linux-kernel - Re: [PATCH] Logitech G13 driver (fixed cc list --- ignore others)

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Message-ID: <20091216103423.GE1377@ucw.cz>
Date:	Wed, 16 Dec 2009 11:34:23 +0100
From:	Pavel Machek <pavel@....cz>
To:	"Rick L. Vinyard Jr." <rvinyard@...nmsu.edu>
Cc:	linux-kernel@...r.kernel.org, krzysztof.h1@...pl,
	akpm@...ux-foundation.org, linux-usb@...r.kernel.org,
	oliver@...kum.org, linux-input@...r.kernel.org, jkosina@...e.cz
Subject: Re: [PATCH] Logitech G13 driver (fixed cc list --- ignore others)

Hi!

> This is a driver for the Logitech G13 gamepad, and contains three
> key parts. In the USB reports the device identifies itself as a
> HID, and as a result this driver is under the HID framework.
> 
> There are two primary sub-components to this driver; an input
> device and a framebuffer device.
> 
> Although identified as a HID, the device does not support standard
> HID input messages. As a result, a sub-input device is allocated and
> registered separately in g13_probe(). The raw events are monitored 
> and key presses/joystick activity is reported through the input device 
> after referencing an indexed keymap.
> 
> Additionally, this device contains a 160x43 monochrome LCD display.
> A registered framebuffer device manages this display. The design
> of this portion of the driver was based on the design of the
> hecubafb driver with deferred framebuffer I/O since there is
> no real memory to map.
> 
> This patch is against the torvalds/linux-2.6.git tree.

Should this use auxdisplay framework and be located there?

> --- /dev/null
> +++ b/drivers/hid/hid-g13-logo.xbm
> @@ -0,0 +1,75 @@
> +#define g13_lcd_width 160
> +#define g13_lcd_height 43
> +static unsigned char g13_lcd_bits[] = {
> +   0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +   0x00, 0x00, 0x00, 0x28, 0x03, 0x00, 0x40, 0x01, 0x00, 0xc0, 0x3f, 0x00,
> +   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa1,
> +   0x08, 0x00, 0x08, 0x00, 0x00, 0xe0, 0x7f, 0x00, 0x00, 0x00,
> 0x00, 0x00,

I'd prefer to go without another logo. Just make sure default penguin gets
there or something.

									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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