151 lines
3.3 KiB
C++
151 lines
3.3 KiB
C++
/*
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* \brief Frame-buffer driver for the OMAP4430 display-subsystem (HDMI)
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* \author Norman Feske
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* \date 2012-06-21
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*/
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/*
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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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/* Genode includes */
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#include <framebuffer_session/framebuffer_session.h>
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#include <cap_session/connection.h>
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#include <dataspace/client.h>
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#include <base/printf.h>
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#include <base/sleep.h>
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#include <root/component.h>
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/* local includes */
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#include <driver.h>
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/**
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* Root interface that hands out a statically created session
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*/
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template <typename SESSION_TYPE>
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class Static_root : public Genode::Rpc_object<Genode::Typed_root<SESSION_TYPE> >
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{
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private:
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typedef Genode::Capability<SESSION_TYPE> Session_capability;
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Session_capability _session;
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public:
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/**
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* Constructor
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*
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* \param session session to be provided to the client
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*/
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Static_root(Session_capability session) : _session(session) { }
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/********************
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** Root interface **
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********************/
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Genode::Session_capability session(Genode::Root::Session_args const &args) { return _session; }
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void upgrade(Genode::Session_capability, Genode::Root::Upgrade_args const &) { }
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void close(Genode::Session_capability) { }
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};
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namespace Framebuffer {
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using namespace Genode;
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class Session_component;
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};
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class Framebuffer::Session_component : public Genode::Rpc_object<Framebuffer::Session>
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{
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private:
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Driver::Mode _mode;
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Driver::Format _format;
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size_t _size;
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Dataspace_capability _ds;
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addr_t _phys_base;
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/**
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* Convert Driver::Format to Framebuffer::Mode::Format
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*/
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static Mode::Format _convert_format(Driver::Format driver_format)
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{
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switch (driver_format) {
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case Driver::FORMAT_RGB565: return Mode::RGB565;
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}
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return Mode::INVALID;
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}
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public:
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Session_component(Driver &driver)
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:
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_mode(Driver::MODE_1024_768),
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_format(Driver::FORMAT_RGB565),
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_size(Driver::buffer_size(_mode, _format)),
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_ds(env()->ram_session()->alloc(_size, false)),
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_phys_base(Dataspace_client(_ds).phys_addr())
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{
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if (!driver.init(_mode, _format, _phys_base)) {
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PERR("Could not initialize display");
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struct Could_not_initialize_display : Exception { };
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throw Could_not_initialize_display();
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}
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}
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/************************************
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** Framebuffer::Session interface **
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************************************/
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Dataspace_capability dataspace() { return _ds; }
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void release() { }
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Mode mode() const
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{
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return Mode(Driver::width(_mode),
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Driver::height(_mode),
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_convert_format(_format));
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}
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void mode_sigh(Genode::Signal_context_capability) { }
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void refresh(int, int, int, int) { }
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};
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int main(int, char **)
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{
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using namespace Framebuffer;
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static Driver driver;
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/*
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* Initialize server entry point
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*/
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enum { STACK_SIZE = 4096 };
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static Cap_connection cap;
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static Rpc_entrypoint ep(&cap, STACK_SIZE, "fb_ep");
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/*
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* Let the entry point serve the framebuffer session and root interfaces
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*/
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static Session_component fb_session(driver);
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static Static_root<Framebuffer::Session> fb_root(ep.manage(&fb_session));
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/*
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* Announce service
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*/
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env()->parent()->announce(ep.manage(&fb_root));
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sleep_forever();
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return 0;
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}
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