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(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
99static 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
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(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
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(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
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		.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 */
215static 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
229static char codec_name[SND_ACPI_I2C_ID_LEN];
230
231static 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
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