Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/sound/soc/tegra/tegra_rt5640.c

  1 /*
  2 * tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
  3  *
  4  * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
  5  *
  6  * This program is free software; you can redistribute it and/or modify it
  7  * under the terms and conditions of the GNU General Public License,
  8  * version 2, as published by the Free Software Foundation.
  9  *
 10  * This program is distributed in the hope it will be useful, but WITHOUT
 11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 13  * more details.
 14  *
 15  * You should have received a copy of the GNU General Public License
 16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 17  *
 18  * Based on code copyright/by:
 19  *
 20  * Copyright (C) 2010-2012 - NVIDIA, Inc.
 21  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
 22  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 23  * Copyright 2007 Wolfson Microelectronics PLC.
 24  */
 25 
 26 #include <linux/module.h>
 27 #include <linux/platform_device.h>
 28 #include <linux/slab.h>
 29 #include <linux/gpio.h>
 30 #include <linux/of_gpio.h>
 31 
 32 #include <sound/core.h>
 33 #include <sound/jack.h>
 34 #include <sound/pcm.h>
 35 #include <sound/pcm_params.h>
 36 #include <sound/soc.h>
 37 
 38 #include "../codecs/rt5640.h"
 39 
 40 #include "tegra_asoc_utils.h"
 41 
 42 #define DRV_NAME "tegra-snd-rt5640"
 43 
 44 struct tegra_rt5640 {
 45         struct tegra_asoc_utils_data util_data;
 46         int gpio_hp_det;
 47 };
 48 
 49 static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
 50                                         struct snd_pcm_hw_params *params)
 51 {
 52         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 53         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 54         struct snd_soc_card *card = rtd->card;
 55         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
 56         int srate, mclk;
 57         int err;
 58 
 59         srate = params_rate(params);
 60         mclk = 256 * srate;
 61 
 62         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
 63         if (err < 0) {
 64                 dev_err(card->dev, "Can't configure clocks\n");
 65                 return err;
 66         }
 67 
 68         err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
 69                                         SND_SOC_CLOCK_IN);
 70         if (err < 0) {
 71                 dev_err(card->dev, "codec_dai clock not set\n");
 72                 return err;
 73         }
 74 
 75         return 0;
 76 }
 77 
 78 static struct snd_soc_ops tegra_rt5640_ops = {
 79         .hw_params = tegra_rt5640_asoc_hw_params,
 80 };
 81 
 82 static struct snd_soc_jack tegra_rt5640_hp_jack;
 83 
 84 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
 85         {
 86                 .pin = "Headphones",
 87                 .mask = SND_JACK_HEADPHONE,
 88         },
 89 };
 90 
 91 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
 92         .name = "Headphone detection",
 93         .report = SND_JACK_HEADPHONE,
 94         .debounce_time = 150,
 95         .invert = 1,
 96 };
 97 
 98 static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
 99         SND_SOC_DAPM_HP("Headphones", NULL),
100         SND_SOC_DAPM_SPK("Speakers", NULL),
101         SND_SOC_DAPM_MIC("Mic Jack", NULL),
102 };
103 
104 static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
105         SOC_DAPM_PIN_SWITCH("Speakers"),
106 };
107 
108 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
109 {
110         struct snd_soc_dai *codec_dai = rtd->codec_dai;
111         struct snd_soc_codec *codec = codec_dai->codec;
112         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
113 
114         snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
115                          &tegra_rt5640_hp_jack);
116         snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
117                         ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
118                         tegra_rt5640_hp_jack_pins);
119 
120         if (gpio_is_valid(machine->gpio_hp_det)) {
121                 tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
122                 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
123                                                 1,
124                                                 &tegra_rt5640_hp_jack_gpio);
125         }
126 
127         return 0;
128 }
129 
130 static int tegra_rt5640_card_remove(struct snd_soc_card *card)
131 {
132         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
133 
134         if (gpio_is_valid(machine->gpio_hp_det)) {
135                 snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
136                                         &tegra_rt5640_hp_jack_gpio);
137         }
138 
139         return 0;
140 }
141 
142 static struct snd_soc_dai_link tegra_rt5640_dai = {
143         .name = "RT5640",
144         .stream_name = "RT5640 PCM",
145         .codec_dai_name = "rt5640-aif1",
146         .init = tegra_rt5640_asoc_init,
147         .ops = &tegra_rt5640_ops,
148         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
149                         SND_SOC_DAIFMT_CBS_CFS,
150 };
151 
152 static struct snd_soc_card snd_soc_tegra_rt5640 = {
153         .name = "tegra-rt5640",
154         .owner = THIS_MODULE,
155         .remove = tegra_rt5640_card_remove,
156         .dai_link = &tegra_rt5640_dai,
157         .num_links = 1,
158         .controls = tegra_rt5640_controls,
159         .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
160         .dapm_widgets = tegra_rt5640_dapm_widgets,
161         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
162         .fully_routed = true,
163 };
164 
165 static int tegra_rt5640_probe(struct platform_device *pdev)
166 {
167         struct device_node *np = pdev->dev.of_node;
168         struct snd_soc_card *card = &snd_soc_tegra_rt5640;
169         struct tegra_rt5640 *machine;
170         int ret;
171 
172         machine = devm_kzalloc(&pdev->dev,
173                         sizeof(struct tegra_rt5640), GFP_KERNEL);
174         if (!machine) {
175                 dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
176                 return -ENOMEM;
177         }
178 
179         card->dev = &pdev->dev;
180         platform_set_drvdata(pdev, card);
181         snd_soc_card_set_drvdata(card, machine);
182 
183         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
184         if (machine->gpio_hp_det == -EPROBE_DEFER)
185                 return -EPROBE_DEFER;
186 
187         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
188         if (ret)
189                 goto err;
190 
191         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
192         if (ret)
193                 goto err;
194 
195         tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
196                         "nvidia,audio-codec", 0);
197         if (!tegra_rt5640_dai.codec_of_node) {
198                 dev_err(&pdev->dev,
199                         "Property 'nvidia,audio-codec' missing or invalid\n");
200                 ret = -EINVAL;
201                 goto err;
202         }
203 
204         tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
205                         "nvidia,i2s-controller", 0);
206         if (!tegra_rt5640_dai.cpu_of_node) {
207                 dev_err(&pdev->dev,
208                         "Property 'nvidia,i2s-controller' missing or invalid\n");
209                 ret = -EINVAL;
210                 goto err;
211         }
212 
213         tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
214 
215         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
216         if (ret)
217                 goto err;
218 
219         ret = snd_soc_register_card(card);
220         if (ret) {
221                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
222                         ret);
223                 goto err_fini_utils;
224         }
225 
226         return 0;
227 
228 err_fini_utils:
229         tegra_asoc_utils_fini(&machine->util_data);
230 err:
231         return ret;
232 }
233 
234 static int tegra_rt5640_remove(struct platform_device *pdev)
235 {
236         struct snd_soc_card *card = platform_get_drvdata(pdev);
237         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
238 
239         snd_soc_unregister_card(card);
240 
241         tegra_asoc_utils_fini(&machine->util_data);
242 
243         return 0;
244 }
245 
246 static const struct of_device_id tegra_rt5640_of_match[] = {
247         { .compatible = "nvidia,tegra-audio-rt5640", },
248         {},
249 };
250 
251 static struct platform_driver tegra_rt5640_driver = {
252         .driver = {
253                 .name = DRV_NAME,
254                 .owner = THIS_MODULE,
255                 .pm = &snd_soc_pm_ops,
256                 .of_match_table = tegra_rt5640_of_match,
257         },
258         .probe = tegra_rt5640_probe,
259         .remove = tegra_rt5640_remove,
260 };
261 module_platform_driver(tegra_rt5640_driver);
262 
263 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
264 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
265 MODULE_LICENSE("GPL v2");
266 MODULE_ALIAS("platform:" DRV_NAME);
267 MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
268 

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