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rt-thread/bsp/phytium/libraries/drivers/drv_i2c.c

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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Email: opensource_embedded@phytium.com.cn
*
* Change Logs:
* Date Author Notes
* 2023-10-23 zhangyan first version
*
*/
#include "rtconfig.h"
#if defined BSP_USING_I2C
#define LOG_TAG "i2c_drv"
#include "drv_log.h"
#include "drv_i2c.h"
#include "fi2c.h"
#include "fi2c_hw.h"
#include "fio_mux.h"
#include "fmio_hw.h"
#include "fmio.h"
#include "drivers/i2c.h"
#include "fparameters.h"
#ifdef RT_USING_SMART
#include <ioremap.h>
#endif
#define FI2C_DEFAULT_ID 0
#define I2C_USE_MIO
#if defined(I2C_USE_MIO)
static FMioCtrl mio_handle;
#endif
struct phytium_i2c_bus
{
struct rt_i2c_bus_device device;
FI2c i2c_handle;
struct rt_i2c_msg *msg;
const char *name;
};
#if defined(I2C_USE_CONTROLLER)
static struct phytium_i2c_bus i2c_bus[FI2C_NUM] =
{
{
.name = "I2C0",
.i2c_handle.config.instance_id = 0,
},
{
.name = "I2C1",
.i2c_handle.config.instance_id = 1,
},
{
.name = "I2C2",
.i2c_handle.config.instance_id = 2,
},
};
#endif
#if defined(I2C_USE_MIO)
static struct phytium_i2c_bus i2c_mio_bus[FMIO_NUM] =
{
#if defined(TARGET_E2000D) ||defined(TARGET_E2000Q)
{
.name = "MIO0",
.i2c_handle.config.instance_id = 0,
},
{
.name = "MIO1",
.i2c_handle.config.instance_id = 1,
},
{
.name = "MIO2",
.i2c_handle.config.instance_id = 2,
},
{
.name = "MIO3",
.i2c_handle.config.instance_id = 3,
},
{
.name = "MIO4",
.i2c_handle.config.instance_id = 4,
},
{
.name = "MIO5",
.i2c_handle.config.instance_id = 5,
},
{
.name = "MIO6",
.i2c_handle.config.instance_id = 6,
},
{
.name = "MIO7",
.i2c_handle.config.instance_id = 7,
},
{
.name = "MIO8",
.i2c_handle.config.instance_id = 8,
},
{
.name = "MIO9",
.i2c_handle.config.instance_id = 9,
},
{
.name = "MIO10",
.i2c_handle.config.instance_id = 10,
},
{
.name = "MIO11",
.i2c_handle.config.instance_id = 11,
},
{
.name = "MIO12",
.i2c_handle.config.instance_id = 12,
},
{
.name = "MIO13",
.i2c_handle.config.instance_id = 13,
},
{
.name = "MIO14",
.i2c_handle.config.instance_id = 14,
},
{
.name = "MIO15",
.i2c_handle.config.instance_id = 15,
},
#elif defined(TARGET_PHYTIUMPI)
{
.name = "MIO0",
.i2c_handle.config.instance_id = 0,
},
{
.name = "MIO1",
.i2c_handle.config.instance_id = 1,
},
{
.name = "MIO2",
.i2c_handle.config.instance_id = 2,
},
{
.name = "MIO10",
.i2c_handle.config.instance_id = 10,
},
#endif
};
#endif
#if defined(I2C_USE_CONTROLLER)
static rt_err_t i2c_config(struct phytium_i2c_bus *i2c_bus)
{
RT_ASSERT(i2c_bus);
FI2cConfig input_cfg;
const FI2cConfig *config_p = NULL;
FI2c *instance_p = &i2c_bus->i2c_handle;
FError ret = FI2C_SUCCESS;
/* Lookup default configs by instance id */
config_p = FI2cLookupConfig(instance_p->config.instance_id);
input_cfg = *config_p;
#ifdef RT_USING_SMART
input_cfg.base_addr = (uintptr)rt_ioremap((void *)input_cfg.base_addr, 0x1000);
#endif
input_cfg.speed_rate = FI2C_SPEED_STANDARD_RATE;
input_cfg.work_mode = FI2C_MASTER;
FI2cDeInitialize(&i2c_bus->i2c_handle);
/* Initialization */
ret = FI2cCfgInitialize(instance_p, &input_cfg);
if (ret != FI2C_SUCCESS)
{
LOG_E("Init master I2c failed, ret: 0x%x", ret);
return RT_ERROR;
}
return RT_EOK;
}
#endif
#if defined(I2C_USE_MIO)
static rt_err_t i2c_mio_config(struct phytium_i2c_bus *i2c_bus)
{
RT_ASSERT(i2c_bus);
FI2cConfig input_cfg;
const FI2cConfig *config_p = NULL;
FI2c *instance_p = &i2c_bus->i2c_handle;
FError ret = FI2C_SUCCESS;
mio_handle.config = *FMioLookupConfig(instance_p->config.instance_id);
#ifdef RT_USING_SMART
mio_handle.config.func_base_addr = (uintptr)rt_ioremap((void *)mio_handle.config.func_base_addr, 0x1200);
mio_handle.config.mio_base_addr = (uintptr)rt_ioremap((void *)mio_handle.config.mio_base_addr, 0x200);
#endif
ret = FMioFuncInit(&mio_handle, FMIO_FUNC_SET_I2C);
if (ret != FT_SUCCESS)
{
LOG_E("MIO initialize error.");
return RT_ERROR;
}
FIOPadSetMioMux(instance_p->config.instance_id);
config_p = FI2cLookupConfig(FI2C_DEFAULT_ID);
if (NULL == config_p)
{
LOG_E("Config of mio instance %d non found.", instance_p->config.instance_id);
return RT_ERROR;
}
input_cfg = *config_p;
input_cfg.instance_id = instance_p->config.instance_id;
input_cfg.base_addr = FMioFuncGetAddress(&mio_handle, FMIO_FUNC_SET_I2C);
input_cfg.irq_num = FMioFuncGetIrqNum(&mio_handle, FMIO_FUNC_SET_I2C);
input_cfg.ref_clk_hz = FMIO_CLK_FREQ_HZ;
input_cfg.speed_rate = FI2C_SPEED_STANDARD_RATE;
ret = FI2cCfgInitialize(&i2c_bus->i2c_handle, &input_cfg);
if (FI2C_SUCCESS != ret)
{
LOG_E("Init mio master failed, ret: 0x%x", ret);
return RT_ERROR;
}
return RT_EOK;
}
#endif
static rt_err_t phytium_i2c_set_speed(struct phytium_i2c_bus *i2c_bus, rt_uint32_t speed)
{
RT_ASSERT(i2c_bus);
u32 ret;
uintptr base_addr = i2c_bus->i2c_handle.config.base_addr;
ret = FI2cSetSpeed(base_addr, speed);
if (ret != FI2C_SUCCESS)
{
LOG_E("Set i2c speed failed!\n");
return RT_ERROR;
}
return RT_EOK;
}
static rt_err_t i2c_bus_control(struct rt_i2c_bus_device *device, int cmd, void *args)
{
RT_ASSERT(device);
struct phytium_i2c_bus *i2c_bus;
i2c_bus = (struct phytium_i2c_bus *)(device);
switch (cmd)
{
case RT_I2C_DEV_CTRL_CLK:
phytium_i2c_set_speed(i2c_bus, *(rt_uint32_t *)args);
break;
case RT_I2C_DEV_CTRL_10BIT:
FI2cConfig *config_p = &i2c_bus->i2c_handle.config;
config_p->use_7bit_addr = FALSE;
FI2cCfgInitialize(&i2c_bus->i2c_handle, config_p);
break;
default:
return -RT_EIO;
}
return RT_EOK;
}
static rt_ssize_t i2c_master_xfer(struct rt_i2c_bus_device *device, struct rt_i2c_msg msgs[], rt_uint32_t num)
{
RT_ASSERT(device);
u32 ret;
struct rt_i2c_msg *pmsg;
struct phytium_i2c_bus *i2c_bus;
i2c_bus = (struct phytium_i2c_bus *)(device);
u8 mem_addr = msgs->buf[0];
for (int i = 0; i < num; i++)
{
pmsg = i2c_bus->msg = &msgs[i];
i2c_bus->i2c_handle.config.slave_addr = pmsg->addr;
if (pmsg->flags & RT_I2C_RD)
{
ret = FI2cMasterReadPoll(&i2c_bus->i2c_handle, mem_addr, 1, &pmsg->buf[0], sizeof(pmsg->buf));
if (ret != FI2C_SUCCESS)
{
LOG_E("I2C master read failed!\n");
return RT_ERROR;
}
}
else
{
ret = FI2cMasterWritePoll(&i2c_bus->i2c_handle, mem_addr, 1, &pmsg->buf[1], sizeof(pmsg->buf) - 1);
if (ret != FI2C_SUCCESS)
{
LOG_E("I2C master write failed!\n");
return RT_ERROR;
}
}
}
return RT_EOK;
}
static const struct rt_i2c_bus_device_ops _i2c_ops =
{
.master_xfer = i2c_master_xfer,
.slave_xfer = NULL,
.i2c_bus_control = i2c_bus_control
};
#if defined(I2C_USE_CONTROLLER)
static int i2c_controller_init(u32 i2c_id)
{
u32 ret = RT_EOK;
ret = i2c_config(&i2c_bus[i2c_id]);
if (ret != FI2C_SUCCESS)
{
LOG_E("I2C config failed.\n");
return RT_ERROR;
}
i2c_bus[i2c_id].device.ops = &_i2c_ops;
ret = rt_i2c_bus_device_register(&i2c_bus[i2c_id].device, i2c_bus[i2c_id].name);
LOG_D("I2C bus reg success.\n");
RT_ASSERT(RT_EOK == ret);
return ret;
}
#endif
#if defined(I2C_USE_MIO)
static int i2c_mio_init(u32 i2c_mio_id)
{
u32 ret = RT_EOK;
ret = i2c_mio_config(&i2c_mio_bus[i2c_mio_id]);
if (ret != FI2C_SUCCESS)
{
LOG_E("I2C mio config failed.\n");
return RT_ERROR;
}
i2c_mio_bus[i2c_mio_id].device.ops = &_i2c_ops;
ret = rt_i2c_bus_device_register(&i2c_mio_bus[i2c_mio_id].device, i2c_mio_bus[i2c_mio_id].name);
LOG_D("I2C mio bus reg success.\n");
RT_ASSERT(RT_EOK == ret);
return ret;
}
#endif
int rt_hw_i2c_init(void)
{
rt_err_t ret = RT_EOK;
#if defined(I2C_USE_CONTROLLER)
#if defined(RT_USING_I2C0)
i2c_controller_init(FI2C0_ID);
#endif
#if defined(RT_USING_I2C1)
i2c_controller_init(FI2C1_ID);
#endif
#if defined(RT_USING_I2C2)
i2c_controller_init(FI2C2_ID);
#endif
#endif
#if defined(I2C_USE_MIO)
#if defined(RT_USING_MIO0)
i2c_mio_init(FMIO0_ID);
#endif
#if defined(RT_USING_MIO1)
i2c_mio_init(FMIO1_ID);
#endif
#if defined(RT_USING_MIO2)
i2c_mio_init(FMIO2_ID);
#endif
#if defined(RT_USING_MIO3)
i2c_mio_init(FMIO3_ID);
#endif
#if defined(RT_USING_MIO4)
i2c_mio_init(FMIO4_ID);
#endif
#if defined(RT_USING_MIO5)
i2c_mio_init(FMIO5_ID);
#endif
#if defined(RT_USING_MIO6)
i2c_mio_init(FMIO6_ID);
#endif
#if defined(RT_USING_MIO7)
i2c_mio_init(FMIO7_ID);
#endif
#if defined(RT_USING_MIO8)
i2c_mio_init(FMIO8_ID);
#endif
#if defined(RT_USING_MIO9)
i2c_mio_init(FMIO9_ID);
#endif
#if defined(RT_USING_MIO10)
i2c_mio_init(FMIO10_ID);
#endif
#if defined(RT_USING_MIO11)
i2c_mio_init(FMIO11_ID);
#endif
#if defined(RT_USING_MIO12)
i2c_mio_init(FMIO12_ID);
#endif
#if defined(RT_USING_MIO13)
i2c_mio_init(FMIO13_ID);
#endif
#if defined(RT_USING_MIO14)
i2c_mio_init(FMIO14_ID);
#endif
#if defined(RT_USING_MIO15)
i2c_mio_init(FMIO15_ID);
#endif
#endif
return 0;
}
INIT_DEVICE_EXPORT(rt_hw_i2c_init);
static struct rt_i2c_bus_device *i2c_test_bus = RT_NULL; /* I2C总线设备句柄 */
int i2c_sample(int argc, char *argv[])
{
char name[RT_NAME_MAX];
rt_strncpy(name, "MIO15", RT_NAME_MAX);
i2c_test_bus = (struct rt_i2c_bus_device *)rt_device_find(name);
rt_uint8_t read_buf[2] = {0x02, 0x0};
rt_uint8_t write_buf[2] = {0x02, 0x01};
if (i2c_test_bus == RT_NULL)
{
rt_kprintf("can't find %s device!\n", name);
}
else
{
rt_kprintf("find %s device!!!!\n", name);
}
struct rt_i2c_msg read_msgs;
read_msgs.addr = 0x6B;
read_msgs.flags = RT_I2C_RD;
read_msgs.buf = read_buf;
read_msgs.len = 1;
rt_i2c_transfer(i2c_test_bus, &read_msgs, 1);
rt_kprintf("read_buf = %x\n", *read_msgs.buf);
struct rt_i2c_msg write_msgs;
write_msgs.addr = 0x6B;
write_msgs.flags = RT_I2C_WR;
write_msgs.buf = write_buf;
write_msgs.len = 1;
rt_i2c_transfer(i2c_test_bus, &write_msgs, 1);
read_buf[0] = 0x02;
rt_i2c_transfer(i2c_test_bus, &read_msgs, 1);
rt_kprintf("read_buf = %x\n", *read_msgs.buf);
return RT_EOK;
}
MSH_CMD_EXPORT(i2c_sample, i2c device sample);
#endif
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