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/consumer.h>
23
24struct qi_lb60 {
25	struct gpio_desc *snd_gpio;
26	struct gpio_desc *amp_gpio;
27};
28
29static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
30			     struct snd_kcontrol *ctrl, int event)
31{
32	struct qi_lb60 *qi_lb60 = snd_soc_card_get_drvdata(widget->dapm->card);
33	int on = !SND_SOC_DAPM_EVENT_OFF(event);
34
35	gpiod_set_value_cansleep(qi_lb60->snd_gpio, on);
36	gpiod_set_value_cansleep(qi_lb60->amp_gpio, on);
37
38	return 0;
39}
40
41static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
42	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
43	SND_SOC_DAPM_MIC("Mic", NULL),
44};
45
46static const struct snd_soc_dapm_route qi_lb60_routes[] = {
47	{"Mic", NULL, "MIC"},
48	{"Speaker", NULL, "LOUT"},
49	{"Speaker", NULL, "ROUT"},
50};
51
52static struct snd_soc_dai_link qi_lb60_dai = {
53	.name = "jz4740",
54	.stream_name = "jz4740",
55	.cpu_dai_name = "jz4740-i2s",
56	.platform_name = "jz4740-i2s",
57	.codec_dai_name = "jz4740-hifi",
58	.codec_name = "jz4740-codec",
59	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
60		SND_SOC_DAIFMT_CBM_CFM,
61};
62
63static struct snd_soc_card qi_lb60_card = {
64	.name = "QI LB60",
65	.owner = THIS_MODULE,
66	.dai_link = &qi_lb60_dai,
67	.num_links = 1,
68
69	.dapm_widgets = qi_lb60_widgets,
70	.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
71	.dapm_routes = qi_lb60_routes,
72	.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
73	.fully_routed = true,
74};
75
76static int qi_lb60_probe(struct platform_device *pdev)
77{
78	struct qi_lb60 *qi_lb60;
79	struct snd_soc_card *card = &qi_lb60_card;
80
81	qi_lb60 = devm_kzalloc(&pdev->dev, sizeof(*qi_lb60), GFP_KERNEL);
82	if (!qi_lb60)
83		return -ENOMEM;
84
85	qi_lb60->snd_gpio = devm_gpiod_get(&pdev->dev, "snd", GPIOD_OUT_LOW);
86	if (IS_ERR(qi_lb60->snd_gpio))
87		return PTR_ERR(qi_lb60->snd_gpio);
88
89	qi_lb60->amp_gpio = devm_gpiod_get(&pdev->dev, "amp", GPIOD_OUT_LOW);
90	if (IS_ERR(qi_lb60->amp_gpio))
91		return PTR_ERR(qi_lb60->amp_gpio);
92
93	card->dev = &pdev->dev;
94
95	snd_soc_card_set_drvdata(card, qi_lb60);
96
97	return devm_snd_soc_register_card(&pdev->dev, card);
98}
99
100static struct platform_driver qi_lb60_driver = {
101	.driver		= {
102		.name	= "qi-lb60-audio",
103	},
104	.probe		= qi_lb60_probe,
105};
106
107module_platform_driver(qi_lb60_driver);
108
109MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
110MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
111MODULE_LICENSE("GPL v2");
112MODULE_ALIAS("platform:qi-lb60-audio");
113