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149 lines
4.0 KiB
149 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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// Copyright 2017-2020 NXP |
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#include <linux/module.h> |
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#include <linux/of_platform.h> |
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#include <linux/of_reserved_mem.h> |
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#include <linux/i2c.h> |
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#include <linux/of_gpio.h> |
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#include <linux/slab.h> |
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#include <linux/gpio.h> |
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#include <linux/clk.h> |
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#include <sound/soc.h> |
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#include <sound/jack.h> |
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#include <sound/control.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc-dapm.h> |
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#include "imx-pcm-rpmsg.h" |
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struct imx_rpmsg { |
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struct snd_soc_dai_link dai; |
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struct snd_soc_card card; |
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}; |
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static const struct snd_soc_dapm_widget imx_rpmsg_dapm_widgets[] = { |
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SND_SOC_DAPM_HP("Headphone Jack", NULL), |
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SND_SOC_DAPM_SPK("Ext Spk", NULL), |
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SND_SOC_DAPM_MIC("Mic Jack", NULL), |
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SND_SOC_DAPM_MIC("Main MIC", NULL), |
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}; |
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static int imx_rpmsg_probe(struct platform_device *pdev) |
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{ |
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struct snd_soc_dai_link_component *dlc; |
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struct device *dev = pdev->dev.parent; |
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/* rpmsg_pdev is the platform device for the rpmsg node that probed us */ |
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struct platform_device *rpmsg_pdev = to_platform_device(dev); |
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struct device_node *np = rpmsg_pdev->dev.of_node; |
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struct of_phandle_args args; |
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struct imx_rpmsg *data; |
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int ret = 0; |
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dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL); |
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if (!dlc) |
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return -ENOMEM; |
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data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
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if (!data) { |
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ret = -ENOMEM; |
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goto fail; |
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} |
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ret = of_reserved_mem_device_init_by_idx(&pdev->dev, np, 0); |
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if (ret) |
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dev_warn(&pdev->dev, "no reserved DMA memory\n"); |
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data->dai.cpus = &dlc[0]; |
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data->dai.num_cpus = 1; |
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data->dai.platforms = &dlc[1]; |
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data->dai.num_platforms = 1; |
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data->dai.codecs = &dlc[2]; |
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data->dai.num_codecs = 1; |
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data->dai.name = "rpmsg hifi"; |
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data->dai.stream_name = "rpmsg hifi"; |
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data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | |
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SND_SOC_DAIFMT_NB_NF | |
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SND_SOC_DAIFMT_CBS_CFS; |
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/* Optional codec node */ |
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ret = of_parse_phandle_with_fixed_args(np, "audio-codec", 0, 0, &args); |
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if (ret) { |
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data->dai.codecs->dai_name = "snd-soc-dummy-dai"; |
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data->dai.codecs->name = "snd-soc-dummy"; |
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} else { |
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data->dai.codecs->of_node = args.np; |
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ret = snd_soc_get_dai_name(&args, &data->dai.codecs->dai_name); |
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if (ret) { |
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dev_err(&pdev->dev, "Unable to get codec_dai_name\n"); |
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goto fail; |
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} |
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} |
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data->dai.cpus->dai_name = dev_name(&rpmsg_pdev->dev); |
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data->dai.platforms->name = IMX_PCM_DRV_NAME; |
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data->dai.playback_only = true; |
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data->dai.capture_only = true; |
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data->card.num_links = 1; |
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data->card.dai_link = &data->dai; |
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if (of_property_read_bool(np, "fsl,rpmsg-out")) |
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data->dai.capture_only = false; |
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if (of_property_read_bool(np, "fsl,rpmsg-in")) |
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data->dai.playback_only = false; |
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if (data->dai.playback_only && data->dai.capture_only) { |
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dev_err(&pdev->dev, "no enabled rpmsg DAI link\n"); |
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ret = -EINVAL; |
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goto fail; |
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} |
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data->card.dev = &pdev->dev; |
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data->card.owner = THIS_MODULE; |
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data->card.dapm_widgets = imx_rpmsg_dapm_widgets; |
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data->card.num_dapm_widgets = ARRAY_SIZE(imx_rpmsg_dapm_widgets); |
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/* |
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* Inoder to use common api to get card name and audio routing. |
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* Use parent of_node for this device, revert it after finishing using |
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*/ |
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data->card.dev->of_node = np; |
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ret = snd_soc_of_parse_card_name(&data->card, "model"); |
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if (ret) |
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goto fail; |
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if (of_property_read_bool(np, "audio-routing")) { |
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ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); |
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if (ret) { |
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dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); |
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goto fail; |
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} |
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} |
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platform_set_drvdata(pdev, &data->card); |
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snd_soc_card_set_drvdata(&data->card, data); |
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ret = devm_snd_soc_register_card(&pdev->dev, &data->card); |
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if (ret) { |
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); |
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goto fail; |
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} |
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fail: |
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pdev->dev.of_node = NULL; |
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return ret; |
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} |
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static struct platform_driver imx_rpmsg_driver = { |
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.driver = { |
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.name = "imx-audio-rpmsg", |
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.pm = &snd_soc_pm_ops, |
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}, |
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.probe = imx_rpmsg_probe, |
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}; |
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module_platform_driver(imx_rpmsg_driver); |
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MODULE_DESCRIPTION("Freescale SoC Audio RPMSG Machine Driver"); |
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MODULE_AUTHOR("Shengjiu Wang <[email protected]>"); |
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MODULE_ALIAS("platform:imx-audio-rpmsg"); |
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MODULE_LICENSE("GPL v2");
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