include/hw/misc/zynq-xadc.h

   1 /*
   2  * Device model for Zynq ADC controller
   3  *
   4  * Copyright (c) 2015 Guenter Roeck <linux@roeck-us.net>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  *
  11  * You should have received a copy of the GNU General Public License along
  12  * with this program; if not, see <http://www.gnu.org/licenses/>.
  13  */
  14
  15 #ifndef ZYNQ_XADC_H
  16 #define ZYNQ_XADC_H
  17
  18 #include "hw/sysbus.h"
  19
  20 #define ZYNQ_XADC_MMIO_SIZE     0x0020
  21 #define ZYNQ_XADC_NUM_IO_REGS   (ZYNQ_XADC_MMIO_SIZE / 4)
  22 #define ZYNQ_XADC_NUM_ADC_REGS  128
  23 #define ZYNQ_XADC_FIFO_DEPTH    15
  24
  25 #define TYPE_ZYNQ_XADC          "xlnx,zynq-xadc"
  26 #define ZYNQ_XADC(obj) \
  27     OBJECT_CHECK(ZynqXADCState, (obj), TYPE_ZYNQ_XADC)
  28
  29 typedef struct ZynqXADCState {
  30     /*< private >*/
  31     SysBusDevice parent_obj;
  32
  33     /*< public >*/
  34     MemoryRegion iomem;
  35
  36     uint32_t regs[ZYNQ_XADC_NUM_IO_REGS];
  37     uint16_t xadc_regs[ZYNQ_XADC_NUM_ADC_REGS];
  38     uint16_t xadc_read_reg_previous;
  39     uint16_t xadc_dfifo[ZYNQ_XADC_FIFO_DEPTH];
  40     uint16_t xadc_dfifo_entries;
  41
  42     struct IRQState *qemu_irq;
  43
  44 } ZynqXADCState;
  45
  46 #endif /* ZYNQ_XADC_H */