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Linux/sound/soc/tegra/tegra_max98090.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * Tegra machine ASoC driver for boards using a MAX90809 CODEC.
  4  *
  5  * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
  6  *
  7  * Based on code copyright/by:
  8  *
  9  * Copyright (C) 2010-2012 - NVIDIA, Inc.
 10  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
 11  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 12  * Copyright 2007 Wolfson Microelectronics PLC.
 13  */
 14 
 15 #include <linux/module.h>
 16 #include <linux/platform_device.h>
 17 #include <linux/slab.h>
 18 #include <linux/gpio.h>
 19 #include <linux/of_gpio.h>
 20 
 21 #include <sound/core.h>
 22 #include <sound/jack.h>
 23 #include <sound/pcm.h>
 24 #include <sound/pcm_params.h>
 25 #include <sound/soc.h>
 26 
 27 #include "tegra_asoc_utils.h"
 28 
 29 #define DRV_NAME "tegra-snd-max98090"
 30 
 31 struct tegra_max98090 {
 32         struct tegra_asoc_utils_data util_data;
 33         int gpio_hp_det;
 34         int gpio_mic_det;
 35 };
 36 
 37 static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
 38                                         struct snd_pcm_hw_params *params)
 39 {
 40         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 41         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 42         struct snd_soc_card *card = rtd->card;
 43         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
 44         int srate, mclk;
 45         int err;
 46 
 47         srate = params_rate(params);
 48         switch (srate) {
 49         case 8000:
 50         case 16000:
 51         case 24000:
 52         case 32000:
 53         case 48000:
 54         case 64000:
 55         case 96000:
 56                 mclk = 12288000;
 57                 break;
 58         case 11025:
 59         case 22050:
 60         case 44100:
 61         case 88200:
 62                 mclk = 11289600;
 63                 break;
 64         default:
 65                 mclk = 12000000;
 66                 break;
 67         }
 68 
 69         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
 70         if (err < 0) {
 71                 dev_err(card->dev, "Can't configure clocks\n");
 72                 return err;
 73         }
 74 
 75         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 76                                         SND_SOC_CLOCK_IN);
 77         if (err < 0) {
 78                 dev_err(card->dev, "codec_dai clock not set\n");
 79                 return err;
 80         }
 81 
 82         return 0;
 83 }
 84 
 85 static const struct snd_soc_ops tegra_max98090_ops = {
 86         .hw_params = tegra_max98090_asoc_hw_params,
 87 };
 88 
 89 static struct snd_soc_jack tegra_max98090_hp_jack;
 90 
 91 static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
 92         {
 93                 .pin = "Headphones",
 94                 .mask = SND_JACK_HEADPHONE,
 95         },
 96 };
 97 
 98 static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
 99         .name = "Headphone detection",
100         .report = SND_JACK_HEADPHONE,
101         .debounce_time = 150,
102         .invert = 1,
103 };
104 
105 static struct snd_soc_jack tegra_max98090_mic_jack;
106 
107 static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
108         {
109                 .pin = "Mic Jack",
110                 .mask = SND_JACK_MICROPHONE,
111         },
112 };
113 
114 static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
115         .name = "Mic detection",
116         .report = SND_JACK_MICROPHONE,
117         .debounce_time = 150,
118         .invert = 1,
119 };
120 
121 static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
122         SND_SOC_DAPM_HP("Headphones", NULL),
123         SND_SOC_DAPM_SPK("Speakers", NULL),
124         SND_SOC_DAPM_MIC("Mic Jack", NULL),
125         SND_SOC_DAPM_MIC("Int Mic", NULL),
126 };
127 
128 static const struct snd_kcontrol_new tegra_max98090_controls[] = {
129         SOC_DAPM_PIN_SWITCH("Headphones"),
130         SOC_DAPM_PIN_SWITCH("Speakers"),
131         SOC_DAPM_PIN_SWITCH("Mic Jack"),
132         SOC_DAPM_PIN_SWITCH("Int Mic"),
133 };
134 
135 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
136 {
137         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
138 
139         if (gpio_is_valid(machine->gpio_hp_det)) {
140                 snd_soc_card_jack_new(rtd->card, "Headphones",
141                                       SND_JACK_HEADPHONE,
142                                       &tegra_max98090_hp_jack,
143                                       tegra_max98090_hp_jack_pins,
144                                       ARRAY_SIZE(tegra_max98090_hp_jack_pins));
145 
146                 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
147                 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
148                                         1,
149                                         &tegra_max98090_hp_jack_gpio);
150         }
151 
152         if (gpio_is_valid(machine->gpio_mic_det)) {
153                 snd_soc_card_jack_new(rtd->card, "Mic Jack",
154                                       SND_JACK_MICROPHONE,
155                                       &tegra_max98090_mic_jack,
156                                       tegra_max98090_mic_jack_pins,
157                                       ARRAY_SIZE(tegra_max98090_mic_jack_pins));
158 
159                 tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
160                 snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
161                                        1,
162                                        &tegra_max98090_mic_jack_gpio);
163         }
164 
165         return 0;
166 }
167 
168 SND_SOC_DAILINK_DEFS(pcm,
169         DAILINK_COMP_ARRAY(COMP_EMPTY()),
170         DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")),
171         DAILINK_COMP_ARRAY(COMP_EMPTY()));
172 
173 static struct snd_soc_dai_link tegra_max98090_dai = {
174         .name = "max98090",
175         .stream_name = "max98090 PCM",
176         .init = tegra_max98090_asoc_init,
177         .ops = &tegra_max98090_ops,
178         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
179                         SND_SOC_DAIFMT_CBS_CFS,
180         SND_SOC_DAILINK_REG(pcm),
181 };
182 
183 static struct snd_soc_card snd_soc_tegra_max98090 = {
184         .name = "tegra-max98090",
185         .owner = THIS_MODULE,
186         .dai_link = &tegra_max98090_dai,
187         .num_links = 1,
188         .controls = tegra_max98090_controls,
189         .num_controls = ARRAY_SIZE(tegra_max98090_controls),
190         .dapm_widgets = tegra_max98090_dapm_widgets,
191         .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
192         .fully_routed = true,
193 };
194 
195 static int tegra_max98090_probe(struct platform_device *pdev)
196 {
197         struct device_node *np = pdev->dev.of_node;
198         struct snd_soc_card *card = &snd_soc_tegra_max98090;
199         struct tegra_max98090 *machine;
200         int ret;
201 
202         machine = devm_kzalloc(&pdev->dev,
203                         sizeof(struct tegra_max98090), GFP_KERNEL);
204         if (!machine)
205                 return -ENOMEM;
206 
207         card->dev = &pdev->dev;
208         snd_soc_card_set_drvdata(card, machine);
209 
210         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
211         if (machine->gpio_hp_det == -EPROBE_DEFER)
212                 return -EPROBE_DEFER;
213 
214         machine->gpio_mic_det =
215                         of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
216         if (machine->gpio_mic_det == -EPROBE_DEFER)
217                 return -EPROBE_DEFER;
218 
219         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
220         if (ret)
221                 goto err;
222 
223         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
224         if (ret)
225                 goto err;
226 
227         tegra_max98090_dai.codecs->of_node = of_parse_phandle(np,
228                         "nvidia,audio-codec", 0);
229         if (!tegra_max98090_dai.codecs->of_node) {
230                 dev_err(&pdev->dev,
231                         "Property 'nvidia,audio-codec' missing or invalid\n");
232                 ret = -EINVAL;
233                 goto err;
234         }
235 
236         tegra_max98090_dai.cpus->of_node = of_parse_phandle(np,
237                         "nvidia,i2s-controller", 0);
238         if (!tegra_max98090_dai.cpus->of_node) {
239                 dev_err(&pdev->dev,
240                         "Property 'nvidia,i2s-controller' missing or invalid\n");
241                 ret = -EINVAL;
242                 goto err;
243         }
244 
245         tegra_max98090_dai.platforms->of_node = tegra_max98090_dai.cpus->of_node;
246 
247         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
248         if (ret)
249                 goto err;
250 
251         ret = snd_soc_register_card(card);
252         if (ret) {
253                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
254                         ret);
255                 goto err_fini_utils;
256         }
257 
258         return 0;
259 
260 err_fini_utils:
261         tegra_asoc_utils_fini(&machine->util_data);
262 err:
263         return ret;
264 }
265 
266 static int tegra_max98090_remove(struct platform_device *pdev)
267 {
268         struct snd_soc_card *card = platform_get_drvdata(pdev);
269         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
270 
271         snd_soc_unregister_card(card);
272 
273         tegra_asoc_utils_fini(&machine->util_data);
274 
275         return 0;
276 }
277 
278 static const struct of_device_id tegra_max98090_of_match[] = {
279         { .compatible = "nvidia,tegra-audio-max98090", },
280         {},
281 };
282 
283 static struct platform_driver tegra_max98090_driver = {
284         .driver = {
285                 .name = DRV_NAME,
286                 .pm = &snd_soc_pm_ops,
287                 .of_match_table = tegra_max98090_of_match,
288         },
289         .probe = tegra_max98090_probe,
290         .remove = tegra_max98090_remove,
291 };
292 module_platform_driver(tegra_max98090_driver);
293 
294 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
295 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
296 MODULE_LICENSE("GPL v2");
297 MODULE_ALIAS("platform:" DRV_NAME);
298 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
299 

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