1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  bytcht-da7213.c - ASoc Machine driver for Intel Baytrail and
4  *             Cherrytrail-based platforms, with Dialog DA7213 codec
5  *
6  *  Copyright (C) 2017 Intel Corporation
7  *  Author: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
8  *
9  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10  *
11  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12  */
13 
14 #include <linux/module.h>
15 #include <linux/acpi.h>
16 #include <linux/platform_device.h>
17 #include <linux/slab.h>
18 #include <sound/pcm.h>
19 #include <sound/pcm_params.h>
20 #include <sound/soc.h>
21 #include <sound/soc-acpi.h>
22 #include "../../codecs/da7213.h"
23 #include "../atom/sst-atom-controls.h"
24 
25 static const struct snd_kcontrol_new controls[] = {
26 	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
27 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
28 	SOC_DAPM_PIN_SWITCH("Mic"),
29 	SOC_DAPM_PIN_SWITCH("Aux In"),
30 };
31 
32 static const struct snd_soc_dapm_widget dapm_widgets[] = {
33 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
34 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
35 	SND_SOC_DAPM_MIC("Mic", NULL),
36 	SND_SOC_DAPM_LINE("Aux In", NULL),
37 };
38 
39 static const struct snd_soc_dapm_route audio_map[] = {
40 	{"Headphone Jack", NULL, "HPL"},
41 	{"Headphone Jack", NULL, "HPR"},
42 
43 	{"AUXL", NULL, "Aux In"},
44 	{"AUXR", NULL, "Aux In"},
45 
46 	/* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
47 	{"MIC1", NULL, "Headset Mic"},
48 	{"MIC2", NULL, "Mic"},
49 
50 	/* SOC-codec link */
51 	{"ssp2 Tx", NULL, "codec_out0"},
52 	{"ssp2 Tx", NULL, "codec_out1"},
53 	{"codec_in0", NULL, "ssp2 Rx"},
54 	{"codec_in1", NULL, "ssp2 Rx"},
55 
56 	{"Playback", NULL, "ssp2 Tx"},
57 	{"ssp2 Rx", NULL, "Capture"},
58 };
59 
60 static int codec_fixup(struct snd_soc_pcm_runtime *rtd,
61 		       struct snd_pcm_hw_params *params)
62 {
63 	int ret;
64 	struct snd_interval *rate = hw_param_interval(params,
65 			SNDRV_PCM_HW_PARAM_RATE);
66 	struct snd_interval *channels = hw_param_interval(params,
67 						SNDRV_PCM_HW_PARAM_CHANNELS);
68 
69 	/* The DSP will convert the FE rate to 48k, stereo, 24bits */
70 	rate->min = rate->max = 48000;
71 	channels->min = channels->max = 2;
72 
73 	/* set SSP2 to 24-bit */
74 	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
75 
76 	/*
77 	 * Default mode for SSP configuration is TDM 4 slot, override config
78 	 * with explicit setting to I2S 2ch 24-bit. The word length is set with
79 	 * dai_set_tdm_slot() since there is no other API exposed
80 	 */
81 	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
82 				  SND_SOC_DAIFMT_I2S     |
83 				  SND_SOC_DAIFMT_NB_NF   |
84 				  SND_SOC_DAIFMT_BP_FP);
85 	if (ret < 0) {
86 		dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
87 		return ret;
88 	}
89 
90 	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
91 	if (ret < 0) {
92 		dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
93 		return ret;
94 	}
95 
96 	return 0;
97 }
98 
99 static int aif1_startup(struct snd_pcm_substream *substream)
100 {
101 	return snd_pcm_hw_constraint_single(substream->runtime,
102 			SNDRV_PCM_HW_PARAM_RATE, 48000);
103 }
104 
105 static int aif1_hw_params(struct snd_pcm_substream *substream,
106 			  struct snd_pcm_hw_params *params)
107 {
108 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
109 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
110 	int ret;
111 
112 	ret = snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK,
113 				     19200000, SND_SOC_CLOCK_IN);
114 	if (ret < 0)
115 		dev_err(codec_dai->dev, "can't set codec sysclk configuration\n");
116 
117 	ret = snd_soc_dai_set_pll(codec_dai, 0,
118 			DA7213_SYSCLK_PLL_SRM, 0, DA7213_PLL_FREQ_OUT_98304000);
119 	if (ret < 0) {
120 		dev_err(codec_dai->dev, "failed to start PLL: %d\n", ret);
121 		return -EIO;
122 	}
123 
124 	return ret;
125 }
126 
127 static int aif1_hw_free(struct snd_pcm_substream *substream)
128 {
129 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
130 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
131 	int ret;
132 
133 	ret = snd_soc_dai_set_pll(codec_dai, 0,
134 				  DA7213_SYSCLK_MCLK, 0, 0);
135 	if (ret < 0) {
136 		dev_err(codec_dai->dev, "failed to stop PLL: %d\n", ret);
137 		return -EIO;
138 	}
139 
140 	return ret;
141 }
142 
143 static const struct snd_soc_ops aif1_ops = {
144 	.startup = aif1_startup,
145 };
146 
147 static const struct snd_soc_ops ssp2_ops = {
148 	.hw_params = aif1_hw_params,
149 	.hw_free = aif1_hw_free,
150 
151 };
152 
153 SND_SOC_DAILINK_DEF(dummy,
154 	DAILINK_COMP_ARRAY(COMP_DUMMY()));
155 
156 SND_SOC_DAILINK_DEF(media,
157 	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
158 
159 SND_SOC_DAILINK_DEF(deepbuffer,
160 	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
161 
162 SND_SOC_DAILINK_DEF(ssp2_port,
163 	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
164 SND_SOC_DAILINK_DEF(ssp2_codec,
165 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-DLGS7213:00",
166 				      "da7213-hifi")));
167 
168 SND_SOC_DAILINK_DEF(platform,
169 	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
170 
171 static struct snd_soc_dai_link dailink[] = {
172 	[MERR_DPCM_AUDIO] = {
173 		.name = "Audio Port",
174 		.stream_name = "Audio",
175 		.nonatomic = true,
176 		.dynamic = 1,
177 		.dpcm_playback = 1,
178 		.dpcm_capture = 1,
179 		.ops = &aif1_ops,
180 		SND_SOC_DAILINK_REG(media, dummy, platform),
181 	},
182 	[MERR_DPCM_DEEP_BUFFER] = {
183 		.name = "Deep-Buffer Audio Port",
184 		.stream_name = "Deep-Buffer Audio",
185 		.nonatomic = true,
186 		.dynamic = 1,
187 		.dpcm_playback = 1,
188 		.ops = &aif1_ops,
189 		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
190 	},
191 	/* CODEC<->CODEC link */
192 	/* back ends */
193 	{
194 		.name = "SSP2-Codec",
195 		.id = 0,
196 		.no_pcm = 1,
197 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
198 						| SND_SOC_DAIFMT_CBC_CFC,
199 		.be_hw_params_fixup = codec_fixup,
200 		.dpcm_playback = 1,
201 		.dpcm_capture = 1,
202 		.ops = &ssp2_ops,
203 		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
204 	},
205 };
206 
207 /* use space before codec name to simplify card ID, and simplify driver name */
208 #define SOF_CARD_NAME "bytcht da7213" /* card name will be 'sof-bytcht da7213' */
209 #define SOF_DRIVER_NAME "SOF"
210 
211 #define CARD_NAME "bytcht-da7213"
212 #define DRIVER_NAME NULL /* card name will be used for driver name */
213 
214 /* SoC card */
215 static struct snd_soc_card bytcht_da7213_card = {
216 	.name = CARD_NAME,
217 	.driver_name = DRIVER_NAME,
218 	.owner = THIS_MODULE,
219 	.dai_link = dailink,
220 	.num_links = ARRAY_SIZE(dailink),
221 	.controls = controls,
222 	.num_controls = ARRAY_SIZE(controls),
223 	.dapm_widgets = dapm_widgets,
224 	.num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
225 	.dapm_routes = audio_map,
226 	.num_dapm_routes = ARRAY_SIZE(audio_map),
227 };
228 
229 static char codec_name[SND_ACPI_I2C_ID_LEN];
230 
231 static int bytcht_da7213_probe(struct platform_device *pdev)
232 {
233 	struct snd_soc_card *card;
234 	struct snd_soc_acpi_mach *mach;
235 	const char *platform_name;
236 	struct acpi_device *adev;
237 	bool sof_parent;
238 	int dai_index = 0;
239 	int ret_val = 0;
240 	int i;
241 
242 	mach = pdev->dev.platform_data;
243 	card = &bytcht_da7213_card;
244 	card->dev = &pdev->dev;
245 
246 	/* fix index of codec dai */
247 	for (i = 0; i < ARRAY_SIZE(dailink); i++) {
248 		if (!strcmp(dailink[i].codecs->name, "i2c-DLGS7213:00")) {
249 			dai_index = i;
250 			break;
251 		}
252 	}
253 
254 	/* fixup codec name based on HID */
255 	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
256 	if (adev) {
257 		snprintf(codec_name, sizeof(codec_name),
258 			 "i2c-%s", acpi_dev_name(adev));
259 		put_device(&adev->dev);
260 		dailink[dai_index].codecs->name = codec_name;
261 	}
262 
263 	/* override platform name, if required */
264 	platform_name = mach->mach_params.platform;
265 
266 	ret_val = snd_soc_fixup_dai_links_platform_name(card, 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 		bytcht_da7213_card.name = SOF_CARD_NAME;
275 		bytcht_da7213_card.driver_name = SOF_DRIVER_NAME;
276 	} else {
277 		bytcht_da7213_card.name = CARD_NAME;
278 		bytcht_da7213_card.driver_name = DRIVER_NAME;
279 	}
280 
281 	/* set pm ops */
282 	if (sof_parent)
283 		pdev->dev.driver->pm = &snd_soc_pm_ops;
284 
285 	ret_val = devm_snd_soc_register_card(&pdev->dev, card);
286 	if (ret_val) {
287 		dev_err(&pdev->dev,
288 			"snd_soc_register_card failed %d\n", ret_val);
289 		return ret_val;
290 	}
291 	platform_set_drvdata(pdev, card);
292 	return ret_val;
293 }
294 
295 static struct platform_driver bytcht_da7213_driver = {
296 	.driver = {
297 		.name = "bytcht_da7213",
298 	},
299 	.probe = bytcht_da7213_probe,
300 };
301 module_platform_driver(bytcht_da7213_driver);
302 
303 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail+DA7213 Machine driver");
304 MODULE_AUTHOR("Pierre-Louis Bossart");
305 MODULE_LICENSE("GPL v2");
306 MODULE_ALIAS("platform:bytcht_da7213");
307