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
18enum mt8173_rt5650_mclk {
19	MT8173_RT5650_MCLK_EXTERNAL = 0,
20	MT8173_RT5650_MCLK_INTERNAL,
21};
22
23struct mt8173_rt5650_platform_data {
24	enum mt8173_rt5650_mclk pll_from;
25	/* 0 = external oscillator; 1 = internal source from mt8173 */
26};
27
28static struct mt8173_rt5650_platform_data mt8173_rt5650_priv = {
29	.pll_from = MT8173_RT5650_MCLK_EXTERNAL,
30};
31
32static const struct snd_soc_dapm_widget mt8173_rt5650_widgets[] = {
33	SND_SOC_DAPM_SPK("Speaker", 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
39static const struct snd_soc_dapm_route mt8173_rt5650_routes[] = {
40	{"Speaker", NULL, "SPOL"},
41	{"Speaker", 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
50static const struct snd_kcontrol_new mt8173_rt5650_controls[] = {
51	SOC_DAPM_PIN_SWITCH("Speaker"),
52	SOC_DAPM_PIN_SWITCH("Int Mic"),
53	SOC_DAPM_PIN_SWITCH("Headphone"),
54	SOC_DAPM_PIN_SWITCH("Headset Mic"),
55};
56
57static 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
97static const struct snd_soc_ops mt8173_rt5650_ops = {
98	.hw_params = mt8173_rt5650_hw_params,
99};
100
101static struct snd_soc_jack mt8173_rt5650_jack, mt8173_rt5650_hdmi_jack;
102
103static 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, NULL, 0);
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
147static 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, NULL, 0);
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
160enum {
161	DAI_LINK_PLAYBACK,
162	DAI_LINK_CAPTURE,
163	DAI_LINK_HDMI,
164	DAI_LINK_CODEC_I2S,
165	DAI_LINK_HDMI_I2S,
166};
167
168SND_SOC_DAILINK_DEFS(playback,
169	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
170	DAILINK_COMP_ARRAY(COMP_DUMMY()),
171	DAILINK_COMP_ARRAY(COMP_EMPTY()));
172
173SND_SOC_DAILINK_DEFS(capture,
174	DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
175	DAILINK_COMP_ARRAY(COMP_DUMMY()),
176	DAILINK_COMP_ARRAY(COMP_EMPTY()));
177
178SND_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
183SND_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
189SND_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 */
195static 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
243static 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
256static 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	if (ret)
326		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
327			__func__, ret);
328
329put_platform_node:
330	of_node_put(platform_node);
331	return ret;
332}
333
334static const struct of_device_id mt8173_rt5650_dt_match[] = {
335	{ .compatible = "mediatek,mt8173-rt5650", },
336	{ }
337};
338MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match);
339
340static struct platform_driver mt8173_rt5650_driver = {
341	.driver = {
342		   .name = "mtk-rt5650",
343		   .of_match_table = mt8173_rt5650_dt_match,
344#ifdef CONFIG_PM
345		   .pm = &snd_soc_pm_ops,
346#endif
347	},
348	.probe = mt8173_rt5650_dev_probe,
349};
350
351module_platform_driver(mt8173_rt5650_driver);
352
353/* Module information */
354MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver");
355MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
356MODULE_LICENSE("GPL v2");
357MODULE_ALIAS("platform:mtk-rt5650");
358
359