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Diffstat (limited to 'sound/soc/tegra/tegra_max98090.c')
-rw-r--r--sound/soc/tegra/tegra_max98090.c275
1 files changed, 275 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_max98090.c b/sound/soc/tegra/tegra_max98090.c
new file mode 100644
index 000000000000..0283cfb7c031
--- /dev/null
+++ b/sound/soc/tegra/tegra_max98090.c
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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
42struct tegra_max98090 {
43 struct tegra_asoc_utils_data util_data;
44 int gpio_hp_det;
45};
46
47static 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_codec *codec = codec_dai->codec;
53 struct snd_soc_card *card = codec->card;
54 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
55 int srate, mclk;
56 int err;
57
58 srate = params_rate(params);
59 switch (srate) {
60 case 8000:
61 case 16000:
62 case 24000:
63 case 32000:
64 case 48000:
65 case 64000:
66 case 96000:
67 mclk = 12288000;
68 break;
69 case 11025:
70 case 22050:
71 case 44100:
72 case 88200:
73 mclk = 11289600;
74 break;
75 default:
76 mclk = 12000000;
77 break;
78 }
79
80 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
81 if (err < 0) {
82 dev_err(card->dev, "Can't configure clocks\n");
83 return err;
84 }
85
86 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
87 SND_SOC_CLOCK_IN);
88 if (err < 0) {
89 dev_err(card->dev, "codec_dai clock not set\n");
90 return err;
91 }
92
93 return 0;
94}
95
96static struct snd_soc_ops tegra_max98090_ops = {
97 .hw_params = tegra_max98090_asoc_hw_params,
98};
99
100static struct snd_soc_jack tegra_max98090_hp_jack;
101
102static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
103 {
104 .pin = "Headphones",
105 .mask = SND_JACK_HEADPHONE,
106 },
107};
108
109static struct snd_soc_jack_gpio tegra_max98090_hp_jack_gpio = {
110 .name = "Headphone detection",
111 .report = SND_JACK_HEADPHONE,
112 .debounce_time = 150,
113 .invert = 1,
114};
115
116static const struct snd_soc_dapm_widget tegra_max98090_dapm_widgets[] = {
117 SND_SOC_DAPM_HP("Headphones", NULL),
118 SND_SOC_DAPM_SPK("Speakers", NULL),
119 SND_SOC_DAPM_MIC("Mic Jack", NULL),
120};
121
122static const struct snd_kcontrol_new tegra_max98090_controls[] = {
123 SOC_DAPM_PIN_SWITCH("Speakers"),
124};
125
126static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
127{
128 struct snd_soc_dai *codec_dai = rtd->codec_dai;
129 struct snd_soc_codec *codec = codec_dai->codec;
130 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(codec->card);
131
132 if (gpio_is_valid(machine->gpio_hp_det)) {
133 snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
134 &tegra_max98090_hp_jack);
135 snd_soc_jack_add_pins(&tegra_max98090_hp_jack,
136 ARRAY_SIZE(tegra_max98090_hp_jack_pins),
137 tegra_max98090_hp_jack_pins);
138
139 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
140 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
141 1,
142 &tegra_max98090_hp_jack_gpio);
143 }
144
145 return 0;
146}
147
148static struct snd_soc_dai_link tegra_max98090_dai = {
149 .name = "max98090",
150 .stream_name = "max98090 PCM",
151 .codec_dai_name = "HiFi",
152 .init = tegra_max98090_asoc_init,
153 .ops = &tegra_max98090_ops,
154 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
155 SND_SOC_DAIFMT_CBS_CFS,
156};
157
158static struct snd_soc_card snd_soc_tegra_max98090 = {
159 .name = "tegra-max98090",
160 .owner = THIS_MODULE,
161 .dai_link = &tegra_max98090_dai,
162 .num_links = 1,
163 .controls = tegra_max98090_controls,
164 .num_controls = ARRAY_SIZE(tegra_max98090_controls),
165 .dapm_widgets = tegra_max98090_dapm_widgets,
166 .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
167 .fully_routed = true,
168};
169
170static int tegra_max98090_probe(struct platform_device *pdev)
171{
172 struct device_node *np = pdev->dev.of_node;
173 struct snd_soc_card *card = &snd_soc_tegra_max98090;
174 struct tegra_max98090 *machine;
175 int ret;
176
177 machine = devm_kzalloc(&pdev->dev,
178 sizeof(struct tegra_max98090), GFP_KERNEL);
179 if (!machine) {
180 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
181 return -ENOMEM;
182 }
183
184 card->dev = &pdev->dev;
185 platform_set_drvdata(pdev, card);
186 snd_soc_card_set_drvdata(card, machine);
187
188 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
189 if (machine->gpio_hp_det == -EPROBE_DEFER)
190 return -EPROBE_DEFER;
191
192 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
193 if (ret)
194 goto err;
195
196 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
197 if (ret)
198 goto err;
199
200 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
201 "nvidia,audio-codec", 0);
202 if (!tegra_max98090_dai.codec_of_node) {
203 dev_err(&pdev->dev,
204 "Property 'nvidia,audio-codec' missing or invalid\n");
205 ret = -EINVAL;
206 goto err;
207 }
208
209 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
210 "nvidia,i2s-controller", 0);
211 if (!tegra_max98090_dai.cpu_of_node) {
212 dev_err(&pdev->dev,
213 "Property 'nvidia,i2s-controller' missing or invalid\n");
214 ret = -EINVAL;
215 goto err;
216 }
217
218 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
219
220 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
221 if (ret)
222 goto err;
223
224 ret = snd_soc_register_card(card);
225 if (ret) {
226 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
227 ret);
228 goto err_fini_utils;
229 }
230
231 return 0;
232
233err_fini_utils:
234 tegra_asoc_utils_fini(&machine->util_data);
235err:
236 return ret;
237}
238
239static int tegra_max98090_remove(struct platform_device *pdev)
240{
241 struct snd_soc_card *card = platform_get_drvdata(pdev);
242 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
243
244 snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
245 &tegra_max98090_hp_jack_gpio);
246
247 snd_soc_unregister_card(card);
248
249 tegra_asoc_utils_fini(&machine->util_data);
250
251 return 0;
252}
253
254static const struct of_device_id tegra_max98090_of_match[] = {
255 { .compatible = "nvidia,tegra-audio-max98090", },
256 {},
257};
258
259static struct platform_driver tegra_max98090_driver = {
260 .driver = {
261 .name = DRV_NAME,
262 .owner = THIS_MODULE,
263 .pm = &snd_soc_pm_ops,
264 .of_match_table = tegra_max98090_of_match,
265 },
266 .probe = tegra_max98090_probe,
267 .remove = tegra_max98090_remove,
268};
269module_platform_driver(tegra_max98090_driver);
270
271MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
272MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
273MODULE_LICENSE("GPL v2");
274MODULE_ALIAS("platform:" DRV_NAME);
275MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);