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740329d712
Added a gpiochip compatible driver to control the 8 GPIOs of the MCP2200 by using the HID interface. Using GPIOs with alternative functions (GP0<->SSPND, GP1<->USBCFG, GP6<->RXLED, GP7<->TXLED) will reset the functions, if set (unset by default). The driver was tested while also using the UART of the chip. Setting and reading the GPIOs has no effect on the UART communication. However, a reset is triggered after the CONFIGURE command. If the GPIO Direction is constantly changed, this will affect the communication at low baud rates. This is a hardware problem of the MCP2200 and is not caused by the driver. Signed-off-by: Johannes Roith <johannes@gnu-linux.rocks> Reviewed-by: Rahul Rameshbabu <sergeantsagara@protonmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
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| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.