From nobody Fri Dec 19 14:22:24 2025 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 12562C6FA8F for ; Tue, 29 Aug 2023 16:05:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237391AbjH2QEv (ORCPT ); Tue, 29 Aug 2023 12:04:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237418AbjH2QEp (ORCPT ); Tue, 29 Aug 2023 12:04:45 -0400 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CA63193 for ; Tue, 29 Aug 2023 09:04:42 -0700 (PDT) Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.17.1.22/8.17.1.22) with ESMTP id 37T5NIS9018221; Tue, 29 Aug 2023 11:04:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h= from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding:content-type; s=PODMain02222019; bh=I ossbza8GwL87hC4l6+2yc0jPbBH11QSTUNCI7BFD/M=; b=ogn1TMIdJhnDHbvi3 QuyMgWA7yFCHLwSgBYZStYuDnNwC7aRek8bLNQ2cJRM5xNDb4aQHIjJZiTNGz/I5 jV6/mZ3cs4nK1HKEFdws2QjnwUD2fFQZPEVQwHrZlD1/478lu+1YhAGZseINvsZk SOUUq8tGL7Gk+ppbUc3s9+8r9qP2+jRZ4sAKG/R0mF9VtkXUbzdgBPDmPoDg6waI tuK+kHiE26c9/l2C7dNgGzCzMgj6sCNaC67O4LFX2HyQYhZKkySqQQuvyST1KFrT f9ov9cOBvoohKv0y5So1hKpnb3M3+M7yUsSVxa/TPK4BLrD448iTX+qKapMET95g 4nBEQ== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3sqesybsuj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 29 Aug 2023 11:04:35 -0500 (CDT) Received: from ediex02.ad.cirrus.com (198.61.84.81) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.37; Tue, 29 Aug 2023 17:04:33 +0100 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by anon-ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server id 15.2.1118.37 via Frontend Transport; Tue, 29 Aug 2023 17:04:33 +0100 Received: from edi-sw-dsktp-006.ad.cirrus.com (edi-sw-dsktp-006.ad.cirrus.com [198.90.251.75]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 1DCD711D4; Tue, 29 Aug 2023 16:04:33 +0000 (UTC) From: Richard Fitzgerald To: CC: , , , Simon Trimmer , Richard Fitzgerald Subject: [PATCH] ASoC: cs35l56: Waiting for firmware to boot must be tolerant of I/O errors Date: Tue, 29 Aug 2023 17:04:33 +0100 Message-ID: <20230829160433.2647889-1-rf@opensource.cirrus.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: im8d37YlNdLDuFNT9NP-dchYbQph1y00 X-Proofpoint-GUID: im8d37YlNdLDuFNT9NP-dchYbQph1y00 X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Simon Trimmer Ignore failure to read from the cs35l56 when polling as the device will NAK i2c accesses until it has booted and this would terminate the poll of regmap_read_poll_timeout(). Fixes: 8a731fd37f8b ("ASoC: cs35l56: Move utility functions to shared file") Signed-off-by: Simon Trimmer Signed-off-by: Richard Fitzgerald --- sound/soc/codecs/cs35l56-shared.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/sound/soc/codecs/cs35l56-shared.c b/sound/soc/codecs/cs35l56-s= hared.c index ae373f335ea8..98b1e63360ae 100644 --- a/sound/soc/codecs/cs35l56-shared.c +++ b/sound/soc/codecs/cs35l56-shared.c @@ -243,26 +243,27 @@ int cs35l56_wait_for_firmware_boot(struct cs35l56_bas= e *cs35l56_base) { unsigned int reg; unsigned int val; - int ret; + int read_ret, poll_ret; =20 if (cs35l56_base->rev < CS35L56_REVID_B0) reg =3D CS35L56_DSP1_HALO_STATE_A1; else reg =3D CS35L56_DSP1_HALO_STATE; =20 - ret =3D regmap_read_poll_timeout(cs35l56_base->regmap, reg, - val, - (val < 0xFFFF) && (val >=3D CS35L56_HALO_STATE_BOOT_DONE), - CS35L56_HALO_STATE_POLL_US, - CS35L56_HALO_STATE_TIMEOUT_US); + /* + * This can't be a regmap_read_poll_timeout() because cs35l56 will NAK + * I2C until it has booted which would terminate the poll + */ + poll_ret =3D read_poll_timeout(regmap_read, read_ret, + (val < 0xFFFF) && (val >=3D CS35L56_HALO_STATE_BOOT_DONE), + CS35L56_HALO_STATE_POLL_US, + CS35L56_HALO_STATE_TIMEOUT_US, + false, + cs35l56_base->regmap, reg, &val); =20 - if ((ret < 0) && (ret !=3D -ETIMEDOUT)) { - dev_err(cs35l56_base->dev, "Failed to read HALO_STATE: %d\n", ret); - return ret; - } - - if ((ret =3D=3D -ETIMEDOUT) || (val !=3D CS35L56_HALO_STATE_BOOT_DONE)) { - dev_err(cs35l56_base->dev, "Firmware boot fail: HALO_STATE=3D%#x\n", val= ); + if (poll_ret) { + dev_err(cs35l56_base->dev, "Firmware boot timed out(%d): HALO_STATE=3D%#= x\n", + read_ret, val); return -EIO; } =20 --=20 2.30.2