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Signed-off-by: David Lechner --- tools/counter/.gitignore | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/counter/.gitignore b/tools/counter/.gitignore index 9fd290d4bf439bd39a918371d00617d0bfb75d8a..22d8727d2696a875845cce05429= 45b3e416648d5 100644 --- a/tools/counter/.gitignore +++ b/tools/counter/.gitignore @@ -1,2 +1,3 @@ /counter_example +/counter_watch_events /include/linux/counter.h --=20 2.43.0 From nobody Mon Feb 9 03:52:12 2026 Received: from mail-oi1-f177.google.com (mail-oi1-f177.google.com [209.85.167.177]) (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 6DA1E79CF for ; Sat, 11 Jan 2025 00:22:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736554952; cv=none; b=O06pjdOOc6KbZ2QFhddBmPbz5itQP4fyCGDJOf3Gb0mCPvmMEaDe2luUTGu3tp3Wz6TWwgdIYnjWA8UYMXNColCqXTjMVuMUltPuBB7lv7WFgOz68B6/PLdb51Eyt7jpoznksMDec9yAUgznpT+n0GDO6071oN27qEGO/iMSNBo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736554952; c=relaxed/simple; bh=wvbzDL5AhiGelEihmC6YBvaJBEJ1CgebykByFmweYMU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WQ+8ruZwGAFnyhsqWGubEvI+J+ShqRgEITT47xWWsBLx5XJTKRGuBhzhucOKf4pH7vyDosxkF3Sy61DEOZ1rpQ/pzjmpwTck47aSjL8+xRgxtTC0kNe6A59TML8Q74+KyAuO86HXAp1riB4Sre7KXwRCNn33PTJF4ejAZ5sPzns= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=ptGPu3LS; arc=none smtp.client-ip=209.85.167.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="ptGPu3LS" Received: by mail-oi1-f177.google.com with SMTP id 5614622812f47-3eb6b16f1a0so755211b6e.3 for ; Fri, 10 Jan 2025 16:22:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1736554947; x=1737159747; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=NW8e0hxsXp+vQFvDPfQqx4iFekcjRNa9r51bkAvubqg=; b=ptGPu3LSkG/+ZmiGm+z1TrT/0lTu4Cp+zZ1VBrlEJd74Ycv4l76vK2VBq8IScZBizf yqlT4fA5mnVKwKXgkVFFjeGSy2COVtZLQoesTD50pIctGhecXNMk3xfrzdlan13O0rsj tBqTnvyLOv+QtXWZkvDqOHtjVWkxKq6opUK+hTLo4ALHMUNe6qVa+FTvNquf2N4+8gbY 8LoVHzBwBUz1zFljbuR/0hfLPYCLw1WaKNz0sWUs2PqOYIJC8PU+CnJ5EK+z6TGHYgzB 8q2Gpw1VMW3mDxDhcnxjouBE02ASqK3aNjvItsMkhhgR55fBEuIllSSsuvipJGPbCIRY 45Dw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736554947; x=1737159747; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=NW8e0hxsXp+vQFvDPfQqx4iFekcjRNa9r51bkAvubqg=; b=iLpcAJaX/nvIBxvUFNdYKXZMnNmq0lVspFpFPPQs5MkJkgQfPRSog7BmtDXCYTYGRp C//kClvfSSNMI8+VFcO1X3CU/WsHhlJLEZpsHYS0Nn6uVYPaEP/incyVAwdk1PsOVUKf DCZMEQihk2C5GPiE1ST0pAZo1kKwaJqsDg+PyjroFCSUvLVXp8pOekv1UHAk5roMHAk2 TjHRJeLfejv/hkPzJ9iCAA0QZgMMzVzL7Ks0yBT19BndiE3BonSps0WJkLEqv2frZRB7 wq/39mwImdUklGEKmf5q7BkV/WHshTKSrKDy8zeAjdlCUVKrIigNq2AaElxotf7Q+BLI 5IGQ== X-Forwarded-Encrypted: i=1; AJvYcCXuI7jpuRLxsAYcmPKpS4tDAySPqYBxf6oDP0hUL1+G7TqlyWyVW+m+A/noM0Hn3rrjamKrqHT4yO6D5Gk=@vger.kernel.org X-Gm-Message-State: AOJu0Yxa3G14esvV5XkzlYVhG255gSj2W5e+ZeoRY8YNKJGEbs/vsdoT me5HziaiMcH+sL8w9Defm6RFwdw8ZvnKKsmgxeciKdJl0Zswc7optujQO44uyA4= X-Gm-Gg: ASbGncvWRUtubZUSUYLQWWg8Gf6ePOkKJ/Ug9y2Ra+RkhNugjH0qN7xeiKFqbI8+qdU g8VedDoK3iSWQgAuA8EnTLsMacgzAZcfmGNs5whQ7l7w4+ifpEPYyvXuJzxWv2dtn8ZCu0Uy68H ndHfWOv1Emzs/wgCsXTa/j8pdaX9UPfkcjO29SAU/0XEkrurShtqo6K3oaYenArLunHqIUwASFH oPCHShdeZKjqfUwcwFJq7twSaLUoSn6S8EuSiLSo+D4ZlDqB3rCAUGr4pshNIpriR13kW526ThN 9YyAOaG3hEd5 X-Google-Smtp-Source: AGHT+IEoNoeWncNV9t+kRIbcV6xhg/XvZirmBilfvjPRkU868V7K9GDkUMtffvSsWmEZcUZoWo/hPQ== X-Received: by 2002:a05:6808:1996:b0:3e6:3a82:f790 with SMTP id 5614622812f47-3ef2ebcb1c6mr7727253b6e.6.1736554947325; Fri, 10 Jan 2025 16:22:27 -0800 (PST) Received: from [127.0.1.1] (ip98-183-112-25.ok.ok.cox.net. [98.183.112.25]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-723186280easm1228941a34.59.2025.01.10.16.22.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jan 2025 16:22:26 -0800 (PST) From: David Lechner Date: Fri, 10 Jan 2025 18:22:05 -0600 Subject: [PATCH v2 2/4] counter: add direction change event Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250110-counter-ti-eqep-add-direction-support-v2-2-c6b6f96d2db9@baylibre.com> References: <20250110-counter-ti-eqep-add-direction-support-v2-0-c6b6f96d2db9@baylibre.com> In-Reply-To: <20250110-counter-ti-eqep-add-direction-support-v2-0-c6b6f96d2db9@baylibre.com> To: William Breathitt Gray , Fabrice Gasnier Cc: Judith Mendez , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, David Lechner X-Mailer: b4 0.14.2 Add COUNTER_EVENT_DIRECTION_CHANGE to be used by drivers to emit events when a counter detects a change in direction. Signed-off-by: David Lechner --- include/uapi/linux/counter.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/uapi/linux/counter.h b/include/uapi/linux/counter.h index 008a691c254bdb49b9c922d7591e755e82b38a84..350b45d616bb102c16f8b60e903= 9272db20d1be9 100644 --- a/include/uapi/linux/counter.h +++ b/include/uapi/linux/counter.h @@ -65,6 +65,8 @@ enum counter_event_type { COUNTER_EVENT_CHANGE_OF_STATE, /* Count value captured */ COUNTER_EVENT_CAPTURE, + /* Direction change detected */ + COUNTER_EVENT_DIRECTION_CHANGE, }; =20 /** --=20 2.43.0 From nobody Mon Feb 9 03:52:12 2026 Received: from mail-ot1-f48.google.com (mail-ot1-f48.google.com [209.85.210.48]) (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 E840D2033A for ; Sat, 11 Jan 2025 00:22:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.48 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736554953; cv=none; b=CkURgYz30udnrmPmNNX1+FxBPAGcYhCSBPuRnhJsT/bAPORqtb/OI+9JLs2lnqIRaTvu0bJW8ZAlRjCuVNBJnLga2C20A/wYaWCYoGhtFvy+z4Le6l9+s1BtOCNyccPmKGFX0otqirqqcRB70Z581BW4Ph7Z7LYo4fS2TbUxdDQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736554953; c=relaxed/simple; bh=9xM1O3PFOmAJu4AafJvQ521D7CpKL5YLHrLmCJg4Zt4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jgWkuvOULu86e7a+GLTvLGd6fOJjVQq7SBvFMeCD+3rQzZoygvad+pJUAsqPC5VgzEHoQTh7knEeXpqHvw9A6dQ1GeNsssQryvUbc4OBGrRVWcuQhDsSXHBpfQmIiut/J7q6H85MSP1CPWEJFfTdzHHnwVGsthrjkA9bMV9FyG4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=1rvw2QAG; arc=none smtp.client-ip=209.85.210.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="1rvw2QAG" Received: by mail-ot1-f48.google.com with SMTP id 46e09a7af769-71e2a32297dso1243315a34.0 for ; Fri, 10 Jan 2025 16:22:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1736554950; x=1737159750; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=jhqKWXhW3hFzYZziQPv1bc807P1AVczWs3LFNPTX0uc=; b=1rvw2QAG8CY5VoZ6oPWEYExYJdbcYcWlhXNGo8BQ5Y4kg9OzuDpmU9rgISZyh3P1qp jrSDa0RA4YVfCHg1NkjI9L6bVTbIxNjqTyYW+KA3VdBL+Xexw3eLIq28jO5k4Om4IuJF nuLDf7eHWCipFJY0xShJMlwDEZImRtRbxVMCvX+wOUZ5DevnF9qMIA+YsvgJq3B+oBiV /ipO6L0Ao++rTDFRztf495bC7V4wIZDlX7T9GPGk9mzkJfIB9nmclYSymb4Ky4ZaZwe2 aFFnYJdOra5Nsq8vaVzfqxIwXOJN1gy556ykALiv4ozZChS05M1ozkcBNJA0ZHmh4hwC /XnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736554950; x=1737159750; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jhqKWXhW3hFzYZziQPv1bc807P1AVczWs3LFNPTX0uc=; b=DM+9UXE15n7ejR+4wouZSkDxrqpehNzDs+lST2PhLPdZ1dsRCpGGhZiC7i0bGuEU3F ojzc3E8WoteKAbKyZZfKdU+d3xMJ70Oyo4zY8B9Yf3PzbszcuOZP1flc9f8DyC8PHXJJ o07NzyCBeeRSmUp4FJ1SUNSh4Tds+uT0+VWIMTXvxbA0XSPEiAWA5Mtzgp79jC5AwAmn e4K1tF9Q0K8Phn4BOtCOdER4Lxgfq6EVmXwDUkvpb4IMDQdVE+oqj5dSO7BOy1oa0waX 27GxkNFOgaibbj0w9Gw/f5uVnAyIu41V48FT3YErCg/Kgvx3irhGdFViIF99J3ZZ1lZE OOVw== X-Forwarded-Encrypted: i=1; AJvYcCXmwfYTsRP2uAK5iWE5Hn7wcn/fSCIGCRuKeR2aTEZySw8giu+iekNKAtMRISRwelE/dBhb+p5YugFp+RQ=@vger.kernel.org X-Gm-Message-State: AOJu0YyQkieDiqOX7hIzZ8/kn6l2PLcyIkO0D5+ClHLcEzXQ8KGFWzzj Pf0VEGLNVQ6xukOdyHnGu89VBgaNpjJ1C4geZb5p/IcEdOt9G9/0YaOJMQETZrA= X-Gm-Gg: ASbGncthmoo2z99cElkIxUn6orXOMsmgFzPRdos500eDhhbj1fUVlewBT35IYwyHOFu sZN15jFp6Xvp7ip4absQaH9EWaDHBLcJHIqOoX0rZTK3JbskXREFQB2DcUQkc7dFAX9s4VDpbTM AdMDOGpz5ecH+g0OtN5T5ohBgubZdUxAZ0KFwhWPUr6wPCXi55cgZ8Lc1o3EFQDtPDtPmeiuZXM W58HnQ6GQNdr93rtIer6TpRqxltxtIbA7mHDvEc9TJEAd1AXujzgJteQTnK+1ntWiu2vYv2TQdd 8q6cpH1u8v+i X-Google-Smtp-Source: AGHT+IFPOIw0fqjJHlxoL7+RAYiJ65vO0ScrJRgmr4AC4BGEAX0MS8GdoHgfQhYbeLUIlQL41y7MGQ== X-Received: by 2002:a05:6830:4412:b0:70f:7375:e2b5 with SMTP id 46e09a7af769-723187a6aa7mr3323327a34.6.1736554949928; Fri, 10 Jan 2025 16:22:29 -0800 (PST) Received: from [127.0.1.1] (ip98-183-112-25.ok.ok.cox.net. 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Signed-off-by: David Lechner --- tools/counter/counter_watch_events.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/counter/counter_watch_events.c b/tools/counter/counter_w= atch_events.c index 107631e0f2e315ae66f2150c0e7c1e1bc9a026fc..15e21b0c5ffd71f87c0fbe473e5= 5598c1fb41ff3 100644 --- a/tools/counter/counter_watch_events.c +++ b/tools/counter/counter_watch_events.c @@ -38,6 +38,7 @@ static const char * const counter_event_type_name[] =3D { "COUNTER_EVENT_INDEX", "COUNTER_EVENT_CHANGE_OF_STATE", "COUNTER_EVENT_CAPTURE", + "COUNTER_EVENT_DIRECTION_CHANGE", }; =20 static const char * const counter_component_type_name[] =3D { @@ -118,6 +119,7 @@ static void print_usage(void) " evt_index (COUNTER_EVENT_INDEX)\n" " evt_change_of_state (COUNTER_EVENT_CHANGE_OF_STATE)\n" " evt_capture (COUNTER_EVENT_CAPTURE)\n" + " evt_direction_change (COUNTER_EVENT_DIRECTION_CHANGE)\n" "\n" " chan=3D channel for this watch [default: 0]\= n" " id=3D component id for this watch [default= : 0]\n" @@ -157,6 +159,7 @@ enum { WATCH_EVENT_INDEX, WATCH_EVENT_CHANGE_OF_STATE, WATCH_EVENT_CAPTURE, + WATCH_EVENT_DIRECTION_CHANGE, WATCH_CHANNEL, WATCH_ID, WATCH_PARENT, @@ -183,6 +186,7 @@ static char * const counter_watch_subopts[WATCH_SUBOPTS= _MAX + 1] =3D { [WATCH_EVENT_INDEX] =3D "evt_index", [WATCH_EVENT_CHANGE_OF_STATE] =3D "evt_change_of_state", [WATCH_EVENT_CAPTURE] =3D "evt_capture", + [WATCH_EVENT_DIRECTION_CHANGE] =3D "evt_direction_change", /* channel, id, parent */ [WATCH_CHANNEL] =3D "chan", [WATCH_ID] =3D "id", @@ -278,6 +282,7 @@ int main(int argc, char **argv) case WATCH_EVENT_INDEX: case WATCH_EVENT_CHANGE_OF_STATE: case WATCH_EVENT_CAPTURE: + case WATCH_EVENT_DIRECTION_CHANGE: /* match counter_event_type: subtract enum value */ ret -=3D WATCH_EVENT_OVERFLOW; 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[98.183.112.25]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-723186280easm1228941a34.59.2025.01.10.16.22.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jan 2025 16:22:31 -0800 (PST) From: David Lechner Date: Fri, 10 Jan 2025 18:22:07 -0600 Subject: [PATCH v2 4/4] counter: ti-eqep: add direction support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250110-counter-ti-eqep-add-direction-support-v2-4-c6b6f96d2db9@baylibre.com> References: <20250110-counter-ti-eqep-add-direction-support-v2-0-c6b6f96d2db9@baylibre.com> In-Reply-To: <20250110-counter-ti-eqep-add-direction-support-v2-0-c6b6f96d2db9@baylibre.com> To: William Breathitt Gray , Fabrice Gasnier Cc: Judith Mendez , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, David Lechner X-Mailer: b4 0.14.2 Add support for reading the direction and for emitting direction change events to the ti-eqep counter driver. Signed-off-by: David Lechner --- drivers/counter/ti-eqep.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/counter/ti-eqep.c b/drivers/counter/ti-eqep.c index bc586eff0daeb52857c10fc89e4f9c0262c3441b..d21c157e531a614215b50f2271f= 18c998413a572 100644 --- a/drivers/counter/ti-eqep.c +++ b/drivers/counter/ti-eqep.c @@ -107,6 +107,15 @@ #define QCLR_PCE BIT(1) #define QCLR_INT BIT(0) =20 +#define QEPSTS_UPEVNT BIT(7) +#define QEPSTS_FDF BIT(6) +#define QEPSTS_QDF BIT(5) +#define QEPSTS_QDLF BIT(4) +#define QEPSTS_COEF BIT(3) +#define QEPSTS_CDEF BIT(2) +#define QEPSTS_FIMF BIT(1) +#define QEPSTS_PCEF BIT(0) + /* EQEP Inputs */ enum { TI_EQEP_SIGNAL_QEPA, /* QEPA/XCLK */ @@ -286,6 +295,9 @@ static int ti_eqep_events_configure(struct counter_devi= ce *counter) case COUNTER_EVENT_UNDERFLOW: qeint |=3D QEINT_PCU; break; + case COUNTER_EVENT_DIRECTION_CHANGE: + qeint |=3D QEINT_QDC; + break; } } =20 @@ -298,6 +310,7 @@ static int ti_eqep_watch_validate(struct counter_device= *counter, switch (watch->event) { case COUNTER_EVENT_OVERFLOW: case COUNTER_EVENT_UNDERFLOW: + case COUNTER_EVENT_DIRECTION_CHANGE: if (watch->channel !=3D 0) return -EINVAL; =20 @@ -368,11 +381,27 @@ static int ti_eqep_position_enable_write(struct count= er_device *counter, return 0; } =20 +static int ti_eqep_direction_read(struct counter_device *counter, + struct counter_count *count, + enum counter_count_direction *direction) +{ + struct ti_eqep_cnt *priv =3D counter_priv(counter); + u32 qepsts; + + regmap_read(priv->regmap16, QEPSTS, &qepsts); + + *direction =3D (qepsts & QEPSTS_QDF) ? COUNTER_COUNT_DIRECTION_FORWARD + : COUNTER_COUNT_DIRECTION_BACKWARD; + + return 0; +} + static struct counter_comp ti_eqep_position_ext[] =3D { COUNTER_COMP_CEILING(ti_eqep_position_ceiling_read, ti_eqep_position_ceiling_write), COUNTER_COMP_ENABLE(ti_eqep_position_enable_read, ti_eqep_position_enable_write), + COUNTER_COMP_DIRECTION(ti_eqep_direction_read), }; =20 static struct counter_signal ti_eqep_signals[] =3D { @@ -439,6 +468,9 @@ static irqreturn_t ti_eqep_irq_handler(int irq, void *d= ev_id) if (qflg & QFLG_PCU) counter_push_event(counter, COUNTER_EVENT_UNDERFLOW, 0); =20 + if (qflg & QFLG_QDC) + counter_push_event(counter, COUNTER_EVENT_DIRECTION_CHANGE, 0); + regmap_write(priv->regmap16, QCLR, qflg); =20 return IRQ_HANDLED; --=20 2.43.0