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_CBC_CFC,
 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");