linux-kernel - Re: [PATCH v4 2/3] mfd: cros_ec: instantiate properly CrOS FP MCU device

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Message-ID: <20190508120014.GR31645@dell>
Date:   Wed, 8 May 2019 13:00:14 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     gwendal@...omium.org, bleung@...omium.org,
        linux-kernel@...r.kernel.org, groeck@...omium.org,
        kernel@...labora.com, dtor@...omium.org,
        rushikesh.s.kadam@...el.com,
        Vincent Palatin <vpalatin@...omium.org>
Subject: Re: [PATCH v4 2/3] mfd: cros_ec: instantiate properly CrOS FP MCU
 device

On Wed, 08 May 2019, Enric Balletbo i Serra wrote:

> Support Fingerprint MCU as a special of CrOS EC devices. The current FP
> MCU uses the same EC SPI protocol v3 as other CrOS EC devices on a SPI
> bus.
> 
> When a MCU has fingerprint support (aka EC_FEATURE_FINGERPRINT), it is
> instantiated as a special CrOS EC device with device name 'cros_fp'. So
> regardless of the probing order between the actual cros_ec and cros_fp,
> the userspace and other kernel drivers should not confuse them.
> 
> Signed-off-by: Vincent Palatin <vpalatin@...omium.org>
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
> 
> Changes in v4: None
> Changes in v3: None
> Changes in v2: None
> 
>  drivers/mfd/cros_ec_dev.c   | 10 ++++++++++
>  include/linux/mfd/cros_ec.h |  1 +
>  2 files changed, 11 insertions(+)

Applied, thanks.

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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