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mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a

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Signed-off-by: Alistair Francis <alistair@alistair23.me>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Alistair Francis 2022-01-24 22:10:04 +10:00 committed by Lee Jones
parent bae5a4acef
commit 5913eb45d0
2 changed files with 45 additions and 0 deletions
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11
drivers/mfd/simple-mfd-i2c.c
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@ -62,8 +62,19 @@ static int simple_mfd_i2c_probe(struct i2c_client *i2c)
return ret;
}
static const struct mfd_cell sy7636a_cells[] = {
{ .name = "sy7636a-regulator", },
{ .name = "sy7636a-temperature", },
};
static const struct simple_mfd_data silergy_sy7636a = {
.mfd_cell = sy7636a_cells,
.mfd_cell_size = ARRAY_SIZE(sy7636a_cells),
};
static const struct of_device_id simple_mfd_i2c_of_match[] = {
{ .compatible = "kontron,sl28cpld" },
{ .compatible = "silergy,sy7636a", .data = &silergy_sy7636a},
{}
};
MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);

34
include/linux/mfd/sy7636a.h Normal file
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@ -0,0 +1,34 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Functions to access SY3686A power management chip.
*
* Copyright (C) 2021 reMarkable AS - http://www.remarkable.com/
*/
#ifndef __MFD_SY7636A_H
#define __MFD_SY7636A_H
#define SY7636A_REG_OPERATION_MODE_CRL 0x00
/* It is set if a gpio is used to control the regulator */
#define SY7636A_OPERATION_MODE_CRL_VCOMCTL BIT(6)
#define SY7636A_OPERATION_MODE_CRL_ONOFF BIT(7)
#define SY7636A_REG_VCOM_ADJUST_CTRL_L 0x01
#define SY7636A_REG_VCOM_ADJUST_CTRL_H 0x02
#define SY7636A_REG_VCOM_ADJUST_CTRL_MASK 0x01ff
#define SY7636A_REG_VLDO_VOLTAGE_ADJULST_CTRL 0x03
#define SY7636A_REG_POWER_ON_DELAY_TIME 0x06
#define SY7636A_REG_FAULT_FLAG 0x07
#define SY7636A_FAULT_FLAG_PG BIT(0)
#define SY7636A_REG_TERMISTOR_READOUT 0x08
#define SY7636A_REG_MAX 0x08
#define VCOM_ADJUST_CTRL_MASK 0x1ff
// Used to shift the high byte
#define VCOM_ADJUST_CTRL_SHIFT 8
// Used to scale from VCOM_ADJUST_CTRL to mv
#define VCOM_ADJUST_CTRL_SCAL 10000
#define FAULT_FLAG_SHIFT 1
#endif /* __LINUX_MFD_SY7636A_H */