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 struct snd_soc_jack_pin mt8173_rt5650_jack_pins[] = {
58 {
59 .pin = "Headphone",
60 .mask = SND_JACK_HEADPHONE,
61 },
62 {
63 .pin = "Headset Mic",
64 .mask = SND_JACK_MICROPHONE,
65 },
66 };
67
mt8173_rt5650_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)68 static int mt8173_rt5650_hw_params(struct snd_pcm_substream *substream,
69 struct snd_pcm_hw_params *params)
70 {
71 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
72 unsigned int mclk_clock;
73 struct snd_soc_dai *codec_dai;
74 int i, ret;
75
76 switch (mt8173_rt5650_priv.pll_from) {
77 case MT8173_RT5650_MCLK_EXTERNAL:
78 /* mclk = 12.288M */
79 mclk_clock = MCLK_FOR_CODECS;
80 break;
81 case MT8173_RT5650_MCLK_INTERNAL:
82 /* mclk = sampling rate*256 */
83 mclk_clock = params_rate(params) * 256;
84 break;
85 default:
86 /* mclk = 12.288M */
87 mclk_clock = MCLK_FOR_CODECS;
88 break;
89 }
90
91 for_each_rtd_codec_dais(rtd, i, codec_dai) {
92 /* pll from mclk */
93 ret = snd_soc_dai_set_pll(codec_dai, 0, 0, mclk_clock,
94 params_rate(params) * 512);
95 if (ret)
96 return ret;
97
98 /* sysclk from pll */
99 ret = snd_soc_dai_set_sysclk(codec_dai, 1,
100 params_rate(params) * 512,
101 SND_SOC_CLOCK_IN);
102 if (ret)
103 return ret;
104 }
105 return 0;
106 }
107
108 static const struct snd_soc_ops mt8173_rt5650_ops = {
109 .hw_params = mt8173_rt5650_hw_params,
110 };
111
112 static struct snd_soc_jack mt8173_rt5650_jack, mt8173_rt5650_hdmi_jack;
113
mt8173_rt5650_init(struct snd_soc_pcm_runtime * runtime)114 static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)
115 {
116 struct snd_soc_card *card = runtime->card;
117 struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
118 const char *codec_capture_dai = asoc_rtd_to_codec(runtime, 1)->name;
119 int ret;
120
121 rt5645_sel_asrc_clk_src(component,
122 RT5645_DA_STEREO_FILTER,
123 RT5645_CLK_SEL_I2S1_ASRC);
124
125 if (!strcmp(codec_capture_dai, "rt5645-aif1")) {
126 rt5645_sel_asrc_clk_src(component,
127 RT5645_AD_STEREO_FILTER,
128 RT5645_CLK_SEL_I2S1_ASRC);
129 } else if (!strcmp(codec_capture_dai, "rt5645-aif2")) {
130 rt5645_sel_asrc_clk_src(component,
131 RT5645_AD_STEREO_FILTER,
132 RT5645_CLK_SEL_I2S2_ASRC);
133 } else {
134 dev_warn(card->dev,
135 "Only one dai codec found in DTS, enabled rt5645 AD filter\n");
136 rt5645_sel_asrc_clk_src(component,
137 RT5645_AD_STEREO_FILTER,
138 RT5645_CLK_SEL_I2S1_ASRC);
139 }
140
141 /* enable jack detection */
142 ret = snd_soc_card_jack_new_pins(card, "Headset Jack",
143 SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
144 SND_JACK_BTN_0 | SND_JACK_BTN_1 |
145 SND_JACK_BTN_2 | SND_JACK_BTN_3,
146 &mt8173_rt5650_jack,
147 mt8173_rt5650_jack_pins,
148 ARRAY_SIZE(mt8173_rt5650_jack_pins));
149 if (ret) {
150 dev_err(card->dev, "Can't new Headset Jack %d\n", ret);
151 return ret;
152 }
153
154 return rt5645_set_jack_detect(component,
155 &mt8173_rt5650_jack,
156 &mt8173_rt5650_jack,
157 &mt8173_rt5650_jack);
158 }
159
mt8173_rt5650_hdmi_init(struct snd_soc_pcm_runtime * rtd)160 static int mt8173_rt5650_hdmi_init(struct snd_soc_pcm_runtime *rtd)
161 {
162 int ret;
163
164 ret = snd_soc_card_jack_new(rtd->card, "HDMI Jack", SND_JACK_LINEOUT,
165 &mt8173_rt5650_hdmi_jack);
166 if (ret)
167 return ret;
168
169 return snd_soc_component_set_jack(asoc_rtd_to_codec(rtd, 0)->component,
170 &mt8173_rt5650_hdmi_jack, NULL);
171 }
172
173 enum {
174 DAI_LINK_PLAYBACK,
175 DAI_LINK_CAPTURE,
176 DAI_LINK_HDMI,
177 DAI_LINK_CODEC_I2S,
178 DAI_LINK_HDMI_I2S,
179 };
180
181 SND_SOC_DAILINK_DEFS(playback,
182 DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
183 DAILINK_COMP_ARRAY(COMP_DUMMY()),
184 DAILINK_COMP_ARRAY(COMP_EMPTY()));
185
186 SND_SOC_DAILINK_DEFS(capture,
187 DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
188 DAILINK_COMP_ARRAY(COMP_DUMMY()),
189 DAILINK_COMP_ARRAY(COMP_EMPTY()));
190
191 SND_SOC_DAILINK_DEFS(hdmi_pcm,
192 DAILINK_COMP_ARRAY(COMP_CPU("HDMI")),
193 DAILINK_COMP_ARRAY(COMP_DUMMY()),
194 DAILINK_COMP_ARRAY(COMP_EMPTY()));
195
196 SND_SOC_DAILINK_DEFS(codec,
197 DAILINK_COMP_ARRAY(COMP_CPU("I2S")),
198 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5645-aif1"), /* Playback */
199 COMP_CODEC(NULL, "rt5645-aif1")),/* Capture */
200 DAILINK_COMP_ARRAY(COMP_EMPTY()));
201
202 SND_SOC_DAILINK_DEFS(hdmi_be,
203 DAILINK_COMP_ARRAY(COMP_CPU("HDMIO")),
204 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "i2s-hifi")),
205 DAILINK_COMP_ARRAY(COMP_EMPTY()));
206
207 /* Digital audio interface glue - connects codec <---> CPU */
208 static struct snd_soc_dai_link mt8173_rt5650_dais[] = {
209 /* Front End DAI links */
210 [DAI_LINK_PLAYBACK] = {
211 .name = "rt5650 Playback",
212 .stream_name = "rt5650 Playback",
213 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
214 .dynamic = 1,
215 .dpcm_playback = 1,
216 SND_SOC_DAILINK_REG(playback),
217 },
218 [DAI_LINK_CAPTURE] = {
219 .name = "rt5650 Capture",
220 .stream_name = "rt5650 Capture",
221 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
222 .dynamic = 1,
223 .dpcm_capture = 1,
224 SND_SOC_DAILINK_REG(capture),
225 },
226 [DAI_LINK_HDMI] = {
227 .name = "HDMI",
228 .stream_name = "HDMI PCM",
229 .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
230 .dynamic = 1,
231 .dpcm_playback = 1,
232 SND_SOC_DAILINK_REG(hdmi_pcm),
233 },
234 /* Back End DAI links */
235 [DAI_LINK_CODEC_I2S] = {
236 .name = "Codec",
237 .no_pcm = 1,
238 .init = mt8173_rt5650_init,
239 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
240 SND_SOC_DAIFMT_CBS_CFS,
241 .ops = &mt8173_rt5650_ops,
242 .ignore_pmdown_time = 1,
243 .dpcm_playback = 1,
244 .dpcm_capture = 1,
245 SND_SOC_DAILINK_REG(codec),
246 },
247 [DAI_LINK_HDMI_I2S] = {
248 .name = "HDMI BE",
249 .no_pcm = 1,
250 .dpcm_playback = 1,
251 .init = mt8173_rt5650_hdmi_init,
252 SND_SOC_DAILINK_REG(hdmi_be),
253 },
254 };
255
256 static struct snd_soc_card mt8173_rt5650_card = {
257 .name = "mtk-rt5650",
258 .owner = THIS_MODULE,
259 .dai_link = mt8173_rt5650_dais,
260 .num_links = ARRAY_SIZE(mt8173_rt5650_dais),
261 .controls = mt8173_rt5650_controls,
262 .num_controls = ARRAY_SIZE(mt8173_rt5650_controls),
263 .dapm_widgets = mt8173_rt5650_widgets,
264 .num_dapm_widgets = ARRAY_SIZE(mt8173_rt5650_widgets),
265 .dapm_routes = mt8173_rt5650_routes,
266 .num_dapm_routes = ARRAY_SIZE(mt8173_rt5650_routes),
267 };
268
mt8173_rt5650_dev_probe(struct platform_device * pdev)269 static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
270 {
271 struct snd_soc_card *card = &mt8173_rt5650_card;
272 struct device_node *platform_node;
273 struct device_node *np;
274 const char *codec_capture_dai;
275 struct snd_soc_dai_link *dai_link;
276 int i, ret;
277
278 platform_node = of_parse_phandle(pdev->dev.of_node,
279 "mediatek,platform", 0);
280 if (!platform_node) {
281 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
282 return -EINVAL;
283 }
284
285 for_each_card_prelinks(card, i, dai_link) {
286 if (dai_link->platforms->name)
287 continue;
288 dai_link->platforms->of_node = platform_node;
289 }
290
291 mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node =
292 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 0);
293 if (!mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node) {
294 dev_err(&pdev->dev,
295 "Property 'audio-codec' missing or invalid\n");
296 ret = -EINVAL;
297 goto put_platform_node;
298 }
299 mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[1].of_node =
300 mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[0].of_node;
301
302 np = of_get_child_by_name(pdev->dev.of_node, "codec-capture");
303 if (np) {
304 ret = snd_soc_of_get_dai_name(np, &codec_capture_dai, 0);
305 of_node_put(np);
306 if (ret < 0) {
307 dev_err(&pdev->dev,
308 "%s codec_capture_dai name fail %d\n",
309 __func__, ret);
310 goto put_platform_node;
311 }
312 mt8173_rt5650_dais[DAI_LINK_CODEC_I2S].codecs[1].dai_name =
313 codec_capture_dai;
314 }
315
316 if (device_property_present(&pdev->dev, "mediatek,mclk")) {
317 ret = device_property_read_u32(&pdev->dev,
318 "mediatek,mclk",
319 &mt8173_rt5650_priv.pll_from);
320 if (ret) {
321 dev_err(&pdev->dev,
322 "%s snd_soc_register_card fail %d\n",
323 __func__, ret);
324 }
325 }
326
327 mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codecs->of_node =
328 of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
329 if (!mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codecs->of_node) {
330 dev_err(&pdev->dev,
331 "Property 'audio-codec' missing or invalid\n");
332 ret = -EINVAL;
333 goto put_platform_node;
334 }
335 card->dev = &pdev->dev;
336
337 ret = devm_snd_soc_register_card(&pdev->dev, card);
338
339 put_platform_node:
340 of_node_put(platform_node);
341 return ret;
342 }
343
344 static const struct of_device_id mt8173_rt5650_dt_match[] = {
345 { .compatible = "mediatek,mt8173-rt5650", },
346 { }
347 };
348 MODULE_DEVICE_TABLE(of, mt8173_rt5650_dt_match);
349
350 static struct platform_driver mt8173_rt5650_driver = {
351 .driver = {
352 .name = "mtk-rt5650",
353 .of_match_table = mt8173_rt5650_dt_match,
354 .pm = &snd_soc_pm_ops,
355 },
356 .probe = mt8173_rt5650_dev_probe,
357 };
358
359 module_platform_driver(mt8173_rt5650_driver);
360
361 /* Module information */
362 MODULE_DESCRIPTION("MT8173 RT5650 SoC machine driver");
363 MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
364 MODULE_LICENSE("GPL v2");
365 MODULE_ALIAS("platform:mtk-rt5650");
366
367