//******************************************************************************
/// \brief Reopen sysfs MSG notify attribute
static void sysfs_reopen_notify_fd(struct mxt_device *mxt)
{
uint16_t val;
close(mxt->sysfs.debug_notify_fd);
sysfs_open_notify_fd(mxt);
read(mxt->sysfs.debug_notify_fd, &val, 2);
}
//******************************************************************************
/// \brief Set debug state
/// \param mxt Device context
/// \param debug_state true = debug enabled, false = debug disabled
/// \return #mxt_rc
int sysfs_set_debug(struct mxt_device *mxt, bool debug_state)
{
int ret;
// Check device is initialised
if (!mxt) {
mxt_err(mxt->ctx, "Device uninitialised");
return MXT_ERROR_NO_DEVICE;
}
if (mxt->sysfs.debug_v2 == true) {
ret = write_boolean_file(mxt, make_path(mxt, "debug_v2_enable"), debug_state);
if (ret)
ret = write_boolean_file(mxt, make_path(mxt, "debug_enable"), debug_state);
if (debug_state) {
ret = sysfs_open_notify_fd(mxt);
if (ret)
return ret;
} else {
close(mxt->sysfs.debug_notify_fd);
}
} else {
ret = MXT_SUCCESS;
if (debug_state) {
// Allocate buffer space
mxt->sysfs.debug_msg_buf_size = dmesg_buf_size();
mxt->sysfs.debug_msg_buf =
(char *)calloc(mxt->sysfs.debug_msg_buf_size, sizeof(char));
if (mxt->sysfs.debug_msg_buf == NULL) {
mxt_err(mxt->ctx, "Error allocating memory for debug_msg_buf_size");
ret = mxt_errno_to_rc(errno);
}
} else if (mxt->sysfs.debug_msg_buf) {
// Free up the message buffer
free(mxt->sysfs.debug_msg_buf);
mxt->sysfs.debug_msg_buf = NULL;
}
if (ret == MXT_SUCCESS)
ret = write_boolean_file(mxt, make_path(mxt, "debug_enable"), debug_state);
}
return ret;
}
//******************************************************************************
/// \brief Set debug state
/// \param mxt Device context
/// \param debug_state true = debug enabled, false = debug disabled
/// \return #mxt_rc
int sysfs_set_debug(struct mxt_device *mxt, bool debug_state)
{
int ret;
// Check device is initialised
if (!mxt) {
mxt_err(mxt->ctx, "Device uninitialised");
return MXT_ERROR_NO_DEVICE;
}
if (mxt->sysfs.debug_v2 == true) {
ret = write_boolean_file(mxt, make_path(mxt, "debug_v2_enable"), debug_state);
if (ret)
ret = write_boolean_file(mxt, make_path(mxt, "debug_enable"), debug_state);
if (debug_state) {
ret = sysfs_open_notify_fd(mxt);
if (ret)
return ret;
} else {
close(mxt->sysfs.debug_notify_fd);
}
} else {
if (debug_state) {
ret = dmesg_alloc_buffer(mxt);
if (ret)
return ret;
} else {
dmesg_free_buffer(mxt);
}
ret = write_boolean_file(mxt, make_path(mxt, "debug_enable"), debug_state);
}
return ret;
}