kernel/linux.git/include/linux/i3c, branch v6.6.39

i3c: add actual_len in i3c_priv_xfer

2024-06-12T09:12:49+00:00

[ Upstream commit e5e3df06ac98d15cfb10bb5c12356709365e91b2 ] In MIPI I3C Specification: "Ninth Bit of SDR Target Returned (Read) Data as End-of-Data: In I2C, the ninth Data bit from Target to Controller is an ACK by the Controller. By contrast, in I3C this bit allows the Target to end a Read, and allows the Controller to Abort a Read. In SDR terms, the ninth bit of Read data is referred to as the T-Bit (for ‘Transition’)" I3C allow devices early terminate data transfer. So need "actual_len" field to indicate how much get by i3c_priv_xfer. Reviewed-by: Miquel Raynal Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20231201222532.2431484-4-Frank.Li@nxp.com Signed-off-by: Alexandre Belloni Stable-dep-of: 7f3d633b460b ("i3c: master: svc: change ENXIO to EAGAIN when IBI occurs during start frame") Signed-off-by: Sasha Levin

i3c: Make i3c_master_unregister() return void

2023-03-21T18:25:25+00:00

The function returned zero unconditionally. Switch the return type to void and simplify the callers accordingly. Signed-off-by: Uwe Kleine-König Reviewed-by: Miquel Raynal Link: https://lore.kernel.org/r/20230318233311.265186-2-u.kleine-koenig@pengutronix.de Signed-off-by: Alexandre Belloni

i3c: Correct reference to the I²C device data type

2023-03-13T13:41:04+00:00

I²C peripheral devices that are connected to the controller are represented in the Linux kernel as objects of the struct i2c_client. Fix this in the header file. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230302161206.38106-1-andriy.shevchenko@linux.intel.com Signed-off-by: Alexandre Belloni

i3c: fix device.h kernel-doc warnings

2023-02-16T12:42:22+00:00

Fix all kernel-doc warnings in : include/linux/i3c/device.h:27: warning: contents before sections include/linux/i3c/device.h:196: warning: Excess function parameter 'dev' description in 'dev_to_i3cdev' Fixes: fa838c8ce537 ("i3c: move dev_to_i3cdev() to use container_of_const()") Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure") Signed-off-by: Randy Dunlap Cc: Boris Brezillon Cc: Greg Kroah-Hartman Cc: Alexandre Belloni Cc: linux-i3c@lists.infradead.org Link: https://lore.kernel.org/r/20230213070324.1564-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman

driver core: make struct device_type.uevent() take a const *

2023-01-27T12:45:36+00:00

The uevent() callback in struct device_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Cc: Alan Stern Cc: Andreas Noever Cc: Andy Shevchenko Cc: Bard Liao Cc: Chaitanya Kulkarni Cc: Dan Williams Cc: Dmitry Torokhov Cc: Frank Rowand Cc: Ira Weiny Cc: Jason Gunthorpe Cc: Jens Axboe Cc: Jilin Yuan Cc: Jiri Slaby Cc: Len Brown Cc: Mark Gross Cc: "Martin K. Petersen" Cc: "Matthew Wilcox (Oracle)" Cc: Maximilian Luz Cc: Michael Jamet Cc: Ming Lei Cc: Pierre-Louis Bossart Cc: Rob Herring Cc: Sakari Ailus Cc: Sanyog Kale Cc: Sean Young Cc: Stefan Richter Cc: Thomas Gleixner Cc: Won Chung Cc: Yehezkel Bernat Acked-by: Rafael J. Wysocki Acked-by: Mika Westerberg # for Thunderbolt Acked-by: Mauro Carvalho Chehab Acked-by: Alexandre Belloni Acked-by: Heikki Krogerus Acked-by: Wolfram Sang Acked-by: Vinod Koul Acked-by: Hans de Goede Link: https://lore.kernel.org/r/20230111113018.459199-6-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

i3c: move dev_to_i3cdev() to use container_of_const()

2023-01-27T12:45:32+00:00

The driver core is changing to pass some pointers as const, so move dev_to_i3cdev() to use container_of_const() to handle this change. dev_to_i3cdev() now properly keeps the const-ness of the pointer passed into it, while as before it could be lost. Acked-by: Alexandre Belloni Acked-by: Hans de Goede Link: https://lore.kernel.org/r/20230111113018.459199-3-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

i3c: export SETDASA method

2022-12-11T20:25:58+00:00

Because not all I3C drivers have the hot-join feature ready, and especially not all I3C devices support hot-join feature, exporting SETDASA method could be useful. With this function, the I3C controller could perform a DAA to I3C devices when users decide to turn these I3C devices off and on again during run-time. Tested: This change has been tested with turnning off an I3C device and turning on it again during run-time. The device driver calls SETDASA method to perform DAA to the device. And communication between I3C controller and device is set up again correctly. Signed-off-by: Jack Chen Link: https://lore.kernel.org/r/20221207205059.3848851-1-zenghuchen@google.com Signed-off-by: Alexandre Belloni

i3c: Correct the macro module_i3c_i2c_driver

2022-12-11T20:20:27+00:00

Present definition for module_i3c_i2c_driver uses only the 1st argument i.e., struct i3c_driver. Irrespective of CONFIG_I3C being enabled/disabled, struct i2c_driver is never passed to module_driver() Passing struct i2c_driver as the 4th argument works. Signed-off-by: Akshay Gupta Signed-off-by: Naveen Krishna Chatradhi Link: https://lore.kernel.org/r/20221205105413.937704-1-naveenkrishna.chatradhi@amd.com Signed-off-by: Alexandre Belloni

Merge tag 'i3c/for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

2022-03-30T17:36:41+00:00

Pull i3c updates from Alexandre Belloni: - support dynamic addition of i2c devices * tag 'i3c/for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: i3c: fix uninitialized variable use in i2c setup i3c: support dynamically added i2c devices i3c: remove i2c board info from i2c_dev_desc

i3c: remove i2c board info from i2c_dev_desc

2022-03-04T10:39:03+00:00

I2C board info is only required during adapter setup so there is no requirement to keeping a pointer to it once running. To support dynamic device addition we can't rely on board info - user-space creation through sysfs won't have a boardinfo. Cc: Alexandre Belloni Signed-off-by: Jamie Iles Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20220117174816.1963463-2-quic_jiles@quicinc.com