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 .driver_name = "tegra",
179 .owner = THIS_MODULE,
180 .dai_link = &tegra_rt5677_dai,
181 .num_links = 1,
182 .controls = tegra_rt5677_controls,
183 .num_controls = ARRAY_SIZE(tegra_rt5677_controls),
184 .dapm_widgets = tegra_rt5677_dapm_widgets,
185 .num_dapm_widgets = ARRAY_SIZE(tegra_rt5677_dapm_widgets),
186 .fully_routed = true,
187 };
188
tegra_rt5677_probe(struct platform_device * pdev)189 static int tegra_rt5677_probe(struct platform_device *pdev)
190 {
191 struct device_node *np = pdev->dev.of_node;
192 struct snd_soc_card *card = &snd_soc_tegra_rt5677;
193 struct tegra_rt5677 *machine;
194 int ret;
195
196 machine = devm_kzalloc(&pdev->dev,
197 sizeof(struct tegra_rt5677), GFP_KERNEL);
198 if (!machine)
199 return -ENOMEM;
200
201 card->dev = &pdev->dev;
202 snd_soc_card_set_drvdata(card, machine);
203
204 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
205 if (machine->gpio_hp_det == -EPROBE_DEFER)
206 return -EPROBE_DEFER;
207
208 machine->gpio_mic_present = of_get_named_gpio(np,
209 "nvidia,mic-present-gpios", 0);
210 if (machine->gpio_mic_present == -EPROBE_DEFER)
211 return -EPROBE_DEFER;
212
213 machine->gpio_hp_en = of_get_named_gpio(np, "nvidia,hp-en-gpios", 0);
214 if (machine->gpio_hp_en == -EPROBE_DEFER)
215 return -EPROBE_DEFER;
216 if (gpio_is_valid(machine->gpio_hp_en)) {
217 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_en,
218 GPIOF_OUT_INIT_LOW, "hp_en");
219 if (ret) {
220 dev_err(card->dev, "cannot get hp_en gpio\n");
221 return ret;
222 }
223 }
224
225 machine->gpio_dmic_clk_en = of_get_named_gpio(np,
226 "nvidia,dmic-clk-en-gpios", 0);
227 if (machine->gpio_dmic_clk_en == -EPROBE_DEFER)
228 return -EPROBE_DEFER;
229 if (gpio_is_valid(machine->gpio_dmic_clk_en)) {
230 ret = devm_gpio_request_one(&pdev->dev,
231 machine->gpio_dmic_clk_en,
232 GPIOF_OUT_INIT_HIGH, "dmic_clk_en");
233 if (ret) {
234 dev_err(card->dev, "cannot get dmic_clk_en gpio\n");
235 return ret;
236 }
237 }
238
239 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
240 if (ret)
241 goto err;
242
243 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
244 if (ret)
245 goto err;
246
247 tegra_rt5677_dai.codecs->of_node = of_parse_phandle(np,
248 "nvidia,audio-codec", 0);
249 if (!tegra_rt5677_dai.codecs->of_node) {
250 dev_err(&pdev->dev,
251 "Property 'nvidia,audio-codec' missing or invalid\n");
252 ret = -EINVAL;
253 goto err;
254 }
255
256 tegra_rt5677_dai.cpus->of_node = of_parse_phandle(np,
257 "nvidia,i2s-controller", 0);
258 if (!tegra_rt5677_dai.cpus->of_node) {
259 dev_err(&pdev->dev,
260 "Property 'nvidia,i2s-controller' missing or invalid\n");
261 ret = -EINVAL;
262 goto err_put_codec_of_node;
263 }
264 tegra_rt5677_dai.platforms->of_node = tegra_rt5677_dai.cpus->of_node;
265
266 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
267 if (ret)
268 goto err_put_cpu_of_node;
269
270 ret = snd_soc_register_card(card);
271 if (ret) {
272 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
273 ret);
274 goto err_put_cpu_of_node;
275 }
276
277 return 0;
278
279 err_put_cpu_of_node:
280 of_node_put(tegra_rt5677_dai.cpus->of_node);
281 tegra_rt5677_dai.cpus->of_node = NULL;
282 tegra_rt5677_dai.platforms->of_node = NULL;
283 err_put_codec_of_node:
284 of_node_put(tegra_rt5677_dai.codecs->of_node);
285 tegra_rt5677_dai.codecs->of_node = NULL;
286 err:
287 return ret;
288 }
289
tegra_rt5677_remove(struct platform_device * pdev)290 static int tegra_rt5677_remove(struct platform_device *pdev)
291 {
292 struct snd_soc_card *card = platform_get_drvdata(pdev);
293
294 snd_soc_unregister_card(card);
295
296 tegra_rt5677_dai.platforms->of_node = NULL;
297 of_node_put(tegra_rt5677_dai.codecs->of_node);
298 tegra_rt5677_dai.codecs->of_node = NULL;
299 of_node_put(tegra_rt5677_dai.cpus->of_node);
300 tegra_rt5677_dai.cpus->of_node = NULL;
301
302 return 0;
303 }
304
305 static const struct of_device_id tegra_rt5677_of_match[] = {
306 { .compatible = "nvidia,tegra-audio-rt5677", },
307 {},
308 };
309
310 static struct platform_driver tegra_rt5677_driver = {
311 .driver = {
312 .name = DRV_NAME,
313 .pm = &snd_soc_pm_ops,
314 .of_match_table = tegra_rt5677_of_match,
315 },
316 .probe = tegra_rt5677_probe,
317 .remove = tegra_rt5677_remove,
318 };
319 module_platform_driver(tegra_rt5677_driver);
320
321 MODULE_AUTHOR("Anatol Pomozov <anatol@google.com>");
322 MODULE_DESCRIPTION("Tegra+RT5677 machine ASoC driver");
323 MODULE_LICENSE("GPL v2");
324 MODULE_ALIAS("platform:" DRV_NAME);
325 MODULE_DEVICE_TABLE(of, tegra_rt5677_of_match);
326