From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shreyas NC Subject: [PATCH v7 00/10] soundwire: Add multi link support Date: Thu, 26 Jul 2018 17:12:32 +0530 Message-ID: <1532605362-19282-1-git-send-email-shreyas.nc@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by alsa0.perex.cz (Postfix) with ESMTP id 7F09A26739D for ; Thu, 26 Jul 2018 13:44:12 +0200 (CEST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org Cc: patches.audio@intel.com, gregkh@linuxfoundation.org, pierre-louis.bossart@linux.intel.com, vkoul@kernel.org, Shreyas NC , sanyog.r.kale@intel.com List-Id: alsa-devel@alsa-project.org Currently, in the SoundWire subsystem, the concept of stream is limited to a Master and one or more Slaves(Codecs). This series aims to add support for multiple Master(s) sharing the same reference clock and synchronized in the hardware. This patch series adds: - Fix to avoid duplicate stream state assignment - Avoid incorrect stream release after configuring Master - Fix to avoid bus lock acquired twice - Helpers to lock bus instances part of the stream - Boiler plate conversion of code to support a list of Master runtime - Support multi link bank switch to support synchronization between multiple masters - Add Intel platform ops for pre/post bank switch Additionally, as suggested by Vinod, the generic fixes are arranged at the top of the series followed by the Documentation patch for multi link support and then the multi link patches. changes in v7: - Fix the git bisect issue pointed by Pierre. Now, the initialization of the m_rt_count and its modification/usage is split into 2 patches. While the declaration and initialization is in one patch, modification of the refcount and usage is in the multilink bankswitch patch. - Re-arrange the patches as suggested by Vinod changes in v6: - Add patch to fix acquiring bus lock twice during master release - In sdw_stream_add_master(), perform multi link check at start of function as suggested by Pierre - Minor comment fixes Sanyog Kale (3): soundwire: Fix acquiring bus lock twice during master release Documentation: soundwire: Add documentation for multi link soundwire: Add support to lock across bus instances Shreyas NC (6): soundwire: Fix duplicate stream state assignment soundwire: Fix incorrect exit after configuring stream soundwire: Initialize completion for defer messages soundwire: keep track of Masters in a stream soundwire: Add support for multi link bank switch soundwire: intel: Add pre/post bank switch ops Vinod Koul (1): soundwire: Handle multiple master instances in a stream Documentation/driver-api/soundwire/stream.rst | 28 ++ drivers/soundwire/bus.c | 6 + drivers/soundwire/bus.h | 4 + drivers/soundwire/intel.c | 65 ++++ drivers/soundwire/stream.c | 511 +++++++++++++++++++------- include/linux/soundwire/sdw.h | 12 +- 6 files changed, 489 insertions(+), 137 deletions(-) -- 2.7.4