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13#include <linux/gpio.h>
14#include <linux/module.h>
15#include <linux/of.h>
16#include <linux/of_platform.h>
17#include <linux/i2c.h>
18#include <linux/of_gpio.h>
19#include <sound/soc.h>
20#include <sound/jack.h>
21
22#include "imx-audmux.h"
23
24#define DAI_NAME_SIZE 32
25#define MUX_PORT_MAX 7
26
27struct imx_es8328_data {
28 struct device *dev;
29 struct snd_soc_dai_link dai;
30 struct snd_soc_card card;
31 char codec_dai_name[DAI_NAME_SIZE];
32 char platform_name[DAI_NAME_SIZE];
33 int jack_gpio;
34};
35
36static struct snd_soc_jack_gpio headset_jack_gpios[] = {
37 {
38 .gpio = -1,
39 .name = "headset-gpio",
40 .report = SND_JACK_HEADSET,
41 .invert = 0,
42 .debounce_time = 200,
43 },
44};
45
46static struct snd_soc_jack headset_jack;
47
48static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
49{
50 struct imx_es8328_data *data = container_of(rtd->card,
51 struct imx_es8328_data, card);
52 int ret = 0;
53
54
55 if (gpio_is_valid(data->jack_gpio)) {
56 ret = snd_soc_card_jack_new(rtd->card, "Headphone",
57 SND_JACK_HEADPHONE | SND_JACK_BTN_0,
58 &headset_jack, NULL, 0);
59 if (ret)
60 return ret;
61
62 headset_jack_gpios[0].gpio = data->jack_gpio;
63 ret = snd_soc_jack_add_gpios(&headset_jack,
64 ARRAY_SIZE(headset_jack_gpios),
65 headset_jack_gpios);
66 }
67
68 return ret;
69}
70
71static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
72 SND_SOC_DAPM_MIC("Mic Jack", NULL),
73 SND_SOC_DAPM_HP("Headphone", NULL),
74 SND_SOC_DAPM_SPK("Speaker", NULL),
75 SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
76};
77
78static int imx_es8328_probe(struct platform_device *pdev)
79{
80 struct device_node *np = pdev->dev.of_node;
81 struct device_node *ssi_np = NULL, *codec_np = NULL;
82 struct platform_device *ssi_pdev;
83 struct imx_es8328_data *data;
84 u32 int_port, ext_port;
85 int ret;
86 struct device *dev = &pdev->dev;
87
88 ret = of_property_read_u32(np, "mux-int-port", &int_port);
89 if (ret) {
90 dev_err(dev, "mux-int-port missing or invalid\n");
91 goto fail;
92 }
93 if (int_port > MUX_PORT_MAX || int_port == 0) {
94 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
95 MUX_PORT_MAX);
96 goto fail;
97 }
98
99 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
100 if (ret) {
101 dev_err(dev, "mux-ext-port missing or invalid\n");
102 goto fail;
103 }
104 if (ext_port > MUX_PORT_MAX || ext_port == 0) {
105 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
106 MUX_PORT_MAX);
107 ret = -EINVAL;
108 goto fail;
109 }
110
111
112
113
114
115 int_port--;
116 ext_port--;
117 ret = imx_audmux_v2_configure_port(int_port,
118 IMX_AUDMUX_V2_PTCR_SYN |
119 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
120 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
121 IMX_AUDMUX_V2_PTCR_TFSDIR |
122 IMX_AUDMUX_V2_PTCR_TCLKDIR,
123 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
124 if (ret) {
125 dev_err(dev, "audmux internal port setup failed\n");
126 return ret;
127 }
128 ret = imx_audmux_v2_configure_port(ext_port,
129 IMX_AUDMUX_V2_PTCR_SYN,
130 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
131 if (ret) {
132 dev_err(dev, "audmux external port setup failed\n");
133 return ret;
134 }
135
136 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
137 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
138 if (!ssi_np || !codec_np) {
139 dev_err(dev, "phandle missing or invalid\n");
140 ret = -EINVAL;
141 goto fail;
142 }
143
144 ssi_pdev = of_find_device_by_node(ssi_np);
145 if (!ssi_pdev) {
146 dev_err(dev, "failed to find SSI platform device\n");
147 ret = -EINVAL;
148 goto fail;
149 }
150
151 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
152 if (!data) {
153 ret = -ENOMEM;
154 goto fail;
155 }
156
157 data->dev = dev;
158
159 data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
160
161 data->dai.name = "hifi";
162 data->dai.stream_name = "hifi";
163 data->dai.codec_dai_name = "es8328-hifi-analog";
164 data->dai.codec_of_node = codec_np;
165 data->dai.cpu_of_node = ssi_np;
166 data->dai.platform_of_node = ssi_np;
167 data->dai.init = &imx_es8328_dai_init;
168 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
169 SND_SOC_DAIFMT_CBM_CFM;
170
171 data->card.dev = dev;
172 data->card.dapm_widgets = imx_es8328_dapm_widgets;
173 data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
174 ret = snd_soc_of_parse_card_name(&data->card, "model");
175 if (ret) {
176 dev_err(dev, "Unable to parse card name\n");
177 goto fail;
178 }
179 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
180 if (ret) {
181 dev_err(dev, "Unable to parse routing: %d\n", ret);
182 goto fail;
183 }
184 data->card.num_links = 1;
185 data->card.owner = THIS_MODULE;
186 data->card.dai_link = &data->dai;
187
188 ret = snd_soc_register_card(&data->card);
189 if (ret) {
190 dev_err(dev, "Unable to register: %d\n", ret);
191 goto fail;
192 }
193
194 platform_set_drvdata(pdev, data);
195fail:
196 of_node_put(ssi_np);
197 of_node_put(codec_np);
198
199 return ret;
200}
201
202static int imx_es8328_remove(struct platform_device *pdev)
203{
204 struct imx_es8328_data *data = platform_get_drvdata(pdev);
205
206 snd_soc_jack_free_gpios(&headset_jack, ARRAY_SIZE(headset_jack_gpios),
207 headset_jack_gpios);
208
209 snd_soc_unregister_card(&data->card);
210
211 return 0;
212}
213
214static const struct of_device_id imx_es8328_dt_ids[] = {
215 { .compatible = "fsl,imx-audio-es8328", },
216 { }
217};
218MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
219
220static struct platform_driver imx_es8328_driver = {
221 .driver = {
222 .name = "imx-es8328",
223 .of_match_table = imx_es8328_dt_ids,
224 },
225 .probe = imx_es8328_probe,
226 .remove = imx_es8328_remove,
227};
228module_platform_driver(imx_es8328_driver);
229
230MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
231MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
232MODULE_LICENSE("GPL v2");
233MODULE_ALIAS("platform:imx-audio-es8328");
234
