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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD338ECE58B for ; Sun, 6 Oct 2019 17:59:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7AC6920673 for ; Sun, 6 Oct 2019 17:59:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570384777; bh=HG5hHxCXr/7SYGLS3y8yVDNosPel9kbxaaWVanjJFcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FcjAdbiTDeso2hg3WYNZG/smqgZfW0ta3yttEry/JxXiNMDFS22W0+a58M7HQ302X iZjk8ld32wPYJxa98qiRRvIDVszQFQHdRBEZ01d5XqcENGZPl211CQ6dtVD2rlrRiL EgeqTVBSvIF0pnSn49Rp0bZpabOVSjwwrnLd5nf8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727693AbfJFRaY (ORCPT ); Sun, 6 Oct 2019 13:30:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:56234 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727326AbfJFRaU (ORCPT ); Sun, 6 Oct 2019 13:30:20 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B6E152087E; Sun, 6 Oct 2019 17:30:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383019; bh=HG5hHxCXr/7SYGLS3y8yVDNosPel9kbxaaWVanjJFcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sXanqBHRSYfj9Q61Lmwv1IZeWGha8GE8jR5QKP2TY95sIuKcOQeCzMcFHqKlC+pKq MdPbDa2wdbc7OOaLCfxQCAqX+EBFiSmo1O+h/MgOxqMqQHZTO0t/m9aBzfstb+874o yqZxkqHE9Ls5y8H/P74XCRgZ2mJL+831OHv60reI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pierre-Louis Bossart , Vinod Koul , Sasha Levin Subject: [PATCH 4.19 056/106] soundwire: intel: fix channel number reported by hardware Date: Sun, 6 Oct 2019 19:21:02 +0200 Message-Id: <20191006171147.789863879@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171124.641144086@linuxfoundation.org> References: <20191006171124.641144086@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pierre-Louis Bossart [ Upstream commit 18046335643de6d21327f5ae034c8fb8463f6715 ] On all released Intel controllers (CNL/CML/ICL), PDI2 reports an invalid count, force the correct hardware-supported value This may have to be revisited with platform-specific values if the hardware changes, but for now this is good enough. Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20190806005522.22642-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/soundwire/intel.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index a6e2581ada703..29bc99c4a7b66 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -282,6 +282,16 @@ intel_pdi_get_ch_cap(struct sdw_intel *sdw, unsigned int pdi_num, bool pcm) if (pcm) { count = intel_readw(shim, SDW_SHIM_PCMSYCHC(link_id, pdi_num)); + + /* + * WORKAROUND: on all existing Intel controllers, pdi + * number 2 reports channel count as 1 even though it + * supports 8 channels. Performing hardcoding for pdi + * number 2. + */ + if (pdi_num == 2) + count = 7; + } else { count = intel_readw(shim, SDW_SHIM_PDMSCAP(link_id)); count = ((count & SDW_SHIM_PDMSCAP_CPSS) >> -- 2.20.1