2 * e740-wm9705.c -- SoC audio for e740
4 * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
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.
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/gpio.h>
16 #include <sound/core.h>
17 #include <sound/pcm.h>
18 #include <sound/soc.h>
20 #include <mach/audio.h>
21 #include <mach/eseries-gpio.h>
23 #include <asm/mach-types.h>
25 #define E740_AUDIO_OUT 1
26 #define E740_AUDIO_IN 2
28 static int e740_audio_power;
30 static void e740_sync_audio_power(int status)
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);
37 static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
38 struct snd_kcontrol *kcontrol, int event)
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;
45 e740_sync_audio_power(e740_audio_power);
50 static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
51 struct snd_kcontrol *kcontrol, int event)
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;
58 e740_sync_audio_power(e740_audio_power);
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),
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"},
80 {"Speaker", NULL, "Output Amp"},
81 {"Headphone Jack", NULL, "Output Amp"},
83 {"MIC1", NULL, "Mic Amp"},
84 {"Mic Amp", NULL, "Mic (Internal)"},
87 SND_SOC_DAILINK_DEFS(ac97,
88 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
89 DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")),
90 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
92 SND_SOC_DAILINK_DEFS(ac97_aux,
93 DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
94 DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")),
95 DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
97 static struct snd_soc_dai_link e740_dai[] = {
100 .stream_name = "AC97 HiFi",
101 SND_SOC_DAILINK_REG(ac97),
105 .stream_name = "AC97 Aux",
106 SND_SOC_DAILINK_REG(ac97_aux),
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),
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,
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" },
129 static int e740_probe(struct platform_device *pdev)
131 struct snd_soc_card *card = &e740;
134 ret = gpio_request_array(e740_audio_gpios,
135 ARRAY_SIZE(e740_audio_gpios));
139 card->dev = &pdev->dev;
141 ret = devm_snd_soc_register_card(&pdev->dev, card);
143 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
145 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
150 static int e740_remove(struct platform_device *pdev)
152 gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
156 static struct platform_driver e740_driver = {
158 .name = "e740-audio",
159 .pm = &snd_soc_pm_ops,
162 .remove = e740_remove,
165 module_platform_driver(e740_driver);
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");