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 <linux/of_device.h>
10#include <sound/core.h>
11#include <sound/pcm.h>
12#include <sound/soc.h>
13#include <sound/jack.h>
14#include <sound/soc-dapm.h>
15
16#include "../codecs/sgtl5000.h"
17#include "mxs-saif.h"
18
19static int mxs_sgtl5000_hw_params(struct snd_pcm_substream *substream,
20	struct snd_pcm_hw_params *params)
21{
22	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
23	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
24	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
25	unsigned int rate = params_rate(params);
26	u32 mclk;
27	int ret;
28
29	/* sgtl5000 does not support 512*rate when in 96000 fs */
30	switch (rate) {
31	case 96000:
32		mclk = 256 * rate;
33		break;
34	default:
35		mclk = 512 * rate;
36		break;
37	}
38
39	/* Set SGTL5000's SYSCLK (provided by SAIF MCLK) */
40	ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk, 0);
41	if (ret) {
42		dev_err(codec_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
43			mclk / 1000000, mclk / 1000 % 1000);
44		return ret;
45	}
46
47	/* The SAIF MCLK should be the same as SGTL5000_SYSCLK */
48	ret = snd_soc_dai_set_sysclk(cpu_dai, MXS_SAIF_MCLK, mclk, 0);
49	if (ret) {
50		dev_err(cpu_dai->dev, "Failed to set sysclk to %u.%03uMHz\n",
51			mclk / 1000000, mclk / 1000 % 1000);
52		return ret;
53	}
54
55	return 0;
56}
57
58static const struct snd_soc_ops mxs_sgtl5000_hifi_ops = {
59	.hw_params = mxs_sgtl5000_hw_params,
60};
61
62#define MXS_SGTL5000_DAI_FMT (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | \
63	SND_SOC_DAIFMT_CBS_CFS)
64
65
66SND_SOC_DAILINK_DEFS(hifi_tx,
67	DAILINK_COMP_ARRAY(COMP_EMPTY()),
68	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
69	DAILINK_COMP_ARRAY(COMP_EMPTY()));
70
71SND_SOC_DAILINK_DEFS(hifi_rx,
72	DAILINK_COMP_ARRAY(COMP_EMPTY()),
73	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
74	DAILINK_COMP_ARRAY(COMP_EMPTY()));
75
76static struct snd_soc_dai_link mxs_sgtl5000_dai[] = {
77	{
78		.name		= "HiFi Tx",
79		.stream_name	= "HiFi Playback",
80		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
81		.ops		= &mxs_sgtl5000_hifi_ops,
82		.playback_only	= true,
83		SND_SOC_DAILINK_REG(hifi_tx),
84	}, {
85		.name		= "HiFi Rx",
86		.stream_name	= "HiFi Capture",
87		.dai_fmt	= MXS_SGTL5000_DAI_FMT,
88		.ops		= &mxs_sgtl5000_hifi_ops,
89		.capture_only	= true,
90		SND_SOC_DAILINK_REG(hifi_rx),
91	},
92};
93
94static const struct snd_soc_dapm_widget mxs_sgtl5000_dapm_widgets[] = {
95	SND_SOC_DAPM_MIC("Mic Jack", NULL),
96	SND_SOC_DAPM_LINE("Line In Jack", NULL),
97	SND_SOC_DAPM_HP("Headphone Jack", NULL),
98	SND_SOC_DAPM_SPK("Line Out Jack", NULL),
99	SND_SOC_DAPM_SPK("Ext Spk", NULL),
100};
101
102static struct snd_soc_card mxs_sgtl5000 = {
103	.name		= "mxs_sgtl5000",
104	.owner		= THIS_MODULE,
105	.dai_link	= mxs_sgtl5000_dai,
106	.num_links	= ARRAY_SIZE(mxs_sgtl5000_dai),
107};
108
109static int mxs_sgtl5000_probe(struct platform_device *pdev)
110{
111	struct snd_soc_card *card = &mxs_sgtl5000;
112	int ret, i;
113	struct device_node *np = pdev->dev.of_node;
114	struct device_node *saif_np[2], *codec_np;
115
116	saif_np[0] = of_parse_phandle(np, "saif-controllers", 0);
117	saif_np[1] = of_parse_phandle(np, "saif-controllers", 1);
118	codec_np = of_parse_phandle(np, "audio-codec", 0);
119	if (!saif_np[0] || !saif_np[1] || !codec_np) {
120		dev_err(&pdev->dev, "phandle missing or invalid\n");
121		of_node_put(codec_np);
122		of_node_put(saif_np[0]);
123		of_node_put(saif_np[1]);
124		return -EINVAL;
125	}
126
127	for (i = 0; i < 2; i++) {
128		mxs_sgtl5000_dai[i].codecs->name = NULL;
129		mxs_sgtl5000_dai[i].codecs->of_node = codec_np;
130		mxs_sgtl5000_dai[i].cpus->dai_name = NULL;
131		mxs_sgtl5000_dai[i].cpus->of_node = saif_np[i];
132		mxs_sgtl5000_dai[i].platforms->name = NULL;
133		mxs_sgtl5000_dai[i].platforms->of_node = saif_np[i];
134	}
135
136	of_node_put(codec_np);
137	of_node_put(saif_np[0]);
138	of_node_put(saif_np[1]);
139
140	/*
141	 * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w).
142	 * The Sgtl5000 sysclk is derived from saif0 mclk and it's range
143	 * should be >= 8MHz and <= 27M.
144	 */
145	ret = mxs_saif_get_mclk(0, 44100 * 256, 44100);
146	if (ret) {
147		dev_err(&pdev->dev, "failed to get mclk\n");
148		return ret;
149	}
150
151	card->dev = &pdev->dev;
152
153	if (of_find_property(np, "audio-routing", NULL)) {
154		card->dapm_widgets = mxs_sgtl5000_dapm_widgets;
155		card->num_dapm_widgets = ARRAY_SIZE(mxs_sgtl5000_dapm_widgets);
156
157		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
158		if (ret) {
159			dev_err(&pdev->dev, "failed to parse audio-routing (%d)\n",
160				ret);
161			return ret;
162		}
163	}
164
165	ret = devm_snd_soc_register_card(&pdev->dev, card);
166	if (ret) {
167		if (ret != -EPROBE_DEFER)
168			dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
169				ret);
170		return ret;
171	}
172
173	return 0;
174}
175
176static int mxs_sgtl5000_remove(struct platform_device *pdev)
177{
178	mxs_saif_put_mclk(0);
179
180	return 0;
181}
182
183static const struct of_device_id mxs_sgtl5000_dt_ids[] = {
184	{ .compatible = "fsl,mxs-audio-sgtl5000", },
185	{ /* sentinel */ }
186};
187MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids);
188
189static struct platform_driver mxs_sgtl5000_audio_driver = {
190	.driver = {
191		.name = "mxs-sgtl5000",
192		.of_match_table = mxs_sgtl5000_dt_ids,
193	},
194	.probe = mxs_sgtl5000_probe,
195	.remove = mxs_sgtl5000_remove,
196};
197
198module_platform_driver(mxs_sgtl5000_audio_driver);
199
200MODULE_AUTHOR("Freescale Semiconductor, Inc.");
201MODULE_DESCRIPTION("MXS ALSA SoC Machine driver");
202MODULE_LICENSE("GPL");
203MODULE_ALIAS("platform:mxs-sgtl5000");
204