Added missing tegra files.HEADmaster

1 files changed, 841 insertions, 0 deletions

diff --git a/drivers/misc/inv_mpu/accel/kxtf9.c b/drivers/misc/inv_mpu/accel/kxtf9.c
new file mode 100644
index 00000000000..80776f249c6
--- /dev/null
+++ b/drivers/misc/inv_mpu/accel/kxtf9.c
@@ -0,0 +1,841 @@
+/*
+        $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      Accelerometer setup and handling methods for Kionix KXTF9.
+ *
+ *  @{
+ *      @file   kxtf9.c
+ *      @brief  Accelerometer setup and handling methods for Kionix KXTF9.
+*/
+
+/* -------------------------------------------------------------------------- */
+
+#undef MPL_LOG_NDEBUG
+#define MPL_LOG_NDEBUG 1
+
+#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"
+
+#define KXTF9_XOUT_HPF_L                (0x00)  /* 0000 0000 */
+#define KXTF9_XOUT_HPF_H                (0x01)  /* 0000 0001 */
+#define KXTF9_YOUT_HPF_L                (0x02)  /* 0000 0010 */
+#define KXTF9_YOUT_HPF_H                (0x03)  /* 0000 0011 */
+#define KXTF9_ZOUT_HPF_L                (0x04)  /* 0001 0100 */
+#define KXTF9_ZOUT_HPF_H                (0x05)  /* 0001 0101 */
+#define KXTF9_XOUT_L                    (0x06)  /* 0000 0110 */
+#define KXTF9_XOUT_H                    (0x07)  /* 0000 0111 */
+#define KXTF9_YOUT_L                    (0x08)  /* 0000 1000 */
+#define KXTF9_YOUT_H                    (0x09)  /* 0000 1001 */
+#define KXTF9_ZOUT_L                    (0x0A)  /* 0001 1010 */
+#define KXTF9_ZOUT_H                    (0x0B)  /* 0001 1011 */
+#define KXTF9_ST_RESP                   (0x0C)  /* 0000 1100 */
+#define KXTF9_WHO_AM_I                  (0x0F)  /* 0000 1111 */
+#define KXTF9_TILT_POS_CUR              (0x10)  /* 0001 0000 */
+#define KXTF9_TILT_POS_PRE              (0x11)  /* 0001 0001 */
+#define KXTF9_INT_SRC_REG1              (0x15)  /* 0001 0101 */
+#define KXTF9_INT_SRC_REG2              (0x16)  /* 0001 0110 */
+#define KXTF9_STATUS_REG                (0x18)  /* 0001 1000 */
+#define KXTF9_INT_REL                   (0x1A)  /* 0001 1010 */
+#define KXTF9_CTRL_REG1                 (0x1B)  /* 0001 1011 */
+#define KXTF9_CTRL_REG2                 (0x1C)  /* 0001 1100 */
+#define KXTF9_CTRL_REG3                 (0x1D)  /* 0001 1101 */
+#define KXTF9_INT_CTRL_REG1             (0x1E)  /* 0001 1110 */
+#define KXTF9_INT_CTRL_REG2             (0x1F)  /* 0001 1111 */
+#define KXTF9_INT_CTRL_REG3             (0x20)  /* 0010 0000 */
+#define KXTF9_DATA_CTRL_REG             (0x21)  /* 0010 0001 */
+#define KXTF9_TILT_TIMER                (0x28)  /* 0010 1000 */
+#define KXTF9_WUF_TIMER                 (0x29)  /* 0010 1001 */
+#define KXTF9_TDT_TIMER                 (0x2B)  /* 0010 1011 */
+#define KXTF9_TDT_H_THRESH              (0x2C)  /* 0010 1100 */
+#define KXTF9_TDT_L_THRESH              (0x2D)  /* 0010 1101 */
+#define KXTF9_TDT_TAP_TIMER             (0x2E)  /* 0010 1110 */
+#define KXTF9_TDT_TOTAL_TIMER           (0x2F)  /* 0010 1111 */
+#define KXTF9_TDT_LATENCY_TIMER         (0x30)  /* 0011 0000 */
+#define KXTF9_TDT_WINDOW_TIMER          (0x31)  /* 0011 0001 */
+#define KXTF9_WUF_THRESH                (0x5A)  /* 0101 1010 */
+#define KXTF9_TILT_ANGLE                (0x5C)  /* 0101 1100 */
+#define KXTF9_HYST_SET                  (0x5F)  /* 0101 1111 */
+
+#define KXTF9_MAX_DUR (0xFF)
+#define KXTF9_MAX_THS (0xFF)
+#define KXTF9_THS_COUNTS_P_G (32)
+
+/* -------------------------------------------------------------------------- */
+
+struct kxtf9_config {
+        unsigned long odr;      /* Output data rate mHz */
+        unsigned int fsr;       /* full scale range mg */
+        unsigned int ths;       /* Motion no-motion thseshold mg */
+        unsigned int dur;       /* Motion no-motion duration ms */
+        unsigned int irq_type;
+        unsigned char reg_ths;
+        unsigned char reg_dur;
+        unsigned char reg_odr;
+        unsigned char reg_int_cfg1;
+        unsigned char reg_int_cfg2;
+        unsigned char ctrl_reg1;
+};
+
+struct kxtf9_private_data {
+        struct kxtf9_config suspend;
+        struct kxtf9_config resume;
+};
+
+static int kxtf9_set_ths(void *mlsl_handle,
+                         struct ext_slave_platform_data *pdata,
+                         struct kxtf9_config *config, int apply, long ths)
+{
+        int result = INV_SUCCESS;
+        if ((ths * KXTF9_THS_COUNTS_P_G / 1000) > KXTF9_MAX_THS)
+                ths = (long)(KXTF9_MAX_THS * 1000) / KXTF9_THS_COUNTS_P_G;
+
+        if (ths < 0)
+                ths = 0;
+
+        config->ths = ths;
+        config->reg_ths = (unsigned char)
+            ((long)(ths * KXTF9_THS_COUNTS_P_G) / 1000);
+        MPL_LOGV("THS: %d, 0x%02x\n", config->ths, (int)config->reg_ths);
+        if (apply)
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_WUF_THRESH,
+                                                 config->reg_ths);
+        return result;
+}
+
+static int kxtf9_set_dur(void *mlsl_handle,
+                         struct ext_slave_platform_data *pdata,
+                         struct kxtf9_config *config, int apply, long dur)
+{
+        int result = INV_SUCCESS;
+        long reg_dur = (dur * config->odr) / 1000000L;
+        config->dur = dur;
+
+        if (reg_dur > KXTF9_MAX_DUR)
+                reg_dur = KXTF9_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,
+                                                 KXTF9_WUF_TIMER,
+                                                 (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 kxtf9_set_irq(void *mlsl_handle,
+                         struct ext_slave_platform_data *pdata,
+                         struct kxtf9_config *config, int apply, long irq_type)
+{
+        int result = INV_SUCCESS;
+        struct kxtf9_private_data *private_data = pdata->private_data;
+
+        config->irq_type = (unsigned char)irq_type;
+        config->ctrl_reg1 &= ~0x22;
+        if (irq_type == MPU_SLAVE_IRQ_TYPE_DATA_READY) {
+                config->ctrl_reg1 |= 0x20;
+                config->reg_int_cfg1 = 0x38;
+                config->reg_int_cfg2 = 0x00;
+        } else if (irq_type == MPU_SLAVE_IRQ_TYPE_MOTION) {
+                config->ctrl_reg1 |= 0x02;
+                if ((unsigned long)config ==
+                    (unsigned long)&private_data->suspend)
+                        config->reg_int_cfg1 = 0x34;
+                else
+                        config->reg_int_cfg1 = 0x24;
+                config->reg_int_cfg2 = 0xE0;
+        } else {
+                config->reg_int_cfg1 = 0x00;
+                config->reg_int_cfg2 = 0x00;
+        }
+
+        if (apply) {
+                /* Must clear bit 7 before writing new configuration */
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_CTRL_REG1, 0x40);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_INT_CTRL_REG1,
+                                                 config->reg_int_cfg1);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_INT_CTRL_REG2,
+                                                 config->reg_int_cfg2);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_CTRL_REG1,
+                                                 config->ctrl_reg1);
+        }
+        MPL_LOGV("CTRL_REG1: %lx, INT_CFG1: %lx, INT_CFG2: %lx\n",
+                 (unsigned long)config->ctrl_reg1,
+                 (unsigned long)config->reg_int_cfg1,
+                 (unsigned long)config->reg_int_cfg2);
+
+        return result;
+}
+
+/**
+ * Set the Output data rate for the particular configuration
+ *
+ * @param config Config to modify with new ODR
+ * @param odr Output data rate in units of 1/1000Hz
+ */
+static int kxtf9_set_odr(void *mlsl_handle,
+                         struct ext_slave_platform_data *pdata,
+                         struct kxtf9_config *config, int apply, long odr)
+{
+        unsigned char bits;
+        int result = INV_SUCCESS;
+
+        /* Data sheet says there is 12.5 hz, but that seems to produce a single
+         * correct data value, thus we remove it from the table */
+        if (odr > 400000L) {
+                config->odr = 800000L;
+                bits = 0x06;
+        } else if (odr > 200000L) {
+                config->odr = 400000L;
+                bits = 0x05;
+        } else if (odr > 100000L) {
+                config->odr = 200000L;
+                bits = 0x04;
+        } else if (odr > 50000) {
+                config->odr = 100000L;
+                bits = 0x03;
+        } else if (odr > 25000) {
+                config->odr = 50000;
+                bits = 0x02;
+        } else if (odr != 0) {
+                config->odr = 25000;
+                bits = 0x01;
+        } else {
+                config->odr = 0;
+                bits = 0;
+        }
+
+        if (odr != 0)
+                config->ctrl_reg1 |= 0x80;
+        else
+                config->ctrl_reg1 &= ~0x80;
+
+        config->reg_odr = bits;
+        kxtf9_set_dur(mlsl_handle, pdata, config, apply, config->dur);
+        MPL_LOGV("ODR: %ld, 0x%02x\n", config->odr, (int)config->ctrl_reg1);
+        if (apply) {
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_DATA_CTRL_REG,
+                                                 config->reg_odr);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_CTRL_REG1, 0x40);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_CTRL_REG1,
+                                                 config->ctrl_reg1);
+        }
+        return result;
+}
+
+/**
+ * Set the full scale range of the accels
+ *
+ * @param config pointer to configuration
+ * @param fsr requested full scale range
+ */
+static int kxtf9_set_fsr(void *mlsl_handle,
+                         struct ext_slave_platform_data *pdata,
+                         struct kxtf9_config *config, int apply, long fsr)
+{
+        int result = INV_SUCCESS;
+
+        config->ctrl_reg1 = (config->ctrl_reg1 & 0xE7);
+        if (fsr <= 2000) {
+                config->fsr = 2000;
+                config->ctrl_reg1 |= 0x00;
+        } else if (fsr <= 4000) {
+                config->fsr = 4000;
+                config->ctrl_reg1 |= 0x08;
+        } else {
+                config->fsr = 8000;
+                config->ctrl_reg1 |= 0x10;
+        }
+
+        MPL_LOGV("FSR: %d\n", config->fsr);
+        if (apply) {
+                /* Must clear bit 7 before writing new configuration */
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_CTRL_REG1, 0x40);
+                result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                                 KXTF9_CTRL_REG1,
+                                                 config->ctrl_reg1);
+        }
+        return result;
+}
+
+static int kxtf9_suspend(void *mlsl_handle,
+                         struct ext_slave_descr *slave,
+                         struct ext_slave_platform_data *pdata)
+{
+        int result;
+        unsigned char data;
+        struct kxtf9_private_data *private_data = pdata->private_data;
+
+        /* Wake up */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_CTRL_REG1, 0x40);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* INT_CTRL_REG1: */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_INT_CTRL_REG1,
+                                         private_data->suspend.reg_int_cfg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* WUF_THRESH: */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_WUF_THRESH,
+                                         private_data->suspend.reg_ths);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* DATA_CTRL_REG */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_DATA_CTRL_REG,
+                                         private_data->suspend.reg_odr);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* WUF_TIMER */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_WUF_TIMER,
+                                         private_data->suspend.reg_dur);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        /* Normal operation  */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_CTRL_REG1,
+                                         private_data->suspend.ctrl_reg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                 KXTF9_INT_REL, 1, &data);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        return result;
+}
+
+/* full scale setting - register and mask */
+#define ACCEL_KIONIX_CTRL_REG      (0x1b)
+#define ACCEL_KIONIX_CTRL_MASK     (0x18)
+
+static int kxtf9_resume(void *mlsl_handle,
+                        struct ext_slave_descr *slave,
+                        struct ext_slave_platform_data *pdata)
+{
+        int result = INV_SUCCESS;
+        unsigned char data;
+        struct kxtf9_private_data *private_data = pdata->private_data;
+
+        /* Wake up */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_CTRL_REG1, 0x40);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* INT_CTRL_REG1: */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_INT_CTRL_REG1,
+                                         private_data->resume.reg_int_cfg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* WUF_THRESH: */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_WUF_THRESH,
+                                         private_data->resume.reg_ths);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* DATA_CTRL_REG */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_DATA_CTRL_REG,
+                                         private_data->resume.reg_odr);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* WUF_TIMER */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_WUF_TIMER,
+                                         private_data->resume.reg_dur);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        /* Normal operation  */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_CTRL_REG1,
+                                         private_data->resume.ctrl_reg1);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                 KXTF9_INT_REL, 1, &data);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        return INV_SUCCESS;
+}
+
+static int kxtf9_init(void *mlsl_handle,
+                      struct ext_slave_descr *slave,
+                      struct ext_slave_platform_data *pdata)
+{
+
+        struct kxtf9_private_data *private_data;
+        int result = INV_SUCCESS;
+
+        private_data = (struct kxtf9_private_data *)
+            kzalloc(sizeof(struct kxtf9_private_data), GFP_KERNEL);
+
+        if (!private_data)
+                return INV_ERROR_MEMORY_EXAUSTED;
+
+        /* RAM reset */
+        /* Fastest Reset */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_CTRL_REG1, 0x40);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* Fastest Reset */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_DATA_CTRL_REG, 0x36);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        /* Reset */
+        result = inv_serial_single_write(mlsl_handle, pdata->address,
+                                         KXTF9_CTRL_REG3, 0xcd);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        msleep(2);
+
+        pdata->private_data = private_data;
+
+        private_data->resume.ctrl_reg1 = 0xC0;
+        private_data->suspend.ctrl_reg1 = 0x40;
+
+        result = kxtf9_set_dur(mlsl_handle, pdata, &private_data->suspend,
+                               false, 1000);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = kxtf9_set_dur(mlsl_handle, pdata, &private_data->resume,
+                               false, 2540);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        result = kxtf9_set_odr(mlsl_handle, pdata, &private_data->suspend,
+                               false, 50000);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = kxtf9_set_odr(mlsl_handle, pdata, &private_data->resume,
+                               false, 200000L);
+
+        result = kxtf9_set_fsr(mlsl_handle, pdata, &private_data->suspend,
+                               false, 2000);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = kxtf9_set_fsr(mlsl_handle, pdata, &private_data->resume,
+                               false, 2000);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        result = kxtf9_set_ths(mlsl_handle, pdata, &private_data->suspend,
+                               false, 80);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = kxtf9_set_ths(mlsl_handle, pdata, &private_data->resume,
+                               false, 40);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        result = kxtf9_set_irq(mlsl_handle, pdata, &private_data->suspend,
+                               false, MPU_SLAVE_IRQ_TYPE_NONE);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        result = kxtf9_set_irq(mlsl_handle, pdata, &private_data->resume,
+                               false, MPU_SLAVE_IRQ_TYPE_NONE);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        return result;
+}
+
+static int kxtf9_exit(void *mlsl_handle,
+                      struct ext_slave_descr *slave,
+                      struct ext_slave_platform_data *pdata)
+{
+        kfree(pdata->private_data);
+        return INV_SUCCESS;
+}
+
+static int kxtf9_config(void *mlsl_handle,
+                        struct ext_slave_descr *slave,
+                        struct ext_slave_platform_data *pdata,
+                        struct ext_slave_config *data)
+{
+        struct kxtf9_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 kxtf9_set_odr(mlsl_handle, pdata,
+                                     &private_data->suspend,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_ODR_RESUME:
+                return kxtf9_set_odr(mlsl_handle, pdata,
+                                     &private_data->resume,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_FSR_SUSPEND:
+                return kxtf9_set_fsr(mlsl_handle, pdata,
+                                     &private_data->suspend,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_FSR_RESUME:
+                return kxtf9_set_fsr(mlsl_handle, pdata,
+                                     &private_data->resume,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_MOT_THS:
+                return kxtf9_set_ths(mlsl_handle, pdata,
+                                     &private_data->suspend,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_NMOT_THS:
+                return kxtf9_set_ths(mlsl_handle, pdata,
+                                     &private_data->resume,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_MOT_DUR:
+                return kxtf9_set_dur(mlsl_handle, pdata,
+                                     &private_data->suspend,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_NMOT_DUR:
+                return kxtf9_set_dur(mlsl_handle, pdata,
+                                     &private_data->resume,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_IRQ_SUSPEND:
+                return kxtf9_set_irq(mlsl_handle, pdata,
+                                     &private_data->suspend,
+                                     data->apply, *((long *)data->data));
+        case MPU_SLAVE_CONFIG_IRQ_RESUME:
+                return kxtf9_set_irq(mlsl_handle, pdata,
+                                     &private_data->resume,
+                                     data->apply, *((long *)data->data));
+        default:
+                return INV_ERROR_FEATURE_NOT_IMPLEMENTED;
+        };
+
+        return INV_SUCCESS;
+}
+
+static int kxtf9_get_config(void *mlsl_handle,
+                            struct ext_slave_descr *slave,
+                            struct ext_slave_platform_data *pdata,
+                            struct ext_slave_config *data)
+{
+        struct kxtf9_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:
+                return INV_ERROR_FEATURE_NOT_IMPLEMENTED;
+        };
+
+        return INV_SUCCESS;
+}
+
+static int kxtf9_read(void *mlsl_handle,
+                      struct ext_slave_descr *slave,
+                      struct ext_slave_platform_data *pdata,
+                      unsigned char *data)
+{
+        int result;
+        unsigned char reg;
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                 KXTF9_INT_SRC_REG2, 1, &reg);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+
+        if (!(reg & 0x10))
+                return INV_ERROR_ACCEL_DATA_NOT_READY;
+
+        result = inv_serial_read(mlsl_handle, pdata->address,
+                                 slave->read_reg, slave->read_len, data);
+        if (result) {
+                LOG_RESULT_LOCATION(result);
+                return result;
+        }
+        return result;
+}
+
+static struct ext_slave_descr kxtf9_descr = {
+        .init             = kxtf9_init,
+        .exit             = kxtf9_exit,
+        .suspend          = kxtf9_suspend,
+        .resume           = kxtf9_resume,
+        .read             = kxtf9_read,
+        .config           = kxtf9_config,
+        .get_config       = kxtf9_get_config,
+        .name             = "kxtf9",
+        .type             = EXT_SLAVE_TYPE_ACCEL,
+        .id               = ACCEL_ID_KXTF9,
+        .read_reg         = 0x06,
+        .read_len         = 6,
+        .endian           = EXT_SLAVE_LITTLE_ENDIAN,
+        .range            = {2, 0},
+        .trigger          = NULL,
+};
+
+static
+struct ext_slave_descr *kxtf9_get_slave_descr(void)
+{
+        return &kxtf9_descr;
+}
+
+/* -------------------------------------------------------------------------- */
+struct kxtf9_mod_private_data {
+        struct i2c_client *client;
+        struct ext_slave_platform_data *pdata;
+};
+
+static unsigned short normal_i2c[] = { I2C_CLIENT_END };
+
+static int kxtf9_mod_probe(struct i2c_client *client,
+                           const struct i2c_device_id *devid)
+{
+        struct ext_slave_platform_data *pdata;
+        struct kxtf9_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,
+                                        kxtf9_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 kxtf9_mod_remove(struct i2c_client *client)
+{
+        struct kxtf9_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,
+                                kxtf9_get_slave_descr);
+
+        kfree(private_data);
+        return 0;
+}
+
+static const struct i2c_device_id kxtf9_mod_id[] = {
+        { "kxtf9", ACCEL_ID_KXTF9 },
+        {}
+};
+
+MODULE_DEVICE_TABLE(i2c, kxtf9_mod_id);
+
+static struct i2c_driver kxtf9_mod_driver = {
+        .class = I2C_CLASS_HWMON,
+        .probe = kxtf9_mod_probe,
+        .remove = kxtf9_mod_remove,
+        .id_table = kxtf9_mod_id,
+        .driver = {
+                   .owner = THIS_MODULE,
+                   .name = "kxtf9_mod",
+                   },
+        .address_list = normal_i2c,
+};
+
+static int __init kxtf9_mod_init(void)
+{
+        int res = i2c_add_driver(&kxtf9_mod_driver);
+        pr_info("%s: Probe name %s\n", __func__, "kxtf9_mod");
+        if (res)
+                pr_err("%s failed\n", __func__);
+        return res;
+}
+
+static void __exit kxtf9_mod_exit(void)
+{
+        pr_info("%s\n", __func__);
+        i2c_del_driver(&kxtf9_mod_driver);
+}
+
+module_init(kxtf9_mod_init);
+module_exit(kxtf9_mod_exit);
+
+MODULE_AUTHOR("Invensense Corporation");
+MODULE_DESCRIPTION("Driver to integrate KXTF9 sensor with the MPU");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("kxtf9_mod");
+
+/**
+ *  @}
+ */