1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * e750-wm9705.c -- SoC audio for e750
4 *
5 * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
6 */
7
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/gpio/consumer.h>
11
12 #include <sound/core.h>
13 #include <sound/pcm.h>
14 #include <sound/soc.h>
15
16 #include <linux/platform_data/asoc-pxa.h>
17
18 #include <asm/mach-types.h>
19
20 static struct gpio_desc *gpiod_spk_amp, *gpiod_hp_amp;
21
e750_spk_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)22 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
23 struct snd_kcontrol *kcontrol, int event)
24 {
25 if (event & SND_SOC_DAPM_PRE_PMU)
26 gpiod_set_value(gpiod_spk_amp, 1);
27 else if (event & SND_SOC_DAPM_POST_PMD)
28 gpiod_set_value(gpiod_spk_amp, 0);
29
30 return 0;
31 }
32
e750_hp_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)33 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
34 struct snd_kcontrol *kcontrol, int event)
35 {
36 if (event & SND_SOC_DAPM_PRE_PMU)
37 gpiod_set_value(gpiod_hp_amp, 1);
38 else if (event & SND_SOC_DAPM_POST_PMD)
39 gpiod_set_value(gpiod_hp_amp, 0);
40
41 return 0;
42 }
43
44 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
45 SND_SOC_DAPM_HP("Headphone Jack", NULL),
46 SND_SOC_DAPM_SPK("Speaker", NULL),
47 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
48 SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
49 e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
50 SND_SOC_DAPM_POST_PMD),
51 SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
52 e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
53 SND_SOC_DAPM_POST_PMD),
54 };
55
56 static const struct snd_soc_dapm_route audio_map[] = {
57 {"Headphone Amp", NULL, "HPOUTL"},
58 {"Headphone Amp", NULL, "HPOUTR"},
59 {"Headphone Jack", NULL, "Headphone Amp"},
60
61 {"Speaker Amp", NULL, "MONOOUT"},
62 {"Speaker", NULL, "Speaker Amp"},
63
64 {"MIC1", NULL, "Mic (Internal)"},
65 };
66
67 SND_SOC_DAILINK_DEFS(ac97,
68 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
69 DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
70 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
71
72 SND_SOC_DAILINK_DEFS(ac97_aux,
73 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
74 DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
75 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
76
77 static struct snd_soc_dai_link e750_dai[] = {
78 {
79 .name = "AC97",
80 .stream_name = "AC97 HiFi",
81 SND_SOC_DAILINK_REG(ac97),
82 /* use ops to check startup state */
83 },
84 {
85 .name = "AC97 Aux",
86 .stream_name = "AC97 Aux",
87 SND_SOC_DAILINK_REG(ac97_aux),
88 },
89 };
90
91 static struct snd_soc_card e750 = {
92 .name = "Toshiba e750",
93 .owner = THIS_MODULE,
94 .dai_link = e750_dai,
95 .num_links = ARRAY_SIZE(e750_dai),
96
97 .dapm_widgets = e750_dapm_widgets,
98 .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
99 .dapm_routes = audio_map,
100 .num_dapm_routes = ARRAY_SIZE(audio_map),
101 .fully_routed = true,
102 };
103
e750_probe(struct platform_device * pdev)104 static int e750_probe(struct platform_device *pdev)
105 {
106 struct snd_soc_card *card = &e750;
107 int ret;
108
109 gpiod_hp_amp = devm_gpiod_get(&pdev->dev, "Headphone amp", GPIOD_OUT_LOW);
110 ret = PTR_ERR_OR_ZERO(gpiod_hp_amp);
111 if (ret)
112 return ret;
113 gpiod_spk_amp = devm_gpiod_get(&pdev->dev, "Speaker amp", GPIOD_OUT_LOW);
114 ret = PTR_ERR_OR_ZERO(gpiod_spk_amp);
115 if (ret)
116 return ret;
117
118 card->dev = &pdev->dev;
119
120 ret = devm_snd_soc_register_card(&pdev->dev, card);
121 if (ret)
122 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
123 ret);
124 return ret;
125 }
126
e750_remove(struct platform_device * pdev)127 static int e750_remove(struct platform_device *pdev)
128 {
129 return 0;
130 }
131
132 static struct platform_driver e750_driver = {
133 .driver = {
134 .name = "e750-audio",
135 .pm = &snd_soc_pm_ops,
136 },
137 .probe = e750_probe,
138 .remove = e750_remove,
139 };
140
141 module_platform_driver(e750_driver);
142
143 /* Module information */
144 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
145 MODULE_DESCRIPTION("ALSA SoC driver for e750");
146 MODULE_LICENSE("GPL v2");
147 MODULE_ALIAS("platform:e750-audio");
148
