1 files changed, 53 insertions, 0 deletions
diff --git a/plat/mediatek/mt8192/drivers/gpio/mtgpio.c b/plat/mediatek/mt8192/drivers/gpio/mtgpio.c
new file mode 100644
index 0000000..c78332d
--- /dev/null
+++ b/plat/mediatek/mt8192/drivers/gpio/mtgpio.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2020, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <mtgpio.h>
+#include <platform_def.h>
+
+uintptr_t mt_gpio_find_reg_addr(uint32_t pin)
+{
+	uintptr_t reg_addr = 0U;
+	struct mt_pin_info gpio_info;
+
+	assert(pin < MAX_GPIO_PIN);
+
+	gpio_info = mt_pin_infos[pin];
+
+	switch (gpio_info.base & 0x0f) {
+	case 0:
+		reg_addr = IOCFG_RM_BASE;
+		break;
+	case 1:
+		reg_addr = IOCFG_BM_BASE;
+		break;
+	case 2:
+		reg_addr = IOCFG_BL_BASE;
+		break;
+	case 3:
+		reg_addr = IOCFG_BR_BASE;
+		break;
+	case 4:
+		reg_addr = IOCFG_LM_BASE;
+		break;
+	case 5:
+		reg_addr = IOCFG_LB_BASE;
+		break;
+	case 6:
+		reg_addr = IOCFG_RT_BASE;
+		break;
+	case 7:
+		reg_addr = IOCFG_LT_BASE;
+		break;
+	case 8:
+		reg_addr = IOCFG_TL_BASE;
+		break;
+	default:
+		break;
+	}
+
+	return reg_addr;
+}