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[2001:56a:78ed:fb00::430]) by smtp.gmail.com with ESMTPSA id h15sm267938pfv.212.2021.11.02.17.07.44 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Nov 2021 17:07:44 -0700 (PDT) From: Alex Hung To: kernel-team@lists.ubuntu.com Subject: [PATCH 05/14][SRU][OEM-5.14] ASoC: amd: add acp6x pdm platform driver Date: Tue, 2 Nov 2021 18:07:29 -0600 Message-Id: <20211103000738.267442-6-alex.hung@canonical.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211103000738.267442-1-alex.hung@canonical.com> References: <20211103000738.267442-1-alex.hung@canonical.com> MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" From: Vijendar Mukunda BugLink: https://bugs.launchpad.net/bugs/1949245 PDM platform driver binds to the platform device created by ACP6x PCI device. PDM driver registers ALSA DMA and CPU DAI components with ASoC framework. Signed-off-by: Vijendar Mukunda Link: https://lore.kernel.org/r/20211018112044.1705805-6-Vijendar.Mukunda@amd.com Signed-off-by: Mark Brown (cherry picked from commit 7610174a5bfe6cf34eda8f972311e629ae6dc2d1 linux-next) Signed-off-by: Alex Hung --- sound/soc/amd/yc/acp6x-pdm-dma.c | 81 ++++++++++++++++++++++++++++++++++++++++ sound/soc/amd/yc/acp6x.h | 5 +++ 2 files changed, 86 insertions(+) create mode 100644 sound/soc/amd/yc/acp6x-pdm-dma.c diff --git a/sound/soc/amd/yc/acp6x-pdm-dma.c b/sound/soc/amd/yc/acp6x-pdm-dma.c new file mode 100644 index 0000000..75228ce --- /dev/null +++ b/sound/soc/amd/yc/acp6x-pdm-dma.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * AMD ALSA SoC Yellow Carp PDM Driver + * + * Copyright 2021 Advanced Micro Devices, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "acp6x.h" + +#define DRV_NAME "acp_yc_pdm_dma" + +static struct snd_soc_dai_driver acp6x_pdm_dai_driver = { + .capture = { + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S32_LE, + .channels_min = 2, + .channels_max = 2, + .rate_min = 48000, + .rate_max = 48000, + }, +}; + +static const struct snd_soc_component_driver acp6x_pdm_component = { + .name = DRV_NAME, +}; + +static int acp6x_pdm_audio_probe(struct platform_device *pdev) +{ + struct resource *res; + struct pdm_dev_data *adata; + int status; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n"); + return -ENODEV; + } + + adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL); + if (!adata) + return -ENOMEM; + + adata->acp6x_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (!adata->acp6x_base) + return -ENOMEM; + + adata->capture_stream = NULL; + + dev_set_drvdata(&pdev->dev, adata); + status = devm_snd_soc_register_component(&pdev->dev, + &acp6x_pdm_component, + &acp6x_pdm_dai_driver, 1); + if (status) { + dev_err(&pdev->dev, "Fail to register acp pdm dai\n"); + + return -ENODEV; + } + return 0; +} + +static struct platform_driver acp6x_pdm_dma_driver = { + .probe = acp6x_pdm_audio_probe, + .driver = { + .name = "acp_yc_pdm_dma", + }, +}; + +module_platform_driver(acp6x_pdm_dma_driver); + +MODULE_AUTHOR("Vijendar.Mukunda@amd.com"); +MODULE_DESCRIPTION("AMD ACP6x YC PDM Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME); diff --git a/sound/soc/amd/yc/acp6x.h b/sound/soc/amd/yc/acp6x.h index 63bdea3..d6b2c70c 100644 --- a/sound/soc/amd/yc/acp6x.h +++ b/sound/soc/amd/yc/acp6x.h @@ -45,6 +45,11 @@ enum acp_config { ACP_CONFIG_15, }; +struct pdm_dev_data { + void __iomem *acp6x_base; + struct snd_pcm_substream *capture_stream; +}; + static inline u32 acp6x_readl(void __iomem *base_addr) { return readl(base_addr - ACP6x_PHY_BASE_ADDRESS);