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Dong Aishengfcb5e472011-07-21 12:36:57 +08001/*
2 * Copyright 2011 Freescale Semiconductor, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19#include <linux/module.h>
20#include <linux/device.h>
21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/soc.h>
24#include <sound/jack.h>
25#include <sound/soc-dapm.h>
26#include <asm/mach-types.h>
27
28#include "../codecs/sgtl5000.h"
29#include "mxs-saif.h"
30
31static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
32 struct snd_pcm_hw_params *params)
33{
34 struct snd_soc_pcm_runtime *rtd = substream->private_data;
35 struct snd_soc_dai *codec_dai = rtd->codec_dai;
36 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
37 unsigned int rate = params_rate(params);
38 u32 dai_format, mclk;
39 int ret;
40
41 /* sgtl5000 does not support 512*rate when in 96000 fs */
42 switch (rate) {
43 case 96000:
44 mclk = 256 * rate;
45 break;
46 default:
47 mclk = 512 * rate;
48 break;
49 }
50
51 /* Sgtl5000 sysclk should be >= 8MHz and <= 27M */
52 if (mclk < 8000000 || mclk > 27000000)
53 return -EINVAL;
54
55 /* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
56 ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
57 if (ret)
58 return ret;
59
60 /* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
61 ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
62 if (ret)
63 return ret;
64
65 /* set codec to slave mode */
66 dai_format = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
67 SND_SOC_DAIFMT_CBS_CFS;
68
69 /* set codec DAI configuration */
70 ret = snd_soc_dai_set_fmt(codec_dai, dai_format);
71 if (ret)
72 return ret;
73
74 /* set cpu DAI configuration */
75 ret = snd_soc_dai_set_fmt(cpu_dai, dai_format);
76 if (ret)
77 return ret;
78
79 return 0;
80}
81
82static struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
83 .hw_params = mxs_sgtl5000_hw_params,
84};
85
86static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
87 {
Dong Aisheng78a262c2011-08-22 00:02:46 +080088 .name = "HiFi Tx",
Dong Aishengfcb5e472011-07-21 12:36:57 +080089 .stream_name = "HiFi Playback",
90 .codec_dai_name = "sgtl5000",
91 .codec_name = "sgtl5000.0-000a",
92 .cpu_dai_name = "mxs-saif.0",
93 .platform_name = "mxs-pcm-audio.0",
94 .ops = &mxs_sgtl5000_hifi_ops,
Dong Aisheng78a262c2011-08-22 00:02:46 +080095 }, {
96 .name = "HiFi Rx",
97 .stream_name = "HiFi Capture",
98 .codec_dai_name = "sgtl5000",
99 .codec_name = "sgtl5000.0-000a",
100 .cpu_dai_name = "mxs-saif.1",
101 .platform_name = "mxs-pcm-audio.1",
102 .ops = &mxs_sgtl5000_hifi_ops,
Dong Aishengfcb5e472011-07-21 12:36:57 +0800103 },
104};
105
106static struct snd_soc_card mxs_sgtl5000 = {
107 .name = "mxs_sgtl5000",
Lothar Waßmanna5b68342011-12-28 20:06:21 +0800108 .owner = THIS_MODULE,
Dong Aishengfcb5e472011-07-21 12:36:57 +0800109 .dai_link = mxs_sgtl5000_dai,
110 .num_links = ARRAY_SIZE(mxs_sgtl5000_dai),
111};
112
113static int __devinit mxs_sgtl5000_probe(struct platform_device *pdev)
114{
115 struct snd_soc_card *card = &mxs_sgtl5000;
116 int ret;
117
118 /*
119 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
120 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
121 * should be >= 8MHz and <= 27M.
122 */
123 ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
124 if (ret)
125 return ret;
126
127 card->dev = &pdev->dev;
128 platform_set_drvdata(pdev, card);
129
130 ret = snd_soc_register_card(card);
131 if (ret) {
132 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
133 ret);
134 return ret;
135 }
136
137 return 0;
138}
139
140static int __devexit mxs_sgtl5000_remove(struct platform_device *pdev)
141{
142 struct snd_soc_card *card = platform_get_drvdata(pdev);
143
144 mxs_saif_put_mclk(0);
145
146 snd_soc_unregister_card(card);
147
148 return 0;
149}
150
151static struct platform_driver mxs_sgtl5000_audio_driver = {
152 .driver = {
153 .name = "mxs-sgtl5000",
154 .owner = THIS_MODULE,
155 },
156 .probe = mxs_sgtl5000_probe,
157 .remove = __devexit_p(mxs_sgtl5000_remove),
158};
159
Axel Lin85aa0962011-11-24 14:21:29 +0800160module_platform_driver(mxs_sgtl5000_audio_driver);
Dong Aishengfcb5e472011-07-21 12:36:57 +0800161
162MODULE_AUTHOR("Freescale Semiconductor, Inc.");
163MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
164MODULE_LICENSE("GPL");
Lothar Waßmann9fd369b2011-12-09 14:38:12 +0100165MODULE_ALIAS("platform:mxs-sgtl5000");