u-boot/drivers/power/sy8106a.c
Jernej Skrabec ae4e4dde52 sunxi: power: Compile sy8106a driver only during SPL build
Driver for that regulator is used only in SPL and it uses old I2C
interface. If we want to use DM I2C in U-Boot proper, compilation of
this driver has to be limited only to SPL.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-04-28 09:18:54 +02:00

31 lines
670 B
C

/*
* (C) Copyright 2016
* Jelle van der Waa <jelle@vdwaa.nl>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <sy8106a.h>
#define SY8106A_I2C_ADDR 0x65
#define SY8106A_VOUT1_SEL 1
#define SY8106A_VOUT1_SEL_ENABLE (1 << 7)
#ifdef CONFIG_SPL_BUILD
static u8 sy8106a_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
if (mvolt < min)
mvolt = min;
else if (mvolt > max)
mvolt = max;
return (mvolt - min) / div;
}
int sy8106a_set_vout1(unsigned int mvolt)
{
u8 data = sy8106a_mvolt_to_cfg(mvolt, 680, 1950, 10) | SY8106A_VOUT1_SEL_ENABLE;
return i2c_write(SY8106A_I2C_ADDR, SY8106A_VOUT1_SEL, 1, &data, 1);
}
#endif