From patchwork Tue Aug 23 04:50:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 12951701 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 06CEBC25B08 for ; Tue, 23 Aug 2022 04:48:10 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 14DE71673; Tue, 23 Aug 2022 06:47:19 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 14DE71673 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1661230089; bh=IPnnb0fU/qVJlOwgD1izgy0CaO2aldoMjVq4ZHg4Azw=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=EB4p2O6mTReNDD6byC7mEhUm8TAW9jZQQnywdDZDxicay0HCeLW8S6v+Xbf/1+p+A UmjAhowiBEN4XuSj155VU7gY1SuVtApWRZOBHyO4KWzY+SQr1t8bFk9Qp4bDb76l9I Vg4B45W+ZYt7PurjaCD68MNwfqqEAdl/yUWtnaLM= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id A5597F804E7; Tue, 23 Aug 2022 06:46:54 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 02F8DF800A7; Tue, 23 Aug 2022 06:46:52 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 4743DF800A7 for ; Tue, 23 Aug 2022 06:46:46 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 4743DF800A7 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="B2YrrBln" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1661230007; x=1692766007; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=IPnnb0fU/qVJlOwgD1izgy0CaO2aldoMjVq4ZHg4Azw=; b=B2YrrBlnDebNss3+jigfBoSB2pHWPjBI+lvIr6SB6iHykwHM64DYYTgp Tp6iXO5QLIU/GJzS54err37AxsPF1GsNU13sGWKDUrGm2h6Vn6/XNsY8J u9bjKmGZKgkHMbUwyZTBa9KbQ1t9sEB9oLWL6CIu6/37Ca3tDEtpn79Aj ZJ+8Hd2Dr//zJPMldhfUKJoh+QVbFaZxwVL2f+JsYmvAI3+avPT0nFAU7 5hVxH6tL/h6bKhJPnC20k7VHwC18AaaX5SOvAwVbnY8iGtkBQ9vBPqiRh 49g8zHg4+8nynuyTw8PU5LXuQfTMcJojhoM7Ap3qzGY2/+H9/VOx/ZqTA Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10447"; a="319629721" X-IronPort-AV: E=Sophos;i="5.93,256,1654585200"; d="scan'208";a="319629721" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2022 21:46:16 -0700 X-IronPort-AV: E=Sophos;i="5.93,256,1654585200"; d="scan'208";a="669855093" Received: from bard-ubuntu.sh.intel.com ([10.239.185.57]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2022 21:46:15 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH 1/3] soundwire: bus: rename sdw_ida as sdw_bus_ida Date: Tue, 23 Aug 2022 12:50:02 +0800 Message-Id: <20220823045004.2670658-2-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220823045004.2670658-1-yung-chuan.liao@linux.intel.com> References: <20220823045004.2670658-1-yung-chuan.liao@linux.intel.com> MIME-Version: 1.0 Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, bard.liao@intel.com, linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Pierre-Louis Bossart To avoid confusions with follow-up patches using a IDA mechanism for peripheral 'device number' allocation, rename sdw_ida as sdw_bus_ida. Pure rename, no functionality change. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Rander Wang Signed-off-by: Bard Liao --- drivers/soundwire/bus.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index 8d4000664fa3..37638c20c804 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -11,11 +11,11 @@ #include "bus.h" #include "sysfs_local.h" -static DEFINE_IDA(sdw_ida); +static DEFINE_IDA(sdw_bus_ida); static int sdw_get_id(struct sdw_bus *bus) { - int rc = ida_alloc(&sdw_ida, GFP_KERNEL); + int rc = ida_alloc(&sdw_bus_ida, GFP_KERNEL); if (rc < 0) return rc; @@ -179,7 +179,7 @@ void sdw_bus_master_delete(struct sdw_bus *bus) sdw_master_device_del(bus); sdw_bus_debugfs_exit(bus); - ida_free(&sdw_ida, bus->id); + ida_free(&sdw_bus_ida, bus->id); } EXPORT_SYMBOL(sdw_bus_master_delete); From patchwork Tue Aug 23 04:50:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 12951702 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 20928C25B08 for ; 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X-IronPort-AV: E=McAfee;i="6500,9779,10447"; a="319629726" X-IronPort-AV: E=Sophos;i="5.93,256,1654585200"; d="scan'208";a="319629726" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2022 21:46:18 -0700 X-IronPort-AV: E=Sophos;i="5.93,256,1654585200"; d="scan'208";a="669855099" Received: from bard-ubuntu.sh.intel.com ([10.239.185.57]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2022 21:46:16 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH 2/3] soundwire: bus: allow device number to be unique at system level Date: Tue, 23 Aug 2022 12:50:03 +0800 Message-Id: <20220823045004.2670658-3-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220823045004.2670658-1-yung-chuan.liao@linux.intel.com> References: <20220823045004.2670658-1-yung-chuan.liao@linux.intel.com> MIME-Version: 1.0 Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, bard.liao@intel.com, linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Pierre-Louis Bossart The SoundWire specification allows the device number to be allocated at will. When a system includes multiple SoundWire links, the device number scope is limited to the link to which the device is attached. However, for integration/debug it can be convenient to have a unique device number across the system. This patch adds a 'dev_num_ida_min' field at the bus level, which when set will be used to allocate an IDA. The allocation happens when a hardware device reports as ATTACHED. If any error happens during the enumeration, the allocated IDA is not freed - the device number will be reused if/when the device re-joins the bus. The IDA is only freed when the Linux device is unregistered. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Rander Wang Signed-off-by: Bard Liao --- drivers/soundwire/bus.c | 23 +++++++++++++++++------ include/linux/soundwire/sdw.h | 4 ++++ 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index 37638c20c804..8970f8560766 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -12,6 +12,7 @@ #include "sysfs_local.h" static DEFINE_IDA(sdw_bus_ida); +static DEFINE_IDA(sdw_peripheral_ida); static int sdw_get_id(struct sdw_bus *bus) { @@ -157,9 +158,11 @@ static int sdw_delete_slave(struct device *dev, void *data) mutex_lock(&bus->bus_lock); - if (slave->dev_num) /* clear dev_num if assigned */ + if (slave->dev_num) { /* clear dev_num if assigned */ clear_bit(slave->dev_num, bus->assigned); - + if (bus->dev_num_ida_min) + ida_free(&sdw_peripheral_ida, slave->dev_num); + } list_del_init(&slave->node); mutex_unlock(&bus->bus_lock); @@ -639,10 +642,18 @@ static int sdw_get_device_num(struct sdw_slave *slave) { int bit; - bit = find_first_zero_bit(slave->bus->assigned, SDW_MAX_DEVICES); - if (bit == SDW_MAX_DEVICES) { - bit = -ENODEV; - goto err; + if (slave->bus->dev_num_ida_min) { + bit = ida_alloc_range(&sdw_peripheral_ida, + slave->bus->dev_num_ida_min, SDW_MAX_DEVICES, + GFP_KERNEL); + if (bit < 0) + goto err; + } else { + bit = find_first_zero_bit(slave->bus->assigned, SDW_MAX_DEVICES); + if (bit == SDW_MAX_DEVICES) { + bit = -ENODEV; + goto err; + } } /* diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 39058c841469..a2b31d25ea27 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -889,6 +889,9 @@ struct sdw_master_ops { * meaningful if multi_link is set. If set to 1, hardware-based * synchronization will be used even if a stream only uses a single * SoundWire segment. + * @dev_num_ida_min: if set, defines the minimum values for the IDA + * used to allocate system-unique device numbers. This value needs to be + * identical across all SoundWire bus in the system. */ struct sdw_bus { struct device *dev; @@ -913,6 +916,7 @@ struct sdw_bus { u32 bank_switch_timeout; bool multi_link; int hw_sync_min_links; + int dev_num_ida_min; }; int sdw_bus_master_add(struct sdw_bus *bus, struct device *parent, From patchwork Tue Aug 23 04:50:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 12951703 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EFD51C25B08 for ; Tue, 23 Aug 2022 04:48:41 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 3E00E167E; Tue, 23 Aug 2022 06:47:50 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 3E00E167E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1661230120; bh=aOGj0K2ETS0PToUhNjSmBRGkI427Kgkon4oqhCsUotM=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=qPMYMskl7cilDCQnCPWWtnYMgZM+jMdp2YYlEgncjkHgXofcxFx1EoECGF5XNknAB qyiljLVy9dcccS0zui1pKjmDWbvPxfb7R3WvD8Xt4WbliMpNSaFN1kK/1d+V92TTPV JI8E/jEpuEvK3kygAYnSIAJ1yOmBHkahsVSQSzFA= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 02429F8052D; Tue, 23 Aug 2022 06:46:57 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 1347BF800C9; Tue, 23 Aug 2022 06:46:54 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 3A2BCF8020D for ; Tue, 23 Aug 2022 06:46:48 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 3A2BCF8020D Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="XcsQLvBD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1661230009; x=1692766009; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=aOGj0K2ETS0PToUhNjSmBRGkI427Kgkon4oqhCsUotM=; b=XcsQLvBDW3zAJeOkUGtCvwqIsfg1Nkj1LiGiUjS3J3ZNImJFCujrQBX1 7JBU+/vxEJwxIEnV1J8Leig5bXPXSCXEg7v9r2jgY2m8L7/jEmtoHnt/H NpnQj61+GTyFmGD4+xAVZ7ReufcUAFJ0VtfjUu6HQx/uid2/HOzqO5OBl eFpE+ioas3sZ9eU9zIicLeOJx9n5nJ0HMC1KHXh33kMIAK++nvzvjIBpZ VIN0Bf6vsOgpVltAQyo9JFH1jGPIj/e51CPppevA5cOqU6M/mv0FjA5Aj uoFp5ICR3dE8eJ/bXvKTHhCJMoVrKiKEquSBCcsekXykJN4s+d+dNEAlM A==; X-IronPort-AV: E=McAfee;i="6500,9779,10447"; a="319629728" X-IronPort-AV: E=Sophos;i="5.93,256,1654585200"; d="scan'208";a="319629728" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2022 21:46:20 -0700 X-IronPort-AV: E=Sophos;i="5.93,256,1654585200"; d="scan'208";a="669855112" Received: from bard-ubuntu.sh.intel.com ([10.239.185.57]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Aug 2022 21:46:18 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH 3/3] soundwire: intel: set dev_num_ida_min Date: Tue, 23 Aug 2022 12:50:04 +0800 Message-Id: <20220823045004.2670658-4-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220823045004.2670658-1-yung-chuan.liao@linux.intel.com> References: <20220823045004.2670658-1-yung-chuan.liao@linux.intel.com> MIME-Version: 1.0 Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, bard.liao@intel.com, linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Pierre-Louis Bossart The allowed values for SoundWire device numbers are between 1 and 11 (inclusive). HDaudio/iDISP codecs typically use SDI values 0..3 (inclusive). To allow for a unique peripheral SDI/dev_number across HDaudio and SoundWire buses, we set the minimum base to 4. This still allows for 8 SoundWire peripherals in the system, currently more than needed in actual products. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Ranjani Sridharan Reviewed-by: Rander Wang Signed-off-by: Bard Liao --- drivers/soundwire/intel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 89d1d0d021fc..3e372599a8c3 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -22,6 +22,9 @@ #include "bus.h" #include "intel.h" +/* IDA min selected to avoid conflicts with HDaudio/iDISP SDI values */ +#define INTEL_DEV_NUM_IDA_MIN 4 + #define INTEL_MASTER_SUSPEND_DELAY_MS 3000 #define INTEL_MASTER_RESET_ITERATIONS 10 @@ -1307,6 +1310,7 @@ static int intel_link_probe(struct auxiliary_device *auxdev, cdns->msg_count = 0; bus->link_id = auxdev->id; + bus->dev_num_ida_min = INTEL_DEV_NUM_IDA_MIN; sdw_cdns_probe(cdns);