From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.128.51 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794697727; b=p53duJZnUM07J2tJHjqc6RJqWgGOzaEvaeHMWx5YCzJPfzQ3EsnFbpjPZnnrezcHNN9y DCwhA5tYG9ZKzWrFZb3byOd/0LeaFvpq99DI9ubZZdDB/o3E9M1TlH5nOVux9dEgoXMCZ 8nBLIBsYJiK9Fjt7FkRBck9/Fl+QbRWiZQOapqIrakdV6fRuT7FRBXRRFxAhEiFyIDdH7 2boeysVSXMhDCE+8NG+FKy2XCCJrmmLpq/2RVgjqUdT64PzX6vc3YsmiVCEXtEngULkBD Dh4YUBMCx5CAbEXDpFSxqshw6P/2HnozUykd6xt/OSyuxHcSEs/lPeJII7GT3cxw07Q== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794697727; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=Fi6R394tpyULzxVmbC3Vx9uenJnEBMSaSgcdI1bRBcQ=; b=0obAkLTEBBPg2kFXmcFwmOyf8//7eEIvvrNgma27b82m/Q6R70GEw5LRYio9hwpSoPyO EymLbMvCPstQAuIv8GM4Mxq/M8Bth7ryVdd6F6PcXUrk+dsNKXGJ1pVulg9/RPOlyZRbx aMq5iUzQVv7pApFdF5gb3E0S/zp4vnTsc6KR0c47GcU5N/TDi/j5ay9W5qtn3qA2/KBHk deF5QpecvvdqpAmPVTjdFH021t6DpzPX50c2WJvIdC/wX/+/atgOFtiNcoLCznCN1nQvU AUzWvhbeCRCGYevcH+xzixuHy3FXYlkQCTxjvZj8ysdrbufBwXHrOVyxrFVJ8gPql5g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=tYrbH102; arc=none smtp.remote-ip=209.85.128.51 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AF53660A3834 for ; Sat, 14 Nov 2026 23:08:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org AF53660A3834 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.a=rsa-sha256 header.s=20260707 header.b=tYrbH102 Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-4bb6adaf0f1so559385e9.0 for ; Sat, 14 Nov 2026 15:08:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1794697725; x=1795302525; 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:content-type; bh=Fi6R394tpyULzxVmbC3Vx9uenJnEBMSaSgcdI1bRBcQ=; b=tYrbH1021A6e30gu05YxLCaxzs6ToQ/kzYtqbPcT9faITS/XXPPXPpM8RknxHrTyGp TSubDOwdHrMXpg8mJ6yw7t5ClHY1G4P/mBAO8iztKfxIfp5m9xKhKap4aMgZOYVSGxWm xHNYPDQ1aew49UzyRchGogeFItt1iE0PSXFz4KwXsD9sQ+8SCo6P4Fhsb8sHJvt7eayR q3yX9ckzyQk81vCS+BOT5aVHZlENGNEeHV7ByBQ5H4MqBa7wpn/1q8mfa6QkRQwy50VU 3+21jK5Ic8ZISZ7AM2MFYmczLCJJDOrjqg05u0SWlYVLUl6Jfh6vLWC5AmAzbvf89bVA EFRQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794697725; x=1795302525; 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:content-type; bh=Fi6R394tpyULzxVmbC3Vx9uenJnEBMSaSgcdI1bRBcQ=; b=WGZjoKv6ZGsEkkngKmH3Iftr0Nu6VEgul1Xi33tRBHTw8/4KDUWJnIKXuwPcabFDW5 wRPBZ1ej2HBUkJLPZSex164tNX83J8C/d01K4D0hRpZzeQMtWtTmYUKcbudQ3LuxvylB f96VcGifbRbe734R7B0ntkJ2g4UMtZbgnpqLK9bil9LKarDMbe1nlUAAV/uzPFHkFZG5 s/h/3flkGHwyb/WWvY9Bhaty6CloV8H3VIHPY+wv5Gn9182/opUK1WSzHyTshB6+I0Vv eiBk7ar3NLS8n8X6U3EpiASpZCTyazE34X9c0c0XwRTzlQQ8C2I3QUvdHt3NvEfqI+2v cjLg== X-Forwarded-Encrypted: i=1; AL+hErHCjiJ2WHHYSTcfkoXnf2jVAoxUB6tzPzZaa2HcMBpU1BC24pE/DkdFKQqG722t5Bd6fkBQmSGuxLfogg==@vger.kernel.org X-Gm-Message-State: APuU4Z+VYEZr9cZjvBLfJ4KJhCEh3vWXIVqH3bYFUDxQHUl6fdfe3B3J k7rsYWiigpNDkXViY4SZxBwYJz9ZbTFD5GSYt92vMCIh/hjInlR6jc0E X-Gm-Gg: AYBFou3x9umdHrAV634bY6PEPuKt3NKNcRfqrYGc/NekzLpKf2nMr3s10/f/XOJGUss tJmpY5HQ1XAflKDyz7QOA2atpy6bQZixmnlm3bmA+TwEV7vCsCtOkC5q8bygcgPEuOMRSNVzgBM OQi5owOQgDIEmpz0sq2hJmF153QtdLhXDQEKhRi6nM7UgYVLLjQZQuSpuPpox4UKLIJRMsflmUU d0PsoGroOeVIaTNOmO1iLMYyWmoBG5FaMvd/UgLmBQ2yX2f0qMpAEnGa8mUWywarnjrq1DuNqq5 o7eMnxmeP3h0ilnxvEUoNolBdDThm+rTUw0AgSjxv5m9rrx97AvVbi9KlPd8LHGhBM3OUQqJQQ1 sUi6aeEGMVi9b5BnE38jYh3IStBGokZ8ZtFRIwoO1acTwdsxb8nNymHrjq4M7oPvUa6AfhjmOLn PfV6uYC7kiqDHQRh4qswbkUNKviVZu8Lc7jSB7MsqsGg85N/wG+jD0db227ySRkBdWugOz/4PqG Lx8kkjduEzB+isz2gODOXvvzQdbmoOjqLbZgprs1K4SRnWzpCwx+UeeLdNyOr9gGOVj4WrNDEVp zZ1gpF69R9ZnykBUMLfBXaPg6+Fm+azgGiy0YBeKhB44Gc6VQJI= X-Received: by 2002:a05:600c:1553:b0:4bb:5e6b:49e with SMTP id 5b1f17b1804b1-4bb5e6b0656mr94794265e9.6.1794697725036; Sat, 14 Nov 2026 15:08:45 -0800 (PST) Received: from m2.. ([37.142.149.161]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-49c5d03b10fsm14910018f8f.1.2026.11.14.15.08.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Nov 2026 15:08:44 -0800 (PST) From: Michael Zaidman To: Jiri Kosina , Benjamin Tissoires Cc: Linus Walleij , Bartosz Golaszewski , Greg Kroah-Hartman , Jiri Slaby , Raman Varabets , Germain Hebert , Christina Quast , Rio Liu , Bruno Giacomazzi , linux-input@vger.kernel.org, linux-serial@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, Michael Zaidman Subject: [PATCH v3 09/16] HID: ft260: group sysfs attrs per HID interface Date: Sun, 15 Nov 2026 01:07:53 +0200 Message-ID: <20261114230800.1344401-10-michael.zaidman@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261114230800.1344401-1-michael.zaidman@gmail.com> References: <20261114230800.1344401-1-michael.zaidman@gmail.com> X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Split the single sysfs attribute group into per-interface groups based on chip mode (DCNF0/DCNF1): - I2C-only (mode 1): I2C and GPIO attributes on the I2C HID interface - Dual mode (0/3): hid_over_i2c_en, i2c_reset and clock on the I2C interface; GPIO and UART attrs on the UART interface - UART-only (mode 2): GPIO and UART attrs on the UART interface i2c_enable is GPIO-related too: it switches GPIO0 and GPIO1 between I2C and GPIO, and its store updates gpio_en of its own interface. So it is on the interface with the gpiochip, the UART interface in modes 0 and 3. i2c_reset is an I2C attribute, so it is only on the I2C interface and not in the UART group, which holds the GPIO and UART attributes. Signed-off-by: Michael Zaidman --- v2: Fixes for the issues reported by Sashiko: - The i2c_enable attribute was missing in modes 0 and 3; it is now in the UART group, with the gpiochip. - The i2c_reset attribute, an I2C attribute, is no longer in the UART group. v3: The err_register_tty path, which patch 3 adds to ft260_uart_probe(), removes the UART attribute group of this patch. --- drivers/hid/hid-ft260.c | 63 ++++++++++++++++++++++++++++++++++------- 1 file changed, 53 insertions(+), 10 deletions(-) diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c index d795355fc26b..b68cb0748a23 100644 --- a/drivers/hid/hid-ft260.c +++ b/drivers/hid/hid-ft260.c @@ -1633,7 +1633,7 @@ static ssize_t i2c_reset_store(struct device *kdev, } static DEVICE_ATTR_WO(i2c_reset); -static const struct attribute_group ft260_attr_group = { +static const struct attribute_group ft260_i2c_chip_mode_1_attr_group = { .attrs = (struct attribute *[]) { &dev_attr_chip_mode.attr, &dev_attr_pwren_status.attr, @@ -1644,8 +1644,6 @@ static const struct attribute_group ft260_attr_group = { &dev_attr_gpio2_func.attr, &dev_attr_gpioa_func.attr, &dev_attr_gpiog_func.attr, - &dev_attr_uart_mode.attr, - &dev_attr_uart_dcd_ri.attr, &dev_attr_clock_ctl.attr, &dev_attr_i2c_reset.attr, &dev_attr_clock.attr, @@ -1653,6 +1651,32 @@ static const struct attribute_group ft260_attr_group = { } }; +static const struct attribute_group ft260_i2c_chip_mode_0_3_attr_group = { + .attrs = (struct attribute *[]) { + &dev_attr_hid_over_i2c_en.attr, + &dev_attr_i2c_reset.attr, + &dev_attr_clock.attr, + NULL + } +}; + +static const struct attribute_group ft260_uart_chip_mode_0_2_3_attr_group = { + .attrs = (struct attribute *[]) { + &dev_attr_chip_mode.attr, + &dev_attr_pwren_status.attr, + &dev_attr_suspend_status.attr, + &dev_attr_power_saving_en.attr, + &dev_attr_i2c_enable.attr, + &dev_attr_gpio2_func.attr, + &dev_attr_gpioa_func.attr, + &dev_attr_gpiog_func.attr, + &dev_attr_uart_mode.attr, + &dev_attr_uart_dcd_ri.attr, + &dev_attr_clock_ctl.attr, + NULL + } +}; + static DEFINE_MUTEX(ft260_uart_list_lock); static LIST_HEAD(ft260_uart_device_list); @@ -2297,11 +2321,20 @@ static int ft260_i2c_probe(struct ft260_device *dev, if (ret) goto err_i2c_free; - ret = sysfs_create_group(&hdev->dev.kobj, &ft260_attr_group); + ret = sysfs_create_group(&hdev->dev.kobj, + &ft260_i2c_chip_mode_1_attr_group); if (ret < 0) { hid_err(hdev, "failed to create sysfs attrs\n"); goto err_gpio_remove; } + } else if (cfg->chip_mode == FT260_MODE_ALL || + cfg->chip_mode == FT260_MODE_BOTH) { + ret = sysfs_create_group(&hdev->dev.kobj, + &ft260_i2c_chip_mode_0_3_attr_group); + if (ret < 0) { + hid_err(hdev, "failed to create sysfs attrs\n"); + goto err_i2c_free; + } } return 0; @@ -2355,12 +2388,14 @@ static int ft260_uart_probe(struct ft260_device *dev, cfg->uart_mode = FT260_UART_CFG_FLOW_CTRL_NONE; if (dev->chip_mode & FT260_MODE_UART || - dev->chip_mode == FT260_MODE_ALL) { + dev->chip_mode == FT260_MODE_ALL || + dev->chip_mode == FT260_MODE_BOTH) { ret = ft260_gpio_init(dev, cfg); if (ret) goto err_hid_report; - ret = sysfs_create_group(&hdev->dev.kobj, &ft260_attr_group); + ret = sysfs_create_group(&hdev->dev.kobj, + &ft260_uart_chip_mode_0_2_3_attr_group); if (ret < 0) { hid_err(hdev, "failed to create sysfs attrs\n"); goto err_gpio_remove; @@ -2383,7 +2418,8 @@ static int ft260_uart_probe(struct ft260_device *dev, err_register_tty: if (dev->gc.parent) - sysfs_remove_group(&hdev->dev.kobj, &ft260_attr_group); + sysfs_remove_group(&hdev->dev.kobj, + &ft260_uart_chip_mode_0_2_3_attr_group); err_gpio_remove: if (dev->gc.parent) gpiochip_remove(&dev->gc); @@ -2499,11 +2535,18 @@ static void ft260_remove(struct hid_device *hdev) dev->removed = true; mutex_unlock(&dev->lock); if (dev->chip_mode & FT260_MODE_UART || - dev->chip_mode == FT260_MODE_ALL) - sysfs_remove_group(&hdev->dev.kobj, &ft260_attr_group); + dev->chip_mode == FT260_MODE_ALL || + dev->chip_mode == FT260_MODE_BOTH) + sysfs_remove_group(&hdev->dev.kobj, + &ft260_uart_chip_mode_0_2_3_attr_group); } else { if (dev->chip_mode == FT260_MODE_I2C) - sysfs_remove_group(&hdev->dev.kobj, &ft260_attr_group); + sysfs_remove_group(&hdev->dev.kobj, + &ft260_i2c_chip_mode_1_attr_group); + else if (dev->chip_mode == FT260_MODE_ALL || + dev->chip_mode == FT260_MODE_BOTH) + sysfs_remove_group(&hdev->dev.kobj, + &ft260_i2c_chip_mode_0_3_attr_group); i2c_del_adapter(&dev->adap); } -- 2.43.0