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;
40
41static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
42{
43	struct imx_es8328_data *data = container_of(rtd->card,
44					struct imx_es8328_data, card);
45	int ret = 0;
46
47	/* Headphone jack detection */
48	if (gpio_is_valid(data->jack_gpio)) {
49		ret = snd_soc_card_jack_new(rtd->card, "Headphone",
50					    SND_JACK_HEADPHONE | SND_JACK_BTN_0,
51					    &headset_jack, NULL, 0);
52		if (ret)
53			return ret;
54
55		headset_jack_gpios[0].gpio = data->jack_gpio;
56		ret = snd_soc_jack_add_gpios(&headset_jack,
57					     ARRAY_SIZE(headset_jack_gpios),
58					     headset_jack_gpios);
59	}
60
61	return ret;
62}
63
64static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
65	SND_SOC_DAPM_MIC("Mic Jack", NULL),
66	SND_SOC_DAPM_HP("Headphone", NULL),
67	SND_SOC_DAPM_SPK("Speaker", NULL),
68	SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
69};
70
71static int imx_es8328_probe(struct platform_device *pdev)
72{
73	struct device_node *np = pdev->dev.of_node;
74	struct device_node *ssi_np = NULL, *codec_np = NULL;
75	struct platform_device *ssi_pdev;
76	struct imx_es8328_data *data;
77	struct snd_soc_dai_link_component *comp;
78	u32 int_port, ext_port;
79	int ret;
80	struct device *dev = &pdev->dev;
81
82	ret = of_property_read_u32(np, "mux-int-port", &int_port);
83	if (ret) {
84		dev_err(dev, "mux-int-port missing or invalid\n");
85		goto fail;
86	}
87	if (int_port > MUX_PORT_MAX || int_port == 0) {
88		dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
89			MUX_PORT_MAX);
90		ret = -EINVAL;
91		goto fail;
92	}
93
94	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
95	if (ret) {
96		dev_err(dev, "mux-ext-port missing or invalid\n");
97		goto fail;
98	}
99	if (ext_port > MUX_PORT_MAX || ext_port == 0) {
100		dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
101			MUX_PORT_MAX);
102		ret = -EINVAL;
103		goto fail;
104	}
105
106	/*
107	 * The port numbering in the hardware manual starts at 1, while
108	 * the audmux API expects it starts at 0.
109	 */
110	int_port--;
111	ext_port--;
112	ret = imx_audmux_v2_configure_port(int_port,
113			IMX_AUDMUX_V2_PTCR_SYN |
114			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
115			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
116			IMX_AUDMUX_V2_PTCR_TFSDIR |
117			IMX_AUDMUX_V2_PTCR_TCLKDIR,
118			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
119	if (ret) {
120		dev_err(dev, "audmux internal port setup failed\n");
121		return ret;
122	}
123	ret = imx_audmux_v2_configure_port(ext_port,
124			IMX_AUDMUX_V2_PTCR_SYN,
125			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
126	if (ret) {
127		dev_err(dev, "audmux external port setup failed\n");
128		return ret;
129	}
130
131	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
132	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
133	if (!ssi_np || !codec_np) {
134		dev_err(dev, "phandle missing or invalid\n");
135		ret = -EINVAL;
136		goto fail;
137	}
138
139	ssi_pdev = of_find_device_by_node(ssi_np);
140	if (!ssi_pdev) {
141		dev_err(dev, "failed to find SSI platform device\n");
142		ret = -EINVAL;
143		goto fail;
144	}
145
146	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
147	if (!data) {
148		ret = -ENOMEM;
149		goto put_device;
150	}
151
152	comp = devm_kzalloc(dev, 3 * sizeof(*comp), GFP_KERNEL);
153	if (!comp) {
154		ret = -ENOMEM;
155		goto put_device;
156	}
157
158	data->dev = dev;
159
160	data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
161
162	data->dai.cpus		= &comp[0];
163	data->dai.codecs	= &comp[1];
164	data->dai.platforms	= &comp[2];
165
166	data->dai.num_cpus	= 1;
167	data->dai.num_codecs	= 1;
168	data->dai.num_platforms	= 1;
169
170	data->dai.name = "hifi";
171	data->dai.stream_name = "hifi";
172	data->dai.codecs->dai_name = "es8328-hifi-analog";
173	data->dai.codecs->of_node = codec_np;
174	data->dai.cpus->of_node = ssi_np;
175	data->dai.platforms->of_node = ssi_np;
176	data->dai.init = &imx_es8328_dai_init;
177	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
178			    SND_SOC_DAIFMT_CBM_CFM;
179
180	data->card.dev = dev;
181	data->card.dapm_widgets = imx_es8328_dapm_widgets;
182	data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
183	ret = snd_soc_of_parse_card_name(&data->card, "model");
184	if (ret) {
185		dev_err(dev, "Unable to parse card name\n");
186		goto put_device;
187	}
188	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
189	if (ret) {
190		dev_err(dev, "Unable to parse routing: %d\n", ret);
191		goto put_device;
192	}
193	data->card.num_links = 1;
194	data->card.owner = THIS_MODULE;
195	data->card.dai_link = &data->dai;
196
197	ret = snd_soc_register_card(&data->card);
198	if (ret) {
199		dev_err(dev, "Unable to register: %d\n", ret);
200		goto put_device;
201	}
202
203	platform_set_drvdata(pdev, data);
204put_device:
205	put_device(&ssi_pdev->dev);
206fail:
207	of_node_put(ssi_np);
208	of_node_put(codec_np);
209
210	return ret;
211}
212
213static int imx_es8328_remove(struct platform_device *pdev)
214{
215	struct imx_es8328_data *data = platform_get_drvdata(pdev);
216
217	snd_soc_unregister_card(&data->card);
218
219	return 0;
220}
221
222static const struct of_device_id imx_es8328_dt_ids[] = {
223	{ .compatible = "fsl,imx-audio-es8328", },
224	{ /* sentinel */ }
225};
226MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
227
228static struct platform_driver imx_es8328_driver = {
229	.driver = {
230		.name = "imx-es8328",
231		.of_match_table = imx_es8328_dt_ids,
232	},
233	.probe = imx_es8328_probe,
234	.remove = imx_es8328_remove,
235};
236module_platform_driver(imx_es8328_driver);
237
238MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
239MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
240MODULE_LICENSE("GPL v2");
241MODULE_ALIAS("platform:imx-audio-es8328");
242