94292d7e95
Most of the gpio controller cannot configure or get the configuration of the pin muxing as it's usually handled in the pinctrl driver. But they can know what is the pinmuxing driver either because they are child of it or via the gpio-range property. Add some new methods to fdt_pinctrl that a pin controller can implement. Some methods are : fdt_pinctrl_is_gpio: Use to know if the pin in the gpio mode fdt_pinctrl_set_flags: Set the flags of the pin (pullup/pulldown etc ...) fdt_pinctrl_get_flags: Get the flags of the pin (pullup/pulldown etc ...) The defaults method returns EOPNOTSUPP. Reviewed by: ian, bcr (manpages) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D23093
118 lines
2.9 KiB
Objective-C
118 lines
2.9 KiB
Objective-C
#-
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# Copyright (c) 2014 Ian Lepore
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <dev/ofw/openfirm.h>
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#
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# This is the interface that fdt_pinctrl drivers provide to other drivers.
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#
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INTERFACE fdt_pinctrl;
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CODE {
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static int
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fdt_pinctrl_default_is_gpio(device_t pinctrl, device_t gpio, bool *is_gpio)
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{
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return (EOPNOTSUPP);
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}
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static int
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fdt_pinctrl_default_set_flags(device_t pinctrl, device_t gpio, uint32_t pin,
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uint32_t flags)
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{
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return (EOPNOTSUPP);
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}
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static int
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fdt_pinctrl_default_get_flags(device_t pinctrl, device_t gpio, uint32_t pin,
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uint32_t *flags)
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{
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return (EOPNOTSUPP);
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}
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};
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# Needed for timestamping device probe/attach calls
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HEADER {
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#include <sys/tslog.h>
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}
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#
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# Set pins to the specified configuration. The cfgxref arg is an xref phandle
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# to a descendent node (child, grandchild, ...) of the pinctrl device node.
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# Returns 0 on success or a standard errno value.
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#
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PROLOG {
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TSENTER2(device_get_name(pinctrl));
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}
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EPILOG {
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TSEXIT2(device_get_name(pinctrl));
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}
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METHOD int configure {
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device_t pinctrl;
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phandle_t cfgxref;
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};
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#
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# Test if the pin is in gpio mode
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# Called from a gpio device
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#
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METHOD int is_gpio {
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device_t pinctrl;
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device_t gpio;
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uint32_t pin;
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bool *is_gpio;
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} DEFAULT fdt_pinctrl_default_is_gpio;
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#
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# Set the flags of a pin
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# Called from a gpio device
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#
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METHOD int set_flags {
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device_t pinctrl;
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device_t gpio;
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uint32_t pin;
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uint32_t flags;
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} DEFAULT fdt_pinctrl_default_set_flags;
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#
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# Get the flags of a pin
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# Called from a gpio device
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#
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METHOD int get_flags {
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device_t pinctrl;
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device_t gpio;
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uint32_t pin;
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uint32_t *flags;
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} DEFAULT fdt_pinctrl_default_get_flags;
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