CommonRegs.java example

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/*
 * $Id$
 *
 * Copyright (C) 2003-2015 JNode.org
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; If not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package org.jnode.driver.video.ati.radeon;

/**
 * @author Ewout Prangsma (epr@users.sourceforge.net)
 */
final class CommonRegs implements RadeonConstants {

    private int ovr_clr;

    private int ovr_wid_left_right;

    private int ovr_wid_top_bottom;

    private int ov0_scale_cntl;

    private int subpic_cntl;

    private int viph_control;

    private int i2c_cntl_1;

    private int gen_int_cntl;

    private int cap0_trig_cntl;

    private int cap1_trig_cntl;

    private int bus_cntl;

    private int surface_cntl;

    /**
     * Initialize from a given IO.
     */
    public void saveFromVGA(RadeonVgaIO io) {
        this.ovr_clr = io.getReg32(OVR_CLR);
        this.ovr_wid_left_right = io.getReg32(OVR_WID_LEFT_RIGHT);
        this.ovr_wid_top_bottom = io.getReg32(OVR_WID_TOP_BOTTOM);
        this.ov0_scale_cntl = io.getReg32(OV0_SCALE_CNTL);
        this.subpic_cntl = io.getReg32(SUBPIC_CNTL);
        this.viph_control = io.getReg32(VIPH_CONTROL);
        this.i2c_cntl_1 = io.getReg32(I2C_CNTL_1);
        this.gen_int_cntl = io.getReg32(GEN_INT_CNTL);
        this.cap0_trig_cntl = io.getReg32(CAP0_TRIG_CNTL);
        this.cap1_trig_cntl = io.getReg32(CAP1_TRIG_CNTL);
        this.bus_cntl = io.getReg32(BUS_CNTL);
        this.surface_cntl = io.getReg32(SURFACE_CNTL);
    }

    /**
     * Save this state to VGA.
     */
    public final void restoreToVGA(RadeonVgaIO io) {
        io.setReg32(OVR_CLR, this.ovr_clr);
        io.setReg32(OVR_WID_LEFT_RIGHT, this.ovr_wid_left_right);
        io.setReg32(OVR_WID_TOP_BOTTOM, this.ovr_wid_top_bottom);
        io.setReg32(OV0_SCALE_CNTL, this.ov0_scale_cntl);
        io.setReg32(SUBPIC_CNTL, this.subpic_cntl);
        io.setReg32(VIPH_CONTROL, this.viph_control);
        io.setReg32(I2C_CNTL_1, this.i2c_cntl_1);
        io.setReg32(GEN_INT_CNTL, this.gen_int_cntl);
        io.setReg32(CAP0_TRIG_CNTL, this.cap0_trig_cntl);
        io.setReg32(CAP1_TRIG_CNTL, this.cap1_trig_cntl);
        io.setReg32(BUS_CNTL, this.bus_cntl);
        io.setReg32(SURFACE_CNTL, this.surface_cntl);
    }

    /**
     * Set this state up for a given configuration;
     * 
     * @param config
     * @param io
     */
    final void calcForConfiguration() {
        this.ovr_clr = 0;
        this.ovr_wid_left_right = 0;
        this.ovr_wid_top_bottom = 0;
        this.ov0_scale_cntl = 0;
        this.subpic_cntl = 0;
        this.i2c_cntl_1 = 0;
        this.surface_cntl = SURF_TRANSLATION_DIS;
    }

}