max98927.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2//
  3// Copyright(c) 2022 Intel Corporation
  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, int ssp_port, int tdm_slot,
 96			       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	dl->name = devm_kasprintf(dev, GFP_KERNEL,
107				  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
108	dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
109	dl->codecs = devm_kcalloc(dev, 2, sizeof(*dl->codecs), GFP_KERNEL);
110	if (!dl->name || !dl->cpus || !dl->codecs)
111		return -ENOMEM;
112
113	dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
114					    AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
115	dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV0_NAME);
116	dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);
117	dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV1_NAME);
118	dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME);
119	if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name ||
120	    !dl->codecs[1].name || !dl->codecs[1].dai_name)
121		return -ENOMEM;
122
123	platform->name = dev_name(dev);
124	dl->num_cpus = 1;
125	dl->num_codecs = 2;
126	dl->platforms = platform;
127	dl->num_platforms = 1;
128	dl->id = 0;
129	dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
130	dl->be_hw_params_fixup = avs_max98927_be_fixup;
131	dl->nonatomic = 1;
132	dl->no_pcm = 1;
133	dl->ignore_pmdown_time = 1;
134	dl->ops = &avs_max98927_ops;
135
136	*dai_link = dl;
137
138	return 0;
139}
140
141static int avs_max98927_probe(struct platform_device *pdev)
142{
143	struct snd_soc_dai_link *dai_link;
144	struct snd_soc_acpi_mach *mach;
145	struct avs_mach_pdata *pdata;
146	struct snd_soc_card *card;
147	struct device *dev = &pdev->dev;
148	int ssp_port, tdm_slot, ret;
149
150	mach = dev_get_platdata(dev);
151	pdata = mach->pdata;
152
153	ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
154	if (ret)
155		return ret;
156
157	ret = avs_create_dai_link(dev, ssp_port, tdm_slot, &dai_link);
158	if (ret) {
159		dev_err(dev, "Failed to create dai link: %d", ret);
160		return ret;
161	}
162
163	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
164	if (!card)
165		return -ENOMEM;
166
167	if (pdata->obsolete_card_names) {
168		card->name = "avs_max98927";
169	} else {
170		card->driver_name = "avs_max98927";
171		card->long_name = card->name = "AVS I2S MAX98927";
172	}
173	card->dev = dev;
174	card->owner = THIS_MODULE;
175	card->dai_link = dai_link;
176	card->num_links = 1;
177	card->codec_conf = card_codec_conf;
178	card->num_configs = ARRAY_SIZE(card_codec_conf);
179	card->controls = card_controls;
180	card->num_controls = ARRAY_SIZE(card_controls);
181	card->dapm_widgets = card_widgets;
182	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
183	card->dapm_routes = card_base_routes;
184	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
185	card->fully_routed = true;
186
187	return devm_snd_soc_register_deferrable_card(dev, card);
188}
189
190static const struct platform_device_id avs_max98927_driver_ids[] = {
191	{
192		.name = "avs_max98927",
193	},
194	{},
195};
196MODULE_DEVICE_TABLE(platform, avs_max98927_driver_ids);
197
198static struct platform_driver avs_max98927_driver = {
199	.probe = avs_max98927_probe,
200	.driver = {
201		.name = "avs_max98927",
202		.pm = &snd_soc_pm_ops,
203	},
204	.id_table = avs_max98927_driver_ids,
205};
206
207module_platform_driver(avs_max98927_driver)
208
209MODULE_DESCRIPTION("Intel max98927 machine driver");
210MODULE_LICENSE("GPL");