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 #define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
26 #define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
28 static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
29 struct snd_kcontrol *ctrl, int event)
32 if (event & SND_SOC_DAPM_POST_PMU)
34 else if (event & SND_SOC_DAPM_PRE_PMD)
37 gpio_set_value(QI_LB60_SND_GPIO, on);
38 gpio_set_value(QI_LB60_AMP_GPIO, on);
43 static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
44 SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
45 SND_SOC_DAPM_MIC("Mic", NULL),
48 static const struct snd_soc_dapm_route qi_lb60_routes[] = {
50 {"Speaker", NULL, "LOUT"},
51 {"Speaker", NULL, "ROUT"},
54 #define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
55 SND_SOC_DAIFMT_NB_NF | \
56 SND_SOC_DAIFMT_CBM_CFM)
58 static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
60 struct snd_soc_codec *codec = rtd->codec;
61 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
62 struct snd_soc_dapm_context *dapm = &codec->dapm;
65 snd_soc_dapm_nc_pin(dapm, "LIN");
66 snd_soc_dapm_nc_pin(dapm, "RIN");
68 ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
70 dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
74 snd_soc_dapm_new_controls(dapm, qi_lb60_widgets,
75 ARRAY_SIZE(qi_lb60_widgets));
76 snd_soc_dapm_add_routes(dapm, qi_lb60_routes,
77 ARRAY_SIZE(qi_lb60_routes));
78 snd_soc_dapm_sync(dapm);
83 static struct snd_soc_dai_link qi_lb60_dai = {
85 .stream_name = "jz4740",
86 .cpu_dai_name = "jz4740-i2s",
87 .platform_name = "jz4740-pcm-audio",
88 .codec_dai_name = "jz4740-hifi",
89 .codec_name = "jz4740-codec",
90 .init = qi_lb60_codec_init,
93 static struct snd_soc_card qi_lb60 = {
95 .dai_link = &qi_lb60_dai,
99 static struct platform_device *qi_lb60_snd_device;
101 static int __init qi_lb60_init(void)
105 qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
107 if (!qi_lb60_snd_device)
110 ret = gpio_request(QI_LB60_SND_GPIO, "SND");
112 pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
113 QI_LB60_SND_GPIO, ret);
117 ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
119 pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
120 QI_LB60_AMP_GPIO, ret);
121 goto err_gpio_free_snd;
124 gpio_direction_output(QI_LB60_SND_GPIO, 0);
125 gpio_direction_output(QI_LB60_AMP_GPIO, 0);
127 platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);
129 ret = platform_device_add(qi_lb60_snd_device);
131 pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
132 goto err_unset_pdata;
138 platform_set_drvdata(qi_lb60_snd_device, NULL);
139 /*err_gpio_free_amp:*/
140 gpio_free(QI_LB60_AMP_GPIO);
142 gpio_free(QI_LB60_SND_GPIO);
144 platform_device_put(qi_lb60_snd_device);
148 module_init(qi_lb60_init);
150 static void __exit qi_lb60_exit(void)
152 gpio_free(QI_LB60_AMP_GPIO);
153 gpio_free(QI_LB60_SND_GPIO);
154 platform_device_unregister(qi_lb60_snd_device);
156 module_exit(qi_lb60_exit);
158 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
159 MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
160 MODULE_LICENSE("GPL v2");