From patchwork Fri Jan 8 03:12:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sit, Michael Wei Hong" X-Patchwork-Id: 12005607 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=-14.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,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 200ECC433DB for ; Fri, 8 Jan 2021 03:22:16 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 781B0236F9 for ; Fri, 8 Jan 2021 03:22:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 781B0236F9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C4E011694; Fri, 8 Jan 2021 04:21:23 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C4E011694 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1610076133; bh=d14J08UtiaFcK+gfJR4AK/82S26A6LtTmlmI+nHSKNE=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=Ju0zDH+5zh1vUcgQM16P0W2584SNW8jwWko2SvMOzyFGTAzdb0VGgrSR0BmwdE+Vz IaW8N/VOKC//o7Qu6MLVhkElDEkGuki7BIJSevASuKSJZ6/s6C0Aj2I8euihtUb5Bi 6UFRoOVqWi/WcMnIaTTXqnrqkF+ThksmyUC84yxo= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 5883BF8027D; Fri, 8 Jan 2021 04:20:35 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 138BDF8025E; Fri, 8 Jan 2021 04:20:34 +0100 (CET) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 8EE0CF800EE for ; Fri, 8 Jan 2021 04:20:23 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 8EE0CF800EE IronPort-SDR: CAOrZFAoAHRI7b/HZ/qWxyCnzt8B4TSpZnH4anNwgGCbnffU18jimf5A3he6pdaQKMzCtCb/IU GAJ89CaewucQ== X-IronPort-AV: E=McAfee;i="6000,8403,9857"; a="262303375" X-IronPort-AV: E=Sophos;i="5.79,330,1602572400"; d="scan'208";a="262303375" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jan 2021 19:20:21 -0800 IronPort-SDR: TJzWWb0vxtN5H+m9tBnl1GuMIYgtgfuHcz9qbGRe5H93i7gqeVxfrWk/HsG2KHAS5dWHGPtr7+ ID0+WPBCTNBw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,330,1602572400"; d="scan'208";a="362197257" Received: from mike-ilbpg1.png.intel.com ([10.88.227.76]) by orsmga002.jf.intel.com with ESMTP; 07 Jan 2021 19:20:18 -0800 From: Michael Sit Wei Hong To: alsa-devel@alsa-project.org Subject: [PATCH v2 2/2] ASoC: Intel: KMB: Enable DMA transfer mode Date: Fri, 8 Jan 2021 11:12:48 +0800 Message-Id: <20210108031248.20520-6-michael.wei.hong.sit@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210108031248.20520-4-michael.wei.hong.sit@intel.com> References: <20210108031248.20520-4-michael.wei.hong.sit@intel.com> Cc: cezary.rojewski@intel.com, lars@metafoo.de, tiwai@suse.com, jee.heng.sia@intel.com, pierre-louis.bossart@linux.intel.com, liam.r.girdwood@linux.intel.com, broonie@kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Enable DMA transfer mode for Intel Keem Bay ASoC platform driver. The driver will search the device tree for DMA resources at boot time to enable DMA transfer mode, and will proceed to use DMA transfer if the resource is available, otherwise the default PIO mode will be used. Signed-off-by: Michael Sit Wei Hong Reviewed-by: Pierre-Louis Bossart --- sound/soc/intel/Kconfig | 2 + sound/soc/intel/keembay/kmb_platform.c | 157 ++++++++++++++++++++++--- sound/soc/intel/keembay/kmb_platform.h | 9 ++ 3 files changed, 153 insertions(+), 15 deletions(-) diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig index 0c6404fc12b3..f3a4a907b29d 100644 --- a/sound/soc/intel/Kconfig +++ b/sound/soc/intel/Kconfig @@ -203,6 +203,8 @@ config SND_SOC_INTEL_KEEMBAY tristate "Keembay Platforms" depends on ARCH_KEEMBAY || COMPILE_TEST depends on COMMON_CLK + select SND_DMAENGINE_PCM + select SND_SOC_GENERIC_DMAENGINE_PCM help If you have a Intel Keembay platform then enable this option by saying Y or m. diff --git a/sound/soc/intel/keembay/kmb_platform.c b/sound/soc/intel/keembay/kmb_platform.c index 1c3748f33136..4961ba89c110 100644 --- a/sound/soc/intel/keembay/kmb_platform.c +++ b/sound/soc/intel/keembay/kmb_platform.c @@ -6,10 +6,12 @@ // #include +#include #include #include #include #include +#include #include #include #include @@ -343,6 +345,53 @@ static const struct snd_soc_component_driver kmb_component = { .pointer = kmb_pcm_pointer, }; +static const struct snd_soc_component_driver kmb_component_dma = { + .name = "kmb", +}; + +static int kmb_probe(struct snd_soc_dai *cpu_dai) +{ + struct kmb_i2s_info *kmb_i2s = snd_soc_dai_get_drvdata(cpu_dai); + + if (kmb_i2s->use_pio) + return 0; + + snd_soc_dai_init_dma_data(cpu_dai, &kmb_i2s->play_dma_data, + &kmb_i2s->capture_dma_data); + + return 0; +} + +static inline void kmb_i2s_enable_dma(struct kmb_i2s_info *kmb_i2s, u32 stream) +{ + u32 dma_reg; + + dma_reg = readl(kmb_i2s->i2s_base + I2S_DMACR); + /* Enable DMA handshake for stream */ + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + dma_reg |= I2S_DMAEN_TXBLOCK; + else + dma_reg |= I2S_DMAEN_RXBLOCK; + + writel(dma_reg, kmb_i2s->i2s_base + I2S_DMACR); +} + +static inline void kmb_i2s_disable_dma(struct kmb_i2s_info *kmb_i2s, u32 stream) +{ + u32 dma_reg; + + dma_reg = readl(kmb_i2s->i2s_base + I2S_DMACR); + /* Disable DMA handshake for stream */ + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + dma_reg &= ~I2S_DMAEN_TXBLOCK; + writel(1, kmb_i2s->i2s_base + I2S_RTXDMA); + } else { + dma_reg &= ~I2S_DMAEN_RXBLOCK; + writel(1, kmb_i2s->i2s_base + I2S_RRXDMA); + } + writel(dma_reg, kmb_i2s->i2s_base + I2S_DMACR); +} + static void kmb_i2s_start(struct kmb_i2s_info *kmb_i2s, struct snd_pcm_substream *substream) { @@ -356,7 +405,11 @@ static void kmb_i2s_start(struct kmb_i2s_info *kmb_i2s, else writel(1, kmb_i2s->i2s_base + IRER); - kmb_i2s_irq_trigger(kmb_i2s, substream->stream, config->chan_nr, true); + if (kmb_i2s->use_pio) + kmb_i2s_irq_trigger(kmb_i2s, substream->stream, + config->chan_nr, true); + else + kmb_i2s_enable_dma(kmb_i2s, substream->stream); if (kmb_i2s->clock_provider) writel(1, kmb_i2s->i2s_base + CER); @@ -434,7 +487,8 @@ static int kmb_dai_trigger(struct snd_pcm_substream *substream, break; case SNDRV_PCM_TRIGGER_STOP: kmb_i2s->active--; - kmb_i2s_stop(kmb_i2s, substream); + if (kmb_i2s->use_pio) + kmb_i2s_stop(kmb_i2s, substream); break; default: return -EINVAL; @@ -485,16 +539,22 @@ static int kmb_dai_hw_params(struct snd_pcm_substream *substream, config->data_width = 16; kmb_i2s->ccr = 0x00; kmb_i2s->xfer_resolution = 0x02; + kmb_i2s->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + kmb_i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; break; case SNDRV_PCM_FORMAT_S24_LE: config->data_width = 32; kmb_i2s->ccr = 0x14; kmb_i2s->xfer_resolution = 0x05; + kmb_i2s->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + kmb_i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; break; case SNDRV_PCM_FORMAT_S32_LE: config->data_width = 32; kmb_i2s->ccr = 0x10; kmb_i2s->xfer_resolution = 0x05; + kmb_i2s->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + kmb_i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; break; default: dev_err(kmb_i2s->dev, "kmb: unsupported PCM fmt"); @@ -572,9 +632,56 @@ static int kmb_dai_prepare(struct snd_pcm_substream *substream, return 0; } +static int kmb_dai_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *cpu_dai) +{ + struct kmb_i2s_info *kmb_i2s = snd_soc_dai_get_drvdata(cpu_dai); + struct snd_dmaengine_dai_dma_data *dma_data; + + if (kmb_i2s->use_pio) + return 0; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + dma_data = &kmb_i2s->play_dma_data; + else + dma_data = &kmb_i2s->capture_dma_data; + + snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); + + return 0; +} + +static int kmb_dai_hw_free(struct snd_pcm_substream *substream, + struct snd_soc_dai *cpu_dai) +{ + struct kmb_i2s_info *kmb_i2s = snd_soc_dai_get_drvdata(cpu_dai); + /* I2S Programming sequence in Keem_Bay_VPU_DB_v1.1 */ + if (kmb_i2s->use_pio) + kmb_i2s_clear_irqs(kmb_i2s, substream->stream); + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + writel(0, kmb_i2s->i2s_base + ITER); + else + writel(0, kmb_i2s->i2s_base + IRER); + + if (kmb_i2s->use_pio) + kmb_i2s_irq_trigger(kmb_i2s, substream->stream, 8, false); + else + kmb_i2s_disable_dma(kmb_i2s, substream->stream); + + if (!kmb_i2s->active) { + writel(0, kmb_i2s->i2s_base + CER); + writel(0, kmb_i2s->i2s_base + IER); + } + + return 0; +} + static struct snd_soc_dai_ops kmb_dai_ops = { + .startup = kmb_dai_startup, .trigger = kmb_dai_trigger, .hw_params = kmb_dai_hw_params, + .hw_free = kmb_dai_hw_free, .prepare = kmb_dai_prepare, .set_fmt = kmb_set_dai_fmt, }; @@ -607,6 +714,7 @@ static struct snd_soc_dai_driver intel_kmb_i2s_dai[] = { SNDRV_PCM_FMTBIT_S16_LE), }, .ops = &kmb_dai_ops, + .probe = kmb_probe, }, }; @@ -626,6 +734,7 @@ static struct snd_soc_dai_driver intel_kmb_tdm_dai[] = { SNDRV_PCM_FMTBIT_S16_LE), }, .ops = &kmb_dai_ops, + .probe = kmb_probe, }, }; @@ -637,10 +746,12 @@ static const struct of_device_id kmb_plat_of_match[] = { static int kmb_plat_dai_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; struct snd_soc_dai_driver *kmb_i2s_dai; const struct of_device_id *match; struct device *dev = &pdev->dev; struct kmb_i2s_info *kmb_i2s; + struct resource *res; int ret, irq; u32 comp1_reg; @@ -682,7 +793,7 @@ static int kmb_plat_dai_probe(struct platform_device *pdev) return PTR_ERR(kmb_i2s->clk_i2s); } - kmb_i2s->i2s_base = devm_platform_ioremap_resource(pdev, 0); + kmb_i2s->i2s_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(kmb_i2s->i2s_base)) return PTR_ERR(kmb_i2s->i2s_base); @@ -692,22 +803,38 @@ static int kmb_plat_dai_probe(struct platform_device *pdev) kmb_i2s->dev = &pdev->dev; - irq = platform_get_irq_optional(pdev, 0); - if (irq > 0) { - ret = devm_request_irq(dev, irq, kmb_i2s_irq_handler, 0, - pdev->name, kmb_i2s); - if (ret < 0) { - dev_err(dev, "failed to request irq\n"); - return ret; - } - } - comp1_reg = readl(kmb_i2s->i2s_base + I2S_COMP_PARAM_1); kmb_i2s->fifo_th = (1 << COMP1_FIFO_DEPTH(comp1_reg)) / 2; - ret = devm_snd_soc_register_component(dev, &kmb_component, - kmb_i2s_dai, 1); + kmb_i2s->use_pio = !(of_property_read_bool(np, "dmas")); + + if (kmb_i2s->use_pio) { + irq = platform_get_irq_optional(pdev, 0); + if (irq > 0) { + ret = devm_request_irq(dev, irq, kmb_i2s_irq_handler, 0, + pdev->name, kmb_i2s); + if (ret < 0) { + dev_err(dev, "failed to request irq\n"); + return ret; + } + } + ret = devm_snd_soc_register_component(dev, &kmb_component, + kmb_i2s_dai, 1); + } else { + kmb_i2s->play_dma_data.addr = res->start + I2S_TXDMA; + kmb_i2s->capture_dma_data.addr = res->start + I2S_RXDMA; + ret = snd_dmaengine_pcm_register(&pdev->dev, + NULL, 0); + if (ret) { + dev_err(&pdev->dev, "could not register dmaengine: %d\n", + ret); + return ret; + } + ret = devm_snd_soc_register_component(dev, &kmb_component_dma, + kmb_i2s_dai, 1); + } + if (ret) { dev_err(dev, "not able to register dai\n"); return ret; diff --git a/sound/soc/intel/keembay/kmb_platform.h b/sound/soc/intel/keembay/kmb_platform.h index 0c393e5916b6..67234caee814 100644 --- a/sound/soc/intel/keembay/kmb_platform.h +++ b/sound/soc/intel/keembay/kmb_platform.h @@ -12,6 +12,7 @@ #include #include #include +#include /* Register values with reference to KMB databook v1.1 */ /* common register for all channel */ @@ -103,7 +104,12 @@ #define DW_I2S_PROVIDER BIT(3) #define I2S_RXDMA 0x01C0 +#define I2S_RRXDMA 0x01C4 #define I2S_TXDMA 0x01C8 +#define I2S_RTXDMA 0x01CC +#define I2S_DMACR 0x0200 +#define I2S_DMAEN_RXBLOCK (1 << 16) +#define I2S_DMAEN_TXBLOCK (1 << 17) /* * struct i2s_clk_config_data - represent i2s clk configuration data @@ -131,6 +137,9 @@ struct kmb_i2s_info { u32 xfer_resolution; u32 fifo_th; bool clock_provider; + /* data related to DMA transfers b/w i2s and DMAC */ + struct snd_dmaengine_dai_dma_data play_dma_data; + struct snd_dmaengine_dai_dma_data capture_dma_data; struct i2s_clk_config_data config; int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);