include/hw/i2c/aspeed_i2c.h

   1 /*
   2  *  ASPEED AST2400 I2C Controller
   3  *
   4  *  Copyright (C) 2016 IBM Corp.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the 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,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #ifndef ASPEED_I2C_H
  22 #define ASPEED_I2C_H
  23
  24 #include "hw/i2c/i2c.h"
  25 #include "hw/sysbus.h"
  26
  27 #define TYPE_ASPEED_I2C "aspeed.i2c"
  28 #define TYPE_ASPEED_2400_I2C TYPE_ASPEED_I2C "-ast2400"
  29 #define TYPE_ASPEED_2500_I2C TYPE_ASPEED_I2C "-ast2500"
  30 #define TYPE_ASPEED_2600_I2C TYPE_ASPEED_I2C "-ast2600"
  31 #define ASPEED_I2C(obj) \
  32     OBJECT_CHECK(AspeedI2CState, (obj), TYPE_ASPEED_I2C)
  33
  34 #define ASPEED_I2C_NR_BUSSES 16
  35
  36 struct AspeedI2CState;
  37
  38 typedef struct AspeedI2CBus {
  39     struct AspeedI2CState *controller;
  40
  41     MemoryRegion mr;
  42
  43     I2CBus *bus;
  44     uint8_t id;
  45     qemu_irq irq;
  46
  47     uint32_t ctrl;
  48     uint32_t timing[2];
  49     uint32_t intr_ctrl;
  50     uint32_t intr_status;
  51     uint32_t cmd;
  52     uint32_t buf;
  53 } AspeedI2CBus;
  54
  55 typedef struct AspeedI2CState {
  56     SysBusDevice parent_obj;
  57
  58     MemoryRegion iomem;
  59     qemu_irq irq;
  60
  61     uint32_t intr_status;
  62
  63     AspeedI2CBus busses[ASPEED_I2C_NR_BUSSES];
  64 } AspeedI2CState;
  65
  66 #define ASPEED_I2C_CLASS(klass) \
  67      OBJECT_CLASS_CHECK(AspeedI2CClass, (klass), TYPE_ASPEED_I2C)
  68 #define ASPEED_I2C_GET_CLASS(obj) \
  69      OBJECT_GET_CLASS(AspeedI2CClass, (obj), TYPE_ASPEED_I2C)
  70
  71 typedef struct AspeedI2CClass {
  72     SysBusDeviceClass parent_class;
  73
  74     uint8_t num_busses;
  75     uint8_t reg_size;
  76     uint8_t gap;
  77     qemu_irq (*bus_get_irq)(AspeedI2CBus *);
  78 } AspeedI2CClass;
  79
  80 I2CBus *aspeed_i2c_get_bus(DeviceState *dev, int busnr);
  81
  82 #endif /* ASPEED_I2C_H */