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 #include "../codecs/wm9705.h"
26 #include "pxa2xx-ac97.h"
27
28
29 #define E740_AUDIO_OUT 1
30 #define E740_AUDIO_IN 2
31
32 static int e740_audio_power;
33
e740_sync_audio_power(int status)34 static void e740_sync_audio_power(int status)
35 {
36 gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
37 gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
38 gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
39 }
40
e740_mic_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)41 static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
42 struct snd_kcontrol *kcontrol, int event)
43 {
44 if (event & SND_SOC_DAPM_PRE_PMU)
45 e740_audio_power |= E740_AUDIO_IN;
46 else if (event & SND_SOC_DAPM_POST_PMD)
47 e740_audio_power &= ~E740_AUDIO_IN;
48
49 e740_sync_audio_power(e740_audio_power);
50
51 return 0;
52 }
53
e740_output_amp_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)54 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
55 struct snd_kcontrol *kcontrol, int event)
56 {
57 if (event & SND_SOC_DAPM_PRE_PMU)
58 e740_audio_power |= E740_AUDIO_OUT;
59 else if (event & SND_SOC_DAPM_POST_PMD)
60 e740_audio_power &= ~E740_AUDIO_OUT;
61
62 e740_sync_audio_power(e740_audio_power);
63
64 return 0;
65 }
66
67 static const struct snd_soc_dapm_widget e740_dapm_widgets[] = {
68 SND_SOC_DAPM_HP("Headphone Jack", NULL),
69 SND_SOC_DAPM_SPK("Speaker", NULL),
70 SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
71 SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
72 e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
73 SND_SOC_DAPM_POST_PMD),
74 SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
75 e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
76 SND_SOC_DAPM_POST_PMD),
77 };
78
79 static const struct snd_soc_dapm_route audio_map[] = {
80 {"Output Amp", NULL, "LOUT"},
81 {"Output Amp", NULL, "ROUT"},
82 {"Output Amp", NULL, "MONOOUT"},
83
84 {"Speaker", NULL, "Output Amp"},
85 {"Headphone Jack", NULL, "Output Amp"},
86
87 {"MIC1", NULL, "Mic Amp"},
88 {"Mic Amp", NULL, "Mic (Internal)"},
89 };
90
91 static struct snd_soc_dai_link e740_dai[] = {
92 {
93 .name = "AC97",
94 .stream_name = "AC97 HiFi",
95 .cpu_dai_name = "pxa2xx-ac97",
96 .codec_dai_name = "wm9705-hifi",
97 .platform_name = "pxa-pcm-audio",
98 .codec_name = "wm9705-codec",
99 },
100 {
101 .name = "AC97 Aux",
102 .stream_name = "AC97 Aux",
103 .cpu_dai_name = "pxa2xx-ac97-aux",
104 .codec_dai_name = "wm9705-aux",
105 .platform_name = "pxa-pcm-audio",
106 .codec_name = "wm9705-codec",
107 },
108 };
109
110 static struct snd_soc_card e740 = {
111 .name = "Toshiba e740",
112 .owner = THIS_MODULE,
113 .dai_link = e740_dai,
114 .num_links = ARRAY_SIZE(e740_dai),
115
116 .dapm_widgets = e740_dapm_widgets,
117 .num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
118 .dapm_routes = audio_map,
119 .num_dapm_routes = ARRAY_SIZE(audio_map),
120 .fully_routed = true,
121 };
122
123 static struct gpio e740_audio_gpios[] = {
124 { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
125 { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
126 { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
127 };
128
e740_probe(struct platform_device * pdev)129 static int e740_probe(struct platform_device *pdev)
130 {
131 struct snd_soc_card *card = &e740;
132 int ret;
133
134 ret = gpio_request_array(e740_audio_gpios,
135 ARRAY_SIZE(e740_audio_gpios));
136 if (ret)
137 return ret;
138
139 card->dev = &pdev->dev;
140
141 ret = devm_snd_soc_register_card(&pdev->dev, card);
142 if (ret) {
143 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
144 ret);
145 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
146 }
147 return ret;
148 }
149
e740_remove(struct platform_device * pdev)150 static int e740_remove(struct platform_device *pdev)
151 {
152 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
153 return 0;
154 }
155
156 static struct platform_driver e740_driver = {
157 .driver = {
158 .name = "e740-audio",
159 .pm = &snd_soc_pm_ops,
160 },
161 .probe = e740_probe,
162 .remove = e740_remove,
163 };
164
165 module_platform_driver(e740_driver);
166
167 /* Module information */
168 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
169 MODULE_DESCRIPTION("ALSA SoC driver for e740");
170 MODULE_LICENSE("GPL v2");
171 MODULE_ALIAS("platform:e740-audio");
172