C++ (Cpp) xiic_busy Examples

Example #1

File: i2c-xiic.c Project: 0xroot/Blackphone-BP1-Kernel

static int xiic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
{
	struct xiic_i2c *i2c = i2c_get_adapdata(adap);
	int err;

	dev_dbg(adap->dev.parent, "%s entry SR: 0x%x\n", __func__,
		xiic_getreg8(i2c, XIIC_SR_REG_OFFSET));

	err = xiic_busy(i2c);
	if (err)
		return err;

	i2c->tx_msg = msgs;
	i2c->nmsgs = num;

	xiic_start_xfer(i2c);

	if (wait_event_timeout(i2c->wait, (i2c->state == STATE_ERROR) ||
		(i2c->state == STATE_DONE), HZ))
		return (i2c->state == STATE_DONE) ? num : -EIO;
	else {
		i2c->tx_msg = NULL;
		i2c->rx_msg = NULL;
		i2c->nmsgs = 0;
		return -ETIMEDOUT;
	}
}

Example #2

File: i2c-xiic.c Project: AshishNamdev/linux

static int xiic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
{
	struct xiic_i2c *i2c = i2c_get_adapdata(adap);
	int err;

	dev_dbg(adap->dev.parent, "%s entry SR: 0x%x\n", __func__,
		xiic_getreg8(i2c, XIIC_SR_REG_OFFSET));

	err = pm_runtime_get_sync(i2c->dev);
	if (err < 0)
		return err;

	err = xiic_busy(i2c);
	if (err)
		goto out;

	i2c->tx_msg = msgs;
	i2c->nmsgs = num;

	xiic_start_xfer(i2c);

	if (wait_event_timeout(i2c->wait, (i2c->state == STATE_ERROR) ||
		(i2c->state == STATE_DONE), HZ)) {
		err = (i2c->state == STATE_DONE) ? num : -EIO;
		goto out;
	} else {
		i2c->tx_msg = NULL;
		i2c->rx_msg = NULL;
		i2c->nmsgs = 0;
		err = -ETIMEDOUT;
		goto out;
	}
out:
	pm_runtime_mark_last_busy(i2c->dev);
	pm_runtime_put_autosuspend(i2c->dev);
	return err;
}