1 /*
2 * tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
3 *
4 * Copyright (c) 2014, The Chromium OS Authors. 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 "../codecs/rt5677.h"
39
40 #include "tegra_asoc_utils.h"
41
42 #define DRV_NAME "tegra-snd-rt5677"
43
44 struct tegra_rt5677 {
45 struct tegra_asoc_utils_data util_data;
46 int gpio_hp_det;
47 int gpio_hp_en;
48 int gpio_mic_present;
49 int gpio_dmic_clk_en;
50 };
51
tegra_rt5677_asoc_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)52 static int tegra_rt5677_asoc_hw_params(struct snd_pcm_substream *substream,
53 struct snd_pcm_hw_params *params)
54 {
55 struct snd_soc_pcm_runtime *rtd = substream->private_data;
56 struct snd_soc_dai *codec_dai = rtd->codec_dai;
57 struct snd_soc_card *card = rtd->card;
58 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
59 int srate, mclk, err;
60
61 srate = params_rate(params);
62 mclk = 256 * srate;
63
64 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
65 if (err < 0) {
66 dev_err(card->dev, "Can't configure clocks\n");
67 return err;
68 }
69
70 err = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, mclk,
71 SND_SOC_CLOCK_IN);
72 if (err < 0) {
73 dev_err(card->dev, "codec_dai clock not set\n");
74 return err;
75 }
76
77 return 0;
78 }
79
tegra_rt5677_event_hp(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)80 static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
81 struct snd_kcontrol *k, int event)
82 {
83 struct snd_soc_dapm_context *dapm = w->dapm;
84 struct snd_soc_card *card = dapm->card;
85 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
86
87 if (!gpio_is_valid(machine->gpio_hp_en))
88 return 0;
89
90 gpio_set_value_cansleep(machine->gpio_hp_en,
91 SND_SOC_DAPM_EVENT_ON(event));
92
93 return 0;
94 }
95
96 static const struct snd_soc_ops tegra_rt5677_ops = {
97 .hw_params = tegra_rt5677_asoc_hw_params,
98 };
99
100 static struct snd_soc_jack tegra_rt5677_hp_jack;
101
102 static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
103 .pin = "Headphone",
104 .mask = SND_JACK_HEADPHONE,
105 };
106 static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
107 .name = "Headphone detection",
108 .report = SND_JACK_HEADPHONE,
109 .debounce_time = 150,
110 };
111
112 static struct snd_soc_jack tegra_rt5677_mic_jack;
113
114 static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
115 .pin = "Headset Mic",
116 .mask = SND_JACK_MICROPHONE,
117 };
118
119 static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
120 .name = "Headset Mic detection",
121 .report = SND_JACK_MICROPHONE,
122 .debounce_time = 150,
123 .invert = 1
124 };
125
126 static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
127 SND_SOC_DAPM_SPK("Speaker", NULL),
128 SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
129 SND_SOC_DAPM_MIC("Headset Mic", NULL),
130 SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
131 SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
132 };
133
134 static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
135 SOC_DAPM_PIN_SWITCH("Speaker"),
136 SOC_DAPM_PIN_SWITCH("Headphone"),
137 SOC_DAPM_PIN_SWITCH("Headset Mic"),
138 SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
139 SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
140 };
141
tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime * rtd)142 static int tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime *rtd)
143 {
144 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
145
146 snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
147 &tegra_rt5677_hp_jack,
148 &tegra_rt5677_hp_jack_pins, 1);
149
150 if (gpio_is_valid(machine->gpio_hp_det)) {
151 tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
152 snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
153 &tegra_rt5677_hp_jack_gpio);
154 }
155
156
157 snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
158 &tegra_rt5677_mic_jack,
159 &tegra_rt5677_mic_jack_pins, 1);
160
161 if (gpio_is_valid(machine->gpio_mic_present)) {
162 tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
163 snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
164 &tegra_rt5677_mic_jack_gpio);
165 }
166
167 snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
168
169 return 0;
170 }
171
172 static struct snd_soc_dai_link tegra_rt5677_dai = {
173 .name = "RT5677",
174 .stream_name = "RT5677 PCM",
175 .codec_dai_name = "rt5677-aif1",
176 .init = tegra_rt5677_asoc_init,
177 .ops = &tegra_rt5677_ops,
178 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
179 SND_SOC_DAIFMT_CBS_CFS,
180 };
181
182 static struct snd_soc_card snd_soc_tegra_rt5677 = {
183 .name = "tegra-rt5677",
184 .owner = THIS_MODULE,
185 .dai_link = &tegra_rt5677_dai,
186 .num_links = 1,
187 .controls = tegra_rt5677_controls,
188 .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
189 .dapm_widgets = tegra_rt5677_dapm_widgets,
190 .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
191 .fully_routed = true,
192 };
193
tegra_rt5677_probe(struct platform_device * pdev)194 static int tegra_rt5677_probe(struct platform_device *pdev)
195 {
196 struct device_node *np = pdev->dev.of_node;
197 struct snd_soc_card *card = &snd_soc_tegra_rt5677;
198 struct tegra_rt5677 *machine;
199 int ret;
200
201 machine = devm_kzalloc(&pdev->dev,
202 sizeof(struct tegra_rt5677), GFP_KERNEL);
203 if (!machine)
204 return -ENOMEM;
205
206 card->dev = &pdev->dev;
207 snd_soc_card_set_drvdata(card, machine);
208
209 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
210 if (machine->gpio_hp_det == -EPROBE_DEFER)
211 return -EPROBE_DEFER;
212
213 machine->gpio_mic_present = of_get_named_gpio(np,
214 "nvidia,mic-present-gpios", 0);
215 if (machine->gpio_mic_present == -EPROBE_DEFER)
216 return -EPROBE_DEFER;
217
218 machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
219 if (machine->gpio_hp_en == -EPROBE_DEFER)
220 return -EPROBE_DEFER;
221 if (gpio_is_valid(machine->gpio_hp_en)) {
222 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
223 GPIOF_OUT_INIT_LOW, "hp_en");
224 if (ret) {
225 dev_err(card->dev, "cannot get hp_en gpio\n");
226 return ret;
227 }
228 }
229
230 machine->gpio_dmic_clk_en = of_get_named_gpio(np,
231 "nvidia,dmic-clk-en-gpios", 0);
232 if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
233 return -EPROBE_DEFER;
234 if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
235 ret = devm_gpio_request_one(&pdev->dev,
236 machine->gpio_dmic_clk_en,
237 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
238 if (ret) {
239 dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
240 return ret;
241 }
242 }
243
244 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
245 if (ret)
246 goto err;
247
248 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
249 if (ret)
250 goto err;
251
252 tegra_rt5677_dai.codec_of_node = of_parse_phandle(np,
253 "nvidia,audio-codec", 0);
254 if (!tegra_rt5677_dai.codec_of_node) {
255 dev_err(&pdev->dev,
256 "Property 'nvidia,audio-codec' missing or invalid\n");
257 ret = -EINVAL;
258 goto err;
259 }
260
261 tegra_rt5677_dai.cpu_of_node = of_parse_phandle(np,
262 "nvidia,i2s-controller", 0);
263 if (!tegra_rt5677_dai.cpu_of_node) {
264 dev_err(&pdev->dev,
265 "Property 'nvidia,i2s-controller' missing or invalid\n");
266 ret = -EINVAL;
267 goto err_put_codec_of_node;
268 }
269 tegra_rt5677_dai.platform_of_node = tegra_rt5677_dai.cpu_of_node;
270
271 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
272 if (ret)
273 goto err_put_cpu_of_node;
274
275 ret = snd_soc_register_card(card);
276 if (ret) {
277 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
278 ret);
279 goto err_fini_utils;
280 }
281
282 return 0;
283
284 err_fini_utils:
285 tegra_asoc_utils_fini(&machine->util_data);
286 err_put_cpu_of_node:
287 of_node_put(tegra_rt5677_dai.cpu_of_node);
288 tegra_rt5677_dai.cpu_of_node = NULL;
289 tegra_rt5677_dai.platform_of_node = NULL;
290 err_put_codec_of_node:
291 of_node_put(tegra_rt5677_dai.codec_of_node);
292 tegra_rt5677_dai.codec_of_node = NULL;
293 err:
294 return ret;
295 }
296
tegra_rt5677_remove(struct platform_device * pdev)297 static int tegra_rt5677_remove(struct platform_device *pdev)
298 {
299 struct snd_soc_card *card = platform_get_drvdata(pdev);
300 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
301
302 snd_soc_unregister_card(card);
303
304 tegra_asoc_utils_fini(&machine->util_data);
305
306 tegra_rt5677_dai.platform_of_node = NULL;
307 of_node_put(tegra_rt5677_dai.codec_of_node);
308 tegra_rt5677_dai.codec_of_node = NULL;
309 of_node_put(tegra_rt5677_dai.cpu_of_node);
310 tegra_rt5677_dai.cpu_of_node = NULL;
311
312 return 0;
313 }
314
315 static const struct of_device_id tegra_rt5677_of_match[] = {
316 { .compatible = "nvidia,tegra-audio-rt5677", },
317 {},
318 };
319
320 static struct platform_driver tegra_rt5677_driver = {
321 .driver = {
322 .name = DRV_NAME,
323 .pm = &snd_soc_pm_ops,
324 .of_match_table = tegra_rt5677_of_match,
325 },
326 .probe = tegra_rt5677_probe,
327 .remove = tegra_rt5677_remove,
328 };
329 module_platform_driver(tegra_rt5677_driver);
330
331 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
332 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
333 MODULE_LICENSE("GPL v2");
334 MODULE_ALIAS("platform:" DRV_NAME);
335 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);
336
