include/linux/i2c-atr.h

1 /* SPDX-License-Identifier: GPL-2.0 */
3  * I2C Address Translator
8  * Based on i2c-mux.h
14 #include <linux/i2c.h>
22  * struct i2c_atr_ops - Callbacks from ATR to the device driver.
24  *                 bus, with the alias assigned to it. The driver must
25  *                 configure the hardware to use the alias.
28  *                 alias.
34 			     const struct i2c_client *client, u16 alias);
40  * i2c_atr_new() - Allocate and initialize an I2C ATR helper.
43  * @ops:          Driver-specific callbacks
57  * i2c_atr_delete - Delete an I2C ATR helper.
58  * @atr: I2C ATR helper to be deleted.
66  * i2c_atr_add_adapter - Create a child ("downstream") I2C bus.
67  * @atr:        The I2C ATR
68  * @chan_id:    Index of the new adapter (0 .. max_adapters-1).  This value is
70  * @adapter_parent: The device used as the parent of the new i2c adapter, or NULL
71  *                  to use the i2c-atr device as the parent.
72  * @bus_handle: The fwnode handle that points to the adapter's i2c
75  * After calling this function a new i2c bus will appear. Adding and removing
77  * &i2c_atr_ops->attach_client and &i2c_atr_ops->detach_client callbacks for the
78  * driver to assign an alias to the device.
82  * under the i2c-atr device's 'i2c-atr' node.
93  * i2c_atr_del_adapter - Remove a child ("downstream") I2C bus added by
94  *                       i2c_atr_add_adapter(). If no I2C bus has been added
95  *                       this function is a no-op.
96  * @atr:     The I2C ATR
97  * @chan_id: Index of the adapter to be removed (0 .. max_adapters-1)
102  * i2c_atr_set_driver_data - Set private driver data to the i2c-atr instance.
103  * @atr:  The I2C ATR
109  * i2c_atr_get_driver_data - Get the stored drive data.
110  * @atr:     The I2C ATR