148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
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/*
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* \brief Gpio session interface
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* \author Ivan Loskutov <ivan.loskutov@ksyslabs.org>
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* \date 2012-06-23
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*/
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/*
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* Copyright (C) 2012 Ksys Labs LLC
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* Copyright (C) 2012 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__GPIO_SESSION__GPIO_SESSION_H_
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#define _INCLUDE__GPIO_SESSION__GPIO_SESSION_H_
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#include <base/signal.h>
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#include <dataspace/capability.h>
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#include <session/session.h>
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namespace Gpio {
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using namespace Genode;
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struct Session : Genode::Session
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{
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static const char *service_name() { return "Gpio"; }
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virtual ~Session() { }
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/**
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* Configure direction on a specified GPIO pin as output
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*
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* \param gpio number of the pin
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* \param enable logic level on the pin
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*/
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virtual void direction_output(int gpio, bool enable) = 0;
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/**
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* Configure direction on a specified GPIO pin as input
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*
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* \param gpio number of the pin
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*/
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virtual void direction_input(int gpio) = 0;
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/**
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* Set the logic level on a specified GPIO pin
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*
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* \param gpio number of the pin
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* \param enable logic level on the pin
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*/
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virtual void dataout(int gpio, bool enable) = 0;
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/**
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* Read the logic level on a specified GPIO pin
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*
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* \param gpio number of the pin
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*
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* \return level on specified GPIO pin
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*/
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virtual int datain(int gpio) = 0;
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/**
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* Enable the debounce on a specified input GPIO pin
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*
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* \param gpio number of the pin
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*/
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virtual void debounce_enable(int gpio, bool enable) = 0;
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/**
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* Set the debouncing time for all input pins of GPIO bank
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*
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* \param gpio number of the pin
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*/
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virtual void debouncing_time(int gpio, unsigned int us) = 0;
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/**
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* Configure the interrupt request on occurence of a falling edge on
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* a specified input GPIO pin
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*
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* \param gpio number of the pin
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*/
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virtual void falling_detect(int gpio, bool enable) = 0;
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/**
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* Configure the interrupt request on occurence of a rising edge on
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* a specified input GPIO pin
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*
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* \param gpio number of the pin
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*/
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virtual void rising_detect(int gpio, bool enable) = 0;
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/**
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* Enable or disable the interrupt on a specified GPIO pin
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*
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* \param gpio number of the pin
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* \param enable interrupt status( true - enable, false - disable)
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*/
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virtual void irq_enable(int gpio, bool enable) = 0;
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/**
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* Register signal handler to be notified on interrupt on a specified
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* GPIO pin
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*
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* \param cap capability of signal-context to handle GPIO
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* interrupt
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* \param gpio number of the pin
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*
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* This function is used for a set up signal handler for a specified
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* GPIO interrupt. Signal emited to the client if IRQ on pin configured
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* when the driver handles this IRQ.
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*/
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virtual void irq_sigh(Signal_context_capability cap, int gpio) = 0;
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/*******************
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** RPC interface **
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*******************/
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GENODE_RPC(Rpc_direction_output, void, direction_output, int, bool);
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GENODE_RPC(Rpc_direction_input, void, direction_input, int);
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GENODE_RPC(Rpc_dataout, void, dataout, int, bool);
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GENODE_RPC(Rpc_datain, int, datain, int);
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GENODE_RPC(Rpc_debounce_enable, void, debounce_enable, int, bool);
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GENODE_RPC(Rpc_debouncing_time, void, debouncing_time, int, unsigned int);
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GENODE_RPC(Rpc_falling_detect, void, falling_detect, int, bool);
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GENODE_RPC(Rpc_rising_detect, void, rising_detect, int, bool);
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GENODE_RPC(Rpc_irq_enable, void, irq_enable, int, bool);
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GENODE_RPC(Rpc_irq_sigh, void, irq_sigh, Signal_context_capability, int);
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typedef Meta::Type_tuple<Rpc_direction_output,
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Meta::Type_tuple<Rpc_direction_input,
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Meta::Type_tuple<Rpc_dataout,
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Meta::Type_tuple<Rpc_datain,
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Meta::Type_tuple<Rpc_debounce_enable,
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Meta::Type_tuple<Rpc_debouncing_time,
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Meta::Type_tuple<Rpc_falling_detect,
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Meta::Type_tuple<Rpc_rising_detect,
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Meta::Type_tuple<Rpc_irq_enable,
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Meta::Type_tuple<Rpc_irq_sigh,
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Meta::Empty>
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> > > > > > > > > Rpc_functions;
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};
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}
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#endif /* _INCLUDE__GPIO_SESSION__GPIO_SESSION_H_ */
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