From patchwork Wed Feb 28 22:04:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jameson Thies X-Patchwork-Id: 777380 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (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 E03231361B0 for ; Wed, 28 Feb 2024 22:04:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709157849; cv=none; b=uxbya3/KRbQ4jAwZqyVV/+vSBGj5kIdKCcDoNCRUNg+Uj3aN1ewkxugX2wRrVBgXJ0OBvp0MQq9QmkWk/SoaUbMfJYufGdqKR8Phad2n9Fde0nxVUUxf+fvRtuGv9KSwc7w/xbJgQGELk4QjneeGtoLn5xM99J8wMH50EydD8xA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709157849; c=relaxed/simple; bh=Ck20RD7SWLmT3wN/hjyZSTuoMvNa2KJPDTQ2bpCa8rU=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=IBPNta+yXDz9zmM4x3pe6HtPmuYGmRCKHyl0ukI6srwg1wi2cSQnAahDnzcVPjaYJLkIhUDqsATuo1WRENweDfzrGPEtKzN4JIWmz35QWmcolRqhfYBw5WMAuy5ZwK87bur5Fw+uANNqDbOZ69362l6O8b0o6uBveY/rnvmcJQA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=EdIfd3dW; arc=none smtp.client-ip=209.85.219.202 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--jthies.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="EdIfd3dW" Received: by mail-yb1-f202.google.com with SMTP id 3f1490d57ef6-d9a541b720aso517040276.0 for ; Wed, 28 Feb 2024 14:04:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709157846; x=1709762646; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=jb2gwN6bxiLt3LtO6maFpO1+dlXHorrZhIAqEy+dyf0=; b=EdIfd3dWgZ+phOaF12ToGLCveiEDgRPqBtkW1VAVQpFh+v7MRCW/9e2ePDD6Qi3uZG o8CLvN5p0LP/DBMyyeHKFjkyK45rEhN3k0IJWa0E2IjDaq2U00krCVzAnqUHSG8kN5cD Gisuau13EutHypOu7zGPTYgESX/HWHSoCaiWOdxn6NIvuvncTyn1CoONAfjxnlHiWkDp j6CGfC0jM8dNrV/0TcHwnaH1LtnZEC1TRJMxonedv7ThC95r1PcOrepnbIf83OKWzkgG joS4XMVIYP2Kv52/NoUQ64DpcWhrnElhCxRmi4/oFal5kbwm0jTsAqWqwMkACs2jq6V8 SBtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709157846; x=1709762646; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=jb2gwN6bxiLt3LtO6maFpO1+dlXHorrZhIAqEy+dyf0=; b=ca+pEwMGXBBtLvXMpNeSVX+RK3ARTvGQrQAMmEZe+/yPtDp1h9nDjjw1aWirwZFuA5 TIeniJc8H+B4dam+Jq/f1tSvKnx63IuC1HR3S/t17P8NiIjyvgPA2CrGBo23JBf30b9K jeSCx9IraQnwWHivN4YVC6wofGc1Z6GGgAMuxpShAruD00KQsos0L8Rp9ZcXe5wXxJS3 TyatCBYIXf9sJDHSRzzIYEuwmh3aGTMTRu6Dj0xsilKwYHlaWT3aQ/CVpjNPh30cSa3+ KAZQQlgp4Va3o0WD2XOpuiQsQ6yJaGYWMOa9fNgU3bJDk0z8Go4I490h5PGPeGEcTdRE exmg== X-Forwarded-Encrypted: i=1; AJvYcCUWSSN6HDzNV1sp8+cWYQEiKHOZbXyhHMcRej7ajG8bQOTSV42fVNbNBfhF2s1pqQWVE0Mc0YFN5b5BWrsRPu0M0NlbKzfeVLcO X-Gm-Message-State: AOJu0YxtsMuKLNTOgMxhImnX+EOfQwvgvc6UtM8rrAT47fbvcaD3xk+P 1SaJPBO335pJ2V9msTm6tNtUK8RObHwwlg3fRaCPJM55fQHRIvz7cGYZw7qoJ+OV08OknoeyyEI KRw== X-Google-Smtp-Source: AGHT+IGMObvTbyRYVynt1WQ166gAI0nZBfbogex59iyxp3MG5aS6oyV+QzKMWgqsF735JJkDDkfnULmb9+M= X-Received: from jthies.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:23db]) (user=jthies job=sendgmr) by 2002:a05:6902:150f:b0:dc6:207e:e8b1 with SMTP id q15-20020a056902150f00b00dc6207ee8b1mr125822ybu.2.1709157845820; Wed, 28 Feb 2024 14:04:05 -0800 (PST) Date: Wed, 28 Feb 2024 22:04:02 +0000 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.44.0.rc1.240.g4c46232300-goog Message-ID: <20240228220403.3614604-1-jthies@google.com> Subject: [PATCH v2 4/4] usb: typec: ucsi: Register SOP' alternate modes with cable plug From: Jameson Thies To: heikki.krogerus@linux.intel.com, linux-usb@vger.kernel.org Cc: jthies@google.com, pmalani@chromium.org, bleung@google.com, abhishekpandit@chromium.org, andersson@kernel.org, dmitry.baryshkov@linaro.org, fabrice.gasnier@foss.st.com, gregkh@linuxfoundation.org, hdegoede@redhat.com, neil.armstrong@linaro.org, rajaram.regupathy@intel.com, saranya.gopal@intel.com, linux-kernel@vger.kernel.org, Benson Leung Register SOP' alternate modes with a Type-C Connector Class cable plug. Alternate modes are queried from the PPM using the GET_ALTERNATE_MODES command with recipient set to SOP'. Reviewed-by: Benson Leung Reviewed-by: Prashant Malani Reviewed-by: Heikki Krogerus Signed-off-by: Jameson Thies --- SOP' GET_ALTERNATE_MODE responses from the PPM are correctly registered to the cable plug. nospike-rev4 /sys/class/typec # ls port0-cable/port0-plug0/ device port0-plug0.0 port0-plug0.1 power subsystem uevent Changes in v2: - Shortened lines to within 80 characters. - Tested on usb-testing branch merged with chromeOS 6.8-rc2 kernel. drivers/usb/typec/ucsi/ucsi.c | 60 +++++++++++++++++++++++++++++++++++ drivers/usb/typec/ucsi/ucsi.h | 2 ++ 2 files changed, 62 insertions(+) diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index 4088422b33c74..281954fe9d855 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -399,6 +399,27 @@ static int ucsi_register_altmode(struct ucsi_connector *con, con->partner_altmode[i] = alt; break; + case UCSI_RECIPIENT_SOP_P: + i = ucsi_next_altmode(con->plug_altmode); + if (i < 0) { + ret = i; + goto err; + } + + ret = ucsi_altmode_next_mode(con->plug_altmode, desc->svid); + if (ret < 0) + return ret; + + desc->mode = ret; + + alt = typec_plug_register_altmode(con->plug, desc); + if (IS_ERR(alt)) { + ret = PTR_ERR(alt); + goto err; + } + + con->plug_altmode[i] = alt; + break; default: return -EINVAL; } @@ -566,6 +587,9 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient) case UCSI_RECIPIENT_SOP: adev = con->partner_altmode; break; + case UCSI_RECIPIENT_SOP_P: + adev = con->plug_altmode; + break; default: return; } @@ -849,6 +873,33 @@ static void ucsi_unregister_partner_pdos(struct ucsi_connector *con) con->partner_pd = NULL; } +static int ucsi_register_plug(struct ucsi_connector *con) +{ + struct typec_plug *plug; + struct typec_plug_desc desc = {.index = TYPEC_PLUG_SOP_P}; + + plug = typec_register_plug(con->cable, &desc); + if (IS_ERR(plug)) { + dev_err(con->ucsi->dev, + "con%d: failed to register plug (%ld)\n", con->num, + PTR_ERR(plug)); + return PTR_ERR(plug); + } + + con->plug = plug; + return 0; +} + +static void ucsi_unregister_plug(struct ucsi_connector *con) +{ + if (!con->plug) + return; + + ucsi_unregister_altmodes(con, UCSI_RECIPIENT_SOP_P); + typec_unregister_plug(con->plug); + con->plug = NULL; +} + static int ucsi_register_cable(struct ucsi_connector *con) { struct typec_cable *cable; @@ -892,6 +943,7 @@ static void ucsi_unregister_cable(struct ucsi_connector *con) if (!con->cable) return; + ucsi_unregister_plug(con); typec_unregister_cable(con->cable); memset(&con->cable_identity, 0, sizeof(con->cable_identity)); con->cable = NULL; @@ -1098,6 +1150,14 @@ static int ucsi_check_cable(struct ucsi_connector *con) if (ret < 0) return ret; + ret = ucsi_register_plug(con); + if (ret < 0) + return ret; + + ret = ucsi_register_altmodes(con, UCSI_RECIPIENT_SOP_P); + if (ret < 0) + return ret; + return 0; } diff --git a/drivers/usb/typec/ucsi/ucsi.h b/drivers/usb/typec/ucsi/ucsi.h index b89fae82e8ce7..32daf5f586505 100644 --- a/drivers/usb/typec/ucsi/ucsi.h +++ b/drivers/usb/typec/ucsi/ucsi.h @@ -429,9 +429,11 @@ struct ucsi_connector { struct typec_port *port; struct typec_partner *partner; struct typec_cable *cable; + struct typec_plug *plug; struct typec_altmode *port_altmode[UCSI_MAX_ALTMODES]; struct typec_altmode *partner_altmode[UCSI_MAX_ALTMODES]; + struct typec_altmode *plug_altmode[UCSI_MAX_ALTMODES]; struct typec_capability typec_cap;