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 	/* NAU88L24 supports 4 buttons headset detection
104 	 * KEY_PLAYPAUSE
105 	 * KEY_VOICECOMMAND
106 	 * KEY_VOLUMEUP
107 	 * KEY_VOLUMEDOWN
108 	 */
109 	jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
110 		SND_JACK_BTN_2 | SND_JACK_BTN_3;
111 	ret = snd_soc_card_jack_new_pins(runtime->card, "Headset", jack_type,
112 		jack, cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
113 	if (ret) {
114 		dev_err(runtime->dev,
115 			"Headset Jack creation failed %d\n", ret);
116 		return ret;
117 	}
118 	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
119 	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
120 	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
121 	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
122 
123 	nau8824_enable_jack_detect(component, jack);
124 
125 	return ret;
126 }
127 
128 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
129 	struct snd_pcm_hw_params *params)
130 {
131 	struct snd_interval *rate = hw_param_interval(params,
132 		SNDRV_PCM_HW_PARAM_RATE);
133 	struct snd_interval *channels = hw_param_interval(params,
134 		SNDRV_PCM_HW_PARAM_CHANNELS);
135 	struct snd_mask *fmt =
136 		hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
137 	int ret;
138 
139 	/* The DSP will convert the FE rate to 48k, stereo, 24bits */
140 	rate->min = rate->max = 48000;
141 	channels->min = channels->max = 2;
142 
143 	/* set SSP2 to 24-bit */
144 	snd_mask_none(fmt);
145 	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
146 
147 	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
148 	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_codec(rtd, 0), 0xf, 0x1, 4, 24);
149 	if (ret < 0) {
150 		dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
151 		return ret;
152 	}
153 
154 	return 0;
155 }
156 
157 static int cht_aif1_startup(struct snd_pcm_substream *substream)
158 {
159 	return snd_pcm_hw_constraint_single(substream->runtime,
160 		SNDRV_PCM_HW_PARAM_RATE, 48000);
161 }
162 
163 static const struct snd_soc_ops cht_aif1_ops = {
164 	.startup = cht_aif1_startup,
165 };
166 
167 static const struct snd_soc_ops cht_be_ssp2_ops = {
168 	.hw_params = cht_aif1_hw_params,
169 };
170 
171 SND_SOC_DAILINK_DEF(dummy,
172 	DAILINK_COMP_ARRAY(COMP_DUMMY()));
173 
174 SND_SOC_DAILINK_DEF(media,
175 	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
176 
177 SND_SOC_DAILINK_DEF(deepbuffer,
178 	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
179 
180 SND_SOC_DAILINK_DEF(ssp2_port,
181 	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
182 SND_SOC_DAILINK_DEF(ssp2_codec,
183 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
184 				      NAU8824_CODEC_DAI)));
185 
186 SND_SOC_DAILINK_DEF(platform,
187 	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
188 
189 static struct snd_soc_dai_link cht_dailink[] = {
190 	/* Front End DAI links */
191 	[MERR_DPCM_AUDIO] = {
192 		.name = "Audio Port",
193 		.stream_name = "Audio",
194 		.nonatomic = true,
195 		.dynamic = 1,
196 		.dpcm_playback = 1,
197 		.dpcm_capture = 1,
198 		.ops = &cht_aif1_ops,
199 		SND_SOC_DAILINK_REG(media, dummy, platform),
200 	},
201 	[MERR_DPCM_DEEP_BUFFER] = {
202 		.name = "Deep-Buffer Audio Port",
203 		.stream_name = "Deep-Buffer Audio",
204 		.nonatomic = true,
205 		.dynamic = 1,
206 		.dpcm_playback = 1,
207 		.ops = &cht_aif1_ops,
208 		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
209 	},
210 	/* Back End DAI links */
211 	{
212 		/* SSP2 - Codec */
213 		.name = "SSP2-Codec",
214 		.id = 0,
215 		.no_pcm = 1,
216 		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
217 			| SND_SOC_DAIFMT_CBC_CFC,
218 		.init = cht_codec_init,
219 		.be_hw_params_fixup = cht_codec_fixup,
220 		.dpcm_playback = 1,
221 		.dpcm_capture = 1,
222 		.ops = &cht_be_ssp2_ops,
223 		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
224 	},
225 };
226 
227 /* use space before codec name to simplify card ID, and simplify driver name */
228 #define SOF_CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
229 #define SOF_DRIVER_NAME "SOF"
230 
231 #define CARD_NAME "chtnau8824"
232 #define DRIVER_NAME NULL /* card name will be used for driver name */
233 
234 /* SoC card */
235 static struct snd_soc_card snd_soc_card_cht = {
236 	.owner = THIS_MODULE,
237 	.dai_link = cht_dailink,
238 	.num_links = ARRAY_SIZE(cht_dailink),
239 	.dapm_widgets = cht_dapm_widgets,
240 	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
241 	.dapm_routes = cht_audio_map,
242 	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
243 	.controls = cht_mc_controls,
244 	.num_controls = ARRAY_SIZE(cht_mc_controls),
245 };
246 
247 static int snd_cht_mc_probe(struct platform_device *pdev)
248 {
249 	struct cht_mc_private *drv;
250 	struct snd_soc_acpi_mach *mach;
251 	const char *platform_name;
252 	bool sof_parent;
253 	int ret_val;
254 
255 	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
256 	if (!drv)
257 		return -ENOMEM;
258 	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
259 
260 	/* override platform name, if required */
261 	snd_soc_card_cht.dev = &pdev->dev;
262 	mach = pdev->dev.platform_data;
263 	platform_name = mach->mach_params.platform;
264 
265 	ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
266 							platform_name);
267 	if (ret_val)
268 		return ret_val;
269 
270 	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
271 
272 	/* set card and driver name */
273 	if (sof_parent) {
274 		snd_soc_card_cht.name = SOF_CARD_NAME;
275 		snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
276 	} else {
277 		snd_soc_card_cht.name = CARD_NAME;
278 		snd_soc_card_cht.driver_name = DRIVER_NAME;
279 	}
280 
281 	snd_soc_card_cht.components = nau8824_components();
282 
283 	/* set pm ops */
284 	if (sof_parent)
285 		pdev->dev.driver->pm = &snd_soc_pm_ops;
286 
287 	/* register the soc card */
288 	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
289 	if (ret_val) {
290 		dev_err(&pdev->dev,
291 			"snd_soc_register_card failed %d\n", ret_val);
292 		return ret_val;
293 	}
294 	platform_set_drvdata(pdev, &snd_soc_card_cht);
295 
296 	return ret_val;
297 }
298 
299 static struct platform_driver snd_cht_mc_driver = {
300 	.driver = {
301 		.name = "cht-bsw-nau8824",
302 	},
303 	.probe = snd_cht_mc_probe,
304 };
305 
306 module_platform_driver(snd_cht_mc_driver);
307 
308 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
309 MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
310 MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
311 MODULE_LICENSE("GPL v2");
312 MODULE_ALIAS("platform:cht-bsw-nau8824");
313