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 D8C39C433EF for ; Mon, 20 Jun 2022 20:55:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344027AbiFTUzZ (ORCPT ); Mon, 20 Jun 2022 16:55:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47136 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344434AbiFTUzK (ORCPT ); Mon, 20 Jun 2022 16:55:10 -0400 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 141481B7B6 for ; Mon, 20 Jun 2022 13:55:03 -0700 (PDT) Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 25KBU7tj002386; Mon, 20 Jun 2022 15:54:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=PODMain02222019; bh=22fxRs36mOwLx01C6ew27/L9/hScJO9HrYMwPcvStzY=; b=Ho2O1wh1GqrTDRrwLDFlkzRVCNLsTvrxqG5RVmTozUKwu9uTyGiMPLU/IN2Zu8TnFUQg g1rJP8G9RDvPhnjJzAZJAqVidy4TSFAdnFv8tBfTwV1CUm5JlA876a72wEVNdPekw0Bx 1THrlRgiZYamGXkfAKoTvet1XoawU9HH54xTwJlJOEeKvDSS4dfLhSl/tNtfAfnYDhry kbMZEnyEudM7tm3dUAPouCLk1LBYxLEK1q92wxzdFERjxGTGVM3N69VXciyEziK8YQaU Jpi/N3Ko4SRxWcZTXZBeHS4DZMKNjpd/x0V0/PgY+H5B+109zcxh7bF1Ta43Ag8ghSt8 1w== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3gsc41antf-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Mon, 20 Jun 2022 15:54:46 -0500 Received: from EDIEX01.ad.cirrus.com (198.61.84.80) by EDIEX01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Mon, 20 Jun 2022 21:54:44 +0100 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by EDIEX01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server id 15.1.2375.28 via Frontend Transport; Mon, 20 Jun 2022 21:54:44 +0100 Received: from vitaly-Legion-7-16ACHg6.ad.cirrus.com (unknown [198.90.238.175]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 9EF77468; Mon, 20 Jun 2022 20:54:44 +0000 (UTC) From: Vitaly Rodionov To: Jaroslav Kysela , Takashi Iwai , Mark Brown CC: , , , Stefan Binding Subject: [PATCH v5 06/14] ALSA: hda: cs35l41: Support reading subsystem id from ACPI Date: Mon, 20 Jun 2022 21:54:24 +0100 Message-ID: <20220620205432.3809-7-vitalyr@opensource.cirrus.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220620205432.3809-1-vitalyr@opensource.cirrus.com> References: <20220620205432.3809-1-vitalyr@opensource.cirrus.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-GUID: lK3MsFbaq7aYNTq3IzdTe-sMcLR5zxFT X-Proofpoint-ORIG-GUID: lK3MsFbaq7aYNTq3IzdTe-sMcLR5zxFT X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Stefan Binding On some laptop models, the ACPI contains the unique Subsystem ID, and this value should be preferred over the value from the HDA driver. Signed-off-by: Stefan Binding Signed-off-by: Vitaly Rodionov --- sound/pci/hda/cs35l41_hda.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c index 7f0132694774..5f89a0462eb6 100644 --- a/sound/pci/hda/cs35l41_hda.c +++ b/sound/pci/hda/cs35l41_hda.c @@ -545,6 +545,36 @@ static int cs35l41_hda_apply_properties(struct cs35l41_hda *cs35l41) return cs35l41_hda_channel_map(cs35l41->dev, 0, NULL, 1, &hw_cfg->spk_pos); } +static int cs35l41_get_acpi_sub_string(struct device *dev, struct acpi_device *adev, + const char **subsysid) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + int ret = 0; + + status = acpi_evaluate_object(adev->handle, "_SUB", NULL, &buffer); + if (ACPI_SUCCESS(status)) { + obj = buffer.pointer; + if (obj->type == ACPI_TYPE_STRING) { + *subsysid = devm_kstrdup(dev, obj->string.pointer, GFP_KERNEL); + if (*subsysid == NULL) { + dev_err(dev, "Cannot allocate Subsystem ID"); + ret = -ENOMEM; + } + } else { + dev_warn(dev, "Warning ACPI _SUB did not return a string\n"); + ret = -ENODEV; + } + acpi_os_free(buffer.pointer); + } else { + dev_dbg(dev, "Warning ACPI _SUB failed: %#x\n", status); + ret = -ENODEV; + } + + return ret; +} + static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, int id) { struct cs35l41_hw_cfg *hw_cfg = &cs35l41->hw_cfg; @@ -564,6 +594,12 @@ static int cs35l41_hda_read_acpi(struct cs35l41_hda *cs35l41, const char *hid, i physdev = get_device(acpi_get_first_physical_node(adev)); acpi_dev_put(adev); + ret = cs35l41_get_acpi_sub_string(cs35l41->dev, adev, &cs35l41->acpi_subsystem_id); + if (ret) + dev_info(cs35l41->dev, "No Subsystem ID found in ACPI: %d", ret); + else + dev_dbg(cs35l41->dev, "Subsystem ID %s found", cs35l41->acpi_subsystem_id); + property = "cirrus,dev-index"; ret = device_property_count_u32(physdev, property); if (ret <= 0) -- 2.34.1