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 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),
138 static const struct snd_kcontrol_new tegra_max98090_controls[] = {
139 SOC_DAPM_PIN_SWITCH("Headphones"),
140 SOC_DAPM_PIN_SWITCH("Speakers"),
143 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
145 struct snd_soc_dai *codec_dai = rtd->codec_dai;
146 struct snd_soc_codec *codec = codec_dai->codec;
147 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
149 if (gpio_is_valid(machine->gpio_hp_det)) {
150 snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
151 &tegra_max98090_hp_jack);
152 snd_soc_jack_add_pins(&tegra_max98090_hp_jack,
153 ARRAY_SIZE(tegra_max98090_hp_jack_pins),
154 tegra_max98090_hp_jack_pins);
156 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
157 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
159 &tegra_max98090_hp_jack_gpio);
162 if (gpio_is_valid(machine->gpio_mic_det)) {
163 snd_soc_jack_new(codec, "Mic Jack", SND_JACK_MICROPHONE,
164 &tegra_max98090_mic_jack);
165 snd_soc_jack_add_pins(&tegra_max98090_mic_jack,
166 ARRAY_SIZE(tegra_max98090_mic_jack_pins),
167 tegra_max98090_mic_jack_pins);
169 tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
170 snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
172 &tegra_max98090_mic_jack_gpio);
178 static int tegra_max98090_card_remove(struct snd_soc_card *card)
180 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
182 if (gpio_is_valid(machine->gpio_hp_det)) {
183 snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
184 &tegra_max98090_hp_jack_gpio);
187 if (gpio_is_valid(machine->gpio_mic_det)) {
188 snd_soc_jack_free_gpios(&tegra_max98090_mic_jack, 1,
189 &tegra_max98090_mic_jack_gpio);
195 static struct snd_soc_dai_link tegra_max98090_dai = {
197 .stream_name = "max98090 PCM",
198 .codec_dai_name = "HiFi",
199 .init = tegra_max98090_asoc_init,
200 .ops = &tegra_max98090_ops,
201 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
202 SND_SOC_DAIFMT_CBS_CFS,
205 static struct snd_soc_card snd_soc_tegra_max98090 = {
206 .name = "tegra-max98090",
207 .owner = THIS_MODULE,
208 .remove = tegra_max98090_card_remove,
209 .dai_link = &tegra_max98090_dai,
211 .controls = tegra_max98090_controls,
212 .num_controls = ARRAY_SIZE(tegra_max98090_controls),
213 .dapm_widgets = tegra_max98090_dapm_widgets,
214 .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
215 .fully_routed = true,
218 static int tegra_max98090_probe(struct platform_device *pdev)
220 struct device_node *np = pdev->dev.of_node;
221 struct snd_soc_card *card = &snd_soc_tegra_max98090;
222 struct tegra_max98090 *machine;
225 machine = devm_kzalloc(&pdev->dev,
226 sizeof(struct tegra_max98090), GFP_KERNEL);
228 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
232 card->dev = &pdev->dev;
233 platform_set_drvdata(pdev, card);
234 snd_soc_card_set_drvdata(card, machine);
236 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
237 if (machine->gpio_hp_det == -EPROBE_DEFER)
238 return -EPROBE_DEFER;
240 machine->gpio_mic_det =
241 of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
242 if (machine->gpio_mic_det == -EPROBE_DEFER)
243 return -EPROBE_DEFER;
245 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
249 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
253 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
254 "nvidia,audio-codec", 0);
255 if (!tegra_max98090_dai.codec_of_node) {
257 "Property 'nvidia,audio-codec' missing or invalid\n");
262 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
263 "nvidia,i2s-controller", 0);
264 if (!tegra_max98090_dai.cpu_of_node) {
266 "Property 'nvidia,i2s-controller' missing or invalid\n");
271 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
273 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
277 ret = snd_soc_register_card(card);
279 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
287 tegra_asoc_utils_fini(&machine->util_data);
292 static int tegra_max98090_remove(struct platform_device *pdev)
294 struct snd_soc_card *card = platform_get_drvdata(pdev);
295 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
297 snd_soc_unregister_card(card);
299 tegra_asoc_utils_fini(&machine->util_data);
304 static const struct of_device_id tegra_max98090_of_match[] = {
305 { .compatible = "nvidia,tegra-audio-max98090", },
309 static struct platform_driver tegra_max98090_driver = {
312 .pm = &snd_soc_pm_ops,
313 .of_match_table = tegra_max98090_of_match,
315 .probe = tegra_max98090_probe,
316 .remove = tegra_max98090_remove,
318 module_platform_driver(tegra_max98090_driver);
320 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
321 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
322 MODULE_LICENSE("GPL v2");
323 MODULE_ALIAS("platform:" DRV_NAME);
324 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);