From patchwork Tue Jul 17 15:42:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jerome Brunet X-Patchwork-Id: 10529963 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id CE1DD6020A for ; Tue, 17 Jul 2018 15:46:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC81127F54 for ; Tue, 17 Jul 2018 15:46:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B080729454; Tue, 17 Jul 2018 15:46:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D9BDF28A40 for ; Tue, 17 Jul 2018 15:46:02 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id C3717267822; Tue, 17 Jul 2018 17:43:21 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id B423E2677F2; Tue, 17 Jul 2018 17:43:18 +0200 (CEST) Received: from mail-wr1-f65.google.com (mail-wr1-f65.google.com [209.85.221.65]) by alsa0.perex.cz (Postfix) with ESMTP id AAFE62677CE for ; Tue, 17 Jul 2018 17:43:16 +0200 (CEST) Received: by mail-wr1-f65.google.com with SMTP id h10-v6so1727632wre.6 for ; Tue, 17 Jul 2018 08:43:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=vNkHdoHxDTeCb62fmSaQ1EzoUhqjgTMT8K04+gGWmyw=; b=x4h6FNFIbgslVABs4yx6Ef3hrKhmAIpPvW6tgE3K4xyzcCEy2n+ZA8Dcy9/SsbHkkY Vkae1JTqRp7WOdAthQ1i6XTIBVoFHbSztiYW8D7/HDfaL7w4evi/JmFmpH9DtLTqCVSx yNgNSBbhSb4zJnXUagOIB3xW1vvq+Gb+ydOxLUD7Lrmz9L0DOiHRbVNzDlJRv/qYLCEa U3ukyASfngFHyZ1aNM+e6C8cSnZ8EMDk8ytely5HlRXVL2KH4Mn1fC3J5OrEoNAgaIvK utIGTQqOqsHDldE9IfiXNTkKaU77aRojAOaiO1ToW1N/NQSlkXEjOgBeQnKBwxv5dSLn IcXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=vNkHdoHxDTeCb62fmSaQ1EzoUhqjgTMT8K04+gGWmyw=; b=g8zcHKIIK0dwGDfXtGyAKQ81uCddMWmmUg+lMVrUqBt/ljSbv5JsoYh7M3c2JyMHcu d8m7b+UTarEn7ZHrtc0b1+nd1vGZwyytdvFI+tR3NTWZ49NbqEpS4Z0zxrcEANbLMYwA wc44Bd8+JhWgcUT5EX9RkOvxeqQ4YBJYPTj1PIb3VYX6MQGrNV8l+vIZaxcy1aHkgE91 7Ve0epwHtzRgiNUzzGaKrGazvXj9SzIPItSocV8IM0SV8/oQ5Wz1E4tWRaI6PZh6yysg JW4Md3m5vcy+JZ4Kijk0qSZCZe8HLMONlU8n44OXQ/Ev8psDqdpDwjxos+ToVruKanAc 7+ew== X-Gm-Message-State: AOUpUlG0zpSEoVPHvkitjnk8JdsZW5q2ZvF0kUfpTT+gGl0Kci64lKx6 EGSRecMTZT1erxnVPiV9B+nZGA== X-Google-Smtp-Source: AAOMgpe4658GPRpwI0WB+JptZhGZCyZlIY7k3Algxl2QNSmSGkshhF99koxbMBn/UQySAR+K5V6cSw== X-Received: by 2002:adf:fe8f:: with SMTP id l15-v6mr1860963wrr.165.1531842196399; Tue, 17 Jul 2018 08:43:16 -0700 (PDT) Received: from boomer.baylibre.local ([90.63.244.31]) by smtp.googlemail.com with ESMTPSA id s12-v6sm17598252wmc.2.2018.07.17.08.43.15 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 17 Jul 2018 08:43:15 -0700 (PDT) From: Jerome Brunet To: Mark Brown , Liam Girdwood , Kevin Hilman , Carlo Caione Date: Tue, 17 Jul 2018 17:42:52 +0200 Message-Id: <20180717154304.9973-4-jbrunet@baylibre.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20180717154304.9973-1-jbrunet@baylibre.com> References: <20180717154304.9973-1-jbrunet@baylibre.com> Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, Jerome Brunet Subject: [alsa-devel] [PATCH RESEND 03/15] ASoC: meson: add axg frddr driver X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Add the playback memory interface of Amlogic's axg SoCs. This device pulls data from DDR to an internal FIFO. This FIFO is then used to feed TDM and SPDIF Output devices. Signed-off-by: Jerome Brunet --- sound/soc/meson/Kconfig | 7 +++ sound/soc/meson/Makefile | 2 + sound/soc/meson/axg-frddr.c | 141 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 150 insertions(+) create mode 100644 sound/soc/meson/axg-frddr.c diff --git a/sound/soc/meson/Kconfig b/sound/soc/meson/Kconfig index c3eb5e050308..cdd78f62e8d7 100644 --- a/sound/soc/meson/Kconfig +++ b/sound/soc/meson/Kconfig @@ -5,4 +5,11 @@ config SND_MESON_AXG_FIFO tristate select REGMAP_MMIO +config SND_MESON_AXG_FRDDR + tristate "Amlogic AXG Playback FIFO support" + select SND_MESON_AXG_FIFO + help + Select Y or M to add support for the frontend playback interfaces + embedded in the Amlogic AXG SoC family + endmenu diff --git a/sound/soc/meson/Makefile b/sound/soc/meson/Makefile index 75289b6b3ade..9c5d7d4a8e33 100644 --- a/sound/soc/meson/Makefile +++ b/sound/soc/meson/Makefile @@ -1,5 +1,7 @@ # SPDX-License-Identifier: (GPL-2.0 OR MIT) snd-soc-meson-axg-fifo-objs := axg-fifo.o +snd-soc-meson-axg-frddr-objs := axg-frddr.o obj-$(CONFIG_SND_MESON_AXG_FIFO) += snd-soc-meson-axg-fifo.o +obj-$(CONFIG_SND_MESON_AXG_FRDDR) += snd-soc-meson-axg-frddr.o diff --git a/sound/soc/meson/axg-frddr.c b/sound/soc/meson/axg-frddr.c new file mode 100644 index 000000000000..a6f6f6a2eca8 --- /dev/null +++ b/sound/soc/meson/axg-frddr.c @@ -0,0 +1,141 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +// +// Copyright (c) 2018 BayLibre, SAS. +// Author: Jerome Brunet + +/* This driver implements the frontend playback DAI of AXG based SoCs */ + +#include +#include +#include +#include +#include +#include + +#include "axg-fifo.h" + +#define CTRL0_FRDDR_PP_MODE BIT(30) + +static int axg_frddr_dai_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); + unsigned int fifo_depth, fifo_threshold; + int ret; + + /* Enable pclk to access registers and clock the fifo ip */ + ret = clk_prepare_enable(fifo->pclk); + if (ret) + return ret; + + /* Apply single buffer mode to the interface */ + regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_FRDDR_PP_MODE, 0); + + /* + * TODO: We could adapt the fifo depth and the fifo threshold + * depending on the expected memory throughput and lantencies + * For now, we'll just use the same values as the vendor kernel + * Depth and threshold are zero based. + */ + fifo_depth = AXG_FIFO_MIN_CNT - 1; + fifo_threshold = (AXG_FIFO_MIN_CNT / 2) - 1; + regmap_update_bits(fifo->map, FIFO_CTRL1, + CTRL1_FRDDR_DEPTH_MASK | CTRL1_THRESHOLD_MASK, + CTRL1_FRDDR_DEPTH(fifo_depth) | + CTRL1_THRESHOLD(fifo_threshold)); + + return 0; +} + +static void axg_frddr_dai_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai); + + clk_disable_unprepare(fifo->pclk); +} + +static int axg_frddr_pcm_new(struct snd_soc_pcm_runtime *rtd, + struct snd_soc_dai *dai) +{ + return axg_fifo_pcm_new(rtd, SNDRV_PCM_STREAM_PLAYBACK); +} + +static const struct snd_soc_dai_ops axg_frddr_ops = { + .startup = axg_frddr_dai_startup, + .shutdown = axg_frddr_dai_shutdown, +}; + +static struct snd_soc_dai_driver axg_frddr_dai_drv = { + .name = "FRDDR", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = AXG_FIFO_CH_MAX, + .rates = AXG_FIFO_RATES, + .formats = AXG_FIFO_FORMATS, + }, + .ops = &axg_frddr_ops, + .pcm_new = axg_frddr_pcm_new, +}; + +static const char * const axg_frddr_sel_texts[] = { + "OUT 0", "OUT 1", "OUT 2", "OUT 3" +}; + +static SOC_ENUM_SINGLE_DECL(axg_frddr_sel_enum, FIFO_CTRL0, CTRL0_SEL_SHIFT, + axg_frddr_sel_texts); + +static const struct snd_kcontrol_new axg_frddr_out_demux = + SOC_DAPM_ENUM("Output Sink", axg_frddr_sel_enum); + +static const struct snd_soc_dapm_widget axg_frddr_dapm_widgets[] = { + SND_SOC_DAPM_DEMUX("SINK SEL", SND_SOC_NOPM, 0, 0, + &axg_frddr_out_demux), + SND_SOC_DAPM_AIF_OUT("OUT 0", NULL, 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_OUT("OUT 1", NULL, 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_OUT("OUT 2", NULL, 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_OUT("OUT 3", NULL, 0, SND_SOC_NOPM, 0, 0), +}; + +static const struct snd_soc_dapm_route axg_frddr_dapm_routes[] = { + { "SINK SEL", NULL, "Playback" }, + { "OUT 0", "OUT 0", "SINK SEL" }, + { "OUT 1", "OUT 1", "SINK SEL" }, + { "OUT 2", "OUT 2", "SINK SEL" }, + { "OUT 3", "OUT 3", "SINK SEL" }, +}; + +static const struct snd_soc_component_driver axg_frddr_component_drv = { + .dapm_widgets = axg_frddr_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(axg_frddr_dapm_widgets), + .dapm_routes = axg_frddr_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(axg_frddr_dapm_routes), + .ops = &axg_fifo_pcm_ops +}; + +static const struct axg_fifo_match_data axg_frddr_match_data = { + .component_drv = &axg_frddr_component_drv, + .dai_drv = &axg_frddr_dai_drv +}; + +static const struct of_device_id axg_frddr_of_match[] = { + { + .compatible = "amlogic,axg-frddr", + .data = &axg_frddr_match_data, + }, {} +}; +MODULE_DEVICE_TABLE(of, axg_frddr_of_match); + +static struct platform_driver axg_frddr_pdrv = { + .probe = axg_fifo_probe, + .driver = { + .name = "axg-frddr", + .of_match_table = axg_frddr_of_match, + }, +}; +module_platform_driver(axg_frddr_pdrv); + +MODULE_DESCRIPTION("Amlogic AXG playback fifo driver"); +MODULE_AUTHOR("Jerome Brunet "); +MODULE_LICENSE("GPL v2");