1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2022 Intel Corporation. All rights reserved.
4//
5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7//
8
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <sound/pcm_params.h>
12#include <sound/soc.h>
13#include <sound/soc-acpi.h>
14#include <sound/soc-dapm.h>
15#include "../utils.h"
16
17#define MAX98927_DEV0_NAME	"i2c-MX98927:00"
18#define MAX98927_DEV1_NAME	"i2c-MX98927:01"
19#define MAX98927_CODEC_NAME	"max98927-aif1"
20
21static struct snd_soc_codec_conf card_codec_conf[] = {
22	{
23		.dlc = COMP_CODEC_CONF(MAX98927_DEV0_NAME),
24		.name_prefix = "Right",
25	},
26	{
27		.dlc = COMP_CODEC_CONF(MAX98927_DEV1_NAME),
28		.name_prefix = "Left",
29	},
30};
31
32static const struct snd_kcontrol_new card_controls[] = {
33	SOC_DAPM_PIN_SWITCH("Left Spk"),
34	SOC_DAPM_PIN_SWITCH("Right Spk"),
35};
36
37static const struct snd_soc_dapm_widget card_widgets[] = {
38	SND_SOC_DAPM_SPK("Left Spk", NULL),
39	SND_SOC_DAPM_SPK("Right Spk", NULL),
40};
41
42static const struct snd_soc_dapm_route card_base_routes[] = {
43	{ "Left Spk", NULL, "Left BE_OUT" },
44	{ "Right Spk", NULL, "Right BE_OUT" },
45};
46
47static int
48avs_max98927_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params)
49{
50	struct snd_interval *rate, *channels;
51	struct snd_mask *fmt;
52
53	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
54	channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
55	fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
56
57	/* The ADSP will convert the FE rate to 48k, stereo */
58	rate->min = rate->max = 48000;
59	channels->min = channels->max = 2;
60
61	/* set SSP0 to 16 bit */
62	snd_mask_none(fmt);
63	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);
64	return 0;
65}
66
67static int avs_max98927_hw_params(struct snd_pcm_substream *substream,
68				  struct snd_pcm_hw_params *params)
69{
70	struct snd_soc_pcm_runtime *runtime = snd_soc_substream_to_rtd(substream);
71	struct snd_soc_dai *codec_dai;
72	int ret = 0;
73	int i;
74
75	for_each_rtd_codec_dais(runtime, i, codec_dai) {
76		if (!strcmp(codec_dai->component->name, MAX98927_DEV0_NAME))
77			ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16);
78		else if (!strcmp(codec_dai->component->name, MAX98927_DEV1_NAME))
79			ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16);
80
81		if (ret < 0) {
82			dev_err(runtime->dev, "hw_params for %s failed: %d\n",
83				codec_dai->component->name, ret);
84			return ret;
85		}
86	}
87
88	return 0;
89}
90
91static const struct snd_soc_ops avs_max98927_ops = {
92	.hw_params = avs_max98927_hw_params,
93};
94
95static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
96			       int tdm_slot, struct snd_soc_dai_link **dai_link)
97{
98	struct snd_soc_dai_link_component *platform;
99	struct snd_soc_dai_link *dl;
100
101	dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
102	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
103	if (!dl || !platform)
104		return -ENOMEM;
105
106	platform->name = platform_name;
107
108	dl->name = devm_kasprintf(dev, GFP_KERNEL,
109				  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
110	dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
111	dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL);
112	if (!dl->name || !dl->cpus || !dl->codecs)
113		return -ENOMEM;
114
115	dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
116					    AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
117	dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV0_NAME);
118	dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);
119	dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV1_NAME);
120	dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);
121	if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
122	    !dl->codecs[1].name || !dl->codecs[1].dai_name)
123		return -ENOMEM;
124
125	dl->num_cpus = 1;
126	dl->num_codecs = 2;
127	dl->platforms = platform;
128	dl->num_platforms = 1;
129	dl->id = 0;
130	dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
131	dl->be_hw_params_fixup = avs_max98927_be_fixup;
132	dl->nonatomic = 1;
133	dl->no_pcm = 1;
134	dl->dpcm_capture = 1;
135	dl->dpcm_playback = 1;
136	dl->ignore_pmdown_time = 1;
137	dl->ops = &avs_max98927_ops;
138
139	*dai_link = dl;
140
141	return 0;
142}
143
144static int avs_max98927_probe(struct platform_device *pdev)
145{
146	struct snd_soc_dai_link *dai_link;
147	struct snd_soc_acpi_mach *mach;
148	struct snd_soc_card *card;
149	struct device *dev = &pdev->dev;
150	const char *pname;
151	int ssp_port, tdm_slot, ret;
152
153	mach = dev_get_platdata(dev);
154	pname = mach->mach_params.platform;
155
156	ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
157	if (ret)
158		return ret;
159
160	ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);
161	if (ret) {
162		dev_err(dev, "Failed to create dai link: %d", ret);
163		return ret;
164	}
165
166	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
167	if (!card)
168		return -ENOMEM;
169
170	card->name = "avs_max98927";
171	card->dev = dev;
172	card->owner = THIS_MODULE;
173	card->dai_link = dai_link;
174	card->num_links = 1;
175	card->codec_conf = card_codec_conf;
176	card->num_configs = ARRAY_SIZE(card_codec_conf);
177	card->controls = card_controls;
178	card->num_controls = ARRAY_SIZE(card_controls);
179	card->dapm_widgets = card_widgets;
180	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
181	card->dapm_routes = card_base_routes;
182	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
183	card->fully_routed = true;
184
185	ret = snd_soc_fixup_dai_links_platform_name(card, pname);
186	if (ret)
187		return ret;
188
189	return devm_snd_soc_register_card(dev, card);
190}
191
192static const struct platform_device_id avs_max98927_driver_ids[] = {
193	{
194		.name = "avs_max98927",
195	},
196	{},
197};
198MODULE_DEVICE_TABLE(platform, avs_max98927_driver_ids);
199
200static struct platform_driver avs_max98927_driver = {
201	.probe = avs_max98927_probe,
202	.driver = {
203		.name = "avs_max98927",
204		.pm = &snd_soc_pm_ops,
205	},
206	.id_table = avs_max98927_driver_ids,
207};
208
209module_platform_driver(avs_max98927_driver)
210
211MODULE_DESCRIPTION("Intel max98927 machine driver");
212MODULE_LICENSE("GPL");
213