1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * mt8173-rt5650.c  --  MT8173 machine driver with RT5650 codecs
4  *
5  * Copyright (c) 2016 MediaTek Inc.
6  * Author: Koro Chen <koro.chen@mediatek.com>
7  */
8 
9 #include <linux/module.h>
10 #include <linux/gpio.h>
11 #include <linux/of_gpio.h>
12 #include <sound/soc.h>
13 #include <sound/jack.h>
14 #include "../../codecs/rt5645.h"
15 
16 #define MCLK_FOR_CODECS		12288000
17 
18 enum mt8173_rt5650_mclk {
19 	MT8173_RT5650_MCLK_EXTERNAL = 0,
20 	MT8173_RT5650_MCLK_INTERNAL,
21 };
22 
23 struct mt8173_rt5650_platform_data {
24 	enum mt8173_rt5650_mclk pll_from;
25 	/* 0 = external oscillator; 1 = internal source from mt8173 */
26 };
27 
28 static struct mt8173_rt5650_platform_data mt8173_rt5650_priv = {
29 	.pll_from = MT8173_RT5650_MCLK_EXTERNAL,
30 };
31 
32 static const struct snd_soc_dapm_widget mt8173_rt5650_widgets[] = {
33 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
34 	SND_SOC_DAPM_MIC("Int Mic", NULL),
35 	SND_SOC_DAPM_HP("Headphone", NULL),
36 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
37 };
38 
39 static const struct snd_soc_dapm_route mt8173_rt5650_routes[] = {
40 	{"Ext Spk", NULL, "SPOL"},
41 	{"Ext Spk", NULL, "SPOR"},
42 	{"DMIC L1", NULL, "Int Mic"},
43 	{"DMIC R1", NULL, "Int Mic"},
44 	{"Headphone", NULL, "HPOL"},
45 	{"Headphone", NULL, "HPOR"},
46 	{"IN1P", NULL, "Headset Mic"},
47 	{"IN1N", NULL, "Headset Mic"},
48 };
49 
50 static const struct snd_kcontrol_new mt8173_rt5650_controls[] = {
51 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
52 	SOC_DAPM_PIN_SWITCH("Int Mic"),
53 	SOC_DAPM_PIN_SWITCH("Headphone"),
54 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
55 };
56 
57 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream,
58 				   struct snd_pcm_hw_params *params)
59 {
60 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
61 	unsigned int mclk_clock;
62 	struct snd_soc_dai *codec_dai;
63 	int i, ret;
64 
65 	switch (mt8173_rt5650_priv.pll_from) {
66 	case MT8173_RT5650_MCLK_EXTERNAL:
67 		/* mclk = 12.288M */
68 		mclk_clock = MCLK_FOR_CODECS;
69 		break;
70 	case MT8173_RT5650_MCLK_INTERNAL:
71 		/* mclk = sampling rate*256 */
72 		mclk_clock = params_rate(params) * 256;
73 		break;
74 	default:
75 		/* mclk = 12.288M */
76 		mclk_clock = MCLK_FOR_CODECS;
77 		break;
78 	}
79 
80 	for_each_rtd_codec_dais(rtd, i, codec_dai) {
81 		/* pll from mclk */
82 		ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock,
83 					  params_rate(params) * 512);
84 		if (ret)
85 			return ret;
86 
87 		/* sysclk from pll */
88 		ret = snd_soc_dai_set_sysclk(codec_dai, 1,
89 					     params_rate(params) * 512,
90 					     SND_SOC_CLOCK_IN);
91 		if (ret)
92 			return ret;
93 	}
94 	return 0;
95 }
96 
97 static const struct snd_soc_ops mt8173_rt5650_ops = {
98 	.hw_params = mt8173_rt5650_hw_params,
99 };
100 
101 static struct snd_soc_jack mt8173_rt5650_jack, mt8173_rt5650_hdmi_jack;
102 
103 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)
104 {
105 	struct snd_soc_card *card = runtime->card;
106 	struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
107 	const char *codec_capture_dai = asoc_rtd_to_codec(runtime, 1)->name;
108 	int ret;
109 
110 	rt5645_sel_asrc_clk_src(component,
111 				RT5645_DA_STEREO_FILTER,
112 				RT5645_CLK_SEL_I2S1_ASRC);
113 
114 	if (!strcmp(codec_capture_dai, "rt5645-aif1")) {
115 		rt5645_sel_asrc_clk_src(component,
116 					RT5645_AD_STEREO_FILTER,
117 					RT5645_CLK_SEL_I2S1_ASRC);
118 	} else if (!strcmp(codec_capture_dai, "rt5645-aif2")) {
119 		rt5645_sel_asrc_clk_src(component,
120 					RT5645_AD_STEREO_FILTER,
121 					RT5645_CLK_SEL_I2S2_ASRC);
122 	} else {
123 		dev_warn(card->dev,
124 			 "Only one dai codec found in DTS, enabled rt5645 AD filter\n");
125 		rt5645_sel_asrc_clk_src(component,
126 					RT5645_AD_STEREO_FILTER,
127 					RT5645_CLK_SEL_I2S1_ASRC);
128 	}
129 
130 	/* enable jack detection */
131 	ret = snd_soc_card_jack_new(card, "Headset Jack",
132 				    SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
133 				    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
134 				    SND_JACK_BTN_2 | SND_JACK_BTN_3,
135 				    &mt8173_rt5650_jack);
136 	if (ret) {
137 		dev_err(card->dev, "Can't new Headset Jack %d\n", ret);
138 		return ret;
139 	}
140 
141 	return rt5645_set_jack_detect(component,
142 				      &mt8173_rt5650_jack,
143 				      &mt8173_rt5650_jack,
144 				      &mt8173_rt5650_jack);
145 }
146 
147 static int mt8173_rt5650_hdmi_init(struct snd_soc_pcm_runtime *rtd)
148 {
149 	int ret;
150 
151 	ret = snd_soc_card_jack_new(rtd->card, "HDMI Jack", SND_JACK_LINEOUT,
152 				    &mt8173_rt5650_hdmi_jack);
153 	if (ret)
154 		return ret;
155 
156 	return snd_soc_component_set_jack(asoc_rtd_to_codec(rtd, 0)->component,
157 					  &mt8173_rt5650_hdmi_jack, NULL);
158 }
159 
160 enum {
161 	DAI_LINK_PLAYBACK,
162 	DAI_LINK_CAPTURE,
163 	DAI_LINK_HDMI,
164 	DAI_LINK_CODEC_I2S,
165 	DAI_LINK_HDMI_I2S,
166 };
167 
168 SND_SOC_DAILINK_DEFS(playback,
169 	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
170 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
171 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
172 
173 SND_SOC_DAILINK_DEFS(capture,
174 	DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
175 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
176 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
177 
178 SND_SOC_DAILINK_DEFS(hdmi_pcm,
179 	DAILINK_COMP_ARRAY(COMP_CPU("HDMI")),
180 	DAILINK_COMP_ARRAY(COMP_DUMMY()),
181 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
182 
183 SND_SOC_DAILINK_DEFS(codec,
184 	DAILINK_COMP_ARRAY(COMP_CPU("I2S")),
185 	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5645-aif1"), /* Playback */
186 			   COMP_CODEC(NULL, "rt5645-aif1")),/* Capture */
187 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
188 
189 SND_SOC_DAILINK_DEFS(hdmi_be,
190 	DAILINK_COMP_ARRAY(COMP_CPU("HDMIO")),
191 	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "i2s-hifi")),
192 	DAILINK_COMP_ARRAY(COMP_EMPTY()));
193 
194 /* Digital audio interface glue - connects codec <---> CPU */
195 static struct snd_soc_dai_link mt8173_rt5650_dais[] = {
196 	/* Front End DAI links */
197 	[DAI_LINK_PLAYBACK] = {
198 		.name = "rt5650 Playback",
199 		.stream_name = "rt5650 Playback",
200 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
201 		.dynamic = 1,
202 		.dpcm_playback = 1,
203 		SND_SOC_DAILINK_REG(playback),
204 	},
205 	[DAI_LINK_CAPTURE] = {
206 		.name = "rt5650 Capture",
207 		.stream_name = "rt5650 Capture",
208 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
209 		.dynamic = 1,
210 		.dpcm_capture = 1,
211 		SND_SOC_DAILINK_REG(capture),
212 	},
213 	[DAI_LINK_HDMI] = {
214 		.name = "HDMI",
215 		.stream_name = "HDMI PCM",
216 		.trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
217 		.dynamic = 1,
218 		.dpcm_playback = 1,
219 		SND_SOC_DAILINK_REG(hdmi_pcm),
220 	},
221 	/* Back End DAI links */
222 	[DAI_LINK_CODEC_I2S] = {
223 		.name = "Codec",
224 		.no_pcm = 1,
225 		.init = mt8173_rt5650_init,
226 		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
227 			   SND_SOC_DAIFMT_CBS_CFS,
228 		.ops = &mt8173_rt5650_ops,
229 		.ignore_pmdown_time = 1,
230 		.dpcm_playback = 1,
231 		.dpcm_capture = 1,
232 		SND_SOC_DAILINK_REG(codec),
233 	},
234 	[DAI_LINK_HDMI_I2S] = {
235 		.name = "HDMI BE",
236 		.no_pcm = 1,
237 		.dpcm_playback = 1,
238 		.init = mt8173_rt5650_hdmi_init,
239 		SND_SOC_DAILINK_REG(hdmi_be),
240 	},
241 };
242 
243 static struct snd_soc_card mt8173_rt5650_card = {
244 	.name = "mtk-rt5650",
245 	.owner = THIS_MODULE,
246 	.dai_link = mt8173_rt5650_dais,
247 	.num_links = ARRAY_SIZE(mt8173_rt5650_dais),
248 	.controls = mt8173_rt5650_controls,
249 	.num_controls = ARRAY_SIZE(mt8173_rt5650_controls),
250 	.dapm_widgets = mt8173_rt5650_widgets,
251 	.num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets),
252 	.dapm_routes = mt8173_rt5650_routes,
253 	.num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes),
254 };
255 
256 static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
257 {
258 	struct snd_soc_card *card = &mt8173_rt5650_card;
259 	struct device_node *platform_node;
260 	struct device_node *np;
261 	const char *codec_capture_dai;
262 	struct snd_soc_dai_link *dai_link;
263 	int i, ret;
264 
265 	platform_node = of_parse_phandle(pdev->dev.of_node,
266 					 "mediatek,platform", 0);
267 	if (!platform_node) {
268 		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
269 		return -EINVAL;
270 	}
271 
272 	for_each_card_prelinks(card, i, dai_link) {
273 		if (dai_link->platforms->name)
274 			continue;
275 		dai_link->platforms->of_node = platform_node;
276 	}
277 
278 	mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node =
279 		of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
280 	if (!mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node) {
281 		dev_err(&pdev->dev,
282 			"Property 'audio-codec' missing or invalid\n");
283 		ret = -EINVAL;
284 		goto put_platform_node;
285 	}
286 	mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[1].of_node =
287 		mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node;
288 
289 	np = of_get_child_by_name(pdev->dev.of_node, "codec-capture");
290 	if (np) {
291 		ret = snd_soc_of_get_dai_name(np, &codec_capture_dai);
292 		of_node_put(np);
293 		if (ret < 0) {
294 			dev_err(&pdev->dev,
295 				"%s codec_capture_dai name fail %d\n",
296 				__func__, ret);
297 			goto put_platform_node;
298 		}
299 		mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[1].dai_name =
300 			codec_capture_dai;
301 	}
302 
303 	if (device_property_present(&pdev->dev, "mediatek,mclk")) {
304 		ret = device_property_read_u32(&pdev->dev,
305 					       "mediatek,mclk",
306 					       &mt8173_rt5650_priv.pll_from);
307 		if (ret) {
308 			dev_err(&pdev->dev,
309 				"%s snd_soc_register_card fail %d\n",
310 				__func__, ret);
311 		}
312 	}
313 
314 	mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codecs->of_node =
315 		of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
316 	if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codecs->of_node) {
317 		dev_err(&pdev->dev,
318 			"Property 'audio-codec' missing or invalid\n");
319 		ret = -EINVAL;
320 		goto put_platform_node;
321 	}
322 	card->dev = &pdev->dev;
323 
324 	ret = devm_snd_soc_register_card(&pdev->dev, card);
325 
326 put_platform_node:
327 	of_node_put(platform_node);
328 	return ret;
329 }
330 
331 static const struct of_device_id mt8173_rt5650_dt_match[] = {
332 	{ .compatible = "mediatek,mt8173-rt5650", },
333 	{ }
334 };
335 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match);
336 
337 static struct platform_driver mt8173_rt5650_driver = {
338 	.driver = {
339 		   .name = "mtk-rt5650",
340 		   .of_match_table = mt8173_rt5650_dt_match,
341 		   .pm = &snd_soc_pm_ops,
342 	},
343 	.probe = mt8173_rt5650_dev_probe,
344 };
345 
346 module_platform_driver(mt8173_rt5650_driver);
347 
348 /* Module information */
349 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver");
350 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
351 MODULE_LICENSE("GPL v2");
352 MODULE_ALIAS("platform:mtk-rt5650");
353 
354