1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
4 *
5 * Copyright (C) 2008 Bluewater Systems Ltd
6 * Author: Ryan Mallon
7 */
8
9 #include <linux/platform_device.h>
10 #include <linux/module.h>
11 #include <linux/soc/cirrus/ep93xx.h>
12 #include <sound/core.h>
13 #include <sound/pcm.h>
14 #include <sound/soc.h>
15
16 #include <asm/mach-types.h>
17
18 #include "../codecs/tlv320aic23.h"
19
20 #define CODEC_CLOCK 5644800
21
snappercl15_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)22 static int snappercl15_hw_params(struct snd_pcm_substream *substream,
23 struct snd_pcm_hw_params *params)
24 {
25 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
26 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
27 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
28 int err;
29
30 err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
31 SND_SOC_CLOCK_IN);
32 if (err)
33 return err;
34
35 err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
36 SND_SOC_CLOCK_OUT);
37 if (err)
38 return err;
39
40 return 0;
41 }
42
43 static const struct snd_soc_ops snappercl15_ops = {
44 .hw_params = snappercl15_hw_params,
45 };
46
47 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
48 SND_SOC_DAPM_HP("Headphone Jack", NULL),
49 SND_SOC_DAPM_LINE("Line In", NULL),
50 SND_SOC_DAPM_MIC("Mic Jack", NULL),
51 };
52
53 static const struct snd_soc_dapm_route audio_map[] = {
54 {"Headphone Jack", NULL, "LHPOUT"},
55 {"Headphone Jack", NULL, "RHPOUT"},
56
57 {"LLINEIN", NULL, "Line In"},
58 {"RLINEIN", NULL, "Line In"},
59
60 {"MICIN", NULL, "Mic Jack"},
61 };
62
63 SND_SOC_DAILINK_DEFS(aic23,
64 DAILINK_COMP_ARRAY(COMP_CPU("ep93xx-i2s")),
65 DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic23-codec.0-001a",
66 "tlv320aic23-hifi")),
67 DAILINK_COMP_ARRAY(COMP_PLATFORM("ep93xx-i2s")));
68
69 static struct snd_soc_dai_link snappercl15_dai = {
70 .name = "tlv320aic23",
71 .stream_name = "AIC23",
72 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
73 SND_SOC_DAIFMT_CBC_CFC,
74 .ops = &snappercl15_ops,
75 SND_SOC_DAILINK_REG(aic23),
76 };
77
78 static struct snd_soc_card snd_soc_snappercl15 = {
79 .name = "Snapper CL15",
80 .owner = THIS_MODULE,
81 .dai_link = &snappercl15_dai,
82 .num_links = 1,
83
84 .dapm_widgets = tlv320aic23_dapm_widgets,
85 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
86 .dapm_routes = audio_map,
87 .num_dapm_routes = ARRAY_SIZE(audio_map),
88 };
89
snappercl15_probe(struct platform_device * pdev)90 static int snappercl15_probe(struct platform_device *pdev)
91 {
92 struct snd_soc_card *card = &snd_soc_snappercl15;
93 int ret;
94
95 ret = ep93xx_i2s_acquire();
96 if (ret)
97 return ret;
98
99 card->dev = &pdev->dev;
100
101 ret = snd_soc_register_card(card);
102 if (ret) {
103 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
104 ret);
105 ep93xx_i2s_release();
106 }
107
108 return ret;
109 }
110
snappercl15_remove(struct platform_device * pdev)111 static int snappercl15_remove(struct platform_device *pdev)
112 {
113 struct snd_soc_card *card = platform_get_drvdata(pdev);
114
115 snd_soc_unregister_card(card);
116 ep93xx_i2s_release();
117
118 return 0;
119 }
120
121 static struct platform_driver snappercl15_driver = {
122 .driver = {
123 .name = "snappercl15-audio",
124 },
125 .probe = snappercl15_probe,
126 .remove = snappercl15_remove,
127 };
128
129 module_platform_driver(snappercl15_driver);
130
131 MODULE_AUTHOR("Ryan Mallon");
132 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
133 MODULE_LICENSE("GPL");
134 MODULE_ALIAS("platform:snappercl15-audio");
135