1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Machine driver for AMD Stoney platform using ES8336 Codec
4 *
5 * Copyright 2022 Advanced Micro Devices, Inc.
6 */
7
8#include <sound/core.h>
9#include <sound/soc.h>
10#include <sound/pcm.h>
11#include <sound/pcm_params.h>
12#include <sound/soc-dapm.h>
13#include <sound/jack.h>
14#include <linux/gpio.h>
15#include <linux/device.h>
16#include <linux/dmi.h>
17#include <linux/gpio/consumer.h>
18#include <linux/gpio/machine.h>
19#include <linux/i2c.h>
20#include <linux/input.h>
21#include <linux/module.h>
22#include <linux/platform_device.h>
23#include <linux/acpi.h>
24
25#include "acp.h"
26
27#define DUAL_CHANNEL	2
28#define DRV_NAME "acp2x_mach"
29#define ST_JADEITE	1
30#define ES8336_PLL_FREQ (48000 * 256)
31
32static unsigned long acp2x_machine_id;
33static struct snd_soc_jack st_jack;
34static struct device *codec_dev;
35static struct gpio_desc *gpio_pa;
36
37static int sof_es8316_speaker_power_event(struct snd_soc_dapm_widget *w,
38					  struct snd_kcontrol *kcontrol, int event)
39{
40	if (SND_SOC_DAPM_EVENT_ON(event))
41		gpiod_set_value_cansleep(gpio_pa, true);
42	else
43		gpiod_set_value_cansleep(gpio_pa, false);
44
45	return 0;
46}
47
48static struct snd_soc_jack_pin st_es8316_jack_pins[] = {
49	{
50		.pin	= "Headphone",
51		.mask	= SND_JACK_HEADPHONE,
52	},
53	{
54		.pin	= "Headset Mic",
55		.mask	= SND_JACK_MICROPHONE,
56	},
57};
58
59static int st_es8336_init(struct snd_soc_pcm_runtime *rtd)
60{
61	int ret;
62	struct snd_soc_card *card;
63	struct snd_soc_component *codec;
64
65	codec = asoc_rtd_to_codec(rtd, 0)->component;
66	card = rtd->card;
67
68	ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET | SND_JACK_BTN_0,
69					 &st_jack, st_es8316_jack_pins,
70					 ARRAY_SIZE(st_es8316_jack_pins));
71	if (ret) {
72		dev_err(card->dev, "HP jack creation failed %d\n", ret);
73		return ret;
74	}
75	snd_jack_set_key(st_jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
76	ret = snd_soc_component_set_jack(codec, &st_jack, NULL);
77	if (ret) {
78		dev_err(rtd->dev, "Headset Jack call-back failed: %d\n", ret);
79		return ret;
80	}
81	return 0;
82}
83
84static const unsigned int st_channels[] = {
85	DUAL_CHANNEL,
86};
87
88static const unsigned int st_rates[] = {
89	48000,
90};
91
92static const struct snd_pcm_hw_constraint_list st_constraints_rates = {
93	.count = ARRAY_SIZE(st_rates),
94	.list  = st_rates,
95	.mask = 0,
96};
97
98static const struct snd_pcm_hw_constraint_list st_constraints_channels = {
99	.count = ARRAY_SIZE(st_channels),
100	.list = st_channels,
101	.mask = 0,
102};
103
104static int st_es8336_codec_startup(struct snd_pcm_substream *substream)
105{
106	struct snd_pcm_runtime *runtime;
107	struct snd_soc_pcm_runtime *rtd;
108	struct snd_soc_card *card;
109	struct acp_platform_info *machine;
110	struct snd_soc_dai *codec_dai;
111	int ret;
112
113	runtime = substream->runtime;
114	rtd = asoc_substream_to_rtd(substream);
115	card = rtd->card;
116	machine = snd_soc_card_get_drvdata(card);
117	codec_dai = asoc_rtd_to_codec(rtd, 0);
118	ret = snd_soc_dai_set_sysclk(codec_dai, 0, ES8336_PLL_FREQ, SND_SOC_CLOCK_IN);
119	if (ret < 0) {
120		dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
121		return ret;
122	}
123	runtime->hw.channels_max = DUAL_CHANNEL;
124	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
125				   &st_constraints_channels);
126	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
127				   &st_constraints_rates);
128
129	machine->play_i2s_instance = I2S_MICSP_INSTANCE;
130	machine->cap_i2s_instance = I2S_MICSP_INSTANCE;
131	machine->capture_channel = CAP_CHANNEL0;
132	return 0;
133}
134
135static const struct snd_soc_ops st_es8336_ops = {
136	.startup = st_es8336_codec_startup,
137};
138
139SND_SOC_DAILINK_DEF(designware1,
140		    DAILINK_COMP_ARRAY(COMP_CPU("designware-i2s.2.auto")));
141SND_SOC_DAILINK_DEF(codec,
142		    DAILINK_COMP_ARRAY(COMP_CODEC("i2c-ESSX8336:00", "ES8316 HiFi")));
143SND_SOC_DAILINK_DEF(platform,
144		    DAILINK_COMP_ARRAY(COMP_PLATFORM("acp_audio_dma.1.auto")));
145
146static struct snd_soc_dai_link st_dai_es8336[] = {
147	{
148		.name = "amdes8336",
149		.stream_name = "ES8336 HiFi Play",
150		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
151				| SND_SOC_DAIFMT_CBP_CFP,
152		.trigger_stop = SND_SOC_TRIGGER_ORDER_LDC,
153		.dpcm_capture = 1,
154		.dpcm_playback = 1,
155		.init = st_es8336_init,
156		.ops = &st_es8336_ops,
157		SND_SOC_DAILINK_REG(designware1, codec, platform),
158	},
159};
160
161static const struct snd_soc_dapm_widget st_widgets[] = {
162	SND_SOC_DAPM_SPK("Speaker", NULL),
163	SND_SOC_DAPM_HP("Headphone", NULL),
164	SND_SOC_DAPM_MIC("Headset Mic", NULL),
165	SND_SOC_DAPM_MIC("Internal Mic", NULL),
166
167	SND_SOC_DAPM_SUPPLY("Speaker Power", SND_SOC_NOPM, 0, 0,
168			    sof_es8316_speaker_power_event,
169			    SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
170};
171
172static const struct snd_soc_dapm_route st_audio_route[] = {
173	{"Speaker", NULL, "HPOL"},
174	{"Speaker", NULL, "HPOR"},
175	{"Headphone", NULL, "HPOL"},
176	{"Headphone", NULL, "HPOR"},
177	{"MIC1", NULL, "Headset Mic"},
178	{"MIC2", NULL, "Internal Mic"},
179	{"Speaker", NULL, "Speaker Power"},
180};
181
182static const struct snd_kcontrol_new st_mc_controls[] = {
183	SOC_DAPM_PIN_SWITCH("Speaker"),
184	SOC_DAPM_PIN_SWITCH("Headphone"),
185	SOC_DAPM_PIN_SWITCH("Headset Mic"),
186	SOC_DAPM_PIN_SWITCH("Internal Mic"),
187};
188
189static const struct acpi_gpio_params pa_enable_gpio = { 0, 0, false };
190static const struct acpi_gpio_mapping acpi_es8336_gpios[] = {
191	{ "pa-enable-gpios", &pa_enable_gpio, 1 },
192	{ }
193};
194
195static int st_es8336_late_probe(struct snd_soc_card *card)
196{
197	struct acpi_device *adev;
198	int ret;
199
200	adev = acpi_dev_get_first_match_dev("ESSX8336", NULL, -1);
201	if (!adev)
202		return -ENODEV;
203
204	codec_dev = acpi_get_first_physical_node(adev);
205	acpi_dev_put(adev);
206	if (!codec_dev)
207		dev_err(card->dev, "can not find codec dev\n");
208
209	ret = devm_acpi_dev_add_driver_gpios(codec_dev, acpi_es8336_gpios);
210	if (ret)
211		dev_warn(card->dev, "Failed to add driver gpios\n");
212
213	gpio_pa = gpiod_get_optional(codec_dev, "pa-enable", GPIOD_OUT_LOW);
214	if (IS_ERR(gpio_pa)) {
215		ret = dev_err_probe(card->dev, PTR_ERR(gpio_pa),
216				    "could not get pa-enable GPIO\n");
217		put_device(codec_dev);
218		return ret;
219	}
220	return 0;
221}
222
223static struct snd_soc_card st_card = {
224	.name = "acpes8336",
225	.owner = THIS_MODULE,
226	.dai_link = st_dai_es8336,
227	.num_links = ARRAY_SIZE(st_dai_es8336),
228	.dapm_widgets = st_widgets,
229	.num_dapm_widgets = ARRAY_SIZE(st_widgets),
230	.dapm_routes = st_audio_route,
231	.num_dapm_routes = ARRAY_SIZE(st_audio_route),
232	.controls = st_mc_controls,
233	.num_controls = ARRAY_SIZE(st_mc_controls),
234	.late_probe = st_es8336_late_probe,
235};
236
237static int st_es8336_quirk_cb(const struct dmi_system_id *id)
238{
239	acp2x_machine_id = ST_JADEITE;
240	return 1;
241}
242
243static const struct dmi_system_id st_es8336_quirk_table[] = {
244	{
245		.callback = st_es8336_quirk_cb,
246		.matches = {
247			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMD"),
248			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Jadeite"),
249		},
250	},
251	{
252		.callback = st_es8336_quirk_cb,
253		.matches = {
254			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "IP3 Technology CO.,Ltd."),
255			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ASN1D"),
256		},
257	},
258	{
259		.callback = st_es8336_quirk_cb,
260		.matches = {
261			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Standard"),
262			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ASN10"),
263		},
264	},
265	{}
266};
267
268static int st_es8336_probe(struct platform_device *pdev)
269{
270	int ret;
271	struct snd_soc_card *card;
272	struct acp_platform_info *machine;
273
274	machine = devm_kzalloc(&pdev->dev, sizeof(struct acp_platform_info), GFP_KERNEL);
275	if (!machine)
276		return -ENOMEM;
277
278	dmi_check_system(st_es8336_quirk_table);
279	switch (acp2x_machine_id) {
280	case ST_JADEITE:
281		card = &st_card;
282		st_card.dev = &pdev->dev;
283		break;
284	default:
285		return -ENODEV;
286	}
287
288	platform_set_drvdata(pdev, card);
289	snd_soc_card_set_drvdata(card, machine);
290	ret = devm_snd_soc_register_card(&pdev->dev, &st_card);
291	if (ret) {
292		return dev_err_probe(&pdev->dev, ret,
293				     "devm_snd_soc_register_card(%s) failed\n",
294				     card->name);
295	}
296	return 0;
297}
298
299#ifdef CONFIG_ACPI
300static const struct acpi_device_id st_audio_acpi_match[] = {
301	{"AMDI8336", 0},
302	{},
303};
304MODULE_DEVICE_TABLE(acpi, st_audio_acpi_match);
305#endif
306
307static struct platform_driver st_mach_driver = {
308	.driver = {
309		.name = "st-es8316",
310		.acpi_match_table = ACPI_PTR(st_audio_acpi_match),
311		.pm = &snd_soc_pm_ops,
312	},
313	.probe = st_es8336_probe,
314};
315
316module_platform_driver(st_mach_driver);
317
318MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
319MODULE_DESCRIPTION("st-es8316 audio support");
320MODULE_LICENSE("GPL v2");
321