1/*
2 *  cht-bsw-max98090.c - ASoc Machine driver for Intel Cherryview-based
3 *  platforms Cherrytrail and Braswell, with max98090 & TI codec.
4 *
5 *  Copyright (C) 2015 Intel Corp
6 *  Author: Fang, Yang A <yang.a.fang@intel.com>
7 *  This file is modified from cht_bsw_rt5645.c
8 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 *
10 *  This program is free software; you can redistribute it and/or modify
11 *  it under the terms of the GNU General Public License as published by
12 *  the Free Software Foundation; version 2 of the License.
13 *
14 *  This program is distributed in the hope that it will be useful, but
15 *  WITHOUT ANY WARRANTY; without even the implied warranty of
16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 *  General Public License for more details.
18 *
19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
20 */
21
22#include <linux/module.h>
23#include <linux/platform_device.h>
24#include <linux/slab.h>
25#include <linux/acpi.h>
26#include <sound/pcm.h>
27#include <sound/pcm_params.h>
28#include <sound/soc.h>
29#include <sound/jack.h>
30#include "../../codecs/max98090.h"
31#include "../atom/sst-atom-controls.h"
32#include "../../codecs/ts3a227e.h"
33
34#define CHT_PLAT_CLK_3_HZ	19200000
35#define CHT_CODEC_DAI	"HiFi"
36
37struct cht_mc_private {
38	struct snd_soc_jack jack;
39	bool ts3a227e_present;
40};
41
42static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
43{
44	int i;
45
46	for (i = 0; i < card->num_rtd; i++) {
47		struct snd_soc_pcm_runtime *rtd;
48
49		rtd = card->rtd + i;
50		if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
51			     strlen(CHT_CODEC_DAI)))
52			return rtd->codec_dai;
53	}
54	return NULL;
55}
56
57static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
58	SND_SOC_DAPM_HP("Headphone", NULL),
59	SND_SOC_DAPM_MIC("Headset Mic", NULL),
60	SND_SOC_DAPM_MIC("Int Mic", NULL),
61	SND_SOC_DAPM_SPK("Ext Spk", NULL),
62};
63
64static const struct snd_soc_dapm_route cht_audio_map[] = {
65	{"IN34", NULL, "Headset Mic"},
66	{"Headset Mic", NULL, "MICBIAS"},
67	{"DMICL", NULL, "Int Mic"},
68	{"Headphone", NULL, "HPL"},
69	{"Headphone", NULL, "HPR"},
70	{"Ext Spk", NULL, "SPKL"},
71	{"Ext Spk", NULL, "SPKR"},
72	{"HiFi Playback", NULL, "ssp2 Tx"},
73	{"ssp2 Tx", NULL, "codec_out0"},
74	{"ssp2 Tx", NULL, "codec_out1"},
75	{"codec_in0", NULL, "ssp2 Rx" },
76	{"codec_in1", NULL, "ssp2 Rx" },
77	{"ssp2 Rx", NULL, "HiFi Capture"},
78};
79
80static const struct snd_kcontrol_new cht_mc_controls[] = {
81	SOC_DAPM_PIN_SWITCH("Headphone"),
82	SOC_DAPM_PIN_SWITCH("Headset Mic"),
83	SOC_DAPM_PIN_SWITCH("Int Mic"),
84	SOC_DAPM_PIN_SWITCH("Ext Spk"),
85};
86
87static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
88			     struct snd_pcm_hw_params *params)
89{
90	struct snd_soc_pcm_runtime *rtd = substream->private_data;
91	struct snd_soc_dai *codec_dai = rtd->codec_dai;
92	int ret;
93
94	ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
95				     CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
96	if (ret < 0) {
97		dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
98		return ret;
99	}
100
101	return 0;
102}
103
104static int cht_ti_jack_event(struct notifier_block *nb,
105		unsigned long event, void *data)
106{
107	struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
108	struct snd_soc_dapm_context *dapm = &jack->card->dapm;
109
110	if (event & SND_JACK_MICROPHONE) {
111		snd_soc_dapm_force_enable_pin(dapm, "SHDN");
112		snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
113		snd_soc_dapm_sync(dapm);
114	} else {
115		snd_soc_dapm_disable_pin(dapm, "MICBIAS");
116		snd_soc_dapm_disable_pin(dapm, "SHDN");
117		snd_soc_dapm_sync(dapm);
118	}
119
120	return 0;
121}
122
123static struct notifier_block cht_jack_nb = {
124	.notifier_call = cht_ti_jack_event,
125};
126
127static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
128{
129	int ret;
130	int jack_type;
131	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
132	struct snd_soc_jack *jack = &ctx->jack;
133
134	/**
135	* TI supports 4 butons headset detection
136	* KEY_MEDIA
137	* KEY_VOICECOMMAND
138	* KEY_VOLUMEUP
139	* KEY_VOLUMEDOWN
140	*/
141	if (ctx->ts3a227e_present)
142		jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
143					SND_JACK_BTN_0 | SND_JACK_BTN_1 |
144					SND_JACK_BTN_2 | SND_JACK_BTN_3;
145	else
146		jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
147
148	ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
149					jack_type, jack, NULL, 0);
150
151	if (ret) {
152		dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
153		return ret;
154	}
155
156	if (ctx->ts3a227e_present)
157		snd_soc_jack_notifier_register(jack, &cht_jack_nb);
158
159	return ret;
160}
161
162static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
163			    struct snd_pcm_hw_params *params)
164{
165	struct snd_interval *rate = hw_param_interval(params,
166			SNDRV_PCM_HW_PARAM_RATE);
167	struct snd_interval *channels = hw_param_interval(params,
168						SNDRV_PCM_HW_PARAM_CHANNELS);
169	int ret = 0;
170	unsigned int fmt = 0;
171
172	ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
173	if (ret < 0) {
174		dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
175		return ret;
176	}
177
178	fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF
179				| SND_SOC_DAIFMT_CBS_CFS;
180
181	ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
182	if (ret < 0) {
183		dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
184		return ret;
185	}
186
187	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
188	rate->min = rate->max = 48000;
189	channels->min = channels->max = 2;
190
191	/* set SSP2 to 24-bit */
192	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
193	return 0;
194}
195
196static int cht_aif1_startup(struct snd_pcm_substream *substream)
197{
198	return snd_pcm_hw_constraint_single(substream->runtime,
199			SNDRV_PCM_HW_PARAM_RATE, 48000);
200}
201
202static int cht_max98090_headset_init(struct snd_soc_component *component)
203{
204	struct snd_soc_card *card = component->card;
205	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
206
207	return ts3a227e_enable_jack_detect(component, &ctx->jack);
208}
209
210static struct snd_soc_ops cht_aif1_ops = {
211	.startup = cht_aif1_startup,
212};
213
214static struct snd_soc_ops cht_be_ssp2_ops = {
215	.hw_params = cht_aif1_hw_params,
216};
217
218static struct snd_soc_aux_dev cht_max98090_headset_dev = {
219	.name = "Headset Chip",
220	.init = cht_max98090_headset_init,
221	.codec_name = "i2c-104C227E:00",
222};
223
224static struct snd_soc_dai_link cht_dailink[] = {
225	[MERR_DPCM_AUDIO] = {
226		.name = "Audio Port",
227		.stream_name = "Audio",
228		.cpu_dai_name = "media-cpu-dai",
229		.codec_dai_name = "snd-soc-dummy-dai",
230		.codec_name = "snd-soc-dummy",
231		.platform_name = "sst-mfld-platform",
232		.nonatomic = true,
233		.dynamic = 1,
234		.dpcm_playback = 1,
235		.dpcm_capture = 1,
236		.ops = &cht_aif1_ops,
237	},
238	[MERR_DPCM_COMPR] = {
239		.name = "Compressed Port",
240		.stream_name = "Compress",
241		.cpu_dai_name = "compress-cpu-dai",
242		.codec_dai_name = "snd-soc-dummy-dai",
243		.codec_name = "snd-soc-dummy",
244		.platform_name = "sst-mfld-platform",
245	},
246	/* back ends */
247	{
248		.name = "SSP2-Codec",
249		.be_id = 1,
250		.cpu_dai_name = "ssp2-port",
251		.platform_name = "sst-mfld-platform",
252		.no_pcm = 1,
253		.codec_dai_name = "HiFi",
254		.codec_name = "i2c-193C9890:00",
255		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
256					| SND_SOC_DAIFMT_CBS_CFS,
257		.init = cht_codec_init,
258		.be_hw_params_fixup = cht_codec_fixup,
259		.dpcm_playback = 1,
260		.dpcm_capture = 1,
261		.ops = &cht_be_ssp2_ops,
262	},
263};
264
265/* SoC card */
266static struct snd_soc_card snd_soc_card_cht = {
267	.name = "chtmax98090",
268	.owner = THIS_MODULE,
269	.dai_link = cht_dailink,
270	.num_links = ARRAY_SIZE(cht_dailink),
271	.aux_dev = &cht_max98090_headset_dev,
272	.num_aux_devs = 1,
273	.dapm_widgets = cht_dapm_widgets,
274	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
275	.dapm_routes = cht_audio_map,
276	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
277	.controls = cht_mc_controls,
278	.num_controls = ARRAY_SIZE(cht_mc_controls),
279};
280
281static acpi_status snd_acpi_codec_match(acpi_handle handle, u32 level,
282						void *context, void **ret)
283{
284	*(bool *)context = true;
285	return AE_OK;
286}
287
288static int snd_cht_mc_probe(struct platform_device *pdev)
289{
290	int ret_val = 0;
291	bool found = false;
292	struct cht_mc_private *drv;
293
294	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
295	if (!drv)
296		return -ENOMEM;
297
298	if (ACPI_SUCCESS(acpi_get_devices(
299					"104C227E",
300					snd_acpi_codec_match,
301					&found, NULL)) && found) {
302		drv->ts3a227e_present = true;
303	} else {
304		/* no need probe TI jack detection chip */
305		snd_soc_card_cht.aux_dev = NULL;
306		snd_soc_card_cht.num_aux_devs = 0;
307		drv->ts3a227e_present = false;
308	}
309
310	/* register the soc card */
311	snd_soc_card_cht.dev = &pdev->dev;
312	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
313	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
314	if (ret_val) {
315		dev_err(&pdev->dev,
316			"snd_soc_register_card failed %d\n", ret_val);
317		return ret_val;
318	}
319	platform_set_drvdata(pdev, &snd_soc_card_cht);
320	return ret_val;
321}
322
323static struct platform_driver snd_cht_mc_driver = {
324	.driver = {
325		.name = "cht-bsw-max98090",
326	},
327	.probe = snd_cht_mc_probe,
328};
329
330module_platform_driver(snd_cht_mc_driver)
331
332MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
333MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
334MODULE_LICENSE("GPL v2");
335MODULE_ALIAS("platform:cht-bsw-max98090");
336