1 /* 2 * I2C libqos 3 * 4 * Copyright (c) 2012 Andreas Färber 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 #ifndef LIBQOS_I2C_H 10 #define LIBQOS_I2C_H 11 12 #include "libqtest.h" 13 #include "qgraph.h" 14 15 typedef struct I2CAdapter I2CAdapter; 16 struct I2CAdapter { 17 void (*send)(I2CAdapter *adapter, uint8_t addr, 18 const uint8_t *buf, uint16_t len); 19 void (*recv)(I2CAdapter *adapter, uint8_t addr, 20 uint8_t *buf, uint16_t len); 21 22 QTestState *qts; 23 }; 24 25 typedef struct QI2CAddress QI2CAddress; 26 struct QI2CAddress { 27 uint8_t addr; 28 }; 29 30 typedef struct QI2CDevice QI2CDevice; 31 struct QI2CDevice { 32 /* 33 * For now, all devices are simple enough that there is no need for 34 * them to define their own constructor and get_driver functions. 35 * Therefore, QOSGraphObject is included directly in QI2CDevice; 36 * the tests expect to get a QI2CDevice rather than doing something 37 * like obj->get_driver("i2c-device"). 38 * 39 * In fact there is no i2c-device interface even, because there are 40 * no generic I2C tests). 41 */ 42 QOSGraphObject obj; 43 I2CAdapter *bus; 44 uint8_t addr; 45 }; 46 47 void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr); 48 void add_qi2c_address(QOSGraphEdgeOptions *opts, QI2CAddress *addr); 49 50 void qi2c_send(QI2CDevice *dev, const uint8_t *buf, uint16_t len); 51 void qi2c_recv(QI2CDevice *dev, uint8_t *buf, uint16_t len); 52 53 void i2c_read_block(QI2CDevice *dev, uint8_t reg, 54 uint8_t *buf, uint16_t len); 55 void i2c_write_block(QI2CDevice *dev, uint8_t reg, 56 const uint8_t *buf, uint16_t len); 57 uint8_t i2c_get8(QI2CDevice *dev, uint8_t reg); 58 uint16_t i2c_get16(QI2CDevice *dev, uint8_t reg); 59 void i2c_set8(QI2CDevice *dev, uint8_t reg, uint8_t value); 60 void i2c_set16(QI2CDevice *dev, uint8_t reg, uint16_t value); 61 62 /* i2c-omap.c */ 63 typedef struct OMAPI2C { 64 QOSGraphObject obj; 65 I2CAdapter parent; 66 67 uint64_t addr; 68 } OMAPI2C; 69 70 void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr); 71 72 /* i2c-imx.c */ 73 typedef struct IMXI2C { 74 QOSGraphObject obj; 75 I2CAdapter parent; 76 77 uint64_t addr; 78 } IMXI2C; 79 80 void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr); 81 82 #endif 83