drivers/i2c/i2c-mux.c

44 	struct i2c_adapter *parent = muxc->parent;
51 		ret = __i2c_transfer(parent, msgs, num);
63 	struct i2c_adapter *parent = muxc->parent;
70 		ret = i2c_transfer(parent, msgs, num);
84 	struct i2c_adapter *parent = muxc->parent;
91 		ret = __i2c_smbus_xfer(parent, addr, flags,
106 	struct i2c_adapter *parent = muxc->parent;
113 		ret = i2c_smbus_xfer(parent, addr, flags,
121 /* Return the parent's functionality */
125 	struct i2c_adapter *parent = priv->muxc->parent;
127 	return parent->algo->functionality(parent);
130 /* Return all parent classes, merged */
131 static unsigned int i2c_mux_parent_classes(struct i2c_adapter *parent)
136 		class |= parent->class;
137 		parent = i2c_parent_is_i2c_adapter(parent);
138 	} while (parent);
146 	struct i2c_adapter *parent = priv->muxc->parent;
148 	rt_mutex_lock_nested(&parent->mux_lock, i2c_adapter_depth(adapter));
151 	i2c_lock_bus(parent, flags);
157 	struct i2c_adapter *parent = priv->muxc->parent;
159 	if (!rt_mutex_trylock(&parent->mux_lock))
163 	if (i2c_trylock_bus(parent, flags))
164 		return 1;	/* parent locked too, success */
165 	rt_mutex_unlock(&parent->mux_lock);
166 	return 0;		/* parent not locked, failure */
172 	struct i2c_adapter *parent = priv->muxc->parent;
175 		i2c_unlock_bus(parent, flags);
176 	rt_mutex_unlock(&parent->mux_lock);
183 	struct i2c_adapter *parent = priv->muxc->parent;
185 	rt_mutex_lock_nested(&parent->mux_lock, i2c_adapter_depth(adapter));
186 	i2c_lock_bus(parent, flags);
193 	struct i2c_adapter *parent = priv->muxc->parent;
195 	if (!rt_mutex_trylock(&parent->mux_lock))
197 	if (i2c_trylock_bus(parent, flags))
198 		return 1;	/* parent locked too, success */
199 	rt_mutex_unlock(&parent->mux_lock);
200 	return 0;		/* parent not locked, failure */
207 	struct i2c_adapter *parent = priv->muxc->parent;
209 	i2c_unlock_bus(parent, flags);
210 	rt_mutex_unlock(&parent->mux_lock);
223 	for (i2c = dev; i2c; i2c = i2c->parent) {
239 struct i2c_mux_core *i2c_mux_alloc(struct i2c_adapter *parent,
255 	muxc->parent = parent;
287 	struct i2c_adapter *parent = muxc->parent;
308 	if (parent->algo->master_xfer) {
314 	if (parent->algo->master_xfer_atomic)
317 	if (parent->algo->smbus_xfer) {
323 	if (parent->algo->smbus_xfer_atomic)
330 		 "i2c-%d-mux (chan_id %d)", i2c_adapter_id(parent), chan_id);
334 	priv->adap.dev.parent = &parent->dev;
335 	priv->adap.retries = parent->retries;
336 	priv->adap.timeout = parent->timeout;
337 	priv->adap.quirks = parent->quirks;
344 	if (i2c_mux_parent_classes(parent) & class & ~I2C_CLASS_DEPRECATED)
345 		dev_err(&parent->dev,
406 			dev_err(&parent->dev,
414 			dev_err(&parent->dev,
429 	dev_info(&parent->dev, "Added multiplexed i2c bus %d\n",