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/*
* Copyright (C) 2010,Imagis Technology Co. Ltd. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/stat.h>
#include <linux/input/ist30xxb.h>
#include "ist30xxb_update.h"
#include "ist30xxb_misc.h"
#include "ist30xxb_tracking.h"
#define S_IRWXUGO 0644
IST30XX_RING_BUF TrackBuf;
IST30XX_RING_BUF *pTrackBuf;
void ist30xx_tracking_init(void)
{
pTrackBuf = &TrackBuf;
pTrackBuf->RingBufCtr = 0;
pTrackBuf->RingBufInIdx = 0;
pTrackBuf->RingBufOutIdx = 0;
}
void ist30xx_tracking_deinit(void)
{
}
int ist30xx_get_track(u32 *ms, u32 *status)
{
unsigned long flags;
//spinlock_t mr_lock = SPIN_LOCK_UNLOCKED;
spinlock_t mr_lock = __SPIN_LOCK_UNLOCKED();
if (!pTrackBuf->RingBufCtr)
return IST30XX_RINGBUF_EMPTY;
spin_lock_irqsave(&mr_lock, flags);
if (pTrackBuf->RingBufOutIdx == IST30XX_RINGBUF_SIZE)
pTrackBuf->RingBufOutIdx = 0;
*ms = pTrackBuf->TimeBuf[pTrackBuf->RingBufOutIdx];
*status = pTrackBuf->StatusBuf[pTrackBuf->RingBufOutIdx];
pTrackBuf->RingBufOutIdx++;
pTrackBuf->RingBufCtr--;
spin_unlock_irqrestore(&mr_lock, flags);
return IST30XX_RINGBUF_NO_ERR;
}
int ist30xx_get_track_cnt(void)
{
return pTrackBuf->RingBufCtr;
}
#if IST30XX_TRACKING_MODE
int ist30xx_put_track(u32 ms, u32 status)
{
unsigned long flags;
//spinlock_t mr_lock = SPIN_LOCK_UNLOCKED;
spinlock_t mr_lock = __SPIN_LOCK_UNLOCKED();
#if PRINT_TSP_LOG
printk("[TSP] %s : %d\n", __func__, __LINE__);
#endif
//spin_lock_irqsave(&mr_lock, flags);
return 0;
pTrackBuf->RingBufCtr++;
if (pTrackBuf->RingBufCtr > IST30XX_RINGBUF_SIZE) {
pTrackBuf->RingBufCtr = IST30XX_RINGBUF_SIZE;
pTrackBuf->RingBufOutIdx++;
}
if (pTrackBuf->RingBufInIdx == IST30XX_RINGBUF_SIZE)
pTrackBuf->RingBufInIdx = 0;
if (pTrackBuf->RingBufOutIdx == IST30XX_RINGBUF_SIZE)
pTrackBuf->RingBufOutIdx = 0;
pTrackBuf->TimeBuf[pTrackBuf->RingBufInIdx] = ms;
pTrackBuf->StatusBuf[pTrackBuf->RingBufInIdx] = status;
pTrackBuf->RingBufInIdx++;
//spin_unlock_irqrestore(&mr_lock, flags);
return IST30XX_RINGBUF_NO_ERR;
}
static struct timespec t_track;
int ist30xx_tracking(u32 status)
{
u32 ms;
ktime_get_ts(&t_track);
ms = t_track.tv_sec * 1000 + t_track.tv_nsec / 1000000;
return ist30xx_put_track(ms, status);
}
#else
int ist30xx_put_track(u32 ms, u32 status)
{
return 0;
}
int ist30xx_tracking(u32 status)
{
return 0;
}
#endif // IST30XX_TRACKING_MODE
#define MAX_TRACKING_COUNT (300)
struct timespec t_curr; // ns
/* sysfs: /sys/class/touch/tracking/track_frame */
ssize_t ist30xx_track_frame_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int i, buf_cnt = 0;
int track_cnt = MAX_TRACKING_COUNT;
u32 *buf32 = (u32 *)buf;
u32 ms = 0, status = 0;
finger_info *finger = (finger_info *)&status;
mutex_lock(&ist30xx_mutex);
buf[0] = '\0';
if (track_cnt > ist30xx_get_track_cnt())
track_cnt = ist30xx_get_track_cnt();
tsp_verb("num: %d of %d\n", track_cnt, ist30xx_get_track_cnt());
for (i = 0; i < track_cnt; i++) {
ist30xx_get_track(&ms, &status);
finger = (finger_info *)&status;
tsp_verb("%08X: %08x\n", ms, status);
*buf32++ = ms;
*buf32++ = status;
buf_cnt += (sizeof(u32) * 2);
}
mutex_unlock(&ist30xx_mutex);
return buf_cnt;
}
/* sysfs: /sys/class/touch/tracking/track_cnt */
ssize_t ist30xx_track_cnt_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
u32 *buf32 = (u32 *)buf;
*buf32 = (u32)ist30xx_get_track_cnt();
tsp_verb("cnt: %d\n", *buf32);
return sizeof(u32);
}
/* sysfs */
static DEVICE_ATTR(track_frame, S_IRWXUGO, ist30xx_track_frame_show, NULL);
static DEVICE_ATTR(track_cnt, S_IRWXUGO, ist30xx_track_cnt_show, NULL);
static struct attribute *tracking_attributes[] = {
&dev_attr_track_frame.attr,
&dev_attr_track_cnt.attr,
NULL,
};
static struct attribute_group tracking_attr_group = {
.attrs = tracking_attributes,
};
extern struct class *ist30xx_class;
struct device *ist30xx_tracking_dev;
int ist30xx_init_tracking_sysfs(void)
{
/* /sys/class/touch/tracking */
ist30xx_tracking_dev = device_create(ist30xx_class, NULL, 0, NULL, "tracking");
/* /sys/class/touch/tracking/... */
if (sysfs_create_group(&ist30xx_tracking_dev->kobj, &tracking_attr_group))
tsp_err("[ TSP ] Failed to create sysfs group(%s)!\n", "tracking");
ist30xx_tracking_init();
return 0;
}
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