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/* Philips PCF50606 GPO Driver
*
* (C) 2006-2008 by Openmoko, Inc.
* Author: Balaji Rao <balajirrao@openmoko.org>
* All rights reserved.
*
* Broken down from monstrous PCF50606 driver mainly by
* Harald Welte, Andy Green Werner Almesberger and Matt Hsu
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/mfd/pcf50606/core.h>
#include <linux/mfd/pcf50606/gpo.h>
void pcf50606_gpo_set_active(struct pcf50606 *pcf, int gpo, int val)
{
u8 reg, value, mask;
reg = gpo;
value = val;
mask = 0x07;
if (gpo == PCF50606_GPO2) {
value = val << 4;
mask = 0x07 << 4;
}
pcf50606_reg_set_bit_mask(pcf, reg, mask, value);
}
EXPORT_SYMBOL_GPL(pcf50606_gpo_set_active);
int pcf50606_gpo_get_active(struct pcf50606 *pcf, int gpo)
{
u8 reg, value, shift = 0;
reg = gpo;
if (gpo == PCF50606_GPO2)
shift = 4;
value = pcf50606_reg_read(pcf, reg);
return (value >> shift) & 0x07;
}
EXPORT_SYMBOL_GPL(pcf50606_gpo_get_active);
void pcf50606_gpo_set_standby(struct pcf50606 *pcf, int gpo, int val)
{
u8 reg;
if (gpo == PCF50606_GPO1 || gpo == PCF50606_GPO2) {
dev_err(pcf->dev, "Can't set standby settings for GPO[12]n");
return;
}
reg = gpo;
pcf50606_reg_set_bit_mask(pcf, gpo, 0x07 << 3, val);
}
EXPORT_SYMBOL_GPL(pcf50606_gpo_set_standby);
int pcf50606_gpo_get_standby(struct pcf50606 *pcf, int gpo)
{
u8 reg, value;
if (gpo == PCF50606_GPO1 || gpo == PCF50606_GPO2) {
dev_err(pcf->dev, "Can't get standby settings for GPO[12]n");
return -EINVAL;
}
reg = gpo;
value = pcf50606_reg_read(pcf, reg);
return (value >> 3) & 0x07;
}
EXPORT_SYMBOL_GPL(pcf50606_gpo_get_standby);
void pcf50606_gpo_invert_set(struct pcf50606 *pcf, int gpo, int invert)
{
u8 reg, value, mask;
reg = gpo;
value = !!invert << 6;
mask = 0x01 << 6;
if (gpo == PCF50606_GPO1) {
mask = 0x01 << 4;
value = !!invert << 4;
}
else if (gpo == PCF50606_GPO2) {
mask = 0x01 << 7;
value = !!invert << 7;
}
pcf50606_reg_set_bit_mask(pcf, reg, mask, value);
}
EXPORT_SYMBOL_GPL(pcf50606_gpo_invert_set);
int pcf50606_gpo_invert_get(struct pcf50606 *pcf, int gpo)
{
u8 reg, value, shift;
reg = gpo;
shift = 6;
if (gpo == PCF50606_GPO1)
shift = 4;
else if (gpo == PCF50606_GPO2)
shift = 7;
value = pcf50606_reg_read(pcf, reg);
return (value >> shift) & 0x01;
}
EXPORT_SYMBOL_GPL(pcf50606_gpo_invert_get);
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