LXR qemu/include/hw/adc/npcm7xx

   1/*
   2 * Nuvoton NPCM7xx ADC Module
   3 *
   4 * Copyright 2020 Google LLC
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License as published by the
   8 * Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful, but WITHOUT
  12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  14 * for more details.
  15 */
  16#ifndef NPCM7XX_ADC_H
  17#define NPCM7XX_ADC_H
  18
  19#include "hw/clock.h"
  20#include "hw/irq.h"
  21#include "hw/sysbus.h"
  22#include "qemu/timer.h"
  23
  24#define NPCM7XX_ADC_NUM_INPUTS      8
  25/**
  26 * This value should not be changed unless write_adc_calibration function in
  27 * hw/arm/npcm7xx.c is also changed.
  28 */
  29#define NPCM7XX_ADC_NUM_CALIB       2
  30
  31/**
  32 * struct NPCM7xxADCState - Analog to Digital Converter Module device state.
  33 * @parent: System bus device.
  34 * @iomem: Memory region through which registers are accessed.
  35 * @conv_timer: The timer counts down remaining cycles for the conversion.
  36 * @irq: GIC interrupt line to fire on expiration (if enabled).
  37 * @con: The Control Register.
  38 * @data: The Data Buffer.
  39 * @clock: The ADC Clock.
  40 * @adci: The input voltage in units of uV. 1uv = 1e-6V.
  41 * @vref: The external reference voltage.
  42 * @iref: The internal reference voltage, initialized at launch time.
  43 * @rv: The calibrated output values of 0.5V and 1.5V for the ADC.
  44 */
  45typedef struct {
  46    SysBusDevice parent;
  47
  48    MemoryRegion iomem;
  49
  50    QEMUTimer    conv_timer;
  51
  52    qemu_irq     irq;
  53    uint32_t     con;
  54    uint32_t     data;
  55    Clock       *clock;
  56
  57    /* Voltages are in unit of uV. 1V = 1000000uV. */
  58    uint32_t     adci[NPCM7XX_ADC_NUM_INPUTS];
  59    uint32_t     vref;
  60    uint32_t     iref;
  61
  62    uint16_t     calibration_r_values[NPCM7XX_ADC_NUM_CALIB];
  63} NPCM7xxADCState;
  64
  65#define TYPE_NPCM7XX_ADC "npcm7xx-adc"
  66#define NPCM7XX_ADC(obj) \
  67    OBJECT_CHECK(NPCM7xxADCState, (obj), TYPE_NPCM7XX_ADC)
  68
  69#endif /* NPCM7XX_ADC_H */
  70