From patchwork Mon Mar 8 13:22:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shengjiu Wang X-Patchwork-Id: 395413 Delivered-To: patch@linaro.org Received: by 2002:a02:8562:0:0:0:0:0 with SMTP id g89csp1715811jai; Mon, 8 Mar 2021 05:36:11 -0800 (PST) X-Google-Smtp-Source: ABdhPJwJcNElZBNG97j7sdMeJAq7wn5MfQql5879gWfOd5SkzLqkBodBwSwtcAD/fsXklSHld9iX X-Received: by 2002:aa7:dd05:: with SMTP id i5mr22131789edv.300.1615210571231; Mon, 08 Mar 2021 05:36:11 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1615210571; cv=none; d=google.com; s=arc-20160816; b=A5FLgGmZG8asY8gLXW0PuSqmLEFz0k6S4LIqRSRxs4fmmA23nbzRFt9afD2bnw8mZ1 tXNx7qMkRkgWXt8SvVNeDyPPvwLepspJJamuJEWfiuHVWCEMeuKly+/YQ9mBv8MRIpet pFH4m8OVUkkbOgKqDElV9UTGC/JGHzPwb2SSfT5XR4LIPGcx/PdRLHDcwsgsHk546ttZ Iw82ekF5UkseIV9NnGHvOz1Her6MaJSEjuwesiZMmKzbrph53TgknRl5MfvEDvIzy4/2 1KOSbF7tItvuztNINir47wY2YxwFOmK1CFh+itZ4SZz9gh8O6yRUvjIDxAkd0oYz5Cqy Pf4w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:message-id:date:subject:to:from; bh=5Qslk6tBIIIsm7QaDmKeX4p6TlWSfmAfRqZkXkfULDQ=; b=bMb76uVp0sGB5m+9T7iM1o4ExzoT6pHvkKTaRDoFeG5JxURFmEI4nY0W256IJgnie3 xspV9Q/5HFDZR1vvhbhrmwpSVAupiWMyNhVAETg+TvCyMWym27nDSrYFSLEtUj6pmc0U u3DF4PIGAzIpAhXy5qapzyMODD2Ge+PkUmdNab4A2ygl7ncrutLMTSrU3oJu06RSIlga XLS8LAywljecRxxvzmanA+H4Wv8DZsD1dWznbWWuGbgLCuE/xgIzt92qGC5tvOFC4Ah/ VwQQhvLxzXImf/N9bjvRHa+CvEGNKSt+ctj3ajO4gneG93ZZ47kLMsnbEfKxVbgw0TZl STrw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=nxp.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id jo14si6783734ejb.460.2021.03.08.05.36.11; Mon, 08 Mar 2021 05:36:11 -0800 (PST) Received-SPF: pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=nxp.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230507AbhCHNfi (ORCPT + 6 others); Mon, 8 Mar 2021 08:35:38 -0500 Received: from inva020.nxp.com ([92.121.34.13]:34904 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229729AbhCHNfe (ORCPT ); Mon, 8 Mar 2021 08:35:34 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 15F401A0BBF; Mon, 8 Mar 2021 14:35:33 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 75F1E1A0BB7; Mon, 8 Mar 2021 14:35:26 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id C25084024E; Mon, 8 Mar 2021 14:35:17 +0100 (CET) From: Shengjiu Wang To: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, timur@kernel.org, nicoleotsuka@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, linuxppc-dev@lists.ozlabs.org, robh+dt@kernel.org, devicetree@vger.kernel.org Subject: [PATCH v4 0/6] Add audio driver base on rpmsg on i.MX platform Date: Mon, 8 Mar 2021 21:22:24 +0800 Message-Id: <1615209750-2357-1-git-send-email-shengjiu.wang@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Asymmetric multiprocessor, there is Cortex-A core and Cortex-M core, Linux is running on A core, RTOS is running on M core. The audio hardware device can be controlled by Cortex-M device, So audio playback/capture can be handled by M core. Rpmsg is the interface for sending and receiving msg to and from M core, that we can create a virtual sound on Cortex-A core side. A core will tell the Cortex-M core sound format/rate/channel, where is the data buffer, what is the period size, when to start, when to stop and when suspend or resume happen, each of this behavior there is defined rpmsg command. Especially we designed the low power audio case, that is to allocate a large buffer and fill the data, then Cortex-A core can go to sleep mode, Cortex-M core continue to play the sound, when the buffer is consumed, Cortex-M core will trigger the Cortex-A core to wakeup to fill data. changes in v4: - remove the sound card node, merge the property to cpu dai node according to Rob's comments. - sound card device will be registered by cpu dai driver. - Fix do_div issue reported by kernel test robot changes in v3: - add local refcount for clk enablement in hw_params() - update the document according Rob's comments changes in v2: - update codes and comments according to Mark's comments Shengjiu Wang (6): ASoC: soc-component: Add snd_soc_pcm_component_ack ASoC: fsl_rpmsg: Add CPU DAI driver for audio base on rpmsg ASoC: dt-bindings: fsl_rpmsg: Add binding doc for rpmsg cpu dai driver ASoC: imx-audio-rpmsg: Add rpmsg_driver for audio channel ASoC: imx-pcm-rpmsg: Add platform driver for audio base on rpmsg ASoC: imx-rpmsg: Add machine driver for audio base on rpmsg .../devicetree/bindings/sound/fsl,rpmsg.yaml | 118 +++ include/sound/soc-component.h | 3 + sound/soc/fsl/Kconfig | 28 + sound/soc/fsl/Makefile | 6 + sound/soc/fsl/fsl_rpmsg.c | 283 ++++++ sound/soc/fsl/fsl_rpmsg.h | 42 + sound/soc/fsl/imx-audio-rpmsg.c | 151 +++ sound/soc/fsl/imx-pcm-rpmsg.c | 919 ++++++++++++++++++ sound/soc/fsl/imx-pcm-rpmsg.h | 512 ++++++++++ sound/soc/fsl/imx-rpmsg.c | 127 +++ sound/soc/soc-component.c | 14 + sound/soc/soc-pcm.c | 2 + 12 files changed, 2205 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml create mode 100644 sound/soc/fsl/fsl_rpmsg.c create mode 100644 sound/soc/fsl/fsl_rpmsg.h create mode 100644 sound/soc/fsl/imx-audio-rpmsg.c create mode 100644 sound/soc/fsl/imx-pcm-rpmsg.c create mode 100644 sound/soc/fsl/imx-pcm-rpmsg.h create mode 100644 sound/soc/fsl/imx-rpmsg.c -- 2.27.0