1/*
2 * Machine driver for EVAL-ADAU1x61MINIZ on Analog Devices bfin
3 * evaluation boards.
4 *
5 * Copyright 2011-2014 Analog Devices Inc.
6 * Author: Lars-Peter Clausen <lars@metafoo.de>
7 *
8 * Licensed under the GPL-2 or later.
9 */
10
11#include <linux/module.h>
12#include <linux/device.h>
13#include <linux/slab.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/soc.h>
17#include <sound/pcm_params.h>
18
19#include "../codecs/adau17x1.h"
20
21static const struct snd_soc_dapm_widget bfin_eval_adau1x61_dapm_widgets[] = {
22	SND_SOC_DAPM_LINE("In 1", NULL),
23	SND_SOC_DAPM_LINE("In 2", NULL),
24	SND_SOC_DAPM_LINE("In 3-4", NULL),
25
26	SND_SOC_DAPM_LINE("Diff Out L", NULL),
27	SND_SOC_DAPM_LINE("Diff Out R", NULL),
28	SND_SOC_DAPM_LINE("Stereo Out", NULL),
29	SND_SOC_DAPM_HP("Capless HP Out", NULL),
30};
31
32static const struct snd_soc_dapm_route bfin_eval_adau1x61_dapm_routes[] = {
33	{ "LAUX", NULL, "In 3-4" },
34	{ "RAUX", NULL, "In 3-4" },
35	{ "LINP", NULL, "In 1" },
36	{ "LINN", NULL, "In 1"},
37	{ "RINP", NULL, "In 2" },
38	{ "RINN", NULL, "In 2" },
39
40	{ "In 1", NULL, "MICBIAS" },
41	{ "In 2", NULL, "MICBIAS" },
42
43	{ "Capless HP Out", NULL, "LHP" },
44	{ "Capless HP Out", NULL, "RHP" },
45	{ "Diff Out L", NULL, "LOUT" },
46	{ "Diff Out R", NULL, "ROUT" },
47	{ "Stereo Out", NULL, "LOUT" },
48	{ "Stereo Out", NULL, "ROUT" },
49};
50
51static int bfin_eval_adau1x61_hw_params(struct snd_pcm_substream *substream,
52	struct snd_pcm_hw_params *params)
53{
54	struct snd_soc_pcm_runtime *rtd = substream->private_data;
55	struct snd_soc_dai *codec_dai = rtd->codec_dai;
56	int pll_rate;
57	int ret;
58
59	switch (params_rate(params)) {
60	case 48000:
61	case 8000:
62	case 12000:
63	case 16000:
64	case 24000:
65	case 32000:
66	case 96000:
67		pll_rate = 48000 * 1024;
68		break;
69	case 44100:
70	case 7350:
71	case 11025:
72	case 14700:
73	case 22050:
74	case 29400:
75	case 88200:
76		pll_rate = 44100 * 1024;
77		break;
78	default:
79		return -EINVAL;
80	}
81
82	ret = snd_soc_dai_set_pll(codec_dai, ADAU17X1_PLL,
83			ADAU17X1_PLL_SRC_MCLK, 12288000, pll_rate);
84	if (ret)
85		return ret;
86
87	ret = snd_soc_dai_set_sysclk(codec_dai, ADAU17X1_CLK_SRC_PLL, pll_rate,
88			SND_SOC_CLOCK_IN);
89
90	return ret;
91}
92
93static const struct snd_soc_ops bfin_eval_adau1x61_ops = {
94	.hw_params = bfin_eval_adau1x61_hw_params,
95};
96
97static struct snd_soc_dai_link bfin_eval_adau1x61_dai = {
98	.name = "adau1x61",
99	.stream_name = "adau1x61",
100	.cpu_dai_name = "bfin-i2s.0",
101	.codec_dai_name = "adau-hifi",
102	.platform_name = "bfin-i2s-pcm-audio",
103	.codec_name = "adau1761.0-0038",
104	.ops = &bfin_eval_adau1x61_ops,
105	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
106		SND_SOC_DAIFMT_CBM_CFM,
107};
108
109static struct snd_soc_card bfin_eval_adau1x61 = {
110	.name = "bfin-eval-adau1x61",
111	.driver_name = "eval-adau1x61",
112	.dai_link = &bfin_eval_adau1x61_dai,
113	.num_links = 1,
114
115	.dapm_widgets = bfin_eval_adau1x61_dapm_widgets,
116	.num_dapm_widgets = ARRAY_SIZE(bfin_eval_adau1x61_dapm_widgets),
117	.dapm_routes = bfin_eval_adau1x61_dapm_routes,
118	.num_dapm_routes = ARRAY_SIZE(bfin_eval_adau1x61_dapm_routes),
119	.fully_routed = true,
120};
121
122static int bfin_eval_adau1x61_probe(struct platform_device *pdev)
123{
124	bfin_eval_adau1x61.dev = &pdev->dev;
125
126	return devm_snd_soc_register_card(&pdev->dev, &bfin_eval_adau1x61);
127}
128
129static struct platform_driver bfin_eval_adau1x61_driver = {
130	.driver = {
131		.name = "bfin-eval-adau1x61",
132		.pm = &snd_soc_pm_ops,
133	},
134	.probe = bfin_eval_adau1x61_probe,
135};
136module_platform_driver(bfin_eval_adau1x61_driver);
137
138MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
139MODULE_DESCRIPTION("ALSA SoC bfin adau1x61 driver");
140MODULE_LICENSE("GPL");
141MODULE_ALIAS("platform:bfin-eval-adau1x61");
142