From patchwork Fri Aug 26 23:43:16 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 9302185 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7D8AA608A7 for ; Fri, 26 Aug 2016 23:45:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6F3CF2960C for ; Fri, 26 Aug 2016 23:45:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6408029660; Fri, 26 Aug 2016 23:45:29 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 60EC52960C for ; Fri, 26 Aug 2016 23:45:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754755AbcHZXpG (ORCPT ); Fri, 26 Aug 2016 19:45:06 -0400 Received: from nblzone-211-213.nblnetworks.fi ([83.145.211.213]:54116 "EHLO hillosipuli.retiisi.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754702AbcHZXop (ORCPT ); Fri, 26 Aug 2016 19:44:45 -0400 Received: from lanttu.localdomain (lanttu-e.localdomain [192.168.1.64]) by hillosipuli.retiisi.org.uk (Postfix) with ESMTP id 8A975600A3; Sat, 27 Aug 2016 02:43:43 +0300 (EEST) From: Sakari Ailus To: linux-media@vger.kernel.org, hverkuil@xs4all.nl Cc: mchehab@osg.samsung.com, shuahkh@osg.samsung.com, laurent.pinchart@ideasonboard.com, Sakari Ailus Subject: [RFC v3 08/21] media: Enable allocating the media device dynamically Date: Sat, 27 Aug 2016 02:43:16 +0300 Message-Id: <1472255009-28719-9-git-send-email-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1472255009-28719-1-git-send-email-sakari.ailus@linux.intel.com> References: <1472255009-28719-1-git-send-email-sakari.ailus@linux.intel.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sakari Ailus Allow allocating the media device dynamically. As the struct media_device embeds struct media_devnode, the lifetime of that object is that same than that of the media_device. Signed-off-by: Sakari Ailus --- drivers/media/media-device.c | 15 +++++++++++++++ include/media/media-device.h | 13 +++++++++++++ 2 files changed, 28 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index d90d8c6..6eca50c 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -686,6 +686,21 @@ void media_device_init(struct media_device *mdev) } EXPORT_SYMBOL_GPL(media_device_init); +struct media_device *media_device_alloc(struct device *dev) +{ + struct media_device *mdev; + + mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); + if (!mdev) + return NULL; + + mdev->dev = dev; + media_device_init(mdev); + + return mdev; +} +EXPORT_SYMBOL_GPL(media_device_alloc); + void media_device_cleanup(struct media_device *mdev) { ida_destroy(&mdev->entity_internal_idx); diff --git a/include/media/media-device.h b/include/media/media-device.h index 4eee613..1fdfbd7 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -197,6 +197,15 @@ static inline __must_check int media_entity_enum_init( void media_device_init(struct media_device *mdev); /** + * media_device_alloc() - Allocate and initialise a media device + * + * @dev: The associated struct device pointer + * + * Allocate and initialise a media device. Returns a media device. + */ +struct media_device *media_device_alloc(struct device *dev); + +/** * media_device_cleanup() - Cleanups a media device element * * @mdev: pointer to struct &media_device @@ -425,6 +434,10 @@ void __media_device_usb_init(struct media_device *mdev, const char *driver_name); #else +static inline struct media_device *media_device_alloc(struct device *dev) +{ + return NULL; +} static inline int media_device_register(struct media_device *mdev) { return 0;