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 */ 83