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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es7134.c (8062B)


      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Copyright (c) 2017 BayLibre, SAS.
      4 * Author: Jerome Brunet <jbrunet@baylibre.com>
      5 */
      6
      7#include <linux/of_platform.h>
      8#include <linux/module.h>
      9#include <sound/soc.h>
     10
     11/*
     12 * The everest 7134 is a very simple DA converter with no register
     13 */
     14
     15struct es7134_clock_mode {
     16	unsigned int rate_min;
     17	unsigned int rate_max;
     18	unsigned int *mclk_fs;
     19	unsigned int mclk_fs_num;
     20};
     21
     22struct es7134_chip {
     23	struct snd_soc_dai_driver *dai_drv;
     24	const struct es7134_clock_mode *modes;
     25	unsigned int mode_num;
     26	const struct snd_soc_dapm_widget *extra_widgets;
     27	unsigned int extra_widget_num;
     28	const struct snd_soc_dapm_route *extra_routes;
     29	unsigned int extra_route_num;
     30};
     31
     32struct es7134_data {
     33	unsigned int mclk;
     34	const struct es7134_chip *chip;
     35};
     36
     37static int es7134_check_mclk(struct snd_soc_dai *dai,
     38			     struct es7134_data *priv,
     39			     unsigned int rate)
     40{
     41	unsigned int mfs = priv->mclk / rate;
     42	int i, j;
     43
     44	for (i = 0; i < priv->chip->mode_num; i++) {
     45		const struct es7134_clock_mode *mode = &priv->chip->modes[i];
     46
     47		if (rate < mode->rate_min || rate > mode->rate_max)
     48			continue;
     49
     50		for (j = 0; j < mode->mclk_fs_num; j++) {
     51			if (mode->mclk_fs[j] == mfs)
     52				return 0;
     53		}
     54
     55		dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
     56			mfs, rate);
     57		return -EINVAL;
     58	}
     59
     60	/* should not happen */
     61	dev_err(dai->dev, "unsupported rate: %u\n", rate);
     62	return -EINVAL;
     63}
     64
     65static int es7134_hw_params(struct snd_pcm_substream *substream,
     66			    struct snd_pcm_hw_params *params,
     67			    struct snd_soc_dai *dai)
     68{
     69	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
     70
     71	/* mclk has not been provided, assume it is OK */
     72	if (!priv->mclk)
     73		return 0;
     74
     75	return es7134_check_mclk(dai, priv, params_rate(params));
     76}
     77
     78static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
     79			     unsigned int freq, int dir)
     80{
     81	struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
     82
     83	if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
     84		priv->mclk = freq;
     85		return 0;
     86	}
     87
     88	return -ENOTSUPP;
     89}
     90
     91static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
     92{
     93	fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
     94		SND_SOC_DAIFMT_MASTER_MASK);
     95
     96	if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
     97		    SND_SOC_DAIFMT_CBC_CFC)) {
     98		dev_err(codec_dai->dev, "Invalid DAI format\n");
     99		return -EINVAL;
    100	}
    101
    102	return 0;
    103}
    104
    105static int es7134_component_probe(struct snd_soc_component *c)
    106{
    107	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
    108	struct es7134_data *priv = snd_soc_component_get_drvdata(c);
    109	const struct es7134_chip *chip = priv->chip;
    110	int ret;
    111
    112	if (chip->extra_widget_num) {
    113		ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
    114						chip->extra_widget_num);
    115		if (ret) {
    116			dev_err(c->dev, "failed to add extra widgets\n");
    117			return ret;
    118		}
    119	}
    120
    121	if (chip->extra_route_num) {
    122		ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
    123					      chip->extra_route_num);
    124		if (ret) {
    125			dev_err(c->dev, "failed to add extra routes\n");
    126			return ret;
    127		}
    128	}
    129
    130	return 0;
    131}
    132
    133static const struct snd_soc_dai_ops es7134_dai_ops = {
    134	.set_fmt	= es7134_set_fmt,
    135	.hw_params	= es7134_hw_params,
    136	.set_sysclk	= es7134_set_sysclk,
    137};
    138
    139static struct snd_soc_dai_driver es7134_dai = {
    140	.name = "es7134-hifi",
    141	.playback = {
    142		.stream_name = "Playback",
    143		.channels_min = 2,
    144		.channels_max = 2,
    145		.rates = (SNDRV_PCM_RATE_8000_48000 |
    146			  SNDRV_PCM_RATE_88200      |
    147			  SNDRV_PCM_RATE_96000      |
    148			  SNDRV_PCM_RATE_176400     |
    149			  SNDRV_PCM_RATE_192000),
    150		.formats = (SNDRV_PCM_FMTBIT_S16_LE  |
    151			    SNDRV_PCM_FMTBIT_S18_3LE |
    152			    SNDRV_PCM_FMTBIT_S20_3LE |
    153			    SNDRV_PCM_FMTBIT_S24_3LE |
    154			    SNDRV_PCM_FMTBIT_S24_LE),
    155	},
    156	.ops = &es7134_dai_ops,
    157};
    158
    159static const struct es7134_clock_mode es7134_modes[] = {
    160	{
    161		/* Single speed mode */
    162		.rate_min = 8000,
    163		.rate_max = 50000,
    164		.mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
    165		.mclk_fs_num = 5,
    166	}, {
    167		/* Double speed mode */
    168		.rate_min = 84000,
    169		.rate_max = 100000,
    170		.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
    171		.mclk_fs_num = 5,
    172	}, {
    173		/* Quad speed mode */
    174		.rate_min = 167000,
    175		.rate_max = 192000,
    176		.mclk_fs = (unsigned int[]) { 128, 192, 256 },
    177		.mclk_fs_num = 3,
    178	},
    179};
    180
    181/* Digital I/O are also supplied by VDD on the es7134 */
    182static const struct snd_soc_dapm_route es7134_extra_routes[] = {
    183	{ "Playback", NULL, "VDD", }
    184};
    185
    186static const struct es7134_chip es7134_chip __maybe_unused = {
    187	.dai_drv = &es7134_dai,
    188	.modes = es7134_modes,
    189	.mode_num = ARRAY_SIZE(es7134_modes),
    190	.extra_routes = es7134_extra_routes,
    191	.extra_route_num = ARRAY_SIZE(es7134_extra_routes),
    192};
    193
    194static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
    195	SND_SOC_DAPM_OUTPUT("AOUTL"),
    196	SND_SOC_DAPM_OUTPUT("AOUTR"),
    197	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
    198	SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
    199};
    200
    201static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
    202	{ "AOUTL", NULL, "DAC" },
    203	{ "AOUTR", NULL, "DAC" },
    204	{ "DAC", NULL, "VDD" },
    205};
    206
    207static const struct snd_soc_component_driver es7134_component_driver = {
    208	.probe			= es7134_component_probe,
    209	.dapm_widgets		= es7134_dapm_widgets,
    210	.num_dapm_widgets	= ARRAY_SIZE(es7134_dapm_widgets),
    211	.dapm_routes		= es7134_dapm_routes,
    212	.num_dapm_routes	= ARRAY_SIZE(es7134_dapm_routes),
    213	.idle_bias_on		= 1,
    214	.use_pmdown_time	= 1,
    215	.endianness		= 1,
    216	.non_legacy_dai_naming	= 1,
    217};
    218
    219static struct snd_soc_dai_driver es7154_dai = {
    220	.name = "es7154-hifi",
    221	.playback = {
    222		.stream_name = "Playback",
    223		.channels_min = 2,
    224		.channels_max = 2,
    225		.rates = (SNDRV_PCM_RATE_8000_48000 |
    226			  SNDRV_PCM_RATE_88200      |
    227			  SNDRV_PCM_RATE_96000),
    228		.formats = (SNDRV_PCM_FMTBIT_S16_LE  |
    229			    SNDRV_PCM_FMTBIT_S18_3LE |
    230			    SNDRV_PCM_FMTBIT_S20_3LE |
    231			    SNDRV_PCM_FMTBIT_S24_3LE |
    232			    SNDRV_PCM_FMTBIT_S24_LE),
    233	},
    234	.ops = &es7134_dai_ops,
    235};
    236
    237static const struct es7134_clock_mode es7154_modes[] = {
    238	{
    239		/* Single speed mode */
    240		.rate_min = 8000,
    241		.rate_max = 50000,
    242		.mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
    243					      384, 512, 768, 1024 },
    244		.mclk_fs_num = 9,
    245	}, {
    246		/* Double speed mode */
    247		.rate_min = 84000,
    248		.rate_max = 100000,
    249		.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
    250					      768, 1024},
    251		.mclk_fs_num = 7,
    252	}
    253};
    254
    255/* Es7154 has a separate supply for digital I/O  */
    256static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
    257	SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
    258};
    259
    260static const struct snd_soc_dapm_route es7154_extra_routes[] = {
    261	{ "Playback", NULL, "PVDD", }
    262};
    263
    264static const struct es7134_chip es7154_chip __maybe_unused = {
    265	.dai_drv = &es7154_dai,
    266	.modes = es7154_modes,
    267	.mode_num = ARRAY_SIZE(es7154_modes),
    268	.extra_routes = es7154_extra_routes,
    269	.extra_route_num = ARRAY_SIZE(es7154_extra_routes),
    270	.extra_widgets = es7154_extra_widgets,
    271	.extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
    272};
    273
    274static int es7134_probe(struct platform_device *pdev)
    275{
    276	struct device *dev = &pdev->dev;
    277	struct es7134_data *priv;
    278
    279	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
    280	if (!priv)
    281		return -ENOMEM;
    282	platform_set_drvdata(pdev, priv);
    283
    284	priv->chip = of_device_get_match_data(dev);
    285	if (!priv->chip) {
    286		dev_err(dev, "failed to match device\n");
    287		return -ENODEV;
    288	}
    289
    290	return devm_snd_soc_register_component(&pdev->dev,
    291				      &es7134_component_driver,
    292				      priv->chip->dai_drv, 1);
    293}
    294
    295#ifdef CONFIG_OF
    296static const struct of_device_id es7134_ids[] = {
    297	{ .compatible = "everest,es7134", .data = &es7134_chip },
    298	{ .compatible = "everest,es7144", .data = &es7134_chip },
    299	{ .compatible = "everest,es7154", .data = &es7154_chip },
    300	{ }
    301};
    302MODULE_DEVICE_TABLE(of, es7134_ids);
    303#endif
    304
    305static struct platform_driver es7134_driver = {
    306	.driver = {
    307		.name = "es7134",
    308		.of_match_table = of_match_ptr(es7134_ids),
    309	},
    310	.probe = es7134_probe,
    311};
    312
    313module_platform_driver(es7134_driver);
    314
    315MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
    316MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
    317MODULE_LICENSE("GPL");