rt274.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2//
  3// Copyright(c) 2021-2022 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 <sound/jack.h>
 11#include <sound/pcm.h>
 12#include <sound/pcm_params.h>
 13#include <sound/soc.h>
 14#include <sound/soc-acpi.h>
 15#include "../../../codecs/rt274.h"
 16#include "../utils.h"
 17
 18#define AVS_RT274_FREQ_OUT	24000000
 19#define AVS_RT274_BE_FIXUP_RATE	48000
 20#define RT274_CODEC_DAI		"rt274-aif1"
 21
 22static const struct snd_kcontrol_new card_controls[] = {
 23	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 24	SOC_DAPM_PIN_SWITCH("Mic Jack"),
 25};
 26
 27static int
 28avs_rt274_clock_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *control, int event)
 29{
 30	struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm);
 31	struct snd_soc_dai *codec_dai;
 32	int ret;
 33
 34	codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
 35	if (!codec_dai)
 36		return -EINVAL;
 37
 38	/* Codec needs clock for Jack detection and button press */
 39	ret = snd_soc_dai_set_sysclk(codec_dai, RT274_SCLK_S_PLL2, AVS_RT274_FREQ_OUT,
 40				     SND_SOC_CLOCK_IN);
 41	if (ret < 0) {
 42		dev_err(codec_dai->dev, "set codec sysclk failed: %d\n", ret);
 43		return ret;
 44	}
 45
 46	if (SND_SOC_DAPM_EVENT_ON(event)) {
 47		int ratio = 100;
 48
 49		snd_soc_dai_set_bclk_ratio(codec_dai, ratio);
 50
 51		ret = snd_soc_dai_set_pll(codec_dai, 0, RT274_PLL2_S_BCLK,
 52					  AVS_RT274_BE_FIXUP_RATE * ratio, AVS_RT274_FREQ_OUT);
 53		if (ret) {
 54			dev_err(codec_dai->dev, "failed to enable PLL2: %d\n", ret);
 55			return ret;
 56		}
 57	}
 58
 59	return 0;
 60}
 61
 62static const struct snd_soc_dapm_widget card_widgets[] = {
 63	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 64	SND_SOC_DAPM_MIC("Mic Jack", NULL),
 65	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_rt274_clock_control,
 66			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 67};
 68
 69static const struct snd_soc_dapm_route card_base_routes[] = {
 70	{"Headphone Jack", NULL, "HPO Pin"},
 71	{"MIC", NULL, "Mic Jack"},
 72
 73	{"Headphone Jack", NULL, "Platform Clock"},
 74	{"MIC", NULL, "Platform Clock"},
 75};
 76
 77static const struct snd_soc_jack_pin card_headset_pins[] = {
 78	{
 79		.pin = "Headphone Jack",
 80		.mask = SND_JACK_HEADPHONE,
 81	},
 82	{
 83		.pin = "Mic Jack",
 84		.mask = SND_JACK_MICROPHONE,
 85	},
 86};
 87
 88static int avs_rt274_codec_init(struct snd_soc_pcm_runtime *runtime)
 89{
 90	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);
 91	struct snd_soc_component *component = codec_dai->component;
 92	struct snd_soc_jack_pin *pins;
 93	struct snd_soc_jack *jack;
 94	struct snd_soc_card *card = runtime->card;
 95	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
 96	int num_pins, ret;
 97
 98	jack = snd_soc_card_get_drvdata(card);
 99	num_pins = ARRAY_SIZE(card_headset_pins);
100
101	pins = devm_kmemdup_array(card->dev, card_headset_pins, num_pins,
102				  sizeof(card_headset_pins[0]), GFP_KERNEL);
103	if (!pins)
104		return -ENOMEM;
105
106	ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET, jack, pins,
107					 num_pins);
108	if (ret)
109		return ret;
110
111	snd_soc_component_set_jack(component, jack, NULL);
112
113	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
114	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
115	if (ret < 0) {
116		dev_err(card->dev, "can't set codec pcm format %d\n", ret);
117		return ret;
118	}
119
120	snd_soc_dapm_set_idle_bias(dapm, false);
121
122	return 0;
123}
124
125static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd)
126{
127	snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
128}
129
130static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
131{
132	struct snd_interval *rate, *channels;
133	struct snd_mask *fmt;
134
135	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
136	channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
137	fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
138
139	/* The ADSP will convert the FE rate to 48k, stereo */
140	rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE;
141	channels->min = channels->max = 2;
142
143	/* set SSPN to 24 bit */
144	snd_mask_none(fmt);
145	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
146
147	return 0;
148}
149
150static int avs_create_dai_link(struct device *dev, int ssp_port, int tdm_slot,
151			       struct snd_soc_dai_link **dai_link)
152{
153	struct snd_soc_dai_link_component *platform;
154	struct snd_soc_dai_link *dl;
155
156	dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
157	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
158	if (!dl || !platform)
159		return -ENOMEM;
160
161	dl->name = devm_kasprintf(dev, GFP_KERNEL,
162				  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
163	dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
164	dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
165	if (!dl->name || !dl->cpus || !dl->codecs)
166		return -ENOMEM;
167
168	dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
169					    AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
170	dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-INT34C2:00");
171	dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, RT274_CODEC_DAI);
172	if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
173		return -ENOMEM;
174
175	platform->name = dev_name(dev);
176	dl->num_cpus = 1;
177	dl->num_codecs = 1;
178	dl->platforms = platform;
179	dl->num_platforms = 1;
180	dl->id = 0;
181	dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
182	dl->init = avs_rt274_codec_init;
183	dl->exit = avs_rt274_codec_exit;
184	dl->be_hw_params_fixup = avs_rt274_be_fixup;
185	dl->nonatomic = 1;
186	dl->no_pcm = 1;
187
188	*dai_link = dl;
189
190	return 0;
191}
192
193static int avs_card_suspend_pre(struct snd_soc_card *card)
194{
195	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
196
197	return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
198}
199
200static int avs_card_resume_post(struct snd_soc_card *card)
201{
202	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
203	struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
204
205	return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
206}
207
208static int avs_rt274_probe(struct platform_device *pdev)
209{
210	struct snd_soc_dai_link *dai_link;
211	struct snd_soc_acpi_mach *mach;
212	struct avs_mach_pdata *pdata;
213	struct snd_soc_card *card;
214	struct snd_soc_jack *jack;
215	struct device *dev = &pdev->dev;
216	int ssp_port, tdm_slot, ret;
217
218	mach = dev_get_platdata(dev);
219	pdata = mach->pdata;
220
221	ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
222	if (ret)
223		return ret;
224
225	ret = avs_create_dai_link(dev, ssp_port, tdm_slot, &dai_link);
226	if (ret) {
227		dev_err(dev, "Failed to create dai link: %d", ret);
228		return ret;
229	}
230
231	jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
232	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
233	if (!jack || !card)
234		return -ENOMEM;
235
236	if (pdata->obsolete_card_names) {
237		card->name = "avs_rt274";
238	} else {
239		card->driver_name = "avs_rt274";
240		card->long_name = card->name = "AVS I2S ALC274";
241	}
242	card->dev = dev;
243	card->owner = THIS_MODULE;
244	card->suspend_pre = avs_card_suspend_pre;
245	card->resume_post = avs_card_resume_post;
246	card->dai_link = dai_link;
247	card->num_links = 1;
248	card->controls = card_controls;
249	card->num_controls = ARRAY_SIZE(card_controls);
250	card->dapm_widgets = card_widgets;
251	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
252	card->dapm_routes = card_base_routes;
253	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
254	card->fully_routed = true;
255	snd_soc_card_set_drvdata(card, jack);
256
257	return devm_snd_soc_register_deferrable_card(dev, card);
258}
259
260static const struct platform_device_id avs_rt274_driver_ids[] = {
261	{
262		.name = "avs_rt274",
263	},
264	{},
265};
266MODULE_DEVICE_TABLE(platform, avs_rt274_driver_ids);
267
268static struct platform_driver avs_rt274_driver = {
269	.probe = avs_rt274_probe,
270	.driver = {
271		.name = "avs_rt274",
272		.pm = &snd_soc_pm_ops,
273	},
274	.id_table = avs_rt274_driver_ids,
275};
276
277module_platform_driver(avs_rt274_driver);
278
279MODULE_DESCRIPTION("Intel rt274 machine driver");
280MODULE_LICENSE("GPL");