1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
4 *
5 * Copyright (C) 2008 Bluewater Systems Ltd
6 * Author: Ryan Mallon
7 */
8
9#include <linux/platform_device.h>
10#include <linux/module.h>
11#include <linux/soc/cirrus/ep93xx.h>
12#include <sound/core.h>
13#include <sound/pcm.h>
14#include <sound/soc.h>
15
16#include <asm/mach-types.h>
17
18#include "../codecs/tlv320aic23.h"
19
20#define CODEC_CLOCK 5644800
21
22static int snappercl15_hw_params(struct snd_pcm_substream *substream,
23				 struct snd_pcm_hw_params *params)
24{
25	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
26	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
27	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
28	int err;
29
30	err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
31				     SND_SOC_CLOCK_IN);
32	if (err)
33		return err;
34
35	err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
36				     SND_SOC_CLOCK_OUT);
37	if (err)
38		return err;
39
40	return 0;
41}
42
43static const struct snd_soc_ops snappercl15_ops = {
44	.hw_params	= snappercl15_hw_params,
45};
46
47static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
48	SND_SOC_DAPM_HP("Headphone Jack", NULL),
49	SND_SOC_DAPM_LINE("Line In", NULL),
50	SND_SOC_DAPM_MIC("Mic Jack", NULL),
51};
52
53static const struct snd_soc_dapm_route audio_map[] = {
54	{"Headphone Jack", NULL, "LHPOUT"},
55	{"Headphone Jack", NULL, "RHPOUT"},
56
57	{"LLINEIN", NULL, "Line In"},
58	{"RLINEIN", NULL, "Line In"},
59
60	{"MICIN", NULL, "Mic Jack"},
61};
62
63SND_SOC_DAILINK_DEFS(aic23,
64	DAILINK_COMP_ARRAY(COMP_CPU("ep93xx-i2s")),
65	DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec.0-001a",
66				      "tlv320aic23-hifi")),
67	DAILINK_COMP_ARRAY(COMP_PLATFORM("ep93xx-i2s")));
68
69static struct snd_soc_dai_link snappercl15_dai = {
70	.name		= "tlv320aic23",
71	.stream_name	= "AIC23",
72	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
73			  SND_SOC_DAIFMT_CBS_CFS,
74	.ops		= &snappercl15_ops,
75	SND_SOC_DAILINK_REG(aic23),
76};
77
78static struct snd_soc_card snd_soc_snappercl15 = {
79	.name		= "Snapper CL15",
80	.owner		= THIS_MODULE,
81	.dai_link	= &snappercl15_dai,
82	.num_links	= 1,
83
84	.dapm_widgets		= tlv320aic23_dapm_widgets,
85	.num_dapm_widgets	= ARRAY_SIZE(tlv320aic23_dapm_widgets),
86	.dapm_routes		= audio_map,
87	.num_dapm_routes	= ARRAY_SIZE(audio_map),
88};
89
90static int snappercl15_probe(struct platform_device *pdev)
91{
92	struct snd_soc_card *card = &snd_soc_snappercl15;
93	int ret;
94
95	ret = ep93xx_i2s_acquire();
96	if (ret)
97		return ret;
98
99	card->dev = &pdev->dev;
100
101	ret = snd_soc_register_card(card);
102	if (ret) {
103		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
104			ret);
105		ep93xx_i2s_release();
106	}
107
108	return ret;
109}
110
111static int snappercl15_remove(struct platform_device *pdev)
112{
113	struct snd_soc_card *card = platform_get_drvdata(pdev);
114
115	snd_soc_unregister_card(card);
116	ep93xx_i2s_release();
117
118	return 0;
119}
120
121static struct platform_driver snappercl15_driver = {
122	.driver		= {
123		.name	= "snappercl15-audio",
124	},
125	.probe		= snappercl15_probe,
126	.remove		= snappercl15_remove,
127};
128
129module_platform_driver(snappercl15_driver);
130
131MODULE_AUTHOR("Ryan Mallon");
132MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
133MODULE_LICENSE("GPL");
134MODULE_ALIAS("platform:snappercl15-audio");
135