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;
47 static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
48 struct snd_pcm_hw_params *params)
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);
57 srate = params_rate(params);
79 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
81 dev_err(card->dev, "Can't configure clocks\n");
85 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
88 dev_err(card->dev, "codec_dai clock not set\n");
95 static struct snd_soc_ops tegra_max98090_ops = {
96 .hw_params = tegra_max98090_asoc_hw_params,
99 static struct snd_soc_jack tegra_max98090_hp_jack;
101 static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
104 .mask = SND_JACK_HEADPHONE,
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,
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),
121 static const struct snd_kcontrol_new tegra_max98090_controls[] = {
122 SOC_DAPM_PIN_SWITCH("Speakers"),
125 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
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);
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);
138 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
139 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
141 &tegra_max98090_hp_jack_gpio);
147 static int tegra_max98090_card_remove(struct snd_soc_card *card)
149 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
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);
159 static struct snd_soc_dai_link tegra_max98090_dai = {
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,
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,
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,
182 static int tegra_max98090_probe(struct platform_device *pdev)
184 struct device_node *np = pdev->dev.of_node;
185 struct snd_soc_card *card = &snd_soc_tegra_max98090;
186 struct tegra_max98090 *machine;
189 machine = devm_kzalloc(&pdev->dev,
190 sizeof(struct tegra_max98090), GFP_KERNEL);
192 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
196 card->dev = &pdev->dev;
197 platform_set_drvdata(pdev, card);
198 snd_soc_card_set_drvdata(card, machine);
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;
204 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
208 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
212 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
213 "nvidia,audio-codec", 0);
214 if (!tegra_max98090_dai.codec_of_node) {
216 "Property 'nvidia,audio-codec' missing or invalid\n");
221 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
222 "nvidia,i2s-controller", 0);
223 if (!tegra_max98090_dai.cpu_of_node) {
225 "Property 'nvidia,i2s-controller' missing or invalid\n");
230 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
232 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
236 ret = snd_soc_register_card(card);
238 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
246 tegra_asoc_utils_fini(&machine->util_data);
251 static int tegra_max98090_remove(struct platform_device *pdev)
253 struct snd_soc_card *card = platform_get_drvdata(pdev);
254 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
256 snd_soc_unregister_card(card);
258 tegra_asoc_utils_fini(&machine->util_data);
263 static const struct of_device_id tegra_max98090_of_match[] = {
264 { .compatible = "nvidia,tegra-audio-max98090", },
268 static struct platform_driver tegra_max98090_driver = {
271 .owner = THIS_MODULE,
272 .pm = &snd_soc_pm_ops,
273 .of_match_table = tegra_max98090_of_match,
275 .probe = tegra_max98090_probe,
276 .remove = tegra_max98090_remove,
278 module_platform_driver(tegra_max98090_driver);
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);