 0, 255, 0, 0); > +} > + > static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id) > { > static const char * const led_names[] = { > @@ -739,7 +1079,7 @@ static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id) > unsigned int connect_mask = 0; > bool has_ff000000 = false; > struct lg_g15_data *g15; > - struct input_dev *input; > + struct input_dev *input, *input_js; > struct hid_report *rep; > int ret, i, gkeys = 0; > > @@ -778,6 +1118,25 @@ static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id) > hid_set_drvdata(hdev, (void *)g15); > > switch (g15->model) { > + case LG_G13: > + /* > + * The G13 has an analog thumbstick with nearby buttons. Some > + * libraries and applications are known to ignore devices that > + * don't "look like" a joystick, and a device with two ABS axes > + * and 25+ macro keys would confuse them. > + * > + * Create an additional input device dedicated to appear as a > + * simplified joystick (two ABS axes, three BTN buttons). > + */ > + input_js = devm_input_allocate_device(&hdev->dev); > + if (!input_js) > + return -ENOMEM; > + g15->input_js = input_js; > + input_set_drvdata(input_js, hdev); > + > + connect_mask = HID_CONNECT_HIDRAW; > + gkeys = 25; > + break; > case LG_G15: > INIT_WORK(&g15->work, lg_g15_leds_changed_work); > /* > @@ -859,6 +1218,34 @@ static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id) > goto error_hw_stop; > > return 0; /* All done */ > + } else if (g15->model == LG_G13) { > + static char const * const g13_led_names[] = { > + /* Backlight is shared between LCD and keys. */ > + "g13:rgb:kbd_backlight", > + NULL, /* Keep in sync with led_type enum */ > + "g13:red:macro_preset_1", > + "g13:red:macro_preset_2", > + "g13:red:macro_preset_3", > + "g13:red:macro_record", > + }; > + lg_g13_init_input_dev(hdev, > + input, "Logitech G13 Gaming Keypad", > + input_js, "Logitech G13 Thumbstick"); > + ret = input_register_device(input); > + if (ret) > + goto error_hw_stop; > + ret = input_register_device(input_js); > + if (ret) > + goto error_hw_stop; > + > + for (i = 0; i < ARRAY_SIZE(g13_led_names); ++i) { > + if (g13_led_names[i]) { > + ret = lg_g15_register_led(g15, i, g13_led_names[i]); > + if (ret) > + goto error_hw_stop; > + } > + } > + return 0; > } > > /* Setup and register input device */ > @@ -903,6 +1290,13 @@ static int lg_g15_probe(struct hid_device *hdev, const struct hid_device_id *id) > } > > static const struct hid_device_id lg_g15_devices[] = { > + /* > + * The G13 is a macropad-only device with an LCD, LED backlighing, > + * and joystick. > + */ > + { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, > + USB_DEVICE_ID_LOGITECH_G13), > + .driver_data = LG_G13 }, > /* 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),