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diff --git a/sys/mips/rmi/xlr_i2c.c b/sys/mips/rmi/xlr_i2c.c
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+/*-
+ * Copyright (c) 2003-2009 RMI Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of RMI Corporation, nor the names of its contributors,
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * RMI_BSD */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/sys/mips/xlr/xlr_i2c.c,v 1.20.8.1 2008/08/25 23:17:51 cognet Exp $");
+
+/*
+ * I2C driver for the Palm-BK3220 I2C Host adapter on the RMI XLR.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+
+
+#include <dev/iicbus/iiconf.h>
+#include <dev/iicbus/iicbus.h>
+
+#include <mips/rmi/iomap.h>
+#include <mips/include/resource.h>
+
+#include "iicbus_if.h"
+
+#define DEVTOIICBUS(dev) ((struct iicbus_device*)device_get_ivars(dev))
+
+#define I2C_PALM_CFG 0x00
+#define I2C_PALM_CLKDIV 0x01
+#define I2C_PALM_DEVADDR 0x02
+#define I2C_PALM_ADDR 0x03
+#define I2C_PALM_DATAOUT 0x04
+#define I2C_PALM_DATAIN 0x05
+#define I2C_PALM_STATUS 0x06
+#define I2C_PALM_STARTXFR 0x07
+#define I2C_PALM_BYTECNT 0x08
+#define I2C_PALM_HDSTATIM 0x09
+
+/* TEST Values!! Change as required */
+#define I2C_PALM_CFG_DEF 0x000000F8 /* 8-Bit Addr + POR Values */
+#define I2C_PALM_CLKDIV_DEF 0x14A //0x00000052
+#define I2C_PALM_HDSTATIM_DEF 0x107 //0x00000000
+
+#define I2C_PALM_STARTXFR_RD 0x00000001
+#define I2C_PALM_STARTXFR_WR 0x00000000
+
+
+#define PHOENIX_IO_I2C_0_OFFSET 0x16000
+#define PHOENIX_IO_I2C_1_OFFSET 0x17000
+
+#define ARIZONA_I2c_BUS 1
+
+int bus = 1;
+
+
+uint8_t current_slave;
+uint8_t read_address;
+static xlr_reg_t *iobase_i2c_regs;
+
+static devclass_t xlr_i2c_devclass;
+
+/*
+ * Device methods
+ */
+static int xlr_i2c_probe(device_t);
+static int xlr_i2c_attach(device_t);
+static int xlr_i2c_detach(device_t);
+
+static int xlr_i2c_start(device_t dev, u_char slave, int timeout);
+static int xlr_i2c_stop(device_t dev);
+static int xlr_i2c_read(device_t dev, char *buf, int len, int *read, int last, int delay);
+static int xlr_i2c_write(device_t dev, char *buf, int len, int *sent, int timeout);
+
+
+struct xlr_i2c_softc {
+ device_t dev; /* Myself */
+ struct resource *mem_res; /* Memory resource */
+ volatile int flags;
+#define RXRDY 4
+#define TXRDY 0x10
+ int sc_started;
+ int twi_addr;
+ device_t iicbus;
+};
+
+
+#define MDELAY(a){ \
+ unsigned long local_loop = 0xfffff; \
+ while(local_loop--); \
+}\
+
+static void
+get_i2c_base(void)
+{
+ if (bus == 0)
+ iobase_i2c_regs = xlr_io_mmio(PHOENIX_IO_I2C_0_OFFSET);
+ else
+ iobase_i2c_regs = xlr_io_mmio(PHOENIX_IO_I2C_1_OFFSET);
+ return;
+}
+
+static void
+palm_write(int reg, int value)
+{
+ get_i2c_base();
+ xlr_write_reg(iobase_i2c_regs, reg, value);
+ return;
+}
+
+
+static int
+palm_read(int reg)
+{
+ uint32_t val;
+
+ get_i2c_base();
+ val = xlr_read_reg(iobase_i2c_regs, reg);
+ return ((int)val);
+}
+
+static int
+palm_addr_only(uint8_t addr, uint8_t offset)
+{
+ volatile uint32_t regVal = 0x00;
+
+ palm_write(I2C_PALM_ADDR, offset);
+ palm_write(I2C_PALM_DEVADDR, addr);
+ palm_write(I2C_PALM_CFG, 0xfa);
+ palm_write(I2C_PALM_STARTXFR, 0x02);
+ regVal = palm_read(I2C_PALM_STATUS);
+ if (regVal & 0x0008) {
+ printf("palm_addr_only: ACKERR. Aborting...\n");
+ return -1;
+ }
+ return 0;
+}
+
+
+static int
+palm_rx(uint8_t addr, uint8_t offset, uint8_t len,
+ uint8_t * buf)
+{
+ volatile uint32_t regVal = 0x00, ctr = 0x00;
+ int timeOut, numBytes = 0x00;
+
+ palm_write(I2C_PALM_CFG, 0xfa);
+ palm_write(I2C_PALM_BYTECNT, len);
+ palm_write(I2C_PALM_DEVADDR, addr);
+ //DEVADDR = 0x4c, 0x68
+ MDELAY(1);
+
+ for (numBytes = 0x00; numBytes < len; numBytes++) {
+ palm_write(I2C_PALM_ADDR, offset + numBytes);
+//I2C_PALM_ADDR:offset
+ MDELAY(1);
+ if (!ctr) {
+ /* Trigger a READ Transaction */
+ palm_write(I2C_PALM_STARTXFR, I2C_PALM_STARTXFR_RD);
+ ctr++;
+ }
+ /* Error Conditions [Begin] */
+ regVal = palm_read(I2C_PALM_STATUS);
+ MDELAY(1);
+ if (regVal & 0x0008) {
+ printf("palm_rx: ACKERR. Aborting...\n");
+ return -1;
+ }
+ timeOut = 10;
+ while ((regVal & 0x0030) && timeOut--) {
+ palm_write(I2C_PALM_STARTXFR, I2C_PALM_STARTXFR_RD);
+ regVal = palm_read(I2C_PALM_STATUS);
+ }
+ if (timeOut == 0x00) {
+ printf("palm_rx: TimedOut on Valid STARTXFR/Arbitration\n");
+ return -1;
+ }
+ timeOut = 10;
+ /* Do we have valid data from the device yet..? */
+ regVal &= 0x0004;
+ while (!regVal && timeOut--) {
+ regVal = palm_read(I2C_PALM_STATUS) & 0x0004;
+ }
+ if (timeOut == 0x00) {
+ printf("palm_rx: TimedOut Waiting for Valid Data\n");
+ return -1;
+ }
+ /* Error Conditions [End] */
+ /* Read the data */
+ buf[numBytes] = (uint8_t) palm_read(I2C_PALM_DATAIN);
+ }
+ return 0;
+}
+
+
+
+static int
+wait_for_idle(void)
+{
+ int timeOut = 0x1000;
+ volatile uint32_t regVal = 0x00;
+
+ regVal = palm_read(I2C_PALM_STATUS) & 0x0001;
+ while (regVal && timeOut--) {
+ regVal = palm_read(I2C_PALM_STATUS) & 0x0001;
+ }
+ if (timeOut == 0x00)
+ return -1; /* Timed Out */
+ else
+ return 0;
+}
+
+
+static int
+palm_tx(uint8_t addr, uint8_t offset, uint8_t * buf, uint8_t len)
+{
+ volatile uint32_t regVal = 0x00;
+ int timeOut, ctr = 0x00, numBytes = len;
+
+ for (ctr = 0x00; ctr < len; ctr++) {
+ if (wait_for_idle() < 0) {
+ printf("TimedOut on Waiting for I2C Bus Idle.\n");
+ return -EIO;
+ }
+ palm_write(I2C_PALM_CFG, 0xF8);
+ palm_write(I2C_PALM_BYTECNT, 0x00);
+ palm_write(I2C_PALM_DEVADDR, addr);
+ //0x4c, 0x68
+ palm_write(I2C_PALM_ADDR, offset + numBytes - 1);
+ //offset
+ palm_write(I2C_PALM_DATAOUT, buf[ctr]);
+ palm_write(I2C_PALM_STARTXFR, I2C_PALM_STARTXFR_WR);
+ MDELAY(1);
+
+ regVal = palm_read(I2C_PALM_STATUS);
+ MDELAY(1);
+ if (regVal & 0x0008) {
+ printf("palm_tx: ACKERR. Aborting...\n");
+ return -1;
+ }
+ timeOut = 0x1000;
+ while (!(regVal & 0x0002) && timeOut) {
+ regVal = palm_read(I2C_PALM_STATUS);
+ timeOut--;
+ }
+ if (timeOut == 0x00) {
+ printf("palm_tx: [TimeOut] SDOEMPTY Not Set\n");
+ return -1;
+ }
+ timeOut = 1000;
+ while ((regVal & 0x0030) && timeOut) {
+ palm_write(I2C_PALM_STARTXFR, I2C_PALM_STARTXFR_WR);
+ regVal = palm_read(I2C_PALM_STATUS);
+ timeOut--;
+ }
+ if (timeOut == 0x00) {
+ printf("palm_rx: TimedOut on Valid STARTXFR/Arbitration\n");
+ return -1;
+ }
+ numBytes--;
+ }
+ return 0;
+}
+
+
+
+
+
+static int
+xlr_i2c_probe(device_t dev)
+{
+ device_set_desc(dev, "I2C bus controller");
+
+ return (0);
+}
+
+
+/*
+ * We add all the devices which we know about.
+ * The generic attach routine will attach them if they are alive.
+ */
+static int
+xlr_i2c_attach(device_t dev)
+{
+ struct xlr_i2c_softc *sc;
+ int rid;
+
+ sc = device_get_softc(dev);
+ sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (sc->mem_res == NULL) {
+ printf("not able to allocate the bus resource\n");
+ }
+ if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
+ printf("could not allocate iicbus instance\n");
+
+ bus_generic_attach(dev);
+
+ return (0);
+}
+
+static int
+xlr_i2c_detach(device_t dev)
+{
+ bus_generic_detach(dev);
+
+ return (0);
+}
+
+/*
+static int
+xlr_i2c_add_child(device_t dev, int order, const char *name, int unit)
+{
+ printf("********* %s ******** \n", __FUNCTION__);
+ device_add_child_ordered(dev, order, name, unit);
+
+ bus_generic_attach(dev);
+
+ return (0);
+}
+*/
+
+static int
+xlr_i2c_start(device_t dev, u_char slave, int timeout)
+{
+ int error = 0;
+ struct xlr_i2c_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->sc_started = 1;
+
+ current_slave = (slave >> 1);
+ return error;
+
+}
+
+static int
+xlr_i2c_stop(device_t dev)
+{
+ int error = 0;
+
+ return error;
+
+}
+
+static int
+xlr_i2c_read(device_t dev, char *buf, int len, int *read, int last,
+ int delay)
+{
+ int error = 0;
+
+ if (palm_addr_only(current_slave, read_address) == -1) {
+ printf("I2C ADDRONLY Phase Fail.\n");
+ return -1;
+ }
+ if (palm_rx(current_slave, read_address, len, buf) == -1) {
+ printf("I2C Read Fail.\n");
+ return -1;
+ }
+ *read = len;
+ return error;
+
+}
+
+
+static int
+xlr_i2c_write(device_t dev, char *buf, int len, int *sent, int timeout /* us */ )
+{
+
+ int error = 0;
+ uint8_t write_address;
+
+ if (len == 1) {
+ /* address for the next read */
+ read_address = buf[0];
+ return error;
+ }
+ if (len < 2)
+ return (-1);
+
+ write_address = buf[0];
+
+ /*
+ * for write operation, buf[0] contains the register offset and
+ * buf[1] onwards contains the value
+ */
+ palm_tx(current_slave, write_address, &buf[1], len - 1);
+
+ return error;
+
+}
+
+static int
+xlr_i2c_callback(device_t dev, int index, caddr_t *data)
+{
+ return 0;
+}
+
+static int
+xlr_i2c_repeated_start(device_t dev, u_char slave, int timeout)
+{
+ return 0;
+}
+
+
+static device_method_t xlr_i2c_methods[] = {
+ /* device interface */
+ DEVMETHOD(device_probe, xlr_i2c_probe),
+ DEVMETHOD(device_attach, xlr_i2c_attach),
+ DEVMETHOD(device_detach, xlr_i2c_detach),
+
+ /* iicbus interface */
+ DEVMETHOD(iicbus_callback, xlr_i2c_callback),
+ DEVMETHOD(iicbus_repeated_start, xlr_i2c_repeated_start),
+ DEVMETHOD(iicbus_start, xlr_i2c_start),
+ DEVMETHOD(iicbus_stop, xlr_i2c_stop),
+ DEVMETHOD(iicbus_write, xlr_i2c_write),
+ DEVMETHOD(iicbus_read, xlr_i2c_read),
+ {0, 0}
+};
+
+static driver_t xlr_i2c_driver = {
+ "xlr_i2c",
+ xlr_i2c_methods,
+ sizeof(struct xlr_i2c_softc),
+};
+
+DRIVER_MODULE(xlr_i2c, iodi, xlr_i2c_driver, xlr_i2c_devclass, 0, 0);
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