1 files changed, 34 insertions, 0 deletions
diff --git a/include/sbi_utils/gpio/fdt_gpio.h b/include/sbi_utils/gpio/fdt_gpio.h
new file mode 100644
index 0000000..19e1b58
--- /dev/null
+++ b/include/sbi_utils/gpio/fdt_gpio.h
@@ -0,0 +1,34 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2021 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ */
+
+#ifndef __FDT_GPIO_H__
+#define __FDT_GPIO_H__
+
+#include <sbi_utils/gpio/gpio.h>
+
+/** FDT based GPIO driver */
+struct fdt_gpio {
+	const struct fdt_match *match_table;
+	int (*xlate)(struct gpio_chip *chip,
+		     const struct fdt_phandle_args *pargs,
+		     struct gpio_pin *out_pin);
+	int (*init)(void *fdt, int nodeoff, u32 phandle,
+		    const struct fdt_match *match);
+};
+
+/** Get a GPIO pin using "gpios" DT property of client DT node */
+int fdt_gpio_pin_get(void *fdt, int nodeoff, int index,
+		     struct gpio_pin *out_pin);
+
+/** Simple xlate function to convert two GPIO FDT cells into GPIO pin */
+int fdt_gpio_simple_xlate(struct gpio_chip *chip,
+			  const struct fdt_phandle_args *pargs,
+			  struct gpio_pin *out_pin);
+
+#endif