com.diozero.internal.board.tinkerboard.TinkerBoardMmapGpio Maven / Gradle / Ivy
package com.diozero.internal.board.tinkerboard;
/*
* #%L
* Organisation: diozero
* Project: Device I/O Zero - Core
* Filename: TinkerBoardMmapGpio.java
*
* This file is part of the diozero project. More information about this project
* can be found at http://www.diozero.com/
* %%
* Copyright (C) 2016 - 2020 diozero
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
import java.nio.ByteOrder;
import java.nio.IntBuffer;
import org.tinylog.Logger;
import com.diozero.api.DeviceMode;
import com.diozero.api.GpioPullUpDown;
import com.diozero.internal.board.chip.ChipMmapGpio;
import com.diozero.internal.provider.MmapGpioInterface;
import com.diozero.util.LibraryLoader;
import com.diozero.util.MmapBufferNative;
import com.diozero.util.MmapByteBuffer;
import com.diozero.util.SleepUtil;
/*
* https://github.com/torvalds/linux/blob/master/arch/arm/boot/dts/rk3288.dtsi
* https://chromium.googlesource.com/chromiumos/third_party/coreboot/+/chromeos-2013.04/src/soc/rockchip/rk3288/gpio.c
*/
public class TinkerBoardMmapGpio implements MmapGpioInterface {
private static final String MEM_DEVICE = "/dev/mem";
private static final int PMU_BASE = 0xff730000;
private static final int GPIO_BASE = 0xff750000;
private static final int GRF_BASE = 0xff770000;
private static final int GPIO_LENGTH = 0x00010000;
private static final int GPIO_CHANNEL = 0x00020000;
private static final int PAGE_SIZE = 4 * 0x400;
private static final int UNKNOWN = -1;
private static final int PMU_GPIO0C_IOMUX_INT_OFFSET = 0x008c / 4;
private static final int GRF_GPIO5B_IOMUX_INT_OFFSET = 0x0050 / 4;
private static final int GRF_GPIO5C_IOMUX_INT_OFFSET = 0x0054 / 4;
private static final int GRF_GPIO6A_IOMUX_INT_OFFSET = 0x005c / 4;
//private static final int GRF_GPIO6B_IOMUX_INT_OFFSET = 0x0060 / 4;
//private static final int GRF_GPIO6C_IOMUX_INT_OFFSET = 0x0064 / 4;
private static final int GRF_GPIO7A_IOMUX_INT_OFFSET = 0x006c / 4;
private static final int GRF_GPIO7B_IOMUX_INT_OFFSET = 0x0070 / 4;
private static final int GRF_GPIO7CL_IOMUX_INT_OFFSET = 0x0074 / 4;
private static final int GRF_GPIO7CH_IOMUX_INT_OFFSET = 0x0078 / 4;
private static final int GRF_GPIO8A_IOMUX_INT_OFFSET = 0x0080 / 4;
private static final int GRF_GPIO8B_IOMUX_INT_OFFSET = 0x0084 / 4;
private static final int PMU_GPIO0C_P_INT_OFFSET = 0x006c / 4;
private static final int GRF_GPIO5B_P_INT_OFFSET = 0x0184 / 4;
private static final int GRF_GPIO5C_P_INT_OFFSET = 0x0188 / 4;
private static final int GRF_GPIO6A_P_INT_OFFSET = 0x0190 / 4;
//private static final int GRF_GPIO6B_P_INT_OFFSET = 0x0194 / 4;
//private static final int GRF_GPIO6C_P_INT_OFFSET = 0x0198 / 4;
private static final int GRF_GPIO7A_P_INT_OFFSET = 0x01a0 / 4;
private static final int GRF_GPIO7B_P_INT_OFFSET = 0x01a4 / 4;
private static final int GRF_GPIO7C_P_INT_OFFSET = 0x01a8 / 4;
private static final int GRF_GPIO8A_P_INT_OFFSET = 0x01b0 / 4;
private static final int GRF_GPIO8B_P_INT_OFFSET = 0x01b4 / 4;
private static final int GPIO_SWPORTA_DR_INT_OFFSET = 0x0000 / 4;
private static final int GPIO_SWPORTA_DDR_INT_OFFSET = 0x0004 / 4;
private static final int GPIO_EXT_PORTA_INT_OFFSET = 0x0050 / 4;
private static final int MUX_FUNC_GPIO = 0;
private static final int MUX_FUNC_PWM = 3;
private GpioBank[] gpioBanks;
private MmapByteBuffer pmuMmap;
private IntBuffer pmuIntBuffer;
private MmapByteBuffer grfMmap;
private IntBuffer grfIntBuffer;
@Override
public synchronized void initialise() {
if (gpioBanks == null) {
gpioBanks = new GpioBank[9];
for (int i=0; i0 ? GPIO_CHANNEL : 0));
}
pmuMmap = MmapBufferNative.createMmapBuffer(MEM_DEVICE, PMU_BASE, PAGE_SIZE);
pmuIntBuffer = pmuMmap.getBuffer().order(ByteOrder.LITTLE_ENDIAN).asIntBuffer();
grfMmap = MmapBufferNative.createMmapBuffer(MEM_DEVICE, GRF_BASE, PAGE_SIZE);
grfIntBuffer = grfMmap.getBuffer().order(ByteOrder.LITTLE_ENDIAN).asIntBuffer();
}
}
@Override
public synchronized void close() {
if (gpioBanks != null) {
for (int i=0; i> (((gpio-4)%8)*4)) & mux_mask;
} else {
mux_func = (config_val >> ((gpio%8)*2)) & mux_mask;
}
DeviceMode mode;
if (mux_func == MUX_FUNC_GPIO) {
int bank;
int shift;
if (gpio < 24) {
bank = gpio / 32;
shift = gpio % 32;
} else {
bank = (gpio + 8) / 32;
shift = (gpio + 8) % 32;
}
if ((gpioBanks[bank].gpioIntBuffer.get(GPIO_SWPORTA_DDR_INT_OFFSET) & 1<