tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/sound/soc/pxa/brownstone.c
3 *
4 * Copyright (C) 2011 Marvell International Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 */
12
13#include <linux/module.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/soc.h>
17#include <sound/jack.h>
18
19#include "../codecs/wm8994.h"
20#include "mmp-sspa.h"
21
22static const struct snd_kcontrol_new brownstone_dapm_control[] = {
23 SOC_DAPM_PIN_SWITCH("Ext Spk"),
24};
25
26static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
27 SND_SOC_DAPM_SPK("Ext Spk", NULL),
28 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
29 SND_SOC_DAPM_MIC("Headset Mic", NULL),
30 SND_SOC_DAPM_MIC("Main Mic", NULL),
31};
32
33static const struct snd_soc_dapm_route brownstone_audio_map[] = {
34 {"Ext Spk", NULL, "SPKOUTLP"},
35 {"Ext Spk", NULL, "SPKOUTLN"},
36 {"Ext Spk", NULL, "SPKOUTRP"},
37 {"Ext Spk", NULL, "SPKOUTRN"},
38
39 {"Headset Stereophone", NULL, "HPOUT1L"},
40 {"Headset Stereophone", NULL, "HPOUT1R"},
41
42 {"IN1RN", NULL, "Headset Mic"},
43
44 {"DMIC1DAT", NULL, "MICBIAS1"},
45 {"MICBIAS1", NULL, "Main Mic"},
46};
47
48static int brownstone_wm8994_init(struct snd_soc_pcm_runtime *rtd)
49{
50 struct snd_soc_codec *codec = rtd->codec;
51 struct snd_soc_dapm_context *dapm = &codec->dapm;
52
53 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
54 snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");
55 snd_soc_dapm_enable_pin(dapm, "Headset Mic");
56 snd_soc_dapm_enable_pin(dapm, "Main Mic");
57
58 /* set endpoints to not connected */
59 snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
60 snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
61 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
62 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
63 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
64 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
65 snd_soc_dapm_nc_pin(dapm, "IN1LN");
66 snd_soc_dapm_nc_pin(dapm, "IN1LP");
67 snd_soc_dapm_nc_pin(dapm, "IN1RP");
68 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
69 snd_soc_dapm_nc_pin(dapm, "IN2RN");
70 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
71 snd_soc_dapm_nc_pin(dapm, "IN2LN");
72
73 snd_soc_dapm_sync(dapm);
74
75 return 0;
76}
77
78static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
79 struct snd_pcm_hw_params *params)
80{
81 struct snd_soc_pcm_runtime *rtd = substream->private_data;
82 struct snd_soc_dai *codec_dai = rtd->codec_dai;
83 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
84 int freq_out, sspa_mclk, sysclk;
85 int sspa_div;
86
87 if (params_rate(params) > 11025) {
88 freq_out = params_rate(params) * 512;
89 sysclk = params_rate(params) * 256;
90 sspa_mclk = params_rate(params) * 64;
91 } else {
92 freq_out = params_rate(params) * 1024;
93 sysclk = params_rate(params) * 512;
94 sspa_mclk = params_rate(params) * 64;
95 }
96 sspa_div = freq_out;
97 do_div(sspa_div, sspa_mclk);
98
99 snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
100 snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
101 snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
102
103 /* set wm8994 sysclk */
104 snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
105
106 return 0;
107}
108
109/* machine stream operations */
110static struct snd_soc_ops brownstone_ops = {
111 .hw_params = brownstone_wm8994_hw_params,
112};
113
114static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
115{
116 .name = "WM8994",
117 .stream_name = "WM8994 HiFi",
118 .cpu_dai_name = "mmp-sspa-dai.0",
119 .codec_dai_name = "wm8994-aif1",
120 .platform_name = "mmp-pcm-audio",
121 .codec_name = "wm8994-codec",
122 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
123 SND_SOC_DAIFMT_CBS_CFS,
124 .ops = &brownstone_ops,
125 .init = brownstone_wm8994_init,
126},
127};
128
129/* audio machine driver */
130static struct snd_soc_card brownstone = {
131 .name = "brownstone",
132 .owner = THIS_MODULE,
133 .dai_link = brownstone_wm8994_dai,
134 .num_links = ARRAY_SIZE(brownstone_wm8994_dai),
135
136 .controls = brownstone_dapm_control,
137 .num_controls = ARRAY_SIZE(brownstone_dapm_control),
138 .dapm_widgets = brownstone_dapm_widgets,
139 .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
140 .dapm_routes = brownstone_audio_map,
141 .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
142};
143
144static int brownstone_probe(struct platform_device *pdev)
145{
146 int ret;
147
148 brownstone.dev = &pdev->dev;
149 ret = snd_soc_register_card(&brownstone);
150 if (ret)
151 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
152 ret);
153 return ret;
154}
155
156static int brownstone_remove(struct platform_device *pdev)
157{
158 snd_soc_unregister_card(&brownstone);
159 return 0;
160}
161
162static struct platform_driver mmp_driver = {
163 .driver = {
164 .name = "brownstone-audio",
165 .owner = THIS_MODULE,
166 .pm = &snd_soc_pm_ops,
167 },
168 .probe = brownstone_probe,
169 .remove = brownstone_remove,
170};
171
172module_platform_driver(mmp_driver);
173
174MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
175MODULE_DESCRIPTION("ALSA SoC Brownstone");
176MODULE_LICENSE("GPL");