1/*
2 * Machine driver for EVAL-ADAU1373 on Analog Devices bfin
3 * evaluation boards.
4 *
5 * Copyright 2011 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 <sound/core.h>
14#include <sound/pcm.h>
15#include <sound/soc.h>
16#include <sound/pcm_params.h>
17
18#include "../codecs/adau1373.h"
19
20static const struct snd_soc_dapm_widget bfin_eval_adau1373_dapm_widgets[] = {
21	SND_SOC_DAPM_LINE("Line In1", NULL),
22	SND_SOC_DAPM_LINE("Line In2", NULL),
23	SND_SOC_DAPM_LINE("Line In3", NULL),
24	SND_SOC_DAPM_LINE("Line In4", NULL),
25
26	SND_SOC_DAPM_LINE("Line Out1", NULL),
27	SND_SOC_DAPM_LINE("Line Out2", NULL),
28	SND_SOC_DAPM_LINE("Stereo Out", NULL),
29	SND_SOC_DAPM_HP("Headphone", NULL),
30	SND_SOC_DAPM_HP("Earpiece", NULL),
31	SND_SOC_DAPM_SPK("Speaker", NULL),
32};
33
34static const struct snd_soc_dapm_route bfin_eval_adau1373_dapm_routes[] = {
35	{ "AIN1L", NULL, "Line In1" },
36	{ "AIN1R", NULL, "Line In1" },
37	{ "AIN2L", NULL, "Line In2" },
38	{ "AIN2R", NULL, "Line In2" },
39	{ "AIN3L", NULL, "Line In3" },
40	{ "AIN3R", NULL, "Line In3" },
41	{ "AIN4L", NULL, "Line In4" },
42	{ "AIN4R", NULL, "Line In4" },
43
44	/* MICBIAS can be connected via a jumper to the line-in jack, since w
45	   don't know which one is going to be used, just power both. */
46	{ "Line In1", NULL, "MICBIAS1" },
47	{ "Line In2", NULL, "MICBIAS1" },
48	{ "Line In3", NULL, "MICBIAS1" },
49	{ "Line In4", NULL, "MICBIAS1" },
50	{ "Line In1", NULL, "MICBIAS2" },
51	{ "Line In2", NULL, "MICBIAS2" },
52	{ "Line In3", NULL, "MICBIAS2" },
53	{ "Line In4", NULL, "MICBIAS2" },
54
55	{ "Line Out1", NULL, "LOUT1L" },
56	{ "Line Out1", NULL, "LOUT1R" },
57	{ "Line Out2", NULL, "LOUT2L" },
58	{ "Line Out2", NULL, "LOUT2R" },
59	{ "Headphone", NULL, "HPL" },
60	{ "Headphone", NULL, "HPR" },
61	{ "Earpiece", NULL, "EP" },
62	{ "Speaker", NULL, "SPKL" },
63	{ "Stereo Out", NULL, "SPKR" },
64};
65
66static int bfin_eval_adau1373_hw_params(struct snd_pcm_substream *substream,
67	struct snd_pcm_hw_params *params)
68{
69	struct snd_soc_pcm_runtime *rtd = substream->private_data;
70	struct snd_soc_dai *codec_dai = rtd->codec_dai;
71	int ret;
72	int pll_rate;
73
74	switch (params_rate(params)) {
75	case 48000:
76	case 8000:
77	case 12000:
78	case 16000:
79	case 24000:
80	case 32000:
81		pll_rate = 48000 * 1024;
82		break;
83	case 44100:
84	case 7350:
85	case 11025:
86	case 14700:
87	case 22050:
88	case 29400:
89		pll_rate = 44100 * 1024;
90		break;
91	default:
92		return -EINVAL;
93	}
94
95	ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
96			ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
97	if (ret)
98		return ret;
99
100	ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
101			SND_SOC_CLOCK_IN);
102
103	return ret;
104}
105
106static int bfin_eval_adau1373_codec_init(struct snd_soc_pcm_runtime *rtd)
107{
108	struct snd_soc_dai *codec_dai = rtd->codec_dai;
109	unsigned int pll_rate = 48000 * 1024;
110	int ret;
111
112	ret = snd_soc_dai_set_pll(codec_dai, ADAU1373_PLL1,
113			ADAU1373_PLL_SRC_MCLK1, 12288000, pll_rate);
114	if (ret)
115		return ret;
116
117	ret = snd_soc_dai_set_sysclk(codec_dai, ADAU1373_CLK_SRC_PLL1, pll_rate,
118			SND_SOC_CLOCK_IN);
119
120	return ret;
121}
122static struct snd_soc_ops bfin_eval_adau1373_ops = {
123	.hw_params = bfin_eval_adau1373_hw_params,
124};
125
126static struct snd_soc_dai_link bfin_eval_adau1373_dai = {
127	.name = "adau1373",
128	.stream_name = "adau1373",
129	.cpu_dai_name = "bfin-i2s.0",
130	.codec_dai_name = "adau1373-aif1",
131	.platform_name = "bfin-i2s-pcm-audio",
132	.codec_name = "adau1373.0-001a",
133	.ops = &bfin_eval_adau1373_ops,
134	.init = bfin_eval_adau1373_codec_init,
135	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
136			SND_SOC_DAIFMT_CBM_CFM,
137};
138
139static struct snd_soc_card bfin_eval_adau1373 = {
140	.name = "bfin-eval-adau1373",
141	.owner = THIS_MODULE,
142	.dai_link = &bfin_eval_adau1373_dai,
143	.num_links = 1,
144
145	.dapm_widgets		= bfin_eval_adau1373_dapm_widgets,
146	.num_dapm_widgets	= ARRAY_SIZE(bfin_eval_adau1373_dapm_widgets),
147	.dapm_routes		= bfin_eval_adau1373_dapm_routes,
148	.num_dapm_routes	= ARRAY_SIZE(bfin_eval_adau1373_dapm_routes),
149};
150
151static int bfin_eval_adau1373_probe(struct platform_device *pdev)
152{
153	struct snd_soc_card *card = &bfin_eval_adau1373;
154
155	card->dev = &pdev->dev;
156
157	return snd_soc_register_card(&bfin_eval_adau1373);
158}
159
160static int bfin_eval_adau1373_remove(struct platform_device *pdev)
161{
162	struct snd_soc_card *card = platform_get_drvdata(pdev);
163
164	snd_soc_unregister_card(card);
165
166	return 0;
167}
168
169static struct platform_driver bfin_eval_adau1373_driver = {
170	.driver = {
171		.name = "bfin-eval-adau1373",
172		.pm = &snd_soc_pm_ops,
173	},
174	.probe = bfin_eval_adau1373_probe,
175	.remove = bfin_eval_adau1373_remove,
176};
177
178module_platform_driver(bfin_eval_adau1373_driver);
179
180MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
181MODULE_DESCRIPTION("ALSA SoC bfin adau1373 driver");
182MODULE_LICENSE("GPL");
183MODULE_ALIAS("platform:bfin-eval-adau1373");
184