1// SPDX-License-Identifier: GPL-2.0+
2
3#include "../codecs/wm8994.h"
4#include <sound/pcm_params.h>
5#include <sound/soc.h>
6#include <linux/module.h>
7#include <linux/of.h>
8
9 /*
10  * Default CFG switch settings to use this driver:
11  *	SMDKV310: CFG5-1000, CFG7-111111
12  */
13
14 /*
15  * Configure audio route as :-
16  * $ amixer sset 'DAC1' on,on
17  * $ amixer sset 'Right Headphone Mux' 'DAC'
18  * $ amixer sset 'Left Headphone Mux' 'DAC'
19  * $ amixer sset 'DAC1R Mixer AIF1.1' on
20  * $ amixer sset 'DAC1L Mixer AIF1.1' on
21  * $ amixer sset 'IN2L' on
22  * $ amixer sset 'IN2L PGA IN2LN' on
23  * $ amixer sset 'MIXINL IN2L' on
24  * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
25  * $ amixer sset 'IN2R' on
26  * $ amixer sset 'IN2R PGA IN2RN' on
27  * $ amixer sset 'MIXINR IN2R' on
28  * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
29  */
30
31/* SMDK has a 16.934MHZ crystal attached to WM8994 */
32#define SMDK_WM8994_FREQ 16934000
33
34static int smdk_hw_params(struct snd_pcm_substream *substream,
35	struct snd_pcm_hw_params *params)
36{
37	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
38	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
39	unsigned int pll_out;
40	int ret;
41
42	/* AIF1CLK should be >=3MHz for optimal performance */
43	if (params_width(params) == 24)
44		pll_out = params_rate(params) * 384;
45	else if (params_rate(params) == 8000 || params_rate(params) == 11025)
46		pll_out = params_rate(params) * 512;
47	else
48		pll_out = params_rate(params) * 256;
49
50	ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
51					SMDK_WM8994_FREQ, pll_out);
52	if (ret < 0)
53		return ret;
54
55	ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
56					pll_out, SND_SOC_CLOCK_IN);
57	if (ret < 0)
58		return ret;
59
60	return 0;
61}
62
63/*
64 * SMDK WM8994 DAI operations.
65 */
66static const struct snd_soc_ops smdk_ops = {
67	.hw_params = smdk_hw_params,
68};
69
70static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
71{
72	struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
73
74	/* Other pins NC */
75	snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
76	snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
77	snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
78	snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
79	snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
80	snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
81	snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
82	snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
83	snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
84	snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
85	snd_soc_dapm_nc_pin(dapm, "IN1LP");
86	snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
87	snd_soc_dapm_nc_pin(dapm, "IN1RP");
88	snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
89
90	return 0;
91}
92
93SND_SOC_DAILINK_DEFS(aif1,
94	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
95	DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
96	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
97
98SND_SOC_DAILINK_DEFS(fifo_tx,
99	DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
100	DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
101	DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
102
103static struct snd_soc_dai_link smdk_dai[] = {
104	{ /* Primary DAI i/f */
105		.name = "WM8994 AIF1",
106		.stream_name = "Pri_Dai",
107		.init = smdk_wm8994_init_paiftx,
108		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
109			SND_SOC_DAIFMT_CBM_CFM,
110		.ops = &smdk_ops,
111		SND_SOC_DAILINK_REG(aif1),
112	}, { /* Sec_Fifo Playback i/f */
113		.name = "Sec_FIFO TX",
114		.stream_name = "Sec_Dai",
115		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
116			SND_SOC_DAIFMT_CBM_CFM,
117		.ops = &smdk_ops,
118		SND_SOC_DAILINK_REG(fifo_tx),
119	},
120};
121
122static struct snd_soc_card smdk = {
123	.name = "SMDK-I2S",
124	.owner = THIS_MODULE,
125	.dai_link = smdk_dai,
126	.num_links = ARRAY_SIZE(smdk_dai),
127};
128
129static const struct of_device_id samsung_wm8994_of_match[] = {
130	{ .compatible = "samsung,smdk-wm8994" },
131	{},
132};
133MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
134
135static int smdk_audio_probe(struct platform_device *pdev)
136{
137	int ret;
138	struct device_node *np = pdev->dev.of_node;
139	struct snd_soc_card *card = &smdk;
140
141	card->dev = &pdev->dev;
142
143	if (np) {
144		smdk_dai[0].cpus->dai_name = NULL;
145		smdk_dai[0].cpus->of_node = of_parse_phandle(np,
146				"samsung,i2s-controller", 0);
147		if (!smdk_dai[0].cpus->of_node) {
148			dev_err(&pdev->dev,
149			   "Property 'samsung,i2s-controller' missing or invalid\n");
150			ret = -EINVAL;
151			return ret;
152		}
153
154		smdk_dai[0].platforms->name = NULL;
155		smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
156	}
157
158	ret = devm_snd_soc_register_card(&pdev->dev, card);
159
160	if (ret)
161		dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
162
163	return ret;
164}
165
166static struct platform_driver smdk_audio_driver = {
167	.driver		= {
168		.name	= "smdk-audio-wm8994",
169		.of_match_table = samsung_wm8994_of_match,
170		.pm	= &snd_soc_pm_ops,
171	},
172	.probe		= smdk_audio_probe,
173};
174
175module_platform_driver(smdk_audio_driver);
176
177MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
178MODULE_LICENSE("GPL");
179MODULE_ALIAS("platform:smdk-audio-wm8994");
180