cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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snappercl15.c (3212B)

      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");