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hid: rkvr: add remove sync process, add sync ioctl to sync with nanoc before trasmitting

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Change-Id: I46c8577b2a9c8dd9b66597fba3775966f030ecfd
Signed-off-by: lanshh <lsh@rock-chips.com>
This commit is contained in:
lanshh 2016-09-09 10:35:00 +08:00 committed by Huang, Tao
parent be87e0b1f2
commit 89f21aa60d
2 changed files with 20 additions and 37 deletions
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54
drivers/hid/hid-rkvr.c
View File

@ -1062,6 +1062,25 @@ static long rkvr_hidraw_ioctl(struct file *file, unsigned int cmd, unsigned long
break;
}
if (_IOC_NR(cmd) == _IOC_NR(HIDRKVRHANDSHAKE(0))) {
int len = _IOC_SIZE(cmd);
char *buf;
buf = kzalloc(len + 1, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
break;
}
if (copy_from_user(buf, user_arg, len)) {
ret = -EFAULT;
kfree(buf);
break;
}
ret = hid_report_sync(&hid->dev, buf, len);
kfree(buf);
break;
}
/* Begin Read-only ioctls. */
if (_IOC_DIR(cmd) != _IOC_READ) {
ret = -EINVAL;
@ -1120,41 +1139,6 @@ int rkvr_sensor_register_callback(int (*callback)(char *, size_t, void *), void
}
EXPORT_SYMBOL_GPL(rkvr_sensor_register_callback);
static int rkvr_sync_exec(const char *p, size_t c)
{
int minor;
int ret = c;
int exist = 0;
mutex_lock(&minors_lock);
pr_info("rkvr_sync_exec %s\n", p);
for (minor = 0; minor < RKVR_HIDRAW_MAX_DEVICES; minor++) {
if (!rkvr_hidraw_table[minor] || !rkvr_hidraw_table[minor]->exist)
continue;
if (hid_report_sync(&rkvr_hidraw_table[minor]->hid->dev, p, c)) {
hid_err(rkvr_hidraw_table[minor]->hid, "hid_report_sync failed\n");
ret = -EIO;
goto exit;
}
exist++;
}
if (!exist)
ret = -ENODEV;
exit:
mutex_unlock(&minors_lock);
return ret;
}
int rkvr_sensor_sync_inv(const char *p, size_t c)
{
snprintf(sync_string, sizeof(sync_string), "%s", p);
return rkvr_sync_exec(sync_string, strlen(sync_string));
}
EXPORT_SYMBOL_GPL(rkvr_sensor_sync_inv);
static int rkvr_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int retval;

3
drivers/hid/hid-rkvr.h
View File

@ -9,7 +9,7 @@
#ifndef __HID_RKVR_H
#define __HID_RKVR_H
#define HIDRKVRHANDSHAKE(len) _IOC(_IOC_WRITE, 'H', 0x07, len)
#define HIDRKVRHANDSHAKE(len) _IOC(_IOC_WRITE, 'H', 0x1A, len)
#define HID_REPORT_ID_R 4
#define HID_REPORT_ID_W 5
#define HID_REPORT_ID_CRYP 6
@ -31,7 +31,6 @@ enum tracker_message_type {
#define DYNAMIC_LOAD_MPU6500 0
int rkvr_sensor_register_callback(int (*callback)(char *, size_t, void *), void *priv);
int rkvr_sensor_sync_inv(const char *p, size_t c);
struct rkvr_iio_hw_device {
struct device *dev;