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
20 struct 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
29 static 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
39 static struct snd_soc_jack headset_jack;
40 static 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
imx_es8328_dai_init(struct snd_soc_pcm_runtime * rtd)51 static 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
76 static 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
83 static const struct snd_kcontrol_new imx_es8328_controls[] = {
84 SOC_DAPM_PIN_SWITCH("Headphone"),
85 SOC_DAPM_PIN_SWITCH("Mic Jack"),
86 };
87
imx_es8328_probe(struct platform_device * pdev)88 static 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);
226 put_device:
227 put_device(&ssi_pdev->dev);
228 fail:
229 of_node_put(ssi_np);
230 of_node_put(codec_np);
231
232 return ret;
233 }
234
235 static const struct of_device_id imx_es8328_dt_ids[] = {
236 { .compatible = "fsl,imx-audio-es8328", },
237 { /* sentinel */ }
238 };
239 MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
240
241 static 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 };
248 module_platform_driver(imx_es8328_driver);
249
250 MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
251 MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
252 MODULE_LICENSE("GPL v2");
253 MODULE_ALIAS("platform:imx-audio-es8328");
254