linux-kernel - Re: [PATCH] HID: usbhid: quirk for N-Trig DuoSense Touch Screen

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Message-ID: <CAN+gG=H=r3HH=J+1eMUWSiruEm3F64E6UfH5djjR_Xfk+kmmtQ@mail.gmail.com>
Date:	Fri, 30 Aug 2013 21:18:59 +0200
From:	Benjamin Tissoires <benjamin.tissoires@...il.com>
To:	Vasily Titskiy <qehgt0@...il.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-input <linux-input@...r.kernel.org>,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: [PATCH] HID: usbhid: quirk for N-Trig DuoSense Touch Screen

Hi,

first, for the next submission, do not forget to add Jiri (the HID
maintainer) in CC, otherwise there are huge chances that he will miss
your patch.

On Fri, Aug 30, 2013 at 8:47 PM, Vasily Titskiy <qehgt0@...il.com> wrote:
> The DuoSense touchscreen device causes a 10 second timeout. This fix
> removes the delay.
>
> Signed-off-by: Vasily Titskiy <qehgt0@...il.com>
> ---
>  drivers/hid/hid-ids.h           |    2 ++
>  drivers/hid/usbhid/hid-quirks.c |    3 +++
>  2 files changed, 5 insertions(+)
>
> diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
> index 2168885..c3929ea 100644
> --- a/drivers/hid/hid-ids.h
> +++ b/drivers/hid/hid-ids.h
> @@ -898,4 +898,6 @@
>  #define USB_VENDOR_ID_PRIMAX 0x0461
>  #define USB_DEVICE_ID_PRIMAX_KEYBOARD 0x4e05
>
> +#define USB_DEVICE_ID_NTRIG_DUOSENSE 0x1500
> +

Please keep the list sorted. This define should go into the *_NTRIG_* block.

>  #endif
> diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
> index 19b8360..3fd4dfd 100644
> --- a/drivers/hid/usbhid/hid-quirks.c
> +++ b/drivers/hid/usbhid/hid-quirks.c
> @@ -89,6 +89,9 @@ static const struct hid_blacklist {
>   { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET },
>   { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN, HID_QUIRK_NOGET },
>   { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
> +

extra whitespace

> + { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NOGET },

I'm sure we could try here the new quirk
HID_QUIRK_NO_INIT_INPUT_REPORTS, this would be more accurate I think.
At least can you test if HID_QUIRK_NO_INIT_REPORTS is enough?
HID_QUIRK_NOGET prevent all request from the host to the device, which
is a little bit too much in many cases.

> +

extra whitespace too.

Cheers,
Benjamin


>   { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209,
> HID_QUIRK_MULTI_INPUT },
>   { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U,
> HID_QUIRK_MULTI_INPUT },
>   { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5,
> HID_QUIRK_MULTI_INPUT },
> --
> 1.7.10.4
> --
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