3 // soc-ac97.c  --  ALSA SoC Audio Layer AC97 support
126 static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97,  in snd_soc_ac97_init_gpio()  argument
135 	ac97->gpio_priv = gpio_priv;  in snd_soc_ac97_init_gpio()
148 static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97)  in snd_soc_ac97_free_gpio()  argument
150 	gpiochip_remove(&ac97->gpio_priv->gpio_chip);  in snd_soc_ac97_free_gpio()
153 static int snd_soc_ac97_init_gpio(struct snd_ac97 *ac97,  in snd_soc_ac97_init_gpio()  argument
159 static void snd_soc_ac97_free_gpio(struct snd_ac97 *ac97)  in snd_soc_ac97_free_gpio()  argument
169  * it. The caller is responsible to either call device_add(&ac97->dev) to
170  * register the device, or to call put_device(&ac97->dev) to free the device.
176 	struct snd_ac97 *ac97;  in snd_soc_alloc_ac97_component()  local
178 	ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);  in snd_soc_alloc_ac97_component()
179 	if (ac97 == NULL)  in snd_soc_alloc_ac97_component()
182 	ac97->bus = &soc_ac97_bus;  in snd_soc_alloc_ac97_component()
183 	ac97->num = 0;  in snd_soc_alloc_ac97_component()
185 	ac97->dev.bus = &ac97_bus_type;  in snd_soc_alloc_ac97_component()
186 	ac97->dev.parent = component->card->dev;  in snd_soc_alloc_ac97_component()
187 	ac97->dev.release = soc_ac97_device_release;  in snd_soc_alloc_ac97_component()
189 	dev_set_name(&ac97->dev, "%d-%d:%s",  in snd_soc_alloc_ac97_component()
193 	device_initialize(&ac97->dev);  in snd_soc_alloc_ac97_component()
195 	return ac97;  in snd_soc_alloc_ac97_component()
200  * snd_soc_new_ac97_component - initailise AC97 device
205  * Initialises AC97 component resources for use by ad-hoc devices only.
216 	struct snd_ac97 *ac97;  in snd_soc_new_ac97_component()  local
219 	ac97 = snd_soc_alloc_ac97_component(component);  in snd_soc_new_ac97_component()
220 	if (IS_ERR(ac97))  in snd_soc_new_ac97_component()
221 		return ac97;  in snd_soc_new_ac97_component()
224 		ret = snd_ac97_reset(ac97, false, id, id_mask);  in snd_soc_new_ac97_component()
226 			dev_err(component->dev, "Failed to reset AC97 device: %d\n",  in snd_soc_new_ac97_component()
232 	ret = device_add(&ac97->dev);  in snd_soc_new_ac97_component()
236 	ret = snd_soc_ac97_init_gpio(ac97, component);  in snd_soc_new_ac97_component()
240 	return ac97;  in snd_soc_new_ac97_component()
243 	put_device(&ac97->dev);  in snd_soc_new_ac97_component()
249  * snd_soc_free_ac97_component - free AC97 component device
250  * @ac97: snd_ac97 device to be freed
252  * Frees AC97 component device resources.
254 void snd_soc_free_ac97_component(struct snd_ac97 *ac97)  in snd_soc_free_ac97_component()  argument
256 	snd_soc_ac97_free_gpio(ac97);  in snd_soc_free_ac97_component()
257 	device_del(&ac97->dev);  in snd_soc_free_ac97_component()
258 	ac97->bus = NULL;  in snd_soc_free_ac97_component()
259 	put_device(&ac97->dev);  in snd_soc_free_ac97_component()
265 static void snd_soc_ac97_warm_reset(struct snd_ac97 *ac97)  in snd_soc_ac97_warm_reset()  argument
281 static void snd_soc_ac97_reset(struct snd_ac97 *ac97)  in snd_soc_ac97_reset()  argument
314 	state = pinctrl_lookup_state(p, "ac97-reset");  in snd_soc_ac97_parse_pinctl()
316 		dev_err(dev, "Can't find pinctrl state ac97-reset\n");  in snd_soc_ac97_parse_pinctl()
321 	state = pinctrl_lookup_state(p, "ac97-warm-reset");  in snd_soc_ac97_parse_pinctl()
323 		dev_err(dev, "Can't find pinctrl state ac97-warm-reset\n");  in snd_soc_ac97_parse_pinctl()
328 	state = pinctrl_lookup_state(p, "ac97-running");  in snd_soc_ac97_parse_pinctl()
330 		dev_err(dev, "Can't find pinctrl state ac97-running\n");  in snd_soc_ac97_parse_pinctl()
335 	gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 0);  in snd_soc_ac97_parse_pinctl()
337 		dev_err(dev, "Can't find ac97-sync gpio\n");  in snd_soc_ac97_parse_pinctl()
340 	ret = devm_gpio_request(dev, gpio, "AC97 link sync");  in snd_soc_ac97_parse_pinctl()
342 		dev_err(dev, "Failed requesting ac97-sync gpio\n");  in snd_soc_ac97_parse_pinctl()
347 	gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 1);  in snd_soc_ac97_parse_pinctl()
349 		dev_err(dev, "Can't find ac97-sdata gpio %d\n", gpio);  in snd_soc_ac97_parse_pinctl()
352 	ret = devm_gpio_request(dev, gpio, "AC97 link sdata");  in snd_soc_ac97_parse_pinctl()
354 		dev_err(dev, "Failed requesting ac97-sdata gpio\n");  in snd_soc_ac97_parse_pinctl()
359 	gpio = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);  in snd_soc_ac97_parse_pinctl()
361 		dev_err(dev, "Can't find ac97-reset gpio\n");  in snd_soc_ac97_parse_pinctl()
364 	ret = devm_gpio_request(dev, gpio, "AC97 link reset");  in snd_soc_ac97_parse_pinctl()
366 		dev_err(dev, "Failed requesting ac97-reset gpio\n");  in snd_soc_ac97_parse_pinctl()
393  * snd_soc_set_ac97_ops_of_reset - Set ac97 ops with generic ac97 reset functions