mbox series

[v3,0/8] I3C target mode support

Message ID 20240123212549.3858137-1-Frank.Li@nxp.com
Headers
Series I3C target mode support |

Message

Frank Li Jan. 23, 2024, 9:25 p.m. UTC 
  This  patch introduces support for I3C target mode, which is referenced
with a PCIe Endpoint system. It also establishes a configuration framework
(configfs) for the I3C target controller driver and the I3C target function
driver

Typic usage as

The user can configure the i3c-target-tty device using configfs entry. In
order to change the vendorid, the following commands can be used

        # echo 0x011b > functions/tty/func1/vendor_id
        # echo 0x1000 > functions/tty/func1/part_id
        # echo 0x6 > functions/tty/t/bcr

Binding i3c-target-tty Device to target Controller
------------------------------------------------

In order for the target function device to be useful, it has to be bound to
a I3C target controller driver. Use the configfs to bind the function
device to one of the controller driver present in the system::

        # ln -s functions/pci_epf_test/func1 controllers/44330000.i3c-target/

Host side:
        cat /dev/ttyI3C0
Taret side:
        echo abc >/dev/ttyI3C0

Chagne from v2 to v3
- using 'mode' distingiush master and target.
- move svc-i3c-target.c to under master,
- built together with svc-i3c-master.c

Change from v1 to v2
- change "slave" to "target"
- include master side tty patch
- fixed dtbcheck problem
- fixed kerne-doc check warning

Some review comment may be lost since it is quite long time since v1. Now
master side dependent patches already in linux-next. So sent target side
patches with tty support again.

No sure why an additional "\r\n" appended.

Frank Li (8):
  i3c: add target mode support
  dt-bindings: i3c: svc: add proptery mode
  Documentation: i3c: Add I3C target mode controller and function
  i3c: svc: Add svc-i3c-main.c and svc-i3c.h
  i3c: target: add svc target controller support
  i3c: target: func: add tty driver
  i3c: add API i3c_dev_gettstatus_format1() to get target device status
  tty: i3c: add TTY over I3C master support

 .../bindings/i3c/silvaco,i3c-master.yaml      |  11 +-
 Documentation/driver-api/i3c/index.rst        |   1 +
 .../driver-api/i3c/target/i3c-target-cfs.rst  | 109 +++
 .../driver-api/i3c/target/i3c-target.rst      | 189 +++++
 .../driver-api/i3c/target/i3c-tty-howto.rst   | 109 +++
 Documentation/driver-api/i3c/target/index.rst |  13 +
 drivers/i3c/Kconfig                           |  31 +-
 drivers/i3c/Makefile                          |   3 +
 drivers/i3c/device.c                          |  24 +
 drivers/i3c/func/Kconfig                      |   9 +
 drivers/i3c/func/Makefile                     |   3 +
 drivers/i3c/func/tty.c                        | 475 +++++++++++
 drivers/i3c/i3c-cfs.c                         | 389 +++++++++
 drivers/i3c/internals.h                       |   1 +
 drivers/i3c/master.c                          |  26 +
 drivers/i3c/master/Makefile                   |   3 +-
 drivers/i3c/master/svc-i3c-main.c             |  79 ++
 drivers/i3c/master/svc-i3c-master.c           |  34 +-
 drivers/i3c/master/svc-i3c-target.c           | 776 ++++++++++++++++++
 drivers/i3c/master/svc-i3c.h                  |  14 +
 drivers/i3c/target.c                          | 453 ++++++++++
 drivers/tty/Kconfig                           |  13 +
 drivers/tty/Makefile                          |   1 +
 drivers/tty/i3c_tty.c                         | 426 ++++++++++
 include/linux/i3c/device.h                    |   1 +
 include/linux/i3c/target.h                    | 527 ++++++++++++
 26 files changed, 3689 insertions(+), 31 deletions(-)
 create mode 100644 Documentation/driver-api/i3c/target/i3c-target-cfs.rst
 create mode 100644 Documentation/driver-api/i3c/target/i3c-target.rst
 create mode 100644 Documentation/driver-api/i3c/target/i3c-tty-howto.rst
 create mode 100644 Documentation/driver-api/i3c/target/index.rst
 create mode 100644 drivers/i3c/func/Kconfig
 create mode 100644 drivers/i3c/func/Makefile
 create mode 100644 drivers/i3c/func/tty.c
 create mode 100644 drivers/i3c/i3c-cfs.c
 create mode 100644 drivers/i3c/master/svc-i3c-main.c
 create mode 100644 drivers/i3c/master/svc-i3c-target.c
 create mode 100644 drivers/i3c/master/svc-i3c.h
 create mode 100644 drivers/i3c/target.c
 create mode 100644 drivers/tty/i3c_tty.c
 create mode 100644 include/linux/i3c/target.h

Comments

Frank Li Jan. 23, 2024, 11:12 p.m. UTC | #1 
On Tue, Jan 23, 2024 at 04:25:41PM -0500, Frank Li wrote:
> This  patch introduces support for I3C target mode, which is referenced

Please forget v3 and check v4.

Frank

> with a PCIe Endpoint system. It also establishes a configuration framework
> (configfs) for the I3C target controller driver and the I3C target function
> driver
> 
> Typic usage as
> 
> The user can configure the i3c-target-tty device using configfs entry. In
> order to change the vendorid, the following commands can be used
> 
>         # echo 0x011b > functions/tty/func1/vendor_id
>         # echo 0x1000 > functions/tty/func1/part_id
>         # echo 0x6 > functions/tty/t/bcr
> 
> Binding i3c-target-tty Device to target Controller
> ------------------------------------------------
> 
> In order for the target function device to be useful, it has to be bound to
> a I3C target controller driver. Use the configfs to bind the function
> device to one of the controller driver present in the system::
> 
>         # ln -s functions/pci_epf_test/func1 controllers/44330000.i3c-target/
> 
> Host side:
>         cat /dev/ttyI3C0
> Taret side:
>         echo abc >/dev/ttyI3C0
> 
> Chagne from v2 to v3
> - using 'mode' distingiush master and target.
> - move svc-i3c-target.c to under master,
> - built together with svc-i3c-master.c
> 
> Change from v1 to v2
> - change "slave" to "target"
> - include master side tty patch
> - fixed dtbcheck problem
> - fixed kerne-doc check warning
> 
> Some review comment may be lost since it is quite long time since v1. Now
> master side dependent patches already in linux-next. So sent target side
> patches with tty support again.
> 
> No sure why an additional "\r\n" appended.
> 
> Frank Li (8):
>   i3c: add target mode support
>   dt-bindings: i3c: svc: add proptery mode
>   Documentation: i3c: Add I3C target mode controller and function
>   i3c: svc: Add svc-i3c-main.c and svc-i3c.h
>   i3c: target: add svc target controller support
>   i3c: target: func: add tty driver
>   i3c: add API i3c_dev_gettstatus_format1() to get target device status
>   tty: i3c: add TTY over I3C master support
> 
>  .../bindings/i3c/silvaco,i3c-master.yaml      |  11 +-
>  Documentation/driver-api/i3c/index.rst        |   1 +
>  .../driver-api/i3c/target/i3c-target-cfs.rst  | 109 +++
>  .../driver-api/i3c/target/i3c-target.rst      | 189 +++++
>  .../driver-api/i3c/target/i3c-tty-howto.rst   | 109 +++
>  Documentation/driver-api/i3c/target/index.rst |  13 +
>  drivers/i3c/Kconfig                           |  31 +-
>  drivers/i3c/Makefile                          |   3 +
>  drivers/i3c/device.c                          |  24 +
>  drivers/i3c/func/Kconfig                      |   9 +
>  drivers/i3c/func/Makefile                     |   3 +
>  drivers/i3c/func/tty.c                        | 475 +++++++++++
>  drivers/i3c/i3c-cfs.c                         | 389 +++++++++
>  drivers/i3c/internals.h                       |   1 +
>  drivers/i3c/master.c                          |  26 +
>  drivers/i3c/master/Makefile                   |   3 +-
>  drivers/i3c/master/svc-i3c-main.c             |  79 ++
>  drivers/i3c/master/svc-i3c-master.c           |  34 +-
>  drivers/i3c/master/svc-i3c-target.c           | 776 ++++++++++++++++++
>  drivers/i3c/master/svc-i3c.h                  |  14 +
>  drivers/i3c/target.c                          | 453 ++++++++++
>  drivers/tty/Kconfig                           |  13 +
>  drivers/tty/Makefile                          |   1 +
>  drivers/tty/i3c_tty.c                         | 426 ++++++++++
>  include/linux/i3c/device.h                    |   1 +
>  include/linux/i3c/target.h                    | 527 ++++++++++++
>  26 files changed, 3689 insertions(+), 31 deletions(-)
>  create mode 100644 Documentation/driver-api/i3c/target/i3c-target-cfs.rst
>  create mode 100644 Documentation/driver-api/i3c/target/i3c-target.rst
>  create mode 100644 Documentation/driver-api/i3c/target/i3c-tty-howto.rst
>  create mode 100644 Documentation/driver-api/i3c/target/index.rst
>  create mode 100644 drivers/i3c/func/Kconfig
>  create mode 100644 drivers/i3c/func/Makefile
>  create mode 100644 drivers/i3c/func/tty.c
>  create mode 100644 drivers/i3c/i3c-cfs.c
>  create mode 100644 drivers/i3c/master/svc-i3c-main.c
>  create mode 100644 drivers/i3c/master/svc-i3c-target.c
>  create mode 100644 drivers/i3c/master/svc-i3c.h
>  create mode 100644 drivers/i3c/target.c
>  create mode 100644 drivers/tty/i3c_tty.c
>  create mode 100644 include/linux/i3c/target.h
> 
> -- 
> 2.34.1
>