From patchwork Tue Aug 3 12:54:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 490944 Delivered-To: patch@linaro.org Received: by 2002:a05:6638:396:0:0:0:0 with SMTP id y22csp621775jap; Tue, 3 Aug 2021 05:54:46 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwgd9CuTO31WEIoNrV7Gx6oM9Wwa83QTc9gHLRJMoG3jo9jM8PFwSV1HW6O82AO2b/93aM9 X-Received: by 2002:aa7:dada:: with SMTP id x26mr25246475eds.156.1627995286781; Tue, 03 Aug 2021 05:54:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1627995286; cv=none; d=google.com; s=arc-20160816; b=Eas/HOe0+8ORtwramAKoAzzoDCAwuRChzNxC9emJfEisj5lqkN59xR+Dy3Y3DRgYIo x6sIhw3/z24BtrC2+ZE2op3M03LY6tx9UCfdXcNin9wD6J1EogdDNrXxmJHO7rt3YmnP O6RpIKrlc7vtp82bex4PSXq2yEC9CaajKiBLmT3HqYsxmozIdSGIgBUuSl/Nu1cHRFoD Xq9gdB24vzsvPZ6SZJi066iJFbrxwIVCr9tNqjIMNBcAxRMg03fjDChvc43sp9mNon11 ksswTRAsvDYlEGnIO4rbkhVVx/wf8UbYMpFf+S0jRxAUy35o+evY46qdqVkr5iKp6oZE Lh2A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=dnxIf2garcynrw65BP0C+FovPiZi/HWK1IhSQHSOY70=; b=gVsgaPMSWZuqv5fKit+qxPnI53qiUntbygPso+YvTg+89KuGcFnnIKuC70a5QTBkbC evIw+7w4odknCxp2IujE5sIIB+0ui3Rfi8M0n/kU2WdAYQ7f4ZdWzjeuyWi/L41yYqIr odb0tpMM3/axyO+I/3mkDqDo/USgeKt/BWBikA7ZJiko1wYu03Z7srevKdX6Is5eGDnv 8bmksNmGRSGj2NWKTMcoFa+OnoNIjYY28jrKdDaPnFNz9svyM9c3st3bs2mNBmE7JM+R wPKAHk+WA0f+XvnhpUk5XBlFknYG5olG0il00H/bkVClzEeZxXU56MOPGLpfPJXSpgw/ WJDA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=QJG2rvWV; 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=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id h14si13392628edq.2.2021.08.03.05.54.46; Tue, 03 Aug 2021 05:54:46 -0700 (PDT) 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; dkim=pass header.i=@linaro.org header.s=google header.b=QJG2rvWV; 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=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236027AbhHCMy4 (ORCPT + 7 others); Tue, 3 Aug 2021 08:54:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236065AbhHCMyz (ORCPT ); Tue, 3 Aug 2021 08:54:55 -0400 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6CF5C0613D5 for ; Tue, 3 Aug 2021 05:54:43 -0700 (PDT) Received: by mail-wr1-x431.google.com with SMTP id h13so11740647wrp.1 for ; Tue, 03 Aug 2021 05:54:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dnxIf2garcynrw65BP0C+FovPiZi/HWK1IhSQHSOY70=; b=QJG2rvWVVwrCVvnsg2tbQp+YHVlBrNT7zIDxfPm6ymvv2JoFOPnwCx+dMWUMcqSnYw 9SH2TPE/F9BVICmHnkdoEJHXHgZE9GS7vFttIF07DHskXu0vb7HXOltSEGs2ZKmJWv2B ymjbKjdqViwf+3uiW/dJOrIt4zFoQH+80ctomYQX7a8tH+vB+SrrtBKVIq+fqhs0FuLt wNW/mxzu2nj9t332FQ+JKiFhLK52WMmrADYZME2gVEORJfkiUlP1zn9+h9xUzNPA4lBW jmYOzWPCz12t1I6fLib0ZJ0hohSP+W3FCGtteLJ3Sx9esHyjbIkLT/I/djelKPXFJP36 JZ2w== 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:mime-version:content-transfer-encoding; bh=dnxIf2garcynrw65BP0C+FovPiZi/HWK1IhSQHSOY70=; b=RlVO35QHVnkq3zKSQndoD34uxIIB4qlHxnadz/Y4hK7i2+WXZ5fb3pOLaq0Km6XmKw VTrHMiQWvUShgmzDiSXOuvMOWHWUzXpkjRvjJ53xAQFcWq9NNZlz8hDmIRA1VvwFXYvI McGJlq6mnkoumpdGwU0L5OnSUHYrL+uIPgj+j4ra1MxUEZMXUN/R/rEVirB62BruE1Pq nMw1HiWeYX04HUP2I3hZXVNUA/RQz1rgsNG98gRgOgq4Yk9Sq+IPFiEl7PK/YaF22i12 FJr/4ap2Skoe0AkzWiNSlG3dGEcWBSDzzrtPbPfaF8Ax0UZt1CRs+9DsvV6H357mPw7s PlAA== X-Gm-Message-State: AOAM533MA8An0ZgbZPxAtJRL2cNFUC5NgvqCXN8XQL0uj2VK4sLxw2EO JNTTX3OdPSrUKMyhtIGvNccw0g== X-Received: by 2002:a5d:518a:: with SMTP id k10mr22923929wrv.400.1627995282347; Tue, 03 Aug 2021 05:54:42 -0700 (PDT) Received: from srini-hackbox.lan (cpc86377-aztw32-2-0-cust226.18-1.cable.virginm.net. [92.233.226.227]) by smtp.gmail.com with ESMTPSA id h14sm14695574wrp.55.2021.08.03.05.54.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Aug 2021 05:54:41 -0700 (PDT) From: Srinivas Kandagatla To: bjorn.andersson@linaro.org, broonie@kernel.org, robh@kernel.org Cc: plai@codeaurora.org, tiwai@suse.de, devicetree@vger.kernel.org, perex@perex.cz, alsa-devel@alsa-project.org, lgirdwood@gmail.com, bgoswami@codeaurora.org, Srinivas Kandagatla Subject: [PATCH v3 17/20] ASoC: qdsp6: audioreach: add q6apm-dai support Date: Tue, 3 Aug 2021 13:54:08 +0100 Message-Id: <20210803125411.28066-18-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20210803125411.28066-1-srinivas.kandagatla@linaro.org> References: <20210803125411.28066-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Signed-off-by: Srinivas Kandagatla --- sound/soc/qcom/Kconfig | 4 + sound/soc/qcom/qdsp6/Makefile | 2 + sound/soc/qcom/qdsp6/q6apm-dai.c | 504 +++++++++++++++++++++++++++++++ 3 files changed, 510 insertions(+) create mode 100644 sound/soc/qcom/qdsp6/q6apm-dai.c -- 2.21.0 diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index b36bae955a81..4f0fbf2032cc 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -103,10 +103,14 @@ config SND_SOC_QDSP6 audio drivers. This includes q6asm, q6adm, q6afe interfaces to DSP using apr. +config SND_SOC_QDSP6_APM_DAI + tristate + config SND_SOC_QDSP6_AUDIOREACH tristate "SoC ALSA audio drives for Qualcomm QDSP AUDIOREACH Framework" depends on QCOM_GPR select SND_SOC_TOPOLOGY + select SND_SOC_QDSP6_APM_DAI help To add support for Qualcomm QDSP6 AudioReach Audio Framework. This will enable sound soc platform specific audio drivers. diff --git a/sound/soc/qcom/qdsp6/Makefile b/sound/soc/qcom/qdsp6/Makefile index 15f9cc453efb..3e93911d04fa 100644 --- a/sound/soc/qcom/qdsp6/Makefile +++ b/sound/soc/qcom/qdsp6/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only snd-ar-objs := audioreach.o q6apm.o topology.o +snd-apm-dai-objs := q6apm-dai.o snd-afe-dai-objs += q6dsp-audio-ports.o q6afe-dai.o snd-afe-clks-objs := q6dsp-audio-clocks.o q6afe-clocks.o @@ -15,3 +16,4 @@ obj-$(CONFIG_SND_SOC_QDSP6_ASM) += q6asm.o obj-$(CONFIG_SND_SOC_QDSP6_ASM_DAI) += q6asm-dai.o obj-$(CONFIG_SND_SOC_QDSP6_AUDIOREACH) += snd-ar.o +obj-$(CONFIG_SND_SOC_QDSP6_APM_DAI) += snd-apm-dai.o diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-dai.c new file mode 100644 index 000000000000..be6dc6232290 --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6apm-dai.c @@ -0,0 +1,504 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2021, Linaro Limited + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "q6apm.h" + +#define DRV_NAME "q6apm-dai" + +#define PLAYBACK_MIN_NUM_PERIODS 2 +#define PLAYBACK_MAX_NUM_PERIODS 8 +#define PLAYBACK_MAX_PERIOD_SIZE 65536 +#define PLAYBACK_MIN_PERIOD_SIZE 128 +#define CAPTURE_MIN_NUM_PERIODS 2 +#define CAPTURE_MAX_NUM_PERIODS 8 +#define CAPTURE_MAX_PERIOD_SIZE 4096 +#define CAPTURE_MIN_PERIOD_SIZE 320 +#define BUFFER_BYTES_MAX (PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE) +#define BUFFER_BYTES_MIN (PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE) + +#define SID_MASK_DEFAULT 0xF + +enum stream_state { + Q6APM_STREAM_IDLE = 0, + Q6APM_STREAM_STOPPED, + Q6APM_STREAM_RUNNING, +}; + +struct q6apm_dai_rtd { + struct snd_pcm_substream *substream; + struct snd_compr_stream *cstream; + struct snd_compr_params codec_param; + struct snd_dma_buffer dma_buffer; + spinlock_t lock; + phys_addr_t phys; + unsigned int pcm_size; + unsigned int pcm_count; + unsigned int pcm_irq_pos; /* IRQ position */ + unsigned int periods; + unsigned int bytes_sent; + unsigned int bytes_received; + unsigned int copied_total; + uint16_t bits_per_sample; + uint16_t source; /* Encoding source bit mask */ + uint16_t session_id; + enum stream_state state; + struct q6apm_graph *graph; +}; + +struct q6apm_dai_data { + long long sid; +}; + +static struct snd_pcm_hardware q6apm_dai_hardware_capture = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME), + .formats = (SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S24_LE), + .rates = SNDRV_PCM_RATE_8000_48000, + .rate_min = 8000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 4, + .buffer_bytes_max = CAPTURE_MAX_NUM_PERIODS * + CAPTURE_MAX_PERIOD_SIZE, + .period_bytes_min = CAPTURE_MIN_PERIOD_SIZE, + .period_bytes_max = CAPTURE_MAX_PERIOD_SIZE, + .periods_min = CAPTURE_MIN_NUM_PERIODS, + .periods_max = CAPTURE_MAX_NUM_PERIODS, + .fifo_size = 0, +}; + +static struct snd_pcm_hardware q6apm_dai_hardware_playback = { + .info = (SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME), + .formats = (SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S24_LE), + .rates = SNDRV_PCM_RATE_8000_192000, + .rate_min = 8000, + .rate_max = 192000, + .channels_min = 2, + .channels_max = 8, + .buffer_bytes_max = (PLAYBACK_MAX_NUM_PERIODS * + PLAYBACK_MAX_PERIOD_SIZE), + .period_bytes_min = PLAYBACK_MIN_PERIOD_SIZE, + .period_bytes_max = PLAYBACK_MAX_PERIOD_SIZE, + .periods_min = PLAYBACK_MIN_NUM_PERIODS, + .periods_max = PLAYBACK_MAX_NUM_PERIODS, + .fifo_size = 0, +}; + +static void event_handler(uint32_t opcode, uint32_t token, + uint32_t *payload, void *priv) +{ + struct q6apm_dai_rtd *prtd = priv; + struct snd_pcm_substream *substream = prtd->substream; + + switch (opcode) { + case APM_CLIENT_EVENT_CMD_EOS_DONE: + prtd->state = Q6APM_STREAM_STOPPED; + break; + case APM_CLIENT_EVENT_DATA_WRITE_DONE: { + prtd->pcm_irq_pos += prtd->pcm_count; + snd_pcm_period_elapsed(substream); + if (prtd->state == Q6APM_STREAM_RUNNING) { + q6apm_write_async(prtd->graph, + prtd->pcm_count, 0, 0, NO_TIMESTAMP); + } + + break; + } + case APM_CLIENT_EVENT_DATA_READ_DONE: + prtd->pcm_irq_pos += prtd->pcm_count; + snd_pcm_period_elapsed(substream); + if (prtd->state == Q6APM_STREAM_RUNNING) + q6apm_read(prtd->graph); + + break; + default: + break; + } +} + +static int q6apm_dai_prepare(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + struct audioreach_module_config cfg; + struct q6apm_dai_data *pdata; + int ret; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) + return -EINVAL; + + if (!prtd || !prtd->graph) { + dev_err(component->dev, "%s: private data null or audio client freed\n", + __func__); + return -EINVAL; + } + + cfg.direction = substream->stream; + cfg.sample_rate = runtime->rate; + cfg.num_channels = runtime->channels; + cfg.bit_width = prtd->bits_per_sample; + + prtd->pcm_count = snd_pcm_lib_period_bytes(substream); + prtd->pcm_irq_pos = 0; + /* rate and channels are sent to audio driver */ + ret = q6apm_graph_media_format_shmem(prtd->graph, &cfg); + if (ret < 0) { + dev_err(component->dev, "%s: q6apm_open_write failed\n", __func__); + return ret; + } + + ret = q6apm_graph_media_format_pcm(prtd->graph, &cfg); + if (ret < 0) + pr_info("%s: CMD Format block failed\n", __func__); + + ret = q6apm_map_memory_regions(prtd->graph, + substream->stream, + prtd->phys, + (prtd->pcm_size / prtd->periods), + prtd->periods); + + if (ret < 0) { + dev_err(component->dev, "Audio Start: Buffer Allocation failed rc = %d\n", + ret); + return -ENOMEM; + } + + ret = q6apm_graph_prepare(prtd->graph); + if (ret) { + dev_err(component->dev, "Failed to prepare Graph %d\n", ret); + return ret; + } + + ret = q6apm_graph_start(prtd->graph); + if (ret) { + dev_err(component->dev, "Failed to Start Graph %d\n", ret); + return ret; + } + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + int i; + /* Queue the buffers */ + for (i = 0; i < runtime->periods; i++) + q6apm_read(prtd->graph); + + } + prtd->state = Q6APM_STREAM_RUNNING; + + return 0; +} + +static int q6apm_dai_trigger(struct snd_soc_component *component, + struct snd_pcm_substream *substream, int cmd) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + ret = q6apm_write_async(prtd->graph, prtd->pcm_count, 0, 0, NO_TIMESTAMP); + break; + case SNDRV_PCM_TRIGGER_STOP: + prtd->state = Q6APM_STREAM_STOPPED; + break; + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int q6apm_dai_open(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_pcm_runtime *soc_prtd = substream->private_data; + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_prtd, 0); + struct q6apm_dai_rtd *prtd; + struct q6apm_dai_data *pdata; + struct device *dev = component->dev; + int ret; + int graph_id; + + graph_id = cpu_dai->driver->id; + + pdata = snd_soc_component_get_drvdata(component); + if (!pdata) { + dev_err(component->dev, "Drv data not found ..\n"); + return -EINVAL; + } + + prtd = kzalloc(sizeof(*prtd), GFP_KERNEL); + if (prtd == NULL) + return -ENOMEM; + + prtd->substream = substream; + + prtd->graph = q6apm_graph_open(dev, (q6apm_cb)event_handler, + prtd, graph_id); + if (IS_ERR(prtd->graph)) { + pr_info("%s: Could not allocate memory\n", __func__); + ret = PTR_ERR(prtd->graph); + kfree(prtd); + return ret; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + runtime->hw = q6apm_dai_hardware_playback; + else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + runtime->hw = q6apm_dai_hardware_capture; + + /* Ensure that buffer size is a multiple of period size */ + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) { + dev_err(dev, "snd_pcm_hw_constraint_integer failed\n"); + return ret; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + ret = snd_pcm_hw_constraint_minmax(runtime, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, + BUFFER_BYTES_MIN, BUFFER_BYTES_MAX); + if (ret < 0) { + dev_err(dev, "constraint for buffer bytes min max ret = %d\n", + ret); + return ret; + } + } + + ret = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32); + if (ret < 0) { + dev_err(dev, "constraint for period bytes step ret = %d\n", + ret); + return ret; + } + ret = snd_pcm_hw_constraint_step(runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32); + if (ret < 0) { + dev_err(dev, "constraint for buffer bytes step ret = %d\n", + ret); + return ret; + } + + runtime->private_data = prtd; + runtime->dma_bytes = BUFFER_BYTES_MAX; + if (pdata->sid < 0) + prtd->phys = substream->dma_buffer.addr; + else + prtd->phys = substream->dma_buffer.addr | (pdata->sid << 32); + + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + + return 0; +} + +static int q6apm_dai_close(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + + if (prtd && prtd->graph) { + q6apm_graph_stop(prtd->graph); + + q6apm_unmap_memory_regions(prtd->graph, + substream->stream); + q6apm_graph_close(prtd->graph); + prtd->graph = NULL; + kfree(prtd); + runtime->private_data = NULL; + } + + return 0; +} + +static snd_pcm_uframes_t q6apm_dai_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + + if (prtd->pcm_irq_pos >= prtd->pcm_size) + prtd->pcm_irq_pos = 0; + + return bytes_to_frames(runtime, (prtd->pcm_irq_pos)); +} + +static int q6apm_dai_mmap(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct vm_area_struct *vma) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct device *dev = component->dev; + + return dma_mmap_coherent(dev, vma, + runtime->dma_area, runtime->dma_addr, + runtime->dma_bytes); +} + +static int q6apm_dai_hw_params(struct snd_soc_component *component, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct q6apm_dai_rtd *prtd = runtime->private_data; + + prtd->pcm_size = params_buffer_bytes(params); + prtd->periods = params_periods(params); + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + prtd->bits_per_sample = 16; + break; + case SNDRV_PCM_FORMAT_S24_LE: + prtd->bits_per_sample = 24; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int q6apm_dai_pcm_new(struct snd_soc_component *component, + struct snd_soc_pcm_runtime *rtd) +{ + struct snd_pcm_substream *psubstream, *csubstream; + struct snd_pcm *pcm = rtd->pcm; + struct device *dev; + int size, ret; + + dev = component->dev; + size = BUFFER_BYTES_MAX; + psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; + if (psubstream) { + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, + &psubstream->dma_buffer); + if (ret) { + dev_err(dev, "Cannot allocate buffer(s)\n"); + return ret; + } + } + + csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; + if (csubstream) { + ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size, + &csubstream->dma_buffer); + if (ret) { + dev_err(dev, "Cannot allocate buffer(s)\n"); + if (psubstream) + snd_dma_free_pages(&psubstream->dma_buffer); + return ret; + } + } + + return 0; +} + +static void q6apm_dai_pcm_free(struct snd_soc_component *component, + struct snd_pcm *pcm) +{ + struct snd_pcm_substream *substream; + int i; + + if (!pcm->streams) + return; + + for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) { + substream = pcm->streams[i].substream; + if (substream) { + snd_dma_free_pages(&substream->dma_buffer); + substream->dma_buffer.area = NULL; + substream->dma_buffer.addr = 0; + } + } +} + +static const struct snd_soc_component_driver q6apm_fe_dai_component = { + .name = DRV_NAME, + .open = q6apm_dai_open, + .close = q6apm_dai_close, + .prepare = q6apm_dai_prepare, + .pcm_construct = q6apm_dai_pcm_new, + .pcm_destruct = q6apm_dai_pcm_free, + .mmap = q6apm_dai_mmap, + .hw_params = q6apm_dai_hw_params, + .pointer = q6apm_dai_pointer, + .trigger = q6apm_dai_trigger, +}; + +static int q6apm_dai_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct of_phandle_args args; + struct q6apm_dai_data *pdata; + int rc; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args); + if (rc < 0) + pdata->sid = -1; + else + pdata->sid = args.args[0] & SID_MASK_DEFAULT; + + dev_set_drvdata(dev, pdata); + + return devm_snd_soc_register_component(dev, &q6apm_fe_dai_component, + NULL, 0); +} + +static const struct of_device_id q6apm_dai_device_id[] = { + { .compatible = "qcom,q6apm-dais" }, + {}, +}; +MODULE_DEVICE_TABLE(of, q6apm_dai_device_id); + +static struct platform_driver q6apm_dai_platform_driver = { + .driver = { + .name = "q6apm-dai", + .of_match_table = of_match_ptr(q6apm_dai_device_id), + }, + .probe = q6apm_dai_probe, +}; +module_platform_driver(q6apm_dai_platform_driver); + +MODULE_DESCRIPTION("Q6APM dai driver"); +MODULE_LICENSE("GPL v2");