1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2021-2022 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 <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_dapm_context *dapm = w->dapm;
31	struct snd_soc_card *card = dapm->card;
32	struct snd_soc_dai *codec_dai;
33	int ret;
34
35	codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
36	if (!codec_dai)
37		return -EINVAL;
38
39	/* Codec needs clock for Jack detection and button press */
40	ret = snd_soc_dai_set_sysclk(codec_dai, RT274_SCLK_S_PLL2, AVS_RT274_FREQ_OUT,
41				     SND_SOC_CLOCK_IN);
42	if (ret < 0) {
43		dev_err(codec_dai->dev, "set codec sysclk failed: %d\n", ret);
44		return ret;
45	}
46
47	if (SND_SOC_DAPM_EVENT_ON(event)) {
48		int ratio = 100;
49
50		snd_soc_dai_set_bclk_ratio(codec_dai, ratio);
51
52		ret = snd_soc_dai_set_pll(codec_dai, 0, RT274_PLL2_S_BCLK,
53					  AVS_RT274_BE_FIXUP_RATE * ratio, AVS_RT274_FREQ_OUT);
54		if (ret) {
55			dev_err(codec_dai->dev, "failed to enable PLL2: %d\n", ret);
56			return ret;
57		}
58	}
59
60	return 0;
61}
62
63static const struct snd_soc_dapm_widget card_widgets[] = {
64	SND_SOC_DAPM_HP("Headphone Jack", NULL),
65	SND_SOC_DAPM_MIC("Mic Jack", NULL),
66	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, avs_rt274_clock_control,
67			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
68};
69
70static const struct snd_soc_dapm_route card_base_routes[] = {
71	{"Headphone Jack", NULL, "HPO Pin"},
72	{"MIC", NULL, "Mic Jack"},
73
74	{"Headphone Jack", NULL, "Platform Clock"},
75	{"MIC", NULL, "Platform Clock"},
76};
77
78static struct snd_soc_jack_pin card_headset_pins[] = {
79	{
80		.pin = "Headphone Jack",
81		.mask = SND_JACK_HEADPHONE,
82	},
83	{
84		.pin = "Mic Jack",
85		.mask = SND_JACK_MICROPHONE,
86	},
87};
88
89static int avs_rt274_codec_init(struct snd_soc_pcm_runtime *runtime)
90{
91	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);
92	struct snd_soc_component *component = codec_dai->component;
93	struct snd_soc_jack_pin *pins;
94	struct snd_soc_jack *jack;
95	struct snd_soc_card *card = runtime->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(card->dev, card_headset_pins, sizeof(*pins) * num_pins, GFP_KERNEL);
102	if (!pins)
103		return -ENOMEM;
104
105	ret = snd_soc_card_jack_new_pins(card, "Headset", SND_JACK_HEADSET, jack, pins, num_pins);
106	if (ret)
107		return ret;
108
109	snd_soc_component_set_jack(component, jack, NULL);
110
111	/* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
112	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
113	if (ret < 0) {
114		dev_err(card->dev, "can't set codec pcm format %d\n", ret);
115		return ret;
116	}
117
118	card->dapm.idle_bias_off = true;
119
120	return 0;
121}
122
123static void avs_rt274_codec_exit(struct snd_soc_pcm_runtime *rtd)
124{
125	snd_soc_component_set_jack(snd_soc_rtd_to_codec(rtd, 0)->component, NULL, NULL);
126}
127
128static int avs_rt274_be_fixup(struct snd_soc_pcm_runtime *runtime, struct snd_pcm_hw_params *params)
129{
130	struct snd_interval *rate, *channels;
131	struct snd_mask *fmt;
132
133	rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
134	channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
135	fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
136
137	/* The ADSP will convert the FE rate to 48k, stereo */
138	rate->min = rate->max = AVS_RT274_BE_FIXUP_RATE;
139	channels->min = channels->max = 2;
140
141	/* set SSPN to 24 bit */
142	snd_mask_none(fmt);
143	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
144
145	return 0;
146}
147
148static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
149			       int tdm_slot, struct snd_soc_dai_link **dai_link)
150{
151	struct snd_soc_dai_link_component *platform;
152	struct snd_soc_dai_link *dl;
153
154	dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
155	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
156	if (!dl || !platform)
157		return -ENOMEM;
158
159	platform->name = platform_name;
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	dl->num_cpus = 1;
176	dl->num_codecs = 1;
177	dl->platforms = platform;
178	dl->num_platforms = 1;
179	dl->id = 0;
180	dl->dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
181	dl->init = avs_rt274_codec_init;
182	dl->exit = avs_rt274_codec_exit;
183	dl->be_hw_params_fixup = avs_rt274_be_fixup;
184	dl->nonatomic = 1;
185	dl->no_pcm = 1;
186	dl->dpcm_capture = 1;
187	dl->dpcm_playback = 1;
188
189	*dai_link = dl;
190
191	return 0;
192}
193
194static int avs_card_suspend_pre(struct snd_soc_card *card)
195{
196	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
197
198	return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
199}
200
201static int avs_card_resume_post(struct snd_soc_card *card)
202{
203	struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, RT274_CODEC_DAI);
204	struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
205
206	return snd_soc_component_set_jack(codec_dai->component, jack, NULL);
207}
208
209static int avs_rt274_probe(struct platform_device *pdev)
210{
211	struct snd_soc_dai_link *dai_link;
212	struct snd_soc_acpi_mach *mach;
213	struct snd_soc_card *card;
214	struct snd_soc_jack *jack;
215	struct device *dev = &pdev->dev;
216	const char *pname;
217	int ssp_port, tdm_slot, ret;
218
219	mach = dev_get_platdata(dev);
220	pname = mach->mach_params.platform;
221
222	ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
223	if (ret)
224		return ret;
225
226	ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link);
227	if (ret) {
228		dev_err(dev, "Failed to create dai link: %d", ret);
229		return ret;
230	}
231
232	jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
233	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
234	if (!jack || !card)
235		return -ENOMEM;
236
237	card->name = "avs_rt274";
238	card->dev = dev;
239	card->owner = THIS_MODULE;
240	card->suspend_pre = avs_card_suspend_pre;
241	card->resume_post = avs_card_resume_post;
242	card->dai_link = dai_link;
243	card->num_links = 1;
244	card->controls = card_controls;
245	card->num_controls = ARRAY_SIZE(card_controls);
246	card->dapm_widgets = card_widgets;
247	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
248	card->dapm_routes = card_base_routes;
249	card->num_dapm_routes = ARRAY_SIZE(card_base_routes);
250	card->fully_routed = true;
251	snd_soc_card_set_drvdata(card, jack);
252
253	ret = snd_soc_fixup_dai_links_platform_name(card, pname);
254	if (ret)
255		return ret;
256
257	return devm_snd_soc_register_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");
281