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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
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 goto fail;
91 }
92
93 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
94 if (ret) {
95 dev_err(dev, "mux-ext-port missing or invalid\n");
96 goto fail;
97 }
98 if (ext_port > MUX_PORT_MAX || ext_port == 0) {
99 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
100 MUX_PORT_MAX);
101 ret = -EINVAL;
102 goto fail;
103 }
104
105
106
107
108
109 int_port--;
110 ext_port--;
111 ret = imx_audmux_v2_configure_port(int_port,
112 IMX_AUDMUX_V2_PTCR_SYN |
113 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
114 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
115 IMX_AUDMUX_V2_PTCR_TFSDIR |
116 IMX_AUDMUX_V2_PTCR_TCLKDIR,
117 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
118 if (ret) {
119 dev_err(dev, "audmux internal port setup failed\n");
120 return ret;
121 }
122 ret = imx_audmux_v2_configure_port(ext_port,
123 IMX_AUDMUX_V2_PTCR_SYN,
124 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
125 if (ret) {
126 dev_err(dev, "audmux external port setup failed\n");
127 return ret;
128 }
129
130 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
131 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
132 if (!ssi_np || !codec_np) {
133 dev_err(dev, "phandle missing or invalid\n");
134 ret = -EINVAL;
135 goto fail;
136 }
137
138 ssi_pdev = of_find_device_by_node(ssi_np);
139 if (!ssi_pdev) {
140 dev_err(dev, "failed to find SSI platform device\n");
141 ret = -EINVAL;
142 goto fail;
143 }
144
145 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
146 if (!data) {
147 ret = -ENOMEM;
148 goto fail;
149 }
150
151 comp = devm_kzalloc(dev, 3 * sizeof(*comp), GFP_KERNEL);
152 if (!comp) {
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.cpus = &comp[0];
162 data->dai.codecs = &comp[1];
163 data->dai.platforms = &comp[2];
164
165 data->dai.num_cpus = 1;
166 data->dai.num_codecs = 1;
167 data->dai.num_platforms = 1;
168
169 data->dai.name = "hifi";
170 data->dai.stream_name = "hifi";
171 data->dai.codecs->dai_name = "es8328-hifi-analog";
172 data->dai.codecs->of_node = codec_np;
173 data->dai.cpus->of_node = ssi_np;
174 data->dai.platforms->of_node = ssi_np;
175 data->dai.init = &imx_es8328_dai_init;
176 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
177 SND_SOC_DAIFMT_CBM_CFM;
178
179 data->card.dev = dev;
180 data->card.dapm_widgets = imx_es8328_dapm_widgets;
181 data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
182 ret = snd_soc_of_parse_card_name(&data->card, "model");
183 if (ret) {
184 dev_err(dev, "Unable to parse card name\n");
185 goto fail;
186 }
187 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
188 if (ret) {
189 dev_err(dev, "Unable to parse routing: %d\n", ret);
190 goto fail;
191 }
192 data->card.num_links = 1;
193 data->card.owner = THIS_MODULE;
194 data->card.dai_link = &data->dai;
195
196 ret = snd_soc_register_card(&data->card);
197 if (ret) {
198 dev_err(dev, "Unable to register: %d\n", ret);
199 goto fail;
200 }
201
202 platform_set_drvdata(pdev, data);
203fail:
204 of_node_put(ssi_np);
205 of_node_put(codec_np);
206
207 return ret;
208}
209
210static int imx_es8328_remove(struct platform_device *pdev)
211{
212 struct imx_es8328_data *data = platform_get_drvdata(pdev);
213
214 snd_soc_unregister_card(&data->card);
215
216 return 0;
217}
218
219static const struct of_device_id imx_es8328_dt_ids[] = {
220 { .compatible = "fsl,imx-audio-es8328", },
221 { }
222};
223MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
224
225static struct platform_driver imx_es8328_driver = {
226 .driver = {
227 .name = "imx-es8328",
228 .of_match_table = imx_es8328_dt_ids,
229 },
230 .probe = imx_es8328_probe,
231 .remove = imx_es8328_remove,
232};
233module_platform_driver(imx_es8328_driver);
234
235MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
236MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
237MODULE_LICENSE("GPL v2");
238MODULE_ALIAS("platform:imx-audio-es8328");
239
