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Message-Id: <1309486707-1658-9-git-send-email-nroyer@invensense.com>
Date: Thu, 30 Jun 2011 19:18:25 -0700
From: Nathan Royer <nroyer@...ensense.com>
To: Nathan Royer <nroyer@...ensense.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Greg Kroah-Hartman <gregkh@...e.de>,
Jonathan Cameron <jic23@....ac.uk>,
Jiri Kosina <jkosina@...e.cz>, Alan Cox <alan@...ux.intel.com>,
Jean Delvare <khali@...ux-fr.org>,
linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: [PATCH 09/11] misc: Add slave driver for kxtf9 accelerometer
Signed-off-by: Nathan Royer <nroyer@...ensense.com>
---
drivers/misc/inv_mpu/Kconfig | 2 +
drivers/misc/inv_mpu/Makefile | 2 +
drivers/misc/inv_mpu/accel/Kconfig | 23 +
drivers/misc/inv_mpu/accel/Makefile | 7 +
drivers/misc/inv_mpu/accel/kxtf9.c | 841 +++++++++++++++++++++++++++++++++++
5 files changed, 875 insertions(+), 0 deletions(-)
create mode 100644 drivers/misc/inv_mpu/accel/Kconfig
create mode 100644 drivers/misc/inv_mpu/accel/Makefile
create mode 100644 drivers/misc/inv_mpu/accel/kxtf9.c
diff --git a/drivers/misc/inv_mpu/Kconfig b/drivers/misc/inv_mpu/Kconfig
index fdfa7a6..6116010 100644
--- a/drivers/misc/inv_mpu/Kconfig
+++ b/drivers/misc/inv_mpu/Kconfig
@@ -55,4 +55,6 @@ config MPU_SENSORS_MPU6050_GYRO
endchoice
+source "drivers/misc/inv_mpu/accel/Kconfig"
+
endif #INV_SENSORS
diff --git a/drivers/misc/inv_mpu/Makefile b/drivers/misc/inv_mpu/Makefile
index 48fc55a..d2c2c9a 100644
--- a/drivers/misc/inv_mpu/Makefile
+++ b/drivers/misc/inv_mpu/Makefile
@@ -15,3 +15,5 @@ mpu3050-objs += mldl_cfg.o
mpu3050-objs += mldl_print_cfg.o
EXTRA_CFLAGS += -Idrivers/misc/inv_mpu
+
+obj-y += accel/
diff --git a/drivers/misc/inv_mpu/accel/Kconfig b/drivers/misc/inv_mpu/accel/Kconfig
new file mode 100644
index 0000000..5e7aeaf
--- /dev/null
+++ b/drivers/misc/inv_mpu/accel/Kconfig
@@ -0,0 +1,23 @@
+menuconfig INV_SENSORS_ACCELEROMETERS
+ bool "Accelerometer Slave Sensors"
+ default y
+ ---help---
+ Say Y here to get to see options for device drivers for various
+ accelerometrs for integration with the MPU3050 or MPU6050 driver.
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if INV_SENSORS_ACCELEROMETERS
+
+config MPU_SENSORS_KXTF9
+ tristate "Kionix KXTF9"
+ depends on MPU_SENSORS_MPU3050 || MPU_SENSORS_MPU6050B1 || MPU_SENSORS_MPU6050A2
+ help
+ This enables support for the Kionix KXFT9 accelerometer
+ This support is for integration with the MPU3050 gyroscope device
+ driver. Only one accelerometer can be registered at a time.
+ Specifying more that one accelerometer in the board file will result
+ in runtime errors.
+
+endif
diff --git a/drivers/misc/inv_mpu/accel/Makefile b/drivers/misc/inv_mpu/accel/Makefile
new file mode 100644
index 0000000..9592973
--- /dev/null
+++ b/drivers/misc/inv_mpu/accel/Makefile
@@ -0,0 +1,7 @@
+#
+# Accel Slaves to MPUxxxx
+#
+obj-$(CONFIG_MPU_SENSORS_KXTF9) += inv_mpu_kxtf9.o
+inv_mpu_kxtf9-objs += kxtf9.o
+
+EXTRA_CFLAGS += -Idrivers/misc/inv_mpu
diff --git a/drivers/misc/inv_mpu/accel/kxtf9.c b/drivers/misc/inv_mpu/accel/kxtf9.c
new file mode 100644
index 0000000..33fafc8
--- /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 int 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 = (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) / 1000000;
+ 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 > 400000) {
+ config->odr = 800000;
+ bits = 0x06;
+ } else if (odr > 200000) {
+ config->odr = 400000;
+ bits = 0x05;
+ } else if (odr > 100000) {
+ config->odr = 200000;
+ bits = 0x04;
+ } else if (odr > 50000) {
+ config->odr = 100000;
+ 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: %d, 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, 200000);
+
+ 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, ®);
+ 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");
+
+/**
+ * @}
+ */
--
1.7.4.1
--
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