cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

bytcht_da7213.c (8222B)


      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  bytcht-da7213.c - ASoc Machine driver for Intel Baytrail and
      4 *             Cherrytrail-based platforms, with Dialog DA7213 codec
      5 *
      6 *  Copyright (C) 2017 Intel Corporation
      7 *  Author: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
      8 *
      9 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     10 *
     11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     12 */
     13
     14#include <linux/module.h>
     15#include <linux/acpi.h>
     16#include <linux/platform_device.h>
     17#include <linux/slab.h>
     18#include <sound/pcm.h>
     19#include <sound/pcm_params.h>
     20#include <sound/soc.h>
     21#include <sound/soc-acpi.h>
     22#include "../../codecs/da7213.h"
     23#include "../atom/sst-atom-controls.h"
     24
     25static const struct snd_kcontrol_new controls[] = {
     26	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
     27	SOC_DAPM_PIN_SWITCH("Headset Mic"),
     28	SOC_DAPM_PIN_SWITCH("Mic"),
     29	SOC_DAPM_PIN_SWITCH("Aux In"),
     30};
     31
     32static const struct snd_soc_dapm_widget dapm_widgets[] = {
     33	SND_SOC_DAPM_HP("Headphone Jack", NULL),
     34	SND_SOC_DAPM_MIC("Headset Mic", NULL),
     35	SND_SOC_DAPM_MIC("Mic", NULL),
     36	SND_SOC_DAPM_LINE("Aux In", NULL),
     37};
     38
     39static const struct snd_soc_dapm_route audio_map[] = {
     40	{"Headphone Jack", NULL, "HPL"},
     41	{"Headphone Jack", NULL, "HPR"},
     42
     43	{"AUXL", NULL, "Aux In"},
     44	{"AUXR", NULL, "Aux In"},
     45
     46	/* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
     47	{"MIC1", NULL, "Headset Mic"},
     48	{"MIC2", NULL, "Mic"},
     49
     50	/* SOC-codec link */
     51	{"ssp2 Tx", NULL, "codec_out0"},
     52	{"ssp2 Tx", NULL, "codec_out1"},
     53	{"codec_in0", NULL, "ssp2 Rx"},
     54	{"codec_in1", NULL, "ssp2 Rx"},
     55
     56	{"Playback", NULL, "ssp2 Tx"},
     57	{"ssp2 Rx", NULL, "Capture"},
     58};
     59
     60static int codec_fixup(struct snd_soc_pcm_runtime *rtd,
     61		       struct snd_pcm_hw_params *params)
     62{
     63	int ret;
     64	struct snd_interval *rate = hw_param_interval(params,
     65			SNDRV_PCM_HW_PARAM_RATE);
     66	struct snd_interval *channels = hw_param_interval(params,
     67						SNDRV_PCM_HW_PARAM_CHANNELS);
     68
     69	/* The DSP will convert the FE rate to 48k, stereo, 24bits */
     70	rate->min = rate->max = 48000;
     71	channels->min = channels->max = 2;
     72
     73	/* set SSP2 to 24-bit */
     74	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
     75
     76	/*
     77	 * Default mode for SSP configuration is TDM 4 slot, override config
     78	 * with explicit setting to I2S 2ch 24-bit. The word length is set with
     79	 * dai_set_tdm_slot() since there is no other API exposed
     80	 */
     81	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
     82				  SND_SOC_DAIFMT_I2S     |
     83				  SND_SOC_DAIFMT_NB_NF   |
     84				  SND_SOC_DAIFMT_CBC_CFC);
     85	if (ret < 0) {
     86		dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
     87		return ret;
     88	}
     89
     90	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
     91	if (ret < 0) {
     92		dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
     93		return ret;
     94	}
     95
     96	return 0;
     97}
     98
     99static int aif1_startup(struct snd_pcm_substream *substream)
    100{
    101	return snd_pcm_hw_constraint_single(substream->runtime,
    102			SNDRV_PCM_HW_PARAM_RATE, 48000);
    103}
    104
    105static int aif1_hw_params(struct snd_pcm_substream *substream,
    106			  struct snd_pcm_hw_params *params)
    107{
    108	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
    109	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
    110	int ret;
    111
    112	ret = snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK,
    113				     19200000, SND_SOC_CLOCK_IN);
    114	if (ret < 0)
    115		dev_err(codec_dai->dev, "can't set codec sysclk configuration\n");
    116
    117	ret = snd_soc_dai_set_pll(codec_dai, 0,
    118			DA7213_SYSCLK_PLL_SRM, 0, DA7213_PLL_FREQ_OUT_98304000);
    119	if (ret < 0) {
    120		dev_err(codec_dai->dev, "failed to start PLL: %d\n", ret);
    121		return -EIO;
    122	}
    123
    124	return ret;
    125}
    126
    127static int aif1_hw_free(struct snd_pcm_substream *substream)
    128{
    129	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
    130	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
    131	int ret;
    132
    133	ret = snd_soc_dai_set_pll(codec_dai, 0,
    134				  DA7213_SYSCLK_MCLK, 0, 0);
    135	if (ret < 0) {
    136		dev_err(codec_dai->dev, "failed to stop PLL: %d\n", ret);
    137		return -EIO;
    138	}
    139
    140	return ret;
    141}
    142
    143static const struct snd_soc_ops aif1_ops = {
    144	.startup = aif1_startup,
    145};
    146
    147static const struct snd_soc_ops ssp2_ops = {
    148	.hw_params = aif1_hw_params,
    149	.hw_free = aif1_hw_free,
    150
    151};
    152
    153SND_SOC_DAILINK_DEF(dummy,
    154	DAILINK_COMP_ARRAY(COMP_DUMMY()));
    155
    156SND_SOC_DAILINK_DEF(media,
    157	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
    158
    159SND_SOC_DAILINK_DEF(deepbuffer,
    160	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
    161
    162SND_SOC_DAILINK_DEF(ssp2_port,
    163	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
    164SND_SOC_DAILINK_DEF(ssp2_codec,
    165	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-DLGS7213:00",
    166				      "da7213-hifi")));
    167
    168SND_SOC_DAILINK_DEF(platform,
    169	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
    170
    171static struct snd_soc_dai_link dailink[] = {
    172	[MERR_DPCM_AUDIO] = {
    173		.name = "Audio Port",
    174		.stream_name = "Audio",
    175		.nonatomic = true,
    176		.dynamic = 1,
    177		.dpcm_playback = 1,
    178		.dpcm_capture = 1,
    179		.ops = &aif1_ops,
    180		SND_SOC_DAILINK_REG(media, dummy, platform),
    181	},
    182	[MERR_DPCM_DEEP_BUFFER] = {
    183		.name = "Deep-Buffer Audio Port",
    184		.stream_name = "Deep-Buffer Audio",
    185		.nonatomic = true,
    186		.dynamic = 1,
    187		.dpcm_playback = 1,
    188		.ops = &aif1_ops,
    189		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
    190	},
    191	/* CODEC<->CODEC link */
    192	/* back ends */
    193	{
    194		.name = "SSP2-Codec",
    195		.id = 0,
    196		.no_pcm = 1,
    197		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
    198						| SND_SOC_DAIFMT_CBC_CFC,
    199		.be_hw_params_fixup = codec_fixup,
    200		.dpcm_playback = 1,
    201		.dpcm_capture = 1,
    202		.ops = &ssp2_ops,
    203		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
    204	},
    205};
    206
    207/* use space before codec name to simplify card ID, and simplify driver name */
    208#define SOF_CARD_NAME "bytcht da7213" /* card name will be 'sof-bytcht da7213' */
    209#define SOF_DRIVER_NAME "SOF"
    210
    211#define CARD_NAME "bytcht-da7213"
    212#define DRIVER_NAME NULL /* card name will be used for driver name */
    213
    214/* SoC card */
    215static struct snd_soc_card bytcht_da7213_card = {
    216	.name = CARD_NAME,
    217	.driver_name = DRIVER_NAME,
    218	.owner = THIS_MODULE,
    219	.dai_link = dailink,
    220	.num_links = ARRAY_SIZE(dailink),
    221	.controls = controls,
    222	.num_controls = ARRAY_SIZE(controls),
    223	.dapm_widgets = dapm_widgets,
    224	.num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
    225	.dapm_routes = audio_map,
    226	.num_dapm_routes = ARRAY_SIZE(audio_map),
    227};
    228
    229static char codec_name[SND_ACPI_I2C_ID_LEN];
    230
    231static int bytcht_da7213_probe(struct platform_device *pdev)
    232{
    233	struct snd_soc_card *card;
    234	struct snd_soc_acpi_mach *mach;
    235	const char *platform_name;
    236	struct acpi_device *adev;
    237	bool sof_parent;
    238	int dai_index = 0;
    239	int ret_val = 0;
    240	int i;
    241
    242	mach = pdev->dev.platform_data;
    243	card = &bytcht_da7213_card;
    244	card->dev = &pdev->dev;
    245
    246	/* fix index of codec dai */
    247	for (i = 0; i < ARRAY_SIZE(dailink); i++) {
    248		if (!strcmp(dailink[i].codecs->name, "i2c-DLGS7213:00")) {
    249			dai_index = i;
    250			break;
    251		}
    252	}
    253
    254	/* fixup codec name based on HID */
    255	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
    256	if (adev) {
    257		snprintf(codec_name, sizeof(codec_name),
    258			 "i2c-%s", acpi_dev_name(adev));
    259		put_device(&adev->dev);
    260		dailink[dai_index].codecs->name = codec_name;
    261	}
    262
    263	/* override platform name, if required */
    264	platform_name = mach->mach_params.platform;
    265
    266	ret_val = snd_soc_fixup_dai_links_platform_name(card, platform_name);
    267	if (ret_val)
    268		return ret_val;
    269
    270	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
    271
    272	/* set card and driver name */
    273	if (sof_parent) {
    274		bytcht_da7213_card.name = SOF_CARD_NAME;
    275		bytcht_da7213_card.driver_name = SOF_DRIVER_NAME;
    276	} else {
    277		bytcht_da7213_card.name = CARD_NAME;
    278		bytcht_da7213_card.driver_name = DRIVER_NAME;
    279	}
    280
    281	/* set pm ops */
    282	if (sof_parent)
    283		pdev->dev.driver->pm = &snd_soc_pm_ops;
    284
    285	ret_val = devm_snd_soc_register_card(&pdev->dev, card);
    286	if (ret_val) {
    287		dev_err(&pdev->dev,
    288			"snd_soc_register_card failed %d\n", ret_val);
    289		return ret_val;
    290	}
    291	platform_set_drvdata(pdev, card);
    292	return ret_val;
    293}
    294
    295static struct platform_driver bytcht_da7213_driver = {
    296	.driver = {
    297		.name = "bytcht_da7213",
    298	},
    299	.probe = bytcht_da7213_probe,
    300};
    301module_platform_driver(bytcht_da7213_driver);
    302
    303MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail+DA7213 Machine driver");
    304MODULE_AUTHOR("Pierre-Louis Bossart");
    305MODULE_LICENSE("GPL v2");
    306MODULE_ALIAS("platform:bytcht_da7213");