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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wm9705.c (12290B)


      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * wm9705.c  --  ALSA Soc WM9705 codec support
      4 *
      5 * Copyright 2008 Ian Molton <spyro@f2s.com>
      6 */
      7
      8#include <linux/init.h>
      9#include <linux/slab.h>
     10#include <linux/mfd/wm97xx.h>
     11#include <linux/module.h>
     12#include <linux/kernel.h>
     13#include <linux/device.h>
     14#include <linux/regmap.h>
     15#include <sound/core.h>
     16#include <sound/pcm.h>
     17#include <sound/ac97_codec.h>
     18#include <sound/ac97/codec.h>
     19#include <sound/ac97/compat.h>
     20#include <sound/initval.h>
     21#include <sound/soc.h>
     22
     23#define WM9705_VENDOR_ID 0x574d4c05
     24#define WM9705_VENDOR_ID_MASK 0xffffffff
     25
     26struct wm9705_priv {
     27	struct snd_ac97 *ac97;
     28	struct wm97xx_platform_data *mfd_pdata;
     29};
     30
     31static const struct reg_default wm9705_reg_defaults[] = {
     32	{ 0x02, 0x8000 },
     33	{ 0x04, 0x8000 },
     34	{ 0x06, 0x8000 },
     35	{ 0x0a, 0x8000 },
     36	{ 0x0c, 0x8008 },
     37	{ 0x0e, 0x8008 },
     38	{ 0x10, 0x8808 },
     39	{ 0x12, 0x8808 },
     40	{ 0x14, 0x8808 },
     41	{ 0x16, 0x8808 },
     42	{ 0x18, 0x8808 },
     43	{ 0x1a, 0x0000 },
     44	{ 0x1c, 0x8000 },
     45	{ 0x20, 0x0000 },
     46	{ 0x22, 0x0000 },
     47	{ 0x26, 0x000f },
     48	{ 0x28, 0x0605 },
     49	{ 0x2a, 0x0000 },
     50	{ 0x2c, 0xbb80 },
     51	{ 0x32, 0xbb80 },
     52	{ 0x34, 0x2000 },
     53	{ 0x5a, 0x0000 },
     54	{ 0x5c, 0x0000 },
     55	{ 0x72, 0x0808 },
     56	{ 0x74, 0x0000 },
     57	{ 0x76, 0x0006 },
     58	{ 0x78, 0x0000 },
     59	{ 0x7a, 0x0000 },
     60};
     61
     62static const struct regmap_config wm9705_regmap_config = {
     63	.reg_bits = 16,
     64	.reg_stride = 2,
     65	.val_bits = 16,
     66	.max_register = 0x7e,
     67	.cache_type = REGCACHE_RBTREE,
     68
     69	.volatile_reg = regmap_ac97_default_volatile,
     70
     71	.reg_defaults = wm9705_reg_defaults,
     72	.num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
     73};
     74
     75static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
     76	SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
     77	SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
     78	SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
     79	SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
     80	SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
     81	SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
     82	SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
     83	SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
     84	SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
     85	SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
     86	SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
     87	SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
     88	SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
     89	SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
     90	SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
     91	SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
     92};
     93
     94static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
     95static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
     96	"Line", "Stereo Mix", "Mono Mix", "Phone"};
     97
     98static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
     99			    AC97_GENERAL_PURPOSE, 8, wm9705_mic);
    100static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
    101			    AC97_REC_SEL, 8, wm9705_rec_sel);
    102static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
    103			    AC97_REC_SEL, 0, wm9705_rec_sel);
    104
    105/* Headphone Mixer */
    106static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
    107	SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
    108	SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
    109	SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
    110	SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
    111	SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
    112};
    113
    114/* Mic source */
    115static const struct snd_kcontrol_new wm9705_mic_src_controls =
    116	SOC_DAPM_ENUM("Route", wm9705_enum_mic);
    117
    118/* Capture source */
    119static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
    120	SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
    121static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
    122	SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
    123
    124/* DAPM widgets */
    125static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
    126	SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
    127		&wm9705_mic_src_controls),
    128	SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
    129		&wm9705_capture_selectl_controls),
    130	SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
    131		&wm9705_capture_selectr_controls),
    132	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
    133		SND_SOC_NOPM, 0, 0),
    134	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
    135		SND_SOC_NOPM, 0, 0),
    136	SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
    137		&wm9705_hp_mixer_controls[0],
    138		ARRAY_SIZE(wm9705_hp_mixer_controls)),
    139	SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
    140	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
    141	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
    142	SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    143	SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    144	SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    145	SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    146	SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    147	SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    148	SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    149	SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    150	SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    151	SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
    152	SND_SOC_DAPM_OUTPUT("HPOUTL"),
    153	SND_SOC_DAPM_OUTPUT("HPOUTR"),
    154	SND_SOC_DAPM_OUTPUT("LOUT"),
    155	SND_SOC_DAPM_OUTPUT("ROUT"),
    156	SND_SOC_DAPM_OUTPUT("MONOOUT"),
    157	SND_SOC_DAPM_INPUT("PHONE"),
    158	SND_SOC_DAPM_INPUT("LINEINL"),
    159	SND_SOC_DAPM_INPUT("LINEINR"),
    160	SND_SOC_DAPM_INPUT("CDINL"),
    161	SND_SOC_DAPM_INPUT("CDINR"),
    162	SND_SOC_DAPM_INPUT("PCBEEP"),
    163	SND_SOC_DAPM_INPUT("MIC1"),
    164	SND_SOC_DAPM_INPUT("MIC2"),
    165};
    166
    167/* Audio map
    168 * WM9705 has no switches to disable the route from the inputs to the HP mixer
    169 * so in order to prevent active inputs from forcing the audio outputs to be
    170 * constantly enabled, we use the mutes on those inputs to simulate such
    171 * controls.
    172 */
    173static const struct snd_soc_dapm_route wm9705_audio_map[] = {
    174	/* HP mixer */
    175	{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
    176	{"HP Mixer", "CD Playback Switch", "CD PGA"},
    177	{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
    178	{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
    179	{"HP Mixer", "Line Playback Switch", "Line PGA"},
    180	{"HP Mixer", NULL, "Left DAC"},
    181	{"HP Mixer", NULL, "Right DAC"},
    182
    183	/* mono mixer */
    184	{"Mono Mixer", NULL, "HP Mixer"},
    185
    186	/* outputs */
    187	{"Headphone PGA", NULL, "HP Mixer"},
    188	{"HPOUTL", NULL, "Headphone PGA"},
    189	{"HPOUTR", NULL, "Headphone PGA"},
    190	{"Line out PGA", NULL, "HP Mixer"},
    191	{"LOUT", NULL, "Line out PGA"},
    192	{"ROUT", NULL, "Line out PGA"},
    193	{"Mono PGA", NULL, "Mono Mixer"},
    194	{"MONOOUT", NULL, "Mono PGA"},
    195
    196	/* inputs */
    197	{"CD PGA", NULL, "CDINL"},
    198	{"CD PGA", NULL, "CDINR"},
    199	{"Line PGA", NULL, "LINEINL"},
    200	{"Line PGA", NULL, "LINEINR"},
    201	{"Phone PGA", NULL, "PHONE"},
    202	{"Mic Source", "Mic 1", "MIC1"},
    203	{"Mic Source", "Mic 2", "MIC2"},
    204	{"Mic PGA", NULL, "Mic Source"},
    205	{"PCBEEP PGA", NULL, "PCBEEP"},
    206
    207	/* Left capture selector */
    208	{"Left Capture Source", "Mic", "Mic Source"},
    209	{"Left Capture Source", "CD", "CDINL"},
    210	{"Left Capture Source", "Line", "LINEINL"},
    211	{"Left Capture Source", "Stereo Mix", "HP Mixer"},
    212	{"Left Capture Source", "Mono Mix", "HP Mixer"},
    213	{"Left Capture Source", "Phone", "PHONE"},
    214
    215	/* Right capture source */
    216	{"Right Capture Source", "Mic", "Mic Source"},
    217	{"Right Capture Source", "CD", "CDINR"},
    218	{"Right Capture Source", "Line", "LINEINR"},
    219	{"Right Capture Source", "Stereo Mix", "HP Mixer"},
    220	{"Right Capture Source", "Mono Mix", "HP Mixer"},
    221	{"Right Capture Source", "Phone", "PHONE"},
    222
    223	{"ADC PGA", NULL, "Left Capture Source"},
    224	{"ADC PGA", NULL, "Right Capture Source"},
    225
    226	/* ADC's */
    227	{"Left ADC",  NULL, "ADC PGA"},
    228	{"Right ADC", NULL, "ADC PGA"},
    229};
    230
    231static int ac97_prepare(struct snd_pcm_substream *substream,
    232			struct snd_soc_dai *dai)
    233{
    234	struct snd_soc_component *component = dai->component;
    235	int reg;
    236
    237	snd_soc_component_update_bits(component, AC97_EXTENDED_STATUS, 0x1, 0x1);
    238
    239	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
    240		reg = AC97_PCM_FRONT_DAC_RATE;
    241	else
    242		reg = AC97_PCM_LR_ADC_RATE;
    243
    244	return snd_soc_component_write(component, reg, substream->runtime->rate);
    245}
    246
    247#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
    248			SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
    249			SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
    250			SNDRV_PCM_RATE_48000)
    251
    252static const struct snd_soc_dai_ops wm9705_dai_ops = {
    253	.prepare	= ac97_prepare,
    254};
    255
    256static struct snd_soc_dai_driver wm9705_dai[] = {
    257	{
    258		.name = "wm9705-hifi",
    259		.playback = {
    260			.stream_name = "HiFi Playback",
    261			.channels_min = 1,
    262			.channels_max = 2,
    263			.rates = WM9705_AC97_RATES,
    264			.formats = SND_SOC_STD_AC97_FMTS,
    265		},
    266		.capture = {
    267			.stream_name = "HiFi Capture",
    268			.channels_min = 1,
    269			.channels_max = 2,
    270			.rates = WM9705_AC97_RATES,
    271			.formats = SND_SOC_STD_AC97_FMTS,
    272		},
    273		.ops = &wm9705_dai_ops,
    274	},
    275	{
    276		.name = "wm9705-aux",
    277		.playback = {
    278			.stream_name = "Aux Playback",
    279			.channels_min = 1,
    280			.channels_max = 1,
    281			.rates = WM9705_AC97_RATES,
    282			.formats = SNDRV_PCM_FMTBIT_S16_LE,
    283		},
    284	}
    285};
    286
    287#ifdef CONFIG_PM
    288static int wm9705_soc_suspend(struct snd_soc_component *component)
    289{
    290	regcache_cache_bypass(component->regmap, true);
    291	snd_soc_component_write(component, AC97_POWERDOWN, 0xffff);
    292	regcache_cache_bypass(component->regmap, false);
    293
    294	return 0;
    295}
    296
    297static int wm9705_soc_resume(struct snd_soc_component *component)
    298{
    299	struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
    300	int ret;
    301
    302	ret = snd_ac97_reset(wm9705->ac97, true, WM9705_VENDOR_ID,
    303		WM9705_VENDOR_ID_MASK);
    304	if (ret < 0)
    305		return ret;
    306
    307	snd_soc_component_cache_sync(component);
    308
    309	return 0;
    310}
    311#else
    312#define wm9705_soc_suspend NULL
    313#define wm9705_soc_resume NULL
    314#endif
    315
    316static int wm9705_soc_probe(struct snd_soc_component *component)
    317{
    318	struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
    319	struct regmap *regmap;
    320
    321	if (wm9705->mfd_pdata) {
    322		wm9705->ac97 = wm9705->mfd_pdata->ac97;
    323		regmap = wm9705->mfd_pdata->regmap;
    324	} else if (IS_ENABLED(CONFIG_SND_SOC_AC97_BUS)) {
    325		wm9705->ac97 = snd_soc_new_ac97_component(component, WM9705_VENDOR_ID,
    326						      WM9705_VENDOR_ID_MASK);
    327		if (IS_ERR(wm9705->ac97)) {
    328			dev_err(component->dev, "Failed to register AC97 codec\n");
    329			return PTR_ERR(wm9705->ac97);
    330		}
    331
    332		regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
    333		if (IS_ERR(regmap)) {
    334			snd_soc_free_ac97_component(wm9705->ac97);
    335			return PTR_ERR(regmap);
    336		}
    337	} else {
    338		return -ENXIO;
    339	}
    340
    341	snd_soc_component_set_drvdata(component, wm9705->ac97);
    342	snd_soc_component_init_regmap(component, regmap);
    343
    344	return 0;
    345}
    346
    347static void wm9705_soc_remove(struct snd_soc_component *component)
    348{
    349	struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
    350
    351	if (IS_ENABLED(CONFIG_SND_SOC_AC97_BUS) && !wm9705->mfd_pdata) {
    352		snd_soc_component_exit_regmap(component);
    353		snd_soc_free_ac97_component(wm9705->ac97);
    354	}
    355}
    356
    357static const struct snd_soc_component_driver soc_component_dev_wm9705 = {
    358	.probe			= wm9705_soc_probe,
    359	.remove			= wm9705_soc_remove,
    360	.suspend		= wm9705_soc_suspend,
    361	.resume			= wm9705_soc_resume,
    362	.controls		= wm9705_snd_ac97_controls,
    363	.num_controls		= ARRAY_SIZE(wm9705_snd_ac97_controls),
    364	.dapm_widgets		= wm9705_dapm_widgets,
    365	.num_dapm_widgets	= ARRAY_SIZE(wm9705_dapm_widgets),
    366	.dapm_routes		= wm9705_audio_map,
    367	.num_dapm_routes	= ARRAY_SIZE(wm9705_audio_map),
    368	.idle_bias_on		= 1,
    369	.use_pmdown_time	= 1,
    370	.endianness		= 1,
    371	.non_legacy_dai_naming	= 1,
    372};
    373
    374static int wm9705_probe(struct platform_device *pdev)
    375{
    376	struct wm9705_priv *wm9705;
    377
    378	wm9705 = devm_kzalloc(&pdev->dev, sizeof(*wm9705), GFP_KERNEL);
    379	if (wm9705 == NULL)
    380		return -ENOMEM;
    381
    382	wm9705->mfd_pdata = dev_get_platdata(&pdev->dev);
    383	platform_set_drvdata(pdev, wm9705);
    384
    385	return devm_snd_soc_register_component(&pdev->dev,
    386			&soc_component_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
    387}
    388
    389static struct platform_driver wm9705_codec_driver = {
    390	.driver = {
    391			.name = "wm9705-codec",
    392	},
    393
    394	.probe = wm9705_probe,
    395};
    396
    397module_platform_driver(wm9705_codec_driver);
    398
    399MODULE_DESCRIPTION("ASoC WM9705 driver");
    400MODULE_AUTHOR("Ian Molton");
    401MODULE_LICENSE("GPL v2");