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 int gpio_mic_det;
46 };
47
tegra_max98090_asoc_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)48 static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
49 struct snd_pcm_hw_params *params)
50 {
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);
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
96 static const struct snd_soc_ops tegra_max98090_ops = {
97 .hw_params = tegra_max98090_asoc_hw_params,
98 };
99
100 static struct snd_soc_jack tegra_max98090_hp_jack;
101
102 static struct snd_soc_jack_pin tegra_max98090_hp_jack_pins[] = {
103 {
104 .pin = "Headphones",
105 .mask = SND_JACK_HEADPHONE,
106 },
107 };
108
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,
113 .invert = 1,
114 };
115
116 static struct snd_soc_jack tegra_max98090_mic_jack;
117
118 static struct snd_soc_jack_pin tegra_max98090_mic_jack_pins[] = {
119 {
120 .pin = "Mic Jack",
121 .mask = SND_JACK_MICROPHONE,
122 },
123 };
124
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,
129 .invert = 1,
130 };
131
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),
137 };
138
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"),
144 };
145
tegra_max98090_asoc_init(struct snd_soc_pcm_runtime * rtd)146 static int tegra_max98090_asoc_init(struct snd_soc_pcm_runtime *rtd)
147 {
148 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(rtd->card);
149
150 if (gpio_is_valid(machine->gpio_hp_det)) {
151 snd_soc_card_jack_new(rtd->card, "Headphones",
152 SND_JACK_HEADPHONE,
153 &tegra_max98090_hp_jack,
154 tegra_max98090_hp_jack_pins,
155 ARRAY_SIZE(tegra_max98090_hp_jack_pins));
156
157 tegra_max98090_hp_jack_gpio.gpio = machine->gpio_hp_det;
158 snd_soc_jack_add_gpios(&tegra_max98090_hp_jack,
159 1,
160 &tegra_max98090_hp_jack_gpio);
161 }
162
163 if (gpio_is_valid(machine->gpio_mic_det)) {
164 snd_soc_card_jack_new(rtd->card, "Mic Jack",
165 SND_JACK_MICROPHONE,
166 &tegra_max98090_mic_jack,
167 tegra_max98090_mic_jack_pins,
168 ARRAY_SIZE(tegra_max98090_mic_jack_pins));
169
170 tegra_max98090_mic_jack_gpio.gpio = machine->gpio_mic_det;
171 snd_soc_jack_add_gpios(&tegra_max98090_mic_jack,
172 1,
173 &tegra_max98090_mic_jack_gpio);
174 }
175
176 return 0;
177 }
178
179 static struct snd_soc_dai_link tegra_max98090_dai = {
180 .name = "max98090",
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,
187 };
188
189 static struct snd_soc_card snd_soc_tegra_max98090 = {
190 .name = "tegra-max98090",
191 .owner = THIS_MODULE,
192 .dai_link = &tegra_max98090_dai,
193 .num_links = 1,
194 .controls = tegra_max98090_controls,
195 .num_controls = ARRAY_SIZE(tegra_max98090_controls),
196 .dapm_widgets = tegra_max98090_dapm_widgets,
197 .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
198 .fully_routed = true,
199 };
200
tegra_max98090_probe(struct platform_device * pdev)201 static int tegra_max98090_probe(struct platform_device *pdev)
202 {
203 struct device_node *np = pdev->dev.of_node;
204 struct snd_soc_card *card = &snd_soc_tegra_max98090;
205 struct tegra_max98090 *machine;
206 int ret;
207
208 machine = devm_kzalloc(&pdev->dev,
209 sizeof(struct tegra_max98090), GFP_KERNEL);
210 if (!machine)
211 return -ENOMEM;
212
213 card->dev = &pdev->dev;
214 snd_soc_card_set_drvdata(card, machine);
215
216 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
217 if (machine->gpio_hp_det == -EPROBE_DEFER)
218 return -EPROBE_DEFER;
219
220 machine->gpio_mic_det =
221 of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
222 if (machine->gpio_mic_det == -EPROBE_DEFER)
223 return -EPROBE_DEFER;
224
225 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
226 if (ret)
227 goto err;
228
229 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
230 if (ret)
231 goto err;
232
233 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
234 "nvidia,audio-codec", 0);
235 if (!tegra_max98090_dai.codec_of_node) {
236 dev_err(&pdev->dev,
237 "Property 'nvidia,audio-codec' missing or invalid\n");
238 ret = -EINVAL;
239 goto err;
240 }
241
242 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
243 "nvidia,i2s-controller", 0);
244 if (!tegra_max98090_dai.cpu_of_node) {
245 dev_err(&pdev->dev,
246 "Property 'nvidia,i2s-controller' missing or invalid\n");
247 ret = -EINVAL;
248 goto err;
249 }
250
251 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
252
253 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
254 if (ret)
255 goto err;
256
257 ret = snd_soc_register_card(card);
258 if (ret) {
259 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
260 ret);
261 goto err_fini_utils;
262 }
263
264 return 0;
265
266 err_fini_utils:
267 tegra_asoc_utils_fini(&machine->util_data);
268 err:
269 return ret;
270 }
271
tegra_max98090_remove(struct platform_device * pdev)272 static int tegra_max98090_remove(struct platform_device *pdev)
273 {
274 struct snd_soc_card *card = platform_get_drvdata(pdev);
275 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
276
277 snd_soc_unregister_card(card);
278
279 tegra_asoc_utils_fini(&machine->util_data);
280
281 return 0;
282 }
283
284 static const struct of_device_id tegra_max98090_of_match[] = {
285 { .compatible = "nvidia,tegra-audio-max98090", },
286 {},
287 };
288
289 static struct platform_driver tegra_max98090_driver = {
290 .driver = {
291 .name = DRV_NAME,
292 .pm = &snd_soc_pm_ops,
293 .of_match_table = tegra_max98090_of_match,
294 },
295 .probe = tegra_max98090_probe,
296 .remove = tegra_max98090_remove,
297 };
298 module_platform_driver(tegra_max98090_driver);
299
300 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
301 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
302 MODULE_LICENSE("GPL v2");
303 MODULE_ALIAS("platform:" DRV_NAME);
304 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
305