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/*
* 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 */
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