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(snd_soc_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(snd_soc_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 = snd_soc_substream_to_rtd(substream);
109 struct snd_soc_dai *codec_dai = snd_soc_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 = snd_soc_substream_to_rtd(substream);
130 struct snd_soc_dai *codec_dai = snd_soc_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 (dailink[i].codecs->name &&
249 !strcmp(dailink[i].codecs->name, "i2c-DLGS7213:00")) {
250 dai_index = i;
251 break;
252 }
253 }
254
255 /* fixup codec name based on HID */
256 adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
257 if (adev) {
258 snprintf(codec_name, sizeof(codec_name),
259 "i2c-%s", acpi_dev_name(adev));
260 dailink[dai_index].codecs->name = codec_name;
261 }
262 acpi_dev_put(adev);
263
264 /* override platform name, if required */
265 platform_name = mach->mach_params.platform;
266
267 ret_val = snd_soc_fixup_dai_links_platform_name(card, platform_name);
268 if (ret_val)
269 return ret_val;
270
271 sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
272
273 /* set card and driver name */
274 if (sof_parent) {
275 bytcht_da7213_card.name = SOF_CARD_NAME;
276 bytcht_da7213_card.driver_name = SOF_DRIVER_NAME;
277 } else {
278 bytcht_da7213_card.name = CARD_NAME;
279 bytcht_da7213_card.driver_name = DRIVER_NAME;
280 }
281
282 /* set pm ops */
283 if (sof_parent)
284 pdev->dev.driver->pm = &snd_soc_pm_ops;
285
286 ret_val = devm_snd_soc_register_card(&pdev->dev, card);
287 if (ret_val) {
288 dev_err(&pdev->dev,
289 "snd_soc_register_card failed %d\n", ret_val);
290 return ret_val;
291 }
292 platform_set_drvdata(pdev, card);
293 return ret_val;
294 }
295
296 static struct platform_driver bytcht_da7213_driver = {
297 .driver = {
298 .name = "bytcht_da7213",
299 },
300 .probe = bytcht_da7213_probe,
301 };
302 module_platform_driver(bytcht_da7213_driver);
303
304 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail+DA7213 Machine driver");
305 MODULE_AUTHOR("Pierre-Louis Bossart");
306 MODULE_LICENSE("GPL v2");
307 MODULE_ALIAS("platform:bytcht_da7213");
308
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