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rt-thread-official/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"
#include <rtdevice.h>
#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
/*Please define the length of the mem_addr of the device*/
#ifndef FI2C_DEVICE_MEMADDR_LEN
#define FI2C_DEVICE_MEMADDR_LEN 2
#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 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;
}
mio_handle.is_ready = 0;
memset(&mio_handle, 0, sizeof(mio_handle));
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);
FI2cConfig *config_p;
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:
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;
rt_ssize_t i;
struct phytium_i2c_bus *i2c_bus;
i2c_bus = (struct phytium_i2c_bus *)(device);
uintptr mem_addr = 0;
for (i = 0; i < num; i++)
{
pmsg = &msgs[i];
for (u32 j = 0; j <FI2C_DEVICE_MEMADDR_LEN; j++)
{
mem_addr |= msgs[i].buf[j] << (8 * (FI2C_DEVICE_MEMADDR_LEN - 1 - j));
}
i2c_bus->i2c_handle.config.slave_addr = pmsg->addr;
if (pmsg->flags & RT_I2C_RD)
{
rt_thread_delay(100);
ret = FI2cMasterReadPoll(&i2c_bus->i2c_handle, mem_addr, FI2C_DEVICE_MEMADDR_LEN, &pmsg->buf[0], pmsg->len - FI2C_DEVICE_MEMADDR_LEN);
if (ret != FI2C_SUCCESS)
{
LOG_E("I2C master read failed!\n");
return -RT_ERROR;
}
}
else
{
rt_thread_delay(100);
ret = FI2cMasterWritePoll(&i2c_bus->i2c_handle, mem_addr, FI2C_DEVICE_MEMADDR_LEN, &pmsg->buf[FI2C_DEVICE_MEMADDR_LEN], pmsg->len - FI2C_DEVICE_MEMADDR_LEN);
if (ret != FI2C_SUCCESS)
{
LOG_E("I2C master write failed!\n");
return -RT_ERROR;
}
}
}
return i;
}
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(struct phytium_i2c_bus *i2c_controller_bus)
{
rt_err_t ret = RT_EOK;
ret = i2c_config(i2c_controller_bus);
if (ret != RT_EOK)
{
LOG_E("I2C config failed.\n");
return -RT_ERROR;
}
i2c_controller_bus->device.ops = &_i2c_ops;
ret = rt_i2c_bus_device_register(&i2c_controller_bus->device, i2c_controller_bus->name);
RT_ASSERT(RT_EOK == ret);
LOG_D("I2C bus reg success.\n");
return ret;
}
#endif
#if defined(I2C_USE_MIO)
static int i2c_mio_init(struct phytium_i2c_bus *i2c_mio_bus)
{
rt_err_t ret = RT_EOK;
ret = i2c_mio_config(i2c_mio_bus);
if (ret != RT_EOK)
{
LOG_E("I2C mio config failed.\n");
return -RT_ERROR;
}
i2c_mio_bus->device.ops = &_i2c_ops;
ret = rt_i2c_bus_device_register(&i2c_mio_bus->device, i2c_mio_bus->name);
RT_ASSERT(RT_EOK == ret);
LOG_D("I2C mio bus reg success.\n");
return ret;
}
#endif
#if defined(RT_USING_I2C0)
static struct phytium_i2c_bus i2c_controller0_bus;
#endif
#if defined(RT_USING_I2C1)
static struct phytium_i2c_bus i2c_controller1_bus;
#endif
#if defined(RT_USING_I2C2)
static struct phytium_i2c_bus i2c_controller2_bus;
#endif
#if defined(RT_USING_MIO0)
static struct phytium_i2c_bus i2c_mio0_bus;
#endif
#if defined(RT_USING_MIO1)
static struct phytium_i2c_bus i2c_mio1_bus;
#endif
#if defined(RT_USING_MIO2)
static struct phytium_i2c_bus i2c_mio2_bus;
#endif
#if defined(RT_USING_MIO3)
static struct phytium_i2c_bus i2c_mio3_bus;
#endif
#if defined(RT_USING_MIO4)
static struct phytium_i2c_bus i2c_mio4_bus;
#endif
#if defined(RT_USING_MIO5)
static struct phytium_i2c_bus i2c_mio5_bus;
#endif
#if defined(RT_USING_MIO6)
static struct phytium_i2c_bus i2c_mio6_bus;
#endif
#if defined(RT_USING_MIO7)
static struct phytium_i2c_bus i2c_mio7_bus;
#endif
#if defined(RT_USING_MIO8)
static struct phytium_i2c_bus i2c_mio8_bus;
#endif
#if defined(RT_USING_MIO9)
static struct phytium_i2c_bus i2c_mio9_bus;
#endif
#if defined(RT_USING_MIO10)
static struct phytium_i2c_bus i2c_mio10_bus;
#endif
#if defined(RT_USING_MIO11)
static struct phytium_i2c_bus i2c_mio11_bus;
#endif
#if defined(RT_USING_MIO12)
static struct phytium_i2c_bus i2c_mio12_bus;
#endif
#if defined(RT_USING_MIO13)
static struct phytium_i2c_bus i2c_mio13_bus;
#endif
#if defined(RT_USING_MIO14)
static struct phytium_i2c_bus i2c_mio14_bus;
#endif
#if defined(RT_USING_MIO15)
static struct phytium_i2c_bus i2c_mio15_bus;
#endif
int rt_hw_i2c_init(void)
{
#if defined(RT_USING_I2C0)
i2c_controller0_bus.name = "I2C0";
i2c_controller0_bus.i2c_handle.config.instance_id = FI2C0_ID;
i2c_controller_init(&i2c_controller0_bus);
#endif
#if defined(RT_USING_I2C1)
i2c_controller1_bus.name = "I2C1";
i2c_controller1_bus.i2c_handle.config.instance_id = FI2C1_ID;
i2c_controller_init(&i2c_controller1_bus);
#endif
#if defined(RT_USING_I2C2)
i2c_controller2_bus.name = "I2C2";
i2c_controller2_bus.i2c_handle.config.instance_id = FI2C2_ID;
i2c_controller_init(&i2c_controller2_bus);
#endif
#if defined(RT_USING_MIO0)
i2c_mio0_bus.name = "MIO0";
i2c_mio0_bus.i2c_handle.config.instance_id = FMIO0_ID;
i2c_mio_init(&i2c_mio0_bus);
#endif
#if defined(RT_USING_MIO1)
i2c_mio1_bus.name = "MIO1";
i2c_mio1_bus.i2c_handle.config.instance_id = FMIO1_ID;
i2c_mio_init(&i2c_mio1_bus);
#endif
#if defined(RT_USING_MIO2)
i2c_mio2_bus.name = "MIO2";
i2c_mio2_bus.i2c_handle.config.instance_id = FMIO2_ID;
i2c_mio_init(&i2c_mio2_bus);
#endif
#if defined(RT_USING_MIO3)
i2c_mio3_bus.name = "MIO3";
i2c_mio3_bus.i2c_handle.config.instance_id = FMIO3_ID;
i2c_mio_init(&i2c_mio3_bus);
#endif
#if defined(RT_USING_MIO4)
i2c_mio4_bus.name = "MIO4";
i2c_mio4_bus.i2c_handle.config.instance_id = FMIO4_ID;
i2c_mio_init(&i2c_mio4_bus);
#endif
#if defined(RT_USING_MIO5)
i2c_mio5_bus.name = "MIO5";
i2c_mio5_bus.i2c_handle.config.instance_id = FMIO5_ID;
i2c_mio_init(&i2c_mio5_bus);
#endif
#if defined(RT_USING_MIO6)
i2c_mio6_bus.name = "MIO6";
i2c_mio6_bus.i2c_handle.config.instance_id = FMIO6_ID;
i2c_mio_init(&i2c_mio6_bus);
#endif
#if defined(RT_USING_MIO7)
i2c_mio7_bus.name = "MIO2";
i2c_mio7_bus.i2c_handle.config.instance_id = FMIO7_ID;
i2c_mio_init(&i2c_mio7_bus);
#endif
#if defined(RT_USING_MIO8)
i2c_mio8_bus.name = "MIO8";
i2c_mio8_bus.i2c_handle.config.instance_id = FMIO8_ID;
i2c_mio_init(&i2c_mio8_bus);
#endif
#if defined(RT_USING_MIO9)
i2c_mio9_bus.name = "MIO9";
i2c_mio9_bus.i2c_handle.config.instance_id = FMIO9_ID;
i2c_mio_init(&i2c_mio9_bus);
#endif
#if defined(RT_USING_MIO10)
i2c_mio10_bus.name = "MIO10";
i2c_mio10_bus.i2c_handle.config.instance_id = FMIO10_ID;
i2c_mio_init(&i2c_mio10_bus);
#endif
#if defined(RT_USING_MIO11)
i2c_mio11_bus.name = "MIO11";
i2c_mio11_bus.i2c_handle.config.instance_id = FMIO11_ID;
i2c_mio_init(&i2c_mio11_bus);
#endif
#if defined(RT_USING_MIO12)
i2c_mio12_bus.name = "MIO12";
i2c_mio12_bus.i2c_handle.config.instance_id = FMIO12_ID;
i2c_mio_init(&i2c_mio12_bus);
#endif
#if defined(RT_USING_MIO13)
i2c_mio13_bus.name = "MIO13";
i2c_mio13_bus.i2c_handle.config.instance_id = FMIO13_ID;
i2c_mio_init(&i2c_mio13_bus);
#endif
#if defined(RT_USING_MIO14)
i2c_mio14_bus.name = "MIO14";
i2c_mio14_bus.i2c_handle.config.instance_id = FMIO14_ID;
i2c_mio_init(&i2c_mio14_bus);
#endif
#if defined(RT_USING_MIO15)
i2c_mio15_bus.name = "MIO15";
i2c_mio15_bus.i2c_handle.config.instance_id = FMIO15_ID;
i2c_mio_init(&i2c_mio15_bus);
#endif
return 0;
}
INIT_DEVICE_EXPORT(rt_hw_i2c_init);
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