From patchwork Wed Feb 26 07:22:17 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: rjying X-Patchwork-Id: 3721501 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 861BE9F2ED for ; Wed, 26 Feb 2014 07:28:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5D70D20173 for ; Wed, 26 Feb 2014 07:28:57 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id D3C8E20166 for ; Wed, 26 Feb 2014 07:28:55 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id E64D32656B9; Wed, 26 Feb 2014 08:28:54 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id A16C8265771; Wed, 26 Feb 2014 08:26:59 +0100 (CET) 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 7B06E265771; Wed, 26 Feb 2014 08:26:58 +0100 (CET) Received: from mail-pb0-f47.google.com (mail-pb0-f47.google.com [209.85.160.47]) by alsa0.perex.cz (Postfix) with ESMTP id 9EC4A265696 for ; Wed, 26 Feb 2014 08:25:29 +0100 (CET) Received: by mail-pb0-f47.google.com with SMTP id up15so605212pbc.6 for ; Tue, 25 Feb 2014 23:25:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=1TeuxtWKLi4yrknQHo5tPQCzkRInn4poVXxs3hcIZjM=; b=qCoQX0QJn9QC5u0W6VAPHJ9N/6XMp2uw9EeoNlxeovtI+uc3fYV04Ih084SAfehJ2O M+5bGD1TaDzGw3ExPXnpnI+z0u2DT/C39QH3XypUyQ2ax8UpRxEasVIU0OAZ2eyILyCU ATk12FUfyORAyQDgLsIR050kcXMmuMt/ST+CYoripy9GaQZerYqah4TQrgzT4kxIA7Xo bveDjMuqRvrf4Y6r/6c04i8Ie2Pjm2Up0qe1BvzBrL2340hM0HSDMnwmxhlpUSv4xCT1 +mu/9EHb+wAydwxAY+TYX056wzlcqLqPgTOTUUBujRHzIP+qADj0Tszg3bYWWDyl4Ar9 ooiA== X-Received: by 10.68.36.41 with SMTP id n9mr4712459pbj.99.1393399528629; Tue, 25 Feb 2014 23:25:28 -0800 (PST) Received: from localhost.localdomain ([183.192.68.118]) by mx.google.com with ESMTPSA id qh2sm290045pab.13.2014.02.25.23.25.18 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 25 Feb 2014 23:25:28 -0800 (PST) From: RongJun Ying To: Liam Girdwood , Mark Brown , rjying@gmail.com Date: Wed, 26 Feb 2014 15:22:17 +0800 Message-Id: <1393399342-31177-3-git-send-email-rongjun.ying@csr.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1393399342-31177-1-git-send-email-rongjun.ying@csr.com> References: <1393399342-31177-1-git-send-email-rongjun.ying@csr.com> Cc: Takashi Iwai , Rongjun Ying , alsa-devel@alsa-project.org, workgroup.linux@csr.com Subject: [alsa-devel] [PATCH v4-resend 2/7] ASoC: sirf: Add SiRF audio port driver is used by SiRF internal audio codec 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 From: Rongjun Ying This driver is used by SIRF internal audio codec. Use dedicated SiRF audio port TXFIFO and RXFIFO Supports two DMA channels for SiRF audio port TXFIFO and RXFIFO The audio port like as audio bus such as i2s. Signed-off-by: Rongjun Ying --- -v4: 1. Add SiRF audio port driver split from sirf-soc-inner driver. 2. Use the generic dmaengine pcm register. 3. Add binding document. 4. Use MMIO regmap. .../devicetree/bindings/sound/sirf-audio-port.txt | 20 ++ sound/soc/Kconfig | 1 + sound/soc/Makefile | 1 + sound/soc/sirf/Kconfig | 9 + sound/soc/sirf/Makefile | 3 + sound/soc/sirf/sirf-audio-port.c | 194 ++++++++++++++++++++ sound/soc/sirf/sirf-audio-port.h | 62 +++++++ 7 files changed, 290 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/sirf-audio-port.txt create mode 100644 sound/soc/sirf/Kconfig create mode 100644 sound/soc/sirf/Makefile create mode 100644 sound/soc/sirf/sirf-audio-port.c create mode 100644 sound/soc/sirf/sirf-audio-port.h diff --git a/Documentation/devicetree/bindings/sound/sirf-audio-port.txt b/Documentation/devicetree/bindings/sound/sirf-audio-port.txt new file mode 100644 index 0000000..1f66de3 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/sirf-audio-port.txt @@ -0,0 +1,20 @@ +* SiRF SoC audio port + +Required properties: +- compatible: "sirf,audio-port" +- reg: Base address and size entries: +- dmas: List of DMA controller phandle and DMA request line ordered pairs. +- dma-names: Identifier string for each DMA request line in the dmas property. + These strings correspond 1:1 with the ordered pairs in dmas. + + One of the DMA channels will be responsible for transmission (should be + named "tx") and one for reception (should be named "rx"). + +Example: + +audioport: audioport@b0040000 { + compatible = "sirf,audio-port"; + reg = <0xb0040000 0x10000>; + dmas = <&dmac1 3>, <&dmac1 8>; + dma-names = "rx", "tx"; +}; diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig index d62ce48..23946c2 100644 --- a/sound/soc/Kconfig +++ b/sound/soc/Kconfig @@ -54,6 +54,7 @@ source "sound/soc/spear/Kconfig" source "sound/soc/tegra/Kconfig" source "sound/soc/txx9/Kconfig" source "sound/soc/ux500/Kconfig" +source "sound/soc/sirf/Kconfig" # Supported codecs source "sound/soc/codecs/Kconfig" diff --git a/sound/soc/Makefile b/sound/soc/Makefile index 62a1822..f09210c 100644 --- a/sound/soc/Makefile +++ b/sound/soc/Makefile @@ -31,3 +31,4 @@ obj-$(CONFIG_SND_SOC) += spear/ obj-$(CONFIG_SND_SOC) += tegra/ obj-$(CONFIG_SND_SOC) += txx9/ obj-$(CONFIG_SND_SOC) += ux500/ +obj-$(CONFIG_SND_SOC) += sirf/ diff --git a/sound/soc/sirf/Kconfig b/sound/soc/sirf/Kconfig new file mode 100644 index 0000000..5b5407f --- /dev/null +++ b/sound/soc/sirf/Kconfig @@ -0,0 +1,9 @@ +config SND_SOC_SIRF + tristate "SoC Audio for the SiRF SoC chips" + depends on ARCH_SIRF || COMPILE_TEST + select SND_SOC_GENERIC_DMAENGINE_PCM + +config SND_SOC_SIRF_AUDIO_PORT + select REGMAP_MMIO + tristate + diff --git a/sound/soc/sirf/Makefile b/sound/soc/sirf/Makefile new file mode 100644 index 0000000..fb012c8 --- /dev/null +++ b/sound/soc/sirf/Makefile @@ -0,0 +1,3 @@ +snd-soc-sirf-audio-port-objs := sirf-audio-port.o + +obj-$(CONFIG_SND_SOC_SIRF_AUDIO_PORT) += snd-soc-sirf-audio-port.o diff --git a/sound/soc/sirf/sirf-audio-port.c b/sound/soc/sirf/sirf-audio-port.c new file mode 100644 index 0000000..4169b59 --- /dev/null +++ b/sound/soc/sirf/sirf-audio-port.c @@ -0,0 +1,194 @@ +/* + * SiRF Audio port driver + * + * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. + * + * Licensed under GPLv2 or later. + */ +#include +#include +#include +#include +#include + +#include "sirf-audio-port.h" + +struct sirf_audio_port { + struct regmap *regmap; + struct snd_dmaengine_dai_dma_data playback_dma_data; + struct snd_dmaengine_dai_dma_data capture_dma_data; +}; + +static inline void sirf_audio_port_tx_enable(struct sirf_audio_port *port) +{ + regmap_update_bits(port->regmap, AUDIO_PORT_IC_TXFIFO_OP, + AUDIO_FIFO_RESET, AUDIO_FIFO_RESET); + regmap_write(port->regmap, AUDIO_PORT_IC_TXFIFO_INT_MSK, 0); + regmap_write(port->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0); + regmap_update_bits(port->regmap, AUDIO_PORT_IC_TXFIFO_OP, + AUDIO_FIFO_START, AUDIO_FIFO_START); + regmap_update_bits(port->regmap, AUDIO_PORT_IC_CODEC_TX_CTRL, + IC_TX_ENABLE, IC_TX_ENABLE); +} + +static inline void sirf_audio_port_tx_disable(struct sirf_audio_port *port) +{ + regmap_write(port->regmap, AUDIO_PORT_IC_TXFIFO_OP, 0); + regmap_update_bits(port->regmap, AUDIO_PORT_IC_CODEC_TX_CTRL, + IC_TX_ENABLE, ~IC_TX_ENABLE); +} + +static inline void sirf_audio_port_rx_enable(struct sirf_audio_port *port, + int channels) +{ + regmap_update_bits(port->regmap, AUDIO_PORT_IC_RXFIFO_OP, + AUDIO_FIFO_RESET, AUDIO_FIFO_RESET); + regmap_write(port->regmap, AUDIO_PORT_IC_RXFIFO_INT_MSK, 0); + regmap_write(port->regmap, AUDIO_PORT_IC_RXFIFO_OP, 0); + regmap_update_bits(port->regmap, AUDIO_PORT_IC_RXFIFO_OP, + AUDIO_FIFO_START, AUDIO_FIFO_START); + if (channels == 1) + regmap_update_bits(port->regmap, AUDIO_PORT_IC_CODEC_RX_CTRL, + IC_RX_ENABLE_MONO, IC_RX_ENABLE_MONO); + else + regmap_update_bits(port->regmap, AUDIO_PORT_IC_CODEC_RX_CTRL, + IC_RX_ENABLE_STEREO, IC_RX_ENABLE_STEREO); +} + +static inline void sirf_audio_port_rx_disable(struct sirf_audio_port *port) +{ + regmap_update_bits(port->regmap, AUDIO_PORT_IC_CODEC_RX_CTRL, + IC_RX_ENABLE_STEREO, ~IC_RX_ENABLE_STEREO); +} + +static int sirf_audio_port_dai_probe(struct snd_soc_dai *dai) +{ + struct sirf_audio_port *port = snd_soc_dai_get_drvdata(dai); + snd_soc_dai_init_dma_data(dai, &port->playback_dma_data, + &port->capture_dma_data); + return 0; +} + +static int sirf_audio_port_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct sirf_audio_port *port = snd_soc_dai_get_drvdata(dai); + int playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (playback) + sirf_audio_port_tx_disable(port); + else + sirf_audio_port_rx_disable(port); + break; + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (playback) + sirf_audio_port_tx_enable(port); + else + sirf_audio_port_rx_enable(port, + substream->runtime->channels); + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct snd_soc_dai_ops sirf_audio_port_dai_ops = { + .trigger = sirf_audio_port_trigger, +}; + +static struct snd_soc_dai_driver sirf_audio_port_dai = { + .probe = sirf_audio_port_dai_probe, + .name = "sirf-audio-port", + .id = 0, + .playback = { + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .ops = &sirf_audio_port_dai_ops, +}; + +static const struct snd_soc_component_driver sirf_audio_port_component = { + .name = "sirf-audio-port", +}; + +static const struct regmap_config sirf_audio_port_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = AUDIO_PORT_IC_RXFIFO_INT_MSK, + .cache_type = REGCACHE_NONE, +}; + +static int sirf_audio_port_probe(struct platform_device *pdev) +{ + int ret; + struct sirf_audio_port *port; + void __iomem *base; + struct resource *mem_res; + + port = devm_kzalloc(&pdev->dev, + sizeof(struct sirf_audio_port), GFP_KERNEL); + if (!port) + return -ENOMEM; + + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem_res) { + dev_err(&pdev->dev, "no mem resource?\n"); + return -ENODEV; + } + + base = devm_ioremap(&pdev->dev, mem_res->start, + resource_size(mem_res)); + if (base == NULL) + return -ENOMEM; + + port->regmap = devm_regmap_init_mmio(&pdev->dev, base, + &sirf_audio_port_regmap_config); + if (IS_ERR(port->regmap)) + return PTR_ERR(port->regmap); + + ret = devm_snd_soc_register_component(&pdev->dev, + &sirf_audio_port_component, &sirf_audio_port_dai, 1); + if (ret) + return ret; + + platform_set_drvdata(pdev, port); + return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); +} + +static const struct of_device_id sirf_audio_port_of_match[] = { + { .compatible = "sirf,audio-port", }, + {} +}; +MODULE_DEVICE_TABLE(of, sirf_audio_port_of_match); + +static struct platform_driver sirf_audio_port_driver = { + .driver = { + .name = "sirf-audio-port", + .owner = THIS_MODULE, + .of_match_table = sirf_audio_port_of_match, + }, + .probe = sirf_audio_port_probe, +}; + +module_platform_driver(sirf_audio_port_driver); + +MODULE_DESCRIPTION("SiRF Audio Port driver"); +MODULE_AUTHOR("RongJun Ying "); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/sirf/sirf-audio-port.h b/sound/soc/sirf/sirf-audio-port.h new file mode 100644 index 0000000..f32dc54 --- /dev/null +++ b/sound/soc/sirf/sirf-audio-port.h @@ -0,0 +1,62 @@ +/* + * SiRF Audio port controllers define + * + * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. + * + * Licensed under GPLv2 or later. + */ + +#ifndef _SIRF_AUDIO_PORT_H +#define _SIRF_AUDIO_PORT_H + +#define AUDIO_PORT_TX_FIFO_LEVEL_CHECK_MASK 0x3F +#define AUDIO_PORT_TX_FIFO_SC_OFFSET 0 +#define AUDIO_PORT_TX_FIFO_LC_OFFSET 10 +#define AUDIO_PORT_TX_FIFO_HC_OFFSET 20 + +#define TX_FIFO_SC(x) (((x) & AUDIO_PORT_TX_FIFO_LEVEL_CHECK_MASK) \ + << AUDIO_PORT_TX_FIFO_SC_OFFSET) +#define TX_FIFO_LC(x) (((x) & AUDIO_PORT_TX_FIFO_LEVEL_CHECK_MASK) \ + << AUDIO_PORT_TX_FIFO_LC_OFFSET) +#define TX_FIFO_HC(x) (((x) & AUDIO_PORT_TX_FIFO_LEVEL_CHECK_MASK) \ + << AUDIO_PORT_TX_FIFO_HC_OFFSET) + +#define AUDIO_PORT_RX_FIFO_LEVEL_CHECK_MASK 0x0F +#define AUDIO_PORT_RX_FIFO_SC_OFFSET 0 +#define AUDIO_PORT_RX_FIFO_LC_OFFSET 10 +#define AUDIO_PORT_RX_FIFO_HC_OFFSET 20 + +#define RX_FIFO_SC(x) (((x) & AUDIO_PORT_RX_FIFO_LEVEL_CHECK_MASK) \ + << AUDIO_PORT_RX_FIFO_SC_OFFSET) +#define RX_FIFO_LC(x) (((x) & AUDIO_PORT_RX_FIFO_LEVEL_CHECK_MASK) \ + << AUDIO_PORT_RX_FIFO_LC_OFFSET) +#define RX_FIFO_HC(x) (((x) & AUDIO_PORT_RX_FIFO_LEVEL_CHECK_MASK) \ + << AUDIO_PORT_RX_FIFO_HC_OFFSET) +#define AUDIO_PORT_IC_CODEC_TX_CTRL (0x00F4) +#define AUDIO_PORT_IC_CODEC_RX_CTRL (0x00F8) + +#define AUDIO_PORT_IC_TXFIFO_OP (0x00FC) +#define AUDIO_PORT_IC_TXFIFO_LEV_CHK (0x0100) +#define AUDIO_PORT_IC_TXFIFO_STS (0x0104) +#define AUDIO_PORT_IC_TXFIFO_INT (0x0108) +#define AUDIO_PORT_IC_TXFIFO_INT_MSK (0x010C) + +#define AUDIO_PORT_IC_RXFIFO_OP (0x0110) +#define AUDIO_PORT_IC_RXFIFO_LEV_CHK (0x0114) +#define AUDIO_PORT_IC_RXFIFO_STS (0x0118) +#define AUDIO_PORT_IC_RXFIFO_INT (0x011C) +#define AUDIO_PORT_IC_RXFIFO_INT_MSK (0x0120) + +#define AUDIO_FIFO_START (1 << 0) +#define AUDIO_FIFO_RESET (1 << 1) + +#define AUDIO_FIFO_FULL (1 << 0) +#define AUDIO_FIFO_EMPTY (1 << 1) +#define AUDIO_FIFO_OFLOW (1 << 2) +#define AUDIO_FIFO_UFLOW (1 << 3) + +#define IC_TX_ENABLE (0x03) +#define IC_RX_ENABLE_MONO (0x01) +#define IC_RX_ENABLE_STEREO (0x03) + +#endif /*__SIRF_AUDIO_PORT_H*/