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.h>
11
12 #include <sound/core.h>
13 #include <sound/pcm.h>
14 #include <sound/soc.h>
15
16 #include <mach/audio.h>
17 #include <mach/eseries-gpio.h>
18
19 #include <asm/mach-types.h>
20
e750_spk_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)21 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
22 struct snd_kcontrol *kcontrol, int event)
23 {
24 if (event & SND_SOC_DAPM_PRE_PMU)
25 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
26 else if (event & SND_SOC_DAPM_POST_PMD)
27 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
28
29 return 0;
30 }
31
e750_hp_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)32 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
33 struct snd_kcontrol *kcontrol, int event)
34 {
35 if (event & SND_SOC_DAPM_PRE_PMU)
36 gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
37 else if (event & SND_SOC_DAPM_POST_PMD)
38 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
39
40 return 0;
41 }
42
43 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
44 SND_SOC_DAPM_HP("Headphone Jack", NULL),
45 SND_SOC_DAPM_SPK("Speaker", NULL),
46 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
47 SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
48 e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
49 SND_SOC_DAPM_POST_PMD),
50 SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
51 e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
52 SND_SOC_DAPM_POST_PMD),
53 };
54
55 static const struct snd_soc_dapm_route audio_map[] = {
56 {"Headphone Amp", NULL, "HPOUTL"},
57 {"Headphone Amp", NULL, "HPOUTR"},
58 {"Headphone Jack", NULL, "Headphone Amp"},
59
60 {"Speaker Amp", NULL, "MONOOUT"},
61 {"Speaker", NULL, "Speaker Amp"},
62
63 {"MIC1", NULL, "Mic (Internal)"},
64 };
65
66 SND_SOC_DAILINK_DEFS(ac97,
67 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
68 DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
69 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
70
71 SND_SOC_DAILINK_DEFS(ac97_aux,
72 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
73 DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
74 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
75
76 static struct snd_soc_dai_link e750_dai[] = {
77 {
78 .name = "AC97",
79 .stream_name = "AC97 HiFi",
80 SND_SOC_DAILINK_REG(ac97),
81 /* use ops to check startup state */
82 },
83 {
84 .name = "AC97 Aux",
85 .stream_name = "AC97 Aux",
86 SND_SOC_DAILINK_REG(ac97_aux),
87 },
88 };
89
90 static struct snd_soc_card e750 = {
91 .name = "Toshiba e750",
92 .owner = THIS_MODULE,
93 .dai_link = e750_dai,
94 .num_links = ARRAY_SIZE(e750_dai),
95
96 .dapm_widgets = e750_dapm_widgets,
97 .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
98 .dapm_routes = audio_map,
99 .num_dapm_routes = ARRAY_SIZE(audio_map),
100 .fully_routed = true,
101 };
102
103 static struct gpio e750_audio_gpios[] = {
104 { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
105 { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
106 };
107
e750_probe(struct platform_device * pdev)108 static int e750_probe(struct platform_device *pdev)
109 {
110 struct snd_soc_card *card = &e750;
111 int ret;
112
113 ret = gpio_request_array(e750_audio_gpios,
114 ARRAY_SIZE(e750_audio_gpios));
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 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
125 }
126 return ret;
127 }
128
e750_remove(struct platform_device * pdev)129 static int e750_remove(struct platform_device *pdev)
130 {
131 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
132 return 0;
133 }
134
135 static struct platform_driver e750_driver = {
136 .driver = {
137 .name = "e750-audio",
138 .pm = &snd_soc_pm_ops,
139 },
140 .probe = e750_probe,
141 .remove = e750_remove,
142 };
143
144 module_platform_driver(e750_driver);
145
146 /* Module information */
147 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
148 MODULE_DESCRIPTION("ALSA SoC driver for e750");
149 MODULE_LICENSE("GPL v2");
150 MODULE_ALIAS("platform:e750-audio");
151