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
19 struct 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
28 static 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
37 static struct snd_soc_jack headset_jack;
38 static 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
49 static 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
74 static 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
81 static const struct snd_kcontrol_new imx_es8328_controls[] = {
82 SOC_DAPM_PIN_SWITCH("Headphone"),
83 SOC_DAPM_PIN_SWITCH("Mic Jack"),
84 };
85
86 static 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);
228 put_device:
229 put_device(&ssi_pdev->dev);
230 fail:
231 of_node_put(ssi_np);
232 of_node_put(codec_np);
233
234 return ret;
235 }
236
237 static const struct of_device_id imx_es8328_dt_ids[] = {
238 { .compatible = "fsl,imx-audio-es8328", },
239 { /* sentinel */ }
240 };
241 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
242
243 static 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 };
250 module_platform_driver(imx_es8328_driver);
251
252 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
253 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
254 MODULE_LICENSE("GPL v2");
255 MODULE_ALIAS("platform:imx-audio-es8328");
256
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