1 /*
2 * Intel Baytrail SST MAX98090 machine driver
3 * Copyright (c) 2014, Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 */
14
15 #include <linux/init.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/acpi.h>
19 #include <linux/device.h>
20 #include <linux/gpio.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/slab.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/jack.h>
27 #include "../../codecs/max98090.h"
28
29 struct byt_max98090_private {
30 struct snd_soc_jack jack;
31 };
32
33 static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
34 SND_SOC_DAPM_HP("Headphone", NULL),
35 SND_SOC_DAPM_MIC("Headset Mic", NULL),
36 SND_SOC_DAPM_MIC("Int Mic", NULL),
37 SND_SOC_DAPM_SPK("Ext Spk", NULL),
38 };
39
40 static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
41 {"IN34", NULL, "Headset Mic"},
42 {"Headset Mic", NULL, "MICBIAS"},
43 {"DMICL", NULL, "Int Mic"},
44 {"Headphone", NULL, "HPL"},
45 {"Headphone", NULL, "HPR"},
46 {"Ext Spk", NULL, "SPKL"},
47 {"Ext Spk", NULL, "SPKR"},
48 };
49
50 static const struct snd_kcontrol_new byt_max98090_controls[] = {
51 SOC_DAPM_PIN_SWITCH("Headphone"),
52 SOC_DAPM_PIN_SWITCH("Headset Mic"),
53 SOC_DAPM_PIN_SWITCH("Int Mic"),
54 SOC_DAPM_PIN_SWITCH("Ext Spk"),
55 };
56
57 static struct snd_soc_jack_pin hs_jack_pins[] = {
58 {
59 .pin = "Headphone",
60 .mask = SND_JACK_HEADPHONE,
61 },
62 {
63 .pin = "Headset Mic",
64 .mask = SND_JACK_MICROPHONE,
65 },
66 };
67
68 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
69 {
70 .name = "hp-gpio",
71 .idx = 0,
72 .report = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
73 .debounce_time = 200,
74 },
75 {
76 .name = "mic-gpio",
77 .idx = 1,
78 .invert = 1,
79 .report = SND_JACK_MICROPHONE,
80 .debounce_time = 200,
81 },
82 };
83
84 static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
85 {
86 int ret;
87 struct snd_soc_card *card = runtime->card;
88 struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
89 struct snd_soc_jack *jack = &drv->jack;
90
91 card->dapm.idle_bias_off = true;
92
93 ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
94 M98090_REG_SYSTEM_CLOCK,
95 25000000, SND_SOC_CLOCK_IN);
96 if (ret < 0) {
97 dev_err(card->dev, "Can't set codec clock %d\n", ret);
98 return ret;
99 }
100
101 /* Enable jack detection */
102 ret = snd_soc_card_jack_new(runtime->card, "Headset",
103 SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
104 hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
105 if (ret)
106 return ret;
107
108 return snd_soc_jack_add_gpiods(card->dev->parent, jack,
109 ARRAY_SIZE(hs_jack_gpios),
110 hs_jack_gpios);
111 }
112
113 static struct snd_soc_dai_link byt_max98090_dais[] = {
114 {
115 .name = "Baytrail Audio",
116 .stream_name = "Audio",
117 .cpu_dai_name = "baytrail-pcm-audio",
118 .codec_dai_name = "HiFi",
119 .codec_name = "i2c-193C9890:00",
120 .platform_name = "baytrail-pcm-audio",
121 .init = byt_max98090_init,
122 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
123 SND_SOC_DAIFMT_CBS_CFS,
124 },
125 };
126
127 static struct snd_soc_card byt_max98090_card = {
128 .name = "byt-max98090",
129 .owner = THIS_MODULE,
130 .dai_link = byt_max98090_dais,
131 .num_links = ARRAY_SIZE(byt_max98090_dais),
132 .dapm_widgets = byt_max98090_widgets,
133 .num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
134 .dapm_routes = byt_max98090_audio_map,
135 .num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
136 .controls = byt_max98090_controls,
137 .num_controls = ARRAY_SIZE(byt_max98090_controls),
138 .fully_routed = true,
139 };
140
141 static int byt_max98090_probe(struct platform_device *pdev)
142 {
143 int ret_val = 0;
144 struct byt_max98090_private *priv;
145
146 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
147 if (!priv) {
148 dev_err(&pdev->dev, "allocation failed\n");
149 return -ENOMEM;
150 }
151
152 byt_max98090_card.dev = &pdev->dev;
153 snd_soc_card_set_drvdata(&byt_max98090_card, priv);
154 ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
155 if (ret_val) {
156 dev_err(&pdev->dev,
157 "snd_soc_register_card failed %d\n", ret_val);
158 return ret_val;
159 }
160
161 return ret_val;
162 }
163
164 static int byt_max98090_remove(struct platform_device *pdev)
165 {
166 struct snd_soc_card *card = platform_get_drvdata(pdev);
167 struct byt_max98090_private *priv = snd_soc_card_get_drvdata(card);
168
169 snd_soc_jack_free_gpios(&priv->jack, ARRAY_SIZE(hs_jack_gpios),
170 hs_jack_gpios);
171
172 return 0;
173 }
174
175 static struct platform_driver byt_max98090_driver = {
176 .probe = byt_max98090_probe,
177 .remove = byt_max98090_remove,
178 .driver = {
179 .name = "byt-max98090",
180 .pm = &snd_soc_pm_ops,
181 },
182 };
183 module_platform_driver(byt_max98090_driver)
184
185 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
186 MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
187 MODULE_LICENSE("GPL v2");
188 MODULE_ALIAS("platform:byt-max98090");
189
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