pinmux: Add API for pinmux driver
This provides the API to manipulte the pin muxing, where a single pin may provide different functions depending on settings. [DL: changed commit message.] Change-Id: Ifd161137c062dff184024b5aa34737604911d09c Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com> Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This commit is contained in:
Dan Kalowsky
Anas Nashif
parent
f84b8b3707
commit
2d6ba51742
4 changed files with 217 additions and 0 deletions
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@ -57,4 +57,6 @@ source "drivers/i2c/Kconfig"
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source "drivers/pwm/Kconfig"
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source "drivers/pinmux/Kconfig"
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endmenu
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89
drivers/pinmux/Kconfig
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89
drivers/pinmux/Kconfig
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@ -0,0 +1,89 @@
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# Kconfig - Pinmux configuration options
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#
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# Copyright (c) 2015 Intel Corporation
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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 are met:
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#
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# 1) Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2) Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3) Neither the name of Intel Corporation nor the names of its contributors
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# may be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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#
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# PinMux options
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#
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menuconfig PINMUX
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bool "Enable platform pinmux driver"
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default n
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config PINMUX_BASE
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hex "Base Address"
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depends on PINMUX
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help
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On platforms where there is a base pinmux register, set this value to
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enable the driver to directly access the memory.
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config PINMUX_NUM_PINS
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int "Number of Pins to configure"
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depends on PINMUX
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help
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Select the number of pins for the pinmux to operate on.
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config PINMUX_DEV
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bool "Configure pinmux for early board testing"
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depends on PINMUX
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default n
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help
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Enables the use of the pinmux_set and pinmux_get functions for early
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prototyping on new hardware. WARNING: When using these options, it
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is possible to permanently damage the hardware.
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config PINMUX_GALILEO_EXP0_NAME
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string "Name of the GPIO expander 0"
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depends on PINMUX && PLATFORM_GALILEO
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default "EXP0"
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help
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The name of the GPIO expander labelled as EXP0 in the schematic.
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config PINMUX_GALILEO_EXP1_NAME
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string "Name of the GPIO expander 1"
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depends on PINMUX && PLATFORM_GALILEO
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default "EXP1"
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help
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The name of the GPIO expander labelled as EXP1 in the schematic.
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config PINMUX_GALILEO_EXP2_NAME
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string "Name of the GPIO expander 2"
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depends on PINMUX && PLATFORM_GALILEO
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default "EXP2"
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help
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The name of the GPIO expander labelled as EXP2 in the schematic.
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config PINMUX_GALILEO_PWM0_NAME
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string "Name of the PWM LED expander 0"
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depends on PINMUX && PLATFORM_GALILEO
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default "PWM0"
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help
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The name of the PWM LED expander labelled as PWM0 in the schematic.
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51
drivers/pinmux/pinmux.h
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51
drivers/pinmux/pinmux.h
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@ -0,0 +1,51 @@
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/* pinmux.h - the private pinmux driver header */
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/*
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* Copyright (c) 2015 Intel Corporation
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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 are
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* met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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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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* 3) Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DRIVERS_PINMUX_H
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#define __DRIVERS_PINMUX_H
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#include <stdint.h>
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#include <device.h>
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struct pin_config {
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uint8_t pin_num;
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uint8_t mode;
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};
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struct pinmux_config {
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uint32_t base_address;
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};
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extern int pinmux_initialize(struct device *port);
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extern int pinmux_galileo_initialize(struct device *port);
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#endif /* __DRIVERS_PINMUX_H */
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75
include/pinmux.h
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75
include/pinmux.h
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@ -0,0 +1,75 @@
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/* pinmux.h - the private pinmux driver header */
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/*
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* Copyright (c) 2015 Intel Corporation
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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 are
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* met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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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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* 3) Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __INCLUDE_PINMUX_H
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#define __INCLUDE_PINMUX_H
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#include <stdint.h>
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#include <device.h>
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#define PINMUX_NAME "pinmux"
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#define PINMUX_FUNC_A 0
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#define PINMUX_FUNC_B 1
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#define PINMUX_FUNC_C 2
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#define PINMUX_FUNC_D 3
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typedef uint32_t (*pmux_set)(struct device *dev, uint32_t pin, uint8_t func);
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typedef uint32_t (*pmux_get)(struct device *dev, uint32_t pin, uint8_t *func);
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struct pinmux_driver_api {
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pmux_set set;
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pmux_get get;
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};
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static inline uint32_t pinmux_set_pin(struct device *dev,
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uint32_t pin,
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uint8_t func)
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{
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struct pinmux_driver_api *api;
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api = (struct pinmux_driver_api *) dev->driver_api;
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return api->set(dev, pin, func);
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}
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static inline uint32_t pinmux_get_pin(struct device *dev,
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uint32_t pin,
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uint8_t *func)
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{
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struct pinmux_driver_api *api;
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api = (struct pinmux_driver_api *) dev->driver_api;
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return api->get(dev, pin, func);
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}
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#endif /* __INCLUDE_PINMUX_H */
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