From nobody Sun Oct 5 14:10:53 2025 Received: from mail-il1-f201.google.com (mail-il1-f201.google.com [209.85.166.201]) (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 815622749D6 for ; Mon, 4 Aug 2025 14:11:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754316692; cv=none; b=Y3oFA6NGnNrnZ2Y7HoSKmnBi/Hb+mAZAYTWix3zMHPmgf3qTPO4oeJ5eD+xvW94F2Qak4ZMSW6kxy3z3WsZDM6a6NUl3YEKEpVeyi/O8/yuaZn365tEX9VdYrVHP4PlONOcfc7LFICfbYefS/1ok7ENgXz22qOQk3Kc4cubFse8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754316692; c=relaxed/simple; bh=6v1MDR/WeMRI65XnJPJkUWNJ4hrJ+LCwOhgu42qcMno=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=r28ZqMV6FubYRuCHYeV6ALOHbMa4r1hXbXuDtN3WqbM5KEg5G9xsXjhd4+wxOVYo3gfnWMcp0OahEVcLCoN4ysaCNSCP/V8JnQg8kcReaPE4JTLSkEAmoyI6l3UuuYT0nxPpvHAVH4QYl5B56g/94psX3nQNmwt9+oOxpUYaGr8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jdenose.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=JJyaFl1+; arc=none smtp.client-ip=209.85.166.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jdenose.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="JJyaFl1+" Received: by mail-il1-f201.google.com with SMTP id e9e14a558f8ab-3e3eec010b9so37721685ab.0 for ; Mon, 04 Aug 2025 07:11:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1754316689; x=1754921489; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=7/dNH3FeYrRLFNsE8lPl3SAjeZ5ud/QO8Uhx48+1mZI=; b=JJyaFl1+Mo+E5n927qWPuosXKPmHvJc5zvY+4/FrHI0fSDxHoYSp1szHFLUXcFz9Sp HWwdidEJeR7YrgUC++XPnubPlqcpHEuoAU8HKimAk7g+ivF4PfLl03OKvNX6KuBUAAKr cv8hVifv/R6nVw+vcCmRmaOk15cq0umVF/xs/htwF1aal5V/3vQMaJFyacLd1cL2+O11 OjUiXTIX+3xNzIzulTTyA7h49aodFQgLtk24kjLADT3KNSa0mHSPC88ynP035E1l+xm+ R4dJmFuGk3XQRGvac0o8+PpGRL7EzvMCT9/cbxE2a+BiX9B8Z0/6CSre7tksBI5KZrVS 4NkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754316689; x=1754921489; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=7/dNH3FeYrRLFNsE8lPl3SAjeZ5ud/QO8Uhx48+1mZI=; b=DoK0BX/j3/PoNUYxDCXB9f9guH/a5CI0z6rGHq2kB6dDv7Y9XEmk/BBO1/tOX+xTB4 gdnw9Oz/KT1LU7pSeLN5fDXG52eUnWEtLV0S31y2Dq5MvYBffHlSQRCwjEUbLDzF5ok7 TGm3pEVx/x8ePtgKg4gNf0lSXqrlN2wdfr5yYHacQrsTBuoozjtlj7kWP71Bo1MR0+2c HDSBQHIeiArckrQBU2YysL4gIE71TxIUzybvZNwNMcFiPv2cBinyE0NpBAsJWnjOgsnS 5wX3KJ9xrl7BSOBeUq6x8m5uwLEabiqSIW5gDGh1TPOYVz+6VepVgwUMTBVA07V9yvbr ASZQ== X-Forwarded-Encrypted: i=1; AJvYcCVNAQHnOPR3IDDPHW1hDXZ79jPlbNKMYm9RanySYAbh7/S+hPweJsVaD1JKpbEVfIDJQ6QBwHPptwSx8Hg=@vger.kernel.org X-Gm-Message-State: AOJu0YwXRhpCKpiWysPDrWxCG1fKEN+cHSJBoYrgP6lTFbg/jYJA0Ogd Sn0yot0WxbkcZmZUjAsB1V0wxYN5yrChYghn7jd3nnfeycCvO4Mdqr8BP7YfmKsnN0Ev8IlNEqC M1IirvWfpag== X-Google-Smtp-Source: AGHT+IE8yJlfGzFt7kta7CCrdssICXTjwzesMzB/FE3Qthy/07S1VLf94JQvmiEXmGBs2sypLXnXQz80YiR6 X-Received: from ilbbm16.prod.google.com ([2002:a05:6e02:3310:b0:3e4:c74:f9f2]) (user=jdenose job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6e02:3007:b0:3e3:d149:8bea with SMTP id e9e14a558f8ab-3e4162bc7e9mr164931645ab.1.1754316689640; Mon, 04 Aug 2025 07:11:29 -0700 (PDT) Date: Mon, 04 Aug 2025 14:11:25 +0000 In-Reply-To: <20250804-support-forcepads-v2-0-138ca980261d@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250804-support-forcepads-v2-0-138ca980261d@google.com> X-Mailer: b4 0.14.2 Message-ID: <20250804-support-forcepads-v2-10-138ca980261d@google.com> Subject: [PATCH v2 10/11] HID: haptic: add hid_haptic_switch_mode From: Jonathan Denose To: Jiri Kosina , Benjamin Tissoires , Dmitry Torokhov , Jonathan Corbet , Henrik Rydberg Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Angela Czubak , "Sean O'Brien" , Jonathan Denose Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Angela Czubak Function hid_haptic_switch_mode() can be used to switch between device-controlled mode and host-controlled mode. Uploading a WAVEFORMPRESS or WAVEFORMRELEASE effect triggers host-controlled mode if the device is in device-controlled mode. Signed-off-by: Angela Czubak Co-developed-by: Jonathan Denose Signed-off-by: Jonathan Denose --- drivers/hid/hid-haptic.c | 66 +++++++++++++++++++++++++++++++++++++++++++-= ---- 1 file changed, 59 insertions(+), 7 deletions(-) diff --git a/drivers/hid/hid-haptic.c b/drivers/hid/hid-haptic.c index 760dd1d70583489c07e199943ebba361d347bfa4..e83363cad6febb5d3fcd786b76e= 05bc16a7e4e94 100644 --- a/drivers/hid/hid-haptic.c +++ b/drivers/hid/hid-haptic.c @@ -5,6 +5,7 @@ * Copyright (c) 2021 Angela Czubak */ =20 +#include #include =20 #include "hid-haptic.h" @@ -197,12 +198,46 @@ static void fill_effect_buf(struct hid_haptic_device = *haptic, mutex_unlock(&haptic->manual_trigger_mutex); } =20 +static void switch_mode(struct hid_device *hdev, struct hid_haptic_device = *haptic, + int mode) +{ + struct hid_report *rep =3D haptic->auto_trigger_report; + struct hid_field *field; + s32 value; + int i, j; + + if (mode =3D=3D HID_HAPTIC_MODE_HOST) + value =3D HID_HAPTIC_ORDINAL_WAVEFORMSTOP; + else + value =3D haptic->default_auto_trigger; + + mutex_lock(&haptic->auto_trigger_mutex); + for (i =3D 0; i < rep->maxfield; i++) { + field =3D rep->field[i]; + /* Ignore if report count is out of bounds. */ + if (field->report_count < 1) + continue; + + for (j =3D 0; j < field->maxusage; j++) { + if (field->usage[j].hid =3D=3D HID_HP_AUTOTRIGGER) + field->value[j] =3D value; + } + } + + /* send the report */ + hid_hw_request(hdev, rep, HID_REQ_SET_REPORT); + mutex_unlock(&haptic->auto_trigger_mutex); + haptic->mode =3D mode; +} + static int hid_haptic_upload_effect(struct input_dev *dev, struct ff_effec= t *effect, struct ff_effect *old) { + struct hid_device *hdev =3D input_get_drvdata(dev); struct ff_device *ff =3D dev->ff; struct hid_haptic_device *haptic =3D ff->private; int i, ordinal =3D 0; + bool switch_modes =3D false; =20 /* If vendor range, check vendor id and page */ if (effect->u.hid.hid_usage >=3D (HID_HP_VENDORWAVEFORMMIN & HID_USAGE) && @@ -225,6 +260,16 @@ static int hid_haptic_upload_effect(struct input_dev *= dev, struct ff_effect *eff fill_effect_buf(haptic, &effect->u.hid, &haptic->effect[effect->id], ordinal); =20 + if (effect->u.hid.hid_usage =3D=3D (HID_HP_WAVEFORMPRESS & HID_USAGE) || + effect->u.hid.hid_usage =3D=3D (HID_HP_WAVEFORMRELEASE & HID_USAGE)) + switch_modes =3D true; + + /* If device is in autonomous mode, and the uploaded effect signals users= pace + * wants control of the device, change modes + */ + if (switch_modes && haptic->mode =3D=3D HID_HAPTIC_MODE_DEVICE) + switch_mode(hdev, haptic, HID_HAPTIC_MODE_HOST); + return 0; } =20 @@ -290,6 +335,7 @@ static void effect_set_default(struct ff_effect *effect) static int hid_haptic_erase(struct input_dev *dev, int effect_id) { struct hid_haptic_device *haptic =3D dev->ff->private; + struct hid_device *hdev =3D input_get_drvdata(dev); struct ff_effect effect; int ordinal; =20 @@ -297,20 +343,25 @@ static int hid_haptic_erase(struct input_dev *dev, in= t effect_id) =20 if (effect.u.hid.hid_usage =3D=3D (HID_HP_WAVEFORMRELEASE & HID_USAGE)) { ordinal =3D haptic->release_ordinal; - if (!ordinal) + if (!ordinal) { ordinal =3D HID_HAPTIC_ORDINAL_WAVEFORMNONE; - else - effect.u.hid.hid_usage =3D HID_HP_WAVEFORMRELEASE & - HID_USAGE; + if (haptic->mode =3D=3D HID_HAPTIC_MODE_HOST) + switch_mode(hdev, haptic, HID_HAPTIC_MODE_DEVICE); + } else { + effect.u.hid.hid_usage =3D HID_HP_WAVEFORMRELEASE & HID_USAGE; + } fill_effect_buf(haptic, &effect.u.hid, &haptic->effect[effect_id], ordinal); } else if (effect.u.hid.hid_usage =3D=3D (HID_HP_WAVEFORMPRESS & HID_USAG= E)) { ordinal =3D haptic->press_ordinal; - if (!ordinal) + if (!ordinal) { ordinal =3D HID_HAPTIC_ORDINAL_WAVEFORMNONE; + if (haptic->mode =3D=3D HID_HAPTIC_MODE_HOST) + switch_mode(hdev, haptic, HID_HAPTIC_MODE_DEVICE); + } else - effect.u.hid.hid_usage =3D HID_HP_WAVEFORMPRESS & - HID_USAGE; + effect.u.hid.hid_usage =3D HID_HP_WAVEFORMPRESS & HID_USAGE; + fill_effect_buf(haptic, &effect.u.hid, &haptic->effect[effect_id], ordinal); } @@ -392,6 +443,7 @@ int hid_haptic_init(struct hid_device *hdev, haptic->hid_usage_map[HID_HAPTIC_ORDINAL_WAVEFORMSTOP] =3D HID_HP_WAVEFORMSTOP & HID_USAGE; =20 + mutex_init(&haptic->auto_trigger_mutex); for (r =3D 0; r < haptic->auto_trigger_report->maxfield; r++) parse_auto_trigger_field(haptic, haptic->auto_trigger_report->field[r]); =20 --=20 2.50.1.565.gc32cd1483b-goog