Merge commit 'AU_LINUX_ANDROID_ICS.04.00.04.00.126' into msm-3.4
AU_LINUX_ANDROID_ICS.04.00.04.00.126 from msm-3.0.
First parent is from google/android-3.4.
* commit 'AU_LINUX_ANDROID_ICS.04.00.04.00.126': (8712 commits)
PRNG: Device tree entry for qrng device.
vidc:1080p: Set video core timeout value for Thumbnail mode
msm: sps: improve the debugging support in SPS driver
board-8064 msm: Overlap secure and non secure video firmware heaps.
msm: clock: Add handoff ops for 7x30 and copper XO clocks
msm_fb: display: Wait for external vsync before DTV IOMMU unmap
msm: Fix ciruclar dependency in debug UART settings
msm: gdsc: Add GDSC regulator driver for msm-copper
defconfig: Enable Mobicore Driver.
mobicore: Add mobicore driver.
mobicore: rename variable to lower case.
mobicore: rename folder.
mobicore: add makefiles
mobicore: initial import of kernel driver
ASoC: msm: Add SLIMBUS_2_RX CPU DAI
board-8064-gpio: Update FUNC for EPM SPI CS
msm_fb: display: Remove chicken bit config during video playback
mmc: msm_sdcc: enable the sanitize capability
msm-fb: display: lm2 writeback support on mpq platfroms
msm_fb: display: Disable LVDS phy & pll during panel off
...
Signed-off-by: Steve Muckle <smuckle@codeaurora.org>
diff --git a/drivers/input/touchscreen/synaptics/rmi_sensor.c b/drivers/input/touchscreen/synaptics/rmi_sensor.c
new file mode 100644
index 0000000..2c64609
--- /dev/null
+++ b/drivers/input/touchscreen/synaptics/rmi_sensor.c
@@ -0,0 +1,662 @@
+/**
+ * Synaptics Register Mapped Interface (RMI4) - RMI Sensor Module.
+ * Copyright (C) 2007 - 2011, Synaptics Incorporated
+ *
+ */
+/*
+ * This file is licensed under the GPL2 license.
+ *
+ *############################################################################
+ * GPL
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * 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.
+ *
+ *############################################################################
+ */
+
+static const char sensorname[] = "sensor";
+
+#include <linux/kernel.h>
+#include <linux/gpio.h>
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/hrtimer.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+
+
+#include "rmi_drvr.h"
+#include "rmi_bus.h"
+#include "rmi_function.h"
+#include "rmi_sensor.h"
+
+long polltime = 25000000; /* Shared with rmi_function.c. */
+EXPORT_SYMBOL(polltime);
+module_param(polltime, long, 0644);
+MODULE_PARM_DESC(polltime, "How long to wait between polls (in nano seconds).");
+
+
+#define PDT_START_SCAN_LOCATION 0x00E9
+#define PDT_END_SCAN_LOCATION 0x0005
+#define PDT_ENTRY_SIZE 0x0006
+
+static DEFINE_MUTEX(rfi_mutex);
+
+struct rmi_functions *rmi_find_function(int functionNum);
+
+int rmi_read(struct rmi_sensor_driver *sensor, unsigned short address,
+ char *dest)
+{
+ struct rmi_phys_driver *rpd = sensor->rpd;
+ if (!rpd)
+ return -ENODEV;
+ return rpd->read(rpd, address, dest);
+}
+EXPORT_SYMBOL(rmi_read);
+
+int rmi_write(struct rmi_sensor_driver *sensor, unsigned short address,
+ unsigned char data)
+{
+ struct rmi_phys_driver *rpd = sensor->rpd;
+ if (!rpd)
+ return -ENODEV;
+ return rpd->write(rpd, address, data);
+}
+EXPORT_SYMBOL(rmi_write);
+
+int rmi_read_multiple(struct rmi_sensor_driver *sensor,
+ unsigned short address, char *dest, int length)
+{
+ struct rmi_phys_driver *rpd = sensor->rpd;
+ if (!rpd)
+ return -ENODEV;
+ return rpd->read_multiple(rpd, address, dest, length);
+}
+EXPORT_SYMBOL(rmi_read_multiple);
+
+int rmi_write_multiple(struct rmi_sensor_driver *sensor,
+ unsigned short address, unsigned char *data, int length)
+{
+ struct rmi_phys_driver *rpd = sensor->rpd;
+ if (!rpd)
+ return -ENODEV;
+ return rpd->write_multiple(rpd, address, data, length);
+}
+EXPORT_SYMBOL(rmi_write_multiple);
+
+/* Utility routine to set bits in a register. */
+int rmi_set_bits(struct rmi_sensor_driver *sensor, unsigned short address,
+ unsigned char bits)
+{
+ unsigned char reg_contents;
+ int retval;
+
+ retval = rmi_read(sensor, address, ®_contents);
+ if (retval)
+ return retval;
+ reg_contents = reg_contents | bits;
+ retval = rmi_write(sensor, address, reg_contents);
+ if (retval == 1)
+ return 0;
+ else if (retval == 0)
+ return -EINVAL; /* TODO: What should this be? */
+ else
+ return retval;
+}
+EXPORT_SYMBOL(rmi_set_bits);
+
+/* Utility routine to clear bits in a register. */
+int rmi_clear_bits(struct rmi_sensor_driver *sensor,
+ unsigned short address, unsigned char bits)
+{
+ unsigned char reg_contents;
+ int retval;
+
+ retval = rmi_read(sensor, address, ®_contents);
+ if (retval)
+ return retval;
+ reg_contents = reg_contents & ~bits;
+ retval = rmi_write(sensor, address, reg_contents);
+ if (retval == 1)
+ return 0;
+ else if (retval == 0)
+ return -EINVAL; /* TODO: What should this be? */
+ else
+ return retval;
+}
+EXPORT_SYMBOL(rmi_clear_bits);
+
+/* Utility routine to set the value of a bit field in a register. */
+int rmi_set_bit_field(struct rmi_sensor_driver *sensor,
+ unsigned short address, unsigned char field_mask, unsigned char bits)
+{
+ unsigned char reg_contents;
+ int retval;
+
+ retval = rmi_read(sensor, address, ®_contents);
+ if (retval)
+ return retval;
+ reg_contents = (reg_contents & ~field_mask) | bits;
+ retval = rmi_write(sensor, address, reg_contents);
+ if (retval == 1)
+ return 0;
+ else if (retval == 0)
+ return -EINVAL; /* TODO: What should this be? */
+ else
+ return retval;
+}
+EXPORT_SYMBOL(rmi_set_bit_field);
+
+bool rmi_polling_required(struct rmi_sensor_driver *sensor)
+{
+ return sensor->polling_required;
+}
+EXPORT_SYMBOL(rmi_polling_required);
+
+/** Functions can call this in order to dispatch IRQs. */
+void dispatchIRQs(struct rmi_sensor_driver *sensor, unsigned int irqStatus)
+{
+ struct rmi_function_info *functionInfo;
+
+ list_for_each_entry(functionInfo, &sensor->functions, link) {
+ if ((functionInfo->interruptMask & irqStatus)) {
+ if (functionInfo->function_device->
+ rmi_funcs->inthandler) {
+ /* Call the functions interrupt handler function. */
+ functionInfo->function_device->rmi_funcs->
+ inthandler(functionInfo,
+ (functionInfo->interruptMask & irqStatus));
+ }
+ }
+ }
+}
+
+/**
+ * This is the function we pass to the RMI4 subsystem so we can be notified
+ * when attention is required. It may be called in interrupt context.
+ */
+static void attention(struct rmi_phys_driver *physdrvr, int instance)
+{
+ /* All we have to do is schedule work. */
+
+ /* TODO: It's possible that workIsReady is not really needed anymore.
+ * Investigate this to see if the race condition between setting up
+ * the work and enabling the interrupt still exists.
+ */
+ if (physdrvr->sensor->workIsReady) {
+ schedule_work(&(physdrvr->sensor->work));
+ } else {
+ /* Got an interrupt but we're not ready so enable the irq
+ * so it doesn't get hung up
+ */
+ printk(KERN_DEBUG "%s: Work not initialized yet -"
+ "enabling irqs.\n", __func__);
+ enable_irq(physdrvr->irq);
+ }
+}
+
+/**
+ * This notifies any interested functions that there
+ * is an Attention interrupt. The interested functions should take
+ * appropriate
+ * actions (such as reading the interrupt status register and dispatching any
+ * appropriate RMI4 interrupts).
+ */
+void attn_notify(struct rmi_sensor_driver *sensor)
+{
+ struct rmi_function_info *functionInfo;
+
+ /* check each function that has data sources and if the interrupt for
+ * that triggered then call that RMI4 functions report() function to
+ * gather data and report it to the input subsystem
+ */
+ list_for_each_entry(functionInfo, &sensor->functions, link) {
+ if (functionInfo->function_device &&
+ functionInfo->function_device->rmi_funcs->attention)
+ functionInfo->function_device->
+ rmi_funcs->attention(functionInfo);
+ }
+}
+
+/* This is the worker function - for now it simply has to call attn_notify.
+ * This work should be scheduled whenever an ATTN interrupt is asserted by
+ * the touch sensor.
+ * We then call attn_notify to dispatch notification of the ATTN interrupt
+ * to all
+ * interested functions. After all the attention handling functions
+ * have returned, it is presumed safe to re-enable the Attention interrupt.
+ */
+static void sensor_work_func(struct work_struct *work)
+{
+ struct rmi_sensor_driver *sensor = container_of(work,
+ struct rmi_sensor_driver, work);
+
+ attn_notify(sensor);
+
+ /* we only need to enable the irq if doing interrupts */
+ if (!rmi_polling_required(sensor))
+ enable_irq(sensor->rpd->irq);
+}
+
+/* This is the timer function for polling - it simply has to schedule work
+ * and restart the timer. */
+static enum hrtimer_restart sensor_poll_timer_func(struct hrtimer *timer)
+{
+ struct rmi_sensor_driver *sensor = container_of(timer,
+ struct rmi_sensor_driver, timer);
+
+ schedule_work(&sensor->work);
+ hrtimer_start(&sensor->timer, ktime_set(0, polltime),
+ HRTIMER_MODE_REL);
+ return HRTIMER_NORESTART;
+}
+
+/* This is the probe function passed to the RMI4 subsystem that gives us a
+ * chance to recognize an RMI4 device. In this case, we're looking for
+ * Synaptics devices that have data sources - such as touch screens, buttons,
+ * etc.
+ *
+ * TODO: Well, it used to do this. I'm not sure it's required any more.
+ */
+static int probe(struct rmi_sensor_driver *sensor)
+{
+ struct rmi_phys_driver *rpd;
+
+ rpd = sensor->rpd;
+
+ if (!rpd) {
+ printk(KERN_ERR "%s: Invalid rmi physical driver - null ptr:"
+ "%p\n", __func__, rpd);
+ return 0;
+ }
+
+ return 1;
+}
+
+static void config(struct rmi_sensor_driver *sensor)
+{
+ /* For each data source we had detected print info and set up interrupts
+ or polling. */
+ struct rmi_function_info *functionInfo;
+ struct rmi_phys_driver *rpd;
+
+ rpd = sensor->rpd; /* get ptr to rmi_physical_driver from app */
+
+ list_for_each_entry(functionInfo, &sensor->functions, link) {
+ /* Get and print some info about the data sources... */
+ struct rmi_functions *fn;
+ bool found = false;
+ /* check if function number matches - if so call that
+ config function */
+ fn = rmi_find_function(functionInfo->functionNum);
+ if (fn) {
+ found = true;
+
+ if (fn->config) {
+ fn->config(functionInfo);
+ } else {
+ /* the developer did not add in the
+ pointer to the config function into
+ rmi4_supported_data_src_functions */
+ printk(KERN_ERR
+ "%s: no config function for "
+ "function 0x%x\n",
+ __func__, functionInfo->functionNum);
+ break;
+ }
+ }
+
+ if (!found) {
+ /* if no support found for this RMI4 function
+ it means the developer did not add the
+ appropriate function pointer list into the
+ rmi4_supported_data_src_functions array and/or
+ did not bump up the number of supported RMI4
+ functions in rmi.h as required */
+ printk(KERN_ERR "%s: could not find support "
+ "for function 0x%x\n",
+ __func__, functionInfo->functionNum);
+ }
+ }
+
+ /* This will handle interrupts on the ATTN line (interrupt driven)
+ * or will be called every poll interval (when we're not interrupt
+ * driven).
+ */
+ INIT_WORK(&sensor->work, sensor_work_func);
+ sensor->workIsReady = true;
+
+ if (rmi_polling_required(sensor)) {
+ /* We're polling driven, so set up the polling timer
+ and timer function. */
+ hrtimer_init(&sensor->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ sensor->timer.function = sensor_poll_timer_func;
+ hrtimer_start(&sensor->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+ }
+}
+
+/** Just a stub for now.
+ */
+static int rmi_sensor_suspend(struct device *dev, pm_message_t state)
+{
+ printk(KERN_INFO "%s: sensor suspend called.", __func__);
+ return 0;
+}
+
+/** Just a stub for now.
+ */
+static int rmi_sensor_resume(struct device *dev)
+{
+ printk(KERN_INFO "%s: sensor resume called.", __func__);
+ return 0;
+}
+
+/*
+ * This method is called, whenever a new sensor device is added for the rmi
+ * bus.
+ *
+ * It will scan the devices PDT to determine the supported functions
+ * and create a new function device for each of these. It will read
+ * the query, control, command and data regsiters for the function
+ * to be used for each newly created function device.
+ *
+ * The sensor device is then bound to every function it supports.
+ *
+ */
+int rmi_sensor_register_functions(struct rmi_sensor_driver *sensor)
+{
+ struct rmi_function_device *function;
+ unsigned int interruptRegisterCount;
+ struct rmi_phys_driver *rpd;
+ int i;
+ unsigned char interruptCount;
+ struct rmi_function_info *functionInfo;
+ struct rmi_function_descriptor rmi_fd;
+ struct rmi_functions *fn;
+ int retval;
+
+ pr_debug("%s: Registering sensor functions\n", __func__);
+
+ retval = 0;
+
+ /* Scan device for functions that may be supported */
+ {
+ pr_debug("%s: Scanning sensor for Functions:\n", __func__);
+
+ interruptCount = 0;
+ rpd = sensor->rpd;
+
+ /* Read the Page Descriptor Table to determine what functions
+ * are present */
+
+ printk(KERN_DEBUG "%s: Scanning page descriptors.", __func__);
+ for (i = PDT_START_SCAN_LOCATION;
+ i >= PDT_END_SCAN_LOCATION;
+ i -= PDT_ENTRY_SIZE) {
+ printk(KERN_DEBUG "%s: Reading page descriptor 0x%02x", __func__, i);
+ retval = rpd->read_multiple(rpd, i, (char *)&rmi_fd,
+ sizeof(rmi_fd));
+ if (!retval) {
+ functionInfo = NULL;
+
+ if (rmi_fd.functionNum != 0x00 && rmi_fd.functionNum != 0xff) {
+ printk(KERN_DEBUG "%s: F%02x - queries %02x commands %02x control %02x data %02x ints %02x", __func__, rmi_fd.functionNum, rmi_fd.queryBaseAddr, rmi_fd.commandBaseAddr, rmi_fd.controlBaseAddr, rmi_fd.dataBaseAddr, rmi_fd.interruptSrcCnt);
+
+ if ((rmi_fd.functionNum & 0xff) == 0x01)
+ printk(KERN_DEBUG "%s: Fn $01 Found - RMI Device Control", __func__);
+
+ /* determine if the function is supported and if so
+ * then bind this function device to the sensor */
+ if (rmi_fd.interruptSrcCnt) {
+ functionInfo = kzalloc(sizeof(*functionInfo), GFP_KERNEL);
+ if (!functionInfo) {
+ printk(KERN_ERR "%s: could not allocate memory for function 0x%x.",
+ __func__, rmi_fd.functionNum);
+ retval = -ENOMEM;
+ goto exit_fail;
+ }
+ functionInfo->sensor = sensor;
+ functionInfo->functionNum = (rmi_fd.functionNum & 0xff);
+ INIT_LIST_HEAD(&functionInfo->link);
+ /* Get the ptr to the detect function based on
+ * the function number */
+ printk(KERN_DEBUG "%s: Checking for RMI function F%02x.", __func__, rmi_fd.functionNum);
+ fn = rmi_find_function(rmi_fd.functionNum);
+ if (fn) {
+ retval = fn->detect(functionInfo, &rmi_fd,
+ interruptCount);
+ if (retval)
+ printk(KERN_ERR "%s: Function detect for F%02x failed with %d.",
+ __func__, rmi_fd.functionNum, retval);
+
+ /* Create a function device and function driver for this Fn */
+ function = kzalloc(sizeof(*function), GFP_KERNEL);
+ if (!function) {
+ printk(KERN_ERR "%s: Error allocating memory for rmi_function_device.", __func__);
+ return -ENOMEM;
+ }
+
+ function->dev.parent = &sensor->sensor_device->dev;
+ function->dev.bus = sensor->sensor_device->dev.bus;
+ function->rmi_funcs = fn;
+ function->sensor = sensor;
+ function->rfi = functionInfo;
+ functionInfo->function_device = function;
+
+ /* Check if we have an interrupt mask of 0 and a non-NULL interrupt
+ handler function and print a debug message since we should never
+ have this.
+ */
+ if (functionInfo->interruptMask == 0 && fn->inthandler != NULL) {
+ printk(KERN_DEBUG "%s: Can't have a zero interrupt mask for function F%02x (which requires an interrupt handler).\n",
+ __func__, rmi_fd.functionNum);
+ }
+
+
+ /* Check if we have a non-zero interrupt mask and a NULL interrupt
+ handler function and print a debug message since we should never
+ have this.
+ */
+ if (functionInfo->interruptMask != 0 && fn->inthandler == NULL) {
+ printk(KERN_DEBUG "%s: Can't have a non-zero interrupt mask %d for function F%02x with a NULL inthandler fn.\n",
+ __func__, functionInfo->interruptMask, rmi_fd.functionNum);
+ }
+
+ /* Register the rmi function device */
+ retval = rmi_function_register_device(function, rmi_fd.functionNum);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed rmi_function_register_device.\n",
+ __func__);
+ return retval;
+ }
+ } else {
+ printk(KERN_ERR "%s: could not find support for function 0x%02X.\n",
+ __func__, rmi_fd.functionNum);
+ }
+ } else {
+ printk(KERN_DEBUG "%s: Found function F%02x - Ignored.\n", __func__, rmi_fd.functionNum & 0xff);
+ }
+
+ /* bump interrupt count for next iteration */
+ /* NOTE: The value 7 is reserved - for now, only bump up one for an interrupt count of 7 */
+ if ((rmi_fd.interruptSrcCnt & 0x7) == 0x7) {
+ interruptCount += 1;
+ } else {
+ interruptCount +=
+ (rmi_fd.interruptSrcCnt & 0x7);
+ }
+
+ /* link this function info to the RMI module infos list
+ of functions */
+ if (functionInfo == NULL) {
+ printk(KERN_DEBUG "%s: WTF? functionInfo is null here.", __func__);
+ } else {
+ printk(KERN_DEBUG "%s: Adding function F%02x with %d sources.\n",
+ __func__, functionInfo->functionNum, functionInfo->numSources);
+
+ mutex_lock(&rfi_mutex);
+ list_add_tail(&functionInfo->link,
+ &sensor->functions);
+ mutex_unlock(&rfi_mutex);
+ }
+
+ } else {
+ /* A zero or 0xff in the function number
+ signals the end of the PDT */
+ printk(KERN_DEBUG "%s: Found End of PDT\n",
+ __func__);
+ break;
+ }
+ } else {
+ /* failed to read next PDT entry - end PDT
+ scan - this may result in an incomplete set
+ of recognized functions - should probably
+ return an error but the driver may still be
+ viable for diagnostics and debugging so let's
+ let it continue. */
+ printk(KERN_ERR "%s: Read Error %d when reading next PDT entry - "
+ "ending PDT scan.\n",
+ __func__, retval);
+ break;
+ }
+ }
+ printk(KERN_DEBUG "%s: Done scanning.", __func__);
+
+ /* calculate the interrupt register count - used in the
+ ISR to read the correct number of interrupt registers */
+ interruptRegisterCount = (interruptCount + 7) / 8;
+ sensor->interruptRegisterCount = interruptRegisterCount; /* TODO: Is this needed by the sensor anymore? */
+ }
+
+ return 0;
+
+exit_fail:
+ return retval;
+}
+EXPORT_SYMBOL(rmi_sensor_register_functions);
+
+int rmi_sensor_register_device(struct rmi_sensor_device *dev, int index)
+{
+ int status;
+
+ printk(KERN_INFO "%s: Registering sensor device.\n", __func__);
+
+ /* make name - sensor00, sensor01, etc. */
+ dev_set_name(&dev->dev, "sensor%02d", index);
+ status = device_register(&dev->dev);
+
+ return status;
+}
+EXPORT_SYMBOL(rmi_sensor_register_device);
+
+static void rmi_sensor_unregister_device(struct rmi_sensor_device *rmisensordev)
+{
+ printk(KERN_INFO "%s: Unregistering sensor device.\n", __func__);
+
+ device_unregister(&rmisensordev->dev);
+}
+EXPORT_SYMBOL(rmi_sensor_unregister_device);
+
+int rmi_sensor_register_driver(struct rmi_sensor_driver *driver)
+{
+ static int index;
+ int ret;
+ char *drvrname;
+
+ driver->workIsReady = false;
+
+ printk(KERN_INFO "%s: Registering sensor driver.\n", __func__);
+ driver->dispatchIRQs = dispatchIRQs;
+ driver->attention = attention;
+ driver->config = config;
+ driver->probe = probe;
+
+ /* assign the bus type for this driver to be rmi bus */
+ driver->drv.bus = &rmi_bus_type;
+ driver->drv.suspend = rmi_sensor_suspend;
+ driver->drv.resume = rmi_sensor_resume;
+ /* Create a function device and function driver for this Fn */
+ drvrname = kzalloc(sizeof(sensorname) + 4, GFP_KERNEL);
+ if (!drvrname) {
+ printk(KERN_ERR "%s: Error allocating memeory for rmi_sensor_driver name.\n", __func__);
+ return -ENOMEM;
+ }
+ sprintf(drvrname, "sensor%02d", index++);
+
+ driver->drv.name = drvrname;
+ driver->module = driver->drv.owner;
+
+ /* register the sensor driver */
+ ret = driver_register(&driver->drv);
+ if (ret) {
+ printk(KERN_ERR "%s: Failed driver_register %d\n",
+ __func__, ret);
+ goto exit_fail;
+ }
+
+ /* register the functions on the sensor */
+ ret = rmi_sensor_register_functions(driver);
+ if (ret) {
+ printk(KERN_ERR "%s: Failed rmi_sensor_register_functions %d\n",
+ __func__, ret);
+ }
+
+ /* configure the sensor - enable interrupts for each function, init work, set polling timer or adjust report rate, etc. */
+ config(driver);
+
+ printk(KERN_DEBUG "%s: sensor driver registration completed.", __func__);
+
+exit_fail:
+ return ret;
+}
+EXPORT_SYMBOL(rmi_sensor_register_driver);
+
+static void rmi_sensor_unregister_driver(struct rmi_sensor_driver *driver)
+{
+ printk(KERN_DEBUG "%s: Unregistering sensor driver.\n", __func__);
+
+ /* Stop the polling timer if doing polling */
+ if (rmi_polling_required(driver))
+ hrtimer_cancel(&driver->timer);
+
+ flush_scheduled_work(); /* Make sure all scheduled work is stopped */
+
+ driver_unregister(&driver->drv);
+}
+EXPORT_SYMBOL(rmi_sensor_unregister_driver);
+
+
+static int __init rmi_sensor_init(void)
+{
+ printk(KERN_DEBUG "%s: RMI Sensor Init\n", __func__);
+ return 0;
+}
+
+static void __exit rmi_sensor_exit(void)
+{
+ printk(KERN_DEBUG "%s: RMI Sensor Driver Exit\n", __func__);
+ flush_scheduled_work(); /* Make sure all scheduled work is stopped */
+}
+
+
+module_init(rmi_sensor_init);
+module_exit(rmi_sensor_exit);
+
+MODULE_AUTHOR("Synaptics, Inc.");
+MODULE_DESCRIPTION("RMI4 Sensor Driver");
+MODULE_LICENSE("GPL");