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026da220 ML |
1 | /* |
2 | * cht_bsw_rt5672.c - ASoc Machine driver for Intel Cherryview-based platforms | |
3 | * Cherrytrail and Braswell, with RT5672 codec. | |
4 | * | |
5 | * Copyright (C) 2014 Intel Corp | |
6 | * Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com> | |
7 | * Mengdong Lin <mengdong.lin@intel.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; version 2 of the License. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | */ | |
18 | ||
19 | #include <linux/module.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/slab.h> | |
22 | #include <sound/pcm.h> | |
23 | #include <sound/pcm_params.h> | |
24 | #include <sound/soc.h> | |
6b3b58d9 | 25 | #include <sound/jack.h> |
e56c72d5 | 26 | #include "../../codecs/rt5670.h" |
b97169da | 27 | #include "../atom/sst-atom-controls.h" |
026da220 ML |
28 | |
29 | /* The platform clock #3 outputs 19.2Mhz clock to codec as I2S MCLK */ | |
30 | #define CHT_PLAT_CLK_3_HZ 19200000 | |
31 | #define CHT_CODEC_DAI "rt5670-aif1" | |
32 | ||
6b3b58d9 JY |
33 | static struct snd_soc_jack cht_bsw_headset; |
34 | ||
35 | /* Headset jack detection DAPM pins */ | |
36 | static struct snd_soc_jack_pin cht_bsw_headset_pins[] = { | |
37 | { | |
38 | .pin = "Headset Mic", | |
39 | .mask = SND_JACK_MICROPHONE, | |
40 | }, | |
41 | { | |
42 | .pin = "Headphone", | |
43 | .mask = SND_JACK_HEADPHONE, | |
44 | }, | |
45 | }; | |
46 | ||
026da220 ML |
47 | static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card) |
48 | { | |
49 | int i; | |
50 | ||
51 | for (i = 0; i < card->num_rtd; i++) { | |
52 | struct snd_soc_pcm_runtime *rtd; | |
53 | ||
54 | rtd = card->rtd + i; | |
55 | if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI, | |
56 | strlen(CHT_CODEC_DAI))) | |
57 | return rtd->codec_dai; | |
58 | } | |
59 | return NULL; | |
60 | } | |
61 | ||
62 | static int platform_clock_control(struct snd_soc_dapm_widget *w, | |
63 | struct snd_kcontrol *k, int event) | |
64 | { | |
65 | struct snd_soc_dapm_context *dapm = w->dapm; | |
66 | struct snd_soc_card *card = dapm->card; | |
67 | struct snd_soc_dai *codec_dai; | |
8d0c38a3 | 68 | int ret; |
026da220 ML |
69 | |
70 | codec_dai = cht_get_codec_dai(card); | |
71 | if (!codec_dai) { | |
72 | dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n"); | |
73 | return -EIO; | |
74 | } | |
75 | ||
8d0c38a3 JY |
76 | if (SND_SOC_DAPM_EVENT_ON(event)) { |
77 | /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ | |
78 | ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, | |
79 | CHT_PLAT_CLK_3_HZ, 48000 * 512); | |
80 | if (ret < 0) { | |
81 | dev_err(card->dev, "can't set codec pll: %d\n", ret); | |
82 | return ret; | |
83 | } | |
026da220 | 84 | |
8d0c38a3 JY |
85 | /* set codec sysclk source to PLL */ |
86 | ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, | |
87 | 48000 * 512, SND_SOC_CLOCK_IN); | |
88 | if (ret < 0) { | |
89 | dev_err(card->dev, "can't set codec sysclk: %d\n", ret); | |
90 | return ret; | |
91 | } | |
92 | } else { | |
93 | /* Set codec sysclk source to its internal clock because codec | |
94 | * PLL will be off when idle and MCLK will also be off by ACPI | |
95 | * when codec is runtime suspended. Codec needs clock for jack | |
96 | * detection and button press. | |
97 | */ | |
98 | snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_RCCLK, | |
99 | 48000 * 512, SND_SOC_CLOCK_IN); | |
100 | } | |
026da220 ML |
101 | return 0; |
102 | } | |
103 | ||
104 | static const struct snd_soc_dapm_widget cht_dapm_widgets[] = { | |
105 | SND_SOC_DAPM_HP("Headphone", NULL), | |
106 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
107 | SND_SOC_DAPM_MIC("Int Mic", NULL), | |
108 | SND_SOC_DAPM_SPK("Ext Spk", NULL), | |
109 | SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, | |
8d0c38a3 JY |
110 | platform_clock_control, SND_SOC_DAPM_PRE_PMU | |
111 | SND_SOC_DAPM_POST_PMD), | |
026da220 ML |
112 | }; |
113 | ||
114 | static const struct snd_soc_dapm_route cht_audio_map[] = { | |
115 | {"IN1P", NULL, "Headset Mic"}, | |
116 | {"IN1N", NULL, "Headset Mic"}, | |
117 | {"DMIC L1", NULL, "Int Mic"}, | |
118 | {"DMIC R1", NULL, "Int Mic"}, | |
119 | {"Headphone", NULL, "HPOL"}, | |
120 | {"Headphone", NULL, "HPOR"}, | |
121 | {"Ext Spk", NULL, "SPOLP"}, | |
122 | {"Ext Spk", NULL, "SPOLN"}, | |
123 | {"Ext Spk", NULL, "SPORP"}, | |
124 | {"Ext Spk", NULL, "SPORN"}, | |
125 | {"AIF1 Playback", NULL, "ssp2 Tx"}, | |
126 | {"ssp2 Tx", NULL, "codec_out0"}, | |
127 | {"ssp2 Tx", NULL, "codec_out1"}, | |
128 | {"codec_in0", NULL, "ssp2 Rx"}, | |
129 | {"codec_in1", NULL, "ssp2 Rx"}, | |
130 | {"ssp2 Rx", NULL, "AIF1 Capture"}, | |
131 | {"Headphone", NULL, "Platform Clock"}, | |
132 | {"Headset Mic", NULL, "Platform Clock"}, | |
133 | {"Int Mic", NULL, "Platform Clock"}, | |
134 | {"Ext Spk", NULL, "Platform Clock"}, | |
135 | }; | |
136 | ||
137 | static const struct snd_kcontrol_new cht_mc_controls[] = { | |
138 | SOC_DAPM_PIN_SWITCH("Headphone"), | |
139 | SOC_DAPM_PIN_SWITCH("Headset Mic"), | |
140 | SOC_DAPM_PIN_SWITCH("Int Mic"), | |
141 | SOC_DAPM_PIN_SWITCH("Ext Spk"), | |
142 | }; | |
143 | ||
144 | static int cht_aif1_hw_params(struct snd_pcm_substream *substream, | |
145 | struct snd_pcm_hw_params *params) | |
146 | { | |
147 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
148 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
149 | int ret; | |
150 | ||
151 | /* set codec PLL source to the 19.2MHz platform clock (MCLK) */ | |
152 | ret = snd_soc_dai_set_pll(codec_dai, 0, RT5670_PLL1_S_MCLK, | |
153 | CHT_PLAT_CLK_3_HZ, params_rate(params) * 512); | |
154 | if (ret < 0) { | |
155 | dev_err(rtd->dev, "can't set codec pll: %d\n", ret); | |
156 | return ret; | |
157 | } | |
158 | ||
159 | /* set codec sysclk source to PLL */ | |
160 | ret = snd_soc_dai_set_sysclk(codec_dai, RT5670_SCLK_S_PLL1, | |
161 | params_rate(params) * 512, | |
162 | SND_SOC_CLOCK_IN); | |
163 | if (ret < 0) { | |
164 | dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret); | |
165 | return ret; | |
166 | } | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static int cht_codec_init(struct snd_soc_pcm_runtime *runtime) | |
171 | { | |
172 | int ret; | |
173 | struct snd_soc_dai *codec_dai = runtime->codec_dai; | |
eb55fab9 | 174 | struct snd_soc_codec *codec = codec_dai->codec; |
026da220 ML |
175 | |
176 | /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */ | |
177 | ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24); | |
178 | if (ret < 0) { | |
179 | dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret); | |
180 | return ret; | |
181 | } | |
182 | ||
eb55fab9 ML |
183 | /* Select codec ASRC clock source to track I2S1 clock, because codec |
184 | * is in slave mode and 100fs I2S format (BCLK = 100 * LRCLK) cannot | |
185 | * be supported by RT5672. Otherwise, ASRC will be disabled and cause | |
186 | * noise. | |
187 | */ | |
188 | rt5670_sel_asrc_clk_src(codec, | |
189 | RT5670_DA_STEREO_FILTER | |
190 | | RT5670_DA_MONO_L_FILTER | |
191 | | RT5670_DA_MONO_R_FILTER | |
192 | | RT5670_AD_STEREO_FILTER | |
193 | | RT5670_AD_MONO_L_FILTER | |
194 | | RT5670_AD_MONO_R_FILTER, | |
195 | RT5670_CLK_SEL_I2S1_ASRC); | |
6b3b58d9 JY |
196 | |
197 | ret = snd_soc_card_jack_new(runtime->card, "Headset", | |
198 | SND_JACK_HEADSET | SND_JACK_BTN_0 | | |
199 | SND_JACK_BTN_1 | SND_JACK_BTN_2, &cht_bsw_headset, | |
200 | cht_bsw_headset_pins, ARRAY_SIZE(cht_bsw_headset_pins)); | |
201 | if (ret) | |
202 | return ret; | |
203 | ||
204 | rt5670_set_jack_detect(codec, &cht_bsw_headset); | |
026da220 ML |
205 | return 0; |
206 | } | |
207 | ||
208 | static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd, | |
209 | struct snd_pcm_hw_params *params) | |
210 | { | |
211 | struct snd_interval *rate = hw_param_interval(params, | |
212 | SNDRV_PCM_HW_PARAM_RATE); | |
213 | struct snd_interval *channels = hw_param_interval(params, | |
214 | SNDRV_PCM_HW_PARAM_CHANNELS); | |
215 | ||
216 | /* The DSP will covert the FE rate to 48k, stereo, 24bits */ | |
217 | rate->min = rate->max = 48000; | |
218 | channels->min = channels->max = 2; | |
219 | ||
220 | /* set SSP2 to 24-bit */ | |
369a9f5f | 221 | params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); |
026da220 ML |
222 | return 0; |
223 | } | |
224 | ||
225 | static unsigned int rates_48000[] = { | |
226 | 48000, | |
227 | }; | |
228 | ||
229 | static struct snd_pcm_hw_constraint_list constraints_48000 = { | |
230 | .count = ARRAY_SIZE(rates_48000), | |
231 | .list = rates_48000, | |
232 | }; | |
233 | ||
234 | static int cht_aif1_startup(struct snd_pcm_substream *substream) | |
235 | { | |
236 | return snd_pcm_hw_constraint_list(substream->runtime, 0, | |
237 | SNDRV_PCM_HW_PARAM_RATE, | |
238 | &constraints_48000); | |
239 | } | |
240 | ||
241 | static struct snd_soc_ops cht_aif1_ops = { | |
242 | .startup = cht_aif1_startup, | |
243 | }; | |
244 | ||
245 | static struct snd_soc_ops cht_be_ssp2_ops = { | |
246 | .hw_params = cht_aif1_hw_params, | |
247 | }; | |
248 | ||
249 | static struct snd_soc_dai_link cht_dailink[] = { | |
250 | /* Front End DAI links */ | |
251 | [MERR_DPCM_AUDIO] = { | |
252 | .name = "Audio Port", | |
253 | .stream_name = "Audio", | |
254 | .cpu_dai_name = "media-cpu-dai", | |
255 | .codec_dai_name = "snd-soc-dummy-dai", | |
256 | .codec_name = "snd-soc-dummy", | |
257 | .platform_name = "sst-mfld-platform", | |
76ca1c2c | 258 | .nonatomic = true, |
026da220 ML |
259 | .dynamic = 1, |
260 | .dpcm_playback = 1, | |
261 | .dpcm_capture = 1, | |
262 | .ops = &cht_aif1_ops, | |
263 | }, | |
264 | [MERR_DPCM_COMPR] = { | |
265 | .name = "Compressed Port", | |
266 | .stream_name = "Compress", | |
267 | .cpu_dai_name = "compress-cpu-dai", | |
268 | .codec_dai_name = "snd-soc-dummy-dai", | |
269 | .codec_name = "snd-soc-dummy", | |
270 | .platform_name = "sst-mfld-platform", | |
271 | }, | |
272 | ||
273 | /* Back End DAI links */ | |
274 | { | |
275 | /* SSP2 - Codec */ | |
276 | .name = "SSP2-Codec", | |
277 | .be_id = 1, | |
278 | .cpu_dai_name = "ssp2-port", | |
279 | .platform_name = "sst-mfld-platform", | |
280 | .no_pcm = 1, | |
76ca1c2c | 281 | .nonatomic = true, |
026da220 ML |
282 | .codec_dai_name = "rt5670-aif1", |
283 | .codec_name = "i2c-10EC5670:00", | |
284 | .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF | |
285 | | SND_SOC_DAIFMT_CBS_CFS, | |
286 | .init = cht_codec_init, | |
287 | .be_hw_params_fixup = cht_codec_fixup, | |
026da220 ML |
288 | .dpcm_playback = 1, |
289 | .dpcm_capture = 1, | |
290 | .ops = &cht_be_ssp2_ops, | |
291 | }, | |
292 | }; | |
293 | ||
066d7b87 JY |
294 | static int cht_suspend_pre(struct snd_soc_card *card) |
295 | { | |
296 | struct snd_soc_codec *codec; | |
297 | ||
298 | list_for_each_entry(codec, &card->codec_dev_list, card_list) { | |
299 | if (!strcmp(codec->component.name, "i2c-10EC5670:00")) { | |
300 | dev_dbg(codec->dev, "disabling jack detect before going to suspend.\n"); | |
301 | rt5670_jack_suspend(codec); | |
302 | break; | |
303 | } | |
304 | } | |
305 | return 0; | |
306 | } | |
307 | ||
308 | static int cht_resume_post(struct snd_soc_card *card) | |
309 | { | |
310 | struct snd_soc_codec *codec; | |
311 | ||
312 | list_for_each_entry(codec, &card->codec_dev_list, card_list) { | |
313 | if (!strcmp(codec->component.name, "i2c-10EC5670:00")) { | |
314 | dev_dbg(codec->dev, "enabling jack detect for resume.\n"); | |
315 | rt5670_jack_resume(codec); | |
316 | break; | |
317 | } | |
318 | } | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
026da220 ML |
323 | /* SoC card */ |
324 | static struct snd_soc_card snd_soc_card_cht = { | |
325 | .name = "cherrytrailcraudio", | |
326 | .dai_link = cht_dailink, | |
327 | .num_links = ARRAY_SIZE(cht_dailink), | |
328 | .dapm_widgets = cht_dapm_widgets, | |
329 | .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets), | |
330 | .dapm_routes = cht_audio_map, | |
331 | .num_dapm_routes = ARRAY_SIZE(cht_audio_map), | |
332 | .controls = cht_mc_controls, | |
333 | .num_controls = ARRAY_SIZE(cht_mc_controls), | |
066d7b87 JY |
334 | .suspend_pre = cht_suspend_pre, |
335 | .resume_post = cht_resume_post, | |
026da220 ML |
336 | }; |
337 | ||
338 | static int snd_cht_mc_probe(struct platform_device *pdev) | |
339 | { | |
340 | int ret_val = 0; | |
341 | ||
342 | /* register the soc card */ | |
343 | snd_soc_card_cht.dev = &pdev->dev; | |
344 | ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht); | |
345 | if (ret_val) { | |
346 | dev_err(&pdev->dev, | |
347 | "snd_soc_register_card failed %d\n", ret_val); | |
348 | return ret_val; | |
349 | } | |
350 | platform_set_drvdata(pdev, &snd_soc_card_cht); | |
351 | return ret_val; | |
352 | } | |
353 | ||
354 | static struct platform_driver snd_cht_mc_driver = { | |
355 | .driver = { | |
026da220 | 356 | .name = "cht-bsw-rt5672", |
026da220 ML |
357 | }, |
358 | .probe = snd_cht_mc_probe, | |
359 | }; | |
360 | ||
361 | module_platform_driver(snd_cht_mc_driver); | |
362 | ||
363 | MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver"); | |
364 | MODULE_AUTHOR("Subhransu S. Prusty, Mengdong Lin"); | |
365 | MODULE_LICENSE("GPL v2"); | |
366 | MODULE_ALIAS("platform:cht-bsw-rt5672"); |