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
34 static 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 */
66 static const struct snd_soc_ops smdk_ops = {
67 .hw_params = smdk_hw_params,
68 };
69
70 static 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
93 SND_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
98 SND_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
103 static 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
122 static 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
129 static const struct of_device_id samsung_wm8994_of_match[] = {
130 { .compatible = "samsung,smdk-wm8994" },
131 {},
132 };
133 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
134
135 static 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
166 static 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
175 module_platform_driver(smdk_audio_driver);
176
177 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
178 MODULE_LICENSE("GPL");
179 MODULE_ALIAS("platform:smdk-audio-wm8994");
180
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.