1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  cht-bsw-nau8824.c - ASoc Machine driver for Intel Cherryview-based
4  *          platforms Cherrytrail and Braswell, with nau8824 codec.
5  *
6  *  Copyright (C) 2018 Intel Corp
7  *  Copyright (C) 2018 Nuvoton Technology Corp
8  *
9  *  Author: Wang, Joseph C <joequant@gmail.com>
10  *  Co-author: John Hsu <KCHSU0@nuvoton.com>
11  *  This file is based on cht_bsw_rt5672.c and cht-bsw-max98090.c
12  */
13 
14 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <linux/slab.h>
17 #include <sound/pcm.h>
18 #include <sound/pcm_params.h>
19 #include <sound/soc.h>
20 #include <sound/soc-acpi.h>
21 #include <sound/jack.h>
22 #include <linux/input.h>
23 #include "../atom/sst-atom-controls.h"
24 #include "../../codecs/nau8824.h"
25 
26 struct cht_mc_private {
27 	struct snd_soc_jack jack;
28 };
29 
30 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
31 	{
32 		.pin = "Headphone",
33 		.mask = SND_JACK_HEADPHONE,
34 	},
35 	{
36 		.pin = "Headset Mic",
37 		.mask = SND_JACK_MICROPHONE,
38 	},
39 };
40 
41 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
42 	SND_SOC_DAPM_HP("Headphone", NULL),
43 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
44 	SND_SOC_DAPM_MIC("Int Mic", NULL),
45 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
46 };
47 
48 static const struct snd_soc_dapm_route cht_audio_map[] = {
49 	{"Ext Spk", NULL, "SPKOUTL"},
50 	{"Ext Spk", NULL, "SPKOUTR"},
51 	{"Headphone", NULL, "HPOL"},
52 	{"Headphone", NULL, "HPOR"},
53 	{"MIC1", NULL, "Int Mic"},
54 	{"MIC2", NULL, "Int Mic"},
55 	{"HSMIC1", NULL, "Headset Mic"},
56 	{"HSMIC2", NULL, "Headset Mic"},
57 	{"Playback", NULL, "ssp2 Tx"},
58 	{"ssp2 Tx", NULL, "codec_out0"},
59 	{"ssp2 Tx", NULL, "codec_out1"},
60 	{"codec_in0", NULL, "ssp2 Rx" },
61 	{"codec_in1", NULL, "ssp2 Rx" },
62 	{"ssp2 Rx", NULL, "Capture"},
63 };
64 
65 static const struct snd_kcontrol_new cht_mc_controls[] = {
66 	SOC_DAPM_PIN_SWITCH("Headphone"),
67 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
68 	SOC_DAPM_PIN_SWITCH("Int Mic"),
69 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
70 };
71 
72 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
73 	struct snd_pcm_hw_params *params)
74 {
75 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
76 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
77 	int ret;
78 
79 	ret = snd_soc_dai_set_sysclk(codec_dai, NAU8824_CLK_FLL_FS, 0,
80 		SND_SOC_CLOCK_IN);
81 	if (ret < 0) {
82 		dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
83 		return ret;
84 	}
85 	ret = snd_soc_dai_set_pll(codec_dai, 0, 0, params_rate(params),
86 		params_rate(params) * 256);
87 	if (ret < 0) {
88 		dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
89 		return ret;
90 	}
91 
92 	return 0;
93 }
94 
95 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
96 {
97 	struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
98 	struct snd_soc_jack *jack = &ctx->jack;
99 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
100 	struct snd_soc_component *component = codec_dai->component;
101 	int ret, jack_type;
102 
103 	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
104 	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xf, 0x1, 4, 24);
105 	if (ret < 0) {
106 		dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
107 		return ret;
108 	}
109 
110 	/* NAU88L24 supports 4 butons headset detection
111 	 * KEY_PLAYPAUSE
112 	 * KEY_VOICECOMMAND
113 	 * KEY_VOLUMEUP
114 	 * KEY_VOLUMEDOWN
115 	 */
116 	jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
117 		SND_JACK_BTN_2 | SND_JACK_BTN_3;
118 	ret = snd_soc_card_jack_new(runtime->card, "Headset", jack_type, jack,
119 		cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
120 	if (ret) {
121 		dev_err(runtime->dev,
122 			"Headset Jack creation failed %d\n", ret);
123 		return ret;
124 	}
125 	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
126 	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
127 	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
128 	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
129 
130 	nau8824_enable_jack_detect(component, jack);
131 
132 	return ret;
133 }
134 
135 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
136 	struct snd_pcm_hw_params *params)
137 {
138 	struct snd_interval *rate = hw_param_interval(params,
139 		SNDRV_PCM_HW_PARAM_RATE);
140 	struct snd_interval *channels = hw_param_interval(params,
141 		SNDRV_PCM_HW_PARAM_CHANNELS);
142 	struct snd_mask *fmt =
143 		hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
144 
145 	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
146 	rate->min = rate->max = 48000;
147 	channels->min = channels->max = 2;
148 
149 	/* set SSP2 to 24-bit */
150 	snd_mask_none(fmt);
151 	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
152 
153 	return 0;
154 }
155 
156 static int cht_aif1_startup(struct snd_pcm_substream *substream)
157 {
158 	return snd_pcm_hw_constraint_single(substream->runtime,
159 		SNDRV_PCM_HW_PARAM_RATE, 48000);
160 }
161 
162 static const struct snd_soc_ops cht_aif1_ops = {
163 	.startup = cht_aif1_startup,
164 };
165 
166 static const struct snd_soc_ops cht_be_ssp2_ops = {
167 	.hw_params = cht_aif1_hw_params,
168 };
169 
170 SND_SOC_DAILINK_DEF(dummy,
171 	DAILINK_COMP_ARRAY(COMP_DUMMY()));
172 
173 SND_SOC_DAILINK_DEF(media,
174 	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
175 
176 SND_SOC_DAILINK_DEF(deepbuffer,
177 	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
178 
179 SND_SOC_DAILINK_DEF(compress,
180 	DAILINK_COMP_ARRAY(COMP_CPU("compress-cpu-dai")));
181 
182 SND_SOC_DAILINK_DEF(ssp2_port,
183 	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
184 SND_SOC_DAILINK_DEF(ssp2_codec,
185 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
186 				      NAU8824_CODEC_DAI)));
187 
188 SND_SOC_DAILINK_DEF(platform,
189 	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
190 
191 static struct snd_soc_dai_link cht_dailink[] = {
192 	/* Front End DAI links */
193 	[MERR_DPCM_AUDIO] = {
194 		.name = "Audio Port",
195 		.stream_name = "Audio",
196 		.nonatomic = true,
197 		.dynamic = 1,
198 		.dpcm_playback = 1,
199 		.dpcm_capture = 1,
200 		.ops = &cht_aif1_ops,
201 		SND_SOC_DAILINK_REG(media, dummy, platform),
202 	},
203 	[MERR_DPCM_DEEP_BUFFER] = {
204 		.name = "Deep-Buffer Audio Port",
205 		.stream_name = "Deep-Buffer Audio",
206 		.nonatomic = true,
207 		.dynamic = 1,
208 		.dpcm_playback = 1,
209 		.ops = &cht_aif1_ops,
210 		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
211 	},
212 	[MERR_DPCM_COMPR] = {
213 		.name = "Compressed Port",
214 		.stream_name = "Compress",
215 		SND_SOC_DAILINK_REG(compress, dummy, platform),
216 	},
217 	/* Back End DAI links */
218 	{
219 		/* SSP2 - Codec */
220 		.name = "SSP2-Codec",
221 		.id = 1,
222 		.no_pcm = 1,
223 		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
224 			| SND_SOC_DAIFMT_CBS_CFS,
225 		.init = cht_codec_init,
226 		.be_hw_params_fixup = cht_codec_fixup,
227 		.dpcm_playback = 1,
228 		.dpcm_capture = 1,
229 		.ops = &cht_be_ssp2_ops,
230 		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
231 	},
232 };
233 
234 #if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
235 /* use space before codec name to simplify card ID, and simplify driver name */
236 #define CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
237 #define DRIVER_NAME "SOF"
238 #else
239 #define CARD_NAME "chtnau8824"
240 #define DRIVER_NAME NULL /* card name will be used for driver name */
241 #endif
242 
243 /* SoC card */
244 static struct snd_soc_card snd_soc_card_cht = {
245 	.name = CARD_NAME,
246 	.driver_name = DRIVER_NAME,
247 	.owner = THIS_MODULE,
248 	.dai_link = cht_dailink,
249 	.num_links = ARRAY_SIZE(cht_dailink),
250 	.dapm_widgets = cht_dapm_widgets,
251 	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
252 	.dapm_routes = cht_audio_map,
253 	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
254 	.controls = cht_mc_controls,
255 	.num_controls = ARRAY_SIZE(cht_mc_controls),
256 };
257 
258 static int snd_cht_mc_probe(struct platform_device *pdev)
259 {
260 	struct cht_mc_private *drv;
261 	struct snd_soc_acpi_mach *mach;
262 	const char *platform_name;
263 	int ret_val;
264 
265 	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
266 	if (!drv)
267 		return -ENOMEM;
268 	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
269 
270 	/* override plaform name, if required */
271 	snd_soc_card_cht.dev = &pdev->dev;
272 	mach = pdev->dev.platform_data;
273 	platform_name = mach->mach_params.platform;
274 
275 	ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
276 							platform_name);
277 	if (ret_val)
278 		return ret_val;
279 
280 	/* register the soc card */
281 	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
282 	if (ret_val) {
283 		dev_err(&pdev->dev,
284 			"snd_soc_register_card failed %d\n", ret_val);
285 		return ret_val;
286 	}
287 	platform_set_drvdata(pdev, &snd_soc_card_cht);
288 
289 	return ret_val;
290 }
291 
292 static struct platform_driver snd_cht_mc_driver = {
293 	.driver = {
294 		.name = "cht-bsw-nau8824",
295 #if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
296 		.pm = &snd_soc_pm_ops,
297 #endif
298 	},
299 	.probe = snd_cht_mc_probe,
300 };
301 
302 module_platform_driver(snd_cht_mc_driver);
303 
304 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
305 MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
306 MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
307 MODULE_LICENSE("GPL v2");
308 MODULE_ALIAS("platform:cht-bsw-nau8824");
309