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Input: wacom - Bamboo One 1024 pressure fix 

Bamboo One's with ID of 0x6a and 0x6b were added with correct
indication of 1024 pressure levels but the Graphire packet routine
was only looking at 9 bits.  Increased to 10 bits.

This bug caused these devices to roll over to zero pressure at half
way mark.

The other devices using this routine only support 256 or 512 range
and look to fix unused bits at zero.

Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Reported-by: Tushant Mirchandani <tushantin@gmail.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Chris Bagwell 2012-06-12 00:25:48 -07:00 committed by Dmitry Torokhov
parent b7af2bb84c
commit 6dc463511d
1 changed files with 1 additions and 1 deletions
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2
drivers/input/tablet/wacom_wac.c
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@ -248,7 +248,7 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
if (wacom->tool[0] != BTN_TOOL_MOUSE) {
input_report_abs(input, ABS_PRESSURE, data[6] | ((data[7] & 0x01) << 8));
input_report_abs(input, ABS_PRESSURE, data[6] | ((data[7] & 0x03) << 8));
input_report_key(input, BTN_TOUCH, data[1] & 0x01);
input_report_key(input, BTN_STYLUS, data[1] & 0x02);
input_report_key(input, BTN_STYLUS2, data[1] & 0x04);