bcc0decdc9
For most regulators, the regulator_stop() method can be transformed to regulator disable. But, in some cases, we needs to maintain shared data across multiple regulators (e.g. single GPIO pin which works as enable for multiple regulates). In this case, the implementation of regulator should perform his own enable counting therefore it is necessary to distinguish between the regulator enable/disable method (which increments/decrements enable counter for shared resource) and regulator stop method (which don't affect it). So: - add regnode_stop() method to regulator framework and default it to regnode_enable(..., false, ...) - implement it in regulator_fixed with proper enable counting. While I'm in, also fix handling of always_on property. If any of regulators sharing same GPIO pin have it enabled, then none of them can disable regulator. Tested by: kevans MFC after: 3 weeks
101 lines
2.7 KiB
Objective-C
101 lines
2.7 KiB
Objective-C
#-
|
|
# Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
INTERFACE regnode;
|
|
HEADER {
|
|
struct regnode;
|
|
}
|
|
|
|
CODE {
|
|
static int
|
|
regnode_default_stop(struct regnode *regnode, int *udelay)
|
|
{
|
|
|
|
return(REGNODE_ENABLE(regnode, false, udelay));
|
|
}
|
|
}
|
|
|
|
#
|
|
# Initialize regulator
|
|
# Returns 0 on success or a standard errno value.
|
|
#
|
|
METHOD int init {
|
|
struct regnode *regnode;
|
|
};
|
|
|
|
#
|
|
# Enable/disable regulator
|
|
# Returns 0 on success or a standard errno value.
|
|
# - enable - input.
|
|
# - delay - output, delay needed to stabilize voltage (in us)
|
|
#
|
|
METHOD int enable {
|
|
struct regnode *regnode;
|
|
bool enable;
|
|
int *udelay;
|
|
};
|
|
|
|
#
|
|
# Get regulator status
|
|
# Returns 0 on success or a standard errno value.
|
|
#
|
|
METHOD int status {
|
|
struct regnode *regnode;
|
|
int *status; /* REGULATOR_STATUS_* */
|
|
};
|
|
|
|
#
|
|
# Set regulator voltage
|
|
# Returns 0 on success or a standard errno value.
|
|
# - min_uvolt, max_uvolt - input, requested voltage range (in uV)
|
|
# - delay - output, delay needed to stabilize voltage (in us)
|
|
METHOD int set_voltage {
|
|
struct regnode *regnode;
|
|
int min_uvolt;
|
|
int max_uvolt;
|
|
int *udelay;
|
|
};
|
|
|
|
#
|
|
# Get regulator voltage
|
|
# Returns 0 on success or a standard errno value.
|
|
#
|
|
METHOD int get_voltage {
|
|
struct regnode *regnode;
|
|
int *uvolt;
|
|
};
|
|
|
|
#
|
|
# Stop (shutdown) regulator
|
|
# Returns 0 on success or a standard errno value.
|
|
#
|
|
METHOD int stop {
|
|
struct regnode *regnode;
|
|
int *udelay;
|
|
} DEFAULT regnode_default_stop;
|