1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
5 * Copyright (C) 2008 Bluewater Systems Ltd
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>
16 #include <asm/mach-types.h>
18 #include "../codecs/tlv320aic23.h"
20 #define CODEC_CLOCK 5644800
22 static int snappercl15_hw_params(struct snd_pcm_substream *substream,
23 struct snd_pcm_hw_params *params)
25 struct snd_soc_pcm_runtime *rtd = substream->private_data;
26 struct snd_soc_dai *codec_dai = rtd->codec_dai;
27 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
30 err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK,
35 err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK,
43 static const struct snd_soc_ops snappercl15_ops = {
44 .hw_params = snappercl15_hw_params,
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),
53 static const struct snd_soc_dapm_route audio_map[] = {
54 {"Headphone Jack", NULL, "LHPOUT"},
55 {"Headphone Jack", NULL, "RHPOUT"},
57 {"LLINEIN", NULL, "Line In"},
58 {"RLINEIN", NULL, "Line In"},
60 {"MICIN", NULL, "Mic Jack"},
63 static struct snd_soc_dai_link snappercl15_dai = {
64 .name = "tlv320aic23",
65 .stream_name = "AIC23",
66 .cpu_dai_name = "ep93xx-i2s",
67 .codec_dai_name = "tlv320aic23-hifi",
68 .codec_name = "tlv320aic23-codec.0-001a",
69 .platform_name = "ep93xx-i2s",
70 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
71 SND_SOC_DAIFMT_CBS_CFS,
72 .ops = &snappercl15_ops,
75 static struct snd_soc_card snd_soc_snappercl15 = {
76 .name = "Snapper CL15",
78 .dai_link = &snappercl15_dai,
81 .dapm_widgets = tlv320aic23_dapm_widgets,
82 .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
83 .dapm_routes = audio_map,
84 .num_dapm_routes = ARRAY_SIZE(audio_map),
87 static int snappercl15_probe(struct platform_device *pdev)
89 struct snd_soc_card *card = &snd_soc_snappercl15;
92 ret = ep93xx_i2s_acquire();
96 card->dev = &pdev->dev;
98 ret = snd_soc_register_card(card);
100 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
102 ep93xx_i2s_release();
108 static int snappercl15_remove(struct platform_device *pdev)
110 struct snd_soc_card *card = platform_get_drvdata(pdev);
112 snd_soc_unregister_card(card);
113 ep93xx_i2s_release();
118 static struct platform_driver snappercl15_driver = {
120 .name = "snappercl15-audio",
122 .probe = snappercl15_probe,
123 .remove = snappercl15_remove,
126 module_platform_driver(snappercl15_driver);
128 MODULE_AUTHOR("Ryan Mallon");
129 MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
130 MODULE_LICENSE("GPL");
131 MODULE_ALIAS("platform:snappercl15-audio");