From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f47.google.com (mail-dl1-f47.google.com [74.125.82.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82A3E3CC327 for ; Wed, 13 May 2026 23:14:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778714092; cv=none; b=tj66m2ZlEiLIlcLbEysvMfV5w15ESI7ytgBj3EI3qHK1QkWEujYEAQ6I1A4xqw0JI/b6QGfaFO9bIVX/vKEUQrD4RaFVQ6+V/vvJBgSwO71ssMX/K62M7ef4JrPP1v8Va+pl9dJXYqsBXALrxL1bKnm6iMuddIFQuh7Fr8thuQc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778714092; c=relaxed/simple; bh=TyBMfaPN26klz75TDAjTA7ODXmVJGveHB7RAWFFC9zI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hi1I08nUTLYI9LwCi/WsuvhjPE0zMy+6E7Gvbh05Y5vmvUJ4sMUR4y76lUDZ1dMBHFbyFIRhWE1+1+20hH6K1i2AMEltwjPEGPQbhpjBCbDnqgALrgV07/xf8c/dB4g+pTPPcWt/yK8m/HprQi5u8qsPVr8KPx1oM2kuEV0OIIM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=fwUmYapd; arc=none smtp.client-ip=74.125.82.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fwUmYapd" Received: by mail-dl1-f47.google.com with SMTP id a92af1059eb24-132c338a537so3267693c88.0 for ; Wed, 13 May 2026 16:14:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1778714090; x=1779318890; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=JaHPjWoXHdxCx0kf8Nc4kDCbwDBvgOTNTWDSn0zWbc8=; b=fwUmYapdr8RDhdptBufr6k9lR9W3fZ+uRVSCH2eQmO3Cp6ZABqrc79pkmqIoR2mvBR NPdas8U1JVBLzSn8/ze4lnYoAeLLXij3hMfktMWAKaCVncHf6VN6wPBpJ5EevnOexZON iBUPEJQqaYqwXoS78TC9DGY/YEziX62IyPlnqzPc6zx7OsdZdOocCYgqOvZnNq7Y+20w EDypA+zhD71EE3Di5xcCC7FcWyf8KVyxMHk+QA+6U172qL1+QdTQgFGrYhBLSw4b+rpC rVk56rVNasU0iy7yEVdqDQYdHhAy3Vi71TFS1kIcQU38qbsid8Rc5rHcknhJIq/6g2oK pznw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778714090; x=1779318890; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=JaHPjWoXHdxCx0kf8Nc4kDCbwDBvgOTNTWDSn0zWbc8=; b=sqg/uSsDSyRWlLTL1LLWAh/g8HJlsGybTH2Vfvs2nlqkBdwa3yzwQK+Fqrmi9sIgc9 UrFHCGUtdMTySNmL3lm0bqmrWXyVBV2wOP3Nm6o2aOvF7aJPUpMHQu5P+tXhybsRlug5 kHjgmjz+xx5DIXn7Tcbwhl8ZkeMF+mRniVWCy3l1o8TwqFHZXreKME6CfZldNQxY7Uzj 1+a4LrsZYJKTIh39ZCKWBJ8QTxN1EQOaF1GUz+vhPVYu7yyesTuUkYxt33ykGWBQ7onc T/A+kPTt4JYFf5plfAXjGfz67jR79yxRarA1yOWqHmJqPaYvz7L7lX+Am/APtMYF9xD1 ziBg== X-Forwarded-Encrypted: i=1; AFNElJ8fmvX9BO4lxe5qEPNY4tsQXV4PJLcdrxLmoI9cEyqv0HvofDtmn+JXZ5k3xAYKrRcWrl1Vn2VlezI=@vger.kernel.org X-Gm-Message-State: AOJu0Yx58nAwhf7Qg0mbglTl1NpysJ92k79tuzmjUqn7CQqxHNkQcHnM hF3Wwe++epjVH1Y4uEbTrUK9v2qiuC5UA/YH2jLG28nUxRZTgdJmWXbw X-Gm-Gg: Acq92OGMBnHLqo6mrS3+eeFKB5tDtKzDBLsl2D/0DLbAgkVYdqCeko2azY31dgRRI0m EpTpV371AzWXglPpmUoBV6K79OnIRQ47Eb66xKz1FZRDLd0bZviZWTh+oAALLE9TSy+uCP4dbka cvojgZcHX7xXCLNYVcYzNoXv+WBKdv9h+UyIIBMFeE6MQCNy5W5ug/HyEcDgD734M4yMG4bWg1Q UXDWgD8Iyxe1V6xCaPDs4rrI6bxENMG9FnsuXExuFQd/OtQLflIKmurSFZHfGNh8tS91omrmkrz PpUHDvA2hRalA/H9Agn0mazav1A3LwitAW7Euc1XDS9hEC8kjJMwOq0Ni61yWFmg/QDuBVlcshm uUe38IPqu5r5jPIEZyvFJwrtrpTyxkfs5jNmf8eBRSRlMA9SLVAi4Yv9ZesmN82aRqYFy5JA8af ivLaLbkqBJjVx8qkCpISgOSsWp8y+ajmVCQ97JEOkFMGwDs0IqtRxYJXcf+sx+FmKMCf4lrRZHl 5RP X-Received: by 2002:a05:7022:608b:b0:133:52ca:7dcb with SMTP id a92af1059eb24-134c8b337e3mr855553c88.10.1778714089568; Wed, 13 May 2026 16:14:49 -0700 (PDT) Received: from lappy (108-228-232-20.lightspeed.sndgca.sbcglobal.net. [108.228.232.20]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-134cc2352f2sm1379258c88.10.2026.05.13.16.14.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 May 2026 16:14:49 -0700 (PDT) From: "Derek J. Clark" To: Jiri Kosina , Benjamin Tissoires Cc: "Pierre-Loup A . Griffais" , Denis Benato , Zhouwang Huang , "Derek J . Clark" , linux-input@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] HID: hid-msi: Add M-key mapping attributes Date: Wed, 13 May 2026 23:14:43 +0000 Message-ID: <20260513231445.3213501-3-derekjohn.clark@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260513231445.3213501-1-derekjohn.clark@gmail.com> References: <20260513231445.3213501-1-derekjohn.clark@gmail.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Adds attributes that allow for remapping the M-keys with up to 5 values when in macro mode. There are 2 mappable buttons on the rear of the device, M1 on the right and M2 on the left. When mapped, the events will fire from one of three event devices: gamepad buttons will fire from the device handled by xpad, while keyboard and mouse events will fire from respectively typed evdevs provided by the input core. Names of each mapping have been kept as close to the event that will fire from the evdev as possible, with context added to the ABS_ events on the direction of the movement. Initial reverse-engineering and implementation of this feature was done by Zhouwang Huang. I refactored the overall format to conform to kernel driver best practices and style guides. Claude was used as an initial reviewer of this patch. Assisted-by: Claude:claude-sonnet-4-6 Co-developed-by: Zhouwang Huang Signed-off-by: Zhouwang Huang Signed-off-by: Derek J. Clark --- v2: - Add mutex for SYNC_TO_ROM commands to ensure every SYNC is completed before more data is written to the MCU volatile memory. - Add mutex for profile_pending to ensure every profile action response is serialized to the generating command. --- drivers/hid/hid-msi.c | 398 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 397 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-msi.c b/drivers/hid/hid-msi.c index 8915942af15e6..13ba2747fdb66 100644 --- a/drivers/hid/hid-msi.c +++ b/drivers/hid/hid-msi.c @@ -40,6 +40,8 @@ #define CLAW_DINPUT_CFG_INTF_IN 0x82 #define CLAW_XINPUT_CFG_INTF_IN 0x83 +#define CLAW_KEYS_MAX 5 + enum claw_command_index { CLAW_COMMAND_TYPE_READ_PROFILE = 0x04, CLAW_COMMAND_TYPE_READ_PROFILE_ACK = 0x05, @@ -64,6 +66,17 @@ static const char * const claw_gamepad_mode_text[] = { [CLAW_GAMEPAD_MODE_DESKTOP] = "desktop", }; +enum claw_profile_ack_pending { + CLAW_NO_PENDING, + CLAW_M1_PENDING, + CLAW_M2_PENDING, +}; + +enum claw_key_index { + CLAW_KEY_M1, + CLAW_KEY_M2, +}; + enum claw_mkeys_function_index { CLAW_MKEY_FUNCTION_MACRO, CLAW_MKEY_FUNCTION_COMBO, @@ -76,6 +89,154 @@ static const char * const claw_mkeys_function_text[] = { [CLAW_MKEY_FUNCTION_DISABLED] = "disabled", }; +static const struct { + u8 code; + const char *name; +} claw_button_mapping_key_map[] = { + /* Gamepad buttons */ + { 0x01, "ABS_HAT0Y_UP" }, + { 0x02, "ABS_HAT0Y_DOWN" }, + { 0x03, "ABS_HAT0X_LEFT" }, + { 0x04, "ABS_HAT0X_RIGHT" }, + { 0x05, "BTN_TL" }, + { 0x06, "BTN_TR" }, + { 0x07, "BTN_THUMBL" }, + { 0x08, "BTN_THUMBR" }, + { 0x09, "BTN_SOUTH" }, + { 0x0a, "BTN_EAST" }, + { 0x0b, "BTN_NORTH" }, + { 0x0c, "BTN_WEST" }, + { 0x0d, "BTN_MODE" }, + { 0x0e, "BTN_SELECT" }, + { 0x0f, "BTN_START" }, + { 0x13, "BTN_TL2"}, + { 0x14, "BTN_TR2"}, + { 0x15, "ABS_Y_UP"}, + { 0x16, "ABS_Y_DOWN"}, + { 0x17, "ABS_X_LEFT"}, + { 0x18, "ABS_X_LEFT_RIGHT"}, + { 0x19, "ABS_RY_UP"}, + { 0x1a, "ABS_RY_DOWN"}, + { 0x1b, "ABS_RX_LEFT"}, + { 0x1c, "ABS_RX_RIGHT"}, + /* Keyboard keys */ + { 0x32, "KEY_ESC" }, + { 0x33, "KEY_F1" }, + { 0x34, "KEY_F2" }, + { 0x35, "KEY_F3" }, + { 0x36, "KEY_F4" }, + { 0x37, "KEY_F5" }, + { 0x38, "KEY_F6" }, + { 0x39, "KEY_F7" }, + { 0x3a, "KEY_F8" }, + { 0x3b, "KEY_F9" }, + { 0x3c, "KEY_F10" }, + { 0x3d, "KEY_F11" }, + { 0x3e, "KEY_F12" }, + { 0x3f, "KEY_GRAVE" }, + { 0x40, "KEY_1" }, + { 0x41, "KEY_2" }, + { 0x42, "KEY_3" }, + { 0x43, "KEY_4" }, + { 0x44, "KEY_5" }, + { 0x45, "KEY_6" }, + { 0x46, "KEY_7" }, + { 0x47, "KEY_8" }, + { 0x48, "KEY_9" }, + { 0x49, "KEY_0" }, + { 0x4a, "KEY_MINUS" }, + { 0x4b, "KEY_EQUAL" }, + { 0x4c, "KEY_BACKSPACE" }, + { 0x4d, "KEY_TAB" }, + { 0x4e, "KEY_Q" }, + { 0x4f, "KEY_W" }, + { 0x50, "KEY_E" }, + { 0x51, "KEY_R" }, + { 0x52, "KEY_T" }, + { 0x53, "KEY_Y" }, + { 0x54, "KEY_U" }, + { 0x55, "KEY_I" }, + { 0x56, "KEY_O" }, + { 0x57, "KEY_P" }, + { 0x58, "KEY_LEFTBRACE" }, + { 0x59, "KEY_RIGHTBRACE" }, + { 0x5a, "KEY_BACKSLASH" }, + { 0x5b, "KEY_CAPSLOCK" }, + { 0x5c, "KEY_A" }, + { 0x5d, "KEY_S" }, + { 0x5e, "KEY_D" }, + { 0x5f, "KEY_F" }, + { 0x60, "KEY_G" }, + { 0x61, "KEY_H" }, + { 0x62, "KEY_J" }, + { 0x63, "KEY_K" }, + { 0x64, "KEY_L" }, + { 0x65, "KEY_SEMICOLON" }, + { 0x66, "KEY_APOSTROPHE" }, + { 0x67, "KEY_ENTER" }, + { 0x68, "KEY_LEFTSHIFT" }, + { 0x69, "KEY_Z" }, + { 0x6a, "KEY_X" }, + { 0x6b, "KEY_C" }, + { 0x6c, "KEY_V" }, + { 0x6d, "KEY_B" }, + { 0x6e, "KEY_N" }, + { 0x6f, "KEY_M" }, + { 0x70, "KEY_COMMA" }, + { 0x71, "KEY_DOT" }, + { 0x72, "KEY_SLASH" }, + { 0x73, "KEY_RIGHTSHIFT" }, + { 0x74, "KEY_LEFTCTRL" }, + { 0x75, "KEY_LEFTMETA" }, + { 0x76, "KEY_LEFTALT" }, + { 0x77, "KEY_SPACE" }, + { 0x78, "KEY_RIGHTALT" }, + { 0x79, "KEY_RIGHTCTRL" }, + { 0x7a, "KEY_INSERT" }, + { 0x7b, "KEY_HOME" }, + { 0x7c, "KEY_PAGEUP" }, + { 0x7d, "KEY_DELETE" }, + { 0x7e, "KEY_END" }, + { 0x7f, "KEY_PAGEDOWN" }, + { 0x8a, "KEY_KPENTER" }, + { 0x8b, "KEY_KP0" }, + { 0x8c, "KEY_KP1" }, + { 0x8d, "KEY_KP2" }, + { 0x8e, "KEY_KP3" }, + { 0x8f, "KEY_KP4" }, + { 0x90, "KEY_KP5" }, + { 0x91, "KEY_KP6" }, + { 0x92, "KEY_KP7" }, + { 0x93, "KEY_KP8" }, + { 0x94, "KEY_KP9" }, + { 0x95, "MD_PLAY" }, + { 0x96, "MD_STOP" }, + { 0x97, "MD_NEXT" }, + { 0x98, "MD_PREV" }, + { 0x99, "MD_VOL_UP" }, + { 0x9a, "MD_VOL_DOWN" }, + { 0x9b, "MD_VOL_MUTE" }, + { 0x9c, "KEY_F23" }, + /* Mouse events */ + { 0xc8, "BTN_LEFT" }, + { 0xc9, "BTN_MIDDLE" }, + { 0xca, "BTN_RIGHT" }, + { 0xcb, "BTN_SIDE" }, + { 0xcc, "BTN_EXTRA" }, + { 0xcd, "REL_WHEEL_UP" }, + { 0xce, "REL_WHEEL_DOWN" }, +}; + +static const u16 button_mapping_addr_old[] = { + 0x007a, /* M1 */ + 0x011f, /* M2 */ +}; + +static const u16 button_mapping_addr_new[] = { + 0x00bb, /* M1 */ + 0x0164, /* M2 */ +}; + struct claw_command_report { u8 report_id; u8 padding[2]; @@ -86,16 +247,24 @@ struct claw_command_report { struct claw_drvdata { /* MCU General Variables */ + enum claw_profile_ack_pending profile_pending; struct completion send_cmd_complete; struct delayed_work cfg_resume; struct delayed_work cfg_setup; + struct mutex profile_mutex; /* mutex for profile_pending calls */ struct hid_device *hdev; struct mutex cfg_mutex; /* mutex for synchronous data */ + struct mutex rom_mutex; /* mutex for SYNC_TO_ROM calls */ + u16 bcd_device; u8 ep; /* Gamepad Variables */ enum claw_mkeys_function_index mkeys_function; enum claw_gamepad_mode_index gamepad_mode; + u8 m1_codes[CLAW_KEYS_MAX]; + u8 m2_codes[CLAW_KEYS_MAX]; + const u16 *bmap_addr; + bool bmap_support; }; static int get_endpoint_address(struct hid_device *hdev) @@ -125,6 +294,31 @@ static int claw_gamepad_mode_event(struct claw_drvdata *drvdata, return 0; } +static int claw_profile_event(struct claw_drvdata *drvdata, struct claw_command_report *cmd_rep) +{ + u8 *codes; + int i; + + switch (drvdata->profile_pending) { + case CLAW_M1_PENDING: + case CLAW_M2_PENDING: + codes = (drvdata->profile_pending == CLAW_M1_PENDING) ? + drvdata->m1_codes : drvdata->m2_codes; + /* Extract key codes; replace disabled (0xff) with 0x00, which is (null) in _show */ + for (i = 0; i < CLAW_KEYS_MAX; i++) + codes[i] = (cmd_rep->data[6 + i] != 0xff) ? cmd_rep->data[6 + i] : 0x00; + break; + default: + dev_warn(&drvdata->hdev->dev, + "Got profile event without changes pending from command: %x\n", + cmd_rep->cmd); + return -EINVAL; + } + drvdata->profile_pending = CLAW_NO_PENDING; + + return 0; +} + static int claw_raw_event(struct claw_drvdata *drvdata, struct hid_report *report, u8 *data, int size) { @@ -146,6 +340,9 @@ static int claw_raw_event(struct claw_drvdata *drvdata, struct hid_report *repor case CLAW_COMMAND_TYPE_GAMEPAD_MODE_ACK: ret = claw_gamepad_mode_event(drvdata, cmd_rep); break; + case CLAW_COMMAND_TYPE_READ_PROFILE_ACK: + ret = claw_profile_event(drvdata, cmd_rep); + break; case CLAW_COMMAND_TYPE_ACK: break; default: @@ -366,6 +563,161 @@ static ssize_t reset_store(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_WO(reset); +static int button_mapping_name_to_code(const char *name) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(claw_button_mapping_key_map); i++) { + if (!strcmp(name, claw_button_mapping_key_map[i].name)) + return claw_button_mapping_key_map[i].code; + } + + return -EINVAL; +} + +static const char *button_mapping_code_to_name(u8 code) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(claw_button_mapping_key_map); i++) { + if (claw_button_mapping_key_map[i].code == code) + return claw_button_mapping_key_map[i].name; + } + + return NULL; +} + +static int claw_buttons_store(struct device *dev, const char *buf, u8 mkey_idx) +{ + struct hid_device *hdev = to_hid_device(dev); + struct claw_drvdata *drvdata = hid_get_drvdata(hdev); + u8 data[] = { 0x01, (drvdata->bmap_addr[mkey_idx] >> 8) & 0xff, + drvdata->bmap_addr[mkey_idx] & 0xff, 0x07, + 0x04, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff }; + size_t len = ARRAY_SIZE(data); + int ret, key_count, i; + char **raw_keys; + + raw_keys = argv_split(GFP_KERNEL, buf, &key_count); + if (!raw_keys) + return -ENOMEM; + + guard(mutex)(&drvdata->rom_mutex); /* all err_free paths must be in scope */ + if (key_count > CLAW_KEYS_MAX) { + ret = -EINVAL; + goto err_free; + } + + if (key_count == 0) + goto set_buttons; + + for (i = 0; i < key_count; i++) { + ret = button_mapping_name_to_code(raw_keys[i]); + if (ret < 0) + goto err_free; + + data[6 + i] = ret; + } + +set_buttons: + ret = claw_hw_output_report(hdev, CLAW_COMMAND_TYPE_WRITE_PROFILE_DATA, data, len, 8); + if (ret < 0) + goto err_free; + + ret = claw_hw_output_report(hdev, CLAW_COMMAND_TYPE_SYNC_TO_ROM, NULL, 0, 8); + +err_free: + argv_free(raw_keys); + return ret; +} + +static int claw_buttons_show(struct device *dev, char *buf, enum claw_key_index m_key) +{ + struct hid_device *hdev = to_hid_device(dev); + struct claw_drvdata *drvdata = hid_get_drvdata(hdev); + u8 data[] = { 0x01, (drvdata->bmap_addr[m_key] >> 8) & 0xff, + drvdata->bmap_addr[m_key] & 0xff, 0x07 }; + size_t len = ARRAY_SIZE(data); + int i, ret, count = 0; + const char *name; + u8 *codes; + + codes = (m_key == CLAW_KEY_M1) ? drvdata->m1_codes : drvdata->m2_codes; + + guard(mutex)(&drvdata->profile_mutex); + drvdata->profile_pending = (m_key == CLAW_KEY_M1) ? CLAW_M1_PENDING : CLAW_M2_PENDING; + + ret = claw_hw_output_report(hdev, CLAW_COMMAND_TYPE_READ_PROFILE, data, len, 8); + if (ret) { + drvdata->profile_pending = CLAW_NO_PENDING; + return ret; + } + for (i = 0; i < CLAW_KEYS_MAX; i++) { + name = button_mapping_code_to_name(codes[i]); + if (name) + count += sysfs_emit_at(buf, count, "%s ", name); + } + + if (!count) + return sysfs_emit(buf, "(not set)\n"); + + buf[count - 1] = '\n'; + + return count; +} + +static ssize_t button_m1_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret; + + ret = claw_buttons_store(dev, buf, CLAW_KEY_M1); + if (ret) + return ret; + + return count; +} + +static ssize_t button_m1_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + return claw_buttons_show(dev, buf, CLAW_KEY_M1); +} +static DEVICE_ATTR_RW(button_m1); + +static ssize_t button_m2_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret; + + ret = claw_buttons_store(dev, buf, CLAW_KEY_M2); + if (ret) + return ret; + + return count; +} + +static ssize_t button_m2_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + return claw_buttons_show(dev, buf, CLAW_KEY_M2); +} +static DEVICE_ATTR_RW(button_m2); + +static ssize_t button_mapping_options_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int i, count = 0; + + for (i = 0; i < ARRAY_SIZE(claw_button_mapping_key_map); i++) + count += sysfs_emit_at(buf, count, "%s ", claw_button_mapping_key_map[i].name); + + buf[count - 1] = '\n'; + + return count; +} +static DEVICE_ATTR_RO(button_mapping_options); + static umode_t claw_gamepad_attr_is_visible(struct kobject *kobj, struct attribute *attr, int n) { @@ -378,10 +730,22 @@ static umode_t claw_gamepad_attr_is_visible(struct kobject *kobj, struct attribu return 0; } - return attr->mode; + /* Always show attrs available on all firmware */ + if (attr == &dev_attr_gamepad_mode.attr || + attr == &dev_attr_gamepad_mode_index.attr || + attr == &dev_attr_mkeys_function.attr || + attr == &dev_attr_mkeys_function_index.attr || + attr == &dev_attr_reset.attr) + return attr->mode; + + /* Hide button mapping attrs if it isn't supported */ + return drvdata->bmap_support ? attr->mode : 0; } static struct attribute *claw_gamepad_attrs[] = { + &dev_attr_button_m1.attr, + &dev_attr_button_m2.attr, + &dev_attr_button_mapping_options.attr, &dev_attr_gamepad_mode.attr, &dev_attr_gamepad_mode_index.attr, &dev_attr_mkeys_function.attr, @@ -432,8 +796,31 @@ static void cfg_resume_fn(struct work_struct *work) dev_err(&drvdata->hdev->dev, "Failed to set gamepad mode settings: %d\n", ret); } +static void claw_features_supported(struct claw_drvdata *drvdata) +{ + u8 major = (drvdata->bcd_device >> 8) & 0xff; + u8 minor = drvdata->bcd_device & 0xff; + + if (major == 0x01) { + drvdata->bmap_support = true; + if (minor >= 0x66) + drvdata->bmap_addr = button_mapping_addr_new; + else + drvdata->bmap_addr = button_mapping_addr_old; + return; + } + + if ((major == 0x02 && minor >= 0x17) || major >= 0x03) { + drvdata->bmap_support = true; + drvdata->bmap_addr = button_mapping_addr_new; + return; + } +} + static int claw_probe(struct hid_device *hdev, u8 ep) { + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + struct usb_device *udev = interface_to_usbdev(intf); struct claw_drvdata *drvdata; int ret; @@ -446,8 +833,17 @@ static int claw_probe(struct hid_device *hdev, u8 ep) drvdata->ep = ep; mutex_init(&drvdata->cfg_mutex); + mutex_init(&drvdata->profile_mutex); + mutex_init(&drvdata->rom_mutex); init_completion(&drvdata->send_cmd_complete); + /* Determine feature level from firmware version */ + drvdata->bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); + claw_features_supported(drvdata); + + if (!drvdata->bmap_support) + dev_dbg(&hdev->dev, "M-Key mapping is not supported. Update firmware to enable.\n"); + /* For control interface: open the HID transport for sending commands. */ ret = hid_hw_open(hdev); if (ret) -- 2.53.0