Re: [PATCH v4 1/4] drivers/mfd/menf21bmc: introduce MEN 14F021P00 BMC MFD Core driver

Lee Jones
2014-08-21T11:30:54Z

On Wed, 13 Aug 2014, Andreas Werner wrote:
> The MEN 14F021P00 Board Management Controller provides an
> I2C interface to the host to access the feature implemented in the BMC.
> The BMC is a PIC Microntroller assembled on CPCI Card from MEN Mikroelektronik
> and on a few Box/Display Computer.
>
> Added MFD Core driver, supporting the I2C communication to the device.
>
> The MFD driver currently supports the following features:
> - Watchdog
> - LEDs
> - Hwmon (voltage monitoring)
>
> Signed-off-by: Andreas Werner <andreas.werner@men.de>
> ---
> drivers/mfd/Kconfig | 12 +++++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/menf21bmc.c | 132 ++++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 145 insertions(+)
> create mode 100644 drivers/mfd/menf21bmc.c
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index b8d9ca0..bf155b9 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -453,6 +453,18 @@ config MFD_MAX8998
> additional drivers must be enabled in order to use the functionality
> of the device.
>
> +config MFD_MENF21BMC
> + tristate "MEN 14F021P00 Board Management Controller Support"
> + depends on I2C=y

Why must I2C be built-in?

> + select MFD_CORE
> + help
> + Say yes here to add support for the MEN 14F021P00 BMC
> + which is a Board Management Controller connected to the I2C bus.
> + The device supports multiple sub-devices like LED, HWMON and WDT.
> + This driver provides common support for accessing the devices;
> + additional drivers must be enabled in order to use the
> + functionality of the BMC device.
> +

Apart from that the patch looks good to me.

I'm assuming this can go in via the MFD tree by itself?

Acked-by: Lee Jones <lee.jones@linaro.org>

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
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