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 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
tegra_max98090_card_remove(struct snd_soc_card * card)179 static int tegra_max98090_card_remove(struct snd_soc_card *card)
180 {
181 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
182
183 if (gpio_is_valid(machine->gpio_hp_det)) {
184 snd_soc_jack_free_gpios(&tegra_max98090_hp_jack, 1,
185 &tegra_max98090_hp_jack_gpio);
186 }
187
188 if (gpio_is_valid(machine->gpio_mic_det)) {
189 snd_soc_jack_free_gpios(&tegra_max98090_mic_jack, 1,
190 &tegra_max98090_mic_jack_gpio);
191 }
192
193 return 0;
194 }
195
196 static struct snd_soc_dai_link tegra_max98090_dai = {
197 .name = "max98090",
198 .stream_name = "max98090 PCM",
199 .codec_dai_name = "HiFi",
200 .init = tegra_max98090_asoc_init,
201 .ops = &tegra_max98090_ops,
202 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
203 SND_SOC_DAIFMT_CBS_CFS,
204 };
205
206 static struct snd_soc_card snd_soc_tegra_max98090 = {
207 .name = "tegra-max98090",
208 .owner = THIS_MODULE,
209 .remove = tegra_max98090_card_remove,
210 .dai_link = &tegra_max98090_dai,
211 .num_links = 1,
212 .controls = tegra_max98090_controls,
213 .num_controls = ARRAY_SIZE(tegra_max98090_controls),
214 .dapm_widgets = tegra_max98090_dapm_widgets,
215 .num_dapm_widgets = ARRAY_SIZE(tegra_max98090_dapm_widgets),
216 .fully_routed = true,
217 };
218
tegra_max98090_probe(struct platform_device * pdev)219 static int tegra_max98090_probe(struct platform_device *pdev)
220 {
221 struct device_node *np = pdev->dev.of_node;
222 struct snd_soc_card *card = &snd_soc_tegra_max98090;
223 struct tegra_max98090 *machine;
224 int ret;
225
226 machine = devm_kzalloc(&pdev->dev,
227 sizeof(struct tegra_max98090), GFP_KERNEL);
228 if (!machine) {
229 dev_err(&pdev->dev, "Can't allocate tegra_max98090\n");
230 return -ENOMEM;
231 }
232
233 card->dev = &pdev->dev;
234 platform_set_drvdata(pdev, card);
235 snd_soc_card_set_drvdata(card, machine);
236
237 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
238 if (machine->gpio_hp_det == -EPROBE_DEFER)
239 return -EPROBE_DEFER;
240
241 machine->gpio_mic_det =
242 of_get_named_gpio(np, "nvidia,mic-det-gpios", 0);
243 if (machine->gpio_mic_det == -EPROBE_DEFER)
244 return -EPROBE_DEFER;
245
246 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
247 if (ret)
248 goto err;
249
250 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
251 if (ret)
252 goto err;
253
254 tegra_max98090_dai.codec_of_node = of_parse_phandle(np,
255 "nvidia,audio-codec", 0);
256 if (!tegra_max98090_dai.codec_of_node) {
257 dev_err(&pdev->dev,
258 "Property 'nvidia,audio-codec' missing or invalid\n");
259 ret = -EINVAL;
260 goto err;
261 }
262
263 tegra_max98090_dai.cpu_of_node = of_parse_phandle(np,
264 "nvidia,i2s-controller", 0);
265 if (!tegra_max98090_dai.cpu_of_node) {
266 dev_err(&pdev->dev,
267 "Property 'nvidia,i2s-controller' missing or invalid\n");
268 ret = -EINVAL;
269 goto err;
270 }
271
272 tegra_max98090_dai.platform_of_node = tegra_max98090_dai.cpu_of_node;
273
274 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
275 if (ret)
276 goto err;
277
278 ret = snd_soc_register_card(card);
279 if (ret) {
280 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
281 ret);
282 goto err_fini_utils;
283 }
284
285 return 0;
286
287 err_fini_utils:
288 tegra_asoc_utils_fini(&machine->util_data);
289 err:
290 return ret;
291 }
292
tegra_max98090_remove(struct platform_device * pdev)293 static int tegra_max98090_remove(struct platform_device *pdev)
294 {
295 struct snd_soc_card *card = platform_get_drvdata(pdev);
296 struct tegra_max98090 *machine = snd_soc_card_get_drvdata(card);
297
298 snd_soc_unregister_card(card);
299
300 tegra_asoc_utils_fini(&machine->util_data);
301
302 return 0;
303 }
304
305 static const struct of_device_id tegra_max98090_of_match[] = {
306 { .compatible = "nvidia,tegra-audio-max98090", },
307 {},
308 };
309
310 static struct platform_driver tegra_max98090_driver = {
311 .driver = {
312 .name = DRV_NAME,
313 .pm = &snd_soc_pm_ops,
314 .of_match_table = tegra_max98090_of_match,
315 },
316 .probe = tegra_max98090_probe,
317 .remove = tegra_max98090_remove,
318 };
319 module_platform_driver(tegra_max98090_driver);
320
321 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
322 MODULE_DESCRIPTION("Tegra max98090 machine ASoC driver");
323 MODULE_LICENSE("GPL v2");
324 MODULE_ALIAS("platform:" DRV_NAME);
325 MODULE_DEVICE_TABLE(of, tegra_max98090_of_match);
326