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 <linux/gpio.h>
23
24 #define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
25 #define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
26
qi_lb60_spk_event(struct snd_soc_dapm_widget * widget,struct snd_kcontrol * ctrl,int event)27 static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
28 struct snd_kcontrol *ctrl, int event)
29 {
30 int on = !SND_SOC_DAPM_EVENT_OFF(event);
31
32 gpio_set_value(QI_LB60_SND_GPIO, on);
33 gpio_set_value(QI_LB60_AMP_GPIO, on);
34
35 return 0;
36 }
37
38 static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
39 SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
40 SND_SOC_DAPM_MIC("Mic", NULL),
41 };
42
43 static const struct snd_soc_dapm_route qi_lb60_routes[] = {
44 {"Mic", NULL, "MIC"},
45 {"Speaker", NULL, "LOUT"},
46 {"Speaker", NULL, "ROUT"},
47 };
48
49 #define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
50 SND_SOC_DAIFMT_NB_NF | \
51 SND_SOC_DAIFMT_CBM_CFM)
52
qi_lb60_codec_init(struct snd_soc_pcm_runtime * rtd)53 static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
54 {
55 struct snd_soc_codec *codec = rtd->codec;
56 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
57 struct snd_soc_dapm_context *dapm = &codec->dapm;
58 int ret;
59
60 snd_soc_dapm_nc_pin(dapm, "LIN");
61 snd_soc_dapm_nc_pin(dapm, "RIN");
62
63 ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
64 if (ret < 0) {
65 dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
66 return ret;
67 }
68
69 return 0;
70 }
71
72 static struct snd_soc_dai_link qi_lb60_dai = {
73 .name = "jz4740",
74 .stream_name = "jz4740",
75 .cpu_dai_name = "jz4740-i2s",
76 .platform_name = "jz4740-pcm-audio",
77 .codec_dai_name = "jz4740-hifi",
78 .codec_name = "jz4740-codec",
79 .init = qi_lb60_codec_init,
80 };
81
82 static struct snd_soc_card qi_lb60 = {
83 .name = "QI LB60",
84 .owner = THIS_MODULE,
85 .dai_link = &qi_lb60_dai,
86 .num_links = 1,
87
88 .dapm_widgets = qi_lb60_widgets,
89 .num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
90 .dapm_routes = qi_lb60_routes,
91 .num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
92 };
93
94 static struct platform_device *qi_lb60_snd_device;
95
96 static const struct gpio qi_lb60_gpios[] = {
97 { QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" },
98 { QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" },
99 };
100
qi_lb60_init(void)101 static int __init qi_lb60_init(void)
102 {
103 int ret;
104
105 qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
106
107 if (!qi_lb60_snd_device)
108 return -ENOMEM;
109
110 ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
111 if (ret) {
112 pr_err("qi_lb60 snd: Failed to request gpios: %d\n", ret);
113 goto err_device_put;
114 }
115
116 platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);
117
118 ret = platform_device_add(qi_lb60_snd_device);
119 if (ret) {
120 pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
121 goto err_unset_pdata;
122 }
123
124 return 0;
125
126 err_unset_pdata:
127 platform_set_drvdata(qi_lb60_snd_device, NULL);
128 /*err_gpio_free_array:*/
129 gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
130 err_device_put:
131 platform_device_put(qi_lb60_snd_device);
132
133 return ret;
134 }
135 module_init(qi_lb60_init);
136
qi_lb60_exit(void)137 static void __exit qi_lb60_exit(void)
138 {
139 platform_device_unregister(qi_lb60_snd_device);
140 gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
141 }
142 module_exit(qi_lb60_exit);
143
144 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
145 MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
146 MODULE_LICENSE("GPL v2");
147