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 = asoc_substream_to_rtd(substream);
48 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
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 int tegra_wm8903_event_int_mic(struct snd_soc_dapm_widget *w,
147 struct snd_kcontrol *k, int event)
149 struct snd_soc_dapm_context *dapm = w->dapm;
150 struct snd_soc_card *card = dapm->card;
151 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
153 if (!gpio_is_valid(machine->gpio_int_mic_en))
156 gpio_set_value_cansleep(machine->gpio_int_mic_en,
157 SND_SOC_DAPM_EVENT_ON(event));
162 static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
163 SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
164 SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
165 SND_SOC_DAPM_MIC("Mic Jack", NULL),
166 SND_SOC_DAPM_MIC("Int Mic", tegra_wm8903_event_int_mic),
169 static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
170 SOC_DAPM_PIN_SWITCH("Int Spk"),
171 SOC_DAPM_PIN_SWITCH("Int Mic"),
174 static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
176 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
177 struct snd_soc_component *component = codec_dai->component;
178 struct snd_soc_card *card = rtd->card;
179 struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
182 if (gpio_is_valid(machine->gpio_hp_det)) {
183 tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det;
184 snd_soc_card_jack_new(rtd->card, "Headphone Jack",
185 SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack,
186 tegra_wm8903_hp_jack_pins,
187 ARRAY_SIZE(tegra_wm8903_hp_jack_pins));
188 snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
190 &tegra_wm8903_hp_jack_gpio);
193 if (of_property_read_bool(card->dev->of_node, "nvidia,headset"))
194 shrt = SND_JACK_MICROPHONE;
196 snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
197 &tegra_wm8903_mic_jack,
198 tegra_wm8903_mic_jack_pins,
199 ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
200 wm8903_mic_detect(component, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
203 snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
208 static int tegra_wm8903_remove(struct snd_soc_card *card)
210 struct snd_soc_pcm_runtime *rtd =
211 snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
212 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
213 struct snd_soc_component *component = codec_dai->component;
215 wm8903_mic_detect(component, NULL, 0, 0);
220 SND_SOC_DAILINK_DEFS(hifi,
221 DAILINK_COMP_ARRAY(COMP_EMPTY()),
222 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")),
223 DAILINK_COMP_ARRAY(COMP_EMPTY()));
225 static struct snd_soc_dai_link tegra_wm8903_dai = {
227 .stream_name = "WM8903 PCM",
228 .init = tegra_wm8903_init,
229 .ops = &tegra_wm8903_ops,
230 .dai_fmt = SND_SOC_DAIFMT_I2S |
231 SND_SOC_DAIFMT_NB_NF |
232 SND_SOC_DAIFMT_CBS_CFS,
233 SND_SOC_DAILINK_REG(hifi),
236 static struct snd_soc_card snd_soc_tegra_wm8903 = {
237 .name = "tegra-wm8903",
238 .driver_name = "tegra",
239 .owner = THIS_MODULE,
240 .dai_link = &tegra_wm8903_dai,
242 .remove = tegra_wm8903_remove,
243 .controls = tegra_wm8903_controls,
244 .num_controls = ARRAY_SIZE(tegra_wm8903_controls),
245 .dapm_widgets = tegra_wm8903_dapm_widgets,
246 .num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
247 .fully_routed = true,
250 static int tegra_wm8903_driver_probe(struct platform_device *pdev)
252 struct device_node *np = pdev->dev.of_node;
253 struct snd_soc_card *card = &snd_soc_tegra_wm8903;
254 struct tegra_wm8903 *machine;
257 machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
262 card->dev = &pdev->dev;
263 snd_soc_card_set_drvdata(card, machine);
265 machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios",
267 if (machine->gpio_spkr_en == -EPROBE_DEFER)
268 return -EPROBE_DEFER;
269 if (gpio_is_valid(machine->gpio_spkr_en)) {
270 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en,
271 GPIOF_OUT_INIT_LOW, "spkr_en");
273 dev_err(card->dev, "cannot get spkr_en gpio\n");
278 machine->gpio_hp_mute = of_get_named_gpio(np, "nvidia,hp-mute-gpios",
280 if (machine->gpio_hp_mute == -EPROBE_DEFER)
281 return -EPROBE_DEFER;
282 if (gpio_is_valid(machine->gpio_hp_mute)) {
283 ret = devm_gpio_request_one(&pdev->dev, machine->gpio_hp_mute,
284 GPIOF_OUT_INIT_HIGH, "hp_mute");
286 dev_err(card->dev, "cannot get hp_mute gpio\n");
291 machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
292 if (machine->gpio_hp_det == -EPROBE_DEFER)
293 return -EPROBE_DEFER;
295 machine->gpio_int_mic_en = of_get_named_gpio(np,
296 "nvidia,int-mic-en-gpios", 0);
297 if (machine->gpio_int_mic_en == -EPROBE_DEFER)
298 return -EPROBE_DEFER;
299 if (gpio_is_valid(machine->gpio_int_mic_en)) {
300 /* Disable int mic; enable signal is active-high */
301 ret = devm_gpio_request_one(&pdev->dev,
302 machine->gpio_int_mic_en,
303 GPIOF_OUT_INIT_LOW, "int_mic_en");
305 dev_err(card->dev, "cannot get int_mic_en gpio\n");
310 machine->gpio_ext_mic_en = of_get_named_gpio(np,
311 "nvidia,ext-mic-en-gpios", 0);
312 if (machine->gpio_ext_mic_en == -EPROBE_DEFER)
313 return -EPROBE_DEFER;
314 if (gpio_is_valid(machine->gpio_ext_mic_en)) {
315 /* Enable ext mic; enable signal is active-low */
316 ret = devm_gpio_request_one(&pdev->dev,
317 machine->gpio_ext_mic_en,
318 GPIOF_OUT_INIT_LOW, "ext_mic_en");
320 dev_err(card->dev, "cannot get ext_mic_en gpio\n");
325 ret = snd_soc_of_parse_card_name(card, "nvidia,model");
329 ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
333 tegra_wm8903_dai.codecs->of_node = of_parse_phandle(np,
334 "nvidia,audio-codec", 0);
335 if (!tegra_wm8903_dai.codecs->of_node) {
337 "Property 'nvidia,audio-codec' missing or invalid\n");
341 tegra_wm8903_dai.cpus->of_node = of_parse_phandle(np,
342 "nvidia,i2s-controller", 0);
343 if (!tegra_wm8903_dai.cpus->of_node) {
345 "Property 'nvidia,i2s-controller' missing or invalid\n");
349 tegra_wm8903_dai.platforms->of_node = tegra_wm8903_dai.cpus->of_node;
351 ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
355 ret = devm_snd_soc_register_card(&pdev->dev, card);
357 dev_err(&pdev->dev, "devm_snd_soc_register_card failed (%d)\n",
365 static const struct of_device_id tegra_wm8903_of_match[] = {
366 { .compatible = "nvidia,tegra-audio-wm8903", },
370 static struct platform_driver tegra_wm8903_driver = {
373 .pm = &snd_soc_pm_ops,
374 .of_match_table = tegra_wm8903_of_match,
376 .probe = tegra_wm8903_driver_probe,
378 module_platform_driver(tegra_wm8903_driver);
380 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
381 MODULE_DESCRIPTION("Tegra+WM8903 machine ASoC driver");
382 MODULE_LICENSE("GPL");
383 MODULE_ALIAS("platform:" DRV_NAME);
384 MODULE_DEVICE_TABLE(of, tegra_wm8903_of_match);