From nobody Sun Apr 12 14:36:18 2026 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 620523D75CB; Wed, 8 Apr 2026 17:50:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775670631; cv=pass; b=uwYsg5drdIz5K8EP+aAnkwQ2wfLjJgjtZDCjmYwfc5FRh24ygx+wLO6gI4UD12Yj1yQyb4IMrsU5nFnODpsb1xqUb0TxW3DdGlSlzi8FLnrTxKYTBNwfH2Ln1M1F3U4Xev6hoFLL8vmhTiW3rr9+Yemqlo+useC2mQTDUR2Ufak= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775670631; c=relaxed/simple; bh=wY8RgB9/IerJvvQhaknNyjjb0ZkJTWqfHiwu8j51bj4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=QpcsPiMeyJEJv2RIY8FI4kNqgNdrfUeIBtrOv5knRucRuAk0zjwR75yoX2hr7KwmowNLc7Wy5HCQ1KNmW5T5iLbZ6780rxnUhrHIRvIPcy5WLH4FM6XAInrPCAuZQq9DUak3k+MZV7knmCYr38nTYADnFFi0Kozm177v9tyVUDE= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b=Qcjw+u42; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="Qcjw+u42" ARC-Seal: i=1; a=rsa-sha256; t=1775670612; cv=none; d=zohomail.com; s=zohoarc; b=msnMU6CtuMwia0pzGds7EVTUmiREFufzlTqP92bc1iinCX8D1HJDXRWTWqyjPmO01hqIHdSPxI9zyFxK8XMDvEtjbiz5TN3ZV34xSFkV+PtaE5fP4S6ZD3xjMydM99gDcqDqlwl9UqsvcUzKnaT+1NRfB4Fsa2B3tn6tBZ/KLJE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1775670612; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=7V/o+SJsmu7dHHUNuEvEIYQZFByWX+W5rNEJiWbh4qg=; b=IaSO8ags8oTXENKUZEepG9ofqYW5NFDpIuOtkRhYjy8fRO00mWeiOZHodbFcHFIkfr9A5DwkCifWtPNBXftZZFlfC1yZrH6ZQo8cSjXkdFqheDOIm3E/PKQv4Qz6ATC/SEYOicbEMomgdAGXV4u77z7IjsbaNsVd+ouRjPXORvo= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1775670612; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:References:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=7V/o+SJsmu7dHHUNuEvEIYQZFByWX+W5rNEJiWbh4qg=; b=Qcjw+u42vq0YiwAHbg1DgGITUjNikXNkWV+Sef07sDPKc20tz5E9xsxvpm0cxoxp LZm9t3vTtfuMLLKk4J2f0a8aVXvxE1Ippe/fgAwh565KjPLwh3CPRojbjD246vSSXa/ 06KpfohEC/CV3vhqPgjMcjB+fD5m6N/HJUeNb18w= Received: by mx.zohomail.com with SMTPS id 17756706102001005.8838527087476; Wed, 8 Apr 2026 10:50:10 -0700 (PDT) From: Nicolas Frattaroli Date: Wed, 08 Apr 2026 19:49:40 +0200 Subject: [PATCH v3 2/4] Input: adc-keys - support EV_SW as well, not just EV_KEY. 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: <20260408-rock4d-audio-v3-2-49e43c3c2a68@collabora.com> References: <20260408-rock4d-audio-v3-0-49e43c3c2a68@collabora.com> In-Reply-To: <20260408-rock4d-audio-v3-0-49e43c3c2a68@collabora.com> To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alexandre Belloni , Heiko Stuebner Cc: kernel@collabora.com, linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, Nicolas Frattaroli X-Mailer: b4 0.15.1 Instead of doing something like what gpio-keys is doing, adc-keys hardcodes that all keycodes must be of type EV_KEY. This limits the usefulness of adc-keys, and overcomplicates the code with manual bit-setting logic. Instead, refactor the code to read the linux,input-type fwnode property, and get rid of the custom bit setting logic, replacing it with input_set_capability instead. input_report_key is replaced with input_event, which allows us to explicitly pass the type. Only EV_KEY and EV_SW is allowed at this stage. Reviewed-by: Alexandre Belloni Signed-off-by: Nicolas Frattaroli --- drivers/input/keyboard/adc-keys.c | 37 +++++++++++++++++++++++++----------= -- 1 file changed, 25 insertions(+), 12 deletions(-) diff --git a/drivers/input/keyboard/adc-keys.c b/drivers/input/keyboard/adc= -keys.c index f1753207429d..62376f34f7d0 100644 --- a/drivers/input/keyboard/adc-keys.c +++ b/drivers/input/keyboard/adc-keys.c @@ -18,13 +18,15 @@ =20 struct adc_keys_button { u32 voltage; - u32 keycode; + u32 code; + u32 type; }; =20 struct adc_keys_state { struct iio_channel *channel; u32 num_keys; u32 last_key; + u32 last_type; u32 keyup_voltage; const struct adc_keys_button *map; }; @@ -34,7 +36,8 @@ static void adc_keys_poll(struct input_dev *input) struct adc_keys_state *st =3D input_get_drvdata(input); int i, value, ret; u32 diff, closest =3D 0xffffffff; - int keycode =3D 0; + u32 code =3D 0; + u32 type =3D EV_KEY; =20 ret =3D iio_read_channel_processed(st->channel, &value); if (unlikely(ret < 0)) { @@ -45,22 +48,24 @@ static void adc_keys_poll(struct input_dev *input) diff =3D abs(st->map[i].voltage - value); if (diff < closest) { closest =3D diff; - keycode =3D st->map[i].keycode; + code =3D st->map[i].code; + type =3D st->map[i].type; } } } =20 if (abs(st->keyup_voltage - value) < closest) - keycode =3D 0; + code =3D 0; =20 - if (st->last_key && st->last_key !=3D keycode) - input_report_key(input, st->last_key, 0); + if (st->last_key && st->last_key !=3D code) + input_event(input, st->last_type, st->last_key, 0); =20 - if (keycode) - input_report_key(input, keycode, 1); + if (code) + input_event(input, type, code, 1); =20 input_sync(input); - st->last_key =3D keycode; + st->last_key =3D code; + st->last_type =3D type; } =20 static int adc_keys_load_keymap(struct device *dev, struct adc_keys_state = *st) @@ -88,11 +93,20 @@ static int adc_keys_load_keymap(struct device *dev, str= uct adc_keys_state *st) map[i].voltage /=3D 1000; =20 if (fwnode_property_read_u32(child, "linux,code", - &map[i].keycode)) { + &map[i].code)) { dev_err(dev, "Key with invalid or missing linux,code\n"); return -EINVAL; } =20 + if (fwnode_property_read_u32(child, "linux,input-type", + &map[i].type)) + map[i].type =3D EV_KEY; + + if (map[i].type !=3D EV_KEY && map[i].type !=3D EV_SW) + return dev_err_probe(dev, -EINVAL, + "Invalid linux,input-type: 0x%x\n", + map[i].type); + i++; } =20 @@ -156,9 +170,8 @@ static int adc_keys_probe(struct platform_device *pdev) input->id.product =3D 0x0001; input->id.version =3D 0x0100; =20 - __set_bit(EV_KEY, input->evbit); for (i =3D 0; i < st->num_keys; i++) - __set_bit(st->map[i].keycode, input->keybit); + input_set_capability(input, st->map[i].type, st->map[i].code); =20 if (device_property_read_bool(dev, "autorepeat")) __set_bit(EV_REP, input->evbit); --=20 2.53.0