soc/mediatek/mt8186: Add AUXADC driver support

Add AUXADC controller driver code.

TEST=build pass
BUG=b:202871018

Signed-off-by: Guodong Liu <guodong.liu@mediatek.corp-partner.google.com>
Change-Id: I9fb7fd4903d67a2804c31ff404bc0486983c742f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59253
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>

src/soc/mediatek/mt8186/Makefile.inc

@@ -1,5 +1,6 @@
 ifeq ($(CONFIG_SOC_MEDIATEK_MT8186),y)
 
+bootblock-y += ../common/auxadc.c
 bootblock-y += bootblock.c
 bootblock-y += ../common/eint_event.c
 bootblock-y += ../common/flash_controller.c
@@ -12,6 +13,7 @@ bootblock-y += ../common/timer.c timer.c
 bootblock-y += ../common/uart.c
 bootblock-y += ../common/wdt.c wdt.c
 
+verstage-y += ../common/auxadc.c
 verstage-y += ../common/flash_controller.c
 verstage-y += ../common/gpio.c gpio.c
 verstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
@@ -19,6 +21,7 @@ verstage-y += ../common/timer.c timer.c
 verstage-y += ../common/uart.c
 verstage-y += ../common/wdt.c wdt.c
 
+romstage-y += ../common/auxadc.c
 romstage-y += ../common/cbmem.c
 romstage-y += emi.c
 romstage-y += ../common/flash_controller.c
@@ -30,6 +33,7 @@ romstage-y += ../common/uart.c
 romstage-y += ../common/wdt.c wdt.c
 romstage-y += ../common/pmic_wrap.c pmic_wrap.c mt6366.c
 
+ramstage-y += ../common/auxadc.c
 ramstage-y += emi.c
 ramstage-y += ../common/flash_controller.c
 ramstage-y += ../common/gpio.c gpio.c

src/soc/mediatek/mt8186/include/soc/auxadc.h

@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/*
+ * This file is created based on MT8186 Functional Specification
+ * Chapter number: 5.9
+ */
+
+#ifndef SOC_MEDIATEK_MT8186_AUXADC_H
+#define SOC_MEDIATEK_MT8186_AUXADC_H
+
+#include <soc/auxadc_common.h>
+#include <soc/infracfg.h>
+#include <stdint.h>
+
+typedef struct mtk_auxadc_regs {
+	uint32_t con0;
+	uint32_t con1;
+	uint32_t con1_set;
+	uint32_t con1_clr;
+	uint32_t con2;
+	uint32_t data[16];
+	uint32_t reserved[16];
+	uint32_t misc;
+} mtk_auxadc_regs;
+
+static struct mt8186_infracfg_ao_regs *const mtk_infracfg = mt8186_infracfg_ao;
+
+#endif

src/soc/mediatek/mt8186/include/soc/efuse.h

@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOC_MEDIATEK_MT8186_EFUSE_H
+#define SOC_MEDIATEK_MT8186_EFUSE_H
+
+#include <soc/addressmap.h>
+#include <types.h>
+
+struct efuse_regs {
+	uint32_t reserved[130];
+	uint32_t adc_cali_reg;
+};
+
+check_member(efuse_regs, adc_cali_reg, 0x208);
+static struct efuse_regs *const mtk_efuse = (void *)EFUSEC_BASE;
+
+#endif