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