From patchwork Fri Jan 22 00:57:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 8086261 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-renesas-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 2BFB5BEEE5 for ; Fri, 22 Jan 2016 00:57:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 64FEF20434 for ; Fri, 22 Jan 2016 00:57:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A92AB2042A for ; Fri, 22 Jan 2016 00:57:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751379AbcAVA5m (ORCPT ); Thu, 21 Jan 2016 19:57:42 -0500 Received: from galahad.ideasonboard.com ([185.26.127.97]:58721 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751433AbcAVA5m (ORCPT ); Thu, 21 Jan 2016 19:57:42 -0500 Received: from avalon.access.network (nblzone-211-213.nblnetworks.fi [83.145.211.213]) by galahad.ideasonboard.com (Postfix) with ESMTPSA id 1A1F020B64 for ; Fri, 22 Jan 2016 01:56:36 +0100 (CET) From: Laurent Pinchart To: linux-renesas-soc@vger.kernel.org Subject: [PATCH/RFC v2 32/56] v4l: subdev: Add pad config allocator and init Date: Fri, 22 Jan 2016 02:57:01 +0200 Message-Id: <1453424245-18782-33-git-send-email-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.4.10 In-Reply-To: <1453424245-18782-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> References: <1453424245-18782-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Laurent Pinchart Add a new subdev operation to initialize a subdev pad config array, and a helper function to allocate and initialize the array. This can be used by bridge drivers to implement try format based on subdev pad operations. Signed-off-by: Laurent Pinchart Acked-by: Vaibhav Hiremath Acked-by: Hans Verkuil --- drivers/media/v4l2-core/v4l2-subdev.c | 19 ++++++++++++++++++- include/media/v4l2-subdev.h | 11 +++++++++++ 2 files changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 83615b8fb46a..951a9cf7b47e 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -35,7 +35,7 @@ static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd) { #if defined(CONFIG_VIDEO_V4L2_SUBDEV_API) - fh->pad = kzalloc(sizeof(*fh->pad) * sd->entity.num_pads, GFP_KERNEL); + fh->pad = v4l2_subdev_alloc_pad_config(sd); if (fh->pad == NULL) return -ENOMEM; #endif @@ -569,6 +569,23 @@ int v4l2_subdev_link_validate(struct media_link *link) sink, link, &source_fmt, &sink_fmt); } EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate); + +struct v4l2_subdev_pad_config *v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd) +{ + struct v4l2_subdev_pad_config *cfg; + + if (!sd->entity.num_pads) + return NULL; + + cfg = kcalloc(sd->entity.num_pads, sizeof(*cfg), GFP_KERNEL); + if (!cfg) + return NULL; + + v4l2_subdev_call(sd, pad, init_cfg, cfg); + + return cfg; +} +EXPORT_SYMBOL_GPL(v4l2_subdev_alloc_pad_config); #endif /* CONFIG_MEDIA_CONTROLLER */ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index b273cf9ac047..c97935455669 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -21,6 +21,7 @@ #ifndef _V4L2_SUBDEV_H #define _V4L2_SUBDEV_H +#include #include #include #include @@ -604,6 +605,8 @@ struct v4l2_subdev_pad_config { * may be adjusted by the subdev driver to device capabilities. */ struct v4l2_subdev_pad_ops { + void (*init_cfg)(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg); int (*enum_mbus_code)(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code); @@ -798,7 +801,15 @@ int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, struct v4l2_subdev_format *source_fmt, struct v4l2_subdev_format *sink_fmt); int v4l2_subdev_link_validate(struct media_link *link); + +struct v4l2_subdev_pad_config *v4l2_subdev_alloc_pad_config(struct v4l2_subdev *sd); + +static inline void v4l2_subdev_free_pad_config(struct v4l2_subdev_pad_config *cfg) +{ + kfree(cfg); +} #endif /* CONFIG_MEDIA_CONTROLLER */ + void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops);