Lines Matching +full:combined +full:- +full:sensors
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * i2c.h - definitions for the Linux i2c bus interface
4 * Copyright (C) 1995-2000 Simon G. Vogl
5 * Copyright (C) 2013-2019 Wolfram Sang <wsa@kernel.org>
29 /* --- General options ------------------------------------------------ */
69 * i2c_master_recv - issue a single I2C message in master receive mode
83 * i2c_master_recv_dmasafe - issue a single I2C message in master receive mode
99 * i2c_master_send - issue a single I2C message in master transmit mode
113 * i2c_master_send_dmasafe - issue a single I2C message in master transmit mode
194 * struct i2c_device_identity - i2c client device identification
195 * @manufacturer_id: 0 - 4095, database maintained by NXP
196 * @part_id: 0 - 511, according to manufacturer
197 * @die_revision: 0 - 7, according to manufacturer
226 * struct i2c_driver - represent an I2C device driver
228 * @probe: Callback for device binding - soon to be deprecated
233 * @command: Callback for bus-wide signaling (optional)
238 * @clients: List of detected clients we created (for i2c-core use only)
280 * 16-bit payload data reported by the slave device acting as master.
301 * struct i2c_client - represent an I2C slave device
305 * generic enough to hide second-sourcing and compatible revisions.
310 * @detected: member of an i2c_driver.clients list or i2c-core's
332 unsigned short addr; /* chip address - NOTE: 7bit */
360 return dev_get_drvdata(&client->dev); in i2c_get_clientdata()
365 dev_set_drvdata(&client->dev, data); in i2c_set_clientdata()
386 return client->slave_cb(client, event, val); in i2c_slave_event()
393 * struct i2c_board_info - template for device creation
397 * @dev_name: Overrides the default <busnr>-<addr> dev_name if set
414 * bus numbers identify adapters that aren't yet available. For add-on boards,
432 * I2C_BOARD_INFO - macro used to list an i2c device and its address
438 * fields (such as associated irq, or device-specific platform_data)
447 * Add-on boards should register/unregister their devices; e.g. a board
448 * with integrated I2C, a config eeprom, sensors, and a codec that's
492 * Modules for add-on boards must use other calls.
508 * struct i2c_algorithm - represent I2C transfer method
526 * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584
531 * Kernel Documentation file Documentation/i2c/fault-codes.rst.
535 * If an adapter algorithm can't do I2C-level access, set master_xfer
564 * struct i2c_lock_operations - represent I2C locking operations
578 * struct i2c_timings - I2C timing information
602 * struct i2c_bus_recovery_info - I2C bus recovery information
658 * struct i2c_adapter_quirks - describe flaws of an i2c adapter
663 * @max_comb_1st_msg_len: maximum length of the first msg in a combined message
664 * @max_comb_2nd_msg_len: maximum length of the second msg in a combined message
666 * Note about combined messages: Some I2C controllers can only send one message
667 * per transfer, plus something called combined message or write-then-read.
671 * with max_comb_*_len because combined message mode usually has its own
673 * write-then-anything or other variants. To support that, write-then-read has
674 * been broken out into smaller bits like write-first and read-second which can
675 * be combined as needed.
689 /* first combined message must be write */
691 /* second combined message must be read */
693 /* both combined messages must have the same target address */
695 /* convenience macro for typical write-then read case */
746 return dev_get_drvdata(&adap->dev); in i2c_get_adapdata()
751 dev_set_drvdata(&adap->dev, data); in i2c_set_adapdata()
758 struct device *parent = adapter->dev.parent; in i2c_parent_is_i2c_adapter()
760 if (parent != NULL && parent->type == &i2c_adapter_type) in i2c_parent_is_i2c_adapter()
774 * i2c_lock_bus - Get exclusive access to an I2C bus segment
782 adapter->lock_ops->lock_bus(adapter, flags); in i2c_lock_bus()
786 * i2c_trylock_bus - Try to get exclusive access to an I2C bus segment
796 return adapter->lock_ops->trylock_bus(adapter, flags); in i2c_trylock_bus()
800 * i2c_unlock_bus - Release exclusive access to an I2C bus segment
808 adapter->lock_ops->unlock_bus(adapter, flags); in i2c_unlock_bus()
812 * i2c_mark_adapter_suspended - Report suspended state of the adapter to the core
824 set_bit(I2C_ALF_IS_SUSPENDED, &adap->locked_flags); in i2c_mark_adapter_suspended()
829 * i2c_mark_adapter_resumed - Report resumed state of the adapter to the core
839 clear_bit(I2C_ALF_IS_SUSPENDED, &adap->locked_flags); in i2c_mark_adapter_resumed()
853 /* Construct an I2C_CLIENT_END-terminated array of i2c addresses */
858 /* ----- functions exported by i2c.o */
877 return !IS_ERR_OR_NULL(client) && client->dev.driver; in i2c_client_has_driver()
880 /* call the i2c_client->command() of all attached clients with
894 return adap->algo->functionality(adap); in i2c_get_functionality()
904 * i2c_check_quirks() - Function for checking the quirk flags in an i2c adapter
912 if (!adap->quirks) in i2c_check_quirks()
914 return (adap->quirks->flags & quirks) == quirks; in i2c_check_quirks()
920 return adap->nr; in i2c_adapter_id()
925 return (msg->addr << 1) | (msg->flags & I2C_M_RD ? 1 : 0); in i2c_8bit_addr_from_msg()
933 * module_i2c_driver() - Helper macro for registering a modular I2C driver
945 * builtin_i2c_driver() - Helper macro for registering a builtin I2C driver
1002 return -ENOTSUPP; in of_i2c_get_board_info()
1035 return ERR_PTR(-ENODEV); in i2c_acpi_new_device()