From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta0.migadu.com (out-235.mta0.migadu.com [91.218.175.235]) (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 6505759C99F for ; Tue, 8 Sep 2026 17:45:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.235 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788889507; cv=none; b=MR12qrWyG6wO2FDZIJ+OmzdZIFxeY/082H23qk7Ktcks8BcJIt4Pftx4XfeGuoSXRu0YuLe4AaX+amP/5Q1s10tVdgeQKelP/OGpB+pkAscBg1r4NncrU4nv1eS/6wbNQxgW90PnL/SZtdMFt+YQK3L+OlfK0iZM1s/nOGL2CHc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788889507; c=relaxed/simple; bh=zCK1HQrOJajDikqd5dBajq1MMMf+0R5mpv85011QOxc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YIzKdoBbKJQNoOW1OxYJXqiUTk8bRFAVUFhnrV/i/fEAcjxliIJBxvHftmg1v/fpojLf5BReRe0UBtnonRT9mMlniIs1GtIPEGbALD1fenXBQr5rCmnZNNsu1s+dX7y+833ZrWZLjIQ/TvXvtIzQCGDtN9CaM3YxJEUlHfqarzk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=Jj868Ruq; arc=none smtp.client-ip=91.218.175.235 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="Jj868Ruq" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=zCK1HQrOJajDikqd5dBajq1MMMf+0R5mpv85011QOxc=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1788889501; v=1; x=1789494301; b=Jj868Ruq49xcBXy/TuEkVNqZtfA0WQtquM1YnlXCXpmFCuDOOzeZn8CMGs3/Nrxc6gl0qqs/ 5ReTyFDy0cyfEXEvZAGl98L5K8vaH6NHcLeMItGeF7gpCDiZ64OTKZaLveHfypfONj2S3jFuuJ+ i7RW0fTf25wCtJCWEp7VB8mE= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id a72029a06fd6ac1e; Tue, 08 Sep 2026 17:45:00 +0000 X-Mizu-Trace-ID: a72029a06fd6ac1e X-Migadu-Flow: FLOW_OUT From: Denis Benato To: linux-kernel@vger.kernel.org Cc: linux-input@vger.kernel.org, "Benjamin Tissoires" , "Jiri Kosina" , "Luke D . Jones" , "Mateusz Schwartz" , "Denis Benato" , "Jonathan LoBue" , "Khamunetri Clark" , "Derek J. Clark" , Denis Benato Subject: [PATCH v6 08/13] HID: asus: add joysticks anti-deadzone configuration Date: Tue, 8 Sep 2026 17:44:28 +0000 Message-ID: <20260908174433.74260-9-denis.benato@linux.dev> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260908174433.74260-1-denis.benato@linux.dev> References: <20260908174433.74260-1-denis.benato@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit ROG Ally devices allow configuring the anti-deadzone parameter for the resistive joysticks devices as over time those develops drift, therefore allow userspace to configure the anti-deadzone by exposing relevant sysfs attributes. Assisted-by: opencode:glm-5.2 Signed-off-by: Denis Benato Signed-off-by: Luke Jones --- drivers/hid/hid-asus.c | 211 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 207 insertions(+), 4 deletions(-) diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c index 370205ae7fc5..4ed438121cc9 100644 --- a/drivers/hid/hid-asus.c +++ b/drivers/hid/hid-asus.c @@ -1333,6 +1333,193 @@ static struct device_attribute dev_attr_right_joystick_outer_threshold = static struct device_attribute dev_attr_right_joystick_outer_threshold_range = __ATTR(outer_threshold_range, 0444, right_joystick_outer_threshold_range_show, NULL); +/** + * ally_set_anti_deadzone() - Set anti-deadzone values for joysticks + * @ally: ally handheld structure + * @hdev: HID device + * @cfg: ally config + * @left_adz: left joystick anti-deadzone value (0-100) + * @right_adz: right joystick anti-deadzone value (0-100) + * + * Return: 0 on success, negative errno on failure + */ +static int ally_set_anti_deadzone(struct ally_handheld *ally, + struct hid_device *hdev, struct ally_config *cfg, + u8 left_adz, u8 right_adz) +{ + const u8 payload[] = { left_adz, right_adz }; + int ret; + + if (!cfg->anti_deadzone_support) { + hid_dbg(hdev, "Anti-deadzone not supported on this device\n"); + return -EOPNOTSUPP; + } + + u8 *buf __free(kfree) = ally_alloc_cmd(CMD_SET_ANTI_DEADZONE, payload, sizeof(payload)); + if (!buf) + return -ENOMEM; + + ret = ally_gamepad_send_packet(ally, hdev, buf, ROG_ALLY_REPORT_SIZE); + if (ret < 0) { + hid_err(hdev, "Failed to set anti-deadzone values: %d\n", ret); + return ret; + } + + return 0; +} + +static ssize_t left_joystick_anti_deadzone_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = to_hid_device(dev); + struct asus_drvdata *drvdata = hid_get_drvdata(hdev); + struct ally_handheld *const ally = drvdata->rog_ally; + struct ally_config *cfg; + + if (!ally) + return -ENODEV; + + cfg = ally_get_config(ally); + if (!cfg) + return -ENODEV; + + guard(mutex)(&cfg->config_mutex); + + if (!cfg->anti_deadzone_support) { + hid_dbg(hdev, "Anti-deadzone not supported on this device\n"); + return -EOPNOTSUPP; + } + + return sysfs_emit(buf, "%u\n", cfg->left_anti_deadzone); +} + +static ssize_t left_joystick_anti_deadzone_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hid_device *hdev = to_hid_device(dev); + struct asus_drvdata *drvdata = hid_get_drvdata(hdev); + struct ally_handheld *const ally = drvdata->rog_ally; + struct ally_config *cfg; + u8 value; + int ret; + + if (!ally) + return -ENODEV; + + cfg = ally_get_config(ally); + if (!cfg) + return -ENODEV; + + ret = kstrtou8(buf, 10, &value); + if (ret || value > 100) + return -EINVAL; + + guard(mutex)(&cfg->config_mutex); + + if (!cfg->anti_deadzone_support) { + hid_dbg(hdev, "Anti-deadzone not supported on this device\n"); + return -EOPNOTSUPP; + } + + ret = ally_set_anti_deadzone(ally, hdev, cfg, value, cfg->right_anti_deadzone); + if (ret) + return ret; + + cfg->left_anti_deadzone = value; + + return count; +} + +static ssize_t left_joystick_anti_deadzone_range_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sysfs_emit(buf, "0 100\n"); +} + +static ssize_t right_joystick_anti_deadzone_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hid_device *hdev = to_hid_device(dev); + struct asus_drvdata *drvdata = hid_get_drvdata(hdev); + struct ally_handheld *const ally = drvdata->rog_ally; + struct ally_config *cfg; + + if (!ally) + return -ENODEV; + + cfg = ally_get_config(ally); + if (!cfg) + return -ENODEV; + + guard(mutex)(&cfg->config_mutex); + + if (!cfg->anti_deadzone_support) { + hid_dbg(hdev, "Anti-deadzone not supported on this device\n"); + return -EOPNOTSUPP; + } + + return sysfs_emit(buf, "%u\n", cfg->right_anti_deadzone); +} + +static ssize_t right_joystick_anti_deadzone_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct hid_device *hdev = to_hid_device(dev); + struct asus_drvdata *drvdata = hid_get_drvdata(hdev); + struct ally_handheld *const ally = drvdata->rog_ally; + struct ally_config *cfg; + u8 value; + int ret; + + if (!ally) + return -ENODEV; + + cfg = ally_get_config(ally); + if (!cfg) + return -ENODEV; + + ret = kstrtou8(buf, 10, &value); + if (ret || value > 100) + return -EINVAL; + + guard(mutex)(&cfg->config_mutex); + + if (!cfg->anti_deadzone_support) { + hid_dbg(hdev, "Anti-deadzone not supported on this device\n"); + return -EOPNOTSUPP; + } + + ret = ally_set_anti_deadzone(ally, hdev, cfg, cfg->left_anti_deadzone, value); + if (ret) + return ret; + + cfg->right_anti_deadzone = value; + + return count; +} + +static ssize_t right_joystick_anti_deadzone_range_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sysfs_emit(buf, "0 100\n"); +} + +static struct device_attribute dev_attr_left_joystick_anti_deadzone = + __ATTR(anti_deadzone, 0644, left_joystick_anti_deadzone_show, + left_joystick_anti_deadzone_store); + +static struct device_attribute dev_attr_left_joystick_anti_deadzone_range = + __ATTR(anti_deadzone_range, 0444, left_joystick_anti_deadzone_range_show, NULL); + +static struct device_attribute dev_attr_right_joystick_anti_deadzone = + __ATTR(anti_deadzone, 0644, right_joystick_anti_deadzone_show, + right_joystick_anti_deadzone_store); + +static struct device_attribute dev_attr_right_joystick_anti_deadzone_range = + __ATTR(anti_deadzone_range, 0444, right_joystick_anti_deadzone_range_show, NULL); + /** * ally_set_trigger_ranges() - Generic function to set triggers ranges * @ally: ally handheld structure @@ -1698,6 +1885,8 @@ static struct attribute *left_joystick_axis_attrs[] = { &dev_attr_left_joystick_outer_threshold.attr, &dev_attr_left_joystick_inner_threshold_range.attr, &dev_attr_left_joystick_outer_threshold_range.attr, + &dev_attr_left_joystick_anti_deadzone.attr, + &dev_attr_left_joystick_anti_deadzone_range.attr, NULL }; @@ -1706,6 +1895,8 @@ static struct attribute *right_joystick_axis_attrs[] = { &dev_attr_right_joystick_outer_threshold.attr, &dev_attr_right_joystick_inner_threshold_range.attr, &dev_attr_right_joystick_outer_threshold_range.attr, + &dev_attr_right_joystick_anti_deadzone.attr, + &dev_attr_right_joystick_anti_deadzone_range.attr, NULL }; @@ -1837,8 +2028,11 @@ static struct ally_config *ally_config_create(struct hid_device *hdev, struct al } } - /* Skip the calibration groups when the capability is missing. */ - if (cfg->user_cal_support) { + /* + * Skip the calibration and anti-deadzone groups when none of the + * features they expose is supported. + */ + if (cfg->user_cal_support || cfg->anti_deadzone_support) { int cal_i; for (cal_i = 0; cal_i < ARRAY_SIZE(ally_cal_attr_groups); @@ -1892,8 +2086,7 @@ static void ally_config_remove(struct hid_device *hdev, struct ally_config *cfg) * create them, so a device without those capabilities does not * trigger a "not found" warning. */ - if (cfg->user_cal_support || cfg->anti_deadzone_support || - cfg->resp_curve_support) { + if (cfg->user_cal_support || cfg->anti_deadzone_support) { for (i = 0; i < ARRAY_SIZE(ally_cal_attr_groups); i++) sysfs_remove_group(&hdev->dev.kobj, ally_cal_attr_groups[i]); @@ -2218,6 +2411,16 @@ static int hid_asus_ally_init(struct hid_device *hdev, struct ally_handheld *all ret); } + if (cfg->anti_deadzone_support) { + ret = ally_set_anti_deadzone(ally, hdev, cfg, + cfg->left_anti_deadzone, + cfg->right_anti_deadzone); + if (ret < 0) + hid_warn(hdev, + "Failed to restore anti-deadzone: %d\n", + ret); + } + return 0; } -- 2.47.3