linux-kernel - Re: [PATCH v15 09/12] input: cyapa: add gen5 trackpad device firmware update function support

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Message-ID: <20141216135639.GA1238@hudson.localdomain>
Date:	Tue, 16 Dec 2014 05:56:39 -0800
From:	Jeremiah Mahler <jmmahler@...il.com>
To:	Dudley Du <dudley.dulixin@...il.com>
Cc:	dmitry.torokhov@...il.com, rydberg@...omail.se, bleung@...gle.com,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v15 09/12] input: cyapa: add gen5 trackpad device
 firmware update function support

Dudley,

On Mon, Dec 15, 2014 at 02:23:20PM +0800, Dudley Du wrote:
> Add firmware image update function supported for gen5 trackpad device,
> it can be used through sysfs update_fw interface.
> TEST=test on Chromebooks.
> 
> Signed-off-by: Dudley Du <dudley.dulixin@...il.com>
> ---
>  drivers/input/mouse/Kconfig      |   1 +
>  drivers/input/mouse/cyapa_gen5.c | 292 ++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 292 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
> index d8b46b0..728490e 100644
> --- a/drivers/input/mouse/Kconfig
> +++ b/drivers/input/mouse/Kconfig
> @@ -206,6 +206,7 @@ config MOUSE_BCM5974
>  config MOUSE_CYAPA
>  	tristate "Cypress APA I2C Trackpad support"
>  	depends on I2C
> +	select CRC_ITU_T
>  	help

Just found out that if I2C_DESIGNWARE_PCI isn't enabled the touchpad
won't work.  Verify this on your machines.  Then perhaps add a depends
for I2C_DESIGNWARE_PCI instead of I2C since it would include the former.

[...]

-- 
- Jeremiah Mahler
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