Version:  2.0.40 2.2.26 2.4.37 2.6.39 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

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 struct snd_soc_dai_link tegra_rt5640_dai = {
132         .name = "RT5640",
133         .stream_name = "RT5640 PCM",
134         .codec_dai_name = "rt5640-aif1",
135         .init = tegra_rt5640_asoc_init,
136         .ops = &tegra_rt5640_ops,
137         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
138                         SND_SOC_DAIFMT_CBS_CFS,
139 };
140 
141 static struct snd_soc_card snd_soc_tegra_rt5640 = {
142         .name = "tegra-rt5640",
143         .owner = THIS_MODULE,
144         .dai_link = &tegra_rt5640_dai,
145         .num_links = 1,
146         .controls = tegra_rt5640_controls,
147         .num_controls = ARRAY_SIZE(tegra_rt5640_controls),
148         .dapm_widgets = tegra_rt5640_dapm_widgets,
149         .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
150         .fully_routed = true,
151 };
152 
153 static int tegra_rt5640_probe(struct platform_device *pdev)
154 {
155         struct device_node *np = pdev->dev.of_node;
156         struct snd_soc_card *card = &snd_soc_tegra_rt5640;
157         struct tegra_rt5640 *machine;
158         int ret;
159 
160         machine = devm_kzalloc(&pdev->dev,
161                         sizeof(struct tegra_rt5640), GFP_KERNEL);
162         if (!machine) {
163                 dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
164                 return -ENOMEM;
165         }
166 
167         card->dev = &pdev->dev;
168         platform_set_drvdata(pdev, card);
169         snd_soc_card_set_drvdata(card, machine);
170 
171         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
172         if (machine->gpio_hp_det == -EPROBE_DEFER)
173                 return -EPROBE_DEFER;
174 
175         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
176         if (ret)
177                 goto err;
178 
179         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
180         if (ret)
181                 goto err;
182 
183         tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
184                         "nvidia,audio-codec", 0);
185         if (!tegra_rt5640_dai.codec_of_node) {
186                 dev_err(&pdev->dev,
187                         "Property 'nvidia,audio-codec' missing or invalid\n");
188                 ret = -EINVAL;
189                 goto err;
190         }
191 
192         tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
193                         "nvidia,i2s-controller", 0);
194         if (!tegra_rt5640_dai.cpu_of_node) {
195                 dev_err(&pdev->dev,
196                         "Property 'nvidia,i2s-controller' missing or invalid\n");
197                 ret = -EINVAL;
198                 goto err;
199         }
200 
201         tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
202 
203         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
204         if (ret)
205                 goto err;
206 
207         ret = snd_soc_register_card(card);
208         if (ret) {
209                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
210                         ret);
211                 goto err_fini_utils;
212         }
213 
214         return 0;
215 
216 err_fini_utils:
217         tegra_asoc_utils_fini(&machine->util_data);
218 err:
219         return ret;
220 }
221 
222 static int tegra_rt5640_remove(struct platform_device *pdev)
223 {
224         struct snd_soc_card *card = platform_get_drvdata(pdev);
225         struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
226 
227         snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
228                                 &tegra_rt5640_hp_jack_gpio);
229 
230         snd_soc_unregister_card(card);
231 
232         tegra_asoc_utils_fini(&machine->util_data);
233 
234         return 0;
235 }
236 
237 static const struct of_device_id tegra_rt5640_of_match[] = {
238         { .compatible = "nvidia,tegra-audio-rt5640", },
239         {},
240 };
241 
242 static struct platform_driver tegra_rt5640_driver = {
243         .driver = {
244                 .name = DRV_NAME,
245                 .owner = THIS_MODULE,
246                 .pm = &snd_soc_pm_ops,
247                 .of_match_table = tegra_rt5640_of_match,
248         },
249         .probe = tegra_rt5640_probe,
250         .remove = tegra_rt5640_remove,
251 };
252 module_platform_driver(tegra_rt5640_driver);
253 
254 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
255 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
256 MODULE_LICENSE("GPL v2");
257 MODULE_ALIAS("platform:" DRV_NAME);
258 MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
259 

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