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 
37 struct cht_mc_private {
38 	struct snd_soc_jack jack;
39 	bool ts3a227e_present;
40 };
41 
42 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
43 {
44 	struct snd_soc_pcm_runtime *rtd;
45 
46 	list_for_each_entry(rtd, &card->rtd_list, list) {
47 		if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
48 			     strlen(CHT_CODEC_DAI)))
49 			return rtd->codec_dai;
50 	}
51 	return NULL;
52 }
53 
54 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
55 	SND_SOC_DAPM_HP("Headphone", NULL),
56 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
57 	SND_SOC_DAPM_MIC("Int Mic", NULL),
58 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
59 };
60 
61 static const struct snd_soc_dapm_route cht_audio_map[] = {
62 	{"IN34", NULL, "Headset Mic"},
63 	{"Headset Mic", NULL, "MICBIAS"},
64 	{"DMICL", NULL, "Int Mic"},
65 	{"Headphone", NULL, "HPL"},
66 	{"Headphone", NULL, "HPR"},
67 	{"Ext Spk", NULL, "SPKL"},
68 	{"Ext Spk", NULL, "SPKR"},
69 	{"HiFi Playback", NULL, "ssp2 Tx"},
70 	{"ssp2 Tx", NULL, "codec_out0"},
71 	{"ssp2 Tx", NULL, "codec_out1"},
72 	{"codec_in0", NULL, "ssp2 Rx" },
73 	{"codec_in1", NULL, "ssp2 Rx" },
74 	{"ssp2 Rx", NULL, "HiFi Capture"},
75 };
76 
77 static const struct snd_kcontrol_new cht_mc_controls[] = {
78 	SOC_DAPM_PIN_SWITCH("Headphone"),
79 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
80 	SOC_DAPM_PIN_SWITCH("Int Mic"),
81 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
82 };
83 
84 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
85 			     struct snd_pcm_hw_params *params)
86 {
87 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
88 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
89 	int ret;
90 
91 	ret = snd_soc_dai_set_sysclk(codec_dai, M98090_REG_SYSTEM_CLOCK,
92 				     CHT_PLAT_CLK_3_HZ, SND_SOC_CLOCK_IN);
93 	if (ret < 0) {
94 		dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
95 		return ret;
96 	}
97 
98 	return 0;
99 }
100 
101 static int cht_ti_jack_event(struct notifier_block *nb,
102 		unsigned long event, void *data)
103 {
104 	struct snd_soc_jack *jack = (struct snd_soc_jack *)data;
105 	struct snd_soc_dapm_context *dapm = &jack->card->dapm;
106 
107 	if (event & SND_JACK_MICROPHONE) {
108 		snd_soc_dapm_force_enable_pin(dapm, "SHDN");
109 		snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
110 		snd_soc_dapm_sync(dapm);
111 	} else {
112 		snd_soc_dapm_disable_pin(dapm, "MICBIAS");
113 		snd_soc_dapm_disable_pin(dapm, "SHDN");
114 		snd_soc_dapm_sync(dapm);
115 	}
116 
117 	return 0;
118 }
119 
120 static struct notifier_block cht_jack_nb = {
121 	.notifier_call = cht_ti_jack_event,
122 };
123 
124 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
125 {
126 	int ret;
127 	int jack_type;
128 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
129 	struct snd_soc_jack *jack = &ctx->jack;
130 
131 	/**
132 	* TI supports 4 butons headset detection
133 	* KEY_MEDIA
134 	* KEY_VOICECOMMAND
135 	* KEY_VOLUMEUP
136 	* KEY_VOLUMEDOWN
137 	*/
138 	if (ctx->ts3a227e_present)
139 		jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
140 					SND_JACK_BTN_0 | SND_JACK_BTN_1 |
141 					SND_JACK_BTN_2 | SND_JACK_BTN_3;
142 	else
143 		jack_type = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE;
144 
145 	ret = snd_soc_card_jack_new(runtime->card, "Headset Jack",
146 					jack_type, jack, NULL, 0);
147 
148 	if (ret) {
149 		dev_err(runtime->dev, "Headset Jack creation failed %d\n", ret);
150 		return ret;
151 	}
152 
153 	if (ctx->ts3a227e_present)
154 		snd_soc_jack_notifier_register(jack, &cht_jack_nb);
155 
156 	return ret;
157 }
158 
159 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
160 			    struct snd_pcm_hw_params *params)
161 {
162 	struct snd_interval *rate = hw_param_interval(params,
163 			SNDRV_PCM_HW_PARAM_RATE);
164 	struct snd_interval *channels = hw_param_interval(params,
165 						SNDRV_PCM_HW_PARAM_CHANNELS);
166 	int ret = 0;
167 	unsigned int fmt = 0;
168 
169 	ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 16);
170 	if (ret < 0) {
171 		dev_err(rtd->dev, "can't set cpu_dai slot fmt: %d\n", ret);
172 		return ret;
173 	}
174 
175 	fmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF
176 				| SND_SOC_DAIFMT_CBS_CFS;
177 
178 	ret = snd_soc_dai_set_fmt(rtd->cpu_dai, fmt);
179 	if (ret < 0) {
180 		dev_err(rtd->dev, "can't set cpu_dai set fmt: %d\n", ret);
181 		return ret;
182 	}
183 
184 	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
185 	rate->min = rate->max = 48000;
186 	channels->min = channels->max = 2;
187 
188 	/* set SSP2 to 24-bit */
189 	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
190 	return 0;
191 }
192 
193 static int cht_aif1_startup(struct snd_pcm_substream *substream)
194 {
195 	return snd_pcm_hw_constraint_single(substream->runtime,
196 			SNDRV_PCM_HW_PARAM_RATE, 48000);
197 }
198 
199 static int cht_max98090_headset_init(struct snd_soc_component *component)
200 {
201 	struct snd_soc_card *card = component->card;
202 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
203 
204 	return ts3a227e_enable_jack_detect(component, &ctx->jack);
205 }
206 
207 static const struct snd_soc_ops cht_aif1_ops = {
208 	.startup = cht_aif1_startup,
209 };
210 
211 static const struct snd_soc_ops cht_be_ssp2_ops = {
212 	.hw_params = cht_aif1_hw_params,
213 };
214 
215 static struct snd_soc_aux_dev cht_max98090_headset_dev = {
216 	.name = "Headset Chip",
217 	.init = cht_max98090_headset_init,
218 	.codec_name = "i2c-104C227E:00",
219 };
220 
221 static struct snd_soc_dai_link cht_dailink[] = {
222 	[MERR_DPCM_AUDIO] = {
223 		.name = "Audio Port",
224 		.stream_name = "Audio",
225 		.cpu_dai_name = "media-cpu-dai",
226 		.codec_dai_name = "snd-soc-dummy-dai",
227 		.codec_name = "snd-soc-dummy",
228 		.platform_name = "sst-mfld-platform",
229 		.nonatomic = true,
230 		.dynamic = 1,
231 		.dpcm_playback = 1,
232 		.dpcm_capture = 1,
233 		.ops = &cht_aif1_ops,
234 	},
235 	[MERR_DPCM_DEEP_BUFFER] = {
236 		.name = "Deep-Buffer Audio Port",
237 		.stream_name = "Deep-Buffer Audio",
238 		.cpu_dai_name = "deepbuffer-cpu-dai",
239 		.codec_dai_name = "snd-soc-dummy-dai",
240 		.codec_name = "snd-soc-dummy",
241 		.platform_name = "sst-mfld-platform",
242 		.nonatomic = true,
243 		.dynamic = 1,
244 		.dpcm_playback = 1,
245 		.ops = &cht_aif1_ops,
246 	},
247 	[MERR_DPCM_COMPR] = {
248 		.name = "Compressed Port",
249 		.stream_name = "Compress",
250 		.cpu_dai_name = "compress-cpu-dai",
251 		.codec_dai_name = "snd-soc-dummy-dai",
252 		.codec_name = "snd-soc-dummy",
253 		.platform_name = "sst-mfld-platform",
254 	},
255 	/* back ends */
256 	{
257 		.name = "SSP2-Codec",
258 		.id = 1,
259 		.cpu_dai_name = "ssp2-port",
260 		.platform_name = "sst-mfld-platform",
261 		.no_pcm = 1,
262 		.codec_dai_name = "HiFi",
263 		.codec_name = "i2c-193C9890:00",
264 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
265 					| SND_SOC_DAIFMT_CBS_CFS,
266 		.init = cht_codec_init,
267 		.be_hw_params_fixup = cht_codec_fixup,
268 		.dpcm_playback = 1,
269 		.dpcm_capture = 1,
270 		.ops = &cht_be_ssp2_ops,
271 	},
272 };
273 
274 /* SoC card */
275 static struct snd_soc_card snd_soc_card_cht = {
276 	.name = "chtmax98090",
277 	.owner = THIS_MODULE,
278 	.dai_link = cht_dailink,
279 	.num_links = ARRAY_SIZE(cht_dailink),
280 	.aux_dev = &cht_max98090_headset_dev,
281 	.num_aux_devs = 1,
282 	.dapm_widgets = cht_dapm_widgets,
283 	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
284 	.dapm_routes = cht_audio_map,
285 	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
286 	.controls = cht_mc_controls,
287 	.num_controls = ARRAY_SIZE(cht_mc_controls),
288 };
289 
290 static int snd_cht_mc_probe(struct platform_device *pdev)
291 {
292 	int ret_val = 0;
293 	struct cht_mc_private *drv;
294 
295 	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
296 	if (!drv)
297 		return -ENOMEM;
298 
299 	drv->ts3a227e_present = acpi_dev_found("104C227E");
300 	if (!drv->ts3a227e_present) {
301 		/* no need probe TI jack detection chip */
302 		snd_soc_card_cht.aux_dev = NULL;
303 		snd_soc_card_cht.num_aux_devs = 0;
304 	}
305 
306 	/* register the soc card */
307 	snd_soc_card_cht.dev = &pdev->dev;
308 	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
309 	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
310 	if (ret_val) {
311 		dev_err(&pdev->dev,
312 			"snd_soc_register_card failed %d\n", ret_val);
313 		return ret_val;
314 	}
315 	platform_set_drvdata(pdev, &snd_soc_card_cht);
316 	return ret_val;
317 }
318 
319 static struct platform_driver snd_cht_mc_driver = {
320 	.driver = {
321 		.name = "cht-bsw-max98090",
322 	},
323 	.probe = snd_cht_mc_probe,
324 };
325 
326 module_platform_driver(snd_cht_mc_driver)
327 
328 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
329 MODULE_AUTHOR("Fang, Yang A <yang.a.fang@intel.com>");
330 MODULE_LICENSE("GPL v2");
331 MODULE_ALIAS("platform:cht-bsw-max98090");
332