1 /*
2 * e740-wm9705.c -- SoC audio for e740
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 #define E740_AUDIO_OUT 1
26 #define E740_AUDIO_IN 2
27
28 static int e740_audio_power;
29
e740_sync_audio_power(int status)30 static void e740_sync_audio_power(int status)
31 {
32 gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
33 gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
34 gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
35 }
36
e740_mic_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)37 static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
38 struct snd_kcontrol *kcontrol, int event)
39 {
40 if (event & SND_SOC_DAPM_PRE_PMU)
41 e740_audio_power |= E740_AUDIO_IN;
42 else if (event & SND_SOC_DAPM_POST_PMD)
43 e740_audio_power &= ~E740_AUDIO_IN;
44
45 e740_sync_audio_power(e740_audio_power);
46
47 return 0;
48 }
49
e740_output_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)50 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
51 struct snd_kcontrol *kcontrol, int event)
52 {
53 if (event & SND_SOC_DAPM_PRE_PMU)
54 e740_audio_power |= E740_AUDIO_OUT;
55 else if (event & SND_SOC_DAPM_POST_PMD)
56 e740_audio_power &= ~E740_AUDIO_OUT;
57
58 e740_sync_audio_power(e740_audio_power);
59
60 return 0;
61 }
62
63 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
64 SND_SOC_DAPM_HP("Headphone Jack", NULL),
65 SND_SOC_DAPM_SPK("Speaker", NULL),
66 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
67 SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
68 e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
69 SND_SOC_DAPM_POST_PMD),
70 SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
71 e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
72 SND_SOC_DAPM_POST_PMD),
73 };
74
75 static const struct snd_soc_dapm_route audio_map[] = {
76 {"Output Amp", NULL, "LOUT"},
77 {"Output Amp", NULL, "ROUT"},
78 {"Output Amp", NULL, "MONOOUT"},
79
80 {"Speaker", NULL, "Output Amp"},
81 {"Headphone Jack", NULL, "Output Amp"},
82
83 {"MIC1", NULL, "Mic Amp"},
84 {"Mic Amp", NULL, "Mic (Internal)"},
85 };
86
87 static struct snd_soc_dai_link e740_dai[] = {
88 {
89 .name = "AC97",
90 .stream_name = "AC97 HiFi",
91 .cpu_dai_name = "pxa2xx-ac97",
92 .codec_dai_name = "wm9705-hifi",
93 .platform_name = "pxa-pcm-audio",
94 .codec_name = "wm9705-codec",
95 },
96 {
97 .name = "AC97 Aux",
98 .stream_name = "AC97 Aux",
99 .cpu_dai_name = "pxa2xx-ac97-aux",
100 .codec_dai_name = "wm9705-aux",
101 .platform_name = "pxa-pcm-audio",
102 .codec_name = "wm9705-codec",
103 },
104 };
105
106 static struct snd_soc_card e740 = {
107 .name = "Toshiba e740",
108 .owner = THIS_MODULE,
109 .dai_link = e740_dai,
110 .num_links = ARRAY_SIZE(e740_dai),
111
112 .dapm_widgets = e740_dapm_widgets,
113 .num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
114 .dapm_routes = audio_map,
115 .num_dapm_routes = ARRAY_SIZE(audio_map),
116 .fully_routed = true,
117 };
118
119 static struct gpio e740_audio_gpios[] = {
120 { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
121 { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
122 { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
123 };
124
e740_probe(struct platform_device * pdev)125 static int e740_probe(struct platform_device *pdev)
126 {
127 struct snd_soc_card *card = &e740;
128 int ret;
129
130 ret = gpio_request_array(e740_audio_gpios,
131 ARRAY_SIZE(e740_audio_gpios));
132 if (ret)
133 return ret;
134
135 card->dev = &pdev->dev;
136
137 ret = devm_snd_soc_register_card(&pdev->dev, card);
138 if (ret) {
139 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
140 ret);
141 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
142 }
143 return ret;
144 }
145
e740_remove(struct platform_device * pdev)146 static int e740_remove(struct platform_device *pdev)
147 {
148 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
149 return 0;
150 }
151
152 static struct platform_driver e740_driver = {
153 .driver = {
154 .name = "e740-audio",
155 .pm = &snd_soc_pm_ops,
156 },
157 .probe = e740_probe,
158 .remove = e740_remove,
159 };
160
161 module_platform_driver(e740_driver);
162
163 /* Module information */
164 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
165 MODULE_DESCRIPTION("ALSA SoC driver for e740");
166 MODULE_LICENSE("GPL v2");
167 MODULE_ALIAS("platform:e740-audio");
168
