linux-stable.git/Documentation/i2c, branch v5.2 Linux kernel stable tree i2c-piix4: Add Hygon Dhyana SMBus support 2019-05-03T14:47:54+00:00 Pu Wen puwen@hygon.cn 2019-04-29T16:08:43+00:00 24beb83ad289c68bce7c01351cb90465bbb1940a The Hygon Dhyana CPU has the SMBus device with PCI device ID 0x790b, which is the same as AMD CZ SMBus device. So add Hygon Dhyana support to the i2c-piix4 driver by using the code path of AMD. Signed-off-by: Pu Wen <puwen@hygon.cn> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
The Hygon Dhyana CPU has the SMBus device with PCI device ID 0x790b,
which is the same as AMD CZ SMBus device. So add Hygon Dhyana support
to the i2c-piix4 driver by using the code path of AMD.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into i2c/for-5.2 2019-05-03T13:20:58+00:00 Wolfram Sang wsa@the-dreams.de 2019-05-03T13:20:04+00:00 d00afd5ede1c29a6dc59be2d7fb7d6ef28eb85c5 Mainly some pca954x work, i.e. removal of unused platform data support and added support for sysfs interface for manipulating/examining the idle state. And then a mechanical cocci-style patch. 
Mainly some pca954x work, i.e. removal of unused platform data support
and added support for sysfs interface for manipulating/examining the
idle state. And then a mechanical cocci-style patch.
i2c: Add drivers for the AMD PCIe MP2 I2C controller 2019-03-25T14:21:17+00:00 Elie Morisse syniurge@gmail.com 2019-03-05T15:13:19+00:00 529766e0a0114438887382a68d97341fbf8349fb MP2 controllers have two separate busses, so may accommodate up to two I2C adapters. Those adapters are listed in the ACPI namespace with the "AMDI0011" HID, and probed by a platform driver. Communication with the MP2 takes place through MMIO registers, or through DMA for more than 32 bytes transfers. This is major rework of the patch submitted by Nehal-bakulchandra Shah from AMD (https://patchwork.kernel.org/patch/10597369/). Most of the event handling of v3 was rewritten to make it work with more than one bus (e.g on Ryzen-based Lenovo Yoga 530), and this version contains many other improvements. Signed-off-by: Elie Morisse <syniurge@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
MP2 controllers have two separate busses, so may accommodate up to two I2C
adapters. Those adapters are listed in the ACPI namespace with the
"AMDI0011" HID, and probed by a platform driver.

Communication with the MP2 takes place through MMIO registers, or through
DMA for more than 32 bytes transfers.

This is major rework of the patch submitted by Nehal-bakulchandra Shah from
AMD (https://patchwork.kernel.org/patch/10597369/).

Most of the event handling of v3 was rewritten to make it work with more
than one bus (e.g on Ryzen-based Lenovo Yoga 530), and this version
contains many other improvements.

Signed-off-by: Elie Morisse <syniurge@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: i801: Add support for Intel Comet Lake 2019-03-20T16:42:23+00:00 Jarkko Nikula jarkko.nikula@linux.intel.com 2019-03-15T10:56:49+00:00 5cd1c56c42beb6d228cc8d4373fdc5f5ec78a5ad Add PCI ID for Intel Comet Lake PCH. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
Add PCI ID for Intel Comet Lake PCH.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: gpio: fault-injector: add 'inject_panic' injector 2019-02-23T09:34:08+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2019-02-19T16:39:46+00:00 bb6bdd51c838e8d046a84502f12619de4fd58d69 Add a fault injector simulating a Kernel panic happening after starting a transfer. Read the docs for its usage. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
Add a fault injector simulating a Kernel panic happening after starting
a transfer. Read the docs for its usage.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: gpio: fault-injector: add 'lose_arbitration' injector 2019-02-23T09:33:51+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2019-02-19T16:39:45+00:00 63e57b6f191db99ffdd0dc6c7b9ee6b2cf7abb04 Add a fault injector simulating 'arbitration lost' from multi-master setups. Read the docs for its usage. A helper function for future fault injectors using SCL interrupts is created to achieve this. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
Add a fault injector simulating 'arbitration lost' from multi-master
setups. Read the docs for its usage.

A helper function for future fault injectors using SCL interrupts is
created to achieve this.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: gpio: fault-injector: better SPHINX style in docs 2019-02-05T13:19:55+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2019-01-21T14:16:57+00:00 05bd07280d5f70920c3619998b3a79742e4cde30 We don't use SPHINX currently in I2C documentation; but preparing the I2C fault injector docs already is a good idea since it makes it easier to read. Especially as new stuff is going to be added soon. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
We don't use SPHINX currently in I2C documentation; but preparing the
I2C fault injector docs already is a good idea since it makes it easier
to read. Especially as new stuff is going to be added soon.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: add suspended flag and accessors for i2c adapters 2019-01-08T20:01:07+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2018-12-19T16:48:17+00:00 9ac6cb5fbb1781d120ca0ad29d014d35c9c3f0c4 A few drivers open code the handling of suspended adapters. It could be handled by the core, though, to ensure generic handling. This patch adds the flag and accessor functions. The usage of these helpers is optional, though. See the kerneldoc in this patch. Using the new flag, we now reject further transfers if the adapter is already marked suspended. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
A few drivers open code the handling of suspended adapters. It could be
handled by the core, though, to ensure generic handling. This patch adds
the flag and accessor functions. The usage of these helpers is optional,
though. See the kerneldoc in this patch. Using the new flag, we now
reject further transfers if the adapter is already marked suspended.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: add i2c bus driver for NVIDIA GPU 2018-11-09T16:46:43+00:00 Ajay Gupta ajayg@nvidia.com 2018-10-26T16:36:58+00:00 c71bcdcb42a7493348d3b45dee8139843bf45efc Latest NVIDIA GPU card has USB Type-C interface. There is a Type-C controller which can be accessed over I2C. This driver adds I2C bus driver to communicate with Type-C controller. I2C client driver will be part of USB Type-C UCSI driver. Signed-off-by: Ajay Gupta <ajayg@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> [wsa: kept Makefile sorting] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
Latest NVIDIA GPU card has USB Type-C interface. There is a
Type-C controller which can be accessed over I2C.

This driver adds I2C bus driver to communicate with Type-C controller.
I2C client driver will be part of USB Type-C UCSI driver.

Signed-off-by: Ajay Gupta <ajayg@nvidia.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[wsa: kept Makefile sorting]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: refactor function to release a DMA safe buffer 2018-08-30T21:13:15+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2018-08-24T14:52:44+00:00 82fe39a6bc7b866fc3ffd838e3c5a4cadb328b04 a) rename to 'put' instead of 'release' to match 'get' when obtaining the buffer b) change the argument order to have the buffer as first argument c) add a new argument telling the function if the message was transferred. This allows the function to be used also in cases where setting up DMA failed, so the buffer needs to be freed without syncing to the message buffer. Also convert the only user. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
a) rename to 'put' instead of 'release' to match 'get' when obtaining
   the buffer
b) change the argument order to have the buffer as first argument
c) add a new argument telling the function if the message was
   transferred. This allows the function to be used also in cases
   where setting up DMA failed, so the buffer needs to be freed without
   syncing to the message buffer.

Also convert the only user.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>