1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * tegra_sgtl5000.c - Tegra machine ASoC driver for boards using SGTL5000 codec
4 *
5 * Author: Marcel Ziswiler <marcel@ziswiler.com>
6 *
7 * Based on code copyright/by:
8 *
9 * Copyright (C) 2010-2012 - NVIDIA, Inc.
10 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
11 * Copyright 2007 Wolfson Microelectronics PLC.
12 */
13
14 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <linux/slab.h>
17 #include <linux/gpio.h>
18 #include <linux/of_gpio.h>
19
20 #include <sound/core.h>
21 #include <sound/pcm.h>
22 #include <sound/pcm_params.h>
23 #include <sound/soc.h>
24
25 #include "../codecs/sgtl5000.h"
26
27 #include "tegra_asoc_utils.h"
28
29 #define DRV_NAME "tegra-snd-sgtl5000"
30
31 struct tegra_sgtl5000 {
32 struct tegra_asoc_utils_data util_data;
33 };
34
tegra_sgtl5000_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)35 static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream,
36 struct snd_pcm_hw_params *params)
37 {
38 struct snd_soc_pcm_runtime *rtd = substream->private_data;
39 struct snd_soc_dai *codec_dai = rtd->codec_dai;
40 struct snd_soc_card *card = rtd->card;
41 struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
42 int srate, mclk;
43 int err;
44
45 srate = params_rate(params);
46 switch (srate) {
47 case 11025:
48 case 22050:
49 case 44100:
50 case 88200:
51 mclk = 11289600;
52 break;
53 default:
54 mclk = 12288000;
55 break;
56 }
57
58 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
59 if (err < 0) {
60 dev_err(card->dev, "Can't configure clocks\n");
61 return err;
62 }
63
64 err = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, mclk,
65 SND_SOC_CLOCK_IN);
66 if (err < 0) {
67 dev_err(card->dev, "codec_dai clock not set\n");
68 return err;
69 }
70
71 return 0;
72 }
73
74 static const struct snd_soc_ops tegra_sgtl5000_ops = {
75 .hw_params = tegra_sgtl5000_hw_params,
76 };
77
78 static const struct snd_soc_dapm_widget tegra_sgtl5000_dapm_widgets[] = {
79 SND_SOC_DAPM_HP("Headphone Jack", NULL),
80 SND_SOC_DAPM_LINE("Line In Jack", NULL),
81 SND_SOC_DAPM_MIC("Mic Jack", NULL),
82 };
83
84 SND_SOC_DAILINK_DEFS(hifi,
85 DAILINK_COMP_ARRAY(COMP_EMPTY()),
86 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "sgtl5000")),
87 DAILINK_COMP_ARRAY(COMP_EMPTY()));
88
89 static struct snd_soc_dai_link tegra_sgtl5000_dai = {
90 .name = "sgtl5000",
91 .stream_name = "HiFi",
92 .ops = &tegra_sgtl5000_ops,
93 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
94 SND_SOC_DAIFMT_CBS_CFS,
95 SND_SOC_DAILINK_REG(hifi),
96 };
97
98 static struct snd_soc_card snd_soc_tegra_sgtl5000 = {
99 .name = "tegra-sgtl5000",
100 .owner = THIS_MODULE,
101 .dai_link = &tegra_sgtl5000_dai,
102 .num_links = 1,
103 .dapm_widgets = tegra_sgtl5000_dapm_widgets,
104 .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
105 .fully_routed = true,
106 };
107
tegra_sgtl5000_driver_probe(struct platform_device * pdev)108 static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
109 {
110 struct device_node *np = pdev->dev.of_node;
111 struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
112 struct tegra_sgtl5000 *machine;
113 int ret;
114
115 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
116 GFP_KERNEL);
117 if (!machine)
118 return -ENOMEM;
119
120 card->dev = &pdev->dev;
121 snd_soc_card_set_drvdata(card, machine);
122
123 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
124 if (ret)
125 goto err;
126
127 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
128 if (ret)
129 goto err;
130
131 tegra_sgtl5000_dai.codecs->of_node = of_parse_phandle(np,
132 "nvidia,audio-codec", 0);
133 if (!tegra_sgtl5000_dai.codecs->of_node) {
134 dev_err(&pdev->dev,
135 "Property 'nvidia,audio-codec' missing or invalid\n");
136 ret = -EINVAL;
137 goto err;
138 }
139
140 tegra_sgtl5000_dai.cpus->of_node = of_parse_phandle(np,
141 "nvidia,i2s-controller", 0);
142 if (!tegra_sgtl5000_dai.cpus->of_node) {
143 dev_err(&pdev->dev,
144 "Property 'nvidia,i2s-controller' missing/invalid\n");
145 ret = -EINVAL;
146 goto err_put_codec_of_node;
147 }
148
149 tegra_sgtl5000_dai.platforms->of_node = tegra_sgtl5000_dai.cpus->of_node;
150
151 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
152 if (ret)
153 goto err_put_cpu_of_node;
154
155 ret = snd_soc_register_card(card);
156 if (ret) {
157 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
158 ret);
159 goto err_fini_utils;
160 }
161
162 return 0;
163
164 err_fini_utils:
165 tegra_asoc_utils_fini(&machine->util_data);
166 err_put_cpu_of_node:
167 of_node_put(tegra_sgtl5000_dai.cpus->of_node);
168 tegra_sgtl5000_dai.cpus->of_node = NULL;
169 tegra_sgtl5000_dai.platforms->of_node = NULL;
170 err_put_codec_of_node:
171 of_node_put(tegra_sgtl5000_dai.codecs->of_node);
172 tegra_sgtl5000_dai.codecs->of_node = NULL;
173 err:
174 return ret;
175 }
176
tegra_sgtl5000_driver_remove(struct platform_device * pdev)177 static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
178 {
179 struct snd_soc_card *card = platform_get_drvdata(pdev);
180 struct tegra_sgtl5000 *machine = snd_soc_card_get_drvdata(card);
181 int ret;
182
183 ret = snd_soc_unregister_card(card);
184
185 tegra_asoc_utils_fini(&machine->util_data);
186
187 of_node_put(tegra_sgtl5000_dai.cpus->of_node);
188 tegra_sgtl5000_dai.cpus->of_node = NULL;
189 tegra_sgtl5000_dai.platforms->of_node = NULL;
190 of_node_put(tegra_sgtl5000_dai.codecs->of_node);
191 tegra_sgtl5000_dai.codecs->of_node = NULL;
192
193 return ret;
194 }
195
196 static const struct of_device_id tegra_sgtl5000_of_match[] = {
197 { .compatible = "nvidia,tegra-audio-sgtl5000", },
198 { /* sentinel */ },
199 };
200
201 static struct platform_driver tegra_sgtl5000_driver = {
202 .driver = {
203 .name = DRV_NAME,
204 .pm = &snd_soc_pm_ops,
205 .of_match_table = tegra_sgtl5000_of_match,
206 },
207 .probe = tegra_sgtl5000_driver_probe,
208 .remove = tegra_sgtl5000_driver_remove,
209 };
210 module_platform_driver(tegra_sgtl5000_driver);
211
212 MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
213 MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
214 MODULE_LICENSE("GPL v2");
215 MODULE_ALIAS("platform:" DRV_NAME);
216 MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);
217
