diff options
| author | Johannes Roith <johannes@gnu-linux.rocks> | 2023-09-21 19:49:28 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2023-11-21 11:27:18 +0300 |
| commit | 740329d7120f8608ead64b0f3417c02ca1d6b32f (patch) | |
| tree | 6a497b56385c0bd2cdb6f7fe550cfcd8ab00ccdf /drivers/hid/Kconfig | |
| parent | 4ea4ed22b57846facd9cb4af5f67cb7bd2792cf3 (diff) | |
| download | linux-740329d7120f8608ead64b0f3417c02ca1d6b32f.tar.xz | |
HID: mcp2200: added driver for GPIOs of MCP2200
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>
Diffstat (limited to 'drivers/hid/Kconfig')
| -rw-r--r-- | drivers/hid/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 4ce74af79657..03e7fc3d05a5 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -1296,6 +1296,15 @@ config HID_ALPS Say Y here if you have a Alps touchpads over i2c-hid or usbhid and want support for its special functionalities. +config HID_MCP2200 + tristate "Microchip MCP2200 HID USB-to-GPIO bridge" + depends on USB_HID && GPIOLIB + help + Provides GPIO functionality over USB-HID through MCP2200 device. + + To compile this driver as a module, choose M here: the module + will be called hid-mcp2200.ko. + config HID_MCP2221 tristate "Microchip MCP2221 HID USB-to-I2C/SMbus host support" depends on USB_HID && I2C |