Added missing tegra files.HEADmaster

1 files changed, 881 insertions, 0 deletions

diff --git a/drivers/misc/inv_mpu/accel/lsm303dlx_a.c b/drivers/misc/inv_mpu/accel/lsm303dlx_a.c
new file mode 100644
index 00000000000..576282a0fb1
--- /dev/null
+++ b/drivers/misc/inv_mpu/accel/lsm303dlx_a.c
@@ -0,0 +1,881 @@
+/*
+        $License:
+        Copyright (C) 2011 InvenSense Corporation, All Rights Reserved.
+
+        This program is free software; you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation; either version 2 of the License, or
+        (at your option) any later version.
+
+        This program 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 General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <http://www.gnu.org/licenses/>.
+        $
+ */
+
+/**
+ *  @addtogroup ACCELDL
+ *  @brief      Provides the interface to setup and handle an accelerometer.
+ *
+ *  @{
+ *      @file   lsm303dlx_a.c
+ *      @brief  Accelerometer setup and handling methods for ST LSM303DLH
+ *              or LSM303DLM accel.
+ */
+
+/* -------------------------------------------------------------------------- */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include "mpu-dev.h"
+
+#include <log.h>
+#include <linux/mpu.h>
+#include "mlsl.h"
+#include "mldl_cfg.h"
+#undef MPL_LOG_TAG
+#define MPL_LOG_TAG "MPL-acc"
+
+/* -------------------------------------------------------------------------- */
+
+/* full scale setting - register & mask */
+#define LSM303DLx_CTRL_REG1         (0x20)
+#define LSM303DLx_CTRL_REG2         (0x21)
+#define LSM303DLx_CTRL_REG3         (0x22)
+#define LSM303DLx_CTRL_REG4         (0x23)
+#define LSM303DLx_CTRL_REG5         (0x24)
+#define LSM303DLx_HP_FILTER_RESET   (0x25)
+#define LSM303DLx_REFERENCE         (0x26)
+#define LSM303DLx_STATUS_REG        (0x27)
+#define LSM303DLx_OUT_X_L           (0x28)
+#define LSM303DLx_OUT_X_H           (0x29)
+#define LSM303DLx_OUT_Y_L           (0x2a)
+#define LSM303DLx_OUT_Y_H           (0x2b)
+#define LSM303DLx_OUT_Z_L           (0x2b)
+#define LSM303DLx_OUT_Z_H           (0x2d)
+
+#define LSM303DLx_INT1_CFG          (0x30)
+#define LSM303DLx_INT1_SRC          (0x31)
+#define LSM303DLx_INT1_THS          (0x32)
+#define LSM303DLx_INT1_DURATION     (0x33)
+
+#define LSM303DLx_INT2_CFG          (0x34)
+#define LSM303DLx_INT2_SRC          (0x35)
+#define LSM303DLx_INT2_THS          (0x36)
+#define LSM303DLx_INT2_DURATION     (0x37)
+
+#define LSM303DLx_CTRL_MASK         (0x30)
+#define LSM303DLx_SLEEP_MASK        (0x20)
+#define LSM303DLx_PWR_MODE_NORMAL   (0x20)
+
+#define LSM303DLx_MAX_DUR           (0x7F)
+
+/* -------------------------------------------------------------------------- */
+
+struct lsm303dlx_a_config {
+        unsigned int odr;
+        unsigned int fsr; /** < full scale range mg */
+        unsigned int ths; /** < Motion no-motion thseshold mg */
+        unsigned int dur; /** < Motion no-motion duration ms */
+        unsigned char reg_ths;
+        unsigned char reg_dur;
+        unsigned char ctrl_reg1;
+        unsigned char irq_type;
+        unsigned char mot_int1_cfg;
+};
+
+struct lsm303dlx_a_private_data {
+        struct lsm303dlx_a_config suspend;
+        struct lsm303dlx_a_config resume;
+};
+
+/* -------------------------------------------------------------------------- */
+
+static int lsm303dlx_a_set_ths(void *mlsl_handle,
+                               struct ext_slave_platform_data *pdata,
+                               struct lsm303dlx_a_config *config,
+                               int apply,
+                               long ths)
+{
+        int result = INV_SUCCESS;
+        if ((unsigned int) ths >= config->fsr)
+                ths = (long) config->fsr - 1;
+
+        if (ths < 0)
+                ths = 0;
+
+        config->ths = ths;
+        config->reg_ths = (unsigned char)(long)((ths * 128L) / (config->fsr));
+        MPL_LOGV("THS: %d, 0x%02x\n", config->ths, (int)config->reg_ths);
+        if (apply)
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        LSM303DLx_INT1_THS,
+                                        config->reg_ths);
+        return result;
+}
+
+static int lsm303dlx_a_set_dur(void *mlsl_handle,
+                               struct ext_slave_platform_data *pdata,
+                               struct lsm303dlx_a_config *config,
+                               int apply,
+                               long dur)
+{
+        int result = INV_SUCCESS;
+        long reg_dur = (dur * config->odr) / 1000000L;
+        config->dur = dur;
+
+        if (reg_dur > LSM303DLx_MAX_DUR)
+                reg_dur = LSM303DLx_MAX_DUR;
+
+        config->reg_dur = (unsigned char) reg_dur;
+        MPL_LOGV("DUR: %d, 0x%02x\n", config->dur, (int)config->reg_dur);
+        if (apply)
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        LSM303DLx_INT1_DURATION,
+                                        (unsigned char)reg_dur);
+        return result;
+}
+
+/**
+ * Sets the IRQ to fire when one of the IRQ events occur.  Threshold and
+ * duration will not be used uless the type is MOT or NMOT.
+ *
+ * @param config configuration to apply to, suspend or resume
+ * @param irq_type The type of IRQ.  Valid values are
+ * - MPU_SLAVE_IRQ_TYPE_NONE
+ * - MPU_SLAVE_IRQ_TYPE_MOTION
+ * - MPU_SLAVE_IRQ_TYPE_DATA_READY
+ */
+static int lsm303dlx_a_set_irq(void *mlsl_handle,
+                               struct ext_slave_platform_data *pdata,
+                               struct lsm303dlx_a_config *config,
+                               int apply,
+                               long irq_type)
+{
+        int result = INV_SUCCESS;
+        unsigned char reg1;
+        unsigned char reg2;
+
+        config->irq_type = (unsigned char)irq_type;
+        if (irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) {
+                reg1 = 0x02;
+                reg2 = 0x00;
+        } else if (irq_type == MPU_SLAVE_IRQ_TYPE_MOTION) {
+                reg1 = 0x00;
+                reg2 = config->mot_int1_cfg;
+        } else {
+                reg1 = 0x00;
+                reg2 = 0x00;
+        }
+
+        if (apply) {
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        LSM303DLx_CTRL_REG3, reg1);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        LSM303DLx_INT1_CFG, reg2);
+        }
+
+        return result;
+}
+
+/**
+ *  @brief Set the output data rate for the particular configuration.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param config
+ *             Config to modify with new ODR.
+ *  @param apply
+ *             whether to apply immediately or save the settings to be applied
+ *             at the next resume.
+ *  @param odr
+ *             Output data rate in units of 1/1000Hz (mHz).
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_set_odr(void *mlsl_handle,
+                               struct ext_slave_platform_data *pdata,
+                               struct lsm303dlx_a_config *config,
+                               int apply,
+                               long odr)
+{
+        unsigned char bits;
+        int result = INV_SUCCESS;
+
+        /* normal power modes */
+        if (odr > 400000) {
+                config->odr = 1000000;
+                bits = LSM303DLx_PWR_MODE_NORMAL | 0x18;
+        } else if (odr > 100000) {
+                config->odr = 400000;
+                bits = LSM303DLx_PWR_MODE_NORMAL | 0x10;
+        } else if (odr > 50000) {
+                config->odr = 100000;
+                bits = LSM303DLx_PWR_MODE_NORMAL | 0x08;
+        } else if (odr > 10000) {
+                config->odr = 50000;
+                bits = LSM303DLx_PWR_MODE_NORMAL | 0x00;
+        /* low power modes */
+        } else if (odr > 5000) {
+                config->odr = 10000;
+                bits = 0xC0;
+        } else if (odr > 2000) {
+                config->odr = 5000;
+                bits = 0xA0;
+        } else if (odr > 1000) {
+                config->odr = 2000;
+                bits = 0x80;
+        } else if (odr > 500) {
+                config->odr = 1000;
+                bits = 0x60;
+        } else if (odr > 0) {
+                config->odr = 500;
+                bits = 0x40;
+        } else {
+                config->odr = 0;
+                bits = 0;
+        }
+
+        config->ctrl_reg1 = bits | (config->ctrl_reg1 & 0x7);
+        lsm303dlx_a_set_dur(mlsl_handle, pdata, config, apply, config->dur);
+        MPL_LOGV("ODR: %d, 0x%02x\n", config->odr, (int)config->ctrl_reg1);
+        if (apply)
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        LSM303DLx_CTRL_REG1,
+                                        config->ctrl_reg1);
+        return result;
+}
+
+/**
+ *  @brief Set the full scale range of the accels
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param config
+ *             pointer to configuration.
+ *  @param apply
+ *             whether to apply immediately or save the settings to be applied
+ *             at the next resume.
+ *  @param fsr
+ *             requested full scale range.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_set_fsr(void *mlsl_handle,
+                               struct ext_slave_platform_data *pdata,
+                               struct lsm303dlx_a_config *config,
+                               int apply,
+                               long fsr)
+{
+        unsigned char reg1 = 0x40;
+        int result = INV_SUCCESS;
+
+        if (fsr <= 2048) {
+                config->fsr = 2048;
+        } else if (fsr <= 4096) {
+                reg1 |= 0x30;
+                config->fsr = 4096;
+        } else {
+                reg1 |= 0x10;
+                config->fsr = 8192;
+        }
+
+        lsm303dlx_a_set_ths(mlsl_handle, pdata,
+                        config, apply, config->ths);
+        MPL_LOGV("FSR: %d\n", config->fsr);
+        if (apply)
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                        LSM303DLx_CTRL_REG4, reg1);
+
+        return result;
+}
+
+/**
+ *  @brief suspends the device to put it in its lowest power mode.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_suspend(void *mlsl_handle,
+                               struct ext_slave_descr *slave,
+                               struct ext_slave_platform_data *pdata)
+{
+        int result = INV_SUCCESS;
+        unsigned char reg1;
+        unsigned char reg2;
+        struct lsm303dlx_a_private_data *private_data =
+                (struct lsm303dlx_a_private_data *)(pdata->private_data);
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG1,
+                                       private_data->suspend.ctrl_reg1);
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG2, 0x0f);
+        reg1 = 0x40;
+        if (private_data->suspend.fsr == 8192)
+                reg1 |= 0x30;
+        else if (private_data->suspend.fsr == 4096)
+                reg1 |= 0x10;
+        /* else bits [4..5] are already zero */
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG4, reg1);
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_INT1_THS,
+                                       private_data->suspend.reg_ths);
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_INT1_DURATION,
+                                       private_data->suspend.reg_dur);
+
+        if (private_data->suspend.irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) {
+                reg1 = 0x02;
+                reg2 = 0x00;
+        } else if (private_data->suspend.irq_type ==
+                   MPU_SLAVE_IRQ_TYPE_MOTION) {
+                reg1 = 0x00;
+                reg2 = private_data->suspend.mot_int1_cfg;
+        } else {
+                reg1 = 0x00;
+                reg2 = 0x00;
+        }
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG3, reg1);
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_INT1_CFG, reg2);
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                LSM303DLx_HP_FILTER_RESET, 1, &reg1);
+        return result;
+}
+
+/**
+ *  @brief resume the device in the proper power state given the configuration
+ *         chosen.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_resume(void *mlsl_handle,
+                              struct ext_slave_descr *slave,
+                              struct ext_slave_platform_data *pdata)
+{
+        int result = INV_SUCCESS;
+        unsigned char reg1;
+        unsigned char reg2;
+        struct lsm303dlx_a_private_data *private_data =
+                (struct lsm303dlx_a_private_data *)(pdata->private_data);
+
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG1,
+                                       private_data->resume.ctrl_reg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(6);
+
+        /* Full Scale */
+        reg1 = 0x40;
+        if (private_data->resume.fsr == 8192)
+                reg1 |= 0x30;
+        else if (private_data->resume.fsr == 4096)
+                reg1 |= 0x10;
+
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG4, reg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        /* Configure high pass filter */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG2, 0x0F);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        if (private_data->resume.irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) {
+                reg1 = 0x02;
+                reg2 = 0x00;
+        } else if (private_data->resume.irq_type ==
+                   MPU_SLAVE_IRQ_TYPE_MOTION) {
+                reg1 = 0x00;
+                reg2 = private_data->resume.mot_int1_cfg;
+        } else {
+                reg1 = 0x00;
+                reg2 = 0x00;
+        }
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_CTRL_REG3, reg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_INT1_THS,
+                                       private_data->resume.reg_ths);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_INT1_DURATION,
+                                       private_data->resume.reg_dur);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                       LSM303DLx_INT1_CFG, reg2);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                LSM303DLx_HP_FILTER_RESET, 1, &reg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        return result;
+}
+
+/**
+ *  @brief read the sensor data from the device.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param data
+ *             a buffer to store the data read.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_read(void *mlsl_handle,
+                            struct ext_slave_descr *slave,
+                            struct ext_slave_platform_data *pdata,
+                            unsigned char *data)
+{
+        int result = INV_SUCCESS;
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                LSM303DLx_STATUS_REG, 1, data);
+        if (data[0] & 0x0F) {
+                result = inv_serial_read(mlsl_handle, pdata->address,
+                                        slave->read_reg, slave->read_len, data);
+        return result;
+        } else
+                return INV_ERROR_ACCEL_DATA_NOT_READY;
+}
+
+/**
+ *  @brief one-time device driver initialization function.
+ *         If the driver is built as a kernel module, this function will be
+ *         called when the module is loaded in the kernel.
+ *         If the driver is built-in in the kernel, this function will be
+ *         called at boot time.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_init(void *mlsl_handle,
+                            struct ext_slave_descr *slave,
+                            struct ext_slave_platform_data *pdata)
+{
+        long range;
+        struct lsm303dlx_a_private_data *private_data;
+        private_data = (struct lsm303dlx_a_private_data *)
+            kzalloc(sizeof(struct lsm303dlx_a_private_data), GFP_KERNEL);
+
+        if (!private_data)
+                return INV_ERROR_MEMORY_EXAUSTED;
+
+        pdata->private_data = private_data;
+
+        private_data->resume.ctrl_reg1 = 0x37;
+        private_data->suspend.ctrl_reg1 = 0x47;
+        private_data->resume.mot_int1_cfg = 0x95;
+        private_data->suspend.mot_int1_cfg = 0x2a;
+
+        lsm303dlx_a_set_odr(mlsl_handle, pdata, &private_data->suspend,
+                        false, 0);
+        lsm303dlx_a_set_odr(mlsl_handle, pdata, &private_data->resume,
+                        false, 200000);
+
+        range = range_fixedpoint_to_long_mg(slave->range);
+        lsm303dlx_a_set_fsr(mlsl_handle, pdata, &private_data->suspend,
+                        false, range);
+        lsm303dlx_a_set_fsr(mlsl_handle, pdata, &private_data->resume,
+                        false, range);
+
+        lsm303dlx_a_set_ths(mlsl_handle, pdata, &private_data->suspend,
+                        false, 80);
+        lsm303dlx_a_set_ths(mlsl_handle, pdata, &private_data->resume,
+                        false, 40);
+
+        lsm303dlx_a_set_dur(mlsl_handle, pdata, &private_data->suspend,
+                        false, 1000);
+        lsm303dlx_a_set_dur(mlsl_handle, pdata, &private_data->resume,
+                        false, 2540);
+
+        lsm303dlx_a_set_irq(mlsl_handle, pdata, &private_data->suspend,
+                        false, MPU_SLAVE_IRQ_TYPE_NONE);
+        lsm303dlx_a_set_irq(mlsl_handle, pdata, &private_data->resume,
+                        false, MPU_SLAVE_IRQ_TYPE_NONE);
+        return INV_SUCCESS;
+}
+
+/**
+ *  @brief one-time device driver exit function.
+ *         If the driver is built as a kernel module, this function will be
+ *         called when the module is removed from the kernel.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_exit(void *mlsl_handle,
+                            struct ext_slave_descr *slave,
+                            struct ext_slave_platform_data *pdata)
+{
+        kfree(pdata->private_data);
+        return INV_SUCCESS;
+}
+
+/**
+ *  @brief device configuration facility.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param data
+ *             a pointer to the configuration data structure.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_config(void *mlsl_handle,
+                              struct ext_slave_descr *slave,
+                              struct ext_slave_platform_data *pdata,
+                              struct ext_slave_config *data)
+{
+        struct lsm303dlx_a_private_data *private_data = pdata->private_data;
+        if (!data->data)
+                return INV_ERROR_INVALID_PARAMETER;
+
+        switch (data->key) {
+        case MPU_SLAVE_CONFIG_ODR_SUSPEND:
+                return lsm303dlx_a_set_odr(mlsl_handle, pdata,
+                                        &private_data->suspend,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_ODR_RESUME:
+                return lsm303dlx_a_set_odr(mlsl_handle, pdata,
+                                        &private_data->resume,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_FSR_SUSPEND:
+                return lsm303dlx_a_set_fsr(mlsl_handle, pdata,
+                                        &private_data->suspend,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_FSR_RESUME:
+                return lsm303dlx_a_set_fsr(mlsl_handle, pdata,
+                                        &private_data->resume,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_MOT_THS:
+                return lsm303dlx_a_set_ths(mlsl_handle, pdata,
+                                        &private_data->suspend,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_NMOT_THS:
+                return lsm303dlx_a_set_ths(mlsl_handle, pdata,
+                                        &private_data->resume,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_MOT_DUR:
+                return lsm303dlx_a_set_dur(mlsl_handle, pdata,
+                                        &private_data->suspend,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_NMOT_DUR:
+                return lsm303dlx_a_set_dur(mlsl_handle, pdata,
+                                        &private_data->resume,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_IRQ_SUSPEND:
+                return lsm303dlx_a_set_irq(mlsl_handle, pdata,
+                                        &private_data->suspend,
+                                        data->apply,
+                                        *((long *)data->data));
+        case MPU_SLAVE_CONFIG_IRQ_RESUME:
+                return lsm303dlx_a_set_irq(mlsl_handle, pdata,
+                                        &private_data->resume,
+                                        data->apply,
+                                        *((long *)data->data));
+        default:
+                LOG_RESULT_LOCATION(INV_ERROR_FEATURE_NOT_IMPLEMENTED);
+                return INV_ERROR_FEATURE_NOT_IMPLEMENTED;
+        };
+
+        return INV_SUCCESS;
+}
+
+/**
+ *  @brief facility to retrieve the device configuration.
+ *
+ *  @param mlsl_handle
+ *             the handle to the serial channel the device is connected to.
+ *  @param slave
+ *             a pointer to the slave descriptor data structure.
+ *  @param pdata
+ *             a pointer to the slave platform data.
+ *  @param data
+ *             a pointer to store the returned configuration data structure.
+ *
+ *  @return INV_SUCCESS if successful or a non-zero error code.
+ */
+static int lsm303dlx_a_get_config(void *mlsl_handle,
+                                  struct ext_slave_descr *slave,
+                                  struct ext_slave_platform_data *pdata,
+                                  struct ext_slave_config *data)
+{
+        struct lsm303dlx_a_private_data *private_data = pdata->private_data;
+        if (!data->data)
+                return INV_ERROR_INVALID_PARAMETER;
+
+        switch (data->key) {
+        case MPU_SLAVE_CONFIG_ODR_SUSPEND:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->suspend.odr;
+                break;
+        case MPU_SLAVE_CONFIG_ODR_RESUME:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->resume.odr;
+                break;
+        case MPU_SLAVE_CONFIG_FSR_SUSPEND:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->suspend.fsr;
+                break;
+        case MPU_SLAVE_CONFIG_FSR_RESUME:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->resume.fsr;
+                break;
+        case MPU_SLAVE_CONFIG_MOT_THS:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->suspend.ths;
+                break;
+        case MPU_SLAVE_CONFIG_NMOT_THS:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->resume.ths;
+                break;
+        case MPU_SLAVE_CONFIG_MOT_DUR:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->suspend.dur;
+                break;
+        case MPU_SLAVE_CONFIG_NMOT_DUR:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->resume.dur;
+                break;
+        case MPU_SLAVE_CONFIG_IRQ_SUSPEND:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->suspend.irq_type;
+                break;
+        case MPU_SLAVE_CONFIG_IRQ_RESUME:
+                (*(unsigned long *)data->data) =
+                        (unsigned long) private_data->resume.irq_type;
+                break;
+        default:
+                LOG_RESULT_LOCATION(INV_ERROR_FEATURE_NOT_IMPLEMENTED);
+                return INV_ERROR_FEATURE_NOT_IMPLEMENTED;
+        };
+
+        return INV_SUCCESS;
+}
+
+static struct ext_slave_descr lsm303dlx_a_descr = {
+        .init             = lsm303dlx_a_init,
+        .exit             = lsm303dlx_a_exit,
+        .suspend          = lsm303dlx_a_suspend,
+        .resume           = lsm303dlx_a_resume,
+        .read             = lsm303dlx_a_read,
+        .config           = lsm303dlx_a_config,
+        .get_config       = lsm303dlx_a_get_config,
+        .name             = "lsm303dlx_a",
+        .type             = EXT_SLAVE_TYPE_ACCEL,
+        .id               = ACCEL_ID_LSM303DLX,
+        .read_reg         = (0x28 | 0x80), /* 0x80 for burst reads */
+        .read_len         = 6,
+        .endian           = EXT_SLAVE_BIG_ENDIAN,
+        .range            = {2, 480},
+        .trigger          = NULL,
+};
+
+static
+struct ext_slave_descr *lsm303dlx_a_get_slave_descr(void)
+{
+        return &lsm303dlx_a_descr;
+}
+
+/* -------------------------------------------------------------------------- */
+struct lsm303dlx_a_mod_private_data {
+        struct i2c_client *client;
+        struct ext_slave_platform_data *pdata;
+};
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+static int lsm303dlx_a_mod_probe(struct i2c_client *client,
+                           const struct i2c_device_id *devid)
+{
+        struct ext_slave_platform_data *pdata;
+        struct lsm303dlx_a_mod_private_data *private_data;
+        int result = 0;
+
+        dev_info(&client->adapter->dev, "%s: %s\n", __func__, devid->name);
+
+        if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+                result = -ENODEV;
+                goto out_no_free;
+        }
+
+        pdata = client->dev.platform_data;
+        if (!pdata) {
+                dev_err(&client->adapter->dev,
+                        "Missing platform data for slave %s\n", devid->name);
+                result = -EFAULT;
+                goto out_no_free;
+        }
+
+        private_data = kzalloc(sizeof(*private_data), GFP_KERNEL);
+        if (!private_data) {
+                result = -ENOMEM;
+                goto out_no_free;
+        }
+
+        i2c_set_clientdata(client, private_data);
+        private_data->client = client;
+        private_data->pdata = pdata;
+
+        result = inv_mpu_register_slave(THIS_MODULE, client, pdata,
+                                        lsm303dlx_a_get_slave_descr);
+        if (result) {
+                dev_err(&client->adapter->dev,
+                        "Slave registration failed: %s, %d\n",
+                        devid->name, result);
+                goto out_free_memory;
+        }
+
+        return result;
+
+out_free_memory:
+        kfree(private_data);
+out_no_free:
+        dev_err(&client->adapter->dev, "%s failed %d\n", __func__, result);
+        return result;
+
+}
+
+static int lsm303dlx_a_mod_remove(struct i2c_client *client)
+{
+        struct lsm303dlx_a_mod_private_data *private_data =
+                i2c_get_clientdata(client);
+
+        dev_dbg(&client->adapter->dev, "%s\n", __func__);
+
+        inv_mpu_unregister_slave(client, private_data->pdata,
+                                lsm303dlx_a_get_slave_descr);
+
+        kfree(private_data);
+        return 0;
+}
+
+static const struct i2c_device_id lsm303dlx_a_mod_id[] = {
+        { "lsm303dlx", ACCEL_ID_LSM303DLX },
+        {}
+};
+
+MODULE_DEVICE_TABLE(i2c, lsm303dlx_a_mod_id);
+
+static struct i2c_driver lsm303dlx_a_mod_driver = {
+        .class = I2C_CLASS_HWMON,
+        .probe = lsm303dlx_a_mod_probe,
+        .remove = lsm303dlx_a_mod_remove,
+        .id_table = lsm303dlx_a_mod_id,
+        .driver = {
+                   .owner = THIS_MODULE,
+                   .name = "lsm303dlx_a_mod",
+                   },
+        .address_list = normal_i2c,
+};
+
+static int __init lsm303dlx_a_mod_init(void)
+{
+        int res = i2c_add_driver(&lsm303dlx_a_mod_driver);
+        pr_info("%s: Probe name %s\n", __func__, "lsm303dlx_a_mod");
+        if (res)
+                pr_err("%s failed\n", __func__);
+        return res;
+}
+
+static void __exit lsm303dlx_a_mod_exit(void)
+{
+        pr_info("%s\n", __func__);
+        i2c_del_driver(&lsm303dlx_a_mod_driver);
+}
+
+module_init(lsm303dlx_a_mod_init);
+module_exit(lsm303dlx_a_mod_exit);
+
+MODULE_AUTHOR("Invensense Corporation");
+MODULE_DESCRIPTION("Driver to integrate LSM303DLX_A sensor with the MPU");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("lsm303dlx_a_mod");
+
+/**
+ *  @}
+ */