0950b2f340
* Simplify IPU register definitions using templates * Distinguish between i.MX53 QSB and SMD board in driver * Support IPU specific overlay mechanism by framebuffer session extension
134 lines
2.6 KiB
C++
134 lines
2.6 KiB
C++
/*
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* \brief Driver for i.MX53 specific platform devices (clocks, power, etc.)
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* \author Stefan Kalkowski <stefan.kalkowski@genode-labs.com>
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* \date 2013-04-29
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*/
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/*
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* Copyright (C) 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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#include <base/printf.h>
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#include <base/sleep.h>
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#include <base/rpc_server.h>
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#include <cap_session/connection.h>
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#include <root/component.h>
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#include <platform_session/platform_session.h>
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#include <ccm.h>
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#include <iim.h>
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#include <iomux.h>
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#include <src.h>
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namespace Platform {
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class Session_component;
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class Root;
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}
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class Platform::Session_component : public Genode::Rpc_object<Platform::Session>
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{
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private:
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Iim &_iim; /* IC identification module */
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Iomux &_iomux; /* I/O multiplexer device */
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Ccm &_ccm; /* clock control module */
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Src &_src; /* system reset controller */
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public:
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/**
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* Constructor
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*/
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Session_component(Iim &iim, Iomux &iomux, Ccm &ccm, Src &src)
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: _iim(iim), _iomux(iomux), _ccm(ccm), _src(src) {}
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/**********************************
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** Platform session interface **
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**********************************/
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void enable(Device dev)
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{
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switch (dev) {
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case Session::IPU:
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_src.reset_ipu();
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_ccm.ipu_clk_enable();
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_iomux.enable_di1();
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break;
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default:
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PWRN("Invalid device");
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};
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}
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void disable(Device dev)
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{
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switch (dev) {
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case Session::IPU:
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_ccm.ipu_clk_disable();
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break;
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default:
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PWRN("Invalid device");
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};
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}
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void clock_rate(Device dev, unsigned long rate)
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{
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switch (dev) {
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default:
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PWRN("Invalid device");
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};
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}
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Board_revision revision()
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{
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switch (_iim.revision()) {
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case QSB: return QSB;
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case SMD: return SMD;
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};
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return UNKNOWN;
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}
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};
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class Platform::Root : public Genode::Root_component<Platform::Session_component>
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{
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private:
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Iim _iim;
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Iomux _iomux;
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Ccm _ccm;
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Src _src;
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protected:
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Session_component *_create_session(const char *args) {
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return new (md_alloc()) Session_component(_iim, _iomux, _ccm, _src); }
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public:
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Root(Genode::Rpc_entrypoint *session_ep,
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Genode::Allocator *md_alloc)
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: Genode::Root_component<Session_component>(session_ep, md_alloc) { }
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};
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int main(int, char **)
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{
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using namespace Genode;
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PINF("--- i.MX53 platform driver ---\n");
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static Cap_connection cap;
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static Rpc_entrypoint ep(&cap, 4096, "imx53_plat_ep");
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static Platform::Root plat_root(&ep, env()->heap());
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env()->parent()->announce(ep.manage(&plat_root));
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sleep_forever();
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return 0;
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}
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