imx-es8328.c

  1// SPDX-License-Identifier: GPL-2.0+
  2//
  3// Copyright 2012 Freescale Semiconductor, Inc.
  4// Copyright 2012 Linaro Ltd.
  5
  6#include <linux/gpio/consumer.h>
  7#include <linux/module.h>
  8#include <linux/of.h>
  9#include <linux/of_platform.h>
 10#include <linux/i2c.h>
 11#include <sound/soc.h>
 12#include <sound/jack.h>
 13
 14#include "imx-audmux.h"
 15
 16#define DAI_NAME_SIZE	32
 17#define MUX_PORT_MAX	7
 18
 19struct imx_es8328_data {
 20	struct device *dev;
 21	struct snd_soc_dai_link dai;
 22	struct snd_soc_card card;
 23	char codec_dai_name[DAI_NAME_SIZE];
 24	char platform_name[DAI_NAME_SIZE];
 25	struct gpio_desc *jack_gpiod;
 26};
 27
 28static struct snd_soc_jack_gpio headset_jack_gpios[] = {
 29	{
 30		.name = "headset-gpio",
 31		.report = SND_JACK_HEADSET,
 32		.invert = 0,
 33		.debounce_time = 200,
 34	},
 35};
 36
 37static struct snd_soc_jack headset_jack;
 38static struct snd_soc_jack_pin headset_jack_pins[] = {
 39	{
 40		.pin = "Headphone",
 41		.mask = SND_JACK_HEADPHONE,
 42	},
 43	{
 44		.pin = "Mic Jack",
 45		.mask = SND_JACK_MICROPHONE,
 46	},
 47};
 48
 49static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
 50{
 51	struct imx_es8328_data *data = container_of(rtd->card,
 52					struct imx_es8328_data, card);
 53	int ret = 0;
 54
 55	if (data->jack_gpiod) {
 56		/* Headphone jack detection */
 57		ret = snd_soc_card_jack_new_pins(rtd->card, "Headphone",
 58						 SND_JACK_HEADSET | SND_JACK_BTN_0,
 59						 &headset_jack,
 60						 headset_jack_pins,
 61						 ARRAY_SIZE(headset_jack_pins));
 62		if (ret)
 63			return ret;
 64
 65		headset_jack_gpios[0].desc = data->jack_gpiod;
 66		ret = snd_soc_jack_add_gpios(&headset_jack,
 67					     ARRAY_SIZE(headset_jack_gpios),
 68					     headset_jack_gpios);
 69	}
 70
 71	return ret;
 72}
 73
 74static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
 75	SND_SOC_DAPM_MIC("Mic Jack", NULL),
 76	SND_SOC_DAPM_HP("Headphone", NULL),
 77	SND_SOC_DAPM_SPK("Speaker", NULL),
 78	SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
 79};
 80
 81static const struct snd_kcontrol_new imx_es8328_controls[] = {
 82	SOC_DAPM_PIN_SWITCH("Headphone"),
 83	SOC_DAPM_PIN_SWITCH("Mic Jack"),
 84};
 85
 86static int imx_es8328_probe(struct platform_device *pdev)
 87{
 88	struct device_node *np = pdev->dev.of_node;
 89	struct device_node *ssi_np = NULL, *codec_np = NULL;
 90	struct platform_device *ssi_pdev;
 91	struct imx_es8328_data *data;
 92	struct snd_soc_dai_link_component *comp;
 93	u32 int_port, ext_port;
 94	int ret;
 95	struct device *dev = &pdev->dev;
 96
 97	ret = of_property_read_u32(np, "mux-int-port", &int_port);
 98	if (ret) {
 99		dev_err(dev, "mux-int-port missing or invalid\n");
100		goto fail;
101	}
102	if (int_port > MUX_PORT_MAX || int_port == 0) {
103		dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
104			MUX_PORT_MAX);
105		ret = -EINVAL;
106		goto fail;
107	}
108
109	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
110	if (ret) {
111		dev_err(dev, "mux-ext-port missing or invalid\n");
112		goto fail;
113	}
114	if (ext_port > MUX_PORT_MAX || ext_port == 0) {
115		dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
116			MUX_PORT_MAX);
117		ret = -EINVAL;
118		goto fail;
119	}
120
121	/*
122	 * The port numbering in the hardware manual starts at 1, while
123	 * the audmux API expects it starts at 0.
124	 */
125	int_port--;
126	ext_port--;
127	ret = imx_audmux_v2_configure_port(int_port,
128			IMX_AUDMUX_V2_PTCR_SYN |
129			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
130			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
131			IMX_AUDMUX_V2_PTCR_TFSDIR |
132			IMX_AUDMUX_V2_PTCR_TCLKDIR,
133			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
134	if (ret) {
135		dev_err(dev, "audmux internal port setup failed\n");
136		return ret;
137	}
138	ret = imx_audmux_v2_configure_port(ext_port,
139			IMX_AUDMUX_V2_PTCR_SYN,
140			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
141	if (ret) {
142		dev_err(dev, "audmux external port setup failed\n");
143		return ret;
144	}
145
146	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
147	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
148	if (!ssi_np || !codec_np) {
149		dev_err(dev, "phandle missing or invalid\n");
150		ret = -EINVAL;
151		goto fail;
152	}
153
154	ssi_pdev = of_find_device_by_node(ssi_np);
155	if (!ssi_pdev) {
156		dev_err(dev, "failed to find SSI platform device\n");
157		ret = -EINVAL;
158		goto fail;
159	}
160
161	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
162	if (!data) {
163		ret = -ENOMEM;
164		goto put_device;
165	}
166
167	comp = devm_kzalloc(dev, 2 * sizeof(*comp), GFP_KERNEL);
168	if (!comp) {
169		ret = -ENOMEM;
170		goto put_device;
171	}
172
173	data->dev = dev;
174
175	data->jack_gpiod = devm_gpiod_get_optional(dev, "jack", GPIOD_IN);
176	if (IS_ERR(data->jack_gpiod)) {
177		ret = PTR_ERR(data->jack_gpiod);
178		goto put_device;
179	}
180
181	/*
182	 * CPU == Platform
183	 * platform is using soc-generic-dmaengine-pcm
184	 */
185	data->dai.cpus		=
186	data->dai.platforms	= &comp[0];
187	data->dai.codecs	= &comp[1];
188
189	data->dai.num_cpus	= 1;
190	data->dai.num_codecs	= 1;
191	data->dai.num_platforms	= 1;
192
193	data->dai.name = "hifi";
194	data->dai.stream_name = "hifi";
195	data->dai.codecs->dai_name = "es8328-hifi-analog";
196	data->dai.codecs->of_node = codec_np;
197	data->dai.cpus->of_node = ssi_np;
198	data->dai.init = &imx_es8328_dai_init;
199	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
200			    SND_SOC_DAIFMT_CBP_CFP;
201
202	data->card.dev = dev;
203	data->card.dapm_widgets = imx_es8328_dapm_widgets;
204	data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
205	data->card.controls = imx_es8328_controls;
206	data->card.num_controls = ARRAY_SIZE(imx_es8328_controls);
207	ret = snd_soc_of_parse_card_name(&data->card, "model");
208	if (ret) {
209		dev_err(dev, "Unable to parse card name\n");
210		goto put_device;
211	}
212	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
213	if (ret) {
214		dev_err(dev, "Unable to parse routing: %d\n", ret);
215		goto put_device;
216	}
217	data->card.num_links = 1;
218	data->card.owner = THIS_MODULE;
219	data->card.dai_link = &data->dai;
220
221	ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
222	if (ret) {
223		dev_err(dev, "Unable to register: %d\n", ret);
224		goto put_device;
225	}
226
227	platform_set_drvdata(pdev, data);
228put_device:
229	put_device(&ssi_pdev->dev);
230fail:
231	of_node_put(ssi_np);
232	of_node_put(codec_np);
233
234	return ret;
235}
236
237static const struct of_device_id imx_es8328_dt_ids[] = {
238	{ .compatible = "fsl,imx-audio-es8328", },
239	{ /* sentinel */ }
240};
241MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
242
243static struct platform_driver imx_es8328_driver = {
244	.driver = {
245		.name = "imx-es8328",
246		.of_match_table = imx_es8328_dt_ids,
247	},
248	.probe = imx_es8328_probe,
249};
250module_platform_driver(imx_es8328_driver);
251
252MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
253MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
254MODULE_LICENSE("GPL v2");
255MODULE_ALIAS("platform:imx-audio-es8328");