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(p: params) == 24) |
44 | pll_out = params_rate(p: params) * 384; |
45 | else if (params_rate(p: params) == 8000 || params_rate(p: params) == 11025) |
46 | pll_out = params_rate(p: params) * 512; |
47 | else |
48 | pll_out = params_rate(p: params) * 256; |
49 | |
50 | ret = snd_soc_dai_set_pll(dai: codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, |
51 | SMDK_WM8994_FREQ, freq_out: pll_out); |
52 | if (ret < 0) |
53 | return ret; |
54 | |
55 | ret = snd_soc_dai_set_sysclk(dai: codec_dai, WM8994_SYSCLK_FLL1, |
56 | freq: 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, pin: "HPOUT2P" ); |
76 | snd_soc_dapm_nc_pin(dapm, pin: "HPOUT2N" ); |
77 | snd_soc_dapm_nc_pin(dapm, pin: "SPKOUTLN" ); |
78 | snd_soc_dapm_nc_pin(dapm, pin: "SPKOUTLP" ); |
79 | snd_soc_dapm_nc_pin(dapm, pin: "SPKOUTRP" ); |
80 | snd_soc_dapm_nc_pin(dapm, pin: "SPKOUTRN" ); |
81 | snd_soc_dapm_nc_pin(dapm, pin: "LINEOUT1N" ); |
82 | snd_soc_dapm_nc_pin(dapm, pin: "LINEOUT1P" ); |
83 | snd_soc_dapm_nc_pin(dapm, pin: "LINEOUT2N" ); |
84 | snd_soc_dapm_nc_pin(dapm, pin: "LINEOUT2P" ); |
85 | snd_soc_dapm_nc_pin(dapm, pin: "IN1LP" ); |
86 | snd_soc_dapm_nc_pin(dapm, pin: "IN2LP:VXRN" ); |
87 | snd_soc_dapm_nc_pin(dapm, pin: "IN1RP" ); |
88 | snd_soc_dapm_nc_pin(dapm, pin: "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 | phandle_name: "samsung,i2s-controller" , index: 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(dev: &pdev->dev, card); |
159 | |
160 | if (ret) |
161 | dev_err_probe(dev: &pdev->dev, err: ret, fmt: "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 | |