2 * Tegra machine ASoC driver for boards using a MAX90809 CODEC.
4 * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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.
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
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/>.
18 * Based on code copyright/by:
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.
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>
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>
38 #include "tegra_asoc_utils.h"
40 #define DRV_NAME "tegra-snd-max98090"
42 struct tegra_max98090 {
43 struct tegra_asoc_utils_data util_data;
48 static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
49 struct snd_pcm_hw_params *params)
51 struct snd_soc_pcm_runtime *rtd = substream->private_data;
52 struct snd_soc_dai *codec_dai = rtd->codec_dai;
53 struct snd_soc_card *card = rtd->card;
54 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
58 srate = params_rate(params);
80 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
82 dev_err(card->dev, "Can't configure clocks\n");
86 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
89 dev_err(card->dev, "codec_dai clock not set\n");
96 static const struct snd_soc_ops tegra_max98090_ops = {
97 .hw_params = tegra_max98090_asoc_hw_params,
100 static struct snd_soc_jack tegra_max98090_hp_jack;
102 static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
105 .mask = SND_JACK_HEADPHONE,
109 static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
110 .name = "Headphone detection",
111 .report = SND_JACK_HEADPHONE,
112 .debounce_time = 150,
116 static struct snd_soc_jack tegra_max98090_mic_jack;
118 static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
121 .mask = SND_JACK_MICROPHONE,
125 static struct snd_soc_jack_gpio tegra_max98090_mic_jack_gpio = {
126 .name = "Mic detection",
127 .report = SND_JACK_MICROPHONE,
128 .debounce_time = 150,
132 static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
133 SND_SOC_DAPM_HP("Headphones", NULL),
134 SND_SOC_DAPM_SPK("Speakers", NULL),
135 SND_SOC_DAPM_MIC("Mic Jack", NULL),
136 SND_SOC_DAPM_MIC("Int Mic", NULL),
139 static const struct snd_kcontrol_new tegra_max98090_controls[] = {
140 SOC_DAPM_PIN_SWITCH("Headphones"),
141 SOC_DAPM_PIN_SWITCH("Speakers"),
142 SOC_DAPM_PIN_SWITCH("Mic Jack"),
143 SOC_DAPM_PIN_SWITCH("Int Mic"),
146 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
148 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
150 if (gpio_is_valid(machine->gpio_hp_det)) {
151 snd_soc_card_jack_new(rtd->card, "Headphones",
153 &tegra_max98090_hp_jack,
154 tegra_max98090_hp_jack_pins,
155 ARRAY_SIZE(tegra_max98090_hp_jack_pins));
157 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
158 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
160 &tegra_max98090_hp_jack_gpio);
163 if (gpio_is_valid(machine->gpio_mic_det)) {
164 snd_soc_card_jack_new(rtd->card, "Mic Jack",
166 &tegra_max98090_mic_jack,
167 tegra_max98090_mic_jack_pins,
168 ARRAY_SIZE(tegra_max98090_mic_jack_pins));
170 tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
171 snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
173 &tegra_max98090_mic_jack_gpio);
179 static struct snd_soc_dai_link tegra_max98090_dai = {
181 .stream_name = "max98090 PCM",
182 .codec_dai_name = "HiFi",
183 .init = tegra_max98090_asoc_init,
184 .ops = &tegra_max98090_ops,
185 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
186 SND_SOC_DAIFMT_CBS_CFS,
189 static struct snd_soc_card snd_soc_tegra_max98090 = {
190 .name = "tegra-max98090",
191 .driver_name = "tegra",
192 .owner = THIS_MODULE,
193 .dai_link = &tegra_max98090_dai,
195 .controls = tegra_max98090_controls,
196 .num_controls = ARRAY_SIZE(tegra_max98090_controls),
197 .dapm_widgets = tegra_max98090_dapm_widgets,
198 .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
199 .fully_routed = true,
202 static int tegra_max98090_probe(struct platform_device *pdev)
204 struct device_node *np = pdev->dev.of_node;
205 struct snd_soc_card *card = &snd_soc_tegra_max98090;
206 struct tegra_max98090 *machine;
209 machine = devm_kzalloc(&pdev->dev,
210 sizeof(struct tegra_max98090), GFP_KERNEL);
214 card->dev = &pdev->dev;
215 snd_soc_card_set_drvdata(card, machine);
217 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
218 if (machine->gpio_hp_det == -EPROBE_DEFER)
219 return -EPROBE_DEFER;
221 machine->gpio_mic_det =
222 of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
223 if (machine->gpio_mic_det == -EPROBE_DEFER)
224 return -EPROBE_DEFER;
226 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
230 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
234 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
235 "nvidia,audio-codec", 0);
236 if (!tegra_max98090_dai.codec_of_node) {
238 "Property 'nvidia,audio-codec' missing or invalid\n");
243 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
244 "nvidia,i2s-controller", 0);
245 if (!tegra_max98090_dai.cpu_of_node) {
247 "Property 'nvidia,i2s-controller' missing or invalid\n");
252 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
254 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
258 ret = snd_soc_register_card(card);
260 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
268 tegra_asoc_utils_fini(&machine->util_data);
273 static int tegra_max98090_remove(struct platform_device *pdev)
275 struct snd_soc_card *card = platform_get_drvdata(pdev);
276 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
278 snd_soc_unregister_card(card);
280 tegra_asoc_utils_fini(&machine->util_data);
285 static const struct of_device_id tegra_max98090_of_match[] = {
286 { .compatible = "nvidia,tegra-audio-max98090", },
290 static struct platform_driver tegra_max98090_driver = {
293 .pm = &snd_soc_pm_ops,
294 .of_match_table = tegra_max98090_of_match,
296 .probe = tegra_max98090_probe,
297 .remove = tegra_max98090_remove,
299 module_platform_driver(tegra_max98090_driver);
301 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
302 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
303 MODULE_LICENSE("GPL v2");
304 MODULE_ALIAS("platform:" DRV_NAME);
305 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);