1 // SPDX-License-Identifier: GPL-2.0-only
3 * tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
5 * Author: Stephen Warren <swarren@nvidia.com>
6 * Copyright (C) 2010-2012 - NVIDIA, Inc.
8 * Based on code copyright/by:
10 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
12 * Copyright 2007 Wolfson Microelectronics PLC.
13 * Author: Graeme Gregory
14 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/slab.h>
20 #include <linux/gpio.h>
21 #include <linux/of_gpio.h>
23 #include <sound/core.h>
24 #include <sound/jack.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
29 #include "../codecs/wm8903.h"
31 #include "tegra_asoc_utils.h"
33 #define DRV_NAME "tegra-snd-wm8903"
41 struct tegra_asoc_utils_data util_data;
44 static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
45 struct snd_pcm_hw_params *params)
47 struct snd_soc_pcm_runtime *rtd = substream->private_data;
48 struct snd_soc_dai *codec_dai = rtd->codec_dai;
49 struct snd_soc_card *card = rtd->card;
50 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
54 srate = params_rate(params);
65 /* FIXME: Codec only requires >= 3MHz if OSR==0 */
66 while (mclk < 6000000)
69 err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
71 dev_err(card->dev, "Can't configure clocks\n");
75 err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
78 dev_err(card->dev, "codec_dai clock not set\n");
85 static const struct snd_soc_ops tegra_wm8903_ops = {
86 .hw_params = tegra_wm8903_hw_params,
89 static struct snd_soc_jack tegra_wm8903_hp_jack;
91 static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
93 .pin = "Headphone Jack",
94 .mask = SND_JACK_HEADPHONE,
98 static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
99 .name = "headphone detect",
100 .report = SND_JACK_HEADPHONE,
101 .debounce_time = 150,
105 static struct snd_soc_jack tegra_wm8903_mic_jack;
107 static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
110 .mask = SND_JACK_MICROPHONE,
114 static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
115 struct snd_kcontrol *k, int event)
117 struct snd_soc_dapm_context *dapm = w->dapm;
118 struct snd_soc_card *card = dapm->card;
119 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
121 if (!gpio_is_valid(machine->gpio_spkr_en))
124 gpio_set_value_cansleep(machine->gpio_spkr_en,
125 SND_SOC_DAPM_EVENT_ON(event));
130 static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
131 struct snd_kcontrol *k, int event)
133 struct snd_soc_dapm_context *dapm = w->dapm;
134 struct snd_soc_card *card = dapm->card;
135 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
137 if (!gpio_is_valid(machine->gpio_hp_mute))
140 gpio_set_value_cansleep(machine->gpio_hp_mute,
141 !SND_SOC_DAPM_EVENT_ON(event));
146 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
147 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
148 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
149 SND_SOC_DAPM_MIC("Mic Jack", NULL),
152 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
153 SOC_DAPM_PIN_SWITCH("Int Spk"),
156 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
158 struct snd_soc_dai *codec_dai = rtd->codec_dai;
159 struct snd_soc_component *component = codec_dai->component;
160 struct snd_soc_card *card = rtd->card;
161 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
164 if (gpio_is_valid(machine->gpio_hp_det)) {
165 tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det;
166 snd_soc_card_jack_new(rtd->card, "Headphone Jack",
167 SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack,
168 tegra_wm8903_hp_jack_pins,
169 ARRAY_SIZE(tegra_wm8903_hp_jack_pins));
170 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
172 &tegra_wm8903_hp_jack_gpio);
175 if (of_property_read_bool(card->dev->of_node, "nvidia,headset"))
176 shrt = SND_JACK_MICROPHONE;
178 snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
179 &tegra_wm8903_mic_jack,
180 tegra_wm8903_mic_jack_pins,
181 ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
182 wm8903_mic_detect(component, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
185 snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
190 static int tegra_wm8903_remove(struct snd_soc_card *card)
192 struct snd_soc_pcm_runtime *rtd =
193 snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
194 struct snd_soc_dai *codec_dai = rtd->codec_dai;
195 struct snd_soc_component *component = codec_dai->component;
197 wm8903_mic_detect(component, NULL, 0, 0);
202 SND_SOC_DAILINK_DEFS(hifi,
203 DAILINK_COMP_ARRAY(COMP_EMPTY()),
204 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")),
205 DAILINK_COMP_ARRAY(COMP_EMPTY()));
207 static struct snd_soc_dai_link tegra_wm8903_dai = {
209 .stream_name = "WM8903 PCM",
210 .init = tegra_wm8903_init,
211 .ops = &tegra_wm8903_ops,
212 .dai_fmt = SND_SOC_DAIFMT_I2S |
213 SND_SOC_DAIFMT_NB_NF |
214 SND_SOC_DAIFMT_CBS_CFS,
215 SND_SOC_DAILINK_REG(hifi),
218 static struct snd_soc_card snd_soc_tegra_wm8903 = {
219 .name = "tegra-wm8903",
220 .driver_name = "tegra",
221 .owner = THIS_MODULE,
222 .dai_link = &tegra_wm8903_dai,
224 .remove = tegra_wm8903_remove,
225 .controls = tegra_wm8903_controls,
226 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
227 .dapm_widgets = tegra_wm8903_dapm_widgets,
228 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
229 .fully_routed = true,
232 static int tegra_wm8903_driver_probe(struct platform_device *pdev)
234 struct device_node *np = pdev->dev.of_node;
235 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
236 struct tegra_wm8903 *machine;
239 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
244 card->dev = &pdev->dev;
245 snd_soc_card_set_drvdata(card, machine);
247 machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios",
249 if (machine->gpio_spkr_en == -EPROBE_DEFER)
250 return -EPROBE_DEFER;
251 if (gpio_is_valid(machine->gpio_spkr_en)) {
252 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en,
253 GPIOF_OUT_INIT_LOW, "spkr_en");
255 dev_err(card->dev, "cannot get spkr_en gpio\n");
260 machine->gpio_hp_mute = of_get_named_gpio(np, "nvidia,hp-mute-gpios",
262 if (machine->gpio_hp_mute == -EPROBE_DEFER)
263 return -EPROBE_DEFER;
264 if (gpio_is_valid(machine->gpio_hp_mute)) {
265 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_mute,
266 GPIOF_OUT_INIT_HIGH, "hp_mute");
268 dev_err(card->dev, "cannot get hp_mute gpio\n");
273 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
274 if (machine->gpio_hp_det == -EPROBE_DEFER)
275 return -EPROBE_DEFER;
277 machine->gpio_int_mic_en = of_get_named_gpio(np,
278 "nvidia,int-mic-en-gpios", 0);
279 if (machine->gpio_int_mic_en == -EPROBE_DEFER)
280 return -EPROBE_DEFER;
281 if (gpio_is_valid(machine->gpio_int_mic_en)) {
282 /* Disable int mic; enable signal is active-high */
283 ret = devm_gpio_request_one(&pdev->dev,
284 machine->gpio_int_mic_en,
285 GPIOF_OUT_INIT_LOW, "int_mic_en");
287 dev_err(card->dev, "cannot get int_mic_en gpio\n");
292 machine->gpio_ext_mic_en = of_get_named_gpio(np,
293 "nvidia,ext-mic-en-gpios", 0);
294 if (machine->gpio_ext_mic_en == -EPROBE_DEFER)
295 return -EPROBE_DEFER;
296 if (gpio_is_valid(machine->gpio_ext_mic_en)) {
297 /* Enable ext mic; enable signal is active-low */
298 ret = devm_gpio_request_one(&pdev->dev,
299 machine->gpio_ext_mic_en,
300 GPIOF_OUT_INIT_LOW, "ext_mic_en");
302 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
307 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
311 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
315 tegra_wm8903_dai.codecs->of_node = of_parse_phandle(np,
316 "nvidia,audio-codec", 0);
317 if (!tegra_wm8903_dai.codecs->of_node) {
319 "Property 'nvidia,audio-codec' missing or invalid\n");
324 tegra_wm8903_dai.cpus->of_node = of_parse_phandle(np,
325 "nvidia,i2s-controller", 0);
326 if (!tegra_wm8903_dai.cpus->of_node) {
328 "Property 'nvidia,i2s-controller' missing or invalid\n");
333 tegra_wm8903_dai.platforms->of_node = tegra_wm8903_dai.cpus->of_node;
335 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
339 ret = snd_soc_register_card(card);
341 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
349 tegra_asoc_utils_fini(&machine->util_data);
354 static int tegra_wm8903_driver_remove(struct platform_device *pdev)
356 struct snd_soc_card *card = platform_get_drvdata(pdev);
357 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
359 snd_soc_unregister_card(card);
361 tegra_asoc_utils_fini(&machine->util_data);
366 static const struct of_device_id tegra_wm8903_of_match[] = {
367 { .compatible = "nvidia,tegra-audio-wm8903", },
371 static struct platform_driver tegra_wm8903_driver = {
374 .pm = &snd_soc_pm_ops,
375 .of_match_table = tegra_wm8903_of_match,
377 .probe = tegra_wm8903_driver_probe,
378 .remove = tegra_wm8903_driver_remove,
380 module_platform_driver(tegra_wm8903_driver);
382 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
383 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
384 MODULE_LICENSE("GPL");
385 MODULE_ALIAS("platform:" DRV_NAME);
386 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);