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
25static 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
32static 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
39static 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
60static 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(p: 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), tx_mask: 0x3, rx_mask: 0x3, slots: 2, slot_width: 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
99static int aif1_startup(struct snd_pcm_substream *substream)
100{
101 return snd_pcm_hw_constraint_single(runtime: substream->runtime,
102 SNDRV_PCM_HW_PARAM_RATE, val: 48000);
103}
104
105static 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(dai: codec_dai, clk_id: DA7213_CLKSRC_MCLK,
113 freq: 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(dai: codec_dai, pll_id: 0,
118 source: DA7213_SYSCLK_PLL_SRM, freq_in: 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
127static 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(dai: codec_dai, pll_id: 0,
134 source: DA7213_SYSCLK_MCLK, freq_in: 0, freq_out: 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
143static const struct snd_soc_ops aif1_ops = {
144 .startup = aif1_startup,
145};
146
147static const struct snd_soc_ops ssp2_ops = {
148 .hw_params = aif1_hw_params,
149 .hw_free = aif1_hw_free,
150
151};
152
153SND_SOC_DAILINK_DEF(dummy,
154 DAILINK_COMP_ARRAY(COMP_DUMMY()));
155
156SND_SOC_DAILINK_DEF(media,
157 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
158
159SND_SOC_DAILINK_DEF(deepbuffer,
160 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
161
162SND_SOC_DAILINK_DEF(ssp2_port,
163 DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
164SND_SOC_DAILINK_DEF(ssp2_codec,
165 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-DLGS7213:00",
166 "da7213-hifi")));
167
168SND_SOC_DAILINK_DEF(platform,
169 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
170
171static 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 .ops = &aif1_ops,
178 SND_SOC_DAILINK_REG(media, dummy, platform),
179 },
180 [MERR_DPCM_DEEP_BUFFER] = {
181 .name = "Deep-Buffer Audio Port",
182 .stream_name = "Deep-Buffer Audio",
183 .nonatomic = true,
184 .dynamic = 1,
185 .playback_only = 1,
186 .ops = &aif1_ops,
187 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
188 },
189 /* CODEC<->CODEC link */
190 /* back ends */
191 {
192 .name = "SSP2-Codec",
193 .id = 0,
194 .no_pcm = 1,
195 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
196 | SND_SOC_DAIFMT_CBC_CFC,
197 .be_hw_params_fixup = codec_fixup,
198 .ops = &ssp2_ops,
199 SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
200 },
201};
202
203/* use space before codec name to simplify card ID, and simplify driver name */
204#define SOF_CARD_NAME "bytcht da7213" /* card name will be 'sof-bytcht da7213' */
205#define SOF_DRIVER_NAME "SOF"
206
207#define CARD_NAME "bytcht-da7213"
208#define DRIVER_NAME NULL /* card name will be used for driver name */
209
210/* SoC card */
211static struct snd_soc_card bytcht_da7213_card = {
212 .name = CARD_NAME,
213 .driver_name = DRIVER_NAME,
214 .owner = THIS_MODULE,
215 .dai_link = dailink,
216 .num_links = ARRAY_SIZE(dailink),
217 .controls = controls,
218 .num_controls = ARRAY_SIZE(controls),
219 .dapm_widgets = dapm_widgets,
220 .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
221 .dapm_routes = audio_map,
222 .num_dapm_routes = ARRAY_SIZE(audio_map),
223};
224
225static char codec_name[SND_ACPI_I2C_ID_LEN];
226
227static int bytcht_da7213_probe(struct platform_device *pdev)
228{
229 struct snd_soc_card *card;
230 struct snd_soc_acpi_mach *mach;
231 const char *platform_name;
232 struct acpi_device *adev;
233 bool sof_parent;
234 int dai_index = 0;
235 int ret_val = 0;
236 int i;
237
238 mach = pdev->dev.platform_data;
239 card = &bytcht_da7213_card;
240 card->dev = &pdev->dev;
241
242 /* fix index of codec dai */
243 for (i = 0; i < ARRAY_SIZE(dailink); i++) {
244 if (dailink[i].num_codecs &&
245 !strcmp(dailink[i].codecs->name, "i2c-DLGS7213:00")) {
246 dai_index = i;
247 break;
248 }
249 }
250
251 /* fixup codec name based on HID */
252 adev = acpi_dev_get_first_match_dev(hid: mach->id, NULL, hrv: -1);
253 if (adev) {
254 snprintf(buf: codec_name, size: sizeof(codec_name),
255 fmt: "i2c-%s", acpi_dev_name(adev));
256 dailink[dai_index].codecs->name = codec_name;
257 } else {
258 dev_err(&pdev->dev, "Error cannot find '%s' dev\n", mach->id);
259 return -ENOENT;
260 }
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(dev: &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(dev: &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, data: card);
293 return ret_val;
294}
295
296static struct platform_driver bytcht_da7213_driver = {
297 .driver = {
298 .name = "bytcht_da7213",
299 },
300 .probe = bytcht_da7213_probe,
301};
302module_platform_driver(bytcht_da7213_driver);
303
304MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail+DA7213 Machine driver");
305MODULE_AUTHOR("Pierre-Louis Bossart");
306MODULE_LICENSE("GPL v2");
307MODULE_ALIAS("platform:bytcht_da7213");
308

source code of linux/sound/soc/intel/boards/bytcht_da7213.c