summaryrefslogtreecommitdiff
path: root/sound/soc/mxs/mxs-sgtl5000.c
blob: a6407f4388de7de3fde2ebb8cb9ec032f6c09eaa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright 2011 Freescale Semiconductor, Inc.
 */

#include <linux/module.h>
#include <linux/device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/soc-dapm.h>

#include "../codecs/sgtl5000.h"
#include "mxs-saif.h"

static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	unsigned int rate = params_rate(params);
	u32 mclk;
	int ret;

	/* sgtl5000 does not support 512*rate when in 96000 fs */
	switch (rate) {
	case 96000:
		mclk = 256 * rate;
		break;
	default:
		mclk = 512 * rate;
		break;
	}

	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
	if (ret) {
		dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
			mclk / 1000000, mclk / 1000 % 1000);
		return ret;
	}

	/* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
	ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
	if (ret) {
		dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
			mclk / 1000000, mclk / 1000 % 1000);
		return ret;
	}

	return 0;
}

static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
	.hw_params = mxs_sgtl5000_hw_params,
};

#define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
	SND_SOC_DAIFMT_CBS_CFS)


SND_SOC_DAILINK_DEFS(hifi_tx,
	DAILINK_COMP_ARRAY(COMP_EMPTY()),
	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
	DAILINK_COMP_ARRAY(COMP_EMPTY()));

SND_SOC_DAILINK_DEFS(hifi_rx,
	DAILINK_COMP_ARRAY(COMP_EMPTY()),
	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
	DAILINK_COMP_ARRAY(COMP_EMPTY()));

static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
	{
		.name		= "HiFi Tx",
		.stream_name	= "HiFi Playback",
		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
		.ops		= &mxs_sgtl5000_hifi_ops,
		.playback_only	= true,
		SND_SOC_DAILINK_REG(hifi_tx),
	}, {
		.name		= "HiFi Rx",
		.stream_name	= "HiFi Capture",
		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
		.ops		= &mxs_sgtl5000_hifi_ops,
		.capture_only	= true,
		SND_SOC_DAILINK_REG(hifi_rx),
	},
};

static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = {
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_LINE("Line In Jack", NULL),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_SPK("Line Out Jack", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
};

static struct snd_soc_card mxs_sgtl5000 = {
	.name		= "mxs_sgtl5000",
	.owner		= THIS_MODULE,
	.dai_link	= mxs_sgtl5000_dai,
	.num_links	= ARRAY_SIZE(mxs_sgtl5000_dai),
};

static int mxs_sgtl5000_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &mxs_sgtl5000;
	int ret, i;
	struct device_node *np = pdev->dev.of_node;
	struct device_node *saif_np[2], *codec_np;

	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
	codec_np = of_parse_phandle(np, "audio-codec", 0);
	if (!saif_np[0] || !saif_np[1] || !codec_np) {
		dev_err(&pdev->dev, "phandle missing or invalid\n");
		return -EINVAL;
	}

	for (i = 0; i < 2; i++) {
		mxs_sgtl5000_dai[i].codecs->name = NULL;
		mxs_sgtl5000_dai[i].codecs->of_node = codec_np;
		mxs_sgtl5000_dai[i].cpus->dai_name = NULL;
		mxs_sgtl5000_dai[i].cpus->of_node = saif_np[i];
		mxs_sgtl5000_dai[i].platforms->name = NULL;
		mxs_sgtl5000_dai[i].platforms->of_node = saif_np[i];
	}

	of_node_put(codec_np);
	of_node_put(saif_np[0]);
	of_node_put(saif_np[1]);

	/*
	 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
	 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
	 * should be >= 8MHz and <= 27M.
	 */
	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
	if (ret) {
		dev_err(&pdev->dev, "failed to get mclk\n");
		return ret;
	}

	card->dev = &pdev->dev;

	if (of_find_property(np, "audio-routing", NULL)) {
		card->dapm_widgets = mxs_sgtl5000_dapm_widgets;
		card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets);

		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
		if (ret) {
			dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n",
				ret);
			return ret;
		}
	}

	ret = devm_snd_soc_register_card(&pdev->dev, card);
	if (ret) {
		if (ret != -EPROBE_DEFER)
			dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
				ret);
		return ret;
	}

	return 0;
}

static int mxs_sgtl5000_remove(struct platform_device *pdev)
{
	mxs_saif_put_mclk(0);

	return 0;
}

static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
	{ .compatible = "fsl,mxs-audio-sgtl5000", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);

static struct platform_driver mxs_sgtl5000_audio_driver = {
	.driver = {
		.name = "mxs-sgtl5000",
		.of_match_table = mxs_sgtl5000_dt_ids,
	},
	.probe = mxs_sgtl5000_probe,
	.remove = mxs_sgtl5000_remove,
};

module_platform_driver(mxs_sgtl5000_audio_driver);

MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:mxs-sgtl5000");