From feb573e395ea6e82088fe15b4c34afb974a15249 Mon Sep 17 00:00:00 2001
From: Hui Liu <hui.liu@mediatek.corp-partner.google.com>
Date: Mon, 25 Jul 2022 14:51:36 +0800
Subject: [PATCH] soc/mediatek/mt8188: Add AUXADC support

TEST=get voltage as 340mV for channel 0 in MTK EVB.
BUG=b:233720142

Signed-off-by: Hui Liu <hui.liu@mediatek.corp-partner.google.com>
Change-Id: Idd1edcce6cb62fcf6991bb9342c409150989c5ca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66121
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
---
 src/soc/mediatek/mt8188/Makefile.inc         |  1 +
 src/soc/mediatek/mt8188/include/soc/auxadc.h | 17 +++++++++++++++++
 src/soc/mediatek/mt8188/include/soc/efuse.h  | 17 +++++++++++++++++
 3 files changed, 35 insertions(+)
 create mode 100644 src/soc/mediatek/mt8188/include/soc/auxadc.h
 create mode 100644 src/soc/mediatek/mt8188/include/soc/efuse.h

diff --git a/src/soc/mediatek/mt8188/Makefile.inc b/src/soc/mediatek/mt8188/Makefile.inc
index 0d3dfb07d2..8db9c789a4 100644
--- a/src/soc/mediatek/mt8188/Makefile.inc
+++ b/src/soc/mediatek/mt8188/Makefile.inc
@@ -21,6 +21,7 @@ romstage-y += ../common/pmif.c ../common/pmif_clk.c pmif_clk.c
 romstage-y += ../common/pmif_spi.c pmif_spi.c
 romstage-y += ../common/pmif_spmi.c pmif_spmi.c
 
+ramstage-y += ../common/auxadc.c
 ramstage-y += emi.c
 ramstage-y += ../common/mcu.c
 ramstage-y += ../common/mcupm.c
diff --git a/src/soc/mediatek/mt8188/include/soc/auxadc.h b/src/soc/mediatek/mt8188/include/soc/auxadc.h
new file mode 100644
index 0000000000..b8f0234b95
--- /dev/null
+++ b/src/soc/mediatek/mt8188/include/soc/auxadc.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/*
+ * This file is created based on MT8188 Functional Specification
+ * Chapter number: 5.10
+ */
+
+#ifndef SOC_MEDIATEK_MT8188_AUXADC_H
+#define SOC_MEDIATEK_MT8188_AUXADC_H
+
+#include <soc/auxadc_common.h>
+#include <soc/infracfg.h>
+#include <stdint.h>
+
+static struct mt8188_infracfg_ao_regs *const mtk_infracfg = mt8188_infracfg_ao;
+
+#endif
diff --git a/src/soc/mediatek/mt8188/include/soc/efuse.h b/src/soc/mediatek/mt8188/include/soc/efuse.h
new file mode 100644
index 0000000000..3b693f7fe2
--- /dev/null
+++ b/src/soc/mediatek/mt8188/include/soc/efuse.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOC_MEDIATEK_MT8188_EFUSE_H
+#define SOC_MEDIATEK_MT8188_EFUSE_H
+
+#include <soc/addressmap.h>
+#include <types.h>
+
+struct efuse_regs {
+	uint32_t reserved[107];
+	uint32_t adc_cali_reg;
+};
+
+check_member(efuse_regs, adc_cali_reg, 0x1AC);
+static struct efuse_regs *const mtk_efuse = (void *)EFUSE_BASE;
+
+#endif