First commit XiUOS

2021-04-28 17:49:18 +08:00
commit 6001051eb7
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+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+* @file bus_i2c.h
+* @brief define i2c bus and drv function using bus driver framework
+* @version 1.0 
+* @author AIIT XUOS Lab
+* @date 2021-04-24
+*/
+
+#ifndef BUS_I2C_H
+#define BUS_I2C_H
+
+#include <bus.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct I2cHalDrvDone
+{
+    void *data;
+    void (*SetSdaState) (void *data, uint8 sda_state);
+    void (*SetSclState) (void *data, uint8 scl_state);
+    uint8 (*GetSdaState) (void *data);
+    uint8 (*GetSclState) (void *data);
+#ifdef ARCH_RISCV
+    int (*udelay)(uint64 us);
+#endif
+#ifdef ARCH_ARM
+    int (*udelay)(uint32 us);
+#endif
+
+    uint32 delay_us;
+    uint32 timeout;
+};
+
+typedef struct
+{
+    uint8 i2c_sda_pin;
+    uint8 i2c_scl_pin;
+}I2cBusParam;
+
+struct I2cDriver
+{
+    struct Driver driver;
+
+    void *private_data;
+};
+
+struct I2cBus
+{
+    struct Bus bus;
+
+    void *private_data;
+};
+
+/*Register the I2C bus*/
+int I2cBusInit(struct I2cBus *i2c_bus, const char *bus_name);
+
+/*Register the I2C driver*/
+int I2cDriverInit(struct I2cDriver *i2c_driver, const char *driver_name);
+
+/*Release the I2C device*/
+int I2cReleaseBus(struct I2cBus *i2c_bus);
+
+/*Register the I2C driver to the I2C bus*/
+int I2cDriverAttachToBus(const char *drv_name, const char *bus_name);
+
+/*Register the driver, manage with the double linklist*/
+int I2cDriverRegister(struct Driver *driver);
+
+/*Find the register driver*/
+DriverType I2cDriverFind(const char *drv_name, enum DriverType drv_type);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif