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Linux/sound/soc/tegra/tegra_alc5632.c

  1 /*
  2 * tegra_alc5632.c  --  Toshiba AC100(PAZ00) machine ASoC driver
  3  *
  4  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  5  * Copyright (C) 2012 - NVIDIA, Inc.
  6  *
  7  * Authors:  Leon Romanovsky <leon@leon.nu>
  8  *           Andrey Danin <danindrey@mail.ru>
  9  *           Marc Dietrich <marvin24@gmx.de>
 10  *
 11  * This program is free software; you can redistribute it and/or modify
 12  * it under the terms of the GNU General Public License version 2 as
 13  * published by the Free Software Foundation.
 14  */
 15 
 16 #include <linux/module.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/slab.h>
 19 #include <linux/gpio.h>
 20 #include <linux/of_gpio.h>
 21 
 22 #include <sound/core.h>
 23 #include <sound/jack.h>
 24 #include <sound/pcm.h>
 25 #include <sound/pcm_params.h>
 26 #include <sound/soc.h>
 27 
 28 #include "../codecs/alc5632.h"
 29 
 30 #include "tegra_asoc_utils.h"
 31 
 32 #define DRV_NAME "tegra-alc5632"
 33 
 34 struct tegra_alc5632 {
 35         struct tegra_asoc_utils_data util_data;
 36         int gpio_hp_det;
 37 };
 38 
 39 static int tegra_alc5632_asoc_hw_params(struct snd_pcm_substream *substream,
 40                                         struct snd_pcm_hw_params *params)
 41 {
 42         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 44         struct snd_soc_codec *codec = codec_dai->codec;
 45         struct snd_soc_card *card = codec->card;
 46         struct tegra_alc5632 *alc5632 = snd_soc_card_get_drvdata(card);
 47         int srate, mclk;
 48         int err;
 49 
 50         srate = params_rate(params);
 51         mclk = 512 * srate;
 52 
 53         err = tegra_asoc_utils_set_rate(&alc5632->util_data, srate, mclk);
 54         if (err < 0) {
 55                 dev_err(card->dev, "Can't configure clocks\n");
 56                 return err;
 57         }
 58 
 59         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 60                                         SND_SOC_CLOCK_IN);
 61         if (err < 0) {
 62                 dev_err(card->dev, "codec_dai clock not set\n");
 63                 return err;
 64         }
 65 
 66         return 0;
 67 }
 68 
 69 static struct snd_soc_ops tegra_alc5632_asoc_ops = {
 70         .hw_params = tegra_alc5632_asoc_hw_params,
 71 };
 72 
 73 static struct snd_soc_jack tegra_alc5632_hs_jack;
 74 
 75 static struct snd_soc_jack_pin tegra_alc5632_hs_jack_pins[] = {
 76         {
 77                 .pin = "Headset Mic",
 78                 .mask = SND_JACK_MICROPHONE,
 79         },
 80         {
 81                 .pin = "Headset Stereophone",
 82                 .mask = SND_JACK_HEADPHONE,
 83         },
 84 };
 85 
 86 static struct snd_soc_jack_gpio tegra_alc5632_hp_jack_gpio = {
 87         .name = "Headset detection",
 88         .report = SND_JACK_HEADSET,
 89         .debounce_time = 150,
 90 };
 91 
 92 static const struct snd_soc_dapm_widget tegra_alc5632_dapm_widgets[] = {
 93         SND_SOC_DAPM_SPK("Int Spk", NULL),
 94         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
 95         SND_SOC_DAPM_MIC("Headset Mic", NULL),
 96         SND_SOC_DAPM_MIC("Digital Mic", NULL),
 97 };
 98 
 99 static const struct snd_kcontrol_new tegra_alc5632_controls[] = {
100         SOC_DAPM_PIN_SWITCH("Int Spk"),
101 };
102 
103 static int tegra_alc5632_asoc_init(struct snd_soc_pcm_runtime *rtd)
104 {
105         struct snd_soc_dai *codec_dai = rtd->codec_dai;
106         struct snd_soc_codec *codec = codec_dai->codec;
107         struct snd_soc_dapm_context *dapm = &codec->dapm;
108         struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(codec->card);
109 
110         snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
111                          &tegra_alc5632_hs_jack);
112         snd_soc_jack_add_pins(&tegra_alc5632_hs_jack,
113                         ARRAY_SIZE(tegra_alc5632_hs_jack_pins),
114                         tegra_alc5632_hs_jack_pins);
115 
116         if (gpio_is_valid(machine->gpio_hp_det)) {
117                 tegra_alc5632_hp_jack_gpio.gpio = machine->gpio_hp_det;
118                 snd_soc_jack_add_gpios(&tegra_alc5632_hs_jack,
119                                                 1,
120                                                 &tegra_alc5632_hp_jack_gpio);
121         }
122 
123         snd_soc_dapm_force_enable_pin(dapm, "MICBIAS1");
124 
125         return 0;
126 }
127 
128 static struct snd_soc_dai_link tegra_alc5632_dai = {
129         .name = "ALC5632",
130         .stream_name = "ALC5632 PCM",
131         .codec_dai_name = "alc5632-hifi",
132         .init = tegra_alc5632_asoc_init,
133         .ops = &tegra_alc5632_asoc_ops,
134         .dai_fmt = SND_SOC_DAIFMT_I2S
135                            | SND_SOC_DAIFMT_NB_NF
136                            | SND_SOC_DAIFMT_CBS_CFS,
137 };
138 
139 static struct snd_soc_card snd_soc_tegra_alc5632 = {
140         .name = "tegra-alc5632",
141         .owner = THIS_MODULE,
142         .dai_link = &tegra_alc5632_dai,
143         .num_links = 1,
144         .controls = tegra_alc5632_controls,
145         .num_controls = ARRAY_SIZE(tegra_alc5632_controls),
146         .dapm_widgets = tegra_alc5632_dapm_widgets,
147         .num_dapm_widgets = ARRAY_SIZE(tegra_alc5632_dapm_widgets),
148         .fully_routed = true,
149 };
150 
151 static int tegra_alc5632_probe(struct platform_device *pdev)
152 {
153         struct device_node *np = pdev->dev.of_node;
154         struct snd_soc_card *card = &snd_soc_tegra_alc5632;
155         struct tegra_alc5632 *alc5632;
156         int ret;
157 
158         alc5632 = devm_kzalloc(&pdev->dev,
159                         sizeof(struct tegra_alc5632), GFP_KERNEL);
160         if (!alc5632) {
161                 dev_err(&pdev->dev, "Can't allocate tegra_alc5632\n");
162                 return -ENOMEM;
163         }
164 
165         card->dev = &pdev->dev;
166         platform_set_drvdata(pdev, card);
167         snd_soc_card_set_drvdata(card, alc5632);
168 
169         alc5632->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
170         if (alc5632->gpio_hp_det == -EPROBE_DEFER)
171                 return -EPROBE_DEFER;
172 
173         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
174         if (ret)
175                 goto err;
176 
177         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
178         if (ret)
179                 goto err;
180 
181         tegra_alc5632_dai.codec_of_node = of_parse_phandle(
182                         pdev->dev.of_node, "nvidia,audio-codec", 0);
183 
184         if (!tegra_alc5632_dai.codec_of_node) {
185                 dev_err(&pdev->dev,
186                         "Property 'nvidia,audio-codec' missing or invalid\n");
187                 ret = -EINVAL;
188                 goto err;
189         }
190 
191         tegra_alc5632_dai.cpu_of_node = of_parse_phandle(np,
192                         "nvidia,i2s-controller", 0);
193         if (!tegra_alc5632_dai.cpu_of_node) {
194                 dev_err(&pdev->dev,
195                         "Property 'nvidia,i2s-controller' missing or invalid\n");
196                 ret = -EINVAL;
197                 goto err;
198         }
199 
200         tegra_alc5632_dai.platform_of_node = tegra_alc5632_dai.cpu_of_node;
201 
202         ret = tegra_asoc_utils_init(&alc5632->util_data, &pdev->dev);
203         if (ret)
204                 goto err;
205 
206         ret = snd_soc_register_card(card);
207         if (ret) {
208                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
209                         ret);
210                 goto err_fini_utils;
211         }
212 
213         return 0;
214 
215 err_fini_utils:
216         tegra_asoc_utils_fini(&alc5632->util_data);
217 err:
218         return ret;
219 }
220 
221 static int tegra_alc5632_remove(struct platform_device *pdev)
222 {
223         struct snd_soc_card *card = platform_get_drvdata(pdev);
224         struct tegra_alc5632 *machine = snd_soc_card_get_drvdata(card);
225 
226         snd_soc_jack_free_gpios(&tegra_alc5632_hs_jack, 1,
227                                 &tegra_alc5632_hp_jack_gpio);
228 
229         snd_soc_unregister_card(card);
230 
231         tegra_asoc_utils_fini(&machine->util_data);
232 
233         return 0;
234 }
235 
236 static const struct of_device_id tegra_alc5632_of_match[] = {
237         { .compatible = "nvidia,tegra-audio-alc5632", },
238         {},
239 };
240 
241 static struct platform_driver tegra_alc5632_driver = {
242         .driver = {
243                 .name = DRV_NAME,
244                 .owner = THIS_MODULE,
245                 .pm = &snd_soc_pm_ops,
246                 .of_match_table = tegra_alc5632_of_match,
247         },
248         .probe = tegra_alc5632_probe,
249         .remove = tegra_alc5632_remove,
250 };
251 module_platform_driver(tegra_alc5632_driver);
252 
253 MODULE_AUTHOR("Leon Romanovsky <leon@leon.nu>");
254 MODULE_DESCRIPTION("Tegra+ALC5632 machine ASoC driver");
255 MODULE_LICENSE("GPL");
256 MODULE_ALIAS("platform:" DRV_NAME);
257 MODULE_DEVICE_TABLE(of, tegra_alc5632_of_match);
258 

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