138 lines
3.1 KiB
C++
138 lines
3.1 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) 2012-2013 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 <os/config.h>
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#include <os/static_root.h>
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/* local includes */
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#include <driver.h>
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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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size_t _width;
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size_t _height;
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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, size_t width, size_t height,
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Driver::Output output)
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:
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_width(width),
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_height(height),
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_format(Driver::FORMAT_RGB565),
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_size(driver.buffer_size(width, height, _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(width, height, _format, output, _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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Mode mode() const
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{
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return Mode(_width,
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_height,
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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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size_t width = 1024;
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size_t height = 768;
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Driver::Output output = Driver::OUTPUT_HDMI;
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try {
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char out[5] = {};
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Genode::Xml_node config_node = Genode::config()->xml_node();
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config_node.attribute("width").value(&width);
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config_node.attribute("height").value(&height);
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config_node.attribute("output").value(out, sizeof(out));
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if (!Genode::strcmp(out, "LCD")) {
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output = Driver::OUTPUT_LCD;
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}
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}
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catch (...) {
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PDBG("using default configuration: HDMI@%dx%d", width, height);
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}
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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, width, height, output);
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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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