diff options
| author | Octavian Purdila <octavian.purdila@intel.com> | 2014-11-06 13:48:03 (GMT) |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2014-11-10 16:30:05 (GMT) |
| commit | 338a128142975439a19ab3c91480bc9d5a71f033 (patch) | |
| tree | 429db757bfed482b0610b470d1e41e94b5206329 /drivers/mfd/Kconfig | |
| parent | a7975473cc41773d9f6d8ea72b48c7656e6cd0f6 (diff) | |
| download | linux-338a128142975439a19ab3c91480bc9d5a71f033.tar.xz | |
mfd: Add support for Diolan DLN-2 devices
This patch implements the USB part of the Diolan USB-I2C/SPI/GPIO
Master Adapter DLN-2. Details about the device can be found here:
https://www.diolan.com/i2c/i2c_interface.html.
Information about the USB protocol can be found in the Programmer's
Reference Manual [1], see section 1.7.
Because the hardware has a single transmit endpoint and a single
receive endpoint the communication between the various DLN2 drivers
and the hardware will be muxed/demuxed by this driver.
Each DLN2 module will be identified by the handle field within the DLN2
message header. If a DLN2 module issues multiple commands in parallel
they will be identified by the echo counter field in the message header.
The DLN2 modules can use the dln2_transfer() function to issue a
command and wait for its response. They can also register a callback
that is going to be called when a specific event id is generated by
the device (e.g. GPIO interrupts). The device uses handle 0 for
sending events.
[1] https://www.diolan.com/downloads/dln-api-manual.pdf
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/Kconfig')
| -rw-r--r-- | drivers/mfd/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 1456ea7..c1acc76 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -183,6 +183,16 @@ config MFD_DA9063 Additional drivers must be enabled in order to use the functionality of the device. +config MFD_DLN2 + tristate "Diolan DLN2 support" + select MFD_CORE + depends on USB + help + This adds support for Diolan USB-I2C/SPI/GPIO Master Adapter + DLN-2. Additional drivers such as I2C_DLN2, GPIO_DLN2, + etc. must be enabled in order to use the functionality of + the device. + config MFD_MC13XXX tristate depends on (SPI_MASTER || I2C) |