sound/soc/soc-ac97.c

3 // soc-ac97.c  --  ALSA SoC Audio Layer AC97 support
125 static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97,
134 	ac97->gpio_priv = gpio_priv;
147 static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97)
149 	gpiochip_remove(&ac97->gpio_priv->gpio_chip);
152 static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97,
158 static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97)
168  * it. The caller is responsible to either call device_add(&ac97->dev) to
169  * register the device, or to call put_device(&ac97->dev) to free the device.
175 	struct snd_ac97 *ac97;
177 	ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
178 	if (ac97 == NULL)
181 	ac97->bus = &soc_ac97_bus;
182 	ac97->num = 0;
184 	ac97->dev.bus = &ac97_bus_type;
185 	ac97->dev.parent = component->card->dev;
186 	ac97->dev.release = soc_ac97_device_release;
188 	dev_set_name(&ac97->dev, "%d-%d:%s",
192 	device_initialize(&ac97->dev);
194 	return ac97;
215 	struct snd_ac97 *ac97;
218 	ac97 = snd_soc_alloc_ac97_component(component);
219 	if (IS_ERR(ac97))
220 		return ac97;
223 		ret = snd_ac97_reset(ac97, false, id, id_mask);
231 	ret = device_add(&ac97->dev);
235 	ret = snd_soc_ac97_init_gpio(ac97, component);
239 	return ac97;
242 	put_device(&ac97->dev);
249  * @ac97: snd_ac97 device to be freed
253 void snd_soc_free_ac97_component(struct snd_ac97 *ac97)
255 	snd_soc_ac97_free_gpio(ac97);
256 	device_del(&ac97->dev);
257 	ac97->bus = NULL;
258 	put_device(&ac97->dev);
264 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)
280 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)
311 	state = pinctrl_lookup_state(p, "ac97-reset");
313 		dev_err(dev, "Can't find pinctrl state ac97-reset\n");
318 	state = pinctrl_lookup_state(p, "ac97-warm-reset");
320 		dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");
325 	state = pinctrl_lookup_state(p, "ac97-running");
327 		dev_err(dev, "Can't find pinctrl state ac97-running\n");
332 	cfg->sync_gpio = devm_gpiod_get_index(dev, "ac97", 0, GPIOD_ASIS);
334 		return dev_err_probe(dev, PTR_ERR(cfg->sync_gpio), "Can't find ac97-sync gpio\n");
337 	cfg->sdata_gpio = devm_gpiod_get_index(dev, "ac97", 1, GPIOD_ASIS);
339 		return dev_err_probe(dev, PTR_ERR(cfg->sdata_gpio), "Can't find ac97-sdata gpio\n");
342 	cfg->reset_gpio = devm_gpiod_get_index(dev, "ac97", 2, GPIOD_ASIS);
344 		return dev_err_probe(dev, PTR_ERR(cfg->reset_gpio), "Can't find ac97-reset gpio\n");
369  * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions