kernel/linux.git/drivers/i2c/i2c-core-slave.c, branch v6.19.5

i2c: core: Use fwnode_for_each_child_node_scoped()

2025-09-10T12:49:45+00:00

Replace the manual __free(fwnode_handle) iterator declaration with the new scoped iterator macro for cleaner, less error-prone code. This eliminates the need for explicit iterator variable declaration with the cleanup attribute, making the code more consistent with other scoped iterator usage patterns in the kernel. Signed-off-by: Jean-François Lessard Reviewed-by: Andy Shevchenko Reviewed-by: Sakari Ailus Signed-off-by: Wolfram Sang

i2c: core: Unify the firmware node type check

2025-04-16T16:05:47+00:00

OF and ACPI currently are using asymmetrical APIs to check for the firmware node type. Unify them by using is_*_node() against struct fwnode_handle pointer. Tested-by: Tomi Valkeinen Reviewed-by: Sakari Ailus Acked-by: Sakari Ailus Signed-off-by: Andy Shevchenko Signed-off-by: Wolfram Sang

i2c: simplify with scoped for each OF child loop

2024-09-03T10:01:52+00:00

Use scoped for_each_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Wolfram Sang

i2c: add tracepoints for I2C slave events

2022-03-19T23:11:05+00:00

I2C slave events tracepoints can be enabled by: echo 1 > /sys/kernel/tracing/events/i2c_slave/enable and logs in /sys/kernel/tracing/trace will look like: ... i2c_slave: i2c-0 a=010 ret=0 WR_REQ [] ... i2c_slave: i2c-0 a=010 ret=0 WR_RCV [02] ... i2c_slave: i2c-0 a=010 ret=0 WR_RCV [0c] ... i2c_slave: i2c-0 a=010 ret=0 STOP [] ... i2c_slave: i2c-0 a=010 ret=0 RD_REQ [04] ... i2c_slave: i2c-0 a=010 ret=0 RD_PRO [b4] ... i2c_slave: i2c-0 a=010 ret=0 STOP [] formatted as: i2c- a= ret= <- callback return value [] trace printings can be selected by adding a filter like: echo adapter_nr==1 >/sys/kernel/tracing/events/i2c_slave/filter Signed-off-by: Jae Hyun Yoo Signed-off-by: Wolfram Sang

i2c: slave: add sanity check when unregistering

2020-07-28T16:37:17+00:00

Signed-off-by: Wolfram Sang Reviewed-by: Alain Volmat Signed-off-by: Wolfram Sang

i2c: slave: improve sanity check when registering

2020-07-28T16:37:08+00:00

Add check for ERR_PTR and simplify code while here. Signed-off-by: Wolfram Sang Reviewed-by: Alain Volmat Signed-off-by: Wolfram Sang

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

i2c: remove i2c_lock_adapter and use i2c_lock_bus directly

2018-07-12T22:09:37+00:00

The i2c_lock_adapter name is ambiguous since it is unclear if it refers to the root adapter or the adapter you name in the argument. The natural interpretation is the adapter you name in the argument, but there are historical reasons for that not being the case; it in fact locks the root adapter. Just remove the function and force users to spell out the I2C_LOCK_ROOT_ADAPTER name to indicate what is really going on. Also remove i2c_unlock_adapter, of course. This patch was generated with git grep -l 'i2c_\(un\)\?lock_adapter' \ | xargs sed -i 's/i2c_\(un\)\?lock_adapter(\([^)]*\))/'\ 'i2c_\1lock_bus(\2, I2C_LOCK_ROOT_ADAPTER)/g' followed by white-space touch-up. Signed-off-by: Peter Rosin Acked-by: Jonathan Cameron Tested-by: Sekhar Nori Signed-off-by: Wolfram Sang

i2c: break out slave support into separate file

2017-05-31T19:01:03+00:00

Also removes some ifdeffery. Reviewed-by: Andy Shevchenko Signed-off-by: Wolfram Sang