2 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
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.
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.
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>
25 #include "../codecs/jz4740.h"
26 #include "jz4740-pcm.h"
27 #include "jz4740-i2s.h"
30 #define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
31 #define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
33 static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
34 struct snd_kcontrol *ctrl, int event)
37 if (event & SND_SOC_DAPM_POST_PMU)
39 else if (event & SND_SOC_DAPM_PRE_PMD)
42 gpio_set_value(QI_LB60_SND_GPIO, on);
43 gpio_set_value(QI_LB60_AMP_GPIO, on);
48 static 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),
53 static const struct snd_soc_dapm_route qi_lb60_routes[] = {
55 {"Speaker", NULL, "LOUT"},
56 {"Speaker", NULL, "ROUT"},
59 #define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
60 SND_SOC_DAIFMT_NB_NF | \
61 SND_SOC_DAIFMT_CBM_CFM)
63 static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
65 struct snd_soc_codec *codec = rtd->codec;
66 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
69 snd_soc_dapm_nc_pin(codec, "LIN");
70 snd_soc_dapm_nc_pin(codec, "RIN");
72 ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
74 dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
78 snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
79 snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
80 snd_soc_dapm_sync(codec);
85 static struct snd_soc_dai_link qi_lb60_dai = {
87 .stream_name = "jz4740",
88 .cpu_dai_name = "jz4740-i2s",
89 .platform_name = "jz4740-pmc-audio",
90 .codec_dai_name = "jz4740-hifi",
91 .codec_name = "jz4740-codec",
92 .init = qi_lb60_codec_init,
95 static struct snd_soc_card qi_lb60 = {
97 .dai_link = &qi_lb60_dai,
101 static struct platform_device *qi_lb60_snd_device;
103 static int __init qi_lb60_init(void)
107 qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
109 if (!qi_lb60_snd_device)
112 ret = gpio_request(QI_LB60_SND_GPIO, "SND");
114 pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
115 QI_LB60_SND_GPIO, ret);
119 ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
121 pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
122 QI_LB60_AMP_GPIO, ret);
123 goto err_gpio_free_snd;
126 gpio_direction_output(QI_LB60_SND_GPIO, 0);
127 gpio_direction_output(QI_LB60_AMP_GPIO, 0);
129 platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);
131 ret = platform_device_add(qi_lb60_snd_device);
133 pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
134 goto err_unset_pdata;
140 platform_set_drvdata(qi_lb60_snd_device, NULL);
141 /*err_gpio_free_amp:*/
142 gpio_free(QI_LB60_AMP_GPIO);
144 gpio_free(QI_LB60_SND_GPIO);
146 platform_device_put(qi_lb60_snd_device);
150 module_init(qi_lb60_init);
152 static void __exit qi_lb60_exit(void)
154 gpio_free(QI_LB60_AMP_GPIO);
155 gpio_free(QI_LB60_SND_GPIO);
156 platform_device_unregister(qi_lb60_snd_device);
158 module_exit(qi_lb60_exit);
160 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
161 MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
162 MODULE_LICENSE("GPL v2");