From nobody Thu Apr 16 02:11:24 2026 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 D346CC433FE for ; Wed, 23 Nov 2022 16:58:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237876AbiKWQ6Z (ORCPT ); Wed, 23 Nov 2022 11:58:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238238AbiKWQ6U (ORCPT ); Wed, 23 Nov 2022 11:58:20 -0500 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 228701C13A for ; Wed, 23 Nov 2022 08:58:18 -0800 (PST) Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2ANFXduS006384; Wed, 23 Nov 2022 10:58:13 -0600 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=undvmwFEvRPQUPi2f8r9jtjOCibt7dyqMNuLYGsabHA=; b=jGTSRilqRr9YvM1dN69kSrNkh7nEcrdmnL4+K8Od+wubOfipjVfq88QqcV36r4ye1T6+ m94Qpd5+VF2giKfCyKxGaE4J9dCAl/EBhzTyUjhwYxomVSiXKFYxbrRC/dr7OtBeQVzO WxqS+p7EbAncyI2I6Qm2iMTaQghCXLzS1mAnb0exjzVKJsYZKFZl1b4Hb4njWqkfMJvu MQmraK9TWG01R4J5v8FRef8+MLXEWc9bSFv8zX4c/N/FtBeq7rwyqgrsitMHW7Vl53js srus0QbBu2CaYXcl7h0+OQ5QXlX79FiM3HGozYfYF9NzIkrVTRPHmHPy/vEwdYwQgbXv HA== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3kxwe6w536-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Nov 2022 10:58:13 -0600 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 15.2.1118.20; Wed, 23 Nov 2022 10:58:11 -0600 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 15.2.1118.20 via Frontend Transport; Wed, 23 Nov 2022 10:58:11 -0600 Received: from edi-sw-dsktp-006.ad.cirrus.com (edi-sw-dsktp-006.ad.cirrus.com [198.90.251.111]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 6E18AB10; Wed, 23 Nov 2022 16:58:11 +0000 (UTC) From: Richard Fitzgerald To: CC: , , , Simon Trimmer , Richard Fitzgerald Subject: [PATCH v2 1/2] firmware: cs_dsp: cs_dsp_coeff_write_ctrl() should report changed Date: Wed, 23 Nov 2022 16:58:10 +0000 Message-ID: <20221123165811.3014472-2-rf@opensource.cirrus.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221123165811.3014472-1-rf@opensource.cirrus.com> References: <20221123165811.3014472-1-rf@opensource.cirrus.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: n7iAUIsEFDAu8asQrDFFZNuM1FtzhEfb X-Proofpoint-GUID: n7iAUIsEFDAu8asQrDFFZNuM1FtzhEfb 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 ALSA callers need to know whether there was a change to the value so that they can report a control write change correctly. Signed-off-by: Simon Trimmer Signed-off-by: Richard Fitzgerald --- drivers/firmware/cirrus/cs_dsp.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_= dsp.c index 81cc3d0f6eec..17b7198b87dc 100644 --- a/drivers/firmware/cirrus/cs_dsp.c +++ b/drivers/firmware/cirrus/cs_dsp.c @@ -752,7 +752,7 @@ static int cs_dsp_coeff_write_ctrl_raw(struct cs_dsp_co= eff_ctl *ctl, * * Must be called with pwr_lock held. * - * Return: Zero for success, a negative number on error. + * Return: < 0 on error, 1 when the control value changed and 0 when it ha= s not. */ int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off, const void *buf, size_t len) @@ -767,16 +767,23 @@ int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *= ctl, if (len + off * sizeof(u32) > ctl->len) return -EINVAL; =20 - if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) + if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) { ret =3D -EPERM; - else if (buf !=3D ctl->cache) - memcpy(ctl->cache + off * sizeof(u32), buf, len); + } else if (buf !=3D ctl->cache) { + if (memcmp(ctl->cache + off * sizeof(u32), buf, len)) + memcpy(ctl->cache + off * sizeof(u32), buf, len); + else + return 0; + } =20 ctl->set =3D 1; if (ctl->enabled && ctl->dsp->running) ret =3D cs_dsp_coeff_write_ctrl_raw(ctl, off, buf, len); =20 - return ret; + if (ret < 0) + return ret; + + return 1; } EXPORT_SYMBOL_GPL(cs_dsp_coeff_write_ctrl); =20 --=20 2.30.2 From nobody Thu Apr 16 02:11:24 2026 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 6B91CC433FE for ; Wed, 23 Nov 2022 16:58:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239201AbiKWQ6a (ORCPT ); Wed, 23 Nov 2022 11:58:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238552AbiKWQ6U (ORCPT ); Wed, 23 Nov 2022 11:58:20 -0500 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A05901D32B for ; Wed, 23 Nov 2022 08:58:19 -0800 (PST) Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2ANFXqhH006843; Wed, 23 Nov 2022 10:58:14 -0600 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=h6RfvX774aia7JX50zH3ODFQb8VZzmsKWXVtJMdQgIk=; b=VXbQ8tsenmwlYB1tA4hCBFRT6LaPRR2H+y5KFKl4j6wUQ569xomIUt4Uh7krNpAnMLjS ZWBFFmXa6ltDcUv/FItmlux3m0iTaDuqSS2o2lZ33TORSR3tmEK8kloCtm+7xUqKX6Cd FbQX3obbsmq01zGkqNW4yjfYBVhuuDFzWPOYq7kj03Um+kIpfbEJ2V7hVKU79VUxqYv1 c0IdEQG6SA/KIBCn81+bi35oad5mUG/dkU/IOwA8C7bRHGFV1HIHpm5akAB3kuneWfBw 8emRISR7Do1wx3oTQ4gtm9H1GZF+65D9emD+K8NpKHX2kNSmmmo0BtvTNrN/tlBsEQcP eg== Received: from ediex02.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 3kxwe6w535-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Nov 2022 10:58:14 -0600 Received: from ediex01.ad.cirrus.com (198.61.84.80) by ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.20; Wed, 23 Nov 2022 10:58:11 -0600 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server id 15.2.1118.20 via Frontend Transport; Wed, 23 Nov 2022 10:58:11 -0600 Received: from edi-sw-dsktp-006.ad.cirrus.com (edi-sw-dsktp-006.ad.cirrus.com [198.90.251.111]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 7DF03477; Wed, 23 Nov 2022 16:58:11 +0000 (UTC) From: Richard Fitzgerald To: CC: , , , Simon Trimmer , Richard Fitzgerald Subject: [PATCH v2 2/2] ASoC: wm_adsp: Return whether changed when writing controls Date: Wed, 23 Nov 2022 16:58:11 +0000 Message-ID: <20221123165811.3014472-3-rf@opensource.cirrus.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221123165811.3014472-1-rf@opensource.cirrus.com> References: <20221123165811.3014472-1-rf@opensource.cirrus.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: fCV41dzgLXv_ENcHJf7fsGestb3xhgUU X-Proofpoint-GUID: fCV41dzgLXv_ENcHJf7fsGestb3xhgUU 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 Functions that update cs_dsp controls need to handle return codes that indicate whether the control value changed. A return code of 1 indicates a change, 0 indicates no-change and a negative value is an error condition. Acked controls implicitly change value when written so a successful write shall always report that the value changed. Signed-off-by: Simon Trimmer Signed-off-by: Richard Fitzgerald --- sound/soc/codecs/wm_adsp.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 34a94b011518..02fbffd73853 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -419,16 +420,21 @@ static int wm_coeff_tlv_put(struct snd_kcontrol *kctl, (struct soc_bytes_ext *)kctl->private_value; struct wm_coeff_ctl *ctl =3D bytes_ext_to_ctl(bytes_ext); struct cs_dsp_coeff_ctl *cs_ctl =3D ctl->cs_ctl; + void *scratch; int ret =3D 0; =20 - mutex_lock(&cs_ctl->dsp->pwr_lock); + scratch =3D vmalloc(size); + if (!scratch) + return -ENOMEM; =20 - if (copy_from_user(cs_ctl->cache, bytes, size)) + if (copy_from_user(scratch, bytes, size)) { ret =3D -EFAULT; - else - ret =3D cs_dsp_coeff_write_ctrl(cs_ctl, 0, cs_ctl->cache, size); - - mutex_unlock(&cs_ctl->dsp->pwr_lock); + } else { + mutex_lock(&cs_ctl->dsp->pwr_lock); + ret =3D cs_dsp_coeff_write_ctrl(cs_ctl, 0, scratch, size); + mutex_unlock(&cs_ctl->dsp->pwr_lock); + } + vfree(scratch); =20 return ret; } @@ -455,7 +461,10 @@ static int wm_coeff_put_acked(struct snd_kcontrol *kct= l, =20 mutex_unlock(&cs_ctl->dsp->pwr_lock); =20 - return ret; + if (ret < 0) + return ret; + + return 1; } =20 static int wm_coeff_get(struct snd_kcontrol *kctl, @@ -682,10 +691,10 @@ int wm_adsp_write_ctl(struct wm_adsp *dsp, const char= *name, int type, int ret; =20 ret =3D cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len); - if (ret) + if (ret < 0) return ret; =20 - if (cs_ctl->flags & WMFW_CTL_FLAG_SYS) + if (ret =3D=3D 0 || (cs_ctl->flags & WMFW_CTL_FLAG_SYS)) return 0; =20 ctl =3D cs_ctl->priv; --=20 2.30.2