Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932488AbaJNO7X (ORCPT ); Tue, 14 Oct 2014 10:59:23 -0400 Received: from resqmta-po-05v.sys.comcast.net ([96.114.154.164]:60320 "EHLO resqmta-po-05v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932145AbaJNO7W (ORCPT ); Tue, 14 Oct 2014 10:59:22 -0400 From: Shuah Khan To: m.chehab@samsung.com, akpm@linux-foundation.org, gregkh@linuxfoundation.org, crope@iki.fi, olebowle@gmx.com, dheitmueller@kernellabs.com, hverkuil@xs4all.nl, ramakrmu@cisco.com, sakari.ailus@linux.intel.com, laurent.pinchart@ideasonboard.com, perex@perex.cz, tiwai@suse.de, prabhakar.csengg@gmail.com, tim.gardner@canonical.com, linux@eikelenboom.it Cc: Shuah Khan , linux-media@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 0/6] media token resource framework Date: Tue, 14 Oct 2014 08:58:36 -0600 Message-Id: X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add media token device resource framework to allow sharing resources such as tuner, dma, audio etc. across media drivers and non-media sound drivers that control media hardware. The Media token resource is created at the main struct device that is common to all drivers that claim various pieces of the main media device, which allows them to find the resource using the main struct device. As an example, digital, analog, and snd-usb-audio drivers can use the media token resource API using the main struct device for the interface the media device is attached to. This patch series consists of media token resource framework and changes to use it in dvb-core, v4l2-core, au0828 driver, and snd-usb-audio driver. With these changes dvb and v4l2 can share the tuner without disrupting each other. Used tvtime, xawtv, kaffeine, and vlc, vlc audio capture option, arecord/aplay during development to identify v4l2 vb2 and vb1 ioctls and file operations that disrupt the digital stream and would require changes to check tuner ownership prior to changing the tuner configuration. vb2 changes are made in the v4l2-core and vb1 changes are made in the au0828 driver to encourage porting drivers to vb2 to advantage of the new media token resource framework with changes in the core. In this patch v2 series, fixed problems identified in the patch v1 series. Important ones are changing snd-usb-audio to use media tokens, holding tuner lock in VIDIOC_ENUMINPUT, and VIDIOC_QUERYSTD. Shuah Khan (6): media: add media token device resource framework media: v4l2-core changes to use media token api media: au0828-video changes to use media token api media: dvb-core changes to use media token api sound/usb: pcm changes to use media token api media: au0828-core changes to create and destroy media MAINTAINERS | 2 + drivers/media/dvb-core/dvb_frontend.c | 14 +- drivers/media/usb/au0828/au0828-core.c | 23 +++ drivers/media/usb/au0828/au0828-video.c | 42 +++++- drivers/media/v4l2-core/v4l2-fh.c | 7 + drivers/media/v4l2-core/v4l2-ioctl.c | 61 ++++++++ include/linux/media_tknres.h | 50 +++++++ lib/Makefile | 2 + lib/media_tknres.c | 237 +++++++++++++++++++++++++++++++ sound/usb/pcm.c | 9 ++ 10 files changed, 445 insertions(+), 2 deletions(-) create mode 100644 include/linux/media_tknres.h create mode 100644 lib/media_tknres.c -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/