1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * tegra_rt5677.c - Tegra machine ASoC driver for boards using RT5677 codec.
4 *
5 * Copyright (c) 2014, The Chromium OS Authors. All rights reserved.
6 *
7 * Based on code copyright/by:
8 *
9 * Copyright (C) 2010-2012 - NVIDIA, Inc.
10 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
11 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
12 * Copyright 2007 Wolfson Microelectronics PLC.
13 */
14
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
17 #include <linux/slab.h>
18 #include <linux/gpio.h>
19 #include <linux/of_gpio.h>
20
21 #include <sound/core.h>
22 #include <sound/jack.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26
27 #include "../codecs/rt5677.h"
28
29 #include "tegra_asoc_utils.h"
30
31 #define DRV_NAME "tegra-snd-rt5677"
32
33 struct tegra_rt5677 {
34 struct tegra_asoc_utils_data util_data;
35 int gpio_hp_det;
36 int gpio_hp_en;
37 int gpio_mic_present;
38 int gpio_dmic_clk_en;
39 };
40
tegra_rt5677_asoc_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)41 static int tegra_rt5677_asoc_hw_params(struct snd_pcm_substream *substream,
42 struct snd_pcm_hw_params *params)
43 {
44 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
45 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
46 struct snd_soc_card *card = rtd->card;
47 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
48 int srate, mclk, err;
49
50 srate = params_rate(params);
51 mclk = 256 * srate;
52
53 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
54 if (err < 0) {
55 dev_err(card->dev, "Can't configure clocks\n");
56 return err;
57 }
58
59 err = snd_soc_dai_set_sysclk(codec_dai, RT5677_SCLK_S_MCLK, mclk,
60 SND_SOC_CLOCK_IN);
61 if (err < 0) {
62 dev_err(card->dev, "codec_dai clock not set\n");
63 return err;
64 }
65
66 return 0;
67 }
68
tegra_rt5677_event_hp(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)69 static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
70 struct snd_kcontrol *k, int event)
71 {
72 struct snd_soc_dapm_context *dapm = w->dapm;
73 struct snd_soc_card *card = dapm->card;
74 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(card);
75
76 if (!gpio_is_valid(machine->gpio_hp_en))
77 return 0;
78
79 gpio_set_value_cansleep(machine->gpio_hp_en,
80 SND_SOC_DAPM_EVENT_ON(event));
81
82 return 0;
83 }
84
85 static const struct snd_soc_ops tegra_rt5677_ops = {
86 .hw_params = tegra_rt5677_asoc_hw_params,
87 };
88
89 static struct snd_soc_jack tegra_rt5677_hp_jack;
90
91 static struct snd_soc_jack_pin tegra_rt5677_hp_jack_pins = {
92 .pin = "Headphone",
93 .mask = SND_JACK_HEADPHONE,
94 };
95 static struct snd_soc_jack_gpio tegra_rt5677_hp_jack_gpio = {
96 .name = "Headphone detection",
97 .report = SND_JACK_HEADPHONE,
98 .debounce_time = 150,
99 };
100
101 static struct snd_soc_jack tegra_rt5677_mic_jack;
102
103 static struct snd_soc_jack_pin tegra_rt5677_mic_jack_pins = {
104 .pin = "Headset Mic",
105 .mask = SND_JACK_MICROPHONE,
106 };
107
108 static struct snd_soc_jack_gpio tegra_rt5677_mic_jack_gpio = {
109 .name = "Headset Mic detection",
110 .report = SND_JACK_MICROPHONE,
111 .debounce_time = 150,
112 .invert = 1
113 };
114
115 static const struct snd_soc_dapm_widget tegra_rt5677_dapm_widgets[] = {
116 SND_SOC_DAPM_SPK("Speaker", NULL),
117 SND_SOC_DAPM_HP("Headphone", tegra_rt5677_event_hp),
118 SND_SOC_DAPM_MIC("Headset Mic", NULL),
119 SND_SOC_DAPM_MIC("Internal Mic 1", NULL),
120 SND_SOC_DAPM_MIC("Internal Mic 2", NULL),
121 };
122
123 static const struct snd_kcontrol_new tegra_rt5677_controls[] = {
124 SOC_DAPM_PIN_SWITCH("Speaker"),
125 SOC_DAPM_PIN_SWITCH("Headphone"),
126 SOC_DAPM_PIN_SWITCH("Headset Mic"),
127 SOC_DAPM_PIN_SWITCH("Internal Mic 1"),
128 SOC_DAPM_PIN_SWITCH("Internal Mic 2"),
129 };
130
tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime * rtd)131 static int tegra_rt5677_asoc_init(struct snd_soc_pcm_runtime *rtd)
132 {
133 struct tegra_rt5677 *machine = snd_soc_card_get_drvdata(rtd->card);
134
135 snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
136 &tegra_rt5677_hp_jack,
137 &tegra_rt5677_hp_jack_pins, 1);
138
139 if (gpio_is_valid(machine->gpio_hp_det)) {
140 tegra_rt5677_hp_jack_gpio.gpio = machine->gpio_hp_det;
141 snd_soc_jack_add_gpios(&tegra_rt5677_hp_jack, 1,
142 &tegra_rt5677_hp_jack_gpio);
143 }
144
145
146 snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
147 &tegra_rt5677_mic_jack,
148 &tegra_rt5677_mic_jack_pins, 1);
149
150 if (gpio_is_valid(machine->gpio_mic_present)) {
151 tegra_rt5677_mic_jack_gpio.gpio = machine->gpio_mic_present;
152 snd_soc_jack_add_gpios(&tegra_rt5677_mic_jack, 1,
153 &tegra_rt5677_mic_jack_gpio);
154 }
155
156 snd_soc_dapm_force_enable_pin(&rtd->card->dapm, "MICBIAS1");
157
158 return 0;
159 }
160
161 SND_SOC_DAILINK_DEFS(pcm,
162 DAILINK_COMP_ARRAY(COMP_EMPTY()),
163 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "rt5677-aif1")),
164 DAILINK_COMP_ARRAY(COMP_EMPTY()));
165
166 static struct snd_soc_dai_link tegra_rt5677_dai = {
167 .name = "RT5677",
168 .stream_name = "RT5677 PCM",
169 .init = tegra_rt5677_asoc_init,
170 .ops = &tegra_rt5677_ops,
171 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
172 SND_SOC_DAIFMT_CBS_CFS,
173 SND_SOC_DAILINK_REG(pcm),
174 };
175
176 static struct snd_soc_card snd_soc_tegra_rt5677 = {
177 .name = "tegra-rt5677",
178 .owner = THIS_MODULE,
179 .dai_link = &tegra_rt5677_dai,
180 .num_links = 1,
181 .controls = tegra_rt5677_controls,
182 .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
183 .dapm_widgets = tegra_rt5677_dapm_widgets,
184 .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
185 .fully_routed = true,
186 };
187
tegra_rt5677_probe(struct platform_device * pdev)188 static int tegra_rt5677_probe(struct platform_device *pdev)
189 {
190 struct device_node *np = pdev->dev.of_node;
191 struct snd_soc_card *card = &snd_soc_tegra_rt5677;
192 struct tegra_rt5677 *machine;
193 int ret;
194
195 machine = devm_kzalloc(&pdev->dev,
196 sizeof(struct tegra_rt5677), GFP_KERNEL);
197 if (!machine)
198 return -ENOMEM;
199
200 card->dev = &pdev->dev;
201 snd_soc_card_set_drvdata(card, machine);
202
203 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
204 if (machine->gpio_hp_det == -EPROBE_DEFER)
205 return -EPROBE_DEFER;
206
207 machine->gpio_mic_present = of_get_named_gpio(np,
208 "nvidia,mic-present-gpios", 0);
209 if (machine->gpio_mic_present == -EPROBE_DEFER)
210 return -EPROBE_DEFER;
211
212 machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
213 if (machine->gpio_hp_en == -EPROBE_DEFER)
214 return -EPROBE_DEFER;
215 if (gpio_is_valid(machine->gpio_hp_en)) {
216 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
217 GPIOF_OUT_INIT_LOW, "hp_en");
218 if (ret) {
219 dev_err(card->dev, "cannot get hp_en gpio\n");
220 return ret;
221 }
222 }
223
224 machine->gpio_dmic_clk_en = of_get_named_gpio(np,
225 "nvidia,dmic-clk-en-gpios", 0);
226 if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
227 return -EPROBE_DEFER;
228 if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
229 ret = devm_gpio_request_one(&pdev->dev,
230 machine->gpio_dmic_clk_en,
231 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
232 if (ret) {
233 dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
234 return ret;
235 }
236 }
237
238 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
239 if (ret)
240 goto err;
241
242 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
243 if (ret)
244 goto err;
245
246 tegra_rt5677_dai.codecs->of_node = of_parse_phandle(np,
247 "nvidia,audio-codec", 0);
248 if (!tegra_rt5677_dai.codecs->of_node) {
249 dev_err(&pdev->dev,
250 "Property 'nvidia,audio-codec' missing or invalid\n");
251 ret = -EINVAL;
252 goto err;
253 }
254
255 tegra_rt5677_dai.cpus->of_node = of_parse_phandle(np,
256 "nvidia,i2s-controller", 0);
257 if (!tegra_rt5677_dai.cpus->of_node) {
258 dev_err(&pdev->dev,
259 "Property 'nvidia,i2s-controller' missing or invalid\n");
260 ret = -EINVAL;
261 goto err_put_codec_of_node;
262 }
263 tegra_rt5677_dai.platforms->of_node = tegra_rt5677_dai.cpus->of_node;
264
265 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
266 if (ret)
267 goto err_put_cpu_of_node;
268
269 ret = snd_soc_register_card(card);
270 if (ret) {
271 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
272 ret);
273 goto err_put_cpu_of_node;
274 }
275
276 return 0;
277
278 err_put_cpu_of_node:
279 of_node_put(tegra_rt5677_dai.cpus->of_node);
280 tegra_rt5677_dai.cpus->of_node = NULL;
281 tegra_rt5677_dai.platforms->of_node = NULL;
282 err_put_codec_of_node:
283 of_node_put(tegra_rt5677_dai.codecs->of_node);
284 tegra_rt5677_dai.codecs->of_node = NULL;
285 err:
286 return ret;
287 }
288
tegra_rt5677_remove(struct platform_device * pdev)289 static int tegra_rt5677_remove(struct platform_device *pdev)
290 {
291 struct snd_soc_card *card = platform_get_drvdata(pdev);
292
293 snd_soc_unregister_card(card);
294
295 tegra_rt5677_dai.platforms->of_node = NULL;
296 of_node_put(tegra_rt5677_dai.codecs->of_node);
297 tegra_rt5677_dai.codecs->of_node = NULL;
298 of_node_put(tegra_rt5677_dai.cpus->of_node);
299 tegra_rt5677_dai.cpus->of_node = NULL;
300
301 return 0;
302 }
303
304 static const struct of_device_id tegra_rt5677_of_match[] = {
305 { .compatible = "nvidia,tegra-audio-rt5677", },
306 {},
307 };
308
309 static struct platform_driver tegra_rt5677_driver = {
310 .driver = {
311 .name = DRV_NAME,
312 .pm = &snd_soc_pm_ops,
313 .of_match_table = tegra_rt5677_of_match,
314 },
315 .probe = tegra_rt5677_probe,
316 .remove = tegra_rt5677_remove,
317 };
318 module_platform_driver(tegra_rt5677_driver);
319
320 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
321 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
322 MODULE_LICENSE("GPL v2");
323 MODULE_ALIAS("platform:" DRV_NAME);
324 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);
325