From 522efbcae4a9b11a7e5048ec9305448d9b8d3c3d Mon Sep 17 00:00:00 2001 From: Mihai Serban Date: Tue, 11 Jul 2017 18:24:52 +0300 Subject: MLK-15033-2: ASoC: fsl: Add machine driver for AK4458 Add machine driver for i.MX boards that have AK4458 DAC attached to SAI. Signed-off-by: Mihai Serban Signed-off-by: Shengjiu Wang [ Aisheng: clean for a new base ] Signed-off-by: Dong Aisheng --- sound/soc/fsl/imx-ak4458.c | 211 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 211 insertions(+) create mode 100644 sound/soc/fsl/imx-ak4458.c (limited to 'sound/soc/fsl/imx-ak4458.c') diff --git a/sound/soc/fsl/imx-ak4458.c b/sound/soc/fsl/imx-ak4458.c new file mode 100644 index 000000000000..34d6db6c9563 --- /dev/null +++ b/sound/soc/fsl/imx-ak4458.c @@ -0,0 +1,211 @@ +/* i.MX AK4458 audio support + * + * Copyright 2017 NXP + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct imx_ak4458_data { + struct snd_soc_card card; + int num_codec_conf; + struct snd_soc_codec_conf *codec_conf; +}; + +static struct snd_soc_dapm_widget imx_ak4458_dapm_widgets[] = { + SND_SOC_DAPM_LINE("Line Out", NULL), +}; + +static int imx_aif_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 *cpu_dai = rtd->cpu_dai; + struct snd_soc_card *card = rtd->card; + struct device *dev = card->dev; + unsigned int channels = params_channels(params); + unsigned int fmt; + int ret; + int i; + + fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS; + + ret = snd_soc_dai_set_fmt(cpu_dai, fmt); + if (ret) { + dev_err(dev, "failed to set cpu dai fmt: %d\n", ret); + return ret; + } + + for (i = 0; i < rtd->num_codecs; i++) { + struct snd_soc_dai *codec_dai = rtd->codec_dais[i]; + + ret = snd_soc_dai_set_fmt(codec_dai, fmt); + if (ret) { + dev_err(dev, "failed to set codec dai fmt: %d\n", ret); + return ret; + } + } + + ret = snd_soc_dai_set_tdm_slot(cpu_dai, + BIT(channels) - 1, BIT(channels) - 1, + 2, 32); + if (ret) { + dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret); + return ret; + } + + return ret; +} + +static struct snd_soc_ops imx_aif_ops = { + .hw_params = imx_aif_hw_params, +}; + +static struct snd_soc_dai_link_component ak4458_codecs[] = { + { + /* Playback */ + .dai_name = "ak4458-aif", + }, + { + /* Capture */ + .dai_name = "ak4458-aif", + }, +}; + +static struct snd_soc_dai_link imx_ak4458_dai = { + .name = "ak4458", + .stream_name = "Audio", + .codecs = ak4458_codecs, + .num_codecs = 2, + .ignore_pmdown_time = 1, + .ops = &imx_aif_ops, + .playback_only = 1, +}; + +static int imx_ak4458_probe(struct platform_device *pdev) +{ + struct imx_ak4458_data *priv; + struct device_node *cpu_np, *codec_np_0 = NULL, *codec_np_1 = NULL; + struct platform_device *cpu_pdev; + int ret; + + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + cpu_np = of_parse_phandle(pdev->dev.of_node, "audio-cpu", 0); + if (!cpu_np) { + dev_err(&pdev->dev, "audio dai phandle missing or invalid\n"); + ret = -EINVAL; + goto fail; + } + + codec_np_0 = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0); + if (!codec_np_0) { + dev_err(&pdev->dev, "audio codec phandle missing or invalid\n"); + ret = -EINVAL; + goto fail; + } + + codec_np_1 = of_parse_phandle(pdev->dev.of_node, "audio-codec", 1); + if (!codec_np_1) { + dev_err(&pdev->dev, "audio codec 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 SAI platform device\n"); + ret = -EINVAL; + goto fail; + } + + priv->num_codec_conf = 2; + priv->codec_conf = devm_kzalloc(&pdev->dev, + priv->num_codec_conf * sizeof(struct snd_soc_codec_conf), + GFP_KERNEL); + if (!priv->codec_conf) + return -ENOMEM; + + + priv->codec_conf[0].name_prefix = "0"; + priv->codec_conf[0].of_node = codec_np_0; + priv->codec_conf[1].name_prefix = "1"; + priv->codec_conf[1].of_node = codec_np_1; + + ak4458_codecs[0].of_node = codec_np_0; + ak4458_codecs[1].of_node = codec_np_1; + + imx_ak4458_dai.cpu_dai_name = dev_name(&cpu_pdev->dev); + imx_ak4458_dai.platform_of_node = cpu_np; + + priv->card.num_links = 1; + priv->card.dai_link = &imx_ak4458_dai; + priv->card.dev = &pdev->dev; + priv->card.owner = THIS_MODULE; + priv->card.dapm_widgets = imx_ak4458_dapm_widgets; + priv->card.num_dapm_widgets = ARRAY_SIZE(imx_ak4458_dapm_widgets); + priv->card.codec_conf = priv->codec_conf; + priv->card.num_configs = priv->num_codec_conf; + + ret = snd_soc_of_parse_card_name(&priv->card, "model"); + if (ret) + goto fail; + + snd_soc_card_set_drvdata(&priv->card, priv); + + ret = devm_snd_soc_register_card(&pdev->dev, &priv->card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); + goto fail; + } + + ret = 0; +fail: + if (cpu_np) + of_node_put(cpu_np); + if (codec_np_0) + of_node_put(codec_np_0); + if (codec_np_1) + of_node_put(codec_np_1); + + return ret; +} + +static const struct of_device_id imx_ak4458_dt_ids[] = { + { .compatible = "fsl,imx-audio-ak4458", }, + { }, +}; +MODULE_DEVICE_TABLE(of, imx_ak4458_dt_ids); + +static struct platform_driver imx_ak4458_driver = { + .driver = { + .name = "imx-ak4458", + .pm = &snd_soc_pm_ops, + .of_match_table = imx_ak4458_dt_ids, + }, + .probe = imx_ak4458_probe, +}; +module_platform_driver(imx_ak4458_driver); + +MODULE_AUTHOR("Mihai Serban "); +MODULE_DESCRIPTION("Freescale i.MX AK4458 ASoC machine driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:imx-ak4458"); -- cgit v1.2.3