Date:2010-06-19 16:52:51 (8 years 11 months ago)
Author:Lars C.
Commit:c452865872f8077fead5495cc88277b7d38bdfb1
Message:ASoC: JZ4740: Add qi_lb60 board driver

This patch adds ASoC support for the qi_lb60 board.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Files: sound/soc/jz4740/Kconfig (1 diff)
sound/soc/jz4740/Makefile (1 diff)
sound/soc/jz4740/qi_lb60.c (1 diff)

Change Details

sound/soc/jz4740/Kconfig
1212    help
1313      Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740
1414      based boards.
15
16config SND_JZ4740_SOC_QI_LB60
17    tristate "SoC Audio support for Qi LB60"
18    depends on SND_JZ4740_SOC && JZ4740_QI_LB60
19    select SND_JZ4740_SOC_I2S
20    select SND_SOC_JZ4740_CODEC
21    help
22      Say Y if you want to add support for ASoC audio on the Qi LB60 board
23      a.k.a Qi Ben NanoNote.
sound/soc/jz4740/Makefile
77obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o
88obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
99
10# Jz4740 Machine Support
11snd-soc-qi-lb60-objs := qi_lb60.o
12
13obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
sound/soc/jz4740/qi_lb60.c
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/jz4740.h"
26#include "jz4740-pcm.h"
27#include "jz4740-i2s.h"
28
29
30#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
31#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
32
33static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
34                 struct snd_kcontrol *ctrl, int event)
35{
36    int on = 0;
37    if (event & SND_SOC_DAPM_POST_PMU)
38        on = 1;
39    else if (event & SND_SOC_DAPM_PRE_PMD)
40        on = 0;
41
42    gpio_set_value(QI_LB60_SND_GPIO, on);
43    gpio_set_value(QI_LB60_AMP_GPIO, on);
44
45    return 0;
46}
47
48static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
49    SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
50    SND_SOC_DAPM_MIC("Mic", NULL),
51};
52
53static const struct snd_soc_dapm_route qi_lb60_routes[] = {
54    {"Mic", NULL, "MIC"},
55    {"Speaker", NULL, "LOUT"},
56    {"Speaker", NULL, "ROUT"},
57};
58
59#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
60            SND_SOC_DAIFMT_NB_NF | \
61            SND_SOC_DAIFMT_CBM_CFM)
62
63static int qi_lb60_codec_init(struct snd_soc_codec *codec)
64{
65    int ret;
66    struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
67
68    snd_soc_dapm_nc_pin(codec, "LIN");
69    snd_soc_dapm_nc_pin(codec, "RIN");
70
71    ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
72    if (ret < 0) {
73        dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
74        return ret;
75    }
76
77    snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
78    snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
79    snd_soc_dapm_sync(codec);
80
81    return 0;
82}
83
84static struct snd_soc_dai_link qi_lb60_dai = {
85    .name = "jz4740",
86    .stream_name = "jz4740",
87    .cpu_dai = &jz4740_i2s_dai,
88    .codec_dai = &jz4740_codec_dai,
89    .init = qi_lb60_codec_init,
90};
91
92static struct snd_soc_card qi_lb60 = {
93    .name = "QI LB60",
94    .dai_link = &qi_lb60_dai,
95    .num_links = 1,
96    .platform = &jz4740_soc_platform,
97};
98
99static struct snd_soc_device qi_lb60_snd_devdata = {
100    .card = &qi_lb60,
101    .codec_dev = &soc_codec_dev_jz4740_codec,
102};
103
104static struct platform_device *qi_lb60_snd_device;
105
106static int __init qi_lb60_init(void)
107{
108    int ret;
109
110    qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
111
112    if (!qi_lb60_snd_device)
113        return -ENOMEM;
114
115    ret = gpio_request(QI_LB60_SND_GPIO, "SND");
116    if (ret) {
117        pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
118                QI_LB60_SND_GPIO, ret);
119        goto err_device_put;
120    }
121
122    ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
123    if (ret) {
124        pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
125                QI_LB60_AMP_GPIO, ret);
126        goto err_gpio_free_snd;
127    }
128
129    gpio_direction_output(QI_LB60_SND_GPIO, 0);
130    gpio_direction_output(QI_LB60_AMP_GPIO, 0);
131
132    platform_set_drvdata(qi_lb60_snd_device, &qi_lb60_snd_devdata);
133    qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev;
134
135    ret = platform_device_add(qi_lb60_snd_device);
136    if (ret) {
137        pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
138        goto err_unset_pdata;
139    }
140
141     return 0;
142
143err_unset_pdata:
144    platform_set_drvdata(qi_lb60_snd_device, NULL);
145/*err_gpio_free_amp:*/
146    gpio_free(QI_LB60_AMP_GPIO);
147err_gpio_free_snd:
148    gpio_free(QI_LB60_SND_GPIO);
149err_device_put:
150    platform_device_put(qi_lb60_snd_device);
151
152    return ret;
153}
154module_init(qi_lb60_init);
155
156static void __exit qi_lb60_exit(void)
157{
158    gpio_free(QI_LB60_AMP_GPIO);
159    gpio_free(QI_LB60_SND_GPIO);
160    platform_device_unregister(qi_lb60_snd_device);
161}
162module_exit(qi_lb60_exit);
163
164MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
165MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
166MODULE_LICENSE("GPL v2");

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