239 строки
5.9 KiB
C
239 строки
5.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// Copyright 2012 Freescale Semiconductor, Inc.
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// Copyright 2012 Linaro Ltd.
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#include <linux/gpio.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/i2c.h>
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#include <linux/of_gpio.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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#include "imx-audmux.h"
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#define DAI_NAME_SIZE 32
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#define MUX_PORT_MAX 7
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struct imx_es8328_data {
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struct device *dev;
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struct snd_soc_dai_link dai;
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struct snd_soc_card card;
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char codec_dai_name[DAI_NAME_SIZE];
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char platform_name[DAI_NAME_SIZE];
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int jack_gpio;
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};
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static struct snd_soc_jack_gpio headset_jack_gpios[] = {
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{
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.gpio = -1,
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.name = "headset-gpio",
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.report = SND_JACK_HEADSET,
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.invert = 0,
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.debounce_time = 200,
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},
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};
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static struct snd_soc_jack headset_jack;
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static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct imx_es8328_data *data = container_of(rtd->card,
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struct imx_es8328_data, card);
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int ret = 0;
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/* Headphone jack detection */
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if (gpio_is_valid(data->jack_gpio)) {
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ret = snd_soc_card_jack_new(rtd->card, "Headphone",
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SND_JACK_HEADPHONE | SND_JACK_BTN_0,
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&headset_jack, NULL, 0);
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if (ret)
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return ret;
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headset_jack_gpios[0].gpio = data->jack_gpio;
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ret = snd_soc_jack_add_gpios(&headset_jack,
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ARRAY_SIZE(headset_jack_gpios),
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headset_jack_gpios);
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}
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return ret;
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}
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static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_SPK("Speaker", NULL),
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SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
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};
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static int imx_es8328_probe(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct device_node *ssi_np = NULL, *codec_np = NULL;
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struct platform_device *ssi_pdev;
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struct imx_es8328_data *data;
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struct snd_soc_dai_link_component *comp;
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u32 int_port, ext_port;
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int ret;
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struct device *dev = &pdev->dev;
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ret = of_property_read_u32(np, "mux-int-port", &int_port);
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if (ret) {
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dev_err(dev, "mux-int-port missing or invalid\n");
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goto fail;
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}
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if (int_port > MUX_PORT_MAX || int_port == 0) {
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dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
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MUX_PORT_MAX);
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goto fail;
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}
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ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
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if (ret) {
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dev_err(dev, "mux-ext-port missing or invalid\n");
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goto fail;
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}
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if (ext_port > MUX_PORT_MAX || ext_port == 0) {
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dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
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MUX_PORT_MAX);
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ret = -EINVAL;
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goto fail;
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}
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/*
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* The port numbering in the hardware manual starts at 1, while
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* the audmux API expects it starts at 0.
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*/
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int_port--;
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ext_port--;
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ret = imx_audmux_v2_configure_port(int_port,
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IMX_AUDMUX_V2_PTCR_SYN |
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IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
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IMX_AUDMUX_V2_PTCR_TFSDIR |
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IMX_AUDMUX_V2_PTCR_TCLKDIR,
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IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
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if (ret) {
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dev_err(dev, "audmux internal port setup failed\n");
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return ret;
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}
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ret = imx_audmux_v2_configure_port(ext_port,
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IMX_AUDMUX_V2_PTCR_SYN,
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IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
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if (ret) {
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dev_err(dev, "audmux external port setup failed\n");
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return ret;
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}
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ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
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codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
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if (!ssi_np || !codec_np) {
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dev_err(dev, "phandle missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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ssi_pdev = of_find_device_by_node(ssi_np);
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if (!ssi_pdev) {
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dev_err(dev, "failed to find SSI platform device\n");
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ret = -EINVAL;
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goto fail;
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}
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data = devm_kzalloc(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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comp = devm_kzalloc(dev, 3 * sizeof(*comp), GFP_KERNEL);
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if (!comp) {
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ret = -ENOMEM;
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goto fail;
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}
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data->dev = dev;
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data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
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data->dai.cpus = &comp[0];
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data->dai.codecs = &comp[1];
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data->dai.platforms = &comp[2];
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data->dai.num_cpus = 1;
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data->dai.num_codecs = 1;
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data->dai.num_platforms = 1;
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data->dai.name = "hifi";
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data->dai.stream_name = "hifi";
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data->dai.codecs->dai_name = "es8328-hifi-analog";
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data->dai.codecs->of_node = codec_np;
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data->dai.cpus->of_node = ssi_np;
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data->dai.platforms->of_node = ssi_np;
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data->dai.init = &imx_es8328_dai_init;
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data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM;
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data->card.dev = dev;
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data->card.dapm_widgets = imx_es8328_dapm_widgets;
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data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
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ret = snd_soc_of_parse_card_name(&data->card, "model");
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if (ret) {
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dev_err(dev, "Unable to parse card name\n");
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goto fail;
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}
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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(dev, "Unable to parse routing: %d\n", ret);
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goto fail;
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}
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data->card.num_links = 1;
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data->card.owner = THIS_MODULE;
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data->card.dai_link = &data->dai;
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ret = snd_soc_register_card(&data->card);
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if (ret) {
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dev_err(dev, "Unable to register: %d\n", ret);
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goto fail;
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}
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platform_set_drvdata(pdev, data);
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fail:
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of_node_put(ssi_np);
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of_node_put(codec_np);
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return ret;
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}
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static int imx_es8328_remove(struct platform_device *pdev)
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{
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struct imx_es8328_data *data = platform_get_drvdata(pdev);
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snd_soc_unregister_card(&data->card);
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return 0;
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}
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static const struct of_device_id imx_es8328_dt_ids[] = {
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{ .compatible = "fsl,imx-audio-es8328", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
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static struct platform_driver imx_es8328_driver = {
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.driver = {
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.name = "imx-es8328",
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.of_match_table = imx_es8328_dt_ids,
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},
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.probe = imx_es8328_probe,
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.remove = imx_es8328_remove,
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};
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module_platform_driver(imx_es8328_driver);
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MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
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MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:imx-audio-es8328");
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