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Linux/sound/soc/tegra/tegra_sgtl5000.c

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  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 
 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 
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_probe(&pdev->dev, ret,
159                               "snd_soc_register_card failed\n");
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 
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 

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