Re: [PATCH] Add quirks required to make a Shuttle PN-31 remote control work

[Vojtech Pavlik]

On Mon, Mar 20, 2006 at 11:59:24PM +0100, Bernhard Rosenkraenzer wrote:
> Add some quirks to make a Shuttle PN-31 remote control work.
> 
> Shuttle PN31 remote controls are supposed to act as a USB keyboard and mouse,
> but they (in particular the mouse part) don't follow the standards.
>  
> 5 quirks are needed to get this device to work, 2 of which are unique to this
> device so far (it sets a superfluous extra bit on the GenericDesktop keycodes,
> and the mouse flags are wrong (_Constant_, Variable, Relative). 
> 
> Tested with 2.6.16-rc6-mm1 and 2.6.16-rc6-mm2.

Can you send me the #define DEBUG output from hid-core and hid-input?
I'm quite curious how much broken the device is and if it weren't easier
to implement a way how to replace the HID Report descriptor inside
hid-core instead of adding more quirks.

> 
> Signed-off-by: Bernhard Rosenkraenzer <bero@xxxxxxxxxxxx>
> 
> ---
> 
> --- linux-2.6.15/drivers/usb/input/hid.h.pn31~	2006-01-22 18:12:59.000000000 
> +0100
> +++ linux-2.6.15/drivers/usb/input/hid.h	2006-01-22 19:47:13.000000000 +0100
> @@ -249,6 +249,9 @@
>  #define HID_QUIRK_CYMOTION			0x00000800
>  #define HID_QUIRK_POWERBOOK_HAS_FN		0x00001000
>  #define HID_QUIRK_POWERBOOK_FN_ON		0x00002000
> +#define HID_QUIRK_BAD_LOGICAL_RANGE		0x00004000
> +#define HID_QUIRK_WRONG_CONSTANT		0x00008000
> +#define HID_QUIRK_GENDESK_EXTRA_BIT		0x00010000
>  
>  /*
>   * This is the global environment of the parser. This information is
> --- linux-2.6.15/drivers/usb/input/hid-input.c.pn31~	2006-01-22 
> 18:12:59.000000000 +0100
> +++ linux-2.6.15/drivers/usb/input/hid-input.c	2006-01-22 18:13:35.000000000 
> +0100
> @@ -243,7 +243,7 @@
>  	printk(" ---> ");
>  #endif
>  
> -	if (field->flags & HID_MAIN_ITEM_CONSTANT)
> +	if ((field->flags & HID_MAIN_ITEM_CONSTANT) && !(device->quirks & 
> HID_QUIRK_WRONG_CONSTANT))
>  		goto ignore;
>  
>  	switch (usage->hid & HID_USAGE_PAGE) {
> @@ -326,16 +326,21 @@
>  				break;
>  			}
>  
> -			switch (usage->hid) {
> +			if (device->quirks & HID_QUIRK_GENDESK_EXTRA_BIT)
> +				code = usage->hid & 0xfff9ffff;
> +			else
> +				code = usage->hid;
> +
> +			switch (code) {
>  
>  				/* These usage IDs map directly to the usage codes. */
>  				case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
>  				case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
>  				case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
>  					if (field->flags & HID_MAIN_ITEM_RELATIVE)
> -						map_rel(usage->hid & 0xf);
> +						map_rel(code & 0xf);
>  					else
> -						map_abs(usage->hid & 0xf);
> +						map_abs(code & 0xf);
>  					break;
>  
>  				case HID_GD_HATSWITCH:
> @@ -569,6 +574,12 @@
>  
>  	set_bit(usage->type, input->evbit);
>  
> +	if ((usage->type == EV_REL) &&
> +		(device->quirks & HID_QUIRK_BAD_LOGICAL_RANGE) && (field->logical_minimum 
> == field->logical_maximum)) {
> +		field->logical_minimum = -127;
> +		field->logical_maximum = 127;
> +	}
> +
>  	while (usage->code <= max && test_and_set_bit(usage->code, bit))
>  		usage->code = find_next_zero_bit(bit, max + 1, usage->code);
>  
> --- linux-2.6.15/drivers/usb/input/hid-core.c.pn31~	2006-01-22 
> 18:13:18.000000000 +0100
> +++ linux-2.6.15/drivers/usb/input/hid-core.c	2006-01-22 18:13:35.000000000 
> +0100
> @@ -1449,6 +1449,9 @@
>   * Alphabetically sorted blacklist by quirk type.
>   */
>  
> +#define USB_VENDOR_ID_SHUTTLE_REMOTE	0x4572
> +#define USB_DEVICE_ID_SHUTTLE_PN31	0x4572
> +
>  static const struct hid_blacklist {
>  	__u16 idVendor;
>  	__u16 idProduct;
> @@ -1585,6 +1588,8 @@
>  	{ USB_VENDOR_ID_APPLE, 0x030A, HID_QUIRK_POWERBOOK_HAS_FN },
>  	{ USB_VENDOR_ID_APPLE, 0x030B, HID_QUIRK_POWERBOOK_HAS_FN },
>  
> +	{ USB_VENDOR_ID_SHUTTLE_REMOTE, USB_DEVICE_ID_SHUTTLE_PN31, 
> HID_QUIRK_BAD_LOGICAL_RANGE | HID_QUIRK_HIDDEV | HID_QUIRK_MULTI_INPUT | 
> HID_QUIRK_WRONG_CONSTANT | HID_QUIRK_GENDESK_EXTRA_BIT },
> +
>  	{ 0, 0 }
>  };
>  
> 
> 

-- 
Vojtech Pavlik
Director SuSE Labs
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