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