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 "libqos/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 QI2CDevice QI2CDevice; 26 struct QI2CDevice { 27 /* 28 * For now, all devices are simple enough that there is no need for 29 * them to define their own constructor and get_driver functions. 30 * Therefore, QOSGraphObject is included directly in QI2CDevice; 31 * the tests expect to get a QI2CDevice rather than doing something 32 * like obj->get_driver("i2c-device"). 33 * 34 * In fact there is no i2c-device interface even, because there are 35 * no generic I2C tests). 36 */ 37 QOSGraphObject obj; 38 I2CAdapter *bus; 39 }; 40 41 void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr); 42 43 void i2c_send(I2CAdapter *i2c, uint8_t addr, 44 const uint8_t *buf, uint16_t len); 45 void i2c_recv(I2CAdapter *i2c, uint8_t addr, 46 uint8_t *buf, uint16_t len); 47 48 void i2c_read_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg, 49 uint8_t *buf, uint16_t len); 50 void i2c_write_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg, 51 const uint8_t *buf, uint16_t len); 52 uint8_t i2c_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg); 53 uint16_t i2c_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg); 54 void i2c_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg, 55 uint8_t value); 56 void i2c_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg, 57 uint16_t value); 58 59 /* i2c-omap.c */ 60 typedef struct OMAPI2C { 61 QOSGraphObject obj; 62 I2CAdapter parent; 63 64 uint64_t addr; 65 } OMAPI2C; 66 67 void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr); 68 69 /* i2c-imx.c */ 70 typedef struct IMXI2C { 71 QOSGraphObject obj; 72 I2CAdapter parent; 73 74 uint64_t addr; 75 } IMXI2C; 76 77 void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr); 78 I2CAdapter *imx_i2c_create(QTestState *qts, uint64_t addr); 79 void imx_i2c_free(I2CAdapter *i2c); 80 81 #endif 82