Add OMAP4 GPIO driver

Add Gpio session interface. Add test for Pandaboard.

Fixes #427

os/include/gpio_session/capability.h

@@ -0,0 +1,23 @@
+/*
+ * \brief  Gpio session capability type
+ * \author Ivan Loskutov <ivan.loskutov@ksyslabs.org>
+ * \date   2012-06-23
+ */
+
+/*
+ * Copyright (C) 2012 Ksys Labs LLC
+ * Copyright (C) 2012 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__GPIO_SESSION__CAPABILITY_H_
+#define _INCLUDE__GPIO_SESSION__CAPABILITY_H_
+
+#include <base/capability.h>
+#include <gpio_session/gpio_session.h>
+
+namespace Gpio { typedef Genode::Capability<Session> Session_capability; }
+
+#endif /* _INCLUDE__GPIO_SESSION__CAPABILITY_H_ */

os/include/gpio_session/client.h

@@ -0,0 +1,81 @@
+/*
+ * \brief  Client-side Gpio session interface
+ * \author Ivan Loskutov <ivan.loskutov@ksyslabs.org>
+ * \date   2012-06-23
+ */
+
+/*
+ * Copyright (C) 2012 Ksys Labs LLC
+ * Copyright (C) 2012 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__GPIO_SESSION_H__CLIENT_H_
+#define _INCLUDE__GPIO_SESSION_H__CLIENT_H_
+
+#include <gpio_session/capability.h>
+#include <base/rpc_client.h>
+
+namespace Gpio {
+
+	struct Session_client : Genode::Rpc_client<Session>
+	{
+		explicit Session_client(Session_capability session)
+		: Genode::Rpc_client<Session>(session) { }
+
+
+		void direction_output(int gpio, bool enable)
+		{
+			call<Rpc_direction_output>(gpio, enable);
+		}
+
+		void direction_input(int gpio)
+		{
+			call<Rpc_direction_input>(gpio);
+		}
+
+		void dataout(int gpio, bool enable)
+		{
+			call<Rpc_dataout>(gpio, enable);
+		}
+
+		int datain(int gpio)
+		{
+			return call<Rpc_datain>(gpio);
+		}
+
+		void debounce_enable(int gpio, bool enable)
+		{
+			call<Rpc_debounce_enable>(gpio, enable);
+		}
+
+		void debouncing_time(int gpio, unsigned int us)
+		{
+			call<Rpc_debouncing_time>(gpio, us);
+		}
+
+		void falling_detect(int gpio, bool enable)
+		{
+			call<Rpc_falling_detect>(gpio, enable);
+		}
+
+		void rising_detect(int gpio, bool enable)
+		{
+			call<Rpc_rising_detect>(gpio, enable);
+		}
+
+		void irq_enable(int gpio, bool enable)
+		{
+			call<Rpc_irq_enable>(gpio, enable);
+		}
+
+		void irq_sigh(Signal_context_capability cap, int gpio)
+		{
+			call<Rpc_irq_sigh>(cap, gpio);
+		}
+	};
+}
+
+#endif /* _INCLUDE__GPIO_SESSION_H__CLIENT_H_ */

os/include/gpio_session/connection.h

@@ -0,0 +1,33 @@
+/*
+ * \brief  Connection to Gpio session
+ * \author Ivan Loskutov <ivan.loskutov@ksyslabs.org>
+ * \date   2012-06-23
+ */
+
+/*
+ * Copyright (C) 2012 Ksys Labs LLC
+ * Copyright (C) 2012 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__GPIO_SESSION__CONNECTION_H_
+#define _INCLUDE__GPIO_SESSION__CONNECTION_H_
+
+#include <gpio_session/client.h>
+#include <base/connection.h>
+
+namespace Gpio {
+
+	struct Connection : Genode::Connection<Session>, Session_client
+	{
+		Connection()
+		:
+			Genode::Connection<Session>(session("ram_quota=4K")),
+			Session_client(cap())
+		{ }
+	};
+}
+
+#endif /* _INCLUDE__GPIO_SESSION__CONNECTION_H_ */

os/include/gpio_session/gpio_session.h

@@ -0,0 +1,147 @@
+/*
+ * \brief  Gpio session interface
+ * \author Ivan Loskutov <ivan.loskutov@ksyslabs.org>
+ * \date   2012-06-23
+ */
+
+/*
+ * Copyright (C) 2012 Ksys Labs LLC
+ * Copyright (C) 2012 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _INCLUDE__GPIO_SESSION__GPIO_SESSION_H_
+#define _INCLUDE__GPIO_SESSION__GPIO_SESSION_H_
+
+#include <base/signal.h>
+#include <dataspace/capability.h>
+#include <session/session.h>
+
+namespace Gpio {
+
+	using namespace Genode;
+
+	struct Session : Genode::Session
+	{
+		static const char *service_name() { return "Gpio"; }
+
+		virtual ~Session() { }
+
+		/**
+		 * Configure direction on a specified GPIO pin as output
+		 * 
+		 * \param   gpio    number of the pin
+		 * \param   enable  logic level on the pin
+		 */
+		virtual void direction_output(int gpio, bool enable) = 0;
+
+		/**
+		 * Configure direction on a specified GPIO pin as input
+		 * 
+		 * \param   gpio    number of the pin
+		 */
+		virtual void direction_input(int gpio) = 0;
+
+		/**
+		 * Set the logic level on a specified GPIO pin
+		 * 
+		 * \param   gpio    number of the pin
+		 * \param   enable  logic level on the pin
+		 */
+		virtual void dataout(int gpio, bool enable) = 0;
+
+		/**
+		 * Read the logic level on a specified GPIO pin
+		 * 
+		 * \param   gpio    number of the pin
+		 * 
+		 * \return  level on specified GPIO pin
+		 */
+		virtual int  datain(int gpio) = 0;
+
+		/**
+		 * Enable the debounce on a specified input GPIO pin
+		 * 
+		 * \param   gpio    number of the pin
+		 */
+		virtual void debounce_enable(int gpio, bool enable) = 0;
+
+		/**
+		 * Set the debouncing time for all input pins of GPIO bank
+		 *
+		 * \param   gpio    number of the pin
+		 */
+		virtual void debouncing_time(int gpio, unsigned int us) = 0;
+
+		/**
+		 * Configure the interrupt request on occurence of a falling edge on 
+		 * a specified input GPIO pin
+		 * 
+		 * \param   gpio    number of the pin
+		 */
+		virtual void falling_detect(int gpio, bool enable) = 0;
+
+		/**
+		 * Configure the interrupt request on occurence of a rising edge on 
+		 * a specified input GPIO pin
+		 * 
+		 * \param   gpio    number of the pin
+		 */
+		virtual void rising_detect(int gpio, bool enable) = 0;
+
+		/**
+		 * Enable or disable the interrupt on a specified GPIO pin
+		 * 
+		 * \param   gpio    number of the pin
+		 * \param   enable  interrupt status( true - enable, false - disable)
+		 */
+		virtual void irq_enable(int gpio, bool enable) = 0;
+
+		/**
+		 * Register signal handler to be notified on interrupt on a specified 
+		 * GPIO pin
+		 * 
+		 * \param   cap     capability of signal-context to handle GPIO 
+		 *                  interrupt
+		 * \param   gpio    number of the pin
+		 * 
+		 * This function is used for a set up signal handler for a specified 
+		 * GPIO interrupt. Signal emited to the client if IRQ on pin configured   
+		 * when the driver handles this IRQ.
+		 */
+		virtual void irq_sigh(Signal_context_capability cap, int gpio) = 0;
+
+		/*******************
+		 ** RPC interface **
+		 *******************/
+
+		GENODE_RPC(Rpc_direction_output, void, direction_output, int, bool);
+		GENODE_RPC(Rpc_direction_input, void, direction_input, int);
+		GENODE_RPC(Rpc_dataout, void, dataout, int, bool);
+		GENODE_RPC(Rpc_datain, int,  datain, int);
+		GENODE_RPC(Rpc_debounce_enable, void, debounce_enable, int, bool);
+		GENODE_RPC(Rpc_debouncing_time, void, debouncing_time, int, unsigned int);
+		GENODE_RPC(Rpc_falling_detect, void, falling_detect, int, bool);
+		GENODE_RPC(Rpc_rising_detect, void, rising_detect, int, bool);
+		GENODE_RPC(Rpc_irq_enable, void, irq_enable, int, bool);
+		GENODE_RPC(Rpc_irq_sigh, void, irq_sigh, Signal_context_capability, int);
+
+
+		typedef Meta::Type_tuple<Rpc_direction_output,
+				Meta::Type_tuple<Rpc_direction_input,
+				Meta::Type_tuple<Rpc_dataout,
+				Meta::Type_tuple<Rpc_datain,
+				Meta::Type_tuple<Rpc_debounce_enable,
+				Meta::Type_tuple<Rpc_debouncing_time,
+				Meta::Type_tuple<Rpc_falling_detect,
+				Meta::Type_tuple<Rpc_rising_detect,
+				Meta::Type_tuple<Rpc_irq_enable,
+				Meta::Type_tuple<Rpc_irq_sigh,
+								Meta::Empty>
+				> > > > > > > > > Rpc_functions;
+	};
+}
+
+#endif /* _INCLUDE__GPIO_SESSION__GPIO_SESSION_H_ */

os/run/gpio_drv.run

@@ -0,0 +1,74 @@
+#
+# Build
+#
+if {[have_spec omap4] == 0} {
+	puts "Runs on OMAP4 only"
+	exit 0
+}
+
+set build_components {
+	core init
+	drivers/timer drivers/gpio
+	test/gpio_drv
+}
+
+build $build_components
+
+create_boot_directory
+
+#
+# Generate config
+#
+
+append config {
+<config>
+	<parent-provides>
+		<service name="ROM"/>
+		<service name="RAM"/>
+		<service name="IRQ"/>
+		<service name="IO_MEM"/>
+		<service name="IO_PORT"/>
+		<service name="CAP"/>
+		<service name="PD"/>
+		<service name="RM"/>
+		<service name="CPU"/>
+		<service name="LOG"/>
+		<service name="SIGNAL"/>
+	</parent-provides>
+	<default-route>
+		<any-service> <parent/> <any-child/> </any-service>
+	</default-route>
+	<start name="timer">
+		<resource name="RAM" quantum="1M"/>
+		<provides><service name="Timer"/></provides>
+	</start>
+	<start name="omap4_gpio_drv">
+		<resource name="RAM" quantum="1M"/>
+		<provides><service name="Gpio"/></provides>
+		<config>
+			<gpio num="121" mode="I"/>
+			<gpio num="7" mode="O" value="0"/>
+			<gpio num="8" mode="O" value="0"/>
+		</config>
+	</start>
+	<start name="omap4_gpio_drv">
+		<resource name="RAM" quantum="1M"/>
+	</start>
+</config>}
+
+install_config $config
+
+#
+# Boot modules
+#
+
+# generic modules
+set boot_modules {
+	core init
+	timer
+	omap4_gpio_drv
+	test-omap4_gpio_drv
+}
+
+build_boot_image $boot_modules
+