From ee01b4da5e9a77ed540113bac8711b7de5e14bde Mon Sep 17 00:00:00 2001 From: Daniel Baluta Date: Thu, 4 Oct 2018 14:46:43 +0300 Subject: MLK-18497-12: ASoC: fsl: imx-dsp: Add DSP machine driver Finally! We register DSP as a sound card. Reviewed-by: Cosmin-Gabriel Samoila Signed-off-by: Shengjiu Wang [ Aisheng: Makefile clean for a new base ] Signed-off-by: Dong Aisheng --- sound/soc/fsl/imx-dsp.c | 203 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 sound/soc/fsl/imx-dsp.c (limited to 'sound/soc/fsl/imx-dsp.c') diff --git a/sound/soc/fsl/imx-dsp.c b/sound/soc/fsl/imx-dsp.c new file mode 100644 index 000000000000..a6f5a34f8605 --- /dev/null +++ b/sound/soc/fsl/imx-dsp.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: (GPL-2.0+ +// +// DSP machine driver +// +// Copyright (c) 2012-2013 by Tensilica Inc. ALL RIGHTS RESERVED. +// Copyright 2018 NXP + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct imx_dsp_audio_data { + struct snd_soc_dai_link dai[2]; + struct snd_soc_card card; +}; + +static int imx_dsp_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + int ret; + u32 dai_format = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_LEFT_J | + SND_SOC_DAIFMT_CBS_CFS; + + ret = snd_soc_dai_set_sysclk(codec_dai, 0, + 24576000, SND_SOC_CLOCK_IN); + if (ret) { + dev_err(rtd->dev, "failed to set codec sysclk: %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_fmt(codec_dai, dai_format); + if (ret) { + dev_err(rtd->dev, "failed to set codec dai fmt: %d\n", ret); + return ret; + } + + return 0; +} + +static struct snd_soc_ops imx_dsp_ops_be = { + .hw_params = imx_dsp_hw_params, +}; + +static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) { + + struct snd_interval *rate; + struct snd_interval *channels; + struct snd_mask *mask; + + rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + rate->max = rate->min = 48000; + + channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + channels->max = channels->min = 2; + + mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + snd_mask_none(mask); + snd_mask_set(mask, SNDRV_PCM_FORMAT_S16_LE); + + return 0; +} + +static const struct snd_soc_dapm_route imx_dsp_audio_map[] = { + {"Playback", NULL, "Compress Playback"},/* dai route for be and fe */ + {"Playback", NULL, "Playback"}, +}; + +static int imx_dsp_audio_probe(struct platform_device *pdev) +{ + struct device_node *cpu_np=NULL, *codec_np=NULL, *platform_np=NULL; + struct platform_device *cpu_pdev; + struct imx_dsp_audio_data *data; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto fail; + } + + cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0); + if (!cpu_np) { + dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n"); + ret = -EINVAL; + goto fail; + } + + cpu_pdev = of_find_device_by_node(cpu_np); + if (!cpu_pdev) { + dev_err(&pdev->dev, "failed to find rpmsg platform device\n"); + ret = -EINVAL; + goto fail; + } + + codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); + if (!codec_np) { + dev_err(&pdev->dev, "phandle missing or invalid\n"); + ret = -EINVAL; + goto fail; + } + + platform_np = of_parse_phandle(pdev->dev.of_node, "audio-platform", 0); + if (!platform_np) { + dev_err(&pdev->dev, "platform missing or invalid\n"); + ret = -EINVAL; + goto fail; + } + + data->dai[0].name = "dsp hifi fe"; + data->dai[0].stream_name = "dsp hifi fe"; + data->dai[0].codec_dai_name = "snd-soc-dummy-dai"; + data->dai[0].codec_name = "snd-soc-dummy"; + data->dai[0].cpu_dai_name = dev_name(&cpu_pdev->dev); + data->dai[0].cpu_of_node = cpu_np; + data->dai[0].platform_of_node = platform_np; + data->dai[0].playback_only = true; + data->dai[0].capture_only = false; + data->dai[0].dpcm_playback = 1; + data->dai[0].dpcm_capture = 0; + data->dai[0].dynamic = 1, + data->dai[0].ignore_pmdown_time = 1, + data->dai[0].dai_fmt = SND_SOC_DAIFMT_LEFT_J | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS; + + data->dai[1].name = "dsp hifi be"; + data->dai[1].stream_name = "dsp hifi be"; + data->dai[1].codec_dai_name = "cs42888"; + data->dai[1].codec_of_node = codec_np; + data->dai[1].cpu_dai_name = "snd-soc-dummy-dai"; + data->dai[1].cpu_name = "snd-soc-dummy"; + data->dai[1].platform_name = "snd-soc-dummy"; + data->dai[1].playback_only = true; + data->dai[1].capture_only = false; + data->dai[1].dpcm_playback = 1; + data->dai[1].dpcm_capture = 0; + data->dai[1].no_pcm = 1, + data->dai[1].ignore_pmdown_time = 1, + data->dai[1].dai_fmt = SND_SOC_DAIFMT_LEFT_J | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS; + data->dai[1].ops = &imx_dsp_ops_be; + data->dai[1].be_hw_params_fixup = be_hw_params_fixup; + + data->card.dapm_routes = imx_dsp_audio_map; + data->card.num_dapm_routes = ARRAY_SIZE(imx_dsp_audio_map); + data->card.num_links = 2; + data->card.dai_link = data->dai; + + data->card.dev = &pdev->dev; + data->card.owner = THIS_MODULE; + ret = snd_soc_of_parse_card_name(&data->card, "model"); + if (ret) + goto fail; + + platform_set_drvdata(pdev, &data->card); + snd_soc_card_set_drvdata(&data->card, data); + ret = devm_snd_soc_register_card(&pdev->dev, &data->card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); + goto fail; + } + +fail: + if (cpu_np) + of_node_put(cpu_np); + if (codec_np) + of_node_put(codec_np); + if (platform_np) + of_node_put(platform_np); + return ret; +} + +static const struct of_device_id imx_dsp_audio_dt_ids[] = { + { .compatible = "fsl,imx-dsp-audio", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_dsp_audio_dt_ids); + +static struct platform_driver imx_dsp_audio_driver = { + .driver = { + .name = "imx-dsp-audio", + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + .of_match_table = imx_dsp_audio_dt_ids, + }, + .probe = imx_dsp_audio_probe, +}; +module_platform_driver(imx_dsp_audio_driver); + +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3