51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
/*
|
||
|
|
* max1586.h -- Voltage regulation for the Maxim 1586
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 Robert Jarzmik
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef REGULATOR_MAX1586
|
||
|
|
#define REGULATOR_MAX1586
|
||
|
|
|
||
|
|
#include <linux/regulator/machine.h>
|
||
|
|
|
||
|
|
#define MAX1586_V3 0
|
||
|
|
#define MAX1586_V6 1
|
||
|
|
|
||
|
|
/* precalculated values for v3_gain */
|
||
|
|
#define MAX1586_GAIN_NO_R24 1000000 /* 700000 .. 1475000 mV */
|
||
|
|
#define MAX1586_GAIN_R24_3k32 1051098 /* 735768 .. 1550369 mV */
|
||
|
|
#define MAX1586_GAIN_R24_5k11 1078648 /* 755053 .. 1591005 mV */
|
||
|
|
#define MAX1586_GAIN_R24_7k5 1115432 /* 780802 .. 1645262 mV */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* max1586_subdev_data - regulator data
|
||
|
|
* @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
|
||
|
|
* @name: regulator cute name (example for V3: "vcc_core")
|
||
|
|
* @platform_data: regulator init data (constraints, supplies, ...)
|
||
|
|
*/
|
||
|
|
struct max1586_subdev_data {
|
||
|
|
int id;
|
||
|
|
const char *name;
|
||
|
|
struct regulator_init_data *platform_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* max1586_platform_data - platform data for max1586
|
||
|
|
* @num_subdevs: number of regulators used (may be 1 or 2)
|
||
|
|
* @subdevs: regulator used
|
||
|
|
* At most, there will be a regulator for V3 and one for V6 voltages.
|
||
|
|
* @v3_gain: gain on the V3 voltage output multiplied by 1e6.
|
||
|
|
* This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6)
|
||
|
|
* for an external resistor configuration as described in the
|
||
|
|
* data sheet (R25=100kOhm).
|
||
|
|
*/
|
||
|
|
struct max1586_platform_data {
|
||
|
|
int num_subdevs;
|
||
|
|
struct max1586_subdev_data *subdevs;
|
||
|
|
int v3_gain;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|