From patchwork Thu Nov 5 21:21:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Hilber X-Patchwork-Id: 321408 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1961BC388F7 for ; Thu, 5 Nov 2020 21:28:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C8726221F8 for ; Thu, 5 Nov 2020 21:28:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732250AbgKEV2O (ORCPT ); Thu, 5 Nov 2020 16:28:14 -0500 Received: from plasma4.jpberlin.de ([80.241.57.33]:34347 "EHLO plasma4.jpberlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729783AbgKEV2N (ORCPT ); Thu, 5 Nov 2020 16:28:13 -0500 X-Greylist: delayed 385 seconds by postgrey-1.27 at vger.kernel.org; Thu, 05 Nov 2020 16:28:12 EST Received: from spamfilter04.heinlein-hosting.de (spamfilter04.heinlein-hosting.de [80.241.56.122]) by plasma.jpberlin.de (Postfix) with ESMTP id 98E0BAB79F; Thu, 5 Nov 2020 22:21:50 +0100 (CET) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from plasma.jpberlin.de ([80.241.56.68]) by spamfilter04.heinlein-hosting.de (spamfilter04.heinlein-hosting.de [80.241.56.122]) (amavisd-new, port 10030) with ESMTP id A_FVSXef25dI; Thu, 5 Nov 2020 22:21:49 +0100 (CET) Received: from webmail.opensynergy.com (unknown [217.66.60.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "*.opensynergy.com", Issuer "Starfield Secure Certificate Authority - G2" (not verified)) (Authenticated sender: opensynergy@jpberlin.de) by plasma.jpberlin.de (Postfix) with ESMTPSA id 7B9BEAB8ED; Thu, 5 Nov 2020 22:21:49 +0100 (CET) From: Peter Hilber To: , CC: Peter Hilber , Rob Herring , , , , , , , , Subject: [RFC PATCH v2 07/10] firmware: arm_scmi: Add per-device transport private info Date: Thu, 5 Nov 2020 22:21:13 +0100 Message-ID: <20201105212116.411422-8-peter.hilber@opensynergy.com> In-Reply-To: <20201105212116.411422-1-peter.hilber@opensynergy.com> References: <20201105212116.411422-1-peter.hilber@opensynergy.com> MIME-Version: 1.0 X-ClientProxiedBy: SR-MAIL-01.open-synergy.com (10.26.10.21) To SR-MAIL-01.open-synergy.com (10.26.10.21) X-MBO-SPAM-Probability: X-Rspamd-Score: -3.39 / 15.00 / 15.00 X-Rspamd-Queue-Id: 98E0BAB79F X-Rspamd-UID: dd361e Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The scmi-virtio transport will link a supplier device to the arm-scmi device in the link_supplier() op. The transport should then save a pointer to the linked device. To enable this, add a transport private info to the scmi_info. (The scmi_info is already reachable through the arm-scmi device driver_data.) Signed-off-by: Peter Hilber --- drivers/firmware/arm_scmi/common.h | 2 ++ drivers/firmware/arm_scmi/driver.c | 35 ++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index 2f55ac71555a..ec9fd7fce3c7 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -262,6 +262,8 @@ extern const struct scmi_desc scmi_mailbox_desc; extern const struct scmi_desc scmi_smc_desc; #endif +int scmi_set_transport_info(struct device *dev, void *transport_info); +void *scmi_get_transport_info(struct device *dev); void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr); void scmi_free_channel(struct scmi_chan_info *cinfo, struct idr *idr, int id); diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index dedc9b3f3e97..244141e45e88 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -84,6 +84,7 @@ struct scmi_xfers_info { * @rx_idr: IDR object to map protocol id to Rx channel info pointer * @protocols_imp: List of protocols implemented, currently maximum of * MAX_PROTOCOLS_IMP elements allocated by the base protocol + * @transport_info: Transport private info * @node: List head * @users: Number of users of this instance */ @@ -97,6 +98,7 @@ struct scmi_info { struct idr tx_idr; struct idr rx_idr; u8 *protocols_imp; + void *transport_info; struct list_head node; int users; }; @@ -315,6 +317,39 @@ void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr) } } +/** + * scmi_set_transport_info() - Set transport private info + * + * @dev: SCMI instance device + * @transport_info: transport private info + * + * Return: 0 on success, otherwise error. + */ +int scmi_set_transport_info(struct device *dev, void *transport_info) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + if (!info) + return -EBADR; + + info->transport_info = transport_info; + return 0; +} + +/** + * scmi_get_transport_info() - Get transport private info + * + * @dev: SCMI instance device + * + * Return: transport private info on success, otherwise NULL. + */ +void *scmi_get_transport_info(struct device *dev) +{ + struct scmi_info *info = dev_get_drvdata(dev); + + return info ? info->transport_info : NULL; +} + /** * scmi_xfer_put() - Release a transmit message *