From: Christophe TORDEUX <[email protected]> Apply the following change to the Sentelic touchpad driver: report only the position of the first finger as absolute non-MT coordinates, instead of reporting both fingers alternatively. Actual MT events are unaffected.
Signed-off-by: Christophe TORDEUX <[email protected]> ---- This is a much simpler version of my patch. Basically, it makes little sense to report both fingers alternatively, as long as it's non-MT events. With this approach, storing coordinates of the previously reported touch is not necessary. This patch is against kernel version 3.7. Works with a touchpad version STL3888_C0, very probably works on all later version, and very probably does not impact any earlier version. This patch has two effects: 1) fix horizontal and improve vertical scrolling, though maybe in a coincidental way and 2) work towards making the non-MT absolute events a purely legacy single finger fallback mode, without breaking anything. diff -uprN -X vanilla/linux-3.7-rc8/Documentation/dontdiff vanilla/linux-3.7/drivers/input/mouse/sentelic.c linux-3.7/drivers/input/mouse/sentelic.c --- vanilla/linux-3.7/drivers/input/mouse/sentelic.c 2012-12-15 13:51:58.768136524 +0100 +++ linux-3.7/drivers/input/mouse/sentelic.c 2012-12-19 23:26:49.289517251 +0100 @@ -791,7 +791,7 @@ static psmouse_ret_t fsp_process_byte(st fsp_set_slot(dev, 0, fgrs > 0, abs_x, abs_y); fsp_set_slot(dev, 1, false, 0, 0); } - if (fgrs > 0) { + if (fgrs ==1 || (fgrs == 2 && !(packet[0] & FSP_PB0_MFMC_FGR2))) { input_report_abs(dev, ABS_X, abs_x); input_report_abs(dev, ABS_Y, abs_y); }
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