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7e7292db SC |
1 | /* |
2 | * Copyright 2012 Freescale Semiconductor, Inc. | |
3 | * Copyright 2012 Linaro Ltd. | |
4 | * | |
5 | * The code contained herein is licensed under the GNU General Public | |
6 | * License. You may obtain a copy of the GNU General Public License | |
7 | * Version 2 or later at the following locations: | |
8 | * | |
9 | * http://www.opensource.org/licenses/gpl-license.html | |
10 | * http://www.gnu.org/copyleft/gpl.html | |
11 | */ | |
12 | ||
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 | ||
27 | struct 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 | ||
36 | static 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 | ||
46 | static struct snd_soc_jack headset_jack; | |
47 | ||
48 | static 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 | /* Headphone jack detection */ | |
55 | if (gpio_is_valid(data->jack_gpio)) { | |
27cb64b4 LPC |
56 | ret = snd_soc_card_jack_new(rtd->card, "Headphone", |
57 | SND_JACK_HEADPHONE | SND_JACK_BTN_0, | |
58 | &headset_jack, NULL, 0); | |
7e7292db SC |
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 | ||
71 | static 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 | ||
78 | static int imx_es8328_probe(struct platform_device *pdev) | |
79 | { | |
80 | struct device_node *np = pdev->dev.of_node; | |
960baba4 | 81 | struct device_node *ssi_np = NULL, *codec_np = NULL; |
7e7292db SC |
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); | |
5c4c99f3 | 107 | ret = -EINVAL; |
7e7292db SC |
108 | goto fail; |
109 | } | |
110 | ||
111 | /* | |
112 | * The port numbering in the hardware manual starts at 1, while | |
113 | * the audmux API expects it starts at 0. | |
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); | |
195 | fail: | |
196 | of_node_put(ssi_np); | |
197 | of_node_put(codec_np); | |
198 | ||
199 | return ret; | |
200 | } | |
201 | ||
202 | static 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 | ||
214 | static const struct of_device_id imx_es8328_dt_ids[] = { | |
215 | { .compatible = "fsl,imx-audio-es8328", }, | |
216 | { /* sentinel */ } | |
217 | }; | |
218 | MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids); | |
219 | ||
220 | static 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 | }; | |
228 | module_platform_driver(imx_es8328_driver); | |
229 | ||
230 | MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>"); | |
231 | MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver"); | |
232 | MODULE_LICENSE("GPL v2"); | |
233 | MODULE_ALIAS("platform:imx-audio-es8328"); |