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//[*]--------------------------------------------------------------------------------------------------[*]
//
//
//
// I2C Touchscreen driver
// 2012.01.17
//
//
//[*]--------------------------------------------------------------------------------------------------[*]
#include <linux/device.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/hrtimer.h>
#include <asm/unaligned.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/string.h>
//[*]--------------------------------------------------------------------------------------------------[*]
#include <linux/input/touch-pdata.h>
#include "touch.h"
//[*]--------------------------------------------------------------------------------------------------[*]
//
// sysfs function prototype define
//
//[*]--------------------------------------------------------------------------------------------------[*]
// disablel (1 -> disable irq, cancel work, 0 -> enable irq), show irq state
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_disable (struct device *dev, struct device_attribute *attr, char *buf);
static ssize_t store_disable (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static DEVICE_ATTR(disable, S_IRWXUGO, show_disable, store_disable);
//[*]--------------------------------------------------------------------------------------------------[*]
// fw version display
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_fw_version (struct device *dev, struct device_attribute *attr, char *buf);
static DEVICE_ATTR(fw_version, S_IRWXUGO, show_fw_version, NULL);
//[*]--------------------------------------------------------------------------------------------------[*]
// fw data load : fw load status, fw data load
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_fw (struct device *dev, struct device_attribute *attr, char *buf);
static ssize_t store_fw (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static DEVICE_ATTR(fw, S_IRWXUGO, show_fw, store_fw);
//[*]--------------------------------------------------------------------------------------------------[*]
// fw status : fw status
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_fw_status (struct device *dev, struct device_attribute *attr, char *buf);
static ssize_t store_fw_status (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static DEVICE_ATTR(fw_status, S_IRWXUGO, show_fw_status, store_fw_status);
//[*]--------------------------------------------------------------------------------------------------[*]
// update_fw : 1 -> update fw (load fw)
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_update_fw (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static DEVICE_ATTR(update_fw, S_IRWXUGO, NULL, store_update_fw);
//[*]--------------------------------------------------------------------------------------------------[*]
// calibration (1 -> update calibration, 0 -> nothing), show -> NULL
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_calibration (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static DEVICE_ATTR(calibration, S_IRWXUGO, NULL, store_calibration);
//[*]--------------------------------------------------------------------------------------------------[*]
// hw reset
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_reset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count);
static DEVICE_ATTR(reset, S_IRWXUGO, NULL, store_reset);
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static struct attribute *touch_sysfs_entries[] = {
&dev_attr_disable.attr,
&dev_attr_fw_version.attr,
&dev_attr_fw.attr,
&dev_attr_fw_status.attr,
&dev_attr_update_fw.attr,
&dev_attr_calibration.attr,
&dev_attr_reset.attr,
NULL
};
static struct attribute_group touch_attr_group = {
.name = NULL,
.attrs = touch_sysfs_entries,
};
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_reset (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct touch *ts = dev_get_drvdata(dev);
unsigned long val;
int err;
if ((err = strict_strtoul(buf, 10, &val))) return err;
if((ts->pdata->reset_gpio) && (val == 1)) touch_hw_reset(ts);
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
// disablel (1 -> disable irq, cancel work, 0 -> enable irq), show irq state
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_disable (struct device *dev, struct device_attribute *attr, char *buf)
{
struct touch *ts = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", ts->disabled);
}
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_disable (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct touch *ts = dev_get_drvdata(dev);
unsigned long val;
int err;
if ((err = strict_strtoul(buf, 10, &val))) return err;
if (val) ts->pdata->disable(ts); // interrupt disable
else ts->pdata->enable(ts); // interrupt enable
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
// firmware version display
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_fw_version (struct device *dev, struct device_attribute *attr, char *buf)
{
struct touch *ts = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", ts->fw_version);
}
//[*]--------------------------------------------------------------------------------------------------[*]
// update_fw
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_fw (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct touch *ts = dev_get_drvdata(dev);
if(ts->fw_buf != NULL) {
if(ts->fw_size < ts->pdata->fw_filesize) memcpy(&ts->fw_buf[ts->fw_size], buf, count);
ts->fw_size += count;
}
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_fw (struct device *dev, struct device_attribute *attr, char *buf)
{
struct touch *ts = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", ts->fw_size);
}
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_fw_status (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct touch *ts = dev_get_drvdata(dev);
int err;
unsigned long val;
if ((err = strict_strtoul(buf, 10, &val))) return err;
if(ts->pdata->fw_control) ts->pdata->fw_control(ts, val);
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t show_fw_status (struct device *dev, struct device_attribute *attr, char *buf)
{
struct touch *ts = dev_get_drvdata(dev);
return sprintf(buf, "0x%08X\n", ts->fw_status);
}
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_update_fw (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
unsigned long val;
int err;
struct touch *ts = dev_get_drvdata(dev);
if ((err = strict_strtoul(buf, 10, &val))) return err;
if (val == 1) {
if(ts->pdata->flash_firmware) {
if(ts->pdata->fw_filename) ts->pdata->flash_firmware(dev, ts->pdata->fw_filename);
}
}
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
// calibration (1 -> update calibration, 0 -> nothing), show -> NULL
//[*]--------------------------------------------------------------------------------------------------[*]
static ssize_t store_calibration (struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct touch *ts = dev_get_drvdata(dev);
unsigned long val;
int err;
if ((err = strict_strtoul(buf, 10, &val))) return err;
if (val == 1) {
ts->pdata->disable(ts); // interrupt disable
if(ts->pdata->calibration) ts->pdata->calibration(ts);
ts->pdata->enable(ts); // interrupt enable
}
return count;
}
//[*]--------------------------------------------------------------------------------------------------[*]
//[*]--------------------------------------------------------------------------------------------------[*]
int touch_sysfs_create (struct device *dev)
{
return sysfs_create_group(&dev->kobj, &touch_attr_group);
}
//[*]--------------------------------------------------------------------------------------------------[*]
void touch_sysfs_remove (struct device *dev)
{
sysfs_remove_group(&dev->kobj, &touch_attr_group);
}
//[*]--------------------------------------------------------------------------------------------------[*]
MODULE_AUTHOR("HardKernel Co., Ltd.");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Touchscreen Driver");
//[*]--------------------------------------------------------------------------------------------------[*]
|
