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_max98090.c

  1 /*
  2  * Tegra machine ASoC driver for boards using a MAX90809 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 "tegra_asoc_utils.h"
 39 
 40 #define DRV_NAME "tegra-snd-max98090"
 41 
 42 struct tegra_max98090 {
 43         struct tegra_asoc_utils_data util_data;
 44         int gpio_hp_det;
 45 };
 46 
 47 static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
 48                                         struct snd_pcm_hw_params *params)
 49 {
 50         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 51         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 52         struct snd_soc_card *card = rtd->card;
 53         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
 54         int srate, mclk;
 55         int err;
 56 
 57         srate = params_rate(params);
 58         switch (srate) {
 59         case 8000:
 60         case 16000:
 61         case 24000:
 62         case 32000:
 63         case 48000:
 64         case 64000:
 65         case 96000:
 66                 mclk = 12288000;
 67                 break;
 68         case 11025:
 69         case 22050:
 70         case 44100:
 71         case 88200:
 72                 mclk = 11289600;
 73                 break;
 74         default:
 75                 mclk = 12000000;
 76                 break;
 77         }
 78 
 79         err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
 80         if (err < 0) {
 81                 dev_err(card->dev, "Can't configure clocks\n");
 82                 return err;
 83         }
 84 
 85         err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
 86                                         SND_SOC_CLOCK_IN);
 87         if (err < 0) {
 88                 dev_err(card->dev, "codec_dai clock not set\n");
 89                 return err;
 90         }
 91 
 92         return 0;
 93 }
 94 
 95 static struct snd_soc_ops tegra_max98090_ops = {
 96         .hw_params = tegra_max98090_asoc_hw_params,
 97 };
 98 
 99 static struct snd_soc_jack tegra_max98090_hp_jack;
100 
101 static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
102         {
103                 .pin = "Headphones",
104                 .mask = SND_JACK_HEADPHONE,
105         },
106 };
107 
108 static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
109         .name = "Headphone detection",
110         .report = SND_JACK_HEADPHONE,
111         .debounce_time = 150,
112         .invert = 1,
113 };
114 
115 static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
116         SND_SOC_DAPM_HP("Headphones", NULL),
117         SND_SOC_DAPM_SPK("Speakers", NULL),
118         SND_SOC_DAPM_MIC("Mic Jack", NULL),
119 };
120 
121 static const struct snd_kcontrol_new tegra_max98090_controls[] = {
122         SOC_DAPM_PIN_SWITCH("Speakers"),
123 };
124 
125 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
126 {
127         struct snd_soc_dai *codec_dai = rtd->codec_dai;
128         struct snd_soc_codec *codec = codec_dai->codec;
129         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
130 
131         if (gpio_is_valid(machine->gpio_hp_det)) {
132                 snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
133                                 &tegra_max98090_hp_jack);
134                 snd_soc_jack_add_pins(&tegra_max98090_hp_jack,
135                                 ARRAY_SIZE(tegra_max98090_hp_jack_pins),
136                                 tegra_max98090_hp_jack_pins);
137 
138                 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
139                 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
140                                         1,
141                                         &tegra_max98090_hp_jack_gpio);
142         }
143 
144         return 0;
145 }
146 
147 static int tegra_max98090_card_remove(struct snd_soc_card *card)
148 {
149         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
150 
151         if (gpio_is_valid(machine->gpio_hp_det)) {
152                 snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
153                                         &tegra_max98090_hp_jack_gpio);
154         }
155 
156         return 0;
157 }
158 
159 static struct snd_soc_dai_link tegra_max98090_dai = {
160         .name = "max98090",
161         .stream_name = "max98090 PCM",
162         .codec_dai_name = "HiFi",
163         .init = tegra_max98090_asoc_init,
164         .ops = &tegra_max98090_ops,
165         .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
166                         SND_SOC_DAIFMT_CBS_CFS,
167 };
168 
169 static struct snd_soc_card snd_soc_tegra_max98090 = {
170         .name = "tegra-max98090",
171         .owner = THIS_MODULE,
172         .remove = tegra_max98090_card_remove,
173         .dai_link = &tegra_max98090_dai,
174         .num_links = 1,
175         .controls = tegra_max98090_controls,
176         .num_controls = ARRAY_SIZE(tegra_max98090_controls),
177         .dapm_widgets = tegra_max98090_dapm_widgets,
178         .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
179         .fully_routed = true,
180 };
181 
182 static int tegra_max98090_probe(struct platform_device *pdev)
183 {
184         struct device_node *np = pdev->dev.of_node;
185         struct snd_soc_card *card = &snd_soc_tegra_max98090;
186         struct tegra_max98090 *machine;
187         int ret;
188 
189         machine = devm_kzalloc(&pdev->dev,
190                         sizeof(struct tegra_max98090), GFP_KERNEL);
191         if (!machine) {
192                 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
193                 return -ENOMEM;
194         }
195 
196         card->dev = &pdev->dev;
197         platform_set_drvdata(pdev, card);
198         snd_soc_card_set_drvdata(card, machine);
199 
200         machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
201         if (machine->gpio_hp_det == -EPROBE_DEFER)
202                 return -EPROBE_DEFER;
203 
204         ret = snd_soc_of_parse_card_name(card, "nvidia,model");
205         if (ret)
206                 goto err;
207 
208         ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
209         if (ret)
210                 goto err;
211 
212         tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
213                         "nvidia,audio-codec", 0);
214         if (!tegra_max98090_dai.codec_of_node) {
215                 dev_err(&pdev->dev,
216                         "Property 'nvidia,audio-codec' missing or invalid\n");
217                 ret = -EINVAL;
218                 goto err;
219         }
220 
221         tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
222                         "nvidia,i2s-controller", 0);
223         if (!tegra_max98090_dai.cpu_of_node) {
224                 dev_err(&pdev->dev,
225                         "Property 'nvidia,i2s-controller' missing or invalid\n");
226                 ret = -EINVAL;
227                 goto err;
228         }
229 
230         tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
231 
232         ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
233         if (ret)
234                 goto err;
235 
236         ret = snd_soc_register_card(card);
237         if (ret) {
238                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
239                         ret);
240                 goto err_fini_utils;
241         }
242 
243         return 0;
244 
245 err_fini_utils:
246         tegra_asoc_utils_fini(&machine->util_data);
247 err:
248         return ret;
249 }
250 
251 static int tegra_max98090_remove(struct platform_device *pdev)
252 {
253         struct snd_soc_card *card = platform_get_drvdata(pdev);
254         struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
255 
256         snd_soc_unregister_card(card);
257 
258         tegra_asoc_utils_fini(&machine->util_data);
259 
260         return 0;
261 }
262 
263 static const struct of_device_id tegra_max98090_of_match[] = {
264         { .compatible = "nvidia,tegra-audio-max98090", },
265         {},
266 };
267 
268 static struct platform_driver tegra_max98090_driver = {
269         .driver = {
270                 .name = DRV_NAME,
271                 .owner = THIS_MODULE,
272                 .pm = &snd_soc_pm_ops,
273                 .of_match_table = tegra_max98090_of_match,
274         },
275         .probe = tegra_max98090_probe,
276         .remove = tegra_max98090_remove,
277 };
278 module_platform_driver(tegra_max98090_driver);
279 
280 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
281 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
282 MODULE_LICENSE("GPL v2");
283 MODULE_ALIAS("platform:" DRV_NAME);
284 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
285 

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