source: trunk/target/linux/xburst/files-2.6.32/sound/soc/jz4740/n526.c @ 19098

Last change on this file since 19098 was 19098, checked in by lars, 6 years ago

Merge xburst target.

File size: 4.1 KB
Line 
1/*
2 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 *  You should have received a copy of the  GNU General Public License along
9 *  with this program; if not, write  to the Free Software Foundation, Inc.,
10 *  675 Mass Ave, Cambridge, MA 02139, USA.
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/timer.h>
17#include <linux/interrupt.h>
18#include <linux/platform_device.h>
19#include <sound/core.h>
20#include <sound/pcm.h>
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23#include <linux/gpio.h>
24
25#include "../codecs/jzcodec.h"
26#include "jz4740-pcm.h"
27#include "jz4740-i2s.h"
28
29#define N526_AMP_EN_GPIO JZ_GPIO_PORTD(4)
30
31static int n526_spk_event(struct snd_soc_dapm_widget *widget,
32                             struct snd_kcontrol *ctrl, int event)
33{
34        gpio_set_value(N526_AMP_EN_GPIO, !SND_SOC_DAPM_EVENT_OFF(event));
35        return 0;
36}
37
38static const struct snd_soc_dapm_widget n526_widgets[] = {
39        SND_SOC_DAPM_SPK("Speaker", n526_spk_event),
40        SND_SOC_DAPM_HP("Headphone", NULL),
41        SND_SOC_DAPM_MIC("Mic", NULL),
42};
43
44static const struct snd_soc_dapm_route n526_routes[] = {
45        {"Mic", NULL, "MIC"},
46        {"Speaker", NULL, "LOUT"},
47        {"Speaker", NULL, "ROUT"},
48        {"Headphone", NULL, "LOUT"},
49        {"Headphone", NULL, "ROUT"},
50};
51
52static const struct snd_kcontrol_new n526_controls[] = {
53        SOC_DAPM_PIN_SWITCH("Speaker"),
54};
55
56#define N526_DAIFMT (SND_SOC_DAIFMT_I2S | \
57                        SND_SOC_DAIFMT_NB_NF | \
58                        SND_SOC_DAIFMT_CBM_CFM)
59
60static int n526_codec_init(struct snd_soc_codec *codec)
61{
62        int ret;
63        struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
64        struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
65
66        snd_soc_dapm_nc_pin(codec, "LIN");
67        snd_soc_dapm_nc_pin(codec, "RIN");
68
69        ret = snd_soc_dai_set_fmt(codec_dai, N526_DAIFMT);
70        if (ret < 0) {
71                dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
72                return ret;
73        }
74
75        ret = snd_soc_dai_set_fmt(cpu_dai, N526_DAIFMT);
76        if (ret < 0) {
77                dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
78                return ret;
79        }
80
81        ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
82                SND_SOC_CLOCK_IN);
83        if (ret < 0) {
84                dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
85                return ret;
86        }
87
88        snd_soc_dapm_new_controls(codec, n526_widgets, ARRAY_SIZE(n526_widgets));
89
90        snd_soc_add_controls(codec, n526_controls,
91                                ARRAY_SIZE(n526_controls));
92
93        snd_soc_dapm_add_routes(codec, n526_routes, ARRAY_SIZE(n526_routes));
94
95        snd_soc_dapm_sync(codec);
96
97        return 0;
98}
99
100static struct snd_soc_dai_link n526_dai = {
101        .name = "jz-codec",
102        .stream_name = "JZCODEC",
103        .cpu_dai = &jz4740_i2s_dai,
104        .codec_dai = &jz_codec_dai,
105        .init = n526_codec_init,
106};
107
108static struct snd_soc_card n526 = {
109        .name = "N526",
110        .dai_link = &n526_dai,
111        .num_links = 1,
112        .platform = &jz4740_soc_platform,
113};
114
115static struct snd_soc_device n526_snd_devdata = {
116        .card = &n526,
117        .codec_dev = &soc_codec_dev_jzcodec,
118};
119
120static struct platform_device *n526_snd_device;
121
122static int __init n526_init(void)
123{
124        int ret;
125
126        n526_snd_device = platform_device_alloc("soc-audio", -1);
127
128        if (!n526_snd_device)
129                return -ENOMEM;
130
131        ret = gpio_request(N526_AMP_EN_GPIO, "AMP");
132        if (ret) {
133                pr_err("n526 snd: Failed to request AMP GPIO(%d): %d\n",
134                                N526_AMP_EN_GPIO, ret);
135                goto err_device_put;
136        }
137
138        gpio_direction_output(JZ_GPIO_PORTD(4), 0);
139
140        platform_set_drvdata(n526_snd_device, &n526_snd_devdata);
141        n526_snd_devdata.dev = &n526_snd_device->dev;
142        ret = platform_device_add(n526_snd_device);
143        if (ret) {
144                pr_err("n526 snd: Failed to add snd soc device: %d\n", ret);
145                goto err_unset_pdata;
146        }
147
148         return 0;
149
150err_unset_pdata:
151        platform_set_drvdata(n526_snd_device, NULL);
152        gpio_free(N526_AMP_EN_GPIO);
153err_device_put:
154        platform_device_put(n526_snd_device);
155
156        return ret;
157}
158module_init(n526_init);
159
160static void __exit n526_exit(void)
161{
162        gpio_free(N526_AMP_EN_GPIO);
163        platform_device_unregister(n526_snd_device);
164}
165module_exit(n526_exit);
166
167MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
168MODULE_DESCRIPTION("ALSA SoC N526 audio support");
169MODULE_LICENSE("GPL v2");
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