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=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 32C43C4360C for ; Sun, 13 Oct 2019 19:00:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 14168206A3 for ; Sun, 13 Oct 2019 19:00:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729469AbfJMTAX (ORCPT ); Sun, 13 Oct 2019 15:00:23 -0400 Received: from inva021.nxp.com ([92.121.34.21]:39256 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728786AbfJMTAT (ORCPT ); Sun, 13 Oct 2019 15:00:19 -0400 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C8C2D200190; Sun, 13 Oct 2019 21:00:16 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C5EB220014F; Sun, 13 Oct 2019 21:00:16 +0200 (CEST) Received: from fsr-ub1864-103.ea.freescale.net (fsr-ub1864-103.ea.freescale.net [10.171.82.17]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 38E072059D; Sun, 13 Oct 2019 21:00:16 +0200 (CEST) From: Daniel Baluta To: perex@perex.cz, tiwai@suse.com, broonie@kernel.org, kuninori.morimoto.gx@renesas.com Cc: lgirdwood@gmail.com, robh+dt@kernel.org, alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-imx@nxp.com, Daniel Baluta Subject: [RFC PATCH 1/2] ASoC: simple-card: Introduce force-dpcm DT property Date: Sun, 13 Oct 2019 22:00:13 +0300 Message-Id: <20191013190014.32138-2-daniel.baluta@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191013190014.32138-1-daniel.baluta@nxp.com> References: <20191013190014.32138-1-daniel.baluta@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Until now dai_link uses dynamic PCM in the following conditions: * it is dpcm_selectable (this means compatible string is simple-scu-card) * it has convert-xxx property * or it has more than one CPU DAIs Our use case requires to be able to build a DPCM link with just 1 CPU. Add force-dpcm DT property to realize this. Signed-off-by: Daniel Baluta --- include/sound/simple_card_utils.h | 4 ++++ sound/soc/generic/simple-card-utils.c | 17 +++++++++++++++++ sound/soc/generic/simple-card.c | 25 +++++++++++++++++++++++-- 3 files changed, 44 insertions(+), 2 deletions(-) diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h index 985a5f583de4..0578bbfa4a24 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -48,6 +48,7 @@ struct asoc_simple_priv { struct asoc_simple_data adata; struct snd_soc_codec_conf *codec_conf; unsigned int mclk_fs; + unsigned int force_dpcm; } *dai_props; struct asoc_simple_jack hp_jack; struct asoc_simple_jack mic_jack; @@ -120,6 +121,9 @@ void asoc_simple_convert_fixup(struct asoc_simple_data *data, void asoc_simple_parse_convert(struct device *dev, struct device_node *np, char *prefix, struct asoc_simple_data *data); +void asoc_simple_parse_force_dpcm(struct device *dev, + struct device_node *np, char *prefix, + unsigned int *force_dpcm); int asoc_simple_parse_routing(struct snd_soc_card *card, char *prefix); diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c index 9b794775df53..2f03a73f8a8a 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -52,6 +52,23 @@ void asoc_simple_parse_convert(struct device *dev, } EXPORT_SYMBOL_GPL(asoc_simple_parse_convert); +void asoc_simple_parse_force_dpcm(struct device *dev, + struct device_node *np, + char *prefix, + unsigned int *force_dpcm) +{ + char prop[128]; + + if (!prefix) + prefix = ""; + + /* dpcm property */ + snprintf(prop, sizeof(prop), "%s%s", prefix, "force-dpcm"); + if (of_find_property(np, prop, NULL)) + *force_dpcm = 1; +} +EXPORT_SYMBOL_GPL(asoc_simple_parse_force_dpcm); + int asoc_simple_parse_daifmt(struct device *dev, struct device_node *node, struct device_node *codec, diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index fc9c753db8dd..e40e22c8813b 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -92,6 +92,21 @@ static void simple_parse_convert(struct device *dev, of_node_put(node); } +static void simple_parse_force_dpcm(struct device *dev, + struct device_node *np, + unsigned int *force_dpcm) +{ + struct device_node *top = dev->of_node; + struct device_node *node = of_get_parent(np); + + asoc_simple_parse_force_dpcm(dev, top, PREFIX, force_dpcm); + asoc_simple_parse_force_dpcm(dev, node, PREFIX, force_dpcm); + asoc_simple_parse_force_dpcm(dev, node, NULL, force_dpcm); + asoc_simple_parse_force_dpcm(dev, np, NULL, force_dpcm); + + of_node_put(node); +} + static void simple_parse_mclk_fs(struct device_node *top, struct device_node *cpu, struct device_node *codec, @@ -372,6 +387,7 @@ static int simple_for_each_link(struct asoc_simple_priv *priv, struct asoc_simple_data adata; struct device_node *codec; struct device_node *np; + unsigned int force_dpcm = 0; int num = of_get_child_count(node); /* get codec */ @@ -387,15 +403,20 @@ static int simple_for_each_link(struct asoc_simple_priv *priv, for_each_child_of_node(node, np) simple_parse_convert(dev, np, &adata); + /* get force-dpcm property */ + for_each_child_of_node(node, np) + simple_parse_force_dpcm(dev, np, &force_dpcm); + /* loop for all CPU/Codec node */ for_each_child_of_node(node, np) { /* * It is DPCM * if it has many CPUs, - * or has convert-xxx property + * or it has convert-xxx property + * or it has force-dpcm property */ if (dpcm_selectable && - (num > 2 || + (num > 2 || force_dpcm || adata.convert_rate || adata.convert_channels)) ret = func_dpcm(priv, np, codec, li, is_top); /* else normal sound */ -- 2.17.1