1 files changed, 70 insertions, 0 deletions
diff --git a/include/hw/misc/npcm7xx_mft.h b/include/hw/misc/npcm7xx_mft.h
new file mode 100644
index 0000000000..36785e3ba8
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+++ b/include/hw/misc/npcm7xx_mft.h
@@ -0,0 +1,70 @@
+/*
+ * Nuvoton NPCM7xx MFT Module
+ *
+ * Copyright 2021 Google LLC
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+#ifndef NPCM7XX_MFT_H
+#define NPCM7XX_MFT_H
+
+#include "exec/memory.h"
+#include "hw/clock.h"
+#include "hw/irq.h"
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+/* Max Fan input number. */
+#define NPCM7XX_MFT_MAX_FAN_INPUT 19
+
+/*
+ * Number of registers in one MFT module. Don't change this without increasing
+ * the version_id in vmstate.
+ */
+#define NPCM7XX_MFT_NR_REGS (0x20 / sizeof(uint16_t))
+
+/*
+ * The MFT can take up to 4 inputs: A0, B0, A1, B1. It can measure one A and one
+ * B simultaneously. NPCM7XX_MFT_INASEL and NPCM7XX_MFT_INBSEL are used to
+ * select which A or B input are used.
+ */
+#define NPCM7XX_MFT_FANIN_COUNT 4
+
+/**
+ * struct NPCM7xxMFTState - Multi Functional Tachometer device state.
+ * @parent: System bus device.
+ * @iomem: Memory region through which registers are accessed.
+ * @clock_in: The input clock for MFT from CLK module.
+ * @clock_{1,2}: The counter clocks for NPCM7XX_MFT_CNT{1,2}
+ * @irq: The IRQ for this MFT state.
+ * @regs: The MMIO registers.
+ * @max_rpm: The maximum rpm for fans. Order: A0, B0, A1, B1.
+ * @duty: The duty cycles for fans, relative to NPCM7XX_PWM_MAX_DUTY.
+ */
+typedef struct NPCM7xxMFTState {
+    SysBusDevice parent;
+
+    MemoryRegion iomem;
+
+    Clock       *clock_in;
+    Clock       *clock_1, *clock_2;
+    qemu_irq    irq;
+    uint16_t    regs[NPCM7XX_MFT_NR_REGS];
+
+    uint32_t    max_rpm[NPCM7XX_MFT_FANIN_COUNT];
+    uint32_t    duty[NPCM7XX_MFT_FANIN_COUNT];
+} NPCM7xxMFTState;
+
+#define TYPE_NPCM7XX_MFT "npcm7xx-mft"
+#define NPCM7XX_MFT(obj) \
+    OBJECT_CHECK(NPCM7xxMFTState, (obj), TYPE_NPCM7XX_MFT)
+
+#endif /* NPCM7XX_MFT_H */