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SubjectRe: [PATCH RESEND] HID: New hid-cp2112 driver.

[ adding Benjamin to CC ]

On Tue, 27 Aug 2013, David Barksdale wrote:

> This patch adds support for the Silicon Labs CP2112
> "Single-Chip HID USB to SMBus Master Bridge."
>
> I wrote this to support a USB temperature and humidity
> sensor I've been working on. It's been tested by using
> SMBus byte-read, byte-data-read/write, and word-data-read
> transfer modes to talk to an I2C sensor. The other
> transfer modes have not been tested.
>
> Signed-off-by: David Barksdale <dbarksdale@uplogix.com>
>
> ---
> drivers/hid/Kconfig | 6 +
> drivers/hid/Makefile | 1 +
> drivers/hid/hid-core.c | 3 +
> drivers/hid/hid-cp2112.c | 504 +++++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 514 insertions(+)
>
> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
> index 14ef6ab..1833948 100644
> --- a/drivers/hid/Kconfig
> +++ b/drivers/hid/Kconfig
> @@ -175,6 +175,12 @@ config HID_PRODIKEYS
> multimedia keyboard, but will lack support for the musical keyboard
> and some additional multimedia keys.
>
> +config HID_CP2112
> + tristate "Silicon Labs CP2112 HID USB-to-SMBus Bridge support"
> + depends on USB_HID
> + ---help---
> + Support for Silicon Labs CP2112 HID USB to SMBus Master Bridge.
> +

Hi David,

this is rather difficult to get by quickly looking at the code, so I'd
like to have a slightly better overview of what the device really is.

Is it talking HID protocol on the SMBus? (if so, there is a hid-i2c
transport driver for it already).
But I guess this is not really the case, as you seem to be using the USB
HID functionality as well.

Thanks in advance for some more background.

--
Jiri Kosina
SUSE Labs


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