drivers/gpio/gpio-pcf857x.c

8 #include <linux/gpio/driver.h>
120 	struct pcf857x *gpio = gpiochip_get_data(chip);
123 	mutex_lock(&gpio->lock);
124 	gpio->out |= (1 << offset);
125 	status = gpio->write(gpio->client, gpio->out);
126 	mutex_unlock(&gpio->lock);
133 	struct pcf857x *gpio = gpiochip_get_data(chip);
136 	value = gpio->read(gpio->client);
143 	struct pcf857x *gpio = gpiochip_get_data(chip);
144 	int value = gpio->read(gpio->client);
157 	struct pcf857x *gpio = gpiochip_get_data(chip);
161 	mutex_lock(&gpio->lock);
163 		gpio->out |= bit;
165 		gpio->out &= ~bit;
166 	status = gpio->write(gpio->client, gpio->out);
167 	mutex_unlock(&gpio->lock);
180 	struct pcf857x *gpio = gpiochip_get_data(chip);
182 	mutex_lock(&gpio->lock);
183 	gpio->out &= ~*mask;
184 	gpio->out |= *bits & *mask;
185 	gpio->write(gpio->client, gpio->out);
186 	mutex_unlock(&gpio->lock);
193 	struct pcf857x *gpio = data;
196 	status = gpio->read(gpio->client);
199 	 * call the interrupt handler iff gpio is used as
202 	mutex_lock(&gpio->lock);
203 	change = (gpio->status ^ status) & gpio->irq_enabled;
204 	gpio->status = status;
205 	mutex_unlock(&gpio->lock);
207 	for_each_set_bit(i, &change, gpio->chip.ngpio)
208 		handle_nested_irq(irq_find_mapping(gpio->chip.irq.domain, i));
220 	struct pcf857x *gpio = irq_data_get_irq_chip_data(data);
222 	return irq_set_irq_wake(gpio->client->irq, on);
227 	struct pcf857x *gpio = irq_data_get_irq_chip_data(data);
230 	gpiochip_enable_irq(&gpio->chip, hwirq);
231 	gpio->irq_enabled |= (1 << hwirq);
236 	struct pcf857x *gpio = irq_data_get_irq_chip_data(data);
239 	gpio->irq_enabled &= ~(1 << hwirq);
240 	gpiochip_disable_irq(&gpio->chip, hwirq);
245 	struct pcf857x *gpio = irq_data_get_irq_chip_data(data);
247 	mutex_lock(&gpio->lock);
252 	struct pcf857x *gpio = irq_data_get_irq_chip_data(data);
254 	mutex_unlock(&gpio->lock);
275 	struct pcf857x *gpio;
282 	gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL);
283 	if (!gpio)
286 	mutex_init(&gpio->lock);
288 	gpio->chip.base			= -1;
289 	gpio->chip.can_sleep		= true;
290 	gpio->chip.parent		= &client->dev;
291 	gpio->chip.owner		= THIS_MODULE;
292 	gpio->chip.get			= pcf857x_get;
293 	gpio->chip.get_multiple		= pcf857x_get_multiple;
294 	gpio->chip.set			= pcf857x_set;
295 	gpio->chip.set_multiple		= pcf857x_set_multiple;
296 	gpio->chip.direction_input	= pcf857x_input;
297 	gpio->chip.direction_output	= pcf857x_output;
298 	gpio->chip.ngpio		= (uintptr_t)i2c_get_match_data(client);
311 	if (gpio->chip.ngpio == 8) {
312 		gpio->write	= i2c_write_le8;
313 		gpio->read	= i2c_read_le8;
329 	} else if (gpio->chip.ngpio == 16) {
330 		gpio->write	= i2c_write_le16;
331 		gpio->read	= i2c_read_le16;
348 	gpio->chip.label = client->name;
350 	gpio->client = client;
351 	i2c_set_clientdata(client, gpio);
368 	gpio->out = ~n_latch;
369 	gpio->status = gpio->read(gpio->client);
378 					dev_name(&client->dev), gpio);
382 		girq = &gpio->chip.irq;
393 	status = devm_gpiochip_add_data(&client->dev, &gpio->chip, gpio);
410 	struct pcf857x *gpio = i2c_get_clientdata(client);
413 	gpio->write(gpio->client, BIT(gpio->chip.ngpio) - 1);