tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * linux/sound/soc/pxa/brownstone.c
4 *
5 * Copyright (C) 2011 Marvell International Ltd.
6 */
7
8#include <linux/module.h>
9#include <sound/core.h>
10#include <sound/pcm.h>
11#include <sound/soc.h>
12#include <sound/jack.h>
13
14#include "../codecs/wm8994.h"
15#include "mmp-sspa.h"
16
17static const struct snd_kcontrol_new brownstone_dapm_control[] = {
18 SOC_DAPM_PIN_SWITCH("Ext Spk"),
19};
20
21static const struct snd_soc_dapm_widget brownstone_dapm_widgets[] = {
22 SND_SOC_DAPM_SPK("Ext Spk", NULL),
23 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
24 SND_SOC_DAPM_MIC("Headset Mic", NULL),
25 SND_SOC_DAPM_MIC("Main Mic", NULL),
26};
27
28static const struct snd_soc_dapm_route brownstone_audio_map[] = {
29 {"Ext Spk", NULL, "SPKOUTLP"},
30 {"Ext Spk", NULL, "SPKOUTLN"},
31 {"Ext Spk", NULL, "SPKOUTRP"},
32 {"Ext Spk", NULL, "SPKOUTRN"},
33
34 {"Headset Stereophone", NULL, "HPOUT1L"},
35 {"Headset Stereophone", NULL, "HPOUT1R"},
36
37 {"IN1RN", NULL, "Headset Mic"},
38
39 {"DMIC1DAT", NULL, "MICBIAS1"},
40 {"MICBIAS1", NULL, "Main Mic"},
41};
42
43static int brownstone_wm8994_hw_params(struct snd_pcm_substream *substream,
44 struct snd_pcm_hw_params *params)
45{
46 struct snd_soc_pcm_runtime *rtd = substream->private_data;
47 struct snd_soc_dai *codec_dai = rtd->codec_dai;
48 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
49 int freq_out, sspa_mclk, sysclk;
50
51 if (params_rate(params) > 11025) {
52 freq_out = params_rate(params) * 512;
53 sysclk = params_rate(params) * 256;
54 sspa_mclk = params_rate(params) * 64;
55 } else {
56 freq_out = params_rate(params) * 1024;
57 sysclk = params_rate(params) * 512;
58 sspa_mclk = params_rate(params) * 64;
59 }
60
61 snd_soc_dai_set_sysclk(cpu_dai, MMP_SSPA_CLK_AUDIO, freq_out, 0);
62 snd_soc_dai_set_pll(cpu_dai, MMP_SYSCLK, 0, freq_out, sysclk);
63 snd_soc_dai_set_pll(cpu_dai, MMP_SSPA_CLK, 0, freq_out, sspa_mclk);
64
65 /* set wm8994 sysclk */
66 snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_MCLK1, sysclk, 0);
67
68 return 0;
69}
70
71/* machine stream operations */
72static const struct snd_soc_ops brownstone_ops = {
73 .hw_params = brownstone_wm8994_hw_params,
74};
75
76static struct snd_soc_dai_link brownstone_wm8994_dai[] = {
77{
78 .name = "WM8994",
79 .stream_name = "WM8994 HiFi",
80 .cpu_dai_name = "mmp-sspa-dai.0",
81 .codec_dai_name = "wm8994-aif1",
82 .platform_name = "mmp-pcm-audio",
83 .codec_name = "wm8994-codec",
84 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
85 SND_SOC_DAIFMT_CBS_CFS,
86 .ops = &brownstone_ops,
87},
88};
89
90/* audio machine driver */
91static struct snd_soc_card brownstone = {
92 .name = "brownstone",
93 .owner = THIS_MODULE,
94 .dai_link = brownstone_wm8994_dai,
95 .num_links = ARRAY_SIZE(brownstone_wm8994_dai),
96
97 .controls = brownstone_dapm_control,
98 .num_controls = ARRAY_SIZE(brownstone_dapm_control),
99 .dapm_widgets = brownstone_dapm_widgets,
100 .num_dapm_widgets = ARRAY_SIZE(brownstone_dapm_widgets),
101 .dapm_routes = brownstone_audio_map,
102 .num_dapm_routes = ARRAY_SIZE(brownstone_audio_map),
103 .fully_routed = true,
104};
105
106static int brownstone_probe(struct platform_device *pdev)
107{
108 int ret;
109
110 brownstone.dev = &pdev->dev;
111 ret = devm_snd_soc_register_card(&pdev->dev, &brownstone);
112 if (ret)
113 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
114 ret);
115 return ret;
116}
117
118static struct platform_driver mmp_driver = {
119 .driver = {
120 .name = "brownstone-audio",
121 .pm = &snd_soc_pm_ops,
122 },
123 .probe = brownstone_probe,
124};
125
126module_platform_driver(mmp_driver);
127
128MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
129MODULE_DESCRIPTION("ALSA SoC Brownstone");
130MODULE_LICENSE("GPL");
131MODULE_ALIAS("platform:brownstone-audio");