1// SPDX-License-Identifier: GPL-2.0
2/*
3 * mt2701-wm8960.c  --  MT2701 WM8960 ALSA SoC machine driver
4 *
5 * Copyright (c) 2017 MediaTek Inc.
6 * Author: Ryder Lee <ryder.lee@mediatek.com>
7 */
8
9#include <linux/module.h>
10#include <sound/soc.h>
11
12#include "mt2701-afe-common.h"
13
14static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = {
15	SND_SOC_DAPM_HP("Headphone", NULL),
16	SND_SOC_DAPM_MIC("AMIC", NULL),
17};
18
19static const struct snd_kcontrol_new mt2701_wm8960_controls[] = {
20	SOC_DAPM_PIN_SWITCH("Headphone"),
21	SOC_DAPM_PIN_SWITCH("AMIC"),
22};
23
24static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream,
25					  struct snd_pcm_hw_params *params)
26{
27	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
28	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
29	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
30	unsigned int mclk_rate;
31	unsigned int rate = params_rate(params);
32	unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
33	unsigned int div_bck_over_lrck = 64;
34
35	mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
36
37	snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
38	snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
39
40	return 0;
41}
42
43static struct snd_soc_ops mt2701_wm8960_be_ops = {
44	.hw_params = mt2701_wm8960_be_ops_hw_params
45};
46
47SND_SOC_DAILINK_DEFS(playback,
48	DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")),
49	DAILINK_COMP_ARRAY(COMP_DUMMY()),
50	DAILINK_COMP_ARRAY(COMP_EMPTY()));
51
52SND_SOC_DAILINK_DEFS(capture,
53	DAILINK_COMP_ARRAY(COMP_CPU("PCM0")),
54	DAILINK_COMP_ARRAY(COMP_DUMMY()),
55	DAILINK_COMP_ARRAY(COMP_EMPTY()));
56
57SND_SOC_DAILINK_DEFS(codec,
58	DAILINK_COMP_ARRAY(COMP_CPU("I2S0")),
59	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")),
60	DAILINK_COMP_ARRAY(COMP_EMPTY()));
61
62static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = {
63	/* FE */
64	{
65		.name = "wm8960-playback",
66		.stream_name = "wm8960-playback",
67		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
68			    SND_SOC_DPCM_TRIGGER_POST},
69		.dynamic = 1,
70		.dpcm_playback = 1,
71		SND_SOC_DAILINK_REG(playback),
72	},
73	{
74		.name = "wm8960-capture",
75		.stream_name = "wm8960-capture",
76		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
77			    SND_SOC_DPCM_TRIGGER_POST},
78		.dynamic = 1,
79		.dpcm_capture = 1,
80		SND_SOC_DAILINK_REG(capture),
81	},
82	/* BE */
83	{
84		.name = "wm8960-codec",
85		.no_pcm = 1,
86		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
87			| SND_SOC_DAIFMT_GATED,
88		.ops = &mt2701_wm8960_be_ops,
89		.dpcm_playback = 1,
90		.dpcm_capture = 1,
91		SND_SOC_DAILINK_REG(codec),
92	},
93};
94
95static struct snd_soc_card mt2701_wm8960_card = {
96	.name = "mt2701-wm8960",
97	.owner = THIS_MODULE,
98	.dai_link = mt2701_wm8960_dai_links,
99	.num_links = ARRAY_SIZE(mt2701_wm8960_dai_links),
100	.controls = mt2701_wm8960_controls,
101	.num_controls = ARRAY_SIZE(mt2701_wm8960_controls),
102	.dapm_widgets = mt2701_wm8960_widgets,
103	.num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets),
104};
105
106static int mt2701_wm8960_machine_probe(struct platform_device *pdev)
107{
108	struct snd_soc_card *card = &mt2701_wm8960_card;
109	struct device_node *platform_node, *codec_node;
110	struct snd_soc_dai_link *dai_link;
111	int ret, i;
112
113	platform_node = of_parse_phandle(pdev->dev.of_node,
114					 "mediatek,platform", 0);
115	if (!platform_node) {
116		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
117		return -EINVAL;
118	}
119	for_each_card_prelinks(card, i, dai_link) {
120		if (dai_link->platforms->name)
121			continue;
122		dai_link->platforms->of_node = platform_node;
123	}
124
125	card->dev = &pdev->dev;
126
127	codec_node = of_parse_phandle(pdev->dev.of_node,
128				      "mediatek,audio-codec", 0);
129	if (!codec_node) {
130		dev_err(&pdev->dev,
131			"Property 'audio-codec' missing or invalid\n");
132		ret = -EINVAL;
133		goto put_platform_node;
134	}
135	for_each_card_prelinks(card, i, dai_link) {
136		if (dai_link->codecs->name)
137			continue;
138		dai_link->codecs->of_node = codec_node;
139	}
140
141	ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
142	if (ret) {
143		dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
144		goto put_codec_node;
145	}
146
147	ret = devm_snd_soc_register_card(&pdev->dev, card);
148	if (ret)
149		dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
150			__func__, ret);
151
152put_codec_node:
153	of_node_put(codec_node);
154put_platform_node:
155	of_node_put(platform_node);
156	return ret;
157}
158
159#ifdef CONFIG_OF
160static const struct of_device_id mt2701_wm8960_machine_dt_match[] = {
161	{.compatible = "mediatek,mt2701-wm8960-machine",},
162	{}
163};
164#endif
165
166static struct platform_driver mt2701_wm8960_machine = {
167	.driver = {
168		.name = "mt2701-wm8960",
169#ifdef CONFIG_OF
170		.of_match_table = mt2701_wm8960_machine_dt_match,
171#endif
172	},
173	.probe = mt2701_wm8960_machine_probe,
174};
175
176module_platform_driver(mt2701_wm8960_machine);
177
178/* Module information */
179MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver");
180MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>");
181MODULE_LICENSE("GPL v2");
182MODULE_ALIAS("mt2701 wm8960 soc card");
183
184