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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
* MFD driver for Active - semi ACT8945a PMIC
*
* Copyright ( C ) 2015 Atmel Corporation .
*
* Author : Wenyou Yang < wenyou . yang @ atmel . com >
*/
# include <linux/i2c.h>
# include <linux/mfd/core.h>
# include <linux/module.h>
# include <linux/of_device.h>
# include <linux/regmap.h>
static const struct mfd_cell act8945a_devs [ ] = {
{
. name = " act8945a-regulator " ,
} ,
{
. name = " act8945a-charger " ,
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. of_compatible = " active-semi,act8945a-charger " ,
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} ,
} ;
static const struct regmap_config act8945a_regmap_config = {
. reg_bits = 8 ,
. val_bits = 8 ,
} ;
static int act8945a_i2c_probe ( struct i2c_client * i2c ,
const struct i2c_device_id * id )
{
int ret ;
struct regmap * regmap ;
regmap = devm_regmap_init_i2c ( i2c , & act8945a_regmap_config ) ;
if ( IS_ERR ( regmap ) ) {
ret = PTR_ERR ( regmap ) ;
dev_err ( & i2c - > dev , " regmap init failed: %d \n " , ret ) ;
return ret ;
}
i2c_set_clientdata ( i2c , regmap ) ;
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ret = devm_mfd_add_devices ( & i2c - > dev , PLATFORM_DEVID_NONE ,
act8945a_devs , ARRAY_SIZE ( act8945a_devs ) ,
NULL , 0 , NULL ) ;
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if ( ret ) {
dev_err ( & i2c - > dev , " Failed to add sub devices \n " ) ;
return ret ;
}
return 0 ;
}
static const struct i2c_device_id act8945a_i2c_id [ ] = {
{ " act8945a " , 0 } ,
{ }
} ;
MODULE_DEVICE_TABLE ( i2c , act8945a_i2c_id ) ;
static const struct of_device_id act8945a_of_match [ ] = {
{ . compatible = " active-semi,act8945a " , } ,
{ } ,
} ;
MODULE_DEVICE_TABLE ( of , act8945a_of_match ) ;
static struct i2c_driver act8945a_i2c_driver = {
. driver = {
. name = " act8945a " ,
. of_match_table = of_match_ptr ( act8945a_of_match ) ,
} ,
. probe = act8945a_i2c_probe ,
. id_table = act8945a_i2c_id ,
} ;
static int __init act8945a_i2c_init ( void )
{
return i2c_add_driver ( & act8945a_i2c_driver ) ;
}
subsys_initcall ( act8945a_i2c_init ) ;
static void __exit act8945a_i2c_exit ( void )
{
i2c_del_driver ( & act8945a_i2c_driver ) ;
}
module_exit ( act8945a_i2c_exit ) ;
MODULE_DESCRIPTION ( " ACT8945A PMIC multi-function driver " ) ;
MODULE_AUTHOR ( " Wenyou Yang <wenyou.yang@atmel.com> " ) ;
MODULE_LICENSE ( " GPL " ) ;