From patchwork Thu Sep 26 10:07:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 11162243 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 45BF013BD for ; Thu, 26 Sep 2019 10:07:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 24EB4222C2 for ; Thu, 26 Sep 2019 10:07:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726269AbfIZKHd (ORCPT ); Thu, 26 Sep 2019 06:07:33 -0400 Received: from mga14.intel.com ([192.55.52.115]:2189 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725951AbfIZKHd (ORCPT ); Thu, 26 Sep 2019 06:07:33 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Sep 2019 03:07:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,551,1559545200"; d="scan'208";a="203825684" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 26 Sep 2019 03:07:31 -0700 From: Heikki Krogerus To: Ajay Gupta Cc: linux-usb@vger.kernel.org Subject: [PATCH 03/14] usb: typec: Separate the operations vector Date: Thu, 26 Sep 2019 13:07:21 +0300 Message-Id: <20190926100727.71117-4-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190926100727.71117-1-heikki.krogerus@linux.intel.com> References: <20190926100727.71117-1-heikki.krogerus@linux.intel.com> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Introducing struct typec_operations which has the same callbacks as struct typec_capability. The old callbacks are kept for now, but after all users have been converted, they will be removed. Signed-off-by: Heikki Krogerus --- drivers/usb/typec/class.c | 90 +++++++++++++++++++++++++-------------- include/linux/usb/typec.h | 19 +++++++++ 2 files changed, 76 insertions(+), 33 deletions(-) diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 9fab0be8f08c..542be63795db 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -59,6 +59,7 @@ struct typec_port { struct typec_mux *mux; const struct typec_capability *cap; + const struct typec_operations *ops; }; #define to_typec_port(_dev_) container_of(_dev_, struct typec_port, dev) @@ -961,11 +962,6 @@ preferred_role_store(struct device *dev, struct device_attribute *attr, return -EOPNOTSUPP; } - if (!port->cap->try_role) { - dev_dbg(dev, "Setting preferred role not supported\n"); - return -EOPNOTSUPP; - } - role = sysfs_match_string(typec_roles, buf); if (role < 0) { if (sysfs_streq(buf, "none")) @@ -974,9 +970,18 @@ preferred_role_store(struct device *dev, struct device_attribute *attr, return -EINVAL; } - ret = port->cap->try_role(port->cap, role); - if (ret) - return ret; + if (port->ops && port->ops->try_role) { + ret = port->ops->try_role(port, role); + if (ret) + return ret; + } else if (port->cap && port->cap->try_role) { + ret = port->cap->try_role(port->cap, role); + if (ret) + return ret; + } else { + dev_dbg(dev, "Setting preferred role not supported\n"); + return -EOPNOTSUPP; + } port->prefer_role = role; return size; @@ -1005,11 +1010,6 @@ static ssize_t data_role_store(struct device *dev, struct typec_port *port = to_typec_port(dev); int ret; - if (!port->cap->dr_set) { - dev_dbg(dev, "data role swapping not supported\n"); - return -EOPNOTSUPP; - } - ret = sysfs_match_string(typec_data_roles, buf); if (ret < 0) return ret; @@ -1020,9 +1020,19 @@ static ssize_t data_role_store(struct device *dev, goto unlock_and_ret; } - ret = port->cap->dr_set(port->cap, ret); - if (ret) + if (port->ops && port->ops->dr_set) { + ret = port->ops->dr_set(port, ret); + if (ret) + goto unlock_and_ret; + } else if (port->cap && port->cap->dr_set) { + ret = port->cap->dr_set(port->cap, ret); + if (ret) + goto unlock_and_ret; + } else { + dev_dbg(dev, "data role swapping not supported\n"); + ret = -EOPNOTSUPP; goto unlock_and_ret; + } ret = size; unlock_and_ret: @@ -1055,11 +1065,6 @@ static ssize_t power_role_store(struct device *dev, return -EOPNOTSUPP; } - if (!port->cap->pr_set) { - dev_dbg(dev, "power role swapping not supported\n"); - return -EOPNOTSUPP; - } - if (port->pwr_opmode != TYPEC_PWR_MODE_PD) { dev_dbg(dev, "partner unable to swap power role\n"); return -EIO; @@ -1077,11 +1082,21 @@ static ssize_t power_role_store(struct device *dev, goto unlock_and_ret; } - ret = port->cap->pr_set(port->cap, ret); - if (ret) + if (port->ops && port->ops->pr_set) { + ret = port->ops->pr_set(port, ret); + if (ret) + goto unlock_and_ret; + } else if (port->cap && port->cap->pr_set) { + ret = port->cap->pr_set(port->cap, ret); + if (ret) + goto unlock_and_ret; + } else { + dev_dbg(dev, "power role swapping not supported\n"); + ret = -EOPNOTSUPP; goto unlock_and_ret; - + } ret = size; + unlock_and_ret: mutex_unlock(&port->port_type_lock); return ret; @@ -1108,7 +1123,8 @@ port_type_store(struct device *dev, struct device_attribute *attr, int ret; enum typec_port_type type; - if (!port->cap->port_type_set || port->fixed_role != TYPEC_PORT_DRP) { + if ((!port->ops || !port->ops->port_type_set) || + !port->cap->port_type_set || port->fixed_role != TYPEC_PORT_DRP) { dev_dbg(dev, "changing port type not supported\n"); return -EOPNOTSUPP; } @@ -1125,7 +1141,10 @@ port_type_store(struct device *dev, struct device_attribute *attr, goto unlock_and_ret; } - ret = port->cap->port_type_set(port->cap, type); + if (port->ops && port->ops->port_type_set) + ret = port->ops->port_type_set(port, type); + else + ret = port->cap->port_type_set(port->cap, type); if (ret) goto unlock_and_ret; @@ -1181,18 +1200,22 @@ static ssize_t vconn_source_store(struct device *dev, return -EOPNOTSUPP; } - if (!port->cap->vconn_set) { - dev_dbg(dev, "VCONN swapping not supported\n"); - return -EOPNOTSUPP; - } - ret = kstrtobool(buf, &source); if (ret) return ret; - ret = port->cap->vconn_set(port->cap, (enum typec_role)source); - if (ret) - return ret; + if (port->ops && port->ops->vconn_set) { + ret = port->ops->vconn_set(port, source); + if (ret) + return ret; + } else if (port->cap && port->cap->vconn_set) { + ret = port->cap->vconn_set(port->cap, (enum typec_role)source); + if (ret) + return ret; + } else { + dev_dbg(dev, "VCONN swapping not supported\n"); + return -EOPNOTSUPP; + } return size; } @@ -1597,6 +1620,7 @@ struct typec_port *typec_register_port(struct device *parent, port->id = id; port->cap = cap; + port->ops = cap->ops; port->port_type = cap->type; port->fixed_role = cap->type; port->port_roles = cap->data; diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h index 8b90cd77331c..6c95a9ff43c6 100644 --- a/include/linux/usb/typec.h +++ b/include/linux/usb/typec.h @@ -168,6 +168,22 @@ struct typec_partner_desc { struct usb_pd_identity *identity; }; +/* + * struct typec_operations - USB Type-C Port Operations + * @try_role: Set data role preference for DRP port + * @dr_set: Set Data Role + * @pr_set: Set Power Role + * @vconn_set: Source VCONN + * @port_type_set: Set port type + */ +struct typec_operations { + int (*try_role)(struct typec_port *port, int role); + int (*dr_set)(struct typec_port *port, enum typec_data_role); + int (*pr_set)(struct typec_port *port, enum typec_role); + int (*vconn_set)(struct typec_port *port, bool source); + int (*port_type_set)(struct typec_port *port, enum typec_port_type); +}; + /* * struct typec_capability - USB Type-C Port Capabilities * @type: Supported power role of the port @@ -180,6 +196,7 @@ struct typec_partner_desc { * @mux: Multiplexer switch for Alternate/Accessory Modes * @fwnode: Optional fwnode of the port * @driver_data: Private pointer for driver specific info + * @ops: Port operations vector * @try_role: Set data role preference for DRP port * @dr_set: Set Data Role * @pr_set: Set Power Role @@ -201,6 +218,8 @@ struct typec_capability { struct fwnode_handle *fwnode; void *driver_data; + const struct typec_operations *ops; + int (*try_role)(const struct typec_capability *, int role);