return (value < 0) ? value : !!(value & (1 << offset));
}
+static int pcf857x_get_multiple(struct gpio_chip *chip, unsigned long *mask,
+ unsigned long *bits)
+{
+ struct pcf857x *gpio = gpiochip_get_data(chip);
+ int value = gpio->read(gpio->client);
+
+ if (value < 0)
+ return value;
+
+ *bits &= ~*mask;
+ *bits |= value & *mask;
+
+ return 0;
+}
+
static int pcf857x_output(struct gpio_chip *chip, unsigned int offset, int value)
{
struct pcf857x *gpio = gpiochip_get_data(chip);
pcf857x_output(chip, offset, value);
}
+static void pcf857x_set_multiple(struct gpio_chip *chip, unsigned long *mask,
+ unsigned long *bits)
+{
+ struct pcf857x *gpio = gpiochip_get_data(chip);
+
+ mutex_lock(&gpio->lock);
+ gpio->out &= ~*mask;
+ gpio->out |= *bits & *mask;
+ gpio->write(gpio->client, gpio->out);
+ mutex_unlock(&gpio->lock);
+}
+
/*-------------------------------------------------------------------------*/
static irqreturn_t pcf857x_irq(int irq, void *data)
gpio->chip.parent = &client->dev;
gpio->chip.owner = THIS_MODULE;
gpio->chip.get = pcf857x_get;
+ gpio->chip.get_multiple = pcf857x_get_multiple;
gpio->chip.set = pcf857x_set;
+ gpio->chip.set_multiple = pcf857x_set_multiple;
gpio->chip.direction_input = pcf857x_input;
gpio->chip.direction_output = pcf857x_output;
gpio->chip.ngpio = id->driver_data;