1 /* 2 * Microsemi SmartFusion2 SPI 3 * 4 * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #ifndef HW_MSS_SPI_H 26 #define HW_MSS_SPI_H 27 28 #include "hw/sysbus.h" 29 #include "hw/ssi/ssi.h" 30 #include "qemu/fifo32.h" 31 #include "qom/object.h" 32 33 #define TYPE_MSS_SPI "mss-spi" 34 typedef struct MSSSpiState MSSSpiState; 35 DECLARE_INSTANCE_CHECKER(MSSSpiState, MSS_SPI, 36 TYPE_MSS_SPI) 37 38 #define R_SPI_MAX 16 39 40 struct MSSSpiState { 41 SysBusDevice parent_obj; 42 43 MemoryRegion mmio; 44 45 qemu_irq irq; 46 47 qemu_irq cs_line; 48 49 SSIBus *spi; 50 51 Fifo32 rx_fifo; 52 Fifo32 tx_fifo; 53 54 int fifo_depth; 55 uint32_t frame_count; 56 bool enabled; 57 58 uint32_t regs[R_SPI_MAX]; 59 }; 60 61 #endif /* HW_MSS_SPI_H */ 62