1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * cht-bsw-nau8824.c - ASoc Machine driver for Intel Cherryview-based
4 * platforms Cherrytrail and Braswell, with nau8824 codec.
5 *
6 * Copyright (C) 2018 Intel Corp
7 * Copyright (C) 2018 Nuvoton Technology Corp
8 *
9 * Author: Wang, Joseph C <joequant@gmail.com>
10 * Co-author: John Hsu <KCHSU0@nuvoton.com>
11 * This file is based on cht_bsw_rt5672.c and cht-bsw-max98090.c
12 */
13
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/slab.h>
17#include <sound/pcm.h>
18#include <sound/pcm_params.h>
19#include <sound/soc.h>
20#include <sound/soc-acpi.h>
21#include <sound/jack.h>
22#include <linux/input.h>
23#include "../atom/sst-atom-controls.h"
24#include "../../codecs/nau8824.h"
25
26struct cht_mc_private {
27 struct snd_soc_jack jack;
28};
29
30static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
31 {
32 .pin = "Headphone",
33 .mask = SND_JACK_HEADPHONE,
34 },
35 {
36 .pin = "Headset Mic",
37 .mask = SND_JACK_MICROPHONE,
38 },
39};
40
41static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
42 SND_SOC_DAPM_HP("Headphone", NULL),
43 SND_SOC_DAPM_MIC("Headset Mic", NULL),
44 SND_SOC_DAPM_MIC("Int Mic", NULL),
45 SND_SOC_DAPM_SPK("Ext Spk", NULL),
46};
47
48static const struct snd_soc_dapm_route cht_audio_map[] = {
49 {"Ext Spk", NULL, "SPKOUTL"},
50 {"Ext Spk", NULL, "SPKOUTR"},
51 {"Headphone", NULL, "HPOL"},
52 {"Headphone", NULL, "HPOR"},
53 {"MIC1", NULL, "Int Mic"},
54 {"MIC2", NULL, "Int Mic"},
55 {"HSMIC1", NULL, "Headset Mic"},
56 {"HSMIC2", NULL, "Headset Mic"},
57 {"Playback", NULL, "ssp2 Tx"},
58 {"ssp2 Tx", NULL, "codec_out0"},
59 {"ssp2 Tx", NULL, "codec_out1"},
60 {"codec_in0", NULL, "ssp2 Rx" },
61 {"codec_in1", NULL, "ssp2 Rx" },
62 {"ssp2 Rx", NULL, "Capture"},
63};
64
65static const struct snd_kcontrol_new cht_mc_controls[] = {
66 SOC_DAPM_PIN_SWITCH("Headphone"),
67 SOC_DAPM_PIN_SWITCH("Headset Mic"),
68 SOC_DAPM_PIN_SWITCH("Int Mic"),
69 SOC_DAPM_PIN_SWITCH("Ext Spk"),
70};
71
72static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
73 struct snd_pcm_hw_params *params)
74{
75 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
76 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
77 int ret;
78
79 ret = snd_soc_dai_set_sysclk(dai: codec_dai, clk_id: NAU8824_CLK_FLL_FS, freq: 0,
80 SND_SOC_CLOCK_IN);
81 if (ret < 0) {
82 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
83 return ret;
84 }
85 ret = snd_soc_dai_set_pll(dai: codec_dai, pll_id: 0, source: 0, freq_in: params_rate(p: params),
86 freq_out: params_rate(p: params) * 256);
87 if (ret < 0) {
88 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
89 return ret;
90 }
91
92 return 0;
93}
94
95static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
96{
97 struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card: runtime->card);
98 struct snd_soc_jack *jack = &ctx->jack;
99 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);
100 struct snd_soc_component *component = codec_dai->component;
101 int ret, jack_type;
102
103 /* NAU88L24 supports 4 buttons headset detection
104 * KEY_PLAYPAUSE
105 * KEY_VOICECOMMAND
106 * KEY_VOLUMEUP
107 * KEY_VOLUMEDOWN
108 */
109 jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
110 SND_JACK_BTN_2 | SND_JACK_BTN_3;
111 ret = snd_soc_card_jack_new_pins(card: runtime->card, id: "Headset", type: jack_type,
112 jack, pins: cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
113 if (ret) {
114 dev_err(runtime->dev,
115 "Headset Jack creation failed %d\n", ret);
116 return ret;
117 }
118 snd_jack_set_key(jack: jack->jack, type: SND_JACK_BTN_0, KEY_PLAYPAUSE);
119 snd_jack_set_key(jack: jack->jack, type: SND_JACK_BTN_1, KEY_VOICECOMMAND);
120 snd_jack_set_key(jack: jack->jack, type: SND_JACK_BTN_2, KEY_VOLUMEUP);
121 snd_jack_set_key(jack: jack->jack, type: SND_JACK_BTN_3, KEY_VOLUMEDOWN);
122
123 nau8824_enable_jack_detect(component, jack);
124
125 return ret;
126}
127
128static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
129 struct snd_pcm_hw_params *params)
130{
131 struct snd_interval *rate = hw_param_interval(params,
132 SNDRV_PCM_HW_PARAM_RATE);
133 struct snd_interval *channels = hw_param_interval(params,
134 SNDRV_PCM_HW_PARAM_CHANNELS);
135 struct snd_mask *fmt =
136 hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
137 int ret;
138
139 /* The DSP will convert the FE rate to 48k, stereo, 24bits */
140 rate->min = rate->max = 48000;
141 channels->min = channels->max = 2;
142
143 /* set SSP2 to 24-bit */
144 snd_mask_none(mask: fmt);
145 params_set_format(p: params, SNDRV_PCM_FORMAT_S24_LE);
146
147 /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
148 ret = snd_soc_dai_set_tdm_slot(snd_soc_rtd_to_codec(rtd, 0), tx_mask: 0xf, rx_mask: 0x1, slots: 4, slot_width: 24);
149 if (ret < 0) {
150 dev_err(rtd->dev, "can't set codec TDM slot %d\n", ret);
151 return ret;
152 }
153
154 return 0;
155}
156
157static int cht_aif1_startup(struct snd_pcm_substream *substream)
158{
159 return snd_pcm_hw_constraint_single(runtime: substream->runtime,
160 SNDRV_PCM_HW_PARAM_RATE, val: 48000);
161}
162
163static const struct snd_soc_ops cht_aif1_ops = {
164 .startup = cht_aif1_startup,
165};
166
167static const struct snd_soc_ops cht_be_ssp2_ops = {
168 .hw_params = cht_aif1_hw_params,
169};
170
171SND_SOC_DAILINK_DEF(dummy,
172 DAILINK_COMP_ARRAY(COMP_DUMMY()));
173
174SND_SOC_DAILINK_DEF(media,
175 DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
176
177SND_SOC_DAILINK_DEF(deepbuffer,
178 DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
179
180SND_SOC_DAILINK_DEF(ssp2_port,
181 DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
182SND_SOC_DAILINK_DEF(ssp2_codec,
183 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
184 NAU8824_CODEC_DAI)));
185
186SND_SOC_DAILINK_DEF(platform,
187 DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
188
189static struct snd_soc_dai_link cht_dailink[] = {
190 /* Front End DAI links */
191 [MERR_DPCM_AUDIO] = {
192 .name = "Audio Port",
193 .stream_name = "Audio",
194 .nonatomic = true,
195 .dynamic = 1,
196 .ops = &cht_aif1_ops,
197 SND_SOC_DAILINK_REG(media, dummy, platform),
198 },
199 [MERR_DPCM_DEEP_BUFFER] = {
200 .name = "Deep-Buffer Audio Port",
201 .stream_name = "Deep-Buffer Audio",
202 .nonatomic = true,
203 .dynamic = 1,
204 .playback_only = 1,
205 .ops = &cht_aif1_ops,
206 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
207 },
208 /* Back End DAI links */
209 {
210 /* SSP2 - Codec */
211 .name = "SSP2-Codec",
212 .id = 0,
213 .no_pcm = 1,
214 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
215 | SND_SOC_DAIFMT_CBC_CFC,
216 .init = cht_codec_init,
217 .be_hw_params_fixup = cht_codec_fixup,
218 .ops = &cht_be_ssp2_ops,
219 SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
220 },
221};
222
223/* use space before codec name to simplify card ID, and simplify driver name */
224#define SOF_CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
225#define SOF_DRIVER_NAME "SOF"
226
227#define CARD_NAME "chtnau8824"
228#define DRIVER_NAME NULL /* card name will be used for driver name */
229
230/* SoC card */
231static struct snd_soc_card snd_soc_card_cht = {
232 .owner = THIS_MODULE,
233 .dai_link = cht_dailink,
234 .num_links = ARRAY_SIZE(cht_dailink),
235 .dapm_widgets = cht_dapm_widgets,
236 .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
237 .dapm_routes = cht_audio_map,
238 .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
239 .controls = cht_mc_controls,
240 .num_controls = ARRAY_SIZE(cht_mc_controls),
241};
242
243static int snd_cht_mc_probe(struct platform_device *pdev)
244{
245 struct cht_mc_private *drv;
246 struct snd_soc_acpi_mach *mach;
247 const char *platform_name;
248 bool sof_parent;
249 int ret_val;
250
251 drv = devm_kzalloc(dev: &pdev->dev, size: sizeof(*drv), GFP_KERNEL);
252 if (!drv)
253 return -ENOMEM;
254 snd_soc_card_set_drvdata(card: &snd_soc_card_cht, data: drv);
255
256 /* override platform name, if required */
257 snd_soc_card_cht.dev = &pdev->dev;
258 mach = pdev->dev.platform_data;
259 platform_name = mach->mach_params.platform;
260
261 ret_val = snd_soc_fixup_dai_links_platform_name(card: &snd_soc_card_cht,
262 platform_name);
263 if (ret_val)
264 return ret_val;
265
266 sof_parent = snd_soc_acpi_sof_parent(dev: &pdev->dev);
267
268 /* set card and driver name */
269 if (sof_parent) {
270 snd_soc_card_cht.name = SOF_CARD_NAME;
271 snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
272 } else {
273 snd_soc_card_cht.name = CARD_NAME;
274 snd_soc_card_cht.driver_name = DRIVER_NAME;
275 }
276
277 snd_soc_card_cht.components = nau8824_components();
278
279 /* set pm ops */
280 if (sof_parent)
281 pdev->dev.driver->pm = &snd_soc_pm_ops;
282
283 /* register the soc card */
284 ret_val = devm_snd_soc_register_card(dev: &pdev->dev, card: &snd_soc_card_cht);
285 if (ret_val) {
286 dev_err(&pdev->dev,
287 "snd_soc_register_card failed %d\n", ret_val);
288 return ret_val;
289 }
290 platform_set_drvdata(pdev, data: &snd_soc_card_cht);
291
292 return ret_val;
293}
294
295static struct platform_driver snd_cht_mc_driver = {
296 .driver = {
297 .name = "cht-bsw-nau8824",
298 },
299 .probe = snd_cht_mc_probe,
300};
301
302module_platform_driver(snd_cht_mc_driver);
303
304MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
305MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
306MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
307MODULE_LICENSE("GPL v2");
308MODULE_ALIAS("platform:cht-bsw-nau8824");
309

source code of linux/sound/soc/intel/boards/cht_bsw_nau8824.c