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