+static void ucb1x00_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ucb->io_lock, flags);
+ if (value)
+ ucb->io_out |= 1 << offset;
+ else
+ ucb->io_out &= ~(1 << offset);
+
+ ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
+ spin_unlock_irqrestore(&ucb->io_lock, flags);
+}
+
+static int ucb1x00_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+ return ucb1x00_reg_read(ucb, UCB_IO_DATA) & (1 << offset);
+}
+
+static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ucb->io_lock, flags);
+ ucb->io_dir &= ~(1 << offset);
+ ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+ spin_unlock_irqrestore(&ucb->io_lock, flags);
+
+ return 0;
+}
+
+static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset
+ , int value)
+{
+ struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ucb->io_lock, flags);
+ ucb->io_dir |= (1 << offset);
+ ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+
+ if (value)
+ ucb->io_out |= 1 << offset;
+ else
+ ucb->io_out &= ~(1 << offset);
+ ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
+ spin_unlock_irqrestore(&ucb->io_lock, flags);
+
+ return 0;
+}
+