diff options
Diffstat (limited to 'sound/soc/fsl/imx-rpmsg.c')
| -rw-r--r-- | sound/soc/fsl/imx-rpmsg.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c new file mode 100644 index 000000000000..7648e88bbced --- /dev/null +++ b/sound/soc/fsl/imx-rpmsg.c @@ -0,0 +1,133 @@ +/* + * Copyright (C) 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 <linux/module.h> +#include <linux/of_platform.h> +#include <linux/i2c.h> +#include <linux/of_gpio.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/clk.h> +#include <sound/soc.h> +#include <sound/jack.h> +#include <sound/control.h> +#include <sound/pcm_params.h> +#include <sound/soc-dapm.h> +#include <linux/pinctrl/consumer.h> +#include "fsl_rpmsg_i2s.h" + +struct imx_rpmsg_data { + struct snd_soc_dai_link dai[1]; + struct snd_soc_card card; +}; + +static int imx_rpmsg_probe(struct platform_device *pdev) +{ + struct device_node *cpu_np; + struct platform_device *cpu_pdev; + struct imx_rpmsg_data *data; + struct fsl_rpmsg_i2s *rpmsg_i2s; + int ret; + + 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; + } + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + 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; + } + + rpmsg_i2s = platform_get_drvdata(cpu_pdev); + + data->dai[0].name = "rpmsg hifi"; + data->dai[0].stream_name = "rpmsg hifi"; + if (rpmsg_i2s->codec_wm8960) { + data->dai[0].codec_dai_name = "rpmsg-wm8960-hifi"; + data->dai[0].codec_name = "rpmsg-audio-codec-wm8960"; + } else { + 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].platform_of_node = cpu_np; + data->dai[0].playback_only = true; + data->dai[0].capture_only = true; + data->dai[0].dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM; + data->card.num_links = 1; + data->card.dai_link = data->dai; + + if (of_property_read_bool(pdev->dev.of_node, "rpmsg-out")) + data->dai[0].capture_only = false; + + if (of_property_read_bool(pdev->dev.of_node, "rpmsg-in")) + data->dai[0].playback_only = false; + + if (data->dai[0].playback_only && data->dai[0].capture_only) { + dev_err(&pdev->dev, "no enabled rpmsg DAI link\n"); + ret = -EINVAL; + goto fail; + } + + 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); + return ret; +} + +static const struct of_device_id imx_rpmsg_dt_ids[] = { + { .compatible = "fsl,imx-audio-rpmsg", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, imx_rpmsg_dt_ids); + +static struct platform_driver imx_rpmsg_driver = { + .driver = { + .name = "imx-audio-rpmsg", + .owner = THIS_MODULE, + .pm = &snd_soc_pm_ops, + .of_match_table = imx_rpmsg_dt_ids, + }, + .probe = imx_rpmsg_probe, +}; +module_platform_driver(imx_rpmsg_driver); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("Freescale i.MX rpmsg audio ASoC machine driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:imx-rpmsg"); |