1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// SPDX-License-Identifier: GPL-2.0+
#include "../codecs/wm8994.h"
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
/*
* Default CFG switch settings to use this driver:
* SMDKV310: CFG5-1000, CFG7-111111
*/
/*
* Configure audio route as :-
* $ amixer sset 'DAC1' on,on
* $ amixer sset 'Right Headphone Mux' 'DAC'
* $ amixer sset 'Left Headphone Mux' 'DAC'
* $ amixer sset 'DAC1R Mixer AIF1.1' on
* $ amixer sset 'DAC1L Mixer AIF1.1' on
* $ amixer sset 'IN2L' on
* $ amixer sset 'IN2L PGA IN2LN' on
* $ amixer sset 'MIXINL IN2L' on
* $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
* $ amixer sset 'IN2R' on
* $ amixer sset 'IN2R PGA IN2RN' on
* $ amixer sset 'MIXINR IN2R' on
* $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
*/
/* SMDK has a 16.934MHZ crystal attached to WM8994 */
#define SMDK_WM8994_FREQ 16934000
struct smdk_wm8994_data {
int mclk1_rate;
};
/* Default SMDKs */
static struct smdk_wm8994_data smdk_board_data = {
.mclk1_rate = SMDK_WM8994_FREQ,
};
static int smdk_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
unsigned int pll_out;
int ret;
/* AIF1CLK should be >=3MHz for optimal performance */
if (params_width(params) == 24)
pll_out = params_rate(params) * 384;
else if (params_rate(params) == 8000 || params_rate(params) == 11025)
pll_out = params_rate(params) * 512;
else
pll_out = params_rate(params) * 256;
ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
SMDK_WM8994_FREQ, pll_out);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
pll_out, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
/*
* SMDK WM8994 DAI operations.
*/
static struct snd_soc_ops smdk_ops = {
.hw_params = smdk_hw_params,
};
static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
/* Other pins NC */
snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
snd_soc_dapm_nc_pin(dapm, "IN1LP");
snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
snd_soc_dapm_nc_pin(dapm, "IN1RP");
snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
return 0;
}
SND_SOC_DAILINK_DEFS(aif1,
DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
SND_SOC_DAILINK_DEFS(fifo_tx,
DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));
static struct snd_soc_dai_link smdk_dai[] = {
{ /* Primary DAI i/f */
.name = "WM8994 AIF1",
.stream_name = "Pri_Dai",
.init = smdk_wm8994_init_paiftx,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &smdk_ops,
SND_SOC_DAILINK_REG(aif1),
}, { /* Sec_Fifo Playback i/f */
.name = "Sec_FIFO TX",
.stream_name = "Sec_Dai",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.ops = &smdk_ops,
SND_SOC_DAILINK_REG(fifo_tx),
},
};
static struct snd_soc_card smdk = {
.name = "SMDK-I2S",
.owner = THIS_MODULE,
.dai_link = smdk_dai,
.num_links = ARRAY_SIZE(smdk_dai),
};
static const struct of_device_id samsung_wm8994_of_match[] = {
{ .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data },
{},
};
MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);
static int smdk_audio_probe(struct platform_device *pdev)
{
int ret;
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &smdk;
struct smdk_wm8994_data *board;
const struct of_device_id *id;
card->dev = &pdev->dev;
board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL);
if (!board)
return -ENOMEM;
if (np) {
smdk_dai[0].cpus->dai_name = NULL;
smdk_dai[0].cpus->of_node = of_parse_phandle(np,
"samsung,i2s-controller", 0);
if (!smdk_dai[0].cpus->of_node) {
dev_err(&pdev->dev,
"Property 'samsung,i2s-controller' missing or invalid\n");
ret = -EINVAL;
}
smdk_dai[0].platforms->name = NULL;
smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
}
id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev);
if (id)
*board = *((struct smdk_wm8994_data *)id->data);
platform_set_drvdata(pdev, board);
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret && ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret);
return ret;
}
static struct platform_driver smdk_audio_driver = {
.driver = {
.name = "smdk-audio-wm8994",
.of_match_table = of_match_ptr(samsung_wm8994_of_match),
.pm = &snd_soc_pm_ops,
},
.probe = smdk_audio_probe,
};
module_platform_driver(smdk_audio_driver);
MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:smdk-audio-wm8994");
|
