1 /*
2 * e750-wm9705.c -- SoC audio for e750
3 *
4 * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; version 2 ONLY.
9 *
10 */
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/gpio.h>
15
16 #include <sound/core.h>
17 #include <sound/pcm.h>
18 #include <sound/soc.h>
19
20 #include <mach/audio.h>
21 #include <mach/eseries-gpio.h>
22
23 #include <asm/mach-types.h>
24
25 #include "../codecs/wm9705.h"
26 #include "pxa2xx-ac97.h"
27
e750_spk_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)28 static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,
29 struct snd_kcontrol *kcontrol, int event)
30 {
31 if (event & SND_SOC_DAPM_PRE_PMU)
32 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);
33 else if (event & SND_SOC_DAPM_POST_PMD)
34 gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);
35
36 return 0;
37 }
38
e750_hp_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)39 static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,
40 struct snd_kcontrol *kcontrol, int event)
41 {
42 if (event & SND_SOC_DAPM_PRE_PMU)
43 gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);
44 else if (event & SND_SOC_DAPM_POST_PMD)
45 gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);
46
47 return 0;
48 }
49
50 static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {
51 SND_SOC_DAPM_HP("Headphone Jack", NULL),
52 SND_SOC_DAPM_SPK("Speaker", NULL),
53 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
54 SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
55 e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
56 SND_SOC_DAPM_POST_PMD),
57 SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
58 e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
59 SND_SOC_DAPM_POST_PMD),
60 };
61
62 static const struct snd_soc_dapm_route audio_map[] = {
63 {"Headphone Amp", NULL, "HPOUTL"},
64 {"Headphone Amp", NULL, "HPOUTR"},
65 {"Headphone Jack", NULL, "Headphone Amp"},
66
67 {"Speaker Amp", NULL, "MONOOUT"},
68 {"Speaker", NULL, "Speaker Amp"},
69
70 {"MIC1", NULL, "Mic (Internal)"},
71 };
72
73 static struct snd_soc_dai_link e750_dai[] = {
74 {
75 .name = "AC97",
76 .stream_name = "AC97 HiFi",
77 .cpu_dai_name = "pxa2xx-ac97",
78 .codec_dai_name = "wm9705-hifi",
79 .platform_name = "pxa-pcm-audio",
80 .codec_name = "wm9705-codec",
81 /* use ops to check startup state */
82 },
83 {
84 .name = "AC97 Aux",
85 .stream_name = "AC97 Aux",
86 .cpu_dai_name = "pxa2xx-ac97-aux",
87 .codec_dai_name ="wm9705-aux",
88 .platform_name = "pxa-pcm-audio",
89 .codec_name = "wm9705-codec",
90 },
91 };
92
93 static struct snd_soc_card e750 = {
94 .name = "Toshiba e750",
95 .owner = THIS_MODULE,
96 .dai_link = e750_dai,
97 .num_links = ARRAY_SIZE(e750_dai),
98
99 .dapm_widgets = e750_dapm_widgets,
100 .num_dapm_widgets = ARRAY_SIZE(e750_dapm_widgets),
101 .dapm_routes = audio_map,
102 .num_dapm_routes = ARRAY_SIZE(audio_map),
103 .fully_routed = true,
104 };
105
106 static struct gpio e750_audio_gpios[] = {
107 { GPIO_E750_HP_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Headphone amp" },
108 { GPIO_E750_SPK_AMP_OFF, GPIOF_OUT_INIT_HIGH, "Speaker amp" },
109 };
110
e750_probe(struct platform_device * pdev)111 static int e750_probe(struct platform_device *pdev)
112 {
113 struct snd_soc_card *card = &e750;
114 int ret;
115
116 ret = gpio_request_array(e750_audio_gpios,
117 ARRAY_SIZE(e750_audio_gpios));
118 if (ret)
119 return ret;
120
121 card->dev = &pdev->dev;
122
123 ret = devm_snd_soc_register_card(&pdev->dev, card);
124 if (ret) {
125 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
126 ret);
127 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
128 }
129 return ret;
130 }
131
e750_remove(struct platform_device * pdev)132 static int e750_remove(struct platform_device *pdev)
133 {
134 gpio_free_array(e750_audio_gpios, ARRAY_SIZE(e750_audio_gpios));
135 return 0;
136 }
137
138 static struct platform_driver e750_driver = {
139 .driver = {
140 .name = "e750-audio",
141 .pm = &snd_soc_pm_ops,
142 },
143 .probe = e750_probe,
144 .remove = e750_remove,
145 };
146
147 module_platform_driver(e750_driver);
148
149 /* Module information */
150 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
151 MODULE_DESCRIPTION("ALSA SoC driver for e750");
152 MODULE_LICENSE("GPL v2");
153 MODULE_ALIAS("platform:e750-audio");
154