+/*
+ * Enable NAND.
+ */
+static void at91_nand_enable(struct at91_nand_host *host)
+{
+ if (host->board->enable_pin)
+ at91_set_gpio_value(host->board->enable_pin, 0);
+}
+
+/*
+ * Disable NAND.
+ */
+static void at91_nand_disable(struct at91_nand_host *host)
+{
+ if (host->board->enable_pin)
+ at91_set_gpio_value(host->board->enable_pin, 1);
+}
+