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(p: 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(dai: codec_dai, SGTL5000_SYSCLK, freq: mclk, dir: 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(dai: cpu_dai, MXS_SAIF_MCLK, freq: mclk, dir: 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_CBC_CFC)
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, phandle_name: "saif-controllers", index: 0);
116 saif_np[1] = of_parse_phandle(np, phandle_name: "saif-controllers", index: 1);
117 codec_np = of_parse_phandle(np, phandle_name: "audio-codec", index: 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(node: codec_np);
121 of_node_put(node: saif_np[0]);
122 of_node_put(node: 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(node: codec_np);
136 of_node_put(node: saif_np[0]);
137 of_node_put(node: 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(saif_id: 0, mclk: 44100 * 256, rate: 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, propname: "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, propname: "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(dev: &pdev->dev, card);
165 if (ret)
166 return dev_err_probe(dev: &pdev->dev, err: ret, fmt: "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(saif_id: 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 = 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

source code of linux/sound/soc/mxs/mxs-sgtl5000.c