* [PATCH 0/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
@ 2011-03-30 0:50 Christopher Heiny
2011-03-30 0:50 ` [PATCH 1/3] " Christopher Heiny
` (2 more replies)
0 siblings, 3 replies; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 0:50 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: Jean Delvare, Linux Kernel, Linux Input, Christopher Heiny,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
This patch implements a driver supporting Synaptics ClearPad and other
touchscreens that use the RMI4 protocol, as defined here:
http://www.synaptics.com/sites/default/files/511-000136-01_revD.pdf
This patch is against the v2.6.38 tag of Linus' kernel tree, commit
521cb40b0c44418a4fd36dc633f575813d59a43d. Note that previous patches
were against the synaptics-rmi4 branch of Dmitry Torokhov's input
tree. At Dmitry's request, we have switched the base for our work
to v2.6.38 - this should make it easier for people to pick up and
test this and future patches.
I2C functionality was previously ACK'ed by Jean Delvare on 2010/05/29.
SPI code is included, but not ready for prime time yet.
This patch completely supersedes the previous patch of 2011/03/01. In addition
to benefitting from more thorough review and testing, this version of the
driver includes the following:
- preliminary implementation of rmi_f11 relative motion support
- support for RMI4 Function 19 (capacitive buttons)
- fixes for a kernel panic in rmi_f34.c configuration
- additional sysfs parameters, particularly for rmi_f11 (2D pointing)
- major restructuring of platformdata to (hopefully) simplify its
use while also allowing more operating parameters to be specified
via the platformdata.
- deletion of more legacy code and behavior
This patch supports a system having one or more RMI sensors attached to it.
Most devices have just a single touch sensor, but some have more than one.
An example is the Fuse concept phone, which has 4 RMI sensors in it).
Each sensor implements a number of RMI4 functions, which are best represented
as devices on the bus.
The patch is divide into three parts:
1/3 - the core of the driver, implementing the logical rmi_bus and
access to the physical bus (rmi_i2c and rmi_spi).
2/3 - the sensor and function implementation.
3/3 - Makefile and Kconfig
The driver core manages the sensors on a device via the rmi bus (/sys/bus/rmi),
handles interfunction communications (mostly IRQ notifications from F01 to
other functions), and proxies register read/write requests to the appropriate
physical layer for a given sensor.
Individual sensors are presented on the bus as /sys/bus/rmi/devices/sensor00,
/sys/bus/rmi/devices/sensor01/, and so on.
Functions for each sensor are presented as devices next to that sensor, for
example /sys/bus/rmi/devices/sensor00f01, /sys/bus/rmi/devices/sensor00f11,
and so on.
Sensor driver instances are attached to the bus using the kernel device discovery
mechanism. A future release will do the same for function driver instances,
but for now we use an ad hoc mechanism to match functions to sensors.
We chose this approach because almost all RMI4 functions are independent
of one another. The sole exception is F01, and its primary interaction
with other functions is to notify them of the need to read or write data
from or to the sensor. In the long term, this will allow 3rd parties to
implement additional RMI functions in a modular fashion, without having
to modify the core driver implementation or the implementation of unrelated
functions.
Comments and other feedback on this driver are welcomed.
Bill Manson
Allie Xiong
Christopher Heiny
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Cc: Joeri de Gram <j.de.gram@gmail.com>
---
^ permalink raw reply [flat|nested] 10+ messages in thread
* [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 0:50 [PATCH 0/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver Christopher Heiny
@ 2011-03-30 0:50 ` Christopher Heiny
2011-03-30 8:02 ` Wolfram Sang
2011-03-30 11:46 ` Joerie de Gram
2011-03-30 0:50 ` [PATCH 2/3] " Christopher Heiny
2011-03-30 0:50 ` [PATCH 3/3] " Christopher Heiny
2 siblings, 2 replies; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 0:50 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: Jean Delvare, Linux Kernel, Linux Input, Christopher Heiny,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
Driver for Synaptics touchscreens using RMI4 protocol.
Signed-off-by: William Manson <wmanson@synaptics.com>
Signed-off-by: Allie Xiong <axiong@synaptics.com>
Signed-off-by: Christopher Heiny <cheiny@synaptics.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Cc: Joeri de Gram <j.de.gram@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
---
diff --git a/drivers/input/touchscreen/rmi_bus.c b/drivers/input/touchscreen/rmi_bus.c
new file mode 100644
index 0000000..878784b
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_bus.c
@@ -0,0 +1,391 @@
+/**
+ * Synaptics Register Mapped Interface (RMI4) - RMI Bus Module.
+ * Copyright (C) 2007 - 2011, Synaptics Incorporated
+ *
+ * Impliments "rmi" bus per Documentation/driver-model/bus.txt
+ *
+ * This protocol is layered as follows.
+ *
+ *
+ *
+ * +-------+ +-------+ +-------+ +--------+
+ * | Fn32 | | Fn11| | Fn19 | | Fn11 | Devices/Functions
+ * *---|---+ +--|----+ +----|--+ +----|---* (2D, cap. btns, etc.)
+ * | | | |
+ * +----------------+ +----------------+
+ * | Sensor0 | | Sensor1 | Sensors Dev/Drivers
+ * +----------------+ +----------------+ (a sensor has one or
+ * | | more functions)
+ * | |
+ * +----------------------------------------+
+ * | |
+ * | RMI4 Bus | RMI Bus Layer
+ * | (this file) |
+ * *--|-----|------|--------------|---------*
+ * | | | |
+ * | | | |
+ * +-----+-----+-------+--------------------+
+ * | I2C | SPI | SMBus | etc. | Physical Layer
+ * +-----+-----+-------+--------------------+
+ *
+ */
+/*
+ * 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 busname[] = "rmi";
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/hrtimer.h>
+#include <linux/list.h>
+#include <linux/miscdevice.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+#include <linux/slab.h>
+
+#include "rmi_drvr.h"
+#include "rmi.h"
+#include "rmi_bus.h"
+#include "rmi_platformdata.h"
+#include "rmi_sensor.h"
+#include "rmi_function.h"
+
+/* list of physical drivers - i2c, spi, etc. */
+static LIST_HEAD(phys_drivers);
+static DEFINE_MUTEX(phys_drivers_mutex);
+
+/* list of sensors found on a physical bus (i2c, smi, etc.)*/
+static LIST_HEAD(sensor_drivers);
+static DEFINE_MUTEX(sensor_drivers_mutex);
+static LIST_HEAD(sensor_devices);
+static DEFINE_MUTEX(sensor_devices_mutex);
+
+#define PDT_START_SCAN_LOCATION 0x00E9
+#define PDT_END_SCAN_LOCATION 0x0005
+#define PDT_ENTRY_SIZE 0x0006
+
+/* definitions for rmi bus */
+struct device rmi_bus_device;
+
+struct bus_type rmi_bus_type;
+EXPORT_SYMBOL(rmi_bus_type);
+
+
+/*
+ * This method is called, perhaps multiple times, whenever a new device or driver
+ * is added for this bus. It should return a nonzero value if the given device can be
+ * handled by the given driver. This function must be handled at the bus level,
+ * because that is where the proper logic exists; the core kernel cannot know how
+ * to match devices and drivers for every possible bus type
+ * The match function does a comparison between the hardware ID provided by
+ * the device itself and the IDs supported by the driver.
+ *
+ */
+static int rmi_bus_match(struct device *dev, struct device_driver *driver)
+{
+ printk(KERN_DEBUG "%s: Matching %s for rmi bus.\n", __func__, dev->bus->name);
+ return !strncmp(dev->bus->name, driver->name, strlen(driver->name));
+}
+
+/** Stub for now.
+ */
+static int rmi_bus_suspend(struct device *dev, pm_message_t state)
+{
+ printk(KERN_INFO "%s: RMI bus suspending.", __func__);
+ return 0;
+}
+
+/** Stub for now.
+ */
+static int rmi_bus_resume(struct device *dev)
+{
+ printk(KERN_INFO "%s: RMI bus resuming.", __func__);
+ return 0;
+}
+
+/*
+ * This method is called, whenever a new device is added for this bus.
+ * It will scan the devices PDT to get the function $01 query, control,
+ * command and data regsiters so that it can create a function $01 (sensor)
+ * device for the new physical device. It also caches the PDT for later use by
+ * other functions that are created for the device. For example, if a function
+ * $11 is found it will need the query, control, command and data register
+ * addresses for that function. The new function could re-scan the PDT but
+ * since it is being done here we can cache it and keep it around.
+ *
+ * TODO: If the device is reset or some action takes place that would invalidate
+ * the PDT - such as a reflash of the firmware - then the device should be re-added
+ * to the bus and the PDT re-scanned and cached.
+ *
+ */
+int rmi_register_sensor(struct rmi_phys_driver *rpd, struct rmi_functiondata_list *perfunctiondata)
+{
+ int i;
+ struct rmi_sensor_device *rmi_sensor_dev;
+ struct rmi_function_info *rfi;
+ struct rmi_function_descriptor rmi_fd;
+ int retval;
+ static int index;
+
+ /* Make sure we have a read, write, read_multiple, write_multiple
+ function pointers from whatever physical layer the sensor is on.
+ */
+ if (!rpd->name) {
+ printk(KERN_ERR "%s: Physical driver must specify a name\n",
+ __func__);
+ return -EINVAL;
+ }
+ if (!rpd->write) {
+ printk(KERN_ERR
+ "%s: Physical driver %s must specify a writer.\n",
+ __func__, rpd->name);
+ return -EINVAL;
+ }
+ if (!rpd->read) {
+ printk(KERN_ERR
+ "%s: Physical driver %s must specify a reader.\n",
+ __func__, rpd->name);
+ return -EINVAL;
+ }
+ if (!rpd->write_multiple) {
+ printk(KERN_ERR "%s: Physical driver %s must specify a "
+ "multiple writer.\n",
+ __func__, rpd->name);
+ return -EINVAL;
+ }
+ if (!rpd->read_multiple) {
+ printk(KERN_ERR "%s: Physical driver %s must specify a "
+ "multiple reader.\n",
+ __func__, rpd->name);
+ return -EINVAL;
+ }
+
+ /* Get some information from the device */
+ printk(KERN_INFO "%s: Identifying sensors by presence of F01...\n", __func__);
+
+ rmi_sensor_dev = NULL;
+
+ /* Scan the page descriptor table until we find F01. If we find that,
+ * we assume that we can reliably talk to this sensor.
+ */
+ for (i = PDT_START_SCAN_LOCATION; /* Register the rmi sensor driver */
+ i >= PDT_END_SCAN_LOCATION;
+ i -= PDT_ENTRY_SIZE) {
+ retval = rpd->read_multiple(rpd, i, (char *)&rmi_fd,
+ sizeof(rmi_fd));
+ if (!retval) {
+ rfi = NULL;
+
+ if (rmi_fd.functionNum != 0x00 && rmi_fd.functionNum != 0xff) {
+ if ((rmi_fd.functionNum & 0xff) == 0x01) {
+ printk(KERN_INFO "%s: F01 Found - RMI Device Control\n", __func__);
+
+ /* This appears to be a valid device, so create a sensor
+ * device and sensor driver for it. */
+ rmi_sensor_dev = kzalloc(sizeof(*rmi_sensor_dev), GFP_KERNEL);
+ if (!rmi_sensor_dev) {
+ printk(KERN_ERR "%s: Error allocating memory for rmi_sensor_device\n", __func__);
+ return -ENOMEM;
+ }
+ rmi_sensor_dev->dev.bus = &rmi_bus_type;
+
+ retval = rmi_sensor_register_device(rmi_sensor_dev, index++);
+ if (retval < 0) {
+ printk(KERN_ERR "%s: Error %d registering sensor device\n", __func__, retval);
+ goto exit_fail;
+ }
+
+ rmi_sensor_dev->driver = kzalloc(sizeof(struct rmi_sensor_driver), GFP_KERNEL);
+ if (!rmi_sensor_dev->driver) {
+ printk(KERN_ERR "%s: Error allocating memory for rmi_sensor_driver\n", __func__);
+ return -ENOMEM;
+ }
+ rmi_sensor_dev->driver->sensor_device = rmi_sensor_dev;
+ rmi_sensor_dev->driver->polling_required = rpd->polling_required;
+ rmi_sensor_dev->driver->rpd = rpd;
+ rmi_sensor_dev->driver->perfunctiondata = perfunctiondata;
+ INIT_LIST_HEAD(&rmi_sensor_dev->driver->functions);
+
+ retval = rmi_sensor_register_driver(rmi_sensor_dev->driver);
+ if (retval < 0) {
+ printk(KERN_ERR "%s: Error %d registering sensor driver\n", __func__, retval);
+ goto exit_fail;
+ }
+
+ /* link the attention fn in the rpd to the sensor attn fn */
+ printk(KERN_DEBUG "%s: linking sensor driver attention fn to rmi_phys_driver attention fn.\n", __func__);
+ rpd->sensor = rmi_sensor_dev->driver;
+ rpd->attention = rmi_sensor_dev->driver->attention;
+
+ /* Add it into the list of sensors on the rmi bus */
+ mutex_lock(&sensor_devices_mutex);
+ list_add_tail(&rmi_sensor_dev->sensors, &sensor_devices);
+ mutex_unlock(&sensor_devices_mutex);
+
+ /* All done with this sensor, fall out of PDT scan loop. */
+ break;
+ } else {
+ /* Just print out the function found for now */
+ printk(KERN_INFO "%s: Found Function %02x - Ignored.\n", __func__, rmi_fd.functionNum & 0xff);
+ }
+ } else {
+ /* A zero or 0xff in the function number
+ signals the end of the PDT */
+ pr_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;
+ }
+ }
+
+ /* If we actually found a sensor, keep it around. */
+ if (rmi_sensor_dev) {
+ /* Add physical driver struct to list */
+ mutex_lock(&phys_drivers_mutex);
+ list_add_tail(&rpd->drivers, &phys_drivers);
+ mutex_unlock(&phys_drivers_mutex);
+ }
+
+ printk(KERN_DEBUG "%s: Registered sensor drivers.\n", __func__);
+
+ return 0;
+
+exit_fail:
+ return retval;
+}
+EXPORT_SYMBOL(rmi_register_sensor);
+
+int rmi_unregister_sensors(struct rmi_phys_driver *rpd)
+{
+ if (rpd->sensor) {
+ printk(KERN_WARNING "%s: WARNING: unregister of %s while %s still attached\n",
+ __func__, rpd->name, rpd->sensor->drv.name);
+ }
+
+ pr_debug("%s: Unregistering sensor drivers %s\n", __func__, rpd->name);
+
+ mutex_lock(&sensor_drivers_mutex);
+ list_del(&rpd->sensor->sensor_drivers);
+ mutex_unlock(&sensor_drivers_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL(rmi_unregister_sensors);
+
+
+static void rmi_bus_dev_release(struct device *dev)
+{
+ printk(KERN_DEBUG "rmi bus device release\n");
+}
+
+
+int rmi_register_bus_device(struct device *rmibusdev)
+{
+ printk(KERN_DEBUG "%s: Registering RMI4 bus device.\n", __func__);
+
+ /* Here, we simply fill in some of the embedded device structure fields
+ (which individual drivers should not need to know about), and register
+ the device with the driver core. */
+
+ rmibusdev->bus = &rmi_bus_type;
+ rmibusdev->parent = &rmi_bus_device;
+ rmibusdev->release = rmi_bus_dev_release;
+ dev_set_name(rmibusdev, "rmi");
+
+ /* If we wanted to add bus-specific attributes to the device, we could do so here.*/
+
+ return device_register(rmibusdev);
+}
+EXPORT_SYMBOL(rmi_register_bus_device);
+
+void rmi_unregister_bus_device(struct device *rmibusdev)
+{
+ printk(KERN_DEBUG "%s: Unregistering bus device.\n", __func__);
+
+ device_unregister(rmibusdev);
+}
+EXPORT_SYMBOL(rmi_unregister_bus_device);
+
+static int __init rmi_bus_init(void)
+{
+ int status;
+
+ status = 0;
+
+ printk(KERN_INFO "%s: RMI Bus Driver Init\n", __func__);
+
+ /* Register the rmi bus */
+ rmi_bus_type.name = busname;
+ rmi_bus_type.match = rmi_bus_match;
+ rmi_bus_type.suspend = rmi_bus_suspend;
+ rmi_bus_type.resume = rmi_bus_resume;
+ status = bus_register(&rmi_bus_type);
+ if (status < 0) {
+ printk(KERN_ERR "%s: Error %d registering the rmi bus\n", __func__, status);
+ goto err_exit;
+ }
+ printk(KERN_DEBUG "%s: registered bus.", __func__);
+
+#if 0
+ /** This doesn't seem to be required any more. It worked OK in Froyo,
+ * but breaks in Gingerbread */
+ /* Register the rmi bus device - "rmi". There is only one rmi bus device. */
+ status = rmi_register_bus_device(&rmi_bus_device);
+ if (status < 0) {
+ printk(KERN_ERR "%s: Error %d registering rmi bus device\n", __func__, status);
+ bus_unregister(&rmi_bus_type);
+ goto err_exit;
+ }
+ printk(KERN_DEBUG "%s: Registered bus device.", __func__);
+#endif
+
+ return 0;
+err_exit:
+ return status;
+}
+
+static void __exit rmi_bus_exit(void)
+{
+ printk(KERN_DEBUG "%s: RMI Bus Driver Exit\n", __func__);
+
+ /* Unregister the rmi bus device - "rmi". There is only one rmi bus device. */
+ rmi_unregister_bus_device(&rmi_bus_device);
+
+ /* Unregister the rmi bus */
+ bus_unregister(&rmi_bus_type);
+}
+
+
+module_init(rmi_bus_init);
+module_exit(rmi_bus_exit);
+
+MODULE_AUTHOR("Synaptics, Inc.");
+MODULE_DESCRIPTION("RMI4 Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/rmi_bus.h b/drivers/input/touchscreen/rmi_bus.h
new file mode 100644
index 0000000..70c6b68
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_bus.h
@@ -0,0 +1,33 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) - RMI Bus Module Header.
+ * Copyright (C) 2007 - 2010, 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.
+ *
+ *#############################################################################
+ */
+
+#ifndef _RMI_BUS_H
+#define _RMI_BUS_H
+
+
+extern struct bus_type rmi_bus_type;
+
+#endif
+
diff --git a/drivers/input/touchscreen/rmi_i2c.c b/drivers/input/touchscreen/rmi_i2c.c
new file mode 100644
index 0000000..4fc0665
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_i2c.c
@@ -0,0 +1,625 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) I2C Physical Layer Driver.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include "rmi_i2c.h"
+#include "rmi_drvr.h"
+
+
+#define DRIVER_NAME "rmi4_ts"
+
+#define DEVICE_NAME "rmi4_ts"
+
+/* Used to lock access to the page address.*/
+/* TODO: for multiple device support will need a per-device mutex */
+static DEFINE_MUTEX(page_mutex);
+
+
+static const struct i2c_device_id rmi_i2c_id_table[] = {
+ { DEVICE_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, rmi_i2c_id_table);
+
+
+/* Used to count the number of I2C modules we get.
+ */
+static int device_count;
+
+
+/*
+ * This is the data kept on a per instance (client) basis. This data is
+ * always accessible by using the container_of() macro of the various elements
+ * inside.
+ */
+struct instance_data {
+ int instance_no;
+ int irq;
+ struct rmi_phys_driver rmiphysdrvr;
+ struct i2c_client *i2cclient; /* pointer to i2c_client for later use in
+ read, write, read_multiple, etc. */
+ int page;
+};
+
+/*
+ * RMI devices have 16-bit addressing, but some of the physical
+ * implementations (like SMBus) only have 8-bit addressing. So RMI implements
+ * a page address at 0xff of every page so we can reliable page addresses
+ * every 256 registers. This function sets the page.
+ *
+ * The page_mutex lock must be held when this function is entered.
+ *
+ * param[in] id - The pointer to the instance_data struct
+ * param[in] page - The new page address.
+ * returns zero on success, non-zero on failure.
+ */
+int
+rmi_set_page(struct instance_data *instancedata, unsigned int page)
+{
+ char txbuf[2];
+ int retval;
+ txbuf[0] = 0xff;
+ txbuf[1] = page;
+ retval = i2c_master_send(instancedata->i2cclient, txbuf, 2);
+ if (retval != 2) {
+ dev_err(&instancedata->i2cclient->dev,
+ "%s: Set page fail: %d\n", __func__, retval);
+ } else {
+ retval = 0;
+ instancedata->page = page;
+ }
+ return retval;
+}
+
+/*
+ * Read a single register through i2c.
+ *
+ * param[in] pd - The pointer to the rmi_phys_driver struct
+ * param[in] address - The address at which to start the data read.
+ * param[out] valp - Pointer to the buffer where the data will be stored.
+ * returns xero upon success (with the byte read in valp), non-zero upon error.
+ */
+static int
+rmi_i2c_read(struct rmi_phys_driver *physdrvr, unsigned short address, char *valp)
+{
+ struct instance_data *instancedata =
+ container_of(physdrvr, struct instance_data, rmiphysdrvr);
+
+ char txbuf[2];
+ int retval = 0;
+ int retry_count = 0;
+
+ /* Can't have anyone else changing the page behind our backs */
+#if 0
+ mutex_lock(&page_mutex);
+
+ if (((address >> 8) & 0xff) != instancedata->page) {
+ /* Switch pages */
+ retval = rmi_set_page(instancedata, ((address >> 8) & 0xff));
+ if (retval)
+ goto exit;
+ }
+#endif
+
+retry:
+ txbuf[0] = address & 0xff;
+ retval = i2c_master_send(instancedata->i2cclient, txbuf, 1);
+
+ if (retval != 1) {
+ dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n",
+ __func__, retval);
+ goto exit;
+ }
+ retval = i2c_master_recv(instancedata->i2cclient, txbuf, 1);
+
+ if (retval != 1) {
+ if (++retry_count == 5) {
+ dev_err(&instancedata->i2cclient->dev,
+ "%s: Read of 0x%04x fail: %d\n",
+ __func__, address, retval);
+ } else {
+ mdelay(10);
+#if 0
+ rmi_set_page(instancedata, ((address >> 8) & 0xff));
+#endif
+ goto retry;
+ }
+ } else {
+ retval = 0;
+ *valp = txbuf[0];
+ }
+exit:
+
+#if 0
+ mutex_unlock(&page_mutex);
+#endif
+ return retval;
+}
+
+/*
+ * Same as rmi_i2c_read, except that multiple bytes are allowed to be read.
+ *
+ * param[in] pd - The pointer to the rmi_phys_driver struct
+ * param[in] address - The address at which to start the data read.
+ * param[out] valp - Pointer to the buffer where the data will be stored. This
+ * buffer must be at least size bytes long.
+ * param[in] size - The number of bytes to be read.
+ * returns zero upon success (with the byte read in valp), non-zero upon error.
+ *
+ */
+static int
+rmi_i2c_read_multiple(struct rmi_phys_driver *physdrvr, unsigned short address,
+ char *valp, int size)
+{
+ struct instance_data *instancedata =
+ container_of(physdrvr, struct instance_data, rmiphysdrvr);
+
+ char txbuf[2];
+ int retval = 0;
+ int retry_count = 0;
+
+#if 0
+ /* Can't have anyone else changing the page behind our backs */
+ mutex_lock(&page_mutex);
+
+ if (((address >> 8) & 0xff) != instancedata->page) {
+ /* Switch pages */
+ retval = rmi_set_page(instancedata, ((address >> 8) & 0xff));
+ if (retval)
+ goto exit;
+ }
+#endif
+
+retry:
+ txbuf[0] = address & 0xff;
+ retval = i2c_master_send(instancedata->i2cclient, txbuf, 1);
+
+ if (retval != 1) {
+ dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n",
+ __func__, retval);
+ goto exit;
+ }
+ retval = i2c_master_recv(instancedata->i2cclient, valp, size);
+
+ if (retval != size) {
+ if (++retry_count == 5) {
+ dev_err(&instancedata->i2cclient->dev,
+ "%s: Read of 0x%04x size %d fail: %d\n",
+ __func__, address, size, retval);
+ } else {
+ mdelay(10);
+#if 0
+ rmi_set_page(instancedata, ((address >> 8) & 0xff));
+#endif
+ goto retry;
+ }
+ } else {
+ retval = 0;
+ }
+exit:
+
+#if 0
+ mutex_unlock(&page_mutex);
+#endif
+ return retval;
+}
+
+
+/*
+ * Write a single register through i2c.
+ * You can write multiple registers at once, but I made the functions for that
+ * seperate for performance reasons. Writing multiple requires allocation and
+ * freeing.
+ *
+ * param[in] pd - The pointer to the rmi_phys_driver struct
+ * param[in] address - The address at which to start the write.
+ * param[in] data - The data to be written.
+ * returns one upon success, something else upon error.
+ */
+static int
+rmi_i2c_write(struct rmi_phys_driver *physdrvr, unsigned short address, char data)
+{
+ struct instance_data *instancedata =
+ container_of(physdrvr, struct instance_data, rmiphysdrvr);
+
+ unsigned char txbuf[2];
+ int retval = 0;
+
+#if 0
+ /* Can't have anyone else changing the page behind our backs */
+ mutex_lock(&page_mutex);
+
+ if (((address >> 8) & 0xff) != instancedata->page) {
+ /* Switch pages */
+ retval = rmi_set_page(instancedata, ((address >> 8) & 0xff));
+ if (retval)
+ goto exit;
+ }
+#endif
+
+ txbuf[0] = address & 0xff;
+ txbuf[1] = data;
+ retval = i2c_master_send(instancedata->i2cclient, txbuf, 2);
+
+ /* TODO: Add in retry on writes only in certian error return values */
+ if (retval != 2) {
+ dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n",
+ __func__, retval);
+ goto exit; /* Leave this in case we add code below */
+ }
+exit:
+
+#if 0
+ mutex_unlock(&page_mutex);
+#endif
+ return retval;
+}
+
+/*
+ * Write multiple registers.
+ *
+ * For fast writes of 16 bytes of less we will re-use a buffer on the stack.
+ * For larger writes (like for RMI reflashing) we will need to allocate a
+ * temp buffer.
+ *
+ * param[in] pd - The pointer to the rmi_phys_driver struct
+ * param[in] address - The address at which to start the write.
+ * param[in] valp - A pointer to a buffer containing the data to be written.
+ * param[in] size - The number of bytes to write.
+ * returns one upon success, something else upon error.
+ */
+static int
+rmi_i2c_write_multiple(struct rmi_phys_driver *physdrvr, unsigned short address,
+ char *valp, int size)
+{
+ struct instance_data *instancedata =
+ container_of(physdrvr, struct instance_data, rmiphysdrvr);
+
+ unsigned char *txbuf;
+ unsigned char txbuf_most[17]; /* Use this buffer for fast writes of 16
+ bytes or less. The first byte will
+ contain the address at which to start
+ the write. */
+ int retval = 0;
+ int i;
+
+ if (size < sizeof(txbuf_most)) {
+ /* Avoid an allocation if we can help it. */
+ txbuf = txbuf_most;
+ } else {
+ /* over 16 bytes write we'll need to allocate a temp buffer */
+ txbuf = kzalloc(size + 1, GFP_KERNEL);
+ if (!txbuf)
+ return -ENOMEM;
+ }
+
+ /* Yes, it stinks here that we have to copy the buffer */
+ /* We copy from valp to txbuf leaving
+ the first location open for the address */
+ for (i = 0; i < size; i++)
+ txbuf[i + 1] = valp[i];
+
+#if 0
+ /* Can't have anyone else changing the page behind our backs */
+ mutex_lock(&page_mutex);
+
+ if (((address >> 8) & 0xff) != instancedata->page) {
+ /* Switch pages */
+ retval = rmi_set_page(instancedata, ((address >> 8) & 0xff));
+ if (retval)
+ goto exit;
+ }
+#endif
+
+ txbuf[0] = address & 0xff; /* put the address in the first byte */
+ retval = i2c_master_send(instancedata->i2cclient, txbuf, size + 1);
+
+ /* TODO: Add in retyr on writes only in certian error return values */
+ if (retval != 1) {
+ dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n",
+ __func__, retval);
+ goto exit;
+ }
+exit:
+
+#if 0
+ mutex_unlock(&page_mutex);
+#endif
+ if (txbuf != txbuf_most)
+ kfree(txbuf);
+ return retval;
+}
+
+/*
+ * This is the Interrupt Service Routine. It just notifies the application
+ * layer that attention is required.
+ */
+static irqreturn_t
+i2c_attn_isr(int irq, void *info)
+{
+ struct instance_data *instancedata = info;
+
+ disable_irq_nosync(instancedata->irq);
+
+ if (instancedata->rmiphysdrvr.attention) {
+ instancedata->rmiphysdrvr.attention(&instancedata->rmiphysdrvr,
+ instancedata->instance_no);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/* The Driver probe function - will allocate and initialize the instance
+ * data and request the irq and set the instance data as the clients
+ * platform data then register the physical driver which will do a scan of
+ * the RMI4 Physical Device Table and enumerate any RMI4 functions that
+ * have data sources associated with them.
+ */
+static int
+rmi_i2c_probe(struct i2c_client *client, const struct i2c_device_id *dev_id)
+{
+
+ struct instance_data *instancedata;
+ int retval = 0;
+ int irqtype = 0;
+
+ struct rmi_i2c_platformdata *platformdata;
+
+ if (client == NULL) {
+ printk(KERN_ERR "%s: Invalid NULL client received.", __func__);
+ return -EINVAL;
+ }
+
+ printk(KERN_INFO "%s: Probing i2c RMI device, addr: 0x%02x", __func__, client->addr);
+
+ /* Egregiously horrible delay here that seems to prevent I2C disasters on
+ * certain broken dev systems. In most cases, you can safely remove this.
+ * TODO: convert this to a parameter than can be spec'ed at boot time,
+ * so not everyone needs to suffer.
+ */
+ mdelay(1000);
+
+ /* Allocate and initialize the instance data for this client */
+ instancedata = kzalloc(sizeof(*instancedata), GFP_KERNEL);
+ if (!instancedata) {
+ dev_err(&client->dev,
+ "%s: Out of memory trying to allocate instance_data.\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ instancedata->rmiphysdrvr.name = DRIVER_NAME;
+ instancedata->rmiphysdrvr.write = rmi_i2c_write;
+ instancedata->rmiphysdrvr.read = rmi_i2c_read;
+ instancedata->rmiphysdrvr.write_multiple = rmi_i2c_write_multiple;
+ instancedata->rmiphysdrvr.read_multiple = rmi_i2c_read_multiple;
+ instancedata->rmiphysdrvr.module = THIS_MODULE;
+
+ /* Set default to polling in case no matching platform data is located
+ for this device. We'll still work but in polling mode since we didn't
+ find any irq info */
+ instancedata->rmiphysdrvr.polling_required = true;
+
+ instancedata->page = 0xffff; /* Force a set page the first time */
+
+ /* cast to our struct rmi_i2c_platformdata so we know
+ the fields (see rmi_ic2.h) */
+ platformdata = client->dev.platform_data;
+ if (platformdata == NULL) {
+ printk(KERN_ERR "%s: CONFIGURATION ERROR - platform data is NULL.", __func__);
+ return -EINVAL;
+ }
+
+ printk(KERN_DEBUG "%s: sensor addr: 0x%02x irq: 0x%x type: %d",
+ __func__, platformdata->i2c_address, platformdata->irq, platformdata->irq_type);
+ if (client->addr != platformdata->i2c_address) {
+ printk(KERN_ERR "%s: CONFIGURATION ERROR - client I2C address 0x%02x doesn't match platform data address 0x%02x.", __func__, client->addr, platformdata->i2c_address);
+ return -EINVAL;
+ }
+
+ instancedata->instance_no = device_count++;
+
+ /* set the device name using the instance_no appended
+ to DEVICE_NAME to make a unique name */
+ dev_set_name(&client->dev,
+ "rmi4-i2c%d", instancedata->instance_no);
+
+ /* Determine if we need to poll (inefficient) or use interrupts.
+ */
+ if (platformdata->irq) {
+ instancedata->irq = platformdata->irq;
+ switch (platformdata->irq_type) {
+ case IORESOURCE_IRQ_HIGHEDGE:
+ irqtype = IRQF_TRIGGER_RISING;
+ break;
+ case IORESOURCE_IRQ_LOWEDGE:
+ irqtype = IRQF_TRIGGER_FALLING;
+ break;
+ case IORESOURCE_IRQ_HIGHLEVEL:
+ irqtype = IRQF_TRIGGER_HIGH;
+ break;
+ case IORESOURCE_IRQ_LOWLEVEL:
+ irqtype = IRQF_TRIGGER_LOW;
+ break;
+ default:
+ dev_warn(&client->dev,
+ "%s: Invalid IRQ flags in platform data.\n",
+ __func__);
+ kfree(instancedata);
+ return -ENXIO;
+ }
+
+ instancedata->rmiphysdrvr.polling_required = false;
+ instancedata->rmiphysdrvr.irq = instancedata->irq;
+
+ } else {
+ instancedata->rmiphysdrvr.polling_required = true;
+ dev_info(&client->dev,
+ "%s: No IRQ info given. Polling required.\n",
+ __func__);
+ }
+
+ /* Store the instance data in the i2c_client - we need to do this prior
+ * to calling register_physical_driver since it may use the read, write
+ * functions. If nothing was found then the id fields will be set to 0
+ * for the irq and the default will be set to polling required so we
+ * will still work but in polling mode. */
+ i2c_set_clientdata(client, instancedata);
+
+ /* Copy i2c_client pointer into instance_data's i2c_client pointer for
+ later use in rmi4_read, rmi4_write, etc. */
+ instancedata->i2cclient = client;
+
+ /* Register sensor drivers - this will call the detect function that
+ * will then scan the device and determine the supported RMI4 sensors
+ * and functions.
+ */
+ retval = rmi_register_sensor(&instancedata->rmiphysdrvr, platformdata->perfunctiondata);
+ if (retval) {
+ dev_err(&client->dev, "%s: Failed to Register %s sensor drivers\n",
+ __func__, instancedata->rmiphysdrvr.name);
+ i2c_set_clientdata(client, NULL);
+ kfree(instancedata);
+ return retval;
+ }
+
+ if (instancedata->rmiphysdrvr.polling_required == false) {
+ retval = request_irq(instancedata->irq, i2c_attn_isr,
+ irqtype, "rmi_i2c", instancedata);
+ if (retval) {
+ dev_err(&client->dev, "%s: failed to obtain IRQ %d. Result: %d.",
+ __func__, instancedata->irq, retval);
+ dev_info(&client->dev, "%s: Reverting to polling.\n", __func__);
+ instancedata->rmiphysdrvr.polling_required = true;
+ /* TODO: Need to revert back to polling - create and start timer, turn off interrupts for each fn */
+ } else {
+ dev_dbg(&client->dev, "%s: got irq.\n", __func__);
+ }
+ }
+
+ dev_dbg(&client->dev, "%s: Successfully registered %s sensor driver.\n",
+ __func__, instancedata->rmiphysdrvr.name);
+
+ printk(KERN_INFO "%s: Successfully registered %s sensor driver.\n", __func__, instancedata->rmiphysdrvr.name);
+
+ return retval;
+}
+
+/* The Driver remove function. We tear down the instance data and unregister
+ * the phys driver in this call.
+ */
+static int
+rmi_i2c_remove(struct i2c_client *client)
+{
+ struct instance_data *instancedata =
+ i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "%s: Unregistering phys driver %s\n", __func__,
+ instancedata->rmiphysdrvr.name);
+
+ rmi_unregister_sensors(&instancedata->rmiphysdrvr);
+
+ dev_dbg(&client->dev, "%s: Unregistered phys driver %s\n",
+ __func__, instancedata->rmiphysdrvr.name);
+
+ /* only free irq if we have an irq - otherwise the instance_data
+ will be 0 for that field */
+ if (instancedata->irq)
+ free_irq(instancedata->irq, instancedata);
+
+ kfree(instancedata);
+ dev_dbg(&client->dev, "%s: Remove successful\n", __func__);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int
+rmi_i2c_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+ /* Touch sleep mode */
+ return 0;
+}
+
+static int
+rmi_i2c_resume(struct i2c_client *client)
+{
+ /* Re-initialize upon resume */
+ return 0;
+}
+#else
+#define rmi_i2c_suspend NULL
+#define rmi_i2c_resume NULL
+#endif
+
+/*
+ * This structure tells the i2c subsystem about us.
+ *
+ * TODO: we should add .suspend and .resume fns.
+ *
+ */
+static struct i2c_driver rmi_i2c_driver = {
+ .probe = rmi_i2c_probe,
+ .remove = rmi_i2c_remove,
+ .suspend = rmi_i2c_suspend,
+ .resume = rmi_i2c_resume,
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
+ .id_table = rmi_i2c_id_table,
+};
+
+/*
+ * Register ourselves with i2c Chip Driver.
+ *
+ */
+static int __init rmi_phys_i2c_init(void)
+{
+ return i2c_add_driver(&rmi_i2c_driver);
+}
+
+/*
+ * Un-register ourselves from the i2c Chip Driver.
+ *
+ */
+static void __exit rmi_phys_i2c_exit(void)
+{
+ i2c_del_driver(&rmi_i2c_driver);
+}
+
+
+module_init(rmi_phys_i2c_init);
+module_exit(rmi_phys_i2c_exit);
+
+MODULE_AUTHOR("Synaptics, Inc.");
+MODULE_DESCRIPTION("RMI4 Driver I2C Physical Layer");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/rmi_i2c.h b/drivers/input/touchscreen/rmi_i2c.h
new file mode 100644
index 0000000..df1290f
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_i2c.h
@@ -0,0 +1,50 @@
+/**
+ *
+ * Synaptics RMI over I2C Physical Layer Driver Header File.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#ifndef _RMI_I2C_H
+#define _RMI_I2C_H
+
+#include "rmi_platformdata.h"
+
+/* Sensor-specific configuration data, to be included as the platform data
+ * for the relevant i2c_board_info entry.
+ *
+ * This describes a single RMI4 sensor on an I2C bus, including:
+ * its I2C address, IRQ (if any), the type of IRQ (if applicable), and an
+ * optional list of any non-default settings (on a per function basis)
+ * to be applied at start up.
+ */
+struct rmi_i2c_platformdata {
+ /* The seven-bit i2c address of the sensor. */
+ int i2c_address;
+ /* The number of the irq. Set to zero if polling is required. */
+ int irq;
+ /* The type of the irq (e.g., IRQF_TRIGGER_FALLING).
+ Only valid if irq != 0 */
+ int irq_type;
+ /* Use this to specify non-default settings on a per function basis. */
+ struct rmi_functiondata_list *perfunctiondata;
+};
+
+#endif
diff --git a/drivers/input/touchscreen/rmi_spi.c b/drivers/input/touchscreen/rmi_spi.c
new file mode 100644
index 0000000..e0444ec
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_spi.c
@@ -0,0 +1,474 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) SPI Physical Layer Driver.
+ * Copyright (C) 2008-2011, 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/interrupt.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_device.h>
+#include <linux/semaphore.h>
+#include "rmi_spi.h"
+#include "rmi_drvr.h"
+
+#define DRIVER_NAME "rmi4_ts"
+#define DEVICE_NAME "rmi4_ts"
+
+#define RMI_TDPB 65 /* 65 microseconds inter-byte delay between bytes for RMI chip*/
+#define SPI_BUFSIZ 32
+
+static u8 *buf;
+
+/** This is a count of how many clients are accessing this driver.
+ */
+static int num_clients;
+static struct rmi_spi_platformdata *platformdata;
+
+
+/**
+ * This is the data kept on a per instance (client) basis. This data is
+ * always accessible by using the container_of() macro of the various elements
+ * inside.
+ */
+struct instance_data {
+ int instance_no;
+ int irq;
+ struct rmi_phys_driver rpd;
+ struct spi_device *spidev;
+};
+
+
+static int spi_xfer(struct spi_device *spi,
+ const u8 *txbuf, unsigned n_tx,
+ u8 *rxbuf, unsigned n_rx)
+{
+ static DECLARE_MUTEX(lock);
+
+ int status;
+ struct spi_message message;
+ struct spi_transfer x[2];
+ u8 *local_buf;
+
+
+ if ((n_tx + n_rx) > SPI_BUFSIZ)
+ return -EINVAL;
+
+ spi_message_init(&message);
+ memset(x, 0, sizeof x);
+ if (n_tx) {
+ x[0].len = n_tx;
+ x[0].delay_usecs = RMI_TDPB;
+ spi_message_add_tail(&x[0], &message);
+ }
+ if (n_rx) {
+#ifdef CONFIG_ARCH_OMAP
+ x[1].len = n_rx-1; /* since OMAP has one dummy byte. */
+#else
+ x[1].len = n_rx;
+#endif
+ x[1].delay_usecs = RMI_TDPB;
+ spi_message_add_tail(&x[1], &message);
+ }
+
+ /* ... unless someone else is using the pre-allocated buffer */
+ if (down_trylock(&lock)) {
+ local_buf = kmalloc(SPI_BUFSIZ, GFP_KERNEL);
+ if (!local_buf)
+ return -ENOMEM;
+ } else
+ local_buf = buf;
+
+ memcpy(local_buf, txbuf, n_tx);
+
+
+ x[0].tx_buf = local_buf;
+ x[1].rx_buf = local_buf + n_tx;
+
+ /* do the i/o */
+ status = spi_sync(spi, &message);
+ if (status == 0) {
+ memcpy(rxbuf, x[1].rx_buf, n_rx);
+ status = message.status;
+ } else {
+ printk(KERN_ERR "spi_sync fials!\n");
+ }
+
+ if (x[0].tx_buf == buf)
+ up(&lock);
+ else
+ kfree(local_buf);
+
+ return status;
+}
+
+/**
+ * Read a single register through spi.
+ * \param[in] pd
+ * \param[in] address The address at which to start the data read.
+ * \param[out] valp Pointer to the buffer where the data will be stored.
+ * \return zero upon success (with the byte read in valp), non-zero upon error.
+ */
+static int
+rmi_spi_read(struct rmi_phys_driver *pd, unsigned short address, char *valp)
+{
+ struct instance_data *id = container_of(pd, struct instance_data, rpd);
+
+ char rxbuf[2];
+ int retval;
+ unsigned short addr = address;
+
+ addr = ((addr & 0xff00) >> 8);
+ address = ((address & 0x00ff) << 8);
+ addr |= address;
+ addr |= 0x80; /* High bit set indicates read. */
+
+ retval = spi_xfer(id->spidev, (u8 *)&addr, 2, rxbuf, 1);
+
+ *valp = rxbuf[0];
+
+ return retval;
+}
+
+/**
+ * Same as rmi_spi_read, except that multiple bytes are allowed to be read.
+ * \param[in] pd
+ * \param[in] address The address at which to start the data read.
+ * \param[out] valp Pointer to the buffer where the data will be stored. This
+ * buffer must be at least size bytes long.
+ * \param[in] size The number of bytes to be read.
+ * \return zero upon success (with the byte read in valp), non-zero upon error.
+ */
+static int
+rmi_spi_read_multiple(struct rmi_phys_driver *pd, unsigned short address,
+ char *valp, int size)
+{
+ struct instance_data *id = container_of(pd, struct instance_data, rpd);
+ int retval;
+
+ unsigned short addr = address;
+
+ addr = ((addr & 0xff00) >> 8);
+ address = ((address & 0x00ff) << 8);
+ addr |= address;
+ addr |= 0x80; /* High bit set indicates read. */
+
+ retval = spi_xfer(id->spidev, (u8 *)&addr, 2, valp, size);
+
+ return retval;
+}
+
+/**
+ * Write a single register through spi.
+ * You can write multiple registers at once, but I made the functions for that
+ * seperate for performance reasons. Writing multiple requires allocation and
+ * freeing.
+ * \param[in] pd
+ * \param[in] address The address at which to start the write.
+ * \param[in] data The data to be written.
+ * \return one upon success, something else upon error.
+ */
+static int
+rmi_spi_write(struct rmi_phys_driver *pd, unsigned short address, char data)
+{
+ struct instance_data *id = container_of(pd, struct instance_data, rpd);
+ unsigned char txbuf[4];
+ int retval;
+
+ txbuf[2] = data;
+ txbuf[1] = address;
+ txbuf[0] = address>>8;
+
+ retval = spi_xfer(id->spidev, txbuf, 3, NULL, 0);
+ return retval ? 0 : 1;
+}
+
+/**
+ * Write multiple registers.
+ * \param[in] pd
+ * \param[in] address The address at which to start the write.
+ * \param[in] valp A pointer to a buffer containing the data to be written.
+ * \param[in] size The number of bytes to write.
+ * \return one upon success, something else upon error.
+ */
+static int
+rmi_spi_write_multiple(struct rmi_phys_driver *pd, unsigned short address,
+ char *valp, int size)
+{
+ struct instance_data *id = container_of(pd, struct instance_data, rpd);
+ unsigned char txbuf[32];
+ int retval;
+ int i;
+
+ txbuf[1] = address;
+ txbuf[0] = address>>8;
+
+ for (i = 0; i < size; i++)
+ txbuf[i + 2] = valp[i];
+
+ retval = spi_xfer(id->spidev, txbuf, size+2, NULL, 0);
+
+ return retval ? 0 : 1;
+}
+
+/**
+ * This is the Interrupt Service Routine. It just notifies the application
+ * layer that attention is required.
+ */
+static irqreturn_t spi_attn_isr(int irq, void *info)
+{
+ struct instance_data *id = info;
+ disable_irq(id->irq);
+ if (id->rpd.attention)
+ id->rpd.attention(&id->rpd, id->instance_no);
+ return IRQ_HANDLED;
+}
+
+
+static int rmi_spi_probe(struct spi_device *spi)
+{
+ struct instance_data *id;
+ int retval;
+ int i;
+ bool found;
+ struct rmi_spi_data *rmispidata;
+ struct rmi_spi_platformdata *platformdata;
+
+ printk(KERN_INFO "Probing RMI4 SPI device\n");
+
+ found = false;
+
+ spi->bits_per_word = 8;
+
+ spi->mode = SPI_MODE_3;
+
+ buf = kmalloc(SPI_BUFSIZ, GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_ERR "%s: Out of memory - can't allocate memory for spi buffer\n", __func__);
+ return -ENOMEM;
+ }
+
+ retval = spi_setup(spi);
+ if (retval < 0) {
+ printk(KERN_ERR "%s: spi_setup failed.", __func__);
+ return retval;
+ }
+
+ id = kzalloc(sizeof(*id), GFP_KERNEL);
+ if (!id) {
+ printk(KERN_ERR "%s: Out of memory - can't allocate memory for instance data.", __func__);
+ return -ENOMEM;
+ }
+
+ id->spidev = spi;
+ id->rpd.name = DRIVER_NAME;
+ id->rpd.write = rmi_spi_write;
+ id->rpd.read = rmi_spi_read;
+ id->rpd.write_multiple = rmi_spi_write_multiple;
+ id->rpd.read_multiple = rmi_spi_read_multiple;
+ id->rpd.module = THIS_MODULE;
+ id->rpd.polling_required = true; /* default to polling if irq not used */
+
+ /* Loop through the client data and locate the one that was found. */
+
+ rmispidata = spi->dev.platform_data;
+
+ /* Loop through the platform data and locate the one that matches the clients address */
+ for (i = 0; i < rmispidata->num_clients; i++) {
+ platformdata = &(rmispidata->platformdata[i]);
+ if (platformdata->chip == RMI_SUPPORT) {
+ id->instance_no = i;
+ found = true;
+
+ /* set the device name using the instance_no appended to DEVICE_NAME to make a unique name */
+ dev_set_name(&spi->dev, "rmi4-spi%d", id->instance_no);
+ /*
+ * Determine if we need to poll (inefficient) or use interrupts.
+ */
+ if (platformdata->irq) {
+ int irqtype;
+
+ id->irq = platformdata->irq;
+ switch (platformdata->irq_type) {
+ case IORESOURCE_IRQ_HIGHEDGE:
+ irqtype = IRQF_TRIGGER_RISING;
+ break;
+ case IORESOURCE_IRQ_LOWEDGE:
+ irqtype = IRQF_TRIGGER_FALLING;
+ break;
+ case IORESOURCE_IRQ_HIGHLEVEL:
+ irqtype = IRQF_TRIGGER_HIGH;
+ break;
+ case IORESOURCE_IRQ_LOWLEVEL:
+ irqtype = IRQF_TRIGGER_LOW;
+ break;
+ default:
+ dev_warn(&spi->dev, "%s: Invalid IRQ flags in platform data.", __func__);
+ kfree(id);
+ return -ENXIO;
+ }
+
+ retval = request_irq(id->irq, spi_attn_isr, irqtype, "rmi_spi", id);
+ if (retval) {
+ dev_info(&spi->dev, "%s: Unable to get attn irq %d. Reverting to polling.", __func__, id->irq);
+ id->rpd.polling_required = true;
+ } else {
+ dev_dbg(&spi->dev, "%s: got irq", __func__);
+ id->rpd.polling_required = false;
+ id->rpd.irq = id->irq;
+ }
+ } else {
+ id->rpd.polling_required = true;
+ dev_info(&spi->dev, "%s: No IRQ info given. Polling required.", __func__);
+ }
+ }
+ }
+
+ /* if went through all the platform data list and didn't find a match
+ * then notify that we are defaulting to polling */
+ if (!found)
+ dev_info(&spi->dev, "%s: No platform data match found. Defaulting to use polling.", __func__);
+
+ /* Store instance data for later access. */
+ if (id)
+ spi_set_drvdata(spi, id);
+
+ /* Register the sensor driver - which will trigger a scan of the PDT. */
+ retval = rmi_register_sensor(&id->rpd, platformdata->perfunctiondata);
+ if (retval) {
+ printk(KERN_ERR "rmi_register_phys_driver failed with code %d.", retval);
+ if (id->irq)
+ free_irq(id->irq, id);
+ kfree(id);
+ return retval;
+ }
+
+ printk(KERN_INFO "%s: Successfully Registered %s.", __func__, id->rpd.name);
+
+ return 0;
+}
+
+static int rmi_spi_suspend(struct spi_device *spi, pm_message_t message)
+{
+ return 0;
+}
+
+static int rmi_spi_resume(struct spi_device *spi)
+{
+ return 0;
+}
+
+static int __devexit rmi_spi_remove(struct spi_device *spi)
+{
+ struct instance_data *id = spi_get_drvdata(spi);
+
+ rmi_spi_suspend(spi, PMSG_SUSPEND);
+
+ rmi_unregister_sensors(&id->rpd);
+
+ if (id) {
+ if (id->irq)
+ free_irq(id->irq, id);
+ kfree(id);
+ }
+
+ return 0;
+}
+
+static struct spi_driver rmi_spi_driver = {
+ .driver = {
+ .name = "rmi_spi",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .probe = rmi_spi_probe,
+ .remove = __devexit_p(rmi_spi_remove),
+ .suspend = rmi_spi_suspend,
+ .resume = rmi_spi_resume,
+};
+
+/**
+ * The Platform Driver probe function. We just tell the spi subsystem about
+ * ourselves in this call.
+ */
+static int
+rmi_spi_plat_probe(struct platform_device *dev)
+{
+ struct rmi_spi_data *mid = dev->dev.platform_data;
+
+ if (!mid) {
+ printk(KERN_ERR "A platform device must contain rmi_spi_data\n");
+ return -ENXIO;
+ }
+
+ num_clients = mid->num_clients;
+ platformdata = mid->platformdata;
+
+ return spi_register_driver(&rmi_spi_driver);
+}
+
+/**
+ * Tell the spi subsystem that we're done.
+ * \param[in] dev
+ * \return Always returns 0.
+ */
+static int
+rmi_spi_plat_remove(struct platform_device *dev)
+{
+ spi_unregister_driver(&rmi_spi_driver);
+ return 0;
+}
+
+/**
+ * Structure used to tell the Platform Driver subsystem about us.
+ */
+static struct platform_driver rmi_spi_platform_driver = {
+ .driver = {
+ .name = "rmi_spi_plat",
+ },
+ .probe = rmi_spi_plat_probe,
+ .remove = rmi_spi_plat_remove,
+};
+
+static int __init rmi_spi_init(void)
+{
+ return platform_driver_register(&rmi_spi_platform_driver);
+}
+module_init(rmi_spi_init);
+
+static void __exit rmi_spi_exit(void)
+{
+ kfree(buf);
+ buf = NULL;
+ platform_driver_unregister(&rmi_spi_platform_driver);
+}
+module_exit(rmi_spi_exit);
+
+/** Standard driver module information - the author of the module.
+ */
+MODULE_AUTHOR("Synaptics, Inc.");
+/** Standard driver module information - a summary description of this module.
+ */
+MODULE_DESCRIPTION("RMI4 Driver SPI Physical Layer");
+/** Standard driver module information - the license under which this module
+ * is included in the kernel.
+ */
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/input/touchscreen/rmi_spi.h b/drivers/input/touchscreen/rmi_spi.h
new file mode 100644
index 0000000..0744e8d
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_spi.h
@@ -0,0 +1,55 @@
+/**
+ *
+ * Register Mapped Interface SPI Physical Layer Driver Header File.
+ * Copyright (C) 2008-2011, 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.
+ *
+ *#############################################################################
+ */
+
+#if !defined(RMI_SPI_H)
+#define RMI_SPI_H
+
+#include "rmi_platformdata.h"
+
+#define RMI_CHIP_VER_3 0
+#define RMI_CHIP_VER_4 1
+
+#define RMI_SUPPORT (RMI_CHIP_VER_3|RMI_CHIP_VER_4)
+
+/** Platform-specific configuration data.
+ * This structure is used by the platform-specific driver to designate
+ * specific information about the hardware. A platform client may supply
+ * an array of these to the rmi_phys_spi driver.
+ */
+struct rmi_spi_platformdata {
+ /* struct spi_device spi_dev; */
+ int chip;
+
+ /* The number of the irq. Set to zero if polling is required. */
+ int irq;
+
+ /* The type of the irq (e.g., IRQF_TRIGGER_FALLING). Only valid if
+ * irq != 0 */
+ int irq_type;
+
+ /* Use this to specify non-default settings on a per function basis. */
+ struct rmi_functiondata_list *perfunctiondata;
+};
+
+#endif
diff --git a/drivers/input/touchscreen/rmi_platformdata.h b/drivers/input/touchscreen/rmi_platformdata.h
new file mode 100644
index 0000000..3352381
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_platformdata.h
@@ -0,0 +1,93 @@
+/**
+ *
+ * Synaptics RMI platform data definitions for use in board files.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#if !defined(RMI_PLATFORMDATA_H)
+#define RMI_PLATFORMDATA_H
+
+#define RMI_F01_INDEX 0x01
+#define RMI_F11_INDEX 0x11
+#define RMI_F19_INDEX 0x19
+#define RMI_F34_INDEX 0x34
+
+
+/* A couple of structs that are useful for frequently occuring constructs, such
+ * as coordinate origin offsets or coordinate clipping values.
+ */
+struct rmi_XY_pair {
+ int x;
+ int y;
+};
+
+struct rmi_range {
+ int min;
+ int max;
+};
+
+/* This contains the per-function customization for a given function. We store
+ * the data this way in order to avoid allocating a large sparse array - typically
+ * only a few functions are present on a sensor, and even fewer will be have
+ * custom settings. There is a very small penalty paid for doing a linear
+ * search through the list to find a given function's data, but since the list
+ * is typically very short and is searched only at system boot time, this is
+ * considered acceptable.
+ *
+ * When adding new fields to a functiondata struct, please follow these rules:
+ * - Where possible, use 0 to indicate that the value should be defaulted.
+ * This works pretty well for bools, ints, and chars.
+ * - Where this is not practical (for example, in coordinate offsets or
+ * range clipping), use a pointer. Set that pointer to null to indicate
+ * that the value should be defaulted.
+ */
+struct rmi_functiondata {
+ unsigned char function_index;
+ void *data;
+};
+
+/* This can be included in the platformdata for SPI or I2C RMI4 devices to
+ * customize the settings of the functions on a given sensor.
+ */
+struct rmi_functiondata_list {
+ unsigned char count; /* Number of elements in the array */
+ struct rmi_functiondata *functiondata;
+};
+
+struct rmi_f11_functiondata {
+ bool swap_axes;
+ bool flipX;
+ bool flipY;
+ struct rmi_XY_pair *offset;
+ struct rmi_range *clipX;
+ struct rmi_range *clipY;
+};
+
+struct rmi_button_map {
+ unsigned char nbuttons;
+ unsigned char *map;
+};
+
+struct rmi_f19_functiondata {
+ struct rmi_button_map *button_map;
+};
+
+#endif
\ No newline at end of file
diff --git a/drivers/input/touchscreen/rmi_drvr.h b/drivers/input/touchscreen/rmi_drvr.h
new file mode 100644
index 0000000..460e25a
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_drvr.h
@@ -0,0 +1,96 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) RMI Driver Header File.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include "rmi.h"
+
+#ifndef _RMI_DRVR_H
+#define _RMI_DRVR_H
+
+#include "rmi_platformdata.h"
+
+/* RMI4 Protocol Support
+ */
+
+struct rmi_phys_driver {
+ char *name;
+ int (*write)(struct rmi_phys_driver *physdrvr, unsigned short address,
+ char data);
+ int (*read)(struct rmi_phys_driver *physdrvr, unsigned short address,
+ char *buffer);
+ int (*write_multiple)(struct rmi_phys_driver *physdrvr,
+ unsigned short address, char *buffer, int length);
+ int (*read_multiple)(struct rmi_phys_driver *physdrvr, unsigned short address,
+ char *buffer, int length);
+ void (*attention)(struct rmi_phys_driver *physdrvr, int instance);
+ bool polling_required;
+ int irq;
+
+ /* Standard kernel linked list implementation.
+ * Documentation on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head drivers;
+ struct rmi_sensor_driver *sensor;
+ struct module *module;
+};
+
+int rmi_read(struct rmi_sensor_driver *sensor, unsigned short address, char *dest);
+int rmi_write(struct rmi_sensor_driver *sensor, unsigned short address,
+ unsigned char data);
+int rmi_read_multiple(struct rmi_sensor_driver *sensor, unsigned short address,
+ char *dest, int length);
+int rmi_write_multiple(struct rmi_sensor_driver *sensor, unsigned short address,
+ unsigned char *data, int length);
+int rmi_register_sensor(struct rmi_phys_driver *physdrvr,
+ struct rmi_functiondata_list *perfunctiondata);
+int rmi_unregister_sensors(struct rmi_phys_driver *physdrvr);
+
+/* Set this to 1 to turn on code used in detecting buffer leaks. */
+#define RMI_ALLOC_STATS 1
+
+#if RMI_ALLOC_STATS
+extern int appallocsrmi;
+extern int rfiallocsrmi;
+extern int fnallocsrmi;
+
+#define INC_ALLOC_STAT(X) (X##allocsrmi++)
+#define DEC_ALLOC_STAT(X) \
+ do { \
+ if (X##allocsrmi) X##allocsrmi--; \
+ else printk(KERN_DEBUG "Too many " #X " frees\n"); \
+ } while (0)
+#define CHECK_ALLOC_STAT(X) \
+ do { \
+ if (X##allocsrmi) \
+ printk(KERN_DEBUG "Left over " #X " buffers: %d\n", \
+ X##allocsrmi); \
+ } while (0)
+#else
+#define INC_ALLOC_STAT(X) do { } while (0)
+#define DEC_ALLOC_STAT(X) do { } while (0)
+#define CHECK_ALLOC_STAT(X) do { } while (0)
+#endif
+
+#endif
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 2/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 0:50 [PATCH 0/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver Christopher Heiny
2011-03-30 0:50 ` [PATCH 1/3] " Christopher Heiny
@ 2011-03-30 0:50 ` Christopher Heiny
2011-03-30 0:50 ` [PATCH 3/3] " Christopher Heiny
2 siblings, 0 replies; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 0:50 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: Jean Delvare, Linux Kernel, Linux Input, Christopher Heiny,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
Driver for Synaptics touchscreens using RMI4 protocol.
Signed-off-by: William Manson <wmanson@synaptics.com>
Signed-off-by: Allie Xiong <axiong@synaptics.com>
Signed-off-by: Christopher Heiny <cheiny@synaptics.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Cc: Joeri de Gram <j.de.gram@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
---
diff --git a/drivers/input/touchscreen/rmi_f01.c b/drivers/input/touchscreen/rmi_f01.c
new file mode 100644
index 0000000..ddf6cd3
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f01.c
@@ -0,0 +1,245 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $01 support for sensor
+ * control and configuration.
+ *
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/param.h>
+
+#include "rmi.h"
+#include "rmi_drvr.h"
+#include "rmi_bus.h"
+#include "rmi_sensor.h"
+#include "rmi_function.h"
+#include "rmi_f01.h"
+
+
+#define RMI_REPORT_RATE_80 0
+#define RMI_REPORT_RATE_40 (1 << 6)
+
+/** Context data for each F01 we find.
+ */
+struct f01_instance_data {
+ struct rmi_F01_control *controlRegisters;
+ struct rmi_F01_data *dataRegisters;
+ struct rmi_F01_query *queryRegisters;
+};
+
+/*.
+ * The interrupt handler for Fn $01 doesn't do anything (for now).
+ */
+void FN_01_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs)
+{
+ struct f01_instance_data *instanceData = (struct f01_instance_data *) rmifninfo->fndata;
+
+ printk(KERN_DEBUG "%s: Read device status.", __func__);
+
+ if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr,
+ &instanceData->dataRegisters->deviceStatus, 1)) {
+ printk(KERN_ERR "%s : Could not read F01 device status.\n",
+ __func__);
+ }
+
+ /* TODO: Check for reset and handle appropriately.
+ */
+}
+EXPORT_SYMBOL(FN_01_inthandler);
+
+/*
+ * This reads in the function $01 source data.
+ *
+ */
+void FN_01_attention(struct rmi_function_info *rmifninfo)
+{
+ struct f01_instance_data *instanceData = (struct f01_instance_data *) rmifninfo->fndata;
+
+ /* TODO: Compute size to read and number of IRQ registers to processors
+ * dynamically. See comments in rmi.h. */
+ if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr+1,
+ instanceData->dataRegisters->irqs, 1)) {
+ printk(KERN_ERR "%s : Could not read interrupt status registers at 0x%02x\n",
+ __func__, rmifninfo->funcDescriptor.dataBaseAddr);
+ }
+
+ if (instanceData->dataRegisters->irqs[0] & instanceData->controlRegisters->interruptEnable[0]) {
+ /* call down to the sensors irq dispatcher to dispatch all enabled IRQs */
+ rmifninfo->sensor->dispatchIRQs(rmifninfo->sensor,
+ instanceData->dataRegisters->irqs[0]);
+ }
+
+}
+EXPORT_SYMBOL(FN_01_attention);
+
+int FN_01_config(struct rmi_function_info *rmifninfo)
+{
+ /* print info and do any source specific configuration. */
+ int retval = 0;
+
+ printk(KERN_DEBUG "%s: RMI4 function $01 config\n", __func__);
+
+ /* On slow processors, we need to throttle back the rate at which
+ * data updates become ready. */
+#if 0
+ /* TODO: This code gets invoked pointlessly on some systems, and causes
+ * the Synaptics device to stop working in those cases. We need to figure
+ * out what's going on there.
+ */
+ if (HZ < 500) {
+ /* The default packet rate of 80 packets per
+ * second is too fast (the Linux time slice for
+ * sub-GHz processors is only 100 times per second).
+ * So re-program it to 40 packets per second.
+ */
+ /* TODO: We need to OR this in, rather than stomping on the other
+ * contents of the register. It's OK for now, because this is
+ * early in the initializaton process and nobody else has had
+ * a chance to change this register, which defaults to 0.
+ */
+ rmi_write(rmifninfo->sensor, rmifninfo->funcDescriptor.controlBaseAddr, RMI_REPORT_RATE_40);
+ printk(KERN_INFO "%s: Throttled back reporting for slow CPU (%d HZ).", __func__, HZ);
+ }
+#endif
+
+ return retval;
+}
+EXPORT_SYMBOL(FN_01_config);
+
+/* Initialize any function $01 specific params and settings - input
+ * settings, device settings, etc.
+ */
+int FN_01_init(struct rmi_function_device *function_device)
+{
+ pr_debug("%s: RMI4 function $01 init\n", __func__);
+
+ return 0;
+}
+EXPORT_SYMBOL(FN_01_init);
+
+int FN_01_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr, unsigned int interruptCount)
+{
+ int i;
+ int InterruptOffset;
+ int retval = 0;
+ struct f01_instance_data *instanceData;
+ struct rmi_F01_control *controlRegisters;
+ struct rmi_F01_data *dataRegisters;
+ struct rmi_F01_query *queryRegisters;
+
+ pr_debug("%s: RMI4 function $01 detect\n", __func__);
+
+ /* Store addresses - used elsewhere to read data,
+ * control, query, etc. */
+ rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr;
+ rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr;
+ rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr;
+ rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr;
+ rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt;
+ rmifninfo->funcDescriptor.functionNum = fndescr->functionNum;
+
+ rmifninfo->numSources = fndescr->interruptSrcCnt;
+
+ /* Set up context data. */
+ instanceData = kzalloc(sizeof(*instanceData), GFP_KERNEL);
+ if (!instanceData) {
+ printk(KERN_ERR "%s: Error allocating memory for F01 context data.\n", __func__);
+ return -ENOMEM;
+ }
+ queryRegisters = kzalloc(sizeof(*queryRegisters), GFP_KERNEL);
+ if (!queryRegisters) {
+ printk(KERN_ERR "%s: Error allocating memory for F01 query registers.\n", __func__);
+ return -ENOMEM;
+ }
+ instanceData->queryRegisters = queryRegisters;
+ retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.queryBaseAddr,
+ (char *)instanceData->queryRegisters, sizeof(struct rmi_F01_query));
+ if (retval) {
+ printk(KERN_ERR "%s : Could not read F01 control registers at 0x%02x. Error %d.\n",
+ __func__, rmifninfo->funcDescriptor.dataBaseAddr, retval);
+ }
+ printk(KERN_DEBUG "%s: RMI Protocol: %d.%d",
+ __func__, queryRegisters->rmi_maj_ver, queryRegisters->rmi_min_ver);
+ printk(KERN_DEBUG "%s: Manufacturer: %d %s", __func__,
+ queryRegisters->mfgid, queryRegisters->mfgid == 1 ? "(Synaptics)" : "");
+ printk(KERN_DEBUG "%s: Properties: 0x%x",
+ __func__, queryRegisters->properties);
+ printk(KERN_DEBUG "%s: Product Info: 0x%x 0x%x",
+ __func__, queryRegisters->prod_info[0], queryRegisters->prod_info[1]);
+ printk(KERN_DEBUG "%s: Date Code: Year : %d Month: %d Day: %d",
+ __func__, queryRegisters->date_code[0], queryRegisters->date_code[1],
+ queryRegisters->date_code[2]);
+ printk(KERN_DEBUG "%s: Tester ID: %d", __func__, queryRegisters->tester_id);
+ printk(KERN_DEBUG "%s: Serial Number: 0x%x",
+ __func__, queryRegisters->serial_num);
+ printk(KERN_DEBUG "%s: Product ID: %s", __func__, queryRegisters->prod_id);
+
+ /* TODO: size of control registers needs to be computed dynamically. See comment
+ * in rmi.h. */
+ controlRegisters = kzalloc(sizeof(*controlRegisters), GFP_KERNEL);
+ if (!controlRegisters) {
+ printk(KERN_ERR "%s: Error allocating memory for F01 control registers.\n", __func__);
+ return -ENOMEM;
+ }
+ instanceData->controlRegisters = controlRegisters;
+ retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.controlBaseAddr,
+ (char *)instanceData->controlRegisters, sizeof(struct rmi_F01_control));
+ if (retval) {
+ printk(KERN_ERR "%s : Could not read F01 control registers at 0x%02x. Error %d.\n",
+ __func__, rmifninfo->funcDescriptor.dataBaseAddr, retval);
+ }
+
+ /* TODO: size of data registers needs to be computed dynamically. See comment
+ * in rmi.h. */
+ dataRegisters = kzalloc(sizeof(*dataRegisters), GFP_KERNEL);
+ if (!dataRegisters) {
+ printk(KERN_ERR "%s: Error allocating memory for F01 data registers.\n", __func__);
+ return -ENOMEM;
+ }
+ instanceData->dataRegisters = dataRegisters;
+ rmifninfo->fndata = instanceData;
+
+ /* Need to get interrupt info to be used later when handling
+ interrupts. */
+ rmifninfo->interruptRegister = interruptCount/8;
+
+ /* loop through interrupts for each source and or in a bit
+ to the interrupt mask for each. */
+ InterruptOffset = interruptCount % 8;
+
+ for (i = InterruptOffset;
+ i < ((fndescr->interruptSrcCnt & 0x7) + InterruptOffset);
+ i++) {
+ rmifninfo->interruptMask |= 1 << i;
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(FN_01_detect);
diff --git a/drivers/input/touchscreen/rmi_f01.h b/drivers/input/touchscreen/rmi_f01.h
new file mode 100644
index 0000000..976e062
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f01.h
@@ -0,0 +1,40 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $01 header.
+ * Copyright (c) 2007 - 2011, Synaptics Incorporated
+ *
+ * There is only one function $01 for each RMI4 sensor. This will be
+ * the function that is used to set sensor control and configurations
+ * and check the interrupts to find the source function that is interrupting.
+ *
+ *
+ */
+/*
+ * 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.
+ *
+ *#############################################################################
+ */
+#ifndef _RMI_FUNCTION_01_H
+#define _RMI_FUNCTION_01_H
+
+void FN_01_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs);
+int FN_01_config(struct rmi_function_info *rmifninfo);
+int FN_01_init(struct rmi_function_device *function_device);
+int FN_01_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr,
+ unsigned int interruptCount);
+void FN_01_attention(struct rmi_function_info *rmifninfo);
+#endif
diff --git a/drivers/input/touchscreen/rmi_f11.c b/drivers/input/touchscreen/rmi_f11.c
new file mode 100644
index 0000000..7902f36
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f11.c
@@ -0,0 +1,909 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $11 support for 2D.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+
+#include "rmi.h"
+#include "rmi_drvr.h"
+#include "rmi_bus.h"
+#include "rmi_sensor.h"
+#include "rmi_function.h"
+#include "rmi_f11.h"
+#include "rmi_platformdata.h"
+
+
+static int sensorMaxX;
+static int sensorMaxY;
+
+struct f11_instance_data {
+ struct rmi_F11_device_query *deviceInfo;
+ struct rmi_F11_sensor_query *sensorInfo;
+ struct rmi_F11_control *controlRegisters;
+ unsigned char fingerDataBufferSize;
+ unsigned char absDataOffset;
+ unsigned char absDataSize;
+ unsigned char relDataOffset;
+ unsigned char gestureDataOffset;
+ unsigned char *fingerDataBuffer;
+ /* Last X & Y seen, needed at finger lift. Was down indicates at least one finger was here. */
+ /* TODO: Eventually we'll need to track this info on a per finger basis. */
+ bool wasdown;
+ unsigned int oldX;
+ unsigned int oldY;
+ /* Transformations to be applied to coordinates before reporting. */
+ bool flipX;
+ bool flipY;
+ int offsetX;
+ int offsetY;
+ int clipXLow;
+ int clipXHigh;
+ int clipYLow;
+ int clipYHigh;
+ bool swap_axes;
+ bool relReport;
+};
+
+enum f11_finger_state {
+ F11_NO_FINGER = 0,
+ F11_PRESENT = 1,
+ F11_INACCURATE = 2,
+ F11_RESERVED = 3
+};
+
+static ssize_t rmi_fn_11_flip_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_11_flip_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+DEVICE_ATTR(flip, 0664, rmi_fn_11_flip_show, rmi_fn_11_flip_store); /* RW attr */
+
+static ssize_t rmi_fn_11_clip_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_11_clip_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+DEVICE_ATTR(clip, 0664, rmi_fn_11_clip_show, rmi_fn_11_clip_store); /* RW attr */
+
+static ssize_t rmi_fn_11_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_11_offset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+DEVICE_ATTR(offset, 0664, rmi_fn_11_offset_show, rmi_fn_11_offset_store); /* RW attr */
+
+static ssize_t rmi_fn_11_swap_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_11_swap_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+DEVICE_ATTR(swap, 0664, rmi_fn_11_swap_show, rmi_fn_11_swap_store); /* RW attr */
+
+static void FN_11_relreport(struct rmi_function_info *rmifninfo);
+
+/*
+ * There is no attention function for Fn $11 - it is left NULL
+ * in the function table so it is not called.
+ *
+ */
+
+
+/*
+ * This reads in a sample and reports the function $11 source data to the
+ * input subsystem. It is used for both polling and interrupt driven
+ * operation. This is called a lot so don't put in any informational
+ * printks since they will slow things way down!
+ */
+void FN_11_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs)
+{
+ /* number of touch points - fingers down in this case */
+ int fingerDownCount;
+ int finger;
+ struct rmi_function_device *function_device;
+ struct f11_instance_data *instanceData;
+
+ instanceData = (struct f11_instance_data *) rmifninfo->fndata;
+
+ fingerDownCount = 0;
+ function_device = rmifninfo->function_device;
+
+ /* get 2D sensor finger data */
+
+ if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr,
+ instanceData->fingerDataBuffer, instanceData->fingerDataBufferSize)) {
+ printk(KERN_ERR "%s: Failed to read finger data registers.\n", __func__);
+ return;
+ }
+
+ /* First we need to count the fingers and generate some events related to that. */
+ for (finger = 0; finger < instanceData->sensorInfo->numberOfFingers; finger++) {
+ int reg;
+ int fingerShift;
+ int fingerStatus;
+
+ /* determine which data byte the finger status is in */
+ reg = finger/4;
+ /* bit shift to get finger's status */
+ fingerShift = (finger % 4) * 2;
+ fingerStatus = (instanceData->fingerDataBuffer[reg] >> fingerShift) & 3;
+
+ if (fingerStatus == F11_PRESENT || fingerStatus == F11_INACCURATE) {
+ fingerDownCount++;
+ instanceData->wasdown = true;
+ }
+ }
+ input_report_key(function_device->input,
+ BTN_TOUCH, fingerDownCount);
+ for (finger = 0; finger < (instanceData->sensorInfo->numberOfFingers - 1); finger++) {
+ input_report_key(function_device->input,
+ BTN_2 + finger, fingerDownCount >= (finger + 2));
+ }
+
+ for (finger = 0; finger < instanceData->sensorInfo->numberOfFingers; finger++) {
+ int reg;
+ int fingerShift;
+ int fingerStatus;
+ int X = 0, Y = 0, Z = 0, Wy = 0, Wx = 0;
+
+ /* determine which data byte the finger status is in */
+ reg = finger/4;
+ /* bit shift to get finger's status */
+ fingerShift = (finger % 4) * 2;
+ fingerStatus = (instanceData->fingerDataBuffer[reg] >> fingerShift) & 3;
+
+ /* if finger status indicates a finger is present then
+ read the finger data and report it */
+ if (fingerStatus == F11_PRESENT || fingerStatus == F11_INACCURATE) {
+
+ if (instanceData->sensorInfo->hasAbs) {
+ int maxX = instanceData->controlRegisters->sensorMaxXPos;
+ int maxY = instanceData->controlRegisters->sensorMaxYPos;
+ reg = instanceData->absDataOffset + (finger * instanceData->absDataSize);
+ X = (instanceData->fingerDataBuffer[reg] << 4) & 0x0ff0;
+ X |= (instanceData->fingerDataBuffer[reg+2] & 0x0f);
+ Y = (instanceData->fingerDataBuffer[reg+1] << 4) & 0x0ff0;
+ Y |= ((instanceData->fingerDataBuffer[reg+2] & 0xf0) >> 4) & 0x0f;
+ /* First thing to do is swap axes if needed.
+ */
+ if (instanceData->swap_axes) {
+ int temp = X;
+ X = Y;
+ Y = temp;
+ maxX = instanceData->controlRegisters->sensorMaxYPos;
+ maxY = instanceData->controlRegisters->sensorMaxXPos;
+ }
+ if (instanceData->flipX)
+ X = max(maxX-X, 0);
+ X = X - instanceData->offsetX;
+ X = min(max(X, instanceData->clipXLow), instanceData->clipXHigh);
+ if (instanceData->flipY)
+ Y = max(maxY-Y, 0);
+ Y = Y - instanceData->offsetY;
+ Y = min(max(Y, instanceData->clipYLow), instanceData->clipYHigh);
+
+ /* upper 4 bits of W are Wy,
+ lower 4 of W are Wx */
+ Wy = (instanceData->fingerDataBuffer[reg+3] >> 4) & 0x0f;
+ Wx = instanceData->fingerDataBuffer[reg+3] & 0x0f;
+ if (instanceData->swap_axes) {
+ int temp = Wx;
+ Wx = Wy;
+ Wy = temp;
+ }
+
+ Z = instanceData->fingerDataBuffer[reg+4];
+
+#if 0
+ printk(KERN_DEBUG "%s: Finger %d X %d Y %d Z %d Wx %d Wy %d", __func__, finger, X, Y, Z, Wx, Wy);
+#endif
+
+ /* if this is the first finger report normal
+ ABS_X, ABS_Y, PRESSURE, TOOL_WIDTH events for
+ non-MT apps. Apps that support Multi-touch
+ will ignore these events and use the MT events.
+ Apps that don't support Multi-touch will still
+ function.
+ */
+ if (fingerDownCount == 1) {
+ instanceData->oldX = X;
+ instanceData->oldY = Y;
+ input_report_abs(function_device->input, ABS_X, X);
+ input_report_abs(function_device->input, ABS_Y, Y);
+ input_report_abs(function_device->input, ABS_PRESSURE, Z);
+ input_report_abs(function_device->input, ABS_TOOL_WIDTH,
+ max(Wx, Wy));
+ } else {
+ /* TODO generate non MT events for multifinger situation. */
+ }
+#ifdef CONFIG_SYNA_MULTI_TOUCH
+ /* Report Multi-Touch events for each finger */
+ /* major axis of touch area ellipse */
+ input_report_abs(function_device->input, ABS_MT_TOUCH_MAJOR, Z);
+ /* minor axis of touch area ellipse */
+ input_report_abs(function_device->input, ABS_MT_WIDTH_MAJOR,
+ max(Wx, Wy));
+ /* Currently only 2 supported - 1 or 0 */
+ input_report_abs(function_device->input, ABS_MT_ORIENTATION,
+ (Wx > Wy ? 1 : 0));
+ input_report_abs(function_device->input, ABS_MT_POSITION_X, X);
+ input_report_abs(function_device->input, ABS_MT_POSITION_Y, Y);
+
+ /* TODO: Tracking ID needs to be reported but not used yet. */
+ /* Could be formed by keeping an id per position and assiging */
+ /* a new id when fingerStatus changes for that position.*/
+ input_report_abs(function_device->input, ABS_MT_TRACKING_ID,
+ finger+1);
+
+ /* MT sync between fingers */
+ input_mt_sync(function_device->input);
+#endif
+ }
+ }
+ }
+
+ /* if we had a finger down before and now we don't have any send a button up. */
+ if ((fingerDownCount == 0) && instanceData->wasdown) {
+ instanceData->wasdown = false;
+
+#ifdef CONFIG_SYNA_MULTI_TOUCH
+ input_report_abs(function_device->input, ABS_MT_TOUCH_MAJOR, 0);
+ input_report_abs(function_device->input, ABS_MT_WIDTH_MAJOR, 0);
+ input_report_abs(function_device->input, ABS_MT_POSITION_X, instanceData->oldX);
+ input_report_abs(function_device->input, ABS_MT_POSITION_Y, instanceData->oldY);
+ input_report_abs(function_device->input, ABS_MT_TRACKING_ID, 1);
+ input_mt_sync(function_device->input);
+#endif
+
+ input_report_abs(function_device->input, ABS_X, instanceData->oldX);
+ input_report_abs(function_device->input, ABS_Y, instanceData->oldY);
+ instanceData->oldX = instanceData->oldY = 0;
+ printk(KERN_DEBUG "%s: Finger up.", __func__);
+ }
+
+ FN_11_relreport(rmifninfo);
+ input_sync(function_device->input); /* sync after groups of events */
+
+}
+EXPORT_SYMBOL(FN_11_inthandler);
+
+/* This function reads in relative data for first finger and send to input system */
+static void FN_11_relreport(struct rmi_function_info *rmifninfo)
+{
+ struct f11_instance_data *instanceData;
+ struct rmi_function_device *function_device;
+ instanceData = (struct f11_instance_data *) rmifninfo->fndata;
+ signed char X, Y;
+ unsigned short fn11DataBaseAddr;
+ unsigned short fn11DataRelStartingAddr;
+
+ if (instanceData->sensorInfo->hasRel && instanceData->relReport) {
+ printk(KERN_DEBUG "%s: RMI4 function $11 FN_11_relrepor supports relative mode\n", __func__);
+ function_device = rmifninfo->function_device;
+
+ fn11DataBaseAddr = rmifninfo->funcDescriptor.dataBaseAddr;
+ /* Read and report Rel data for primary finger one register for X and one for Y*/
+ int reg = instanceData->relDataOffset;
+ X = instanceData->fingerDataBuffer[reg];
+ Y = instanceData->fingerDataBuffer[reg+1];
+#if 0
+ printk(KERN_INFO "%s: RMI4 function $11 FN_11_relrepor fn11DataRel offset = 0x%x X = %d Y = %d ", __func__, reg, X, Y);
+#endif
+ if (instanceData->swap_axes) {
+ signed char temp = X;
+ X = Y;
+ Y = temp;
+ }
+ if (instanceData->flipX) {
+ printk(KERN_DEBUG "%s: RMI4 function $11 FN_11_relrepor flipX\n", __func__);
+ X = -X;
+ }
+ if (instanceData->flipY) {
+ printk(KERN_DEBUG "%s: RMI4 function $11 FN_11_relrepor flipY\n", __func__);
+ Y = -Y;
+ }
+ X = min(127, max(-128, X));
+ Y = min(127, max(-128, Y));
+ printk(KERN_DEBUG "%s: RMI4 function $11 FN_11_relrepor after min/max calculation delX: %d delY: %d\n", __func__, X, Y);
+
+ input_report_rel(function_device->input, REL_X, X);
+ input_report_rel(function_device->input, REL_Y, Y);
+ } else {
+ printk(KERN_DEBUG "%s: RMI4 function $11 relative support mode not enabled\n", __func__);
+ }
+}
+
+int FN_11_config(struct rmi_function_info *rmifninfo)
+{
+ /* For the data source - print info and do any
+ source specific configuration. */
+ unsigned char data[14];
+ int retval = 0;
+
+ pr_debug("%s: RMI4 function $11 config\n", __func__);
+
+ /* Get and print some info about the data source... */
+
+ /* To Query 2D devices we need to read from the address obtained
+ * from the function descriptor stored in the RMI function info.
+ */
+ retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.queryBaseAddr,
+ data, 9);
+ if (retval) {
+ printk(KERN_ERR "%s: RMI4 function $11 config:"
+ "Could not read function query registers 0x%x\n",
+ __func__, rmifninfo->funcDescriptor.queryBaseAddr);
+ } else {
+ pr_debug("%s: Number of Fingers: %d\n",
+ __func__, data[1] & 7);
+ pr_debug("%s: Is Configurable: %d\n",
+ __func__, data[1] & (1 << 7) ? 1 : 0);
+ pr_debug("%s: Has Gestures: %d\n",
+ __func__, data[1] & (1 << 5) ? 1 : 0);
+ pr_debug("%s: Has Absolute: %d\n",
+ __func__, data[1] & (1 << 4) ? 1 : 0);
+ pr_debug("%s: Has Relative: %d\n",
+ __func__, data[1] & (1 << 3) ? 1 : 0);
+
+ pr_debug("%s: Number X Electrodes: %d\n",
+ __func__, data[2] & 0x1f);
+ pr_debug("%s: Number Y Electrodes: %d\n",
+ __func__, data[3] & 0x1f);
+ pr_debug("%s: Maximum Electrodes: %d\n",
+ __func__, data[4] & 0x1f);
+
+ pr_debug("%s: Absolute Data Size: %d\n",
+ __func__, data[5] & 3);
+
+ pr_debug("%s: Has XY Dist: %d\n",
+ __func__, data[7] & (1 << 7) ? 1 : 0);
+ pr_debug("%s: Has Pinch: %d\n",
+ __func__, data[7] & (1 << 6) ? 1 : 0);
+ pr_debug("%s: Has Press: %d\n",
+ __func__, data[7] & (1 << 5) ? 1 : 0);
+ pr_debug("%s: Has Flick: %d\n",
+ __func__, data[7] & (1 << 4) ? 1 : 0);
+ pr_debug("%s: Has Early Tap: %d\n",
+ __func__, data[7] & (1 << 3) ? 1 : 0);
+ pr_debug("%s: Has Double Tap: %d\n",
+ __func__, data[7] & (1 << 2) ? 1 : 0);
+ pr_debug("%s: Has Tap and Hold: %d\n",
+ __func__, data[7] & (1 << 1) ? 1 : 0);
+ pr_debug("%s: Has Tap: %d\n",
+ __func__, data[7] & 1 ? 1 : 0);
+ pr_debug("%s: Has Palm Detect: %d\n",
+ __func__, data[8] & 1 ? 1 : 0);
+ pr_debug("%s: Has Rotate: %d\n",
+ __func__, data[8] & (1 << 1) ? 1 : 0);
+
+ retval = rmi_read_multiple(rmifninfo->sensor,
+ rmifninfo->funcDescriptor.controlBaseAddr, data, 14);
+ if (retval) {
+ printk(KERN_ERR "%s: RMI4 function $11 config:"
+ "Could not read control registers 0x%x\n",
+ __func__, rmifninfo->funcDescriptor.controlBaseAddr);
+ return retval;
+ }
+
+ /* Store these for use later...*/
+ sensorMaxX = ((data[6] & 0x1f) << 8) | ((data[7] & 0xff) << 0);
+ sensorMaxY = ((data[8] & 0x1f) << 8) | ((data[9] & 0xff) << 0);
+
+ pr_debug("%s: Sensor Max X: %d\n", __func__, sensorMaxX);
+ pr_debug("%s: Sensor Max Y: %d\n", __func__, sensorMaxY);
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(FN_11_config);
+
+/* This operation is done in a number of places, so we have a handy routine
+ * for it.
+ */
+static void f11_set_abs_params(struct rmi_function_device *function_device)
+{
+ struct f11_instance_data *instance_data = function_device->rfi->fndata;
+ /* Use the max X and max Y read from the device, or the clip values,
+ * whichever is stricter.
+ */
+ int xMin = instance_data->clipXLow;
+ int xMax = min((int) instance_data->controlRegisters->sensorMaxXPos, instance_data->clipXHigh);
+ int yMin = instance_data->clipYLow;
+ int yMax = min((int) instance_data->controlRegisters->sensorMaxYPos, instance_data->clipYHigh);
+ if (instance_data->swap_axes) {
+ int temp = xMin;
+ xMin = yMin;
+ yMin = temp;
+ temp = xMax;
+ xMax = yMax;
+ yMax = temp;
+ }
+ printk(KERN_INFO "%s: Set ranges X=[%d..%d] Y=[%d..%d].", __func__, xMin, xMax, yMin, yMax);
+ input_set_abs_params(function_device->input, ABS_X, xMin, xMax,
+ 0, 0);
+ input_set_abs_params(function_device->input, ABS_Y, yMin, yMax,
+ 0, 0);
+ input_set_abs_params(function_device->input, ABS_PRESSURE, 0, 255, 0, 0);
+ input_set_abs_params(function_device->input, ABS_TOOL_WIDTH, 0, 15, 0, 0);
+
+#ifdef CONFIG_SYNA_MULTI_TOUCH
+ input_set_abs_params(function_device->input, ABS_MT_TOUCH_MAJOR, 0, 15, 0, 0);
+ input_set_abs_params(function_device->input, ABS_MT_TOUCH_MINOR, 0, 15, 0, 0);
+ input_set_abs_params(function_device->input, ABS_MT_ORIENTATION, 0, 1, 0, 0);
+ input_set_abs_params(function_device->input, ABS_MT_TRACKING_ID, 1, 10, 0, 0);
+ input_set_abs_params(function_device->input, ABS_MT_POSITION_X, xMin, xMax,
+ 0, 0);
+ input_set_abs_params(function_device->input, ABS_MT_POSITION_Y, yMin, yMax,
+ 0, 0);
+#endif
+}
+
+/* Initialize any function $11 specific params and settings - input
+ * settings, device settings, etc.
+ */
+int FN_11_init(struct rmi_function_device *function_device)
+{
+ struct f11_instance_data *instanceData = function_device->rfi->fndata;
+ int retval = 0;
+ struct rmi_f11_functiondata *functiondata = rmi_sensor_get_functiondata(function_device->sensor, RMI_F11_INDEX);
+ printk(KERN_DEBUG "%s: RMI4 F11 init", __func__);
+
+ /* TODO: Initialize these through some normal kernel mechanism.
+ */
+ instanceData->flipX = false;
+ instanceData->flipY = false;
+ instanceData->swap_axes = false;
+ instanceData->relReport = true;
+ instanceData->offsetX = instanceData->offsetY = 0;
+ instanceData->clipXLow = instanceData->clipYLow = 0;
+ /* TODO: 65536 should actually be the largest valid RMI4 position coordinate */
+ instanceData->clipXHigh = instanceData->clipYHigh = 65536;
+
+ /* Load any overrides that were specified via platform data.
+ */
+ if (functiondata) {
+ printk(KERN_DEBUG "%s: found F11 per function platformdata.", __func__);
+ instanceData->flipX = functiondata->flipX;
+ instanceData->flipY = functiondata->flipY;
+ instanceData->swap_axes = functiondata->swap_axes;
+ if (functiondata->offset) {
+ instanceData->offsetX = functiondata->offset->x;
+ instanceData->offsetY = functiondata->offset->y;
+ }
+ if (functiondata->clipX) {
+ if (functiondata->clipX->min >= functiondata->clipX->max) {
+ printk(KERN_WARNING "%s: Clip X min (%d) >= X clip max (%d) - ignored.",
+ __func__, functiondata->clipX->min, functiondata->clipX->max);
+ } else {
+ instanceData->clipXLow = functiondata->clipX->min;
+ instanceData->clipXHigh = functiondata->clipX->max;
+ }
+ }
+ if (functiondata->clipY) {
+ if (functiondata->clipY->min >= functiondata->clipY->max) {
+ printk(KERN_WARNING "%s: Clip Y min (%d) >= Y clip max (%d) - ignored.",
+ __func__, functiondata->clipY->min, functiondata->clipY->max);
+ } else {
+ instanceData->clipYLow = functiondata->clipY->min;
+ instanceData->clipYHigh = functiondata->clipY->max;
+ }
+ }
+ }
+
+ /* need to init the input abs params for the 2D */
+ set_bit(EV_ABS, function_device->input->evbit);
+ set_bit(EV_SYN, function_device->input->evbit);
+ set_bit(EV_KEY, function_device->input->evbit);
+
+ f11_set_abs_params(function_device);
+
+ printk(KERN_DEBUG "%s: Creating sysfs files.", __func__);
+ retval = device_create_file(&function_device->dev, &dev_attr_flip);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to create flip.", __func__);
+ return retval;
+ }
+ retval = device_create_file(&function_device->dev, &dev_attr_clip);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to create clip.", __func__);
+ return retval;
+ }
+ retval = device_create_file(&function_device->dev, &dev_attr_offset);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to create offset.", __func__);
+ return retval;
+ }
+ retval = device_create_file(&function_device->dev, &dev_attr_swap);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to create swap.", __func__);
+ return retval;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(FN_11_init);
+
+int FN_11_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr, unsigned int interruptCount)
+{
+ unsigned char fn11Queries[12]; /* TODO: Compute size correctly. */
+ unsigned char fn11Control[12]; /* TODO: Compute size correctly. */
+ int i;
+ unsigned short fn11InterruptOffset;
+ unsigned char fn11AbsDataBlockSize;
+ int fn11HasPinch, fn11HasFlick, fn11HasTap;
+ int fn11HasTapAndHold, fn11HasDoubleTap;
+ int fn11HasEarlyTap, fn11HasPress;
+ int fn11HasPalmDetect, fn11HasRotate;
+ int fn11HasRel;
+ unsigned char f11_egr_0, f11_egr_1;
+ unsigned int fn11AllDataBlockSize;
+ int retval = 0;
+ struct f11_instance_data *instanceData;
+
+ printk(KERN_DEBUG "%s: RMI4 F11 detect\n", __func__);
+
+ instanceData = kzalloc(sizeof(struct f11_instance_data), GFP_KERNEL);
+ if (!instanceData) {
+ printk(KERN_ERR "%s: Error allocating F11 instance data.\n", __func__);
+ return -ENOMEM;
+ }
+ instanceData->deviceInfo = kzalloc(sizeof(struct rmi_F11_device_query), GFP_KERNEL);
+ if (!instanceData->deviceInfo) {
+ printk(KERN_ERR "%s: Error allocating F11 device query.\n", __func__);
+ return -ENOMEM;
+ }
+ instanceData->sensorInfo = kzalloc(sizeof(struct rmi_F11_sensor_query), GFP_KERNEL);
+ if (!instanceData->sensorInfo) {
+ printk(KERN_ERR "%s: Error allocating F11 sensor query.\n", __func__);
+ return -ENOMEM;
+ }
+ rmifninfo->fndata = instanceData;
+
+ /* Store addresses - used elsewhere to read data,
+ * control, query, etc. */
+ rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr;
+ rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr;
+ rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr;
+ rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr;
+ rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt;
+ rmifninfo->funcDescriptor.functionNum = fndescr->functionNum;
+
+ rmifninfo->numSources = fndescr->interruptSrcCnt;
+
+ /* need to get number of fingers supported, data size, etc. -
+ to be used when getting data since the number of registers to
+ read depends on the number of fingers supported and data size. */
+ retval = rmi_read_multiple(rmifninfo->sensor, fndescr->queryBaseAddr, fn11Queries,
+ sizeof(fn11Queries));
+ if (retval) {
+ printk(KERN_ERR "%s: RMI4 function $11 detect: "
+ "Could not read function query registers 0x%x\n",
+ __func__, rmifninfo->funcDescriptor.queryBaseAddr);
+ return retval;
+ }
+
+ /* Extract device data. */
+ instanceData->deviceInfo->hasQuery9 = (fn11Queries[0] & 0x04) != 0;
+ instanceData->deviceInfo->numberOfSensors = (fn11Queries[0] & 0x07) + 1;
+ printk(KERN_DEBUG "%s: F11 device - %d sensors. Query 9? %d.", __func__, instanceData->deviceInfo->numberOfSensors, instanceData->deviceInfo->hasQuery9);
+
+ /* Extract sensor data. */
+ /* 2D data sources have only 3 bits for the number of fingers
+ supported - so the encoding is a bit wierd. */
+ instanceData->sensorInfo->numberOfFingers = 2; /* default number of fingers supported */
+ if ((fn11Queries[1] & 0x7) <= 4)
+ /* add 1 since zero based */
+ instanceData->sensorInfo->numberOfFingers = (fn11Queries[1] & 0x7) + 1;
+ else {
+ /* a value of 5 is up to 10 fingers - 6 and 7 are reserved
+ (shouldn't get these i int retval;n a normal 2D source). */
+ if ((fn11Queries[1] & 0x7) == 5)
+ instanceData->sensorInfo->numberOfFingers = 10;
+ }
+ instanceData->sensorInfo->configurable = (fn11Queries[1] & 0x80) != 0;
+ instanceData->sensorInfo->hasSensitivityAdjust = (fn11Queries[1] & 0x40) != 0;
+ instanceData->sensorInfo->hasGestures = (fn11Queries[1] & 0x20) != 0;
+ instanceData->sensorInfo->hasAbs = (fn11Queries[1] & 0x10) != 0;
+ instanceData->sensorInfo->hasRel = (fn11Queries[1] & 0x08) != 0;
+ instanceData->sensorInfo->absDataSize = fn11Queries[5] & 0x03;
+ printk(KERN_DEBUG "%s: Number of fingers: %d.", __func__, instanceData->sensorInfo->numberOfFingers);
+
+ /* Need to get interrupt info to be used later when handling
+ interrupts. */
+ rmifninfo->interruptRegister = interruptCount/8;
+
+ /* loop through interrupts for each source in fn $11 and or in a bit
+ to the interrupt mask for each. */
+ fn11InterruptOffset = interruptCount % 8;
+
+ for (i = fn11InterruptOffset;
+ i < ((fndescr->interruptSrcCnt & 0x7) + fn11InterruptOffset);
+ i++)
+ rmifninfo->interruptMask |= 1 << i;
+
+ /* Figure out just how much data we'll need to read. */
+ instanceData->fingerDataBufferSize = (instanceData->sensorInfo->numberOfFingers + 3) / 4;
+ /* One each for X and Y, one for LSB for X & Y, one for W, one for Z */
+ fn11AbsDataBlockSize = 5;
+ if (instanceData->sensorInfo->absDataSize != 0)
+ printk(KERN_WARNING "%s: Unrecognized abs data size %d ignored.", __func__, instanceData->sensorInfo->absDataSize);
+ if (instanceData->sensorInfo->hasAbs) {
+ instanceData->absDataSize = fn11AbsDataBlockSize;
+ instanceData->absDataOffset = instanceData->fingerDataBufferSize;
+ instanceData->fingerDataBufferSize += instanceData->sensorInfo->numberOfFingers * fn11AbsDataBlockSize;
+ }
+ if (instanceData->sensorInfo->hasRel) {
+ instanceData->relDataOffset = ((instanceData->sensorInfo->numberOfFingers + 3) / 4) +
+ /* absolute data, per finger times number of fingers */
+ (fn11AbsDataBlockSize * instanceData->sensorInfo->numberOfFingers);
+ instanceData->fingerDataBufferSize += instanceData->sensorInfo->numberOfFingers * 2;
+ }
+ if (instanceData->sensorInfo->hasGestures) {
+ instanceData->gestureDataOffset = instanceData->fingerDataBufferSize;
+ printk(KERN_WARNING "%s: WARNING Need to correctly compute gesture data location.", __func__);
+ }
+
+ /* need to determine the size of data to read - this depends on
+ conditions such as whether Relative data is reported and if Gesture
+ data is reported. */
+ f11_egr_0 = fn11Queries[7];
+ f11_egr_1 = fn11Queries[8];
+
+ /* Get info about what EGR data is supported, whether it has
+ Relative data supported, etc. */
+ fn11HasPinch = f11_egr_0 & 0x40;
+ fn11HasFlick = f11_egr_0 & 0x10;
+ fn11HasTap = f11_egr_0 & 0x01;
+ fn11HasTapAndHold = f11_egr_0 & 0x02;
+ fn11HasDoubleTap = f11_egr_0 & 0x04;
+ fn11HasEarlyTap = f11_egr_0 & 0x08;
+ fn11HasPress = f11_egr_0 & 0x20;
+ fn11HasPalmDetect = f11_egr_1 & 0x01;
+ fn11HasRotate = f11_egr_1 & 0x02;
+ fn11HasRel = fn11Queries[1] & 0x08;
+
+ /* Size of all data including finger status, absolute data for each
+ finger, relative data and EGR data */
+ fn11AllDataBlockSize =
+ /* finger status, four fingers per register */
+ ((instanceData->sensorInfo->numberOfFingers + 3) / 4) +
+ /* absolute data, per finger times number of fingers */
+ (fn11AbsDataBlockSize * instanceData->sensorInfo->numberOfFingers) +
+ /* two relative registers (if relative is being reported) */
+ 2 * fn11HasRel +
+ /* F11_2D_Data8 is only present if the egr_0
+ register is non-zero. */
+ !!(f11_egr_0) +
+ /* F11_2D_Data9 is only present if either egr_0 or
+ egr_1 registers are non-zero. */
+ (f11_egr_0 || f11_egr_1) +
+ /* F11_2D_Data10 is only present if EGR_PINCH or EGR_FLICK of
+ egr_0 reports as 1. */
+ !!(fn11HasPinch | fn11HasFlick) +
+ /* F11_2D_Data11 and F11_2D_Data12 are only present if
+ EGR_FLICK of egr_0 reports as 1. */
+ 2 * !!(fn11HasFlick);
+ instanceData->fingerDataBuffer = kcalloc(instanceData->fingerDataBufferSize, sizeof(unsigned char), GFP_KERNEL);
+ if (!instanceData->fingerDataBuffer) {
+ printk(KERN_ERR "%s: Failed to allocate finger data buffer.", __func__);
+ return -ENOMEM;
+ }
+
+ /* Grab a copy of the control registers. */
+ instanceData->controlRegisters = kzalloc(sizeof(struct rmi_F11_control), GFP_KERNEL);
+ if (!instanceData->controlRegisters) {
+ printk(KERN_ERR "%s: Error allocating F11 control registers.\n", __func__);
+ return -ENOMEM;
+ }
+ retval = rmi_read_multiple(rmifninfo->sensor, fndescr->controlBaseAddr,
+ fn11Control, sizeof(fn11Control));
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to read F11 control registers.", __func__);
+ return retval;
+ }
+ instanceData->controlRegisters->sensorMaxXPos = (((int) fn11Control[7] & 0x0F) << 8) + fn11Control[6];
+ instanceData->controlRegisters->sensorMaxYPos = (((int) fn11Control[9] & 0x0F) << 8) + fn11Control[8];
+ printk(KERN_DEBUG "%s: Max X %d Max Y %d", __func__, instanceData->controlRegisters->sensorMaxXPos, instanceData->controlRegisters->sensorMaxYPos);
+ return 0;
+}
+EXPORT_SYMBOL(FN_11_detect);
+
+static ssize_t rmi_fn_11_maxPos_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u %u\n", instance_data->controlRegisters->sensorMaxXPos, instance_data->controlRegisters->sensorMaxYPos);
+}
+
+static ssize_t rmi_fn_11_maxPos_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return -EPERM;
+}
+
+static ssize_t rmi_fn_11_flip_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u %u\n", instance_data->flipX, instance_data->flipY);
+}
+
+static ssize_t rmi_fn_11_flip_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+ unsigned int newX, newY;
+
+ printk(KERN_DEBUG "%s: Flip set to %s", __func__, buf);
+
+ if (sscanf(buf, "%u %u", &newX, &newY) != 2)
+ return -EINVAL;
+ if (newX < 0 || newX > 1 || newY < 0 || newY > 1)
+ return -EINVAL;
+ instance_data->flipX = newX;
+ instance_data->flipY = newY;
+
+ return count;
+}
+
+static ssize_t rmi_fn_11_swap_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u\n", instance_data->swap_axes);
+}
+
+static ssize_t rmi_fn_11_swap_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+ unsigned int newSwap;
+
+ printk(KERN_INFO "%s: Swap set to %s", __func__, buf);
+
+ if (sscanf(buf, "%u", &newSwap) != 1)
+ return -EINVAL;
+ if (newSwap < 0 || newSwap > 1)
+ return -EINVAL;
+ instance_data->swap_axes = newSwap;
+
+ f11_set_abs_params(fn);
+
+ return count;
+}
+
+static ssize_t rmi_fn_11_relreport_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u \n", instance_data->relReport);
+}
+
+static ssize_t rmi_fn_11_relreport_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+ unsigned int relRep;
+
+ printk(KERN_INFO "%s: relReport set to %s", __func__, buf);
+ if (sscanf(buf, "%u", &relRep) != 1)
+ return -EINVAL;
+ if (relRep < 0 || relRep > 1)
+ return -EINVAL;
+ instance_data->relReport = relRep;
+
+ return count;
+}
+
+static ssize_t rmi_fn_11_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%d %d\n", instance_data->offsetX, instance_data->offsetY);
+}
+
+static ssize_t rmi_fn_11_offset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+ int newX, newY;
+
+ printk(KERN_INFO "%s: Offset set to %s", __func__, buf);
+
+ if (sscanf(buf, "%d %d", &newX, &newY) != 2)
+ return -EINVAL;
+ instance_data->offsetX = newX;
+ instance_data->offsetY = newY;
+
+ return count;
+}
+
+static ssize_t rmi_fn_11_clip_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u %u %u %u\n",
+ instance_data->clipXLow, instance_data->clipXHigh,
+ instance_data->clipYLow, instance_data->clipYHigh);
+}
+
+static ssize_t rmi_fn_11_clip_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata;
+ unsigned int newXLow, newXHigh, newYLow, newYHigh;
+
+ printk(KERN_INFO "%s: Clip set to %s", __func__, buf);
+
+ if (sscanf(buf, "%u %u %u %u", &newXLow, &newXHigh, &newYLow, &newYHigh) != 4)
+ return -EINVAL;
+ if (newXLow < 0 || newXLow >= newXHigh || newYLow < 0 || newYLow >= newYHigh)
+ return -EINVAL;
+ instance_data->clipXLow = newXLow;
+ instance_data->clipXHigh = newXHigh;
+ instance_data->clipYLow = newYLow;
+ instance_data->clipYHigh = newYHigh;
+
+ f11_set_abs_params(fn);
+
+ return count;
+}
diff --git a/drivers/input/touchscreen/rmi_f11.h b/drivers/input/touchscreen/rmi_f11.h
new file mode 100644
index 0000000..0bf386a
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f11.h
@@ -0,0 +1,43 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $11 header.
+ * Copyright (c) 2007 - 2010, Synaptics Incorporated
+ *
+ * For every RMI4 function that has a data source - like 2D sensors,
+ * buttons, LEDs, GPIOs, etc. - the user will create a new rmi_function_xx.c
+ * file and add these functions to perform the config(), init(), report()
+ * and detect() functionality. The function pointers are then srored under
+ * the RMI function info and these functions will automatically be called by
+ * the global config(), init(), report() and detect() functions that will
+ * loop through all data sources and call the data sources functions using
+ * these functions pointed to by the function ptrs.
+ */
+/*
+ * 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.
+ *
+ *#############################################################################
+ */
+#ifndef _RMI_FUNCTION_11_H
+#define _RMI_FUNCTION_11_H
+
+void FN_11_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs);
+int FN_11_config(struct rmi_function_info *rmifninfo);
+int FN_11_init(struct rmi_function_device *function_device);
+int FN_11_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr,
+ unsigned int interruptCount);
+/* No attention function for Fn $11 */
+#endif
diff --git a/drivers/input/touchscreen/rmi_f19.c b/drivers/input/touchscreen/rmi_f19.c
new file mode 100644
index 0000000..145f958
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f19.c
@@ -0,0 +1,516 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $11 support for 2D.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+
+#include "rmi.h"
+#include "rmi_drvr.h"
+#include "rmi_bus.h"
+#include "rmi_sensor.h"
+#include "rmi_function.h"
+#include "rmi_f19.h"
+#include "rmi_platformdata.h"
+
+
+struct f19_instance_data {
+ struct rmi_F19_query *deviceInfo;
+ struct rmi_F19_control *controlRegisters;
+ bool *buttonDown;
+ unsigned char buttonDataBufferSize;
+ unsigned char *buttonDataBuffer;
+ unsigned char *buttonMap;
+ int fn19ControlRegisterSize;
+ int fn19regCountForBitPerButton;
+ int fn19btnUsageandfilterModeOffset;
+ int fn19intEnableOffset;
+ int fn19intEnableLen;
+ int fn19singleBtnCtrlLen;
+ int fn19singleBtnCtrlOffset;
+ int fn19sensorMapCtrlOffset;
+ int fn19sensorMapCtrlLen;
+ int fn19singleBtnSensOffset;
+ int fn19singleBtnSensLen;
+ int fn19globalSensOffset;
+ int fn19globalHystThreshOffset;
+};
+
+static ssize_t rmi_f19_buttonCount_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_f19_buttonCount_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+DEVICE_ATTR(buttonCount, 0444, rmi_f19_buttonCount_show, rmi_f19_buttonCount_store); /* RO attr */
+
+static ssize_t rmi_f19_buttonMap_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_f19_buttonMap_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+DEVICE_ATTR(buttonMap, 0664, rmi_f19_buttonMap_show, rmi_f19_buttonMap_store); /* RW attr */
+
+
+/*
+ * There is no attention function for F19 - it is left NULL
+ * in the function table so it is not called.
+ *
+ */
+
+
+/*
+ * This reads in a sample and reports the F19 source data to the
+ * input subsystem. It is used for both polling and interrupt driven
+ * operation. This is called a lot so don't put in any informational
+ * printks since they will slow things way down!
+ */
+void FN_19_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs)
+{
+ struct rmi_function_device *function_device;
+ struct f19_instance_data *instanceData;
+ int button;
+
+ instanceData = (struct f19_instance_data *) rmifninfo->fndata;
+
+ function_device = rmifninfo->function_device;
+
+ /* Read the button data. */
+
+ if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr,
+ instanceData->buttonDataBuffer, instanceData->buttonDataBufferSize)) {
+ printk(KERN_ERR "%s: Failed to read button data registers.\n", __func__);
+ return;
+ }
+
+ /* Generate events for buttons that change state. */
+ for (button = 0; button < instanceData->deviceInfo->buttonCount; button++) {
+ int buttonReg;
+ int buttonShift;
+ bool buttonStatus;
+
+ /* determine which data byte the button status is in */
+ buttonReg = button/4;
+ /* bit shift to get button's status */
+ buttonShift = button % 8;
+ buttonStatus = ((instanceData->buttonDataBuffer[buttonReg] >> buttonShift) & 0x01) != 0;
+
+ /* if the button state changed from the last time report it and store the new state */
+ if (buttonStatus != instanceData->buttonDown[button]) {
+ printk(KERN_DEBUG "%s: Button %d (code %d) -> %d.", __func__, button, instanceData->buttonMap[button], buttonStatus);
+ /* Generate an event here. */
+ input_report_key(function_device->input,
+ instanceData->buttonMap[button], buttonStatus);
+ instanceData->buttonDown[button] = buttonStatus;
+ }
+ }
+
+ input_sync(function_device->input); /* sync after groups of events */
+}
+EXPORT_SYMBOL(FN_19_inthandler);
+
+int FN_19_config(struct rmi_function_info *rmifninfo)
+{
+ int retval = 0;
+
+ pr_debug("%s: RMI4 F19 config\n", __func__);
+
+ /* TODO: Perform configuration. In particular, write any cached control
+ * register values to the device. */
+
+ return retval;
+}
+EXPORT_SYMBOL(FN_19_config);
+
+/* Initialize any F19 specific params and settings - input
+ * settings, device settings, etc.
+ */
+int FN_19_init(struct rmi_function_device *function_device)
+{
+ int i, retval = 0;
+ struct f19_instance_data *instance_data = function_device->rfi->fndata;
+ struct rmi_f19_functiondata *functiondata = rmi_sensor_get_functiondata(function_device->sensor, RMI_F19_INDEX);
+
+ printk(KERN_DEBUG "%s: RMI4 F19 init\n", __func__);
+
+ if (functiondata) {
+ if (functiondata->button_map) {
+ if (functiondata->button_map->nbuttons != instance_data->deviceInfo->buttonCount) {
+ printk(KERN_WARNING "%s: Platformdata button map size (%d) != number of buttons on device (%d) - ignored.", __func__, functiondata->button_map->nbuttons, instance_data->deviceInfo->buttonCount);
+ } else if (!functiondata->button_map->map) {
+ printk(KERN_WARNING "%s: Platformdata button map is missing!", __func__);
+ } else {
+ for (i = 0; i < functiondata->button_map->nbuttons; i++)
+ instance_data->buttonMap[i] = functiondata->button_map->map[i];
+ }
+ }
+ }
+
+ /* Set up any input events. */
+ set_bit(EV_SYN, function_device->input->evbit);
+ set_bit(EV_KEY, function_device->input->evbit);
+ /* set bits for each button...*/
+ for (i = 0; i < instance_data->deviceInfo->buttonCount; i++) {
+ set_bit(instance_data->buttonMap[i], function_device->input->keybit);
+ }
+
+ printk(KERN_DEBUG "%s: Creating sysfs files.", __func__);
+ retval = device_create_file(&function_device->dev, &dev_attr_buttonCount);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to create button count.", __func__);
+ return retval;
+ }
+
+ retval = device_create_file(&function_device->dev, &dev_attr_buttonMap);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to create button map.", __func__);
+ return retval;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(FN_19_init);
+
+int getControlRegisters(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr)
+{
+ struct f19_instance_data *instanceData;
+ unsigned char *fn19Control = NULL;
+ int retval = 0;
+
+ /* Get the instance data - it should have been allocated and stored in detect.*/
+ instanceData = rmifninfo->fndata;
+
+ /* Check to make sure instanceData is really there before using.*/
+ if (!instanceData) {
+ printk(KERN_ERR "%s: Error - instance data not initialized yet when getting fn19 control registers.\n", __func__);
+ return -EINVAL;
+ }
+
+ /* Allocate memory for the control registers. */
+ instanceData->controlRegisters = kzalloc(sizeof(struct rmi_F19_control), GFP_KERNEL);
+ if (!instanceData->controlRegisters) {
+ printk(KERN_ERR "%s: Error allocating F19 control registers.\n", __func__);
+ return -ENOMEM;
+ }
+
+ instanceData->fn19regCountForBitPerButton = (instanceData->deviceInfo->buttonCount + 7)/8;
+
+ /* Need to compute the amount of data to read since it varies with the
+ * number of buttons */
+ instanceData->fn19ControlRegisterSize = 1 /* 1 for filter mode and button usage bits */
+ + 2*instanceData->fn19regCountForBitPerButton /* interrupt enable bits and single button participation bits */
+ + 2*instanceData->deviceInfo->buttonCount /* sensormap registers + single button sensitivity registers */
+ + 2; /* 1 for global sensitivity adjust + 1 for global hysteresis threshold */
+
+ /* Allocate a temp memory buffer to read the control registers into */
+ fn19Control = kzalloc(instanceData->fn19ControlRegisterSize, GFP_KERNEL);
+ if (!fn19Control) {
+ printk(KERN_ERR "%s: Error allocating temp storage to read fn19 control info.\n", __func__);
+ return -ENOMEM;
+ }
+
+ /* Grab a copy of the control registers. */
+ retval = rmi_read_multiple(rmifninfo->sensor, fndescr->controlBaseAddr,
+ fn19Control, instanceData->fn19ControlRegisterSize);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed to read F19 control registers.", __func__);
+ return retval;
+ }
+
+ /* Copy over control registers data to the instance data */
+ instanceData->fn19btnUsageandfilterModeOffset = 0;
+ instanceData->controlRegisters->buttonUsage = fn19Control[instanceData->fn19btnUsageandfilterModeOffset] & 0x3;
+ instanceData->controlRegisters->filterMode = fn19Control[instanceData->fn19btnUsageandfilterModeOffset] & 0xc;
+
+ /* Fill in interrupt enable registers */
+ instanceData->fn19intEnableOffset = 1;
+ instanceData->fn19intEnableLen = instanceData->fn19regCountForBitPerButton;
+ instanceData->controlRegisters->intEnableRegisters = kzalloc(instanceData->fn19intEnableLen, GFP_KERNEL);
+ if (!instanceData->controlRegisters->intEnableRegisters) {
+ printk(KERN_ERR "%s: Error allocating storage for interrupt enable control info.\n", __func__);
+ return -ENOMEM;
+ }
+ memcpy(instanceData->controlRegisters->intEnableRegisters, &fn19Control[instanceData->fn19intEnableOffset],
+ instanceData->fn19intEnableLen);
+
+ /* Fill in single button control registers */
+ instanceData->fn19singleBtnCtrlOffset = instanceData->fn19intEnableOffset + instanceData->fn19intEnableLen;
+ instanceData->fn19singleBtnCtrlLen = instanceData->fn19regCountForBitPerButton;
+ instanceData->controlRegisters->singleButtonControl = kzalloc(instanceData->fn19singleBtnCtrlLen, GFP_KERNEL);
+ if (!instanceData->controlRegisters->singleButtonControl) {
+ printk(KERN_ERR "%s: Error allocating storage for single button participation control info.\n", __func__);
+ return -ENOMEM;
+ }
+ memcpy(instanceData->controlRegisters->singleButtonControl, &fn19Control[instanceData->fn19singleBtnCtrlOffset],
+ instanceData->fn19singleBtnCtrlLen);
+
+ /* Fill in sensor map registers */
+ instanceData->fn19sensorMapCtrlOffset = instanceData->fn19singleBtnCtrlOffset + instanceData->fn19singleBtnCtrlLen;
+ instanceData->fn19sensorMapCtrlLen = instanceData->deviceInfo->buttonCount;
+ instanceData->controlRegisters->sensorMap = kzalloc(instanceData->fn19sensorMapCtrlLen, GFP_KERNEL);
+ if (!instanceData->controlRegisters->sensorMap) {
+ printk(KERN_ERR "%s: Error allocating storage for sensor map control info.\n", __func__);
+ return -ENOMEM;
+ }
+ memcpy(instanceData->controlRegisters->sensorMap, &fn19Control[instanceData->fn19sensorMapCtrlOffset],
+ instanceData->fn19sensorMapCtrlLen);
+
+ /* Fill in single button sensitivity registers */
+ instanceData->fn19singleBtnSensOffset = instanceData->fn19sensorMapCtrlOffset + instanceData->fn19sensorMapCtrlLen;
+ instanceData->fn19singleBtnSensLen = instanceData->deviceInfo->buttonCount;
+ instanceData->controlRegisters->singleButtonSensitivity = kzalloc(instanceData->fn19singleBtnSensLen, GFP_KERNEL);
+ if (!instanceData->controlRegisters->intEnableRegisters) {
+ printk(KERN_ERR "%s: Error allocating storage for single button sensitivity control info.\n", __func__);
+ return -ENOMEM;
+ }
+ memcpy(instanceData->controlRegisters->singleButtonSensitivity, &fn19Control[instanceData->fn19singleBtnSensOffset],
+ instanceData->fn19singleBtnSensLen);
+
+ /* Fill in global sensitivity adjustment and global hysteresis threshold values */
+ instanceData->fn19globalSensOffset = instanceData->fn19singleBtnSensOffset + instanceData->fn19singleBtnSensLen;
+ instanceData->fn19globalHystThreshOffset = instanceData->fn19globalSensOffset + 1;
+ instanceData->controlRegisters->globalSensitivityAdjustment = fn19Control[instanceData->fn19globalSensOffset] & 0x1f;
+ instanceData->controlRegisters->globalHysteresisThreshold = fn19Control[instanceData->fn19globalHystThreshOffset] & 0x0f;
+
+ /* Free up temp storage that held copy of control registers */
+ kfree(fn19Control);
+
+ return 0;
+}
+
+int FN_19_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr, unsigned int interruptCount)
+{
+ unsigned char fn19queries[2];
+ int fn19ControlRegisterSize;
+ unsigned char *fn19Control = NULL;
+ int retval = 0;
+ int i;
+ struct f19_instance_data *instanceData;
+ int fn19InterruptOffset;
+
+ printk(KERN_DEBUG "%s: RMI4 F19 detect\n", __func__);
+
+ instanceData = kzalloc(sizeof(struct f19_instance_data), GFP_KERNEL);
+ if (!instanceData) {
+ printk(KERN_ERR "%s: Error allocating F19 instance data.\n", __func__);
+ return -ENOMEM;
+ }
+ instanceData->deviceInfo = kzalloc(sizeof(struct rmi_F19_query), GFP_KERNEL);
+ if (!instanceData->deviceInfo) {
+ printk(KERN_ERR "%s: Error allocating F19 device query.\n", __func__);
+ return -ENOMEM;
+ }
+ rmifninfo->fndata = instanceData;
+
+ /* Store addresses - used elsewhere to read data,
+ * control, query, etc. */
+ rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr;
+ rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr;
+ rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr;
+ rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr;
+ rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt;
+ rmifninfo->funcDescriptor.functionNum = fndescr->functionNum;
+
+ rmifninfo->numSources = fndescr->interruptSrcCnt;
+
+ /* need to get number of fingers supported, data size, etc. -
+ to be used when getting data since the number of registers to
+ read depends on the number of fingers supported and data size. */
+ retval = rmi_read_multiple(rmifninfo->sensor, fndescr->queryBaseAddr, fn19queries,
+ sizeof(fn19queries));
+ if (retval) {
+ printk(KERN_ERR "%s: RMI4 F19 detect: "
+ "Could not read function query registers 0x%x\n",
+ __func__, rmifninfo->funcDescriptor.queryBaseAddr);
+ return retval;
+ }
+
+ /* Extract device data. */
+ instanceData->deviceInfo->configurable = fn19queries[0] & 0x01;
+ instanceData->deviceInfo->hasSensitivityAdjust = fn19queries[0] & 0x02;
+ instanceData->deviceInfo->hasHysteresisThreshold = fn19queries[0] & 0x04;
+ instanceData->deviceInfo->buttonCount = fn19queries[1] & 0x01F;
+ printk(KERN_DEBUG "%s: F19 device - %d buttons...", __func__, instanceData->deviceInfo->buttonCount);
+
+ /* Need to get interrupt info to be used later when handling
+ interrupts. */
+ rmifninfo->interruptRegister = interruptCount/8;
+
+ /* loop through interrupts for each source in fn $11 and or in a bit
+ to the interrupt mask for each. */
+ fn19InterruptOffset = interruptCount % 8;
+
+ for (i = fn19InterruptOffset;
+ i < ((fndescr->interruptSrcCnt & 0x7) + fn19InterruptOffset);
+ i++)
+ rmifninfo->interruptMask |= 1 << i;
+
+ /* Figure out just how much data we'll need to read. */
+ instanceData->buttonDown = kcalloc(instanceData->deviceInfo->buttonCount, sizeof(bool), GFP_KERNEL);
+ if (!instanceData->buttonDown) {
+ printk(KERN_ERR "%s: Error allocating F19 button state buffer.\n", __func__);
+ return -ENOMEM;
+ }
+
+ instanceData->buttonDataBufferSize = (instanceData->deviceInfo->buttonCount + 7) / 8;
+ instanceData->buttonDataBuffer = kcalloc(instanceData->buttonDataBufferSize, sizeof(unsigned char), GFP_KERNEL);
+ if (!instanceData->buttonDataBuffer) {
+ printk(KERN_ERR "%s: Failed to allocate button data buffer.", __func__);
+ return -ENOMEM;
+ }
+
+ instanceData->buttonMap = kcalloc(instanceData->deviceInfo->buttonCount, sizeof(unsigned char), GFP_KERNEL);
+ if (!instanceData->buttonMap) {
+ printk(KERN_ERR "%s: Error allocating F19 button map.\n", __func__);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < instanceData->deviceInfo->buttonCount; i++)
+ instanceData->buttonMap[i] = BTN_0 + i; /* default values */
+
+ /* Grab the control register info. */
+ retval = getControlRegisters(rmifninfo, fndescr);
+ if (retval) {
+ printk(KERN_ERR "%s: Error %d getting fn19 control register info.\n", __func__, retval);
+ return retval;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(FN_19_detect);
+
+static ssize_t rmi_f19_buttonCount_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f19_instance_data *instance_data = (struct f19_instance_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u\n", instance_data->deviceInfo->buttonCount);
+}
+
+static ssize_t rmi_f19_buttonCount_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ /* Not allowed. */
+ return -EPERM;
+}
+
+static ssize_t rmi_f19_buttonMap_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f19_instance_data *instance_data = (struct f19_instance_data *)fn->rfi->fndata;
+ int i, len, totalLen = 0;
+
+ /* loop through each button map value and copy it's string representation into buf */
+ for (i = 0; i < instance_data->deviceInfo->buttonCount; i++) {
+ /* get next button mapping value and write it to buf */
+ len = sprintf(buf, "%u ", instance_data->buttonMap[i]);
+ /* bump up ptr to next location in buf if the sprintf was valid */
+ if (len > 0) {
+ buf += len;
+ totalLen += len;
+ }
+ }
+
+ return totalLen;
+}
+
+static ssize_t rmi_f19_buttonMap_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct f19_instance_data *instance_data = (struct f19_instance_data *)fn->rfi->fndata;
+ unsigned int button;
+ int i;
+ int retval = count;
+ int buttonCount = 0;
+ unsigned char *tmpButtonMap;
+
+ /* Do validation on the button map data passed in. */
+ /* Store button mappings into a temp buffer and then verify button count
+ and data prior to clearing out old button mappings and storing the new ones. */
+ tmpButtonMap = kzalloc(instance_data->deviceInfo->buttonCount, GFP_KERNEL);
+ if (!tmpButtonMap) {
+ printk(KERN_ERR "%s: Error allocating temp button map.\n", __func__);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < instance_data->deviceInfo->buttonCount && *buf != 0; i++) {
+ /* get next button mapping value and store and bump up to point to next item in buf */
+ sscanf(buf, "%u", &button);
+
+ /* Make sure the key is a valid key */
+ if (button > KEY_MAX) {
+ printk(KERN_ERR "%s: Error - button map for button %d is not a valid value 0x%x.\n",
+ __func__, i, button);
+ retval = -EINVAL;
+ goto err_ret;
+ }
+
+ tmpButtonMap[i] = button;
+ buttonCount++;
+
+ /* bump up buf to point to next item to read */
+ while (*buf != 0) {
+ buf++;
+ if (*(buf-1) == ' ')
+ break;
+ }
+ }
+
+ /* Make sure the button count matches */
+ if (buttonCount != instance_data->deviceInfo->buttonCount) {
+ printk(KERN_ERR "%s: Error - button map count of %d doesn't match device button count of %d.\n"
+ , __func__, buttonCount, instance_data->deviceInfo->buttonCount);
+ retval = -EINVAL;
+ goto err_ret;
+ }
+
+ /* Clear out old buttonMap data */
+ memset(instance_data->buttonMap, 0, buttonCount);
+
+ /* Loop through the temp buffer and copy the button event and set the key bit for the new mapping. */
+ for (i = 0; i < buttonCount; i++) {
+ instance_data->buttonMap[i] = tmpButtonMap[1];
+ set_bit(instance_data->buttonMap[i], fn->input->keybit);
+ }
+
+err_ret:
+ kfree(tmpButtonMap);
+
+ return retval;
+}
diff --git a/drivers/input/touchscreen/rmi_f19.h b/drivers/input/touchscreen/rmi_f19.h
new file mode 100644
index 0000000..41f3e4d
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f19.h
@@ -0,0 +1,43 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $11 header.
+ * Copyright (c) 2007 - 2010, Synaptics Incorporated
+ *
+ * For every RMI4 function that has a data source - like 2D sensors,
+ * buttons, LEDs, GPIOs, etc. - the user will create a new rmi_function_xx.c
+ * file and add these functions to perform the config(), init(), report()
+ * and detect() functionality. The function pointers are then srored under
+ * the RMI function info and these functions will automatically be called by
+ * the global config(), init(), report() and detect() functions that will
+ * loop through all data sources and call the data sources functions using
+ * these functions pointed to by the function ptrs.
+ */
+/*
+ * 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.
+ *
+ *#############################################################################
+ */
+#ifndef _RMI_FUNCTION_19_H
+#define _RMI_FUNCTION_19_H
+
+void FN_19_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs);
+int FN_19_config(struct rmi_function_info *rmifninfo);
+int FN_19_init(struct rmi_function_device *function_device);
+int FN_19_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr,
+ unsigned int interruptCount);
+/* No attention function for Fn $19 */
+#endif
diff --git a/drivers/input/touchscreen/rmi_f34.c b/drivers/input/touchscreen/rmi_f34.c
new file mode 100644
index 0000000..47ae5eb
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f34.c
@@ -0,0 +1,552 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $34 support for sensor
+ * firmware reflashing.
+ *
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/sysfs.h>
+#include <linux/math64.h>
+#include "rmi_drvr.h"
+#include "rmi_bus.h"
+#include "rmi_sensor.h"
+#include "rmi_function.h"
+#include "rmi_f34.h"
+
+/* data specific to fn $34 that needs to be kept around */
+struct rmi_fn_34_data {
+ unsigned char status;
+ unsigned char cmd;
+ unsigned short bootloaderid;
+ unsigned short blocksize;
+};
+
+
+static ssize_t rmi_fn_34_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_34_status_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+
+static ssize_t rmi_fn_34_cmd_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_34_cmd_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_34_data_read(struct kobject *kobj,
+ struct bin_attribute *attributes,
+ char *buf, loff_t pos, size_t count);
+
+static ssize_t rmi_fn_34_data_write(struct kobject *kobj,
+ struct bin_attribute *attributes,
+ char *buf, loff_t pos, size_t count);
+
+static ssize_t rmi_fn_34_bootloaderid_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_34_bootloaderid_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+static ssize_t rmi_fn_34_blocksize_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static ssize_t rmi_fn_34_blocksize_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+
+/* define the device attributes using DEVICE_ATTR macros */
+DEVICE_ATTR(status, 0444, rmi_fn_34_status_show, rmi_fn_34_status_store); /* RO attr */
+DEVICE_ATTR(cmd, 0664, rmi_fn_34_cmd_show, rmi_fn_34_cmd_store); /* RW attr */
+DEVICE_ATTR(bootloaderid, 0644, rmi_fn_34_bootloaderid_show, rmi_fn_34_bootloaderid_store); /* RW attr */
+DEVICE_ATTR(blocksize, 0444, rmi_fn_34_blocksize_show, rmi_fn_34_blocksize_store); /* RO attr */
+
+
+struct bin_attribute dev_attr_data = {
+ .attr = {
+ .name = "data",
+ .mode = 0644
+ },
+ .size = 0,
+ .read = rmi_fn_34_data_read,
+ .write = rmi_fn_34_data_write,
+};
+
+/* Helper fn to convert from processor specific data to our firmware specific endianness.
+ * TODO: Should we use ntohs or something like that?
+ */
+void copyEndianAgnostic(unsigned char *dest, unsigned short src)
+{
+ dest[0] = src%0x100;
+ dest[1] = src/0x100;
+}
+
+/*.
+ * The interrupt handler for Fn $34.
+ */
+void FN_34_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs)
+{
+ unsigned int status;
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)rmifninfo->fndata;
+
+ /* Read the Fn $34 status register to see whether the previous command executed OK */
+ /* inform user space - through a sysfs param. */
+ if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr+3,
+ (unsigned char *)&status, 1)) {
+ printk(KERN_ERR "%s : Could not read status from 0x%x\n",
+ __func__, rmifninfo->funcDescriptor.dataBaseAddr+3);
+ status = 0xff; /* failure */
+ }
+
+ /* set a sysfs value that the user mode can read - only upper 4 bits are the status */
+ fn34data->status = status & 0xf0; /* successful is $80, anything else is failure */
+}
+EXPORT_SYMBOL(FN_34_inthandler);
+
+void FN_34_attention(struct rmi_function_info *rmifninfo)
+{
+
+}
+EXPORT_SYMBOL(FN_34_attention);
+
+int FN_34_config(struct rmi_function_info *rmifninfo)
+{
+ pr_debug("%s: RMI4 function $34 config\n", __func__);
+ return 0;
+}
+EXPORT_SYMBOL(FN_34_config);
+
+
+int FN_34_init(struct rmi_function_device *function_device)
+{
+ int retval = 0;
+ unsigned char uData[2];
+ struct rmi_function_info *rmifninfo = function_device->rfi;
+ struct rmi_fn_34_data *fn34data;
+
+ pr_debug("%s: RMI4 function $34 init\n", __func__);
+
+ /* Here we will need to set up sysfs files for Bootloader ID and Block size */
+ fn34data = kzalloc(sizeof(struct rmi_fn_34_data), GFP_KERNEL);
+ if (!fn34data) {
+ printk(KERN_ERR "%s: Error allocating memeory for rmi_fn_34_data.\n", __func__);
+ return -ENOMEM;
+ }
+ rmifninfo->fndata = (void *)fn34data;
+
+ /* set up sysfs file for Bootloader ID. */
+ if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_bootloaderid.attr) < 0) {
+ printk(KERN_ERR "%s: Failed to create sysfs file for fn 34 bootloaderid.\n", __func__);
+ return -ENODEV;
+ }
+
+ /* set up sysfs file for Block Size. */
+ if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_blocksize.attr) < 0) {
+ printk(KERN_ERR "%s: Failed to create sysfs file for fn 34 blocksize.\n", __func__);
+ return -ENODEV;
+ }
+
+ /* get the Bootloader ID and Block Size and store in the sysfs attributes. */
+ retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.queryBaseAddr,
+ uData, 2);
+ if (retval) {
+ printk(KERN_ERR "%s : Could not read bootloaderid from 0x%x\n",
+ __func__, function_device->function->functionQueryBaseAddr);
+ return retval;
+ }
+ /* need to convert from our firmware storage to processore specific data */
+ fn34data->bootloaderid = (unsigned int)uData[0] + (unsigned int)uData[1]*0x100;
+
+ retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.queryBaseAddr+3,
+ uData, 2);
+ if (retval) {
+ printk(KERN_ERR "%s : Could not read block size from 0x%x\n",
+ __func__, rmifninfo->funcDescriptor.queryBaseAddr+3);
+ return retval;
+ }
+ /* need to convert from our firmware storage to processor specific data */
+ fn34data->blocksize = (unsigned int)uData[0] + (unsigned int)uData[1]*0x100;
+
+ /* set up sysfs file for status. */
+ if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_status.attr) < 0) {
+ printk(KERN_ERR "%s: Failed to create sysfs file for fn 34 status.\n", __func__);
+ return -ENODEV;
+ }
+
+ /* Also, sysfs will need to have a file set up to distinguish between commands - like
+ Config write/read, Image write/verify.*/
+ /* set up sysfs file for command code. */
+ if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_cmd.attr) < 0) {
+ printk(KERN_ERR "%s: Failed to create sysfs file for fn 34 cmd.\n", __func__);
+ return -ENODEV;
+ }
+
+ /* We will also need a sysfs file for the image/config block to write or read.*/
+ /* set up sysfs bin file for binary data block. Since the image is already in our format
+ there is no need to convert the data for endianess. */
+ if (sysfs_create_bin_file(&function_device->dev.kobj, &dev_attr_data) < 0) {
+ printk(KERN_ERR "%s: Failed to create sysfs file for fn 34 data.\n", __func__);
+ return -ENODEV;
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(FN_34_init);
+
+int FN_34_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr, unsigned int interruptCount)
+{
+ int i;
+ int InterruptOffset;
+ int retval = 0;
+
+ pr_debug("%s: RMI4 function $34 detect\n", __func__);
+ if (rmifninfo->sensor == NULL) {
+ printk(KERN_ERR "%s: NULL sensor passed in!", __func__);
+ return -EINVAL;
+ }
+
+ /* Store addresses - used elsewhere to read data,
+ * control, query, etc. */
+ rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr;
+ rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr;
+ rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr;
+ rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr;
+ rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt;
+ rmifninfo->funcDescriptor.functionNum = fndescr->functionNum;
+
+ rmifninfo->numSources = fndescr->interruptSrcCnt;
+
+ /* Need to get interrupt info to be used later when handling
+ interrupts. */
+ rmifninfo->interruptRegister = interruptCount/8;
+
+ /* loop through interrupts for each source and or in a bit
+ to the interrupt mask for each. */
+ InterruptOffset = interruptCount % 8;
+
+ for (i = InterruptOffset;
+ i < ((fndescr->interruptSrcCnt & 0x7) + InterruptOffset);
+ i++) {
+ rmifninfo->interruptMask |= 1 << i;
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(FN_34_detect);
+
+static ssize_t rmi_fn_34_bootloaderid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u\n", fn34data->bootloaderid);
+}
+
+static ssize_t rmi_fn_34_bootloaderid_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int error;
+ unsigned long val;
+ unsigned char uData[2];
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+
+ /* need to convert the string data to an actual value */
+ error = strict_strtoul(buf, 10, &val);
+
+ if (error)
+ return error;
+
+ fn34data->bootloaderid = val;
+
+ /* Write the Bootloader ID key data back to the first two Block Data registers
+ (F34_Flash_Data2.0 and F34_Flash_Data2.1).*/
+ copyEndianAgnostic(uData, (unsigned short)val);
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr,
+ uData, 2);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write bootloader id to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr);
+ return error;
+ }
+
+ return count;
+}
+
+static ssize_t rmi_fn_34_blocksize_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u\n", fn34data->blocksize);
+}
+
+static ssize_t rmi_fn_34_blocksize_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ /* Block Size is RO so we shouldn't do anything if the
+ user space writes to the sysfs file. */
+
+ return -EPERM;
+}
+
+static ssize_t rmi_fn_34_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u\n", fn34data->status);
+}
+
+static ssize_t rmi_fn_34_status_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ /* Status is RO so we shouldn't do anything if the user
+ app writes to the sysfs file. */
+ return -EPERM;
+}
+
+static ssize_t rmi_fn_34_cmd_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+
+ return sprintf(buf, "%u\n", fn34data->cmd);
+}
+
+static ssize_t rmi_fn_34_cmd_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+ unsigned long val;
+ unsigned char cmd;
+ int error;
+
+ /* need to convert the string data to an actual value */
+ error = strict_strtoul(buf, 10, &val);
+
+ if (error)
+ return error;
+
+ fn34data->cmd = val;
+
+ /* determine the proper command to issue.
+ */
+ switch (val) {
+ case ENABLE_FLASH_PROG:
+ /* Issue a Flash Program Enable ($0F) command to the Flash Command
+ (F34_Flash_Data3, bits 3:0) field.*/
+ cmd = 0x0F;
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3,
+ (unsigned char *)&cmd, 1);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write Flash Program Enable cmd to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+3);
+ return error;
+ }
+ break;
+
+ case ERASE_ALL:
+ /* Issue a Erase All ($03) command to the Flash Command
+ (F34_Flash_Data3, bits 3:0) field.*/
+ cmd = 0x03;
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3,
+ (unsigned char *)&cmd, 1);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write Erase All cmd to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+3);
+ return error;
+ }
+ break;
+
+ case ERASE_CONFIG:
+ /* Issue a Erase Configuration ($07) command to the Flash Command
+ (F34_Flash_Data3, bits 3:0) field.*/
+ cmd = 0x07;
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3,
+ (unsigned char *)&cmd, 1);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write Erase Configuration cmd to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+3);
+ return error;
+ }
+ break;
+
+ case WRITE_FW_BLOCK:
+ /* Issue a Write Firmware Block ($02) command to the Flash Command
+ (F34_Flash_Data3, bits 3:0) field.*/
+ cmd = 0x02;
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3,
+ (unsigned char *)&cmd, 1);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write Write Firmware Block cmd to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+3);
+ return error;
+ }
+ break;
+
+ case WRITE_CONFIG_BLOCK:
+ /* Issue a Write Config Block ($06) command to the Flash Command
+ (F34_Flash_Data3, bits 3:0) field.*/
+ cmd = 0x06;
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3,
+ (unsigned char *)&cmd, 1);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write Write Config Block cmd to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+3);
+ return error;
+ }
+ break;
+
+ case READ_CONFIG_BLOCK:
+ /* Issue a Read Config Block ($05) command to the Flash Command
+ (F34_Flash_Data3, bits 3:0) field.*/
+ cmd = 0x05;
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3,
+ (unsigned char *)&cmd, 1);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write Read Config Block cmd to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+3);
+ return error;
+ }
+ break;
+
+ case DISABLE_FLASH_PROG:
+ /* Issue a reset command ($01) - this will reboot the sensor and ATTN will now go to
+ the Fn $01 instead of the Fn $34 since the sensor will no longer be in Flash mode. */
+ cmd = 0x01;
+ /*if ((error = rmi_write_multiple(fn->sensor, fn->sensor->sensorCommandBaseAddr,
+ (unsigned char *)&cmd, 1))) {
+ printk(KERN_ERR "%s : Could not write Reset cmd to 0x%x\n",
+ __func__, fn->sensor->sensorCommandBaseAddr);
+ return error;
+ }*/
+ break;
+
+ default:
+ pr_debug("%s: RMI4 function $34 - unknown command.\n", __func__);
+ break;
+ }
+
+ return count;
+}
+
+static ssize_t rmi_fn_34_data_read(struct kobject *kobj,
+ struct bin_attribute *attributes,
+ char *buf, loff_t pos, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ int error;
+
+ /* TODO: add check for count to verify it's the correct blocksize */
+
+ /* read the data from flash into buf. */
+ /* the app layer will be blocked at reading from the sysfs file. */
+ /* when we return the count (or error if we fail) the app will resume. */
+ error = rmi_read_multiple(fn->sensor, fn->function->functionDataBaseAddr+pos,
+ (unsigned char *)buf, count);
+ if (error) {
+ printk(KERN_ERR "%s : Could not read data from 0x%llx\n",
+ __func__, fn->function->functionDataBaseAddr+pos);
+ return error;
+ }
+
+ return count;
+}
+
+static ssize_t rmi_fn_34_data_write(struct kobject *kobj,
+ struct bin_attribute *attributes,
+ char *buf, loff_t pos, size_t count)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct rmi_function_device *fn = dev_get_drvdata(dev);
+ struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata;
+ unsigned int blocknum;
+ int error;
+
+ /* write the data from buf to flash. */
+ /* the app layer will be blocked at writing to the sysfs file. */
+ /* when we return the count (or error if we fail) the app will resume. */
+
+ /* TODO: Add check on count - if non-zero veriy it's the correct blocksize */
+
+ /* Verify that the byte offset is always aligned on a block boundary and if not
+ return an error. We can't just use the mod operator % and do a (pos % fn34data->blocksize) because of a gcc
+ bug that results in undefined symbols. So we have to compute it the hard
+ way. Grumble. */
+ unsigned int remainder;
+ div_u64_rem(pos, fn34data->blocksize, &remainder);
+ if (remainder) {
+ printk(KERN_ERR "%s : Invalid byte offset of %llx leads to invalid block number.\n",
+ __func__, pos);
+ return -EINVAL;
+ }
+
+ /* Compute the block number using the byte offset (pos) and the block size.
+ once again, we can't just do a divide due to a gcc bug. */
+ blocknum = div_u64(pos, fn34data->blocksize);
+
+ /* Write the block number first */
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr,
+ (unsigned char *)&blocknum, 2);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write block number to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr);
+ return error;
+ }
+
+ /* Write the data block - only if the count is non-zero */
+ if (count) {
+ error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+2,
+ (unsigned char *)buf, count);
+ if (error) {
+ printk(KERN_ERR "%s : Could not write block data to 0x%x\n",
+ __func__, fn->function->functionDataBaseAddr+2);
+ return error;
+ }
+ }
+
+ return count;
+}
diff --git a/drivers/input/touchscreen/rmi_f34.h b/drivers/input/touchscreen/rmi_f34.h
new file mode 100644
index 0000000..48293e3
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_f34.h
@@ -0,0 +1,50 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function $34 header.
+ * Copyright (c) 2007 - 2011, Synaptics Incorporated
+ *
+ * There is only one function $34 for each RMI4 sensor. This will be
+ * the function that is used to reflash the firmware and get the
+ * boot loader address and the boot image block size.
+ *
+ *
+ */
+/*
+ * 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.
+ *
+ *#############################################################################
+ */
+#ifndef _RMI_FUNCTION_34_H
+#define _RMI_FUNCTION_34_H
+
+/* define fn $34 commands */
+#define WRITE_FW_BLOCK 2
+#define ERASE_ALL 3
+#define READ_CONFIG_BLOCK 5
+#define WRITE_CONFIG_BLOCK 6
+#define ERASE_CONFIG 7
+#define ENABLE_FLASH_PROG 15
+#define DISABLE_FLASH_PROG 16
+
+void FN_34_inthandler(struct rmi_function_info *rmifninfo,
+ unsigned int assertedIRQs);
+int FN_34_config(struct rmi_function_info *rmifninfo);
+int FN_34_init(struct rmi_function_device *function_device);
+int FN_34_detect(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr,
+ unsigned int interruptCount);
+void FN_34_attention(struct rmi_function_info *rmifninfo);
+
+#endif
diff --git a/drivers/input/touchscreen/rmi_function.c b/drivers/input/touchscreen/rmi_function.c
new file mode 100644
index 0000000..f9b9833
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_function.c
@@ -0,0 +1,320 @@
+/**
+ * Synaptics Register Mapped Interface (RMI4) - RMI Function 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 functionname[10] = "fn";
+
+#include <linux/kernel.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 "rmi_drvr.h"
+#include "rmi_function.h"
+#include "rmi_bus.h"
+#include "rmi_sensor.h"
+#include "rmi_f01.h"
+#include "rmi_f11.h"
+#include "rmi_f19.h"
+#include "rmi_f34.h"
+
+/* Each time a new RMI4 function support is added the developer needs to
+bump the number of supported functions and add the info for
+that RMI4 function to the array along with pointers to the report,
+config, init and detect functions that they coded in rmi_fxx.c
+and rmi_fxx.h - where xx is the RMI4 function number in hex for the new
+RMI4 data source function. The information for the RMI4 functions is
+obtained from the RMI4 specification document.
+ */
+#define rmi4_num_supported_data_src_fns 4
+
+/* supported RMI4 functions list - controls what we
+ * will provide support for - if it's not in the list then
+ * the developer needs to add support functions for it.*/
+static LIST_HEAD(fns_list);
+static DEFINE_MUTEX(fns_mutex);
+
+/* NOTE: Developer - add in any new RMI4 fn data info - function number
+ * and ptrs to report, config, init and detect functions. This data is
+ * used to point to the functions that need to be called to config, init,
+ * detect and report data for the new RMI4 function. Refer to the RMI4
+ * specification for information on RMI4 functions.
+ */
+/* TODO: This will eventually go away, and each function will be an independent
+ * module. */
+static struct rmi_functions_data
+ rmi4_supported_data_src_functions[rmi4_num_supported_data_src_fns] = {
+ /* Fn $11 - 2D sensing */
+ {.functionNumber = 0x11, .inthandlerFn = FN_11_inthandler, .configFn = FN_11_config, .initFn = FN_11_init, .detectFn = FN_11_detect, .attnFn = NULL},
+ /* Fn $01 - device control */
+ {.functionNumber = 0x01, .inthandlerFn = FN_01_inthandler, .configFn = FN_01_config, .initFn = FN_01_init, .detectFn = FN_01_detect, .attnFn = FN_01_attention},
+ /* Fn $19 - buttons */
+ {.functionNumber = 0x19, .inthandlerFn = FN_19_inthandler, .configFn = FN_19_config, .initFn = FN_19_init, .detectFn = FN_19_detect, .attnFn = NULL},
+ /* Fn $34 - firmware reflash */
+ {.functionNumber = 0x34, .inthandlerFn = FN_34_inthandler, .configFn = FN_34_config, .initFn = FN_34_init, .detectFn = FN_34_detect, .attnFn = FN_34_attention},
+};
+
+
+/* This function is here to provide a way for external modules to access the
+ * functions list. It will try to find a matching function base on the passed
+ * in RMI4 function number and return the pointer to the struct rmi_functions
+ * if a match is found or NULL if not found.
+ */
+struct rmi_functions *rmi_find_function(int functionNum)
+{
+ struct rmi_functions *fn;
+ bool found = false;
+
+ list_for_each_entry(fn, &fns_list, link) {
+ if (functionNum == fn->functionNum) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ return NULL;
+ else
+ return fn;
+}
+EXPORT_SYMBOL(rmi_find_function);
+
+
+static void rmi_function_config(struct rmi_function_device *function)
+{
+ printk(KERN_DEBUG "%s: rmi_function_config", __func__);
+
+}
+
+/**
+ * This is the probe function passed to the RMI4 subsystem that gives us a
+ * chance to recognize an RMI4 function.
+ */
+static int rmi_function_probe(struct rmi_function_driver *function)
+{
+ struct rmi_phys_driver *rpd;
+
+ rpd = function->rpd;
+
+ if (!rpd) {
+ printk(KERN_ERR "%s: Invalid rmi physical driver - null ptr.", __func__);
+ return 0;
+ }
+
+ return 1;
+}
+
+/** Just a stub for now.
+ */
+static int rmi_function_suspend(struct device *dev, pm_message_t state)
+{
+ printk(KERN_INFO "%s: function suspend called.", __func__);
+ return 0;
+}
+
+/** Just a stub for now.
+ */
+static int rmi_function_resume(struct device *dev)
+{
+ printk(KERN_INFO "%s: function resume called.", __func__);
+ return 0;
+}
+
+int rmi_function_register_driver(struct rmi_function_driver *drv, int fnNumber)
+{
+ int retval;
+ char *drvrname;
+
+ printk(KERN_INFO "%s: Registering function driver for F%02x.\n", __func__, fnNumber);
+
+ retval = 0;
+
+ /* Create a function device and function driver for this Fn */
+ drvrname = kzalloc(sizeof(functionname) + 4, GFP_KERNEL);
+ if (!drvrname) {
+ printk(KERN_ERR "%s: Error allocating memeory for rmi_function_driver name.\n", __func__);
+ return -ENOMEM;
+ }
+ sprintf(drvrname, "fn%02x", fnNumber);
+
+ drv->drv.name = drvrname;
+ drv->module = drv->drv.owner;
+
+ drv->drv.suspend = rmi_function_suspend;
+ drv->drv.resume = rmi_function_resume;
+
+ /* register the sensor driver */
+ retval = driver_register(&drv->drv);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed driver_register %d\n",
+ __func__, retval);
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(rmi_function_register_driver);
+
+void rmi_function_unregister_driver(struct rmi_function_driver *drv)
+{
+ printk(KERN_INFO "%s: Unregistering function driver.\n", __func__);
+
+ driver_unregister(&drv->drv);
+}
+EXPORT_SYMBOL(rmi_function_unregister_driver);
+
+int rmi_function_register_device(struct rmi_function_device *function_device, int fnNumber)
+{
+ struct input_dev *input;
+ int retval;
+
+ printk(KERN_INFO "%s: Registering function device for F%02x.\n", __func__, fnNumber);
+
+ retval = 0;
+
+ /* make name - fn11, fn19, etc. */
+ dev_set_name(&function_device->dev, "%sfn%02x", function_device->sensor->drv.name, fnNumber);
+ dev_set_drvdata(&function_device->dev, function_device);
+ retval = device_register(&function_device->dev);
+ if (retval) {
+ printk(KERN_ERR "%s: Failed device_register for function device.\n",
+ __func__);
+ return retval;
+ }
+
+ input = input_allocate_device();
+ if (input == NULL) {
+ printk(KERN_ERR "%s: Failed to allocate memory for a "
+ "new input device.\n",
+ __func__);
+ return -ENOMEM;
+ }
+
+ input->name = dev_name(&function_device->dev);
+ input->phys = "rmi_function";
+ function_device->input = input;
+
+
+ /* init any input specific params for this function */
+ function_device->rmi_funcs->init(function_device);
+
+ retval = input_register_device(input);
+
+ if (retval) {
+ printk(KERN_ERR "%s: Failed input_register_device.\n",
+ __func__);
+ return retval;
+ }
+
+
+ rmi_function_config(function_device);
+
+ return retval;
+}
+EXPORT_SYMBOL(rmi_function_register_device);
+
+void rmi_function_unregister_device(struct rmi_function_device *dev)
+{
+ printk(KERN_INFO "%s: Unregistering function device.n", __func__);
+
+ input_unregister_device(dev->input);
+ device_unregister(&dev->dev);
+}
+EXPORT_SYMBOL(rmi_function_unregister_device);
+
+static int __init rmi_function_init(void)
+{
+ struct rmi_functions_data *rmi4_fn;
+ int i;
+
+ printk(KERN_DEBUG "%s: RMI Function Init\n", __func__);
+
+ /* Initialize global list of RMI4 Functions.
+ We need to add the supported RMI4 funcions so that we will have
+ pointers to the associated functions for init, config, report and
+ detect. See rmi.h for more details. The developer will add a new
+ RMI4 function number in the array in rmi_drvr.h, then add a new file to
+ the build (called rmi_fXX.c where XX is the hex number for
+ the added RMI4 function). The rest should be automatic.
+ */
+
+ /* for each function number defined in rmi.h creat a new rmi_function
+ struct and initialize the pointers to the servicing functions and then
+ add it into the global list for function support.
+ */
+ for (i = 0; i < rmi4_num_supported_data_src_fns; i++) {
+ /* Add new rmi4 function struct to list */
+ struct rmi_functions *fn = kzalloc(sizeof(*fn), GFP_KERNEL);
+ if (!fn) {
+ printk(KERN_ERR "%s: could not allocate memory "
+ "for rmi_function struct for function 0x%x\n",
+ __func__,
+ rmi4_supported_data_src_functions[i].functionNumber);
+ return -ENOMEM;
+ } else {
+
+ rmi4_fn = &rmi4_supported_data_src_functions[i];
+ fn->functionNum = rmi4_fn->functionNumber;
+ /* Fill in ptrs to functions. The functions are
+ linked in from a file called rmi_fxx.c
+ where xx is the hex number of the RMI4 function
+ from the RMI4 spec. Also, the function prototypes
+ need to be added to rmi_fxx.h - also where
+ xx is the hex number of the RMI4 function. So
+ that you don't get compile errors and that new
+ header needs to be included in the rmi_function.h
+ */
+ fn->inthandler = rmi4_fn->inthandlerFn;
+ fn->config = rmi4_fn->configFn;
+ fn->init = rmi4_fn->initFn;
+ fn->detect = rmi4_fn->detectFn;
+ fn->attention = rmi4_fn->attnFn;
+
+ /* Add the new fn to the global list */
+ mutex_lock(&fns_mutex);
+ list_add_tail(&fn->link, &fns_list);
+ mutex_unlock(&fns_mutex);
+ }
+ }
+
+ return 0;
+}
+
+static void __exit rmi_function_exit(void)
+{
+ printk(KERN_DEBUG "%s: RMI Function Exit\n", __func__);
+}
+
+
+module_init(rmi_function_init);
+module_exit(rmi_function_exit);
+
+MODULE_AUTHOR("Synaptics, Inc.");
+MODULE_DESCRIPTION("RMI4 Function Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/rmi_function.h b/drivers/input/touchscreen/rmi_function.h
new file mode 100644
index 0000000..801609b
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_function.h
@@ -0,0 +1,213 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) Function Device Header File.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#ifndef _RMI_FUNCTION_H
+#define _RMI_FUNCTION_H
+
+#include <linux/input.h>
+#include <linux/device.h>
+
+
+/* For each function present on the RMI device, there will be a corresponding
+ * entry in the functions list of the rmi_sensor_driver structure. This entry
+ * gives information about the number of data sources and the number of data
+ * registers associated with the function.
+ */
+struct rmi_function_info {
+ /* The sensor this function belongs to.
+ */
+ struct rmi_sensor_driver *sensor;
+
+ /* A device associated with this function.
+ */
+ struct rmi_function_device *function_device;
+
+ unsigned char functionNum;
+
+ /* This is the number of data sources associated with the function.*/
+ unsigned char numSources;
+
+ /* This is the number of data registers to read.*/
+ unsigned char dataRegBlockSize;
+
+ /* This is the interrupt register and mask - needed for enabling the
+ * interrupts and for checking what source had caused the attention line
+ * interrupt.
+ */
+ unsigned char interruptRegister;
+ unsigned char interruptMask;
+
+ /* This is the RMI function descriptor associated with this function.
+ * It contains the Base addresses for the functions query, command,
+ * control, and data registers.
+ */
+ struct rmi_function_descriptor funcDescriptor;
+
+ /* pointer to data specific to a functions implementation. */
+ void *fndata;
+
+ /* A list of the function information.
+ * This list uses the standard kernel linked list implementation.
+ * Documentation on on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head link;
+};
+
+
+/* This struct is for creating a list of RMI4 functions that have data sources
+associated with them. This is to facilitate adding new support for other
+data sources besides 2D sensors.
+To add a new data source support, the developer will create a new file
+and add these 4 functions below with FN$## in front of the names - where
+## is the hex number for the function taken from the RMI4 specification.
+
+The function number will be associated with this and later will be used to
+match the RMI4 function to the 4 functions for that RMI4 function number.
+The user will also have to add code that adds the new rmi_functions item
+to the global list of RMI4 functions and stores the pointers to the 4
+functions in the function pointers.
+ */
+struct rmi_functions {
+ unsigned char functionNum;
+
+ /* Pointers to function specific functions for interruptHandler, config, init
+ , detect and attention. */
+ /* These ptrs. need to be filled in for every RMI4 function that has
+ data source(s) associated with it - like fn $11 (2D sensors),
+ fn $19 (buttons), etc. Each RMI4 function that has data sources
+ will be added into a list that is used to match the function
+ number against the number stored here.
+ */
+ /* The sensor implementation will call this whenever and IRQ is
+ * dispatched that this function is interested in.
+ */
+ void (*inthandler)(struct rmi_function_info *rfi, unsigned int assertedIRQs);
+
+ int (*config)(struct rmi_function_info *rmifninfo);
+ int (*init)(struct rmi_function_device *function_device);
+ int (*detect)(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr,
+ unsigned int interruptCount);
+ /** If this is non-null, the sensor implemenation will call this
+ * whenever the ATTN line is asserted.
+ */
+ void (*attention)(struct rmi_function_info *rmifninfo);
+
+
+ /* Standard kernel linked list implementation.
+ * Documentation on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head link;
+};
+
+
+typedef void(*inthandlerFuncPtr)(struct rmi_function_info *rfi, unsigned int assertedIRQs);
+typedef int(*configFuncPtr)(struct rmi_function_info *rmifninfo);
+typedef int(*initFuncPtr)(struct rmi_function_device *function_device);
+typedef int(*detectFuncPtr)(struct rmi_function_info *rmifninfo,
+ struct rmi_function_descriptor *fndescr,
+ unsigned int interruptCount);
+typedef void (*attnFuncPtr)(struct rmi_function_info *rmifninfo);
+
+struct rmi_functions_data {
+ int functionNumber;
+ inthandlerFuncPtr inthandlerFn;
+ configFuncPtr configFn;
+ initFuncPtr initFn;
+ detectFuncPtr detectFn;
+ attnFuncPtr attnFn;
+};
+
+
+struct rmi_functions *rmi_find_function(int functionNum);
+int rmi_functions_init(struct input_dev *inputdev);
+
+struct rmi_function_driver {
+ struct module *module;
+ struct device_driver drv;
+
+ /* Probe Function
+ * This function is called to give the function driver layer an
+ * opportunity to claim an RMI function.
+ */
+ int (*probe)(struct rmi_function_driver *function);
+ /* Config Function
+ * This function is called after a successful probe. It gives the
+ * function driver an opportunity to query and/or configure an RMI
+ * function before data starts flowing.
+ */
+ void (*config)(struct rmi_function_driver *function);
+
+ unsigned short functionQueryBaseAddr; /* RMI4 function control */
+ unsigned short functionControlBaseAddr;
+ unsigned short functionCommandBaseAddr;
+ unsigned short functionDataBaseAddr;
+ unsigned int interruptRegisterOffset; /* offset from start of interrupt registers */
+ unsigned int interruptMask;
+
+ /* pointer to the corresponding phys driver info for this sensor */
+ /* The phys driver has the pointers to read, write, etc. */
+ /* Probably don't need it here - used down in bus driver and sensor driver */
+ struct rmi_phys_driver *rpd;
+
+ /* Standard kernel linked list implementation.
+ * Documentation on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head function_drivers; /* link function drivers into list */
+};
+
+struct rmi_function_device {
+ struct rmi_function_driver *function;
+ struct device dev;
+ struct input_dev *input;
+ struct rmi_sensor_driver *sensor; /* need this to be bound to phys driver layer */
+
+ /* the function ptrs to the config, init, detect and
+ report fns for this rmi function device. */
+ struct rmi_functions *rmi_funcs;
+ struct rmi_function_info *rfi;
+
+ /** An RMI sensor might actually have several IRQ registers -
+ * this tells us which IRQ register this function is interested in.
+ */
+ unsigned int irqRegisterSet;
+
+ /** This is a mask of the IRQs the function is interested in.
+ */
+ unsigned int irqMask;
+
+ /* Standard kernel linked list implementation.
+ * Documentation on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head functions; /* link functions into list */
+};
+
+int rmi_function_register_device(struct rmi_function_device *dev, int fnNumber);
+
+#endif
diff --git a/drivers/input/touchscreen/rmi_sensor.c b/drivers/input/touchscreen/rmi_sensor.c
new file mode 100644
index 0000000..8b0dc35
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_sensor.c
@@ -0,0 +1,588 @@
+/**
+ * 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/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 "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);
+
+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 interreupts).
+ */
+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->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. */
+ printk(KERN_INFO "%s: Setting up polling.", __func__);
+ 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;
+ bool found;
+ 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);
+
+ /* Print a helpful message for debugging. */
+ if ((rmi_fd.functionNum & 0xff) == 0x01)
+ printk(KERN_DEBUG "%s: Fn $01 Found - RMI Device Control\n", __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\n",
+ __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 */
+ found = false;
+ printk(KERN_DEBUG "%s: Checking for RMI function F%02x.", __func__, rmi_fd.functionNum);
+ fn = rmi_find_function(rmi_fd.functionNum);
+ if (fn) {
+ found = true;
+ 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 memeory for rmi_function_device\n", __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;
+ }
+ }
+
+ if (!found) {
+ printk(KERN_ERR "%s: could not find support for function 0x%x\n",
+ __func__, rmi_fd.functionNum);
+ }
+ } else {
+ printk(KERN_INFO "%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_INFO "%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_INFO "%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_INFO "%s: RMI Sensor Init\n", __func__);
+ return 0;
+}
+
+static void __exit rmi_sensor_exit(void)
+{
+ printk(KERN_INFO "%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");
diff --git a/drivers/input/touchscreen/rmi_sensor.h b/drivers/input/touchscreen/rmi_sensor.h
new file mode 100644
index 0000000..967e78a
--- /dev/null
+++ b/drivers/input/touchscreen/rmi_sensor.h
@@ -0,0 +1,136 @@
+/**
+ *
+ * Synaptics Register Mapped Interface (RMI4) - RMI Sensor Module Header.
+ * 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.
+ *
+ *#############################################################################
+ */
+
+#include <linux/device.h>
+
+#ifndef _RMI_SENSOR_H
+#define _RMI_SENSOR_H
+
+#include "rmi_platformdata.h"
+
+struct rmi_sensor_driver {
+ struct module *module;
+ struct device_driver drv;
+ struct rmi_sensor_device *sensor_device;
+
+ /* Attention Function
+ * This function is called by the low level isr in the physical
+ * driver. It merely schedules work to be done.
+ */
+ void (*attention)(struct rmi_phys_driver *physdrvr, int instance);
+ /* Probe Function
+ * This function is called to give the sensor driver layer an
+ * opportunity to claim an RMI device. The sensor layer cannot
+ * read RMI registers at this point since the rmi physical driver
+ * has not been bound to it yet. Defer that to the config
+ * function call which occurs immediately after a successful probe.
+ */
+ int (*probe)(struct rmi_sensor_driver *sensor);
+ /* Config Function
+ * This function is called after a successful probe. It gives the
+ * sensor driver an opportunity to query and/or configure an RMI
+ * device before data starts flowing.
+ */
+ void (*config)(struct rmi_sensor_driver *sensor);
+
+ /* Functions can call this in order to dispatch IRQs. */
+ void (*dispatchIRQs)(struct rmi_sensor_driver *sensor,
+ unsigned int irqStatus);
+
+ /* Register Functions
+ * This function is called in the rmi bus
+ * driver to have the sensor driver scan for any supported
+ * functions on the sensor and add devices for each one.
+ */
+ void (*rmi_sensor_register_functions)(struct rmi_sensor_driver *sensor);
+
+ unsigned int interruptRegisterCount;
+
+ bool polling_required;
+
+ /* pointer to the corresponding phys driver info for this sensor */
+ /* The phys driver has the pointers to read, write, etc. */
+ struct rmi_phys_driver *rpd;
+
+ struct hrtimer timer;
+ struct work_struct work;
+ bool workIsReady;
+
+ /* This list is for keeping around the list of sensors.
+ * Every time that a physical device is detected by the
+ * physical layer - be it i2c, spi, or some other - then
+ * we need to bind the physical layer to the device. When
+ * the Page Descriptor Table is scanned and when Function $01
+ * is found then a new sensor device is created. The corresponding
+ * rmi_phys_driver struct pointer needs to be bound to the new
+ * sensor since Function $01 will be used to control and get
+ * interrupt information about the particular data source that is
+ * doing the interrupt. The rmi_phys_driver contains the pointers
+ * to the particular read, write, read_multiple, write_multiple
+ * functions for this device. This rmi_phys_driver struct will
+ * have to be up-bound to any drivers upstream that need it.
+ */
+
+ /* Standard kernel linked list implementation.
+ * Documentation on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head sensor_drivers; /* link sensor drivers into list */
+
+ struct list_head functions; /* List of rmi_function_infos */
+ struct rmi_functiondata_list *perfunctiondata; /* Per function initialization data. */
+};
+
+/* macro to get the pointer to the device_driver struct from the sensor */
+#define to_rmi_sensor_driver(drv) container_of(drv, struct rmi_sensor_driver, drv);
+
+struct rmi_sensor_device {
+ struct rmi_sensor_driver *driver;
+ struct device dev;
+
+ /* Standard kernel linked list implementation.
+ * Documentation on how to use it can be found at
+ * http://isis.poly.edu/kulesh/stuff/src/klist/.
+ */
+ struct list_head sensors; /* link sensors into list */
+};
+
+int rmi_sensor_register_device(struct rmi_sensor_device *dev, int index);
+int rmi_sensor_register_driver(struct rmi_sensor_driver *driver);
+int rmi_sensor_register_functions(struct rmi_sensor_driver *sensor);
+bool rmi_polling_required(struct rmi_sensor_driver *sensor);
+
+static inline void *rmi_sensor_get_functiondata(struct rmi_sensor_driver *driver, unsigned char function_index)
+{
+ int i;
+ for (i = 0; i < driver->perfunctiondata->count; i++) {
+ if (driver->perfunctiondata->functiondata[i].function_index == function_index)
+ return driver->perfunctiondata->functiondata[i].data;
+ }
+ return NULL;
+}
+
+#endif
+
^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 3/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 0:50 [PATCH 0/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver Christopher Heiny
2011-03-30 0:50 ` [PATCH 1/3] " Christopher Heiny
2011-03-30 0:50 ` [PATCH 2/3] " Christopher Heiny
@ 2011-03-30 0:50 ` Christopher Heiny
2 siblings, 0 replies; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 0:50 UTC (permalink / raw)
To: Dmitry Torokhov
Cc: Jean Delvare, Linux Kernel, Linux Input, Christopher Heiny,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
Driver for Synaptics touchscreens using RMI4 protocol.
Signed-off-by: William Manson <wmanson@synaptics.com>
Signed-off-by: Allie Xiong <axiong@synaptics.com>
Signed-off-by: Christopher Heiny <cheiny@synaptics.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Linus Walleij <linus.walleij@stericsson.com>
Cc: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Cc: Joeri de Gram <j.de.gram@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
---
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 718bcc8..3181008 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -41,6 +41,16 @@ obj-$(CONFIG_TOUCHSCREEN_QT602240) += qt602240_ts.o
obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
+CFLAGS_rmi_bus.o := -DDEBUG
+CFLAGS_rmi_sensor.o := -DDEBUG
+CFLAGS_rmi_function.o := -DDEBUG
+CFLAGS_rmi_f01.o := -DDEBUG
+CFLAGS_rmi_f11.o := -DDEBUG
+CFLAGS_rmi_f19.o := -DDEBUG
+CFLAGS_rmi_f34.o := -DDEBUG
+CFLAGS_rmi_i2c.o := -DDEBUG
+obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_RMI4_I2C) += rmi_bus.o rmi_sensor.o rmi_function.o rmi_f01.o rmi_f11.o rmi_f19.o rmi_f34.o rmi_i2c.o
+obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_RMI4_SPI) += rmi_bus.o rmi_sensor.o rmi_function.o rmi_f01.o rmi_f11.o rmi_f19.o rmi_f34.o rmi_spi.o
obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 61834ae..2b2f6dc 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -362,6 +362,36 @@ config TOUCHSCREEN_MIGOR
To compile this driver as a module, choose M here: the
module will be called migor_ts.
+config TOUCHSCREEN_SYNAPTICS_RMI4_I2C
+ tristate "Synaptics RMI4 I2C touchscreens"
+ depends on I2C
+ help
+ Say Y here if you have a Synaptics RMI4 I2C touchscreen connected to
+ your system. This enables support for Synaptics RMI4 over I2C based
+ touchscreens.
+
+ If unsure, say N.
+
+ To compile this driver as a set of modules, choose M here: the
+ modules will be called rmi_core, rmi_app_touchpad, rmi_phys_i2c.
+
+config TOUCHSCREEN_SYNAPTICS_RMI4_SPI
+ tristate "Synaptics RMI4 SPI touchscreens"
+ depends on SPI
+ help
+ Say Y here if you have a Synaptics RMI4 SPI touchscreen connected to
+ your system. This enables support for Synaptics RMI4 over SPI based
+ touchscreens.
+
+ If unsure, say N.
+
+ To compile this driver as a set of modules, choose M here: the
+ modules will be called rmi_core, rmi_app_touchpad, rmi_phys_spi.
+
+config SYNA_MULTI_TOUCH
+ bool "Synaptics pointing using multi-touch events"
+ depends on TOUCHSCREEN_SYNAPTICS_RMI4_I2C || TOUCHSCREEN_SYNAPTICS_RMI4_SPI
+
config TOUCHSCREEN_TNETV107X
tristate "TI TNETV107X touchscreen support"
depends on ARCH_DAVINCI_TNETV107X
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 0:50 ` [PATCH 1/3] " Christopher Heiny
@ 2011-03-30 8:02 ` Wolfram Sang
2011-03-30 18:36 ` Christopher Heiny
2011-03-30 11:46 ` Joerie de Gram
1 sibling, 1 reply; 10+ messages in thread
From: Wolfram Sang @ 2011-03-30 8:02 UTC (permalink / raw)
To: Christopher Heiny
Cc: Dmitry Torokhov, Jean Delvare, Linux Kernel, Linux Input,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
[-- Attachment #1: Type: text/plain, Size: 733 bytes --]
Hi,
> + retval = rmi_register_sensor(&instancedata->rmiphysdrvr, platformdata->perfunctiondata);
> + if (retval) {
> + dev_err(&client->dev, "%s: Failed to Register %s sensor drivers\n",
> + __func__, instancedata->rmiphysdrvr.name);
> + i2c_set_clientdata(client, NULL);
I originally just wanted to say that this line can be removed. Then I
remembered that I already sent a patch for a similar driver in staging
(dc7b202a4ee6cb686e2bbef80c84443f43ec91bd). The staging driver looks in
a better shape to me. Do you know about it?
Regards,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 198 bytes --]
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 0:50 ` [PATCH 1/3] " Christopher Heiny
2011-03-30 8:02 ` Wolfram Sang
@ 2011-03-30 11:46 ` Joerie de Gram
2011-03-30 14:00 ` Christopher Heiny
1 sibling, 1 reply; 10+ messages in thread
From: Joerie de Gram @ 2011-03-30 11:46 UTC (permalink / raw)
To: Christopher Heiny
Cc: Dmitry Torokhov, Jean Delvare, Linux Kernel, Linux Input,
Allie Xiong, William Manson, Linus Walleij,
Naveen Kumar Gaddipati
Hi,
> +#include "rmi.h"
This header is missing.
Joerie
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 11:46 ` Joerie de Gram
@ 2011-03-30 14:00 ` Christopher Heiny
0 siblings, 0 replies; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 14:00 UTC (permalink / raw)
To: Joerie de Gram
Cc: Dmitry Torokhov, Jean Delvare, Linux Kernel, Linux Input,
Allie Xiong, William Manson, Linus Walleij,
Naveen Kumar Gaddipati
Yoicks! Stand by for a correction.
________________________________________
From: Joerie de Gram [j.de.gram@gmail.com]
Sent: Wednesday, March 30, 2011 4:46 AM
To: Christopher Heiny
Cc: Dmitry Torokhov; Jean Delvare; Linux Kernel; Linux Input; Allie Xiong; William Manson; Linus Walleij; Naveen Kumar Gaddipati
Subject: Re: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
Hi,
> +#include "rmi.h"
This header is missing.
Joerie
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 8:02 ` Wolfram Sang
@ 2011-03-30 18:36 ` Christopher Heiny
2011-03-30 19:44 ` Wolfram Sang
0 siblings, 1 reply; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 18:36 UTC (permalink / raw)
To: Wolfram Sang
Cc: Dmitry Torokhov, Jean Delvare, Linux Kernel, Linux Input,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
On 03/30/2011 01:02 AM, Wolfram Sang wrote:
> * PGP Signed by an unknown key: 03/30/2011 at 12:02:23 AM
> Hi,
>
>> + retval = rmi_register_sensor(&instancedata->rmiphysdrvr, platformdata->perfunctiondata);
>> + if (retval) {
>> + dev_err(&client->dev, "%s: Failed to Register %s sensor drivers\n",
>> + __func__, instancedata->rmiphysdrvr.name);
>> + i2c_set_clientdata(client, NULL);
>
> I originally just wanted to say that this line can be removed. Then I
> remembered that I already sent a patch for a similar driver in staging
> (dc7b202a4ee6cb686e2bbef80c84443f43ec91bd). The staging driver looks in
> a better shape to me. Do you know about it?
Hi Wolfram,
That call is required in order to register the sensor device on the rmi
bus, so that the rmi functions can be associated with it. Without that
call, the driver will not function.
I'm afraid I can't locate the commit you specified. I do find a driver
in staging/ste_rmi4/synaptics_i2c_rmi4.[ch] - is that the one? If not
which, tree/branch can I find it in?
Thanks,
Chris
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 18:36 ` Christopher Heiny
@ 2011-03-30 19:44 ` Wolfram Sang
2011-03-30 21:08 ` Christopher Heiny
0 siblings, 1 reply; 10+ messages in thread
From: Wolfram Sang @ 2011-03-30 19:44 UTC (permalink / raw)
To: Christopher Heiny
Cc: Dmitry Torokhov, Jean Delvare, Linux Kernel, Linux Input,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
[-- Attachment #1: Type: text/plain, Size: 1604 bytes --]
On Wed, Mar 30, 2011 at 11:36:04AM -0700, Christopher Heiny wrote:
> On 03/30/2011 01:02 AM, Wolfram Sang wrote:
> >* PGP Signed by an unknown key: 03/30/2011 at 12:02:23 AM
> >Hi,
> >
> >>+ retval = rmi_register_sensor(&instancedata->rmiphysdrvr, platformdata->perfunctiondata);
> >>+ if (retval) {
> >>+ dev_err(&client->dev, "%s: Failed to Register %s sensor drivers\n",
> >>+ __func__, instancedata->rmiphysdrvr.name);
> >>+ i2c_set_clientdata(client, NULL);
> >
> >I originally just wanted to say that this line can be removed. Then I
> >remembered that I already sent a patch for a similar driver in staging
> >(dc7b202a4ee6cb686e2bbef80c84443f43ec91bd). The staging driver looks in
> >a better shape to me. Do you know about it?
>
> That call is required in order to register the sensor device on the
I meant the last line, setting clientdata to NULL is not needed anymore.
> I'm afraid I can't locate the commit you specified.
Direct search failed for me, too, but here is the link:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dc7b202a4ee6cb686e2bbef80c84443f43ec91bd
> I do find a driver in staging/ste_rmi4/synaptics_i2c_rmi4.[ch] - is that the
> one?
Yes, I meant this one. Looks a bit better from a glimpse; no '#if 0'-blocks,
much less printk. I just wondered how these two are related and if it makes
sense to join efforts here.
Regards,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 1/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver
2011-03-30 19:44 ` Wolfram Sang
@ 2011-03-30 21:08 ` Christopher Heiny
0 siblings, 0 replies; 10+ messages in thread
From: Christopher Heiny @ 2011-03-30 21:08 UTC (permalink / raw)
To: Wolfram Sang
Cc: Dmitry Torokhov, Jean Delvare, Linux Kernel, Linux Input,
Allie Xiong, William Manson, Joerie de Gram, Linus Walleij,
Naveen Kumar Gaddipati
On 03/30/2011 12:44 PM, Wolfram Sang wrote:
> * PGP Signed by an unknown key: 03/30/2011 at 11:44:12 AM
> On Wed, Mar 30, 2011 at 11:36:04AM -0700, Christopher Heiny wrote:
>> On 03/30/2011 01:02 AM, Wolfram Sang wrote:
>>>> Old Signed by an unknown key: 03/30/2011 at 12:02:23 AM
>>> Hi,
>>>
>>>> + retval = rmi_register_sensor(&instancedata->rmiphysdrvr, platformdata->perfunctiondata);
>>>> + if (retval) {
>>>> + dev_err(&client->dev, "%s: Failed to Register %s sensor drivers\n",
>>>> + __func__, instancedata->rmiphysdrvr.name);
>>>> + i2c_set_clientdata(client, NULL);
>>>
>>> I originally just wanted to say that this line can be removed. Then I
>>> remembered that I already sent a patch for a similar driver in staging
>>> (dc7b202a4ee6cb686e2bbef80c84443f43ec91bd). The staging driver looks in
>>> a better shape to me. Do you know about it?
>>
>> That call is required in order to register the sensor device on the
>
> I meant the last line, setting clientdata to NULL is not needed anymore.
D'oh! OK, we'll remove that.
>> I'm afraid I can't locate the commit you specified.
>
> Direct search failed for me, too, but here is the link:
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dc7b202a4ee6cb686e2bbef80c84443f43ec91bd
Thanks - yes, I looked at that one when it was first submitted.
>> I do find a driver in staging/ste_rmi4/synaptics_i2c_rmi4.[ch] - is that the
>> one?
>
> Yes, I meant this one. Looks a bit better from a glimpse; no '#if 0'-blocks,
> much less printk. I just wondered how these two are related and if it makes
> sense to join efforts here.
Yah, the ste_rmi4 patch is a lot tidier in those terms. One of the
issues we're facing is that not only are we developing our code for
kernel.org submission, we also have to support various in-development
customer projects at the same time out of the same codebase. The #ifs
and printks tend to slip in under the radar in that process - we'll work
on vetting this better during the patch preparation process.
The ste_rmi4 patch and our work share a common ancestor in some older
reference code that we distributed in 2009. There's nothing
particularly wrong with the ste_rmi4 patch in and of itself, but for our
purposes going forward we require a more generic and modular structure.
In particular, we needed to separate the communications code from the
functional implementation code, allow multiple RMI4 sensors on a single
system (possibly using different communications mechanisms) and to
enable future modular loading of individual function implementations.
Along with some other features, Dmitry required implementing an rmi bus,
and we've been proceeding with that design.
It does make sense to join efforts going forward. Any contributions you
would like to make would be happily accepted. Our current architecture
is pretty much committed as the direction going forward (both for
Synaptics and for kernel.org), so I think the most sensible thing is to
use the recent Synaptics patch as the basis for that.
Chris
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2011-03-30 21:32 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-03-30 0:50 [PATCH 0/3] input/touchscreen: Synaptics RMI4 Touchscreen Driver Christopher Heiny
2011-03-30 0:50 ` [PATCH 1/3] " Christopher Heiny
2011-03-30 8:02 ` Wolfram Sang
2011-03-30 18:36 ` Christopher Heiny
2011-03-30 19:44 ` Wolfram Sang
2011-03-30 21:08 ` Christopher Heiny
2011-03-30 11:46 ` Joerie de Gram
2011-03-30 14:00 ` Christopher Heiny
2011-03-30 0:50 ` [PATCH 2/3] " Christopher Heiny
2011-03-30 0:50 ` [PATCH 3/3] " Christopher Heiny
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