From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DA5DC43334 for ; Thu, 30 Jun 2022 18:35:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236628AbiF3SfJ (ORCPT ); Thu, 30 Jun 2022 14:35:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236082AbiF3SfI (ORCPT ); Thu, 30 Jun 2022 14:35:08 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 152003CA54; Thu, 30 Jun 2022 11:35:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656614107; x=1688150107; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=qfMvz34IQ1XlB/cxYb48cOD/Af4s6wGj7oK89k9bGoY=; b=IQCfJNOiwSujioUwO6dAZTa3HzwU3m2EQpa2Vgk1y/JZA0RPK6eCJtJX MhTPhj4crEj+5JkkLLCR9UqkS4iBQt6Uis2fqHLsb8mS8yvg9QVIWZ3s0 ZPeCOZ0KoCUyq/utwD9kLEAYiWmVsF3HTOO5BBioDXv21ygvlVF/LnMXM 9ZRKNSqI8lvuL7mb31UHyKK2LncO7ypDGVbrNRtK/Uk8S1pf+MxmUD1gb dTgGysIlsEVNc74Ad5kqLPsb6WCDGmFplTSPXqUwFEMB10/w7MHGXlD4N 8r9/MXEbXkStXi7VAsmy2BTGXRm78pQM+SAYTLZP55lf130qNAeewe+ox Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10394"; a="262233449" X-IronPort-AV: E=Sophos;i="5.92,235,1650956400"; d="scan'208";a="262233449" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jun 2022 11:35:06 -0700 X-IronPort-AV: E=Sophos;i="5.92,235,1650956400"; d="scan'208";a="618071253" Received: from jhilliar-mobl.amr.corp.intel.com (HELO [10.212.10.157]) ([10.212.10.157]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jun 2022 11:35:05 -0700 Message-ID: <2cc37f6d-72a7-9064-cad2-c6c6d21ede61@linux.intel.com> Date: Thu, 30 Jun 2022 13:35:05 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0 Thunderbird/91.10.0 Subject: Re: [PATCH v5 2/2] ASoC: cs35l41: Read System Name from ACPI _SUB to identify firmware Content-Language: en-US To: Stefan Binding , "Rafael J . Wysocki" , Len Brown , Mark Brown , Liam Girdwood Cc: linux-acpi@vger.kernel.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, patches@opensource.cirrus.com References: <20220630150135.1799535-1-sbinding@opensource.cirrus.com> <20220630150135.1799535-3-sbinding@opensource.cirrus.com> From: Pierre-Louis Bossart In-Reply-To: <20220630150135.1799535-3-sbinding@opensource.cirrus.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On 6/30/22 10:01, Stefan Binding wrote: > When loading firmware, wm_adsp uses a number of parameters to > determine the path of the firmware and tuning files to load. > One of these parameters is system_name. > Add support in cs35l41 to read this system name from the ACPI > _SUB ID in order to uniquely identify the firmware and tuning > mapped to a particular system. It's my understanding that the _SUB method is optional, not required. It may be wise to plan for a fallback, e.g to use DMI quirks or other identifiers, no? If it's used quite widely, then it may be a good thing to add to 'alsa-info'. > Signed-off-by: Stefan Binding > --- > sound/soc/codecs/cs35l41.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c > index 8766e19d85f1..d70469686699 100644 > --- a/sound/soc/codecs/cs35l41.c > +++ b/sound/soc/codecs/cs35l41.c > @@ -6,6 +6,7 @@ > // > // Author: David Rhodes > > +#include > #include > #include > #include > @@ -1142,6 +1143,24 @@ static int cs35l41_dsp_init(struct cs35l41_private *cs35l41) > return ret; > } > > +static int cs35l41_acpi_get_name(struct cs35l41_private *cs35l41) > +{ > + acpi_handle handle = ACPI_HANDLE(cs35l41->dev); > + const char *sub; > + > + /* If there is no ACPI_HANDLE, there is no ACPI for this system, return 0 */ > + if (!handle) > + return 0; > + > + sub = acpi_get_subsystem_id(handle); > + if (IS_ERR(sub)) > + return PTR_ERR(sub); > + > + cs35l41->dsp.system_name = sub; > + dev_dbg(cs35l41->dev, "Susystem ID: %s\n", cs35l41->dsp.system_name); Typo: Subsystem > + return 0; > +} > + > int cs35l41_probe(struct cs35l41_private *cs35l41, const struct cs35l41_hw_cfg *hw_cfg) > { > u32 regid, reg_revid, i, mtl_revid, int_status, chipid_match; > @@ -1270,6 +1289,10 @@ int cs35l41_probe(struct cs35l41_private *cs35l41, const struct cs35l41_hw_cfg * > goto err; > } > > + ret = cs35l41_acpi_get_name(cs35l41); > + if (ret < 0) > + goto err; > + > ret = cs35l41_dsp_init(cs35l41); > if (ret < 0) > goto err; > @@ -1316,6 +1339,7 @@ void cs35l41_remove(struct cs35l41_private *cs35l41) > pm_runtime_disable(cs35l41->dev); > > regmap_write(cs35l41->regmap, CS35L41_IRQ1_MASK1, 0xFFFFFFFF); > + kfree(cs35l41->dsp.system_name); > wm_adsp2_remove(&cs35l41->dsp); > cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type); >