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 = asoc_substream_to_rtd(substream);
39 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
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 .driver_name = "tegra",
101 .owner = THIS_MODULE,
102 .dai_link = &tegra_sgtl5000_dai,
103 .num_links = 1,
104 .dapm_widgets = tegra_sgtl5000_dapm_widgets,
105 .num_dapm_widgets = ARRAY_SIZE(tegra_sgtl5000_dapm_widgets),
106 .fully_routed = true,
107 };
108
tegra_sgtl5000_driver_probe(struct platform_device * pdev)109 static int tegra_sgtl5000_driver_probe(struct platform_device *pdev)
110 {
111 struct device_node *np = pdev->dev.of_node;
112 struct snd_soc_card *card = &snd_soc_tegra_sgtl5000;
113 struct tegra_sgtl5000 *machine;
114 int ret;
115
116 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_sgtl5000),
117 GFP_KERNEL);
118 if (!machine)
119 return -ENOMEM;
120
121 card->dev = &pdev->dev;
122 snd_soc_card_set_drvdata(card, machine);
123
124 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
125 if (ret)
126 goto err;
127
128 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
129 if (ret)
130 goto err;
131
132 tegra_sgtl5000_dai.codecs->of_node = of_parse_phandle(np,
133 "nvidia,audio-codec", 0);
134 if (!tegra_sgtl5000_dai.codecs->of_node) {
135 dev_err(&pdev->dev,
136 "Property 'nvidia,audio-codec' missing or invalid\n");
137 ret = -EINVAL;
138 goto err;
139 }
140
141 tegra_sgtl5000_dai.cpus->of_node = of_parse_phandle(np,
142 "nvidia,i2s-controller", 0);
143 if (!tegra_sgtl5000_dai.cpus->of_node) {
144 dev_err(&pdev->dev,
145 "Property 'nvidia,i2s-controller' missing/invalid\n");
146 ret = -EINVAL;
147 goto err_put_codec_of_node;
148 }
149
150 tegra_sgtl5000_dai.platforms->of_node = tegra_sgtl5000_dai.cpus->of_node;
151
152 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
153 if (ret)
154 goto err_put_cpu_of_node;
155
156 ret = snd_soc_register_card(card);
157 if (ret) {
158 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
159 ret);
160 goto err_put_cpu_of_node;
161 }
162
163 return 0;
164
165 err_put_cpu_of_node:
166 of_node_put(tegra_sgtl5000_dai.cpus->of_node);
167 tegra_sgtl5000_dai.cpus->of_node = NULL;
168 tegra_sgtl5000_dai.platforms->of_node = NULL;
169 err_put_codec_of_node:
170 of_node_put(tegra_sgtl5000_dai.codecs->of_node);
171 tegra_sgtl5000_dai.codecs->of_node = NULL;
172 err:
173 return ret;
174 }
175
tegra_sgtl5000_driver_remove(struct platform_device * pdev)176 static int tegra_sgtl5000_driver_remove(struct platform_device *pdev)
177 {
178 struct snd_soc_card *card = platform_get_drvdata(pdev);
179 int ret;
180
181 ret = snd_soc_unregister_card(card);
182
183 of_node_put(tegra_sgtl5000_dai.cpus->of_node);
184 tegra_sgtl5000_dai.cpus->of_node = NULL;
185 tegra_sgtl5000_dai.platforms->of_node = NULL;
186 of_node_put(tegra_sgtl5000_dai.codecs->of_node);
187 tegra_sgtl5000_dai.codecs->of_node = NULL;
188
189 return ret;
190 }
191
192 static const struct of_device_id tegra_sgtl5000_of_match[] = {
193 { .compatible = "nvidia,tegra-audio-sgtl5000", },
194 { /* sentinel */ },
195 };
196
197 static struct platform_driver tegra_sgtl5000_driver = {
198 .driver = {
199 .name = DRV_NAME,
200 .pm = &snd_soc_pm_ops,
201 .of_match_table = tegra_sgtl5000_of_match,
202 },
203 .probe = tegra_sgtl5000_driver_probe,
204 .remove = tegra_sgtl5000_driver_remove,
205 };
206 module_platform_driver(tegra_sgtl5000_driver);
207
208 MODULE_AUTHOR("Marcel Ziswiler <marcel@ziswiler.com>");
209 MODULE_DESCRIPTION("Tegra SGTL5000 machine ASoC driver");
210 MODULE_LICENSE("GPL v2");
211 MODULE_ALIAS("platform:" DRV_NAME);
212 MODULE_DEVICE_TABLE(of, tegra_sgtl5000_of_match);
213