1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright 2011 Freescale Semiconductor, Inc.
4 */
5
6#include <linux/module.h>
7#include <linux/device.h>
8#include <linux/of.h>
9#include <sound/core.h>
10#include <sound/pcm.h>
11#include <sound/soc.h>
12#include <sound/jack.h>
13#include <sound/soc-dapm.h>
14
15#include "../codecs/sgtl5000.h"
16#include "mxs-saif.h"
17
18static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
19	struct snd_pcm_hw_params *params)
20{
21	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
22	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
23	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
24	unsigned int rate = params_rate(params);
25	u32 mclk;
26	int ret;
27
28	/* sgtl5000 does not support 512*rate when in 96000 fs */
29	switch (rate) {
30	case 96000:
31		mclk = 256 * rate;
32		break;
33	default:
34		mclk = 512 * rate;
35		break;
36	}
37
38	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
39	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
40	if (ret) {
41		dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
42			mclk / 1000000, mclk / 1000 % 1000);
43		return ret;
44	}
45
46	/* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
47	ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
48	if (ret) {
49		dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
50			mclk / 1000000, mclk / 1000 % 1000);
51		return ret;
52	}
53
54	return 0;
55}
56
57static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
58	.hw_params = mxs_sgtl5000_hw_params,
59};
60
61#define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
62	SND_SOC_DAIFMT_CBS_CFS)
63
64
65SND_SOC_DAILINK_DEFS(hifi_tx,
66	DAILINK_COMP_ARRAY(COMP_EMPTY()),
67	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
68	DAILINK_COMP_ARRAY(COMP_EMPTY()));
69
70SND_SOC_DAILINK_DEFS(hifi_rx,
71	DAILINK_COMP_ARRAY(COMP_EMPTY()),
72	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
73	DAILINK_COMP_ARRAY(COMP_EMPTY()));
74
75static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
76	{
77		.name		= "HiFi Tx",
78		.stream_name	= "HiFi Playback",
79		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
80		.ops		= &mxs_sgtl5000_hifi_ops,
81		.playback_only	= true,
82		SND_SOC_DAILINK_REG(hifi_tx),
83	}, {
84		.name		= "HiFi Rx",
85		.stream_name	= "HiFi Capture",
86		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
87		.ops		= &mxs_sgtl5000_hifi_ops,
88		.capture_only	= true,
89		SND_SOC_DAILINK_REG(hifi_rx),
90	},
91};
92
93static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = {
94	SND_SOC_DAPM_MIC("Mic Jack", NULL),
95	SND_SOC_DAPM_LINE("Line In Jack", NULL),
96	SND_SOC_DAPM_HP("Headphone Jack", NULL),
97	SND_SOC_DAPM_SPK("Line Out Jack", NULL),
98	SND_SOC_DAPM_SPK("Ext Spk", NULL),
99};
100
101static struct snd_soc_card mxs_sgtl5000 = {
102	.name		= "mxs_sgtl5000",
103	.owner		= THIS_MODULE,
104	.dai_link	= mxs_sgtl5000_dai,
105	.num_links	= ARRAY_SIZE(mxs_sgtl5000_dai),
106};
107
108static int mxs_sgtl5000_probe(struct platform_device *pdev)
109{
110	struct snd_soc_card *card = &mxs_sgtl5000;
111	int ret, i;
112	struct device_node *np = pdev->dev.of_node;
113	struct device_node *saif_np[2], *codec_np;
114
115	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
116	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
117	codec_np = of_parse_phandle(np, "audio-codec", 0);
118	if (!saif_np[0] || !saif_np[1] || !codec_np) {
119		dev_err(&pdev->dev, "phandle missing or invalid\n");
120		of_node_put(codec_np);
121		of_node_put(saif_np[0]);
122		of_node_put(saif_np[1]);
123		return -EINVAL;
124	}
125
126	for (i = 0; i < 2; i++) {
127		mxs_sgtl5000_dai[i].codecs->name = NULL;
128		mxs_sgtl5000_dai[i].codecs->of_node = codec_np;
129		mxs_sgtl5000_dai[i].cpus->dai_name = NULL;
130		mxs_sgtl5000_dai[i].cpus->of_node = saif_np[i];
131		mxs_sgtl5000_dai[i].platforms->name = NULL;
132		mxs_sgtl5000_dai[i].platforms->of_node = saif_np[i];
133	}
134
135	of_node_put(codec_np);
136	of_node_put(saif_np[0]);
137	of_node_put(saif_np[1]);
138
139	/*
140	 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
141	 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
142	 * should be >= 8MHz and <= 27M.
143	 */
144	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
145	if (ret) {
146		dev_err(&pdev->dev, "failed to get mclk\n");
147		return ret;
148	}
149
150	card->dev = &pdev->dev;
151
152	if (of_property_present(np, "audio-routing")) {
153		card->dapm_widgets = mxs_sgtl5000_dapm_widgets;
154		card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets);
155
156		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
157		if (ret) {
158			dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n",
159				ret);
160			return ret;
161		}
162	}
163
164	ret = devm_snd_soc_register_card(&pdev->dev, card);
165	if (ret)
166		return dev_err_probe(&pdev->dev, ret, "snd_soc_register_card failed\n");
167
168	return 0;
169}
170
171static void mxs_sgtl5000_remove(struct platform_device *pdev)
172{
173	mxs_saif_put_mclk(0);
174}
175
176static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
177	{ .compatible = "fsl,mxs-audio-sgtl5000", },
178	{ /* sentinel */ }
179};
180MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);
181
182static struct platform_driver mxs_sgtl5000_audio_driver = {
183	.driver = {
184		.name = "mxs-sgtl5000",
185		.of_match_table = mxs_sgtl5000_dt_ids,
186	},
187	.probe = mxs_sgtl5000_probe,
188	.remove_new = mxs_sgtl5000_remove,
189};
190
191module_platform_driver(mxs_sgtl5000_audio_driver);
192
193MODULE_AUTHOR("Freescale Semiconductor, Inc.");
194MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
195MODULE_LICENSE("GPL");
196MODULE_ALIAS("platform:mxs-sgtl5000");
197