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(codec_dai, NAU8824_CLK_FLL_FS, 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(codec_dai, 0, 0, params_rate(params),
86		params_rate(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(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(runtime->card, "Headset", jack_type,
112		jack, 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, SND_JACK_BTN_0, KEY_PLAYPAUSE);
119	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
120	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
121	snd_jack_set_key(jack->jack, 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(fmt);
145	params_set_format(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), 0xf, 0x1, 4, 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(substream->runtime,
160		SNDRV_PCM_HW_PARAM_RATE, 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		.dpcm_playback = 1,
197		.dpcm_capture = 1,
198		.ops = &cht_aif1_ops,
199		SND_SOC_DAILINK_REG(media, dummy, platform),
200	},
201	[MERR_DPCM_DEEP_BUFFER] = {
202		.name = "Deep-Buffer Audio Port",
203		.stream_name = "Deep-Buffer Audio",
204		.nonatomic = true,
205		.dynamic = 1,
206		.dpcm_playback = 1,
207		.ops = &cht_aif1_ops,
208		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
209	},
210	/* Back End DAI links */
211	{
212		/* SSP2 - Codec */
213		.name = "SSP2-Codec",
214		.id = 0,
215		.no_pcm = 1,
216		.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
217			| SND_SOC_DAIFMT_CBC_CFC,
218		.init = cht_codec_init,
219		.be_hw_params_fixup = cht_codec_fixup,
220		.dpcm_playback = 1,
221		.dpcm_capture = 1,
222		.ops = &cht_be_ssp2_ops,
223		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
224	},
225};
226
227/* use space before codec name to simplify card ID, and simplify driver name */
228#define SOF_CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
229#define SOF_DRIVER_NAME "SOF"
230
231#define CARD_NAME "chtnau8824"
232#define DRIVER_NAME NULL /* card name will be used for driver name */
233
234/* SoC card */
235static struct snd_soc_card snd_soc_card_cht = {
236	.owner = THIS_MODULE,
237	.dai_link = cht_dailink,
238	.num_links = ARRAY_SIZE(cht_dailink),
239	.dapm_widgets = cht_dapm_widgets,
240	.num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
241	.dapm_routes = cht_audio_map,
242	.num_dapm_routes = ARRAY_SIZE(cht_audio_map),
243	.controls = cht_mc_controls,
244	.num_controls = ARRAY_SIZE(cht_mc_controls),
245};
246
247static int snd_cht_mc_probe(struct platform_device *pdev)
248{
249	struct cht_mc_private *drv;
250	struct snd_soc_acpi_mach *mach;
251	const char *platform_name;
252	bool sof_parent;
253	int ret_val;
254
255	drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
256	if (!drv)
257		return -ENOMEM;
258	snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
259
260	/* override platform name, if required */
261	snd_soc_card_cht.dev = &pdev->dev;
262	mach = pdev->dev.platform_data;
263	platform_name = mach->mach_params.platform;
264
265	ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
266							platform_name);
267	if (ret_val)
268		return ret_val;
269
270	sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
271
272	/* set card and driver name */
273	if (sof_parent) {
274		snd_soc_card_cht.name = SOF_CARD_NAME;
275		snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
276	} else {
277		snd_soc_card_cht.name = CARD_NAME;
278		snd_soc_card_cht.driver_name = DRIVER_NAME;
279	}
280
281	snd_soc_card_cht.components = nau8824_components();
282
283	/* set pm ops */
284	if (sof_parent)
285		pdev->dev.driver->pm = &snd_soc_pm_ops;
286
287	/* register the soc card */
288	ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
289	if (ret_val) {
290		dev_err(&pdev->dev,
291			"snd_soc_register_card failed %d\n", ret_val);
292		return ret_val;
293	}
294	platform_set_drvdata(pdev, &snd_soc_card_cht);
295
296	return ret_val;
297}
298
299static struct platform_driver snd_cht_mc_driver = {
300	.driver = {
301		.name = "cht-bsw-nau8824",
302	},
303	.probe = snd_cht_mc_probe,
304};
305
306module_platform_driver(snd_cht_mc_driver);
307
308MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
309MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
310MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
311MODULE_LICENSE("GPL v2");
312MODULE_ALIAS("platform:cht-bsw-nau8824");
313