Version:  2.0.40 2.2.26 2.4.37 3.0 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

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_codec *codec = codec_dai->codec;
 55         struct snd_soc_card *card = codec->card;
 56         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
 57         int srate, mclk;
 58         int err;
 59 
 60         srate = params_rate(params);
 61         mclk = 256 * srate;
 62 
 63         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
 64         if (err < 0) {
 65                 dev_err(card->dev, "Can't configure clocks\n");
 66                 return err;
 67         }
 68 
 69         err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
 70                                         SND_SOC_CLOCK_IN);
 71         if (err < 0) {
 72                 dev_err(card->dev, "codec_dai clock not set\n");
 73                 return err;
 74         }
 75 
 76         return 0;
 77 }
 78 
 79 static struct snd_soc_ops tegra_rt5640_ops = {
 80         .hw_params = tegra_rt5640_asoc_hw_params,
 81 };
 82 
 83 static struct snd_soc_jack tegra_rt5640_hp_jack;
 84 
 85 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
 86         {
 87                 .pin = "Headphones",
 88                 .mask = SND_JACK_HEADPHONE,
 89         },
 90 };
 91 
 92 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
 93         .name = "Headphone detection",
 94         .report = SND_JACK_HEADPHONE,
 95         .debounce_time = 150,
 96         .invert = 1,
 97 };
 98 
 99 static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
100         SND_SOC_DAPM_HP("Headphones", NULL),
101         SND_SOC_DAPM_SPK("Speakers", NULL),
102         SND_SOC_DAPM_MIC("Mic Jack", NULL),
103 };
104 
105 static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
106         SOC_DAPM_PIN_SWITCH("Speakers"),
107 };
108 
109 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
110 {
111         struct snd_soc_dai *codec_dai = rtd->codec_dai;
112         struct snd_soc_codec *codec = codec_dai->codec;
113         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(codec->card);
114 
115         snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
116                          &tegra_rt5640_hp_jack);
117         snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
118                         ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
119                         tegra_rt5640_hp_jack_pins);
120 
121         if (gpio_is_valid(machine->gpio_hp_det)) {
122                 tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
123                 snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
124                                                 1,
125                                                 &tegra_rt5640_hp_jack_gpio);
126         }
127 
128         return 0;
129 }
130 
131 static int tegra_rt5640_card_remove(struct snd_soc_card *card)
132 {
133         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
134 
135         if (gpio_is_valid(machine->gpio_hp_det)) {
136                 snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
137                                         &tegra_rt5640_hp_jack_gpio);
138         }
139 
140         return 0;
141 }
142 
143 static struct snd_soc_dai_link tegra_rt5640_dai = {
144         .name = "RT5640",
145         .stream_name = "RT5640 PCM",
146         .codec_dai_name = "rt5640-aif1",
147         .init = tegra_rt5640_asoc_init,
148         .ops = &tegra_rt5640_ops,
149         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
150                         SND_SOC_DAIFMT_CBS_CFS,
151 };
152 
153 static struct snd_soc_card snd_soc_tegra_rt5640 = {
154         .name = "tegra-rt5640",
155         .owner = THIS_MODULE,
156         .remove = tegra_rt5640_card_remove,
157         .dai_link = &tegra_rt5640_dai,
158         .num_links = 1,
159         .controls = tegra_rt5640_controls,
160         .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
161         .dapm_widgets = tegra_rt5640_dapm_widgets,
162         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
163         .fully_routed = true,
164 };
165 
166 static int tegra_rt5640_probe(struct platform_device *pdev)
167 {
168         struct device_node *np = pdev->dev.of_node;
169         struct snd_soc_card *card = &snd_soc_tegra_rt5640;
170         struct tegra_rt5640 *machine;
171         int ret;
172 
173         machine = devm_kzalloc(&pdev->dev,
174                         sizeof(struct tegra_rt5640), GFP_KERNEL);
175         if (!machine) {
176                 dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
177                 return -ENOMEM;
178         }
179 
180         card->dev = &pdev->dev;
181         platform_set_drvdata(pdev, card);
182         snd_soc_card_set_drvdata(card, machine);
183 
184         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
185         if (machine->gpio_hp_det == -EPROBE_DEFER)
186                 return -EPROBE_DEFER;
187 
188         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
189         if (ret)
190                 goto err;
191 
192         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
193         if (ret)
194                 goto err;
195 
196         tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
197                         "nvidia,audio-codec", 0);
198         if (!tegra_rt5640_dai.codec_of_node) {
199                 dev_err(&pdev->dev,
200                         "Property 'nvidia,audio-codec' missing or invalid\n");
201                 ret = -EINVAL;
202                 goto err;
203         }
204 
205         tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
206                         "nvidia,i2s-controller", 0);
207         if (!tegra_rt5640_dai.cpu_of_node) {
208                 dev_err(&pdev->dev,
209                         "Property 'nvidia,i2s-controller' missing or invalid\n");
210                 ret = -EINVAL;
211                 goto err;
212         }
213 
214         tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
215 
216         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
217         if (ret)
218                 goto err;
219 
220         ret = snd_soc_register_card(card);
221         if (ret) {
222                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
223                         ret);
224                 goto err_fini_utils;
225         }
226 
227         return 0;
228 
229 err_fini_utils:
230         tegra_asoc_utils_fini(&machine->util_data);
231 err:
232         return ret;
233 }
234 
235 static int tegra_rt5640_remove(struct platform_device *pdev)
236 {
237         struct snd_soc_card *card = platform_get_drvdata(pdev);
238         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
239 
240         snd_soc_unregister_card(card);
241 
242         tegra_asoc_utils_fini(&machine->util_data);
243 
244         return 0;
245 }
246 
247 static const struct of_device_id tegra_rt5640_of_match[] = {
248         { .compatible = "nvidia,tegra-audio-rt5640", },
249         {},
250 };
251 
252 static struct platform_driver tegra_rt5640_driver = {
253         .driver = {
254                 .name = DRV_NAME,
255                 .owner = THIS_MODULE,
256                 .pm = &snd_soc_pm_ops,
257                 .of_match_table = tegra_rt5640_of_match,
258         },
259         .probe = tegra_rt5640_probe,
260         .remove = tegra_rt5640_remove,
261 };
262 module_platform_driver(tegra_rt5640_driver);
263 
264 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
265 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
266 MODULE_LICENSE("GPL v2");
267 MODULE_ALIAS("platform:" DRV_NAME);
268 MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
269 

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