tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Intel Baytrail SST MAX98090 machine driver
4 * Copyright (c) 2014, Intel Corporation.
5 */
6
7#include <linux/init.h>
8#include <linux/module.h>
9#include <linux/platform_device.h>
10#include <linux/acpi.h>
11#include <linux/device.h>
12#include <linux/gpio.h>
13#include <linux/gpio/consumer.h>
14#include <linux/slab.h>
15#include <sound/pcm.h>
16#include <sound/pcm_params.h>
17#include <sound/soc.h>
18#include <sound/jack.h>
19#include "../../codecs/max98090.h"
20
21struct byt_max98090_private {
22 struct snd_soc_jack jack;
23};
24
25static const struct snd_soc_dapm_widget byt_max98090_widgets[] = {
26 SND_SOC_DAPM_HP("Headphone", NULL),
27 SND_SOC_DAPM_MIC("Headset Mic", NULL),
28 SND_SOC_DAPM_MIC("Int Mic", NULL),
29 SND_SOC_DAPM_SPK("Ext Spk", NULL),
30};
31
32static const struct snd_soc_dapm_route byt_max98090_audio_map[] = {
33 {"IN34", NULL, "Headset Mic"},
34 {"Headset Mic", NULL, "MICBIAS"},
35 {"DMICL", NULL, "Int Mic"},
36 {"Headphone", NULL, "HPL"},
37 {"Headphone", NULL, "HPR"},
38 {"Ext Spk", NULL, "SPKL"},
39 {"Ext Spk", NULL, "SPKR"},
40};
41
42static const struct snd_kcontrol_new byt_max98090_controls[] = {
43 SOC_DAPM_PIN_SWITCH("Headphone"),
44 SOC_DAPM_PIN_SWITCH("Headset Mic"),
45 SOC_DAPM_PIN_SWITCH("Int Mic"),
46 SOC_DAPM_PIN_SWITCH("Ext Spk"),
47};
48
49static struct snd_soc_jack_pin hs_jack_pins[] = {
50 {
51 .pin = "Headphone",
52 .mask = SND_JACK_HEADPHONE,
53 },
54 {
55 .pin = "Headset Mic",
56 .mask = SND_JACK_MICROPHONE,
57 },
58};
59
60static struct snd_soc_jack_gpio hs_jack_gpios[] = {
61 {
62 .name = "hp",
63 .report = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
64 .debounce_time = 200,
65 },
66 {
67 .name = "mic",
68 .invert = 1,
69 .report = SND_JACK_MICROPHONE,
70 .debounce_time = 200,
71 },
72};
73
74static const struct acpi_gpio_params hp_gpios = { 0, 0, false };
75static const struct acpi_gpio_params mic_gpios = { 1, 0, false };
76
77static const struct acpi_gpio_mapping acpi_byt_max98090_gpios[] = {
78 { "hp-gpios", &hp_gpios, 1 },
79 { "mic-gpios", &mic_gpios, 1 },
80 {},
81};
82
83static int byt_max98090_init(struct snd_soc_pcm_runtime *runtime)
84{
85 int ret;
86 struct snd_soc_card *card = runtime->card;
87 struct byt_max98090_private *drv = snd_soc_card_get_drvdata(card);
88 struct snd_soc_jack *jack = &drv->jack;
89
90 card->dapm.idle_bias_off = true;
91
92 ret = snd_soc_dai_set_sysclk(runtime->codec_dai,
93 M98090_REG_SYSTEM_CLOCK,
94 25000000, SND_SOC_CLOCK_IN);
95 if (ret < 0) {
96 dev_err(card->dev, "Can't set codec clock %d\n", ret);
97 return ret;
98 }
99
100 /* Enable jack detection */
101 ret = snd_soc_card_jack_new(runtime->card, "Headset",
102 SND_JACK_LINEOUT | SND_JACK_HEADSET, jack,
103 hs_jack_pins, ARRAY_SIZE(hs_jack_pins));
104 if (ret)
105 return ret;
106
107 return snd_soc_jack_add_gpiods(card->dev->parent, jack,
108 ARRAY_SIZE(hs_jack_gpios),
109 hs_jack_gpios);
110}
111
112SND_SOC_DAILINK_DEFS(baytrail,
113 DAILINK_COMP_ARRAY(COMP_CPU("baytrail-pcm-audio")),
114 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-193C9890:00", "HiFi")),
115 DAILINK_COMP_ARRAY(COMP_PLATFORM("baytrail-pcm-audio")));
116
117static struct snd_soc_dai_link byt_max98090_dais[] = {
118 {
119 .name = "Baytrail Audio",
120 .stream_name = "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 SND_SOC_DAILINK_REG(baytrail),
125 },
126};
127
128static struct snd_soc_card byt_max98090_card = {
129 .name = "byt-max98090",
130 .owner = THIS_MODULE,
131 .dai_link = byt_max98090_dais,
132 .num_links = ARRAY_SIZE(byt_max98090_dais),
133 .dapm_widgets = byt_max98090_widgets,
134 .num_dapm_widgets = ARRAY_SIZE(byt_max98090_widgets),
135 .dapm_routes = byt_max98090_audio_map,
136 .num_dapm_routes = ARRAY_SIZE(byt_max98090_audio_map),
137 .controls = byt_max98090_controls,
138 .num_controls = ARRAY_SIZE(byt_max98090_controls),
139 .fully_routed = true,
140};
141
142static int byt_max98090_probe(struct platform_device *pdev)
143{
144 struct device *dev = &pdev->dev;
145 struct byt_max98090_private *priv;
146 int ret_val;
147
148 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
149 if (!priv) {
150 dev_err(&pdev->dev, "allocation failed\n");
151 return -ENOMEM;
152 }
153
154 ret_val = devm_acpi_dev_add_driver_gpios(dev->parent, acpi_byt_max98090_gpios);
155 if (ret_val)
156 dev_dbg(dev, "Unable to add GPIO mapping table\n");
157
158 byt_max98090_card.dev = &pdev->dev;
159 snd_soc_card_set_drvdata(&byt_max98090_card, priv);
160 ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_max98090_card);
161 if (ret_val) {
162 dev_err(&pdev->dev,
163 "snd_soc_register_card failed %d\n", ret_val);
164 return ret_val;
165 }
166
167 return 0;
168}
169
170static struct platform_driver byt_max98090_driver = {
171 .probe = byt_max98090_probe,
172 .driver = {
173 .name = "byt-max98090",
174 .pm = &snd_soc_pm_ops,
175 },
176};
177module_platform_driver(byt_max98090_driver)
178
179MODULE_DESCRIPTION("ASoC Intel(R) Baytrail Machine driver");
180MODULE_AUTHOR("Omair Md Abdullah, Jarkko Nikula");
181MODULE_LICENSE("GPL v2");
182MODULE_ALIAS("platform:byt-max98090");