From patchwork Wed Dec 4 12:00:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shengjiu Wang X-Patchwork-Id: 180790 Delivered-To: patch@linaro.org Received: by 2002:a92:3001:0:0:0:0:0 with SMTP id x1csp510377ile; Wed, 4 Dec 2019 04:03:02 -0800 (PST) X-Google-Smtp-Source: APXvYqwEwzc0AnWybs9SOfCnCXcLTonJZzANz3q73MEyzpj1l+HkzFOlwMztdZtoQCvRQu3SCzMf X-Received: by 2002:a05:6830:1e81:: with SMTP id n1mr2087121otr.53.1575460981973; Wed, 04 Dec 2019 04:03:01 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1575460981; cv=none; d=google.com; s=arc-20160816; b=o9yaXglNkclKOUc+Cgz8XK/W5TAhYaMivIEo70QsZP7btNJqiE6tIMldz+RLku1j8K iQ+tTTPDPa/yZ3JuxfPhkhynIca0ixMmhFLZZTV6G7k6DXOVtQQm32VUjKqjIrLoffhr i+koAJc+HLibjg/qZ+HfRRGZ5iqO8yBmMHfpiuOJALxXQPYYkaHR0Vo6G6mYPuNWYR3C vmBEV6A5nknCH4KNwVY6vxxkJV429LGCb0ceIPJZY46ABLdtqmILrDuo1c0ZeVrFpKPi D5rQP4Rx7KZMhsl2lLIUPqkJ+R4U/7q7/UjXWe67hjRSDtrqQ9zg+gjADsktI2P73/pV RTvg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:references :in-reply-to:message-id:date:subject:cc:to:from; bh=ynwk9naMzB674CZuT+ESbecK39BNFKam3rr5HzXYBV8=; b=K3fVxrtmXq0Unme0v6VGg6SmB8fOZSAtynuj8JZ1tyVdPW3uatYCKzKU+FLNz/Ec7T 8yqoqgE1ZLgpCJPqizzkzw4lRVfLeFOjAYTIN6oHGp1JDxLItYKbpTt6pc2I/QM4cX3x 9KkdCvdnf3+U7UDyT80PoiQAg2i+1Ea4TczXGXjUCcuoqMAu/ZQBg4ioqr6DpaJZkLCo hvUbZ9F0352wEzjbMRh8VXAGH97IrG14xR6piTUVc4vBwVNIe2tI7nM3M4oH/IXebjoL oahbJoxxjhCIl6VwRTIgVSFGTqe8JcvL/OYQnKdD2QZ2pnwB4Pab3VICDW1U+eWcz5Kj hhFQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-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. [209.132.180.67]) by mx.google.com with ESMTP id p131si3103124oib.65.2019.12.04.04.02.52; Wed, 04 Dec 2019 04:03:01 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-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 S1727800AbfLDMCo (ORCPT + 27 others); Wed, 4 Dec 2019 07:02:44 -0500 Received: from inva020.nxp.com ([92.121.34.13]:52816 "EHLO inva020.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727472AbfLDMCm (ORCPT ); Wed, 4 Dec 2019 07:02:42 -0500 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 63A8F1A047C; Wed, 4 Dec 2019 13:02:38 +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 20B011A0474; Wed, 4 Dec 2019 13:02:32 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 70DB7402BC; Wed, 4 Dec 2019 20:02:24 +0800 (SGT) From: Shengjiu Wang To: timur@kernel.org, nicoleotsuka@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, broonie@kernel.org, alsa-devel@alsa-project.org, lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 2/2] ASoC: fsl_asrc: Add support for imx8qm & imx8qxp Date: Wed, 4 Dec 2019 20:00:19 +0800 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: 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 There are two asrc module in imx8qm & imx8qxp, each module has different clock configuration, and the DMA type is EDMA. So in this patch, we define the new clocks, refine the clock map, and include struct fsl_asrc_soc_data for different soc usage. The EDMA channel is fixed with each dma request, one dma request corresponding to one dma channel. So we need to request dma channel with dma request of asrc module. Signed-off-by: Shengjiu Wang Acked-by: Nicolin Chen --- changes in v2 - use !use_edma to wrap code in fsl_asrc_dma - add Acked-by: Nicolin Chen changes in v3 - remove the acked-by for commit is updated - read "fsl,asrc-clk-map" property, and update table clk_map_imx8qm. changes in v4 - Add table clk_map_imx8qxp - add Acked-by: Nicolin Chen changes in v5 - none sound/soc/fsl/fsl_asrc.c | 125 +++++++++++++++++++++++++++++------ sound/soc/fsl/fsl_asrc.h | 64 +++++++++++++++++- sound/soc/fsl/fsl_asrc_dma.c | 39 +++++++---- 3 files changed, 193 insertions(+), 35 deletions(-) -- 2.21.0 diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c index a3cfceea7d2f..0dcebc24c312 100644 --- a/sound/soc/fsl/fsl_asrc.c +++ b/sound/soc/fsl/fsl_asrc.c @@ -41,26 +41,65 @@ static struct snd_pcm_hw_constraint_list fsl_asrc_rate_constraints = { * The following tables map the relationship between asrc_inclk/asrc_outclk in * fsl_asrc.h and the registers of ASRCSR */ -static unsigned char input_clk_map_imx35[] = { +static unsigned char input_clk_map_imx35[ASRC_CLK_MAP_LEN] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, }; -static unsigned char output_clk_map_imx35[] = { +static unsigned char output_clk_map_imx35[ASRC_CLK_MAP_LEN] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, }; /* i.MX53 uses the same map for input and output */ -static unsigned char input_clk_map_imx53[] = { +static unsigned char input_clk_map_imx53[ASRC_CLK_MAP_LEN] = { /* 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xa 0xb 0xc 0xd 0xe 0xf */ 0x0, 0x1, 0x2, 0x7, 0x4, 0x5, 0x6, 0x3, 0x8, 0x9, 0xa, 0xb, 0xc, 0xf, 0xe, 0xd, + 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, + 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, }; -static unsigned char output_clk_map_imx53[] = { +static unsigned char output_clk_map_imx53[ASRC_CLK_MAP_LEN] = { /* 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9 0xa 0xb 0xc 0xd 0xe 0xf */ 0x8, 0x9, 0xa, 0x7, 0xc, 0x5, 0x6, 0xb, 0x0, 0x1, 0x2, 0x3, 0x4, 0xf, 0xe, 0xd, + 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, + 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, }; -static unsigned char *clk_map[2]; +/** + * i.MX8QM/i.MX8QXP uses the same map for input and output. + * clk_map_imx8qm[0] is for i.MX8QM asrc0 + * clk_map_imx8qm[1] is for i.MX8QM asrc1 + * clk_map_imx8qxp[0] is for i.MX8QXP asrc0 + * clk_map_imx8qxp[1] is for i.MX8QXP asrc1 + */ +static unsigned char clk_map_imx8qm[2][ASRC_CLK_MAP_LEN] = { + { + 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0, + 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, + 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, + }, + { + 0xf, 0xf, 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0, + 0x0, 0x1, 0x2, 0x3, 0xb, 0xc, 0xf, 0xf, 0xd, 0xe, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, + 0x4, 0x5, 0x6, 0xf, 0x8, 0x9, 0xa, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, + }, +}; + +static unsigned char clk_map_imx8qxp[2][ASRC_CLK_MAP_LEN] = { + { + 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0, + 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0xf, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xf, 0xf, + 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, + }, + { + 0xf, 0xf, 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0, + 0x0, 0x1, 0x2, 0x3, 0x7, 0x8, 0xf, 0xf, 0x9, 0xa, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, + 0xf, 0xf, 0x6, 0xf, 0xf, 0xf, 0xa, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, + }, +}; /** * Select the pre-processing and post-processing options @@ -353,8 +392,8 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair, bool use_ideal_rate) } /* Validate input and output clock sources */ - clk_index[IN] = clk_map[IN][config->inclk]; - clk_index[OUT] = clk_map[OUT][config->outclk]; + clk_index[IN] = asrc_priv->clk_map[IN][config->inclk]; + clk_index[OUT] = asrc_priv->clk_map[OUT][config->outclk]; /* We only have output clock for ideal ratio mode */ clk = asrc_priv->asrck_clk[clk_index[ideal ? OUT : IN]]; @@ -398,13 +437,13 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair, bool use_ideal_rate) /* Set the channel number */ channels = config->channel_num; - if (asrc_priv->channel_bits < 4) + if (asrc_priv->soc->channel_bits < 4) channels /= 2; /* Update channels for current pair */ regmap_update_bits(asrc_priv->regmap, REG_ASRCNCR, - ASRCNCR_ANCi_MASK(index, asrc_priv->channel_bits), - ASRCNCR_ANCi(index, channels, asrc_priv->channel_bits)); + ASRCNCR_ANCi_MASK(index, asrc_priv->soc->channel_bits), + ASRCNCR_ANCi(index, channels, asrc_priv->soc->channel_bits)); /* Default setting: Automatic selection for processing mode */ regmap_update_bits(asrc_priv->regmap, REG_ASRCTR, @@ -531,7 +570,7 @@ static int fsl_asrc_dai_startup(struct snd_pcm_substream *substream, struct fsl_asrc *asrc_priv = snd_soc_dai_get_drvdata(dai); /* Odd channel number is not valid for older ASRC (channel_bits==3) */ - if (asrc_priv->channel_bits == 3) + if (asrc_priv->soc->channel_bits == 3) snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 2); @@ -905,6 +944,7 @@ static int fsl_asrc_probe(struct platform_device *pdev) struct resource *res; void __iomem *regs; int irq, ret, i; + u32 map_idx; char tmp[16]; asrc_priv = devm_kzalloc(&pdev->dev, sizeof(*asrc_priv), GFP_KERNEL); @@ -964,14 +1004,37 @@ static int fsl_asrc_probe(struct platform_device *pdev) } } + asrc_priv->soc = of_device_get_match_data(&pdev->dev); + if (!asrc_priv->soc) { + dev_err(&pdev->dev, "failed to get soc data\n"); + return -ENODEV; + } + if (of_device_is_compatible(np, "fsl,imx35-asrc")) { - asrc_priv->channel_bits = 3; - clk_map[IN] = input_clk_map_imx35; - clk_map[OUT] = output_clk_map_imx35; - } else { - asrc_priv->channel_bits = 4; - clk_map[IN] = input_clk_map_imx53; - clk_map[OUT] = output_clk_map_imx53; + asrc_priv->clk_map[IN] = input_clk_map_imx35; + asrc_priv->clk_map[OUT] = output_clk_map_imx35; + } else if (of_device_is_compatible(np, "fsl,imx53-asrc")) { + asrc_priv->clk_map[IN] = input_clk_map_imx53; + asrc_priv->clk_map[OUT] = output_clk_map_imx53; + } else if (of_device_is_compatible(np, "fsl,imx8qm-asrc") || + of_device_is_compatible(np, "fsl,imx8qxp-asrc")) { + ret = of_property_read_u32(np, "fsl,asrc-clk-map", &map_idx); + if (ret) { + dev_err(&pdev->dev, "failed to get clk map index\n"); + return ret; + } + + if (map_idx > 1) { + dev_err(&pdev->dev, "unsupported clk map index\n"); + return -EINVAL; + } + if (of_device_is_compatible(np, "fsl,imx8qm-asrc")) { + asrc_priv->clk_map[IN] = clk_map_imx8qm[map_idx]; + asrc_priv->clk_map[OUT] = clk_map_imx8qm[map_idx]; + } else { + asrc_priv->clk_map[IN] = clk_map_imx8qxp[map_idx]; + asrc_priv->clk_map[OUT] = clk_map_imx8qxp[map_idx]; + } } ret = fsl_asrc_init(asrc_priv); @@ -1113,9 +1176,31 @@ static const struct dev_pm_ops fsl_asrc_pm = { SET_SYSTEM_SLEEP_PM_OPS(fsl_asrc_suspend, fsl_asrc_resume) }; +static const struct fsl_asrc_soc_data fsl_asrc_imx35_data = { + .use_edma = false, + .channel_bits = 3, +}; + +static const struct fsl_asrc_soc_data fsl_asrc_imx53_data = { + .use_edma = false, + .channel_bits = 4, +}; + +static const struct fsl_asrc_soc_data fsl_asrc_imx8qm_data = { + .use_edma = true, + .channel_bits = 4, +}; + +static const struct fsl_asrc_soc_data fsl_asrc_imx8qxp_data = { + .use_edma = true, + .channel_bits = 4, +}; + static const struct of_device_id fsl_asrc_ids[] = { - { .compatible = "fsl,imx35-asrc", }, - { .compatible = "fsl,imx53-asrc", }, + { .compatible = "fsl,imx35-asrc", .data = &fsl_asrc_imx35_data }, + { .compatible = "fsl,imx53-asrc", .data = &fsl_asrc_imx53_data }, + { .compatible = "fsl,imx8qm-asrc", .data = &fsl_asrc_imx8qm_data }, + { .compatible = "fsl,imx8qxp-asrc", .data = &fsl_asrc_imx8qxp_data }, {} }; MODULE_DEVICE_TABLE(of, fsl_asrc_ids); diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h index 2b57e8c53728..8a821132d9d0 100644 --- a/sound/soc/fsl/fsl_asrc.h +++ b/sound/soc/fsl/fsl_asrc.h @@ -308,6 +308,29 @@ enum asrc_inclk { INCLK_SSI3_TX = 0x0b, INCLK_SPDIF_TX = 0x0c, INCLK_ASRCK1_CLK = 0x0f, + + /* clocks for imx8 */ + INCLK_AUD_PLL_DIV_CLK0 = 0x10, + INCLK_AUD_PLL_DIV_CLK1 = 0x11, + INCLK_AUD_CLK0 = 0x12, + INCLK_AUD_CLK1 = 0x13, + INCLK_ESAI0_RX_CLK = 0x14, + INCLK_ESAI0_TX_CLK = 0x15, + INCLK_SPDIF0_RX = 0x16, + INCLK_SPDIF1_RX = 0x17, + INCLK_SAI0_RX_BCLK = 0x18, + INCLK_SAI0_TX_BCLK = 0x19, + INCLK_SAI1_RX_BCLK = 0x1a, + INCLK_SAI1_TX_BCLK = 0x1b, + INCLK_SAI2_RX_BCLK = 0x1c, + INCLK_SAI3_RX_BCLK = 0x1d, + INCLK_ASRC0_MUX_CLK = 0x1e, + + INCLK_ESAI1_RX_CLK = 0x20, + INCLK_ESAI1_TX_CLK = 0x21, + INCLK_SAI6_TX_BCLK = 0x22, + INCLK_HDMI_RX_SAI0_RX_BCLK = 0x24, + INCLK_HDMI_TX_SAI0_TX_BCLK = 0x25, }; enum asrc_outclk { @@ -325,9 +348,33 @@ enum asrc_outclk { OUTCLK_SSI3_RX = 0x0b, OUTCLK_SPDIF_RX = 0x0c, OUTCLK_ASRCK1_CLK = 0x0f, + + /* clocks for imx8 */ + OUTCLK_AUD_PLL_DIV_CLK0 = 0x10, + OUTCLK_AUD_PLL_DIV_CLK1 = 0x11, + OUTCLK_AUD_CLK0 = 0x12, + OUTCLK_AUD_CLK1 = 0x13, + OUTCLK_ESAI0_RX_CLK = 0x14, + OUTCLK_ESAI0_TX_CLK = 0x15, + OUTCLK_SPDIF0_RX = 0x16, + OUTCLK_SPDIF1_RX = 0x17, + OUTCLK_SAI0_RX_BCLK = 0x18, + OUTCLK_SAI0_TX_BCLK = 0x19, + OUTCLK_SAI1_RX_BCLK = 0x1a, + OUTCLK_SAI1_TX_BCLK = 0x1b, + OUTCLK_SAI2_RX_BCLK = 0x1c, + OUTCLK_SAI3_RX_BCLK = 0x1d, + OUTCLK_ASRCO_MUX_CLK = 0x1e, + + OUTCLK_ESAI1_RX_CLK = 0x20, + OUTCLK_ESAI1_TX_CLK = 0x21, + OUTCLK_SAI6_TX_BCLK = 0x22, + OUTCLK_HDMI_RX_SAI0_RX_BCLK = 0x24, + OUTCLK_HDMI_TX_SAI0_TX_BCLK = 0x25, }; #define ASRC_CLK_MAX_NUM 16 +#define ASRC_CLK_MAP_LEN 0x30 enum asrc_word_width { ASRC_WIDTH_24_BIT = 0, @@ -387,6 +434,17 @@ struct dma_block { unsigned int length; }; +/** + * fsl_asrc_soc_data: soc specific data + * + * @use_edma: using edma as dma device or not + * @channel_bits: width of ASRCNCR register for each pair + */ +struct fsl_asrc_soc_data { + bool use_edma; + unsigned int channel_bits; +}; + /** * fsl_asrc_pair: ASRC Pair private data * @@ -431,8 +489,9 @@ struct fsl_asrc_pair { * @asrck_clk: clock sources to driver ASRC internal logic * @lock: spin lock for resource protection * @pair: pair pointers - * @channel_bits: width of ASRCNCR register for each pair + * @soc: soc specific data * @channel_avail: non-occupied channel numbers + * @clk_map: clock map for input/output clock * @asrc_rate: default sample rate for ASoC Back-Ends * @asrc_width: default sample width for ASoC Back-Ends * @regcache_cfg: store register value of REG_ASRCFG @@ -450,8 +509,9 @@ struct fsl_asrc { spinlock_t lock; struct fsl_asrc_pair *pair[ASRC_PAIR_MAX_NUM]; - unsigned int channel_bits; + const struct fsl_asrc_soc_data *soc; unsigned int channel_avail; + unsigned char *clk_map[2]; int asrc_rate; int asrc_width; diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c index d6146de9acd2..48486a78b7b4 100644 --- a/sound/soc/fsl/fsl_asrc_dma.c +++ b/sound/soc/fsl/fsl_asrc_dma.c @@ -197,21 +197,34 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component, dma_cap_set(DMA_SLAVE, mask); dma_cap_set(DMA_CYCLIC, mask); - /* Get DMA request of Back-End */ - tmp_chan = dma_request_slave_channel(dev_be, tx ? "tx" : "rx"); - tmp_data = tmp_chan->private; - pair->dma_data.dma_request = tmp_data->dma_request; - dma_release_channel(tmp_chan); + /* + * An EDMA DEV_TO_DEV channel is fixed and bound with DMA event of each + * peripheral, unlike SDMA channel that is allocated dynamically. So no + * need to configure dma_request and dma_request2, but get dma_chan via + * dma_request_slave_channel directly with dma name of Front-End device + */ + if (!asrc_priv->soc->use_edma) { + /* Get DMA request of Back-End */ + tmp_chan = dma_request_slave_channel(dev_be, tx ? "tx" : "rx"); + tmp_data = tmp_chan->private; + pair->dma_data.dma_request = tmp_data->dma_request; + dma_release_channel(tmp_chan); - /* Get DMA request of Front-End */ - tmp_chan = fsl_asrc_get_dma_channel(pair, dir); - tmp_data = tmp_chan->private; - pair->dma_data.dma_request2 = tmp_data->dma_request; - pair->dma_data.peripheral_type = tmp_data->peripheral_type; - pair->dma_data.priority = tmp_data->priority; - dma_release_channel(tmp_chan); + /* Get DMA request of Front-End */ + tmp_chan = fsl_asrc_get_dma_channel(pair, dir); + tmp_data = tmp_chan->private; + pair->dma_data.dma_request2 = tmp_data->dma_request; + pair->dma_data.peripheral_type = tmp_data->peripheral_type; + pair->dma_data.priority = tmp_data->priority; + dma_release_channel(tmp_chan); + + pair->dma_chan[dir] = + dma_request_channel(mask, filter, &pair->dma_data); + } else { + pair->dma_chan[dir] = + fsl_asrc_get_dma_channel(pair, dir); + } - pair->dma_chan[dir] = dma_request_channel(mask, filter, &pair->dma_data); if (!pair->dma_chan[dir]) { dev_err(dev, "failed to request DMA channel for Back-End\n"); return -EINVAL;