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realtek-doc/sources/rtk-xgs1210/system/drv/i2c/i2c.c
Markus Stockhausen 18a30ac6d1 add XGS1210 sdk
2025-04-27 15:53:52 -04:00

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/*
* Copyright (C) 2009-2016 Realtek Semiconductor Corp.
* All Rights Reserved.
*
* This program is the proprietary software of Realtek Semiconductor
* Corporation and/or its licensors, and only be used, duplicated,
* modified or distributed under the authorized license from Realtek.
*
* ANY USE OF THE SOFTWARE OTHER THAN AS AUTHORIZED UNDER
* THIS LICENSE OR COPYRIGHT LAW IS PROHIBITED.
*
* $Revision: 88229 $
* $Date: 2018-05-23 19:33:47 +0800 (Wed, 23 May 2018) $
*
* Purpose : Definition of SPI API
*
*
*/
/*
* Include Files
*/
#include <private/drv/swcore/swcore.h>
#include <private/drv/swcore/chip_probe.h>
#include <drv/i2c/i2c.h>
#include <private/drv/i2c/i2c_mapper.h>
#include <common/debug/rt_log.h>
#include <hwp/hw_profile.h>
#include <osal/lib.h>
#include <osal/sem.h>
#include <osal/print.h>
/*
* Symbol Definition
*/
/*
* Data Declaration
*/
i2c_devInfo_t gI2C_dev[RTK_MAX_NUM_OF_UNIT][I2C_DEV_ID_END];
static osal_mutex_t i2c_sem[RTK_MAX_NUM_OF_UNIT];
/*
* Macro Definition
*/
#define I2C_SEM_LOCK(unit) \
do {\
if (osal_sem_mutex_take(i2c_sem[unit], OSAL_SEM_WAIT_FOREVER) != RT_ERR_OK)\
{\
return RT_ERR_SEM_LOCK_FAILED;\
}\
} while(0)
#define I2C_SEM_UNLOCK(unit) \
do {\
if (osal_sem_mutex_give(i2c_sem[unit]) != RT_ERR_OK)\
{\
return RT_ERR_SEM_UNLOCK_FAILED;\
}\
} while(0)
/*
* Function Declaration
*/
/* Function Name:
* drv_i2c_init
* Description:
* Initialize I2C module.
* Input:
* unit - unit id
* Output:
* None
* Return:
* RT_ERR_OK
* RT_ERR_FAILED
* RT_ERR_UNIT_ID - invalid unit id
* RT_ERR_NULL_POINTER - input parameter may be null pointer
* Applicable:
* 8380, 8390, 9300, 9310
* Note:
* Must initialize i2c module before calling any i2c APIs.
* Changes:
* [SDK_3.0.0]
* New added function.
*/
int32
drv_i2c_init(uint32 unit)
{
uint32 idx;
RT_PARAM_CHK((unit > RTK_MAX_UNIT_ID || unit != HWP_MY_UNIT_ID()), RT_ERR_UNIT_ID);
RT_PARAM_CHK(!I2C_CHK(unit), RT_ERR_CHIP_NOT_FOUND);
RT_INIT_MSG(" I2C init (unit %u)\n", unit);
/* create semaphore */
i2c_sem[unit] = osal_sem_mutex_create();
if (0 == i2c_sem[unit])
{
return RT_ERR_FAILED;
}
for(idx = 0; idx < I2C_DEV_ID_END; idx++)
osal_memset(&gI2C_dev[unit][idx], 0x0, sizeof(i2c_devInfo_t));
return I2C_CTRL(unit).init(unit);
} /* end of drv_i2c_init */
/* Function Name:
* drv_i2c_dev_init
* Description:
* Initialize I2C module of the specified device.
* Input:
* unit - unit id
* *i2c_dev - i2c_devConf_t pointer
* Output:
* None
* Return:
* RT_ERR_OK
* RT_ERR_FAILED
* RT_ERR_UNIT_ID - invalid unit id
* RT_ERR_NULL_POINTER - input parameter may be null pointer
* Applicable:
* 8380, 8390, 9300, 9310
* Note:
* Must initialize i2c module before calling any i2c APIs.
* Changes:
* [SDK_3.0.0]
* New added function.
*/
int32
drv_i2c_dev_init(uint32 unit, i2c_devConf_t *i2c_dev)
{
uint32 dev_id;
int32 ret;
RT_PARAM_CHK((unit > RTK_MAX_UNIT_ID || unit != HWP_MY_UNIT_ID()), RT_ERR_UNIT_ID);
RT_PARAM_CHK(!I2C_CHK(unit), RT_ERR_CHIP_NOT_FOUND);
RT_INIT_MSG(" I2C device init (unit %u)\n", unit);
if(i2c_dev->device_id >= I2C_DEV_ID_END)
return RT_ERR_OUT_OF_RANGE;
if(i2c_dev->read_type >= I2C_INTF_READ_TYPE_END)
return RT_ERR_OUT_OF_RANGE;
I2C_SEM_LOCK(unit);
dev_id = i2c_dev->device_id;
osal_memcpy(&gI2C_dev[unit][dev_id].conf, i2c_dev, sizeof(i2c_devConf_t));
ret = I2C_CTRL(unit).i2c_dev_init(unit, &gI2C_dev[unit][dev_id].conf);
I2C_SEM_UNLOCK(unit);
if(ret == RT_ERR_OK)
gI2C_dev[unit][dev_id].init_flag = INIT_COMPLETED;
return ret;
} /* end of drv_i2c_dev_init */
/* Function Name:
* drv_i2c_write
* Description:
* Transmit data via I2C of the specified device.
* Input:
* unit - unit id
* *i2c_dev - i2c_devConf_t pointer
* reg_idx - register index
* *pBuff - transfer data
* Output:
* None
* Return:
* RT_ERR_OK
* RT_ERR_FAILED
* RT_ERR_UNIT_ID - invalid unit id
* RT_ERR_NOT_INIT - The module is not initial
* RT_ERR_NULL_POINTER - input parameter may be null pointer
* Applicable:
* 8380, 8390, 9300, 9310
* Note:
* None
* Changes:
* [SDK_3.0.0]
* New added function.
*/
int32
drv_i2c_write(uint32 unit, drv_i2c_devId_t i2c_dev_id, uint32 reg_idx, uint8 *pBuff)
{
int32 ret = RT_ERR_OK;
RT_PARAM_CHK((unit > RTK_MAX_UNIT_ID || unit != HWP_MY_UNIT_ID()), RT_ERR_UNIT_ID);
RT_PARAM_CHK(!I2C_CHK(unit), RT_ERR_CHIP_NOT_FOUND);
if(i2c_dev_id >= I2C_DEV_ID_END)
return RT_ERR_OUT_OF_RANGE;
if(gI2C_dev[unit][i2c_dev_id].init_flag != INIT_COMPLETED)
return RT_ERR_NOT_INIT;
I2C_SEM_LOCK(unit);
if((ret = I2C_CTRL(unit).i2c_write(unit, &gI2C_dev[unit][i2c_dev_id].conf, reg_idx, pBuff)) != RT_ERR_OK)
{
I2C_SEM_UNLOCK(unit);
return ret;
}
I2C_SEM_UNLOCK(unit);
return ret;
} /* end of drv_i2c_write */
/* Function Name:
* drv_i2c_read
* Description:
* Start the Receice data from I2C.
* Input:
* unit - unit id
* *i2c_dev - i2c_devConf_t pointer
* reg_idx - register index
* Output:
* pBuff - received data
* Return:
* RT_ERR_OK
* RT_ERR_FAILED
* RT_ERR_UNIT_ID - invalid unit id
* RT_ERR_NOT_INIT - The module is not initial
* Applicable:
* 8380, 8390, 9300, 9310
* Note:
* None
* Changes:
* [SDK_3.0.0]
* New added function.
*/
int32
drv_i2c_read(uint32 unit, drv_i2c_devId_t i2c_dev_id, uint32 reg_idx, uint8 *pBuff)
{
int32 ret = RT_ERR_OK;
RT_PARAM_CHK((unit > RTK_MAX_UNIT_ID || unit != HWP_MY_UNIT_ID()), RT_ERR_UNIT_ID);
RT_PARAM_CHK(!I2C_CHK(unit), RT_ERR_CHIP_NOT_FOUND);
if(i2c_dev_id >= I2C_DEV_ID_END)
return RT_ERR_OUT_OF_RANGE;
if(gI2C_dev[unit][i2c_dev_id].init_flag != INIT_COMPLETED)
return RT_ERR_NOT_INIT;
I2C_SEM_LOCK(unit);
if((ret = I2C_CTRL(unit).i2c_read(unit, &gI2C_dev[unit][i2c_dev_id].conf, reg_idx, pBuff)) != RT_ERR_OK)
{
I2C_SEM_UNLOCK(unit);
return ret;
}
I2C_SEM_UNLOCK(unit);
return ret;
} /* end of drv_i2c_read */
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