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 #include <linux/of_device.h>
9
10 /*
11 * Default CFG switch settings to use this driver:
12 * SMDKV310: CFG5-1000, CFG7-111111
13 */
14
15 /*
16 * Configure audio route as :-
17 * $ amixer sset 'DAC1' on,on
18 * $ amixer sset 'Right Headphone Mux' 'DAC'
19 * $ amixer sset 'Left Headphone Mux' 'DAC'
20 * $ amixer sset 'DAC1R Mixer AIF1.1' on
21 * $ amixer sset 'DAC1L Mixer AIF1.1' on
22 * $ amixer sset 'IN2L' on
23 * $ amixer sset 'IN2L PGA IN2LN' on
24 * $ amixer sset 'MIXINL IN2L' on
25 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
26 * $ amixer sset 'IN2R' on
27 * $ amixer sset 'IN2R PGA IN2RN' on
28 * $ amixer sset 'MIXINR IN2R' on
29 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
30 */
31
32 /* SMDK has a 16.934MHZ crystal attached to WM8994 */
33 #define SMDK_WM8994_FREQ 16934000
34
35 struct smdk_wm8994_data {
36 int mclk1_rate;
37 };
38
39 /* Default SMDKs */
40 static struct smdk_wm8994_data smdk_board_data = {
41 .mclk1_rate = SMDK_WM8994_FREQ,
42 };
43
smdk_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)44 static int smdk_hw_params(struct snd_pcm_substream *substream,
45 struct snd_pcm_hw_params *params)
46 {
47 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
48 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
49 unsigned int pll_out;
50 int ret;
51
52 /* AIF1CLK should be >=3MHz for optimal performance */
53 if (params_width(params) == 24)
54 pll_out = params_rate(params) * 384;
55 else if (params_rate(params) == 8000 || params_rate(params) == 11025)
56 pll_out = params_rate(params) * 512;
57 else
58 pll_out = params_rate(params) * 256;
59
60 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
61 SMDK_WM8994_FREQ, pll_out);
62 if (ret < 0)
63 return ret;
64
65 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
66 pll_out, SND_SOC_CLOCK_IN);
67 if (ret < 0)
68 return ret;
69
70 return 0;
71 }
72
73 /*
74 * SMDK WM8994 DAI operations.
75 */
76 static const struct snd_soc_ops smdk_ops = {
77 .hw_params = smdk_hw_params,
78 };
79
smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime * rtd)80 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
81 {
82 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
83
84 /* Other pins NC */
85 snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
86 snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
87 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
88 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
89 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
90 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
91 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
92 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
93 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
94 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
95 snd_soc_dapm_nc_pin(dapm, "IN1LP");
96 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
97 snd_soc_dapm_nc_pin(dapm, "IN1RP");
98 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
99
100 return 0;
101 }
102
103 SND_SOC_DAILINK_DEFS(aif1,
104 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
105 DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
106 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
107
108 SND_SOC_DAILINK_DEFS(fifo_tx,
109 DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
110 DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
111 DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
112
113 static struct snd_soc_dai_link smdk_dai[] = {
114 { /* Primary DAI i/f */
115 .name = "WM8994 AIF1",
116 .stream_name = "Pri_Dai",
117 .init = smdk_wm8994_init_paiftx,
118 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
119 SND_SOC_DAIFMT_CBM_CFM,
120 .ops = &smdk_ops,
121 SND_SOC_DAILINK_REG(aif1),
122 }, { /* Sec_Fifo Playback i/f */
123 .name = "Sec_FIFO TX",
124 .stream_name = "Sec_Dai",
125 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
126 SND_SOC_DAIFMT_CBM_CFM,
127 .ops = &smdk_ops,
128 SND_SOC_DAILINK_REG(fifo_tx),
129 },
130 };
131
132 static struct snd_soc_card smdk = {
133 .name = "SMDK-I2S",
134 .owner = THIS_MODULE,
135 .dai_link = smdk_dai,
136 .num_links = ARRAY_SIZE(smdk_dai),
137 };
138
139 static const struct of_device_id samsung_wm8994_of_match[] __maybe_unused = {
140 { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
141 {},
142 };
143 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
144
smdk_audio_probe(struct platform_device * pdev)145 static int smdk_audio_probe(struct platform_device *pdev)
146 {
147 int ret;
148 struct device_node *np = pdev->dev.of_node;
149 struct snd_soc_card *card = &smdk;
150 struct smdk_wm8994_data *board;
151 const struct of_device_id *id;
152
153 card->dev = &pdev->dev;
154
155 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
156 if (!board)
157 return -ENOMEM;
158
159 if (np) {
160 smdk_dai[0].cpus->dai_name = NULL;
161 smdk_dai[0].cpus->of_node = of_parse_phandle(np,
162 "samsung,i2s-controller", 0);
163 if (!smdk_dai[0].cpus->of_node) {
164 dev_err(&pdev->dev,
165 "Property 'samsung,i2s-controller' missing or invalid\n");
166 ret = -EINVAL;
167 return ret;
168 }
169
170 smdk_dai[0].platforms->name = NULL;
171 smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
172 }
173
174 id = of_match_device(samsung_wm8994_of_match, &pdev->dev);
175 if (id)
176 *board = *((struct smdk_wm8994_data *)id->data);
177
178 platform_set_drvdata(pdev, board);
179
180 ret = devm_snd_soc_register_card(&pdev->dev, card);
181
182 if (ret)
183 dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
184
185 return ret;
186 }
187
188 static struct platform_driver smdk_audio_driver = {
189 .driver = {
190 .name = "smdk-audio-wm8994",
191 .of_match_table = of_match_ptr(samsung_wm8994_of_match),
192 .pm = &snd_soc_pm_ops,
193 },
194 .probe = smdk_audio_probe,
195 };
196
197 module_platform_driver(smdk_audio_driver);
198
199 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
200 MODULE_LICENSE("GPL");
201 MODULE_ALIAS("platform:smdk-audio-wm8994");
202