tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Lowland audio support
3 *
4 * Copyright 2011 Wolfson Microelectronics
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#include <sound/soc.h>
13#include <sound/soc-dapm.h>
14#include <sound/jack.h>
15#include <linux/gpio.h>
16#include <linux/module.h>
17
18#include "../codecs/wm5100.h"
19#include "../codecs/wm9081.h"
20
21#define MCLK1_RATE (44100 * 512)
22#define CLKOUT_RATE (44100 * 256)
23
24static struct snd_soc_jack lowland_headset;
25
26/* Headset jack detection DAPM pins */
27static struct snd_soc_jack_pin lowland_headset_pins[] = {
28 {
29 .pin = "Headphone",
30 .mask = SND_JACK_HEADPHONE | SND_JACK_LINEOUT,
31 },
32 {
33 .pin = "Headset Mic",
34 .mask = SND_JACK_MICROPHONE,
35 },
36};
37
38static int lowland_wm5100_init(struct snd_soc_pcm_runtime *rtd)
39{
40 struct snd_soc_codec *codec = rtd->codec;
41 int ret;
42
43 ret = snd_soc_codec_set_sysclk(codec, WM5100_CLK_SYSCLK,
44 WM5100_CLKSRC_MCLK1, MCLK1_RATE,
45 SND_SOC_CLOCK_IN);
46 if (ret < 0) {
47 pr_err("Failed to set SYSCLK clock source: %d\n", ret);
48 return ret;
49 }
50
51 /* Clock OPCLK, used by the other audio components. */
52 ret = snd_soc_codec_set_sysclk(codec, WM5100_CLK_OPCLK, 0,
53 CLKOUT_RATE, 0);
54 if (ret < 0) {
55 pr_err("Failed to set OPCLK rate: %d\n", ret);
56 return ret;
57 }
58
59 ret = snd_soc_jack_new(codec, "Headset",
60 SND_JACK_LINEOUT | SND_JACK_HEADSET |
61 SND_JACK_BTN_0,
62 &lowland_headset);
63 if (ret)
64 return ret;
65
66 ret = snd_soc_jack_add_pins(&lowland_headset,
67 ARRAY_SIZE(lowland_headset_pins),
68 lowland_headset_pins);
69 if (ret)
70 return ret;
71
72 wm5100_detect(codec, &lowland_headset);
73
74 return 0;
75}
76
77static int lowland_wm9081_init(struct snd_soc_pcm_runtime *rtd)
78{
79 struct snd_soc_codec *codec = rtd->codec;
80
81 snd_soc_dapm_nc_pin(&codec->dapm, "LINEOUT");
82
83 /* At any time the WM9081 is active it will have this clock */
84 return snd_soc_codec_set_sysclk(codec, WM9081_SYSCLK_MCLK, 0,
85 CLKOUT_RATE, 0);
86}
87
88static const struct snd_soc_pcm_stream sub_params = {
89 .formats = SNDRV_PCM_FMTBIT_S32_LE,
90 .rate_min = 44100,
91 .rate_max = 44100,
92 .channels_min = 2,
93 .channels_max = 2,
94};
95
96static struct snd_soc_dai_link lowland_dai[] = {
97 {
98 .name = "CPU",
99 .stream_name = "CPU",
100 .cpu_dai_name = "samsung-i2s.0",
101 .codec_dai_name = "wm5100-aif1",
102 .platform_name = "samsung-i2s.0",
103 .codec_name = "wm5100.1-001a",
104 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
105 SND_SOC_DAIFMT_CBM_CFM,
106 .init = lowland_wm5100_init,
107 },
108 {
109 .name = "Baseband",
110 .stream_name = "Baseband",
111 .cpu_dai_name = "wm5100-aif2",
112 .codec_dai_name = "wm1250-ev1",
113 .codec_name = "wm1250-ev1.1-0027",
114 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
115 SND_SOC_DAIFMT_CBM_CFM,
116 .ignore_suspend = 1,
117 },
118 {
119 .name = "Sub Speaker",
120 .stream_name = "Sub Speaker",
121 .cpu_dai_name = "wm5100-aif3",
122 .codec_dai_name = "wm9081-hifi",
123 .codec_name = "wm9081.1-006c",
124 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
125 SND_SOC_DAIFMT_CBM_CFM,
126 .ignore_suspend = 1,
127 .params = &sub_params,
128 .init = lowland_wm9081_init,
129 },
130};
131
132static struct snd_soc_codec_conf lowland_codec_conf[] = {
133 {
134 .dev_name = "wm9081.1-006c",
135 .name_prefix = "Sub",
136 },
137};
138
139static const struct snd_kcontrol_new controls[] = {
140 SOC_DAPM_PIN_SWITCH("Main Speaker"),
141 SOC_DAPM_PIN_SWITCH("Main DMIC"),
142 SOC_DAPM_PIN_SWITCH("Main AMIC"),
143 SOC_DAPM_PIN_SWITCH("WM1250 Input"),
144 SOC_DAPM_PIN_SWITCH("WM1250 Output"),
145 SOC_DAPM_PIN_SWITCH("Headphone"),
146};
147
148static struct snd_soc_dapm_widget widgets[] = {
149 SND_SOC_DAPM_HP("Headphone", NULL),
150 SND_SOC_DAPM_MIC("Headset Mic", NULL),
151
152 SND_SOC_DAPM_SPK("Main Speaker", NULL),
153
154 SND_SOC_DAPM_MIC("Main AMIC", NULL),
155 SND_SOC_DAPM_MIC("Main DMIC", NULL),
156};
157
158static struct snd_soc_dapm_route audio_paths[] = {
159 { "Sub IN1", NULL, "HPOUT2L" },
160 { "Sub IN2", NULL, "HPOUT2R" },
161
162 { "Main Speaker", NULL, "Sub SPKN" },
163 { "Main Speaker", NULL, "Sub SPKP" },
164 { "Main Speaker", NULL, "SPKDAT1" },
165};
166
167static struct snd_soc_card lowland = {
168 .name = "Lowland",
169 .owner = THIS_MODULE,
170 .dai_link = lowland_dai,
171 .num_links = ARRAY_SIZE(lowland_dai),
172 .codec_conf = lowland_codec_conf,
173 .num_configs = ARRAY_SIZE(lowland_codec_conf),
174
175 .controls = controls,
176 .num_controls = ARRAY_SIZE(controls),
177 .dapm_widgets = widgets,
178 .num_dapm_widgets = ARRAY_SIZE(widgets),
179 .dapm_routes = audio_paths,
180 .num_dapm_routes = ARRAY_SIZE(audio_paths),
181};
182
183static int lowland_probe(struct platform_device *pdev)
184{
185 struct snd_soc_card *card = &lowland;
186 int ret;
187
188 card->dev = &pdev->dev;
189
190 ret = snd_soc_register_card(card);
191 if (ret) {
192 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
193 ret);
194 return ret;
195 }
196
197 return 0;
198}
199
200static int lowland_remove(struct platform_device *pdev)
201{
202 struct snd_soc_card *card = platform_get_drvdata(pdev);
203
204 snd_soc_unregister_card(card);
205
206 return 0;
207}
208
209static struct platform_driver lowland_driver = {
210 .driver = {
211 .name = "lowland",
212 .owner = THIS_MODULE,
213 .pm = &snd_soc_pm_ops,
214 },
215 .probe = lowland_probe,
216 .remove = lowland_remove,
217};
218
219module_platform_driver(lowland_driver);
220
221MODULE_DESCRIPTION("Lowland audio support");
222MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
223MODULE_LICENSE("GPL");
224MODULE_ALIAS("platform:lowland");