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Set predefined logical touchpad sizes for several ancient Elan hw v.2

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models. This change is based on Linux driver.
Determine logical trace size. It used for calculation of touch sizes
in surface units for MT-protocol type B evdev reports.

Reviewed by:	gonzo
Approved by:	gonzo (mentor)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D10266
This commit is contained in:
wulf 2017-05-04 23:12:45 +00:00
parent 13d94d2651
commit 5f063c2780
1 changed files with 33 additions and 9 deletions
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42
sys/dev/atkbdc/psm.c
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@ -300,6 +300,8 @@ typedef struct elantechhw {
int dpmmy;
int ntracesx;
int ntracesy;
int dptracex;
int dptracey;
int issemimt;
int isclickpad;
int hascrc;
@ -6280,8 +6282,17 @@ enable_elantech(struct psm_softc *sc, enum probearg arg)
static const int ic2hw[] =
/*IC: 0 1 2 3 4 5 6 7 8 9 a b c d e f */
{ 0, 0, 2, 0, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0 };
static const int fw_sizes[][3] = {
/* FW.vers MaxX MaxY */
{ 0x020030, 1152, 768 },
{ 0x020800, 1152, 768 },
{ 0x020b00, 1152, 768 },
{ 0x040215, 900, 500 },
{ 0x040216, 819, 405 },
{ 0x040219, 900, 500 },
};
elantechhw_t elanhw;
int icversion, hwversion, dptracex, dptracey, id, resp[3], dpix, dpiy;
int icversion, hwversion, xtr, i, id, resp[3], dpix, dpiy;
KBDC kbdc = sc->kbdc;
VLOG(3, (LOG_DEBUG, "elantech: BEGIN init\n"));
@ -6332,8 +6343,8 @@ enable_elantech(struct psm_softc *sc, enum probearg arg)
return (FALSE);
}
elanhw.ntracesx = resp[1] - 1;
elanhw.ntracesy = resp[2] - 1;
elanhw.ntracesx = imax(resp[1], 3);
elanhw.ntracesy = imax(resp[2], 3);
elanhw.hastrackpoint = (resp[0] & 0x80) != 0;
/* Get the touchpad resolution */
@ -6367,24 +6378,35 @@ enable_elantech(struct psm_softc *sc, enum probearg arg)
* On HW v.3 touchpads it should be done after switching hardware
* to real resolution mode (by setting bit 3 of reg10)
*/
elanhw.dptracex = elanhw.dptracey = 64;
for (i = 0; i < nitems(fw_sizes); i++) {
if (elanhw.fwversion == fw_sizes[i][0]) {
elanhw.sizex = fw_sizes[i][1];
elanhw.sizey = fw_sizes[i][2];
goto found;
}
}
if (elantech_cmd(kbdc, hwversion, ELANTECH_FW_ID, resp) != 0) {
printf(" Failed to read touchpad size\n");
elanhw.sizex = 10000; /* Arbitrary high values to */
elanhw.sizey = 10000; /* prevent clipping in smoother */
} else if (hwversion == 2) {
dptracex = dptracey = 64;
if ((elanhw.fwversion >> 16) == 0x14 && (resp[1] & 0x10) &&
!elantech_cmd(kbdc, hwversion, ELANTECH_SAMPLE, resp)) {
dptracex = resp[1] / 2;
dptracey = resp[2] / 2;
elanhw.dptracex = resp[1] / 2;
elanhw.dptracey = resp[2] / 2;
}
elanhw.sizex = (elanhw.ntracesx - 1) * dptracex;
elanhw.sizey = (elanhw.ntracesy - 1) * dptracey;
xtr = ((elanhw.fwversion >> 8) == 0x0208) ? 1 : 2;
elanhw.sizex = (elanhw.ntracesx - xtr) * elanhw.dptracex;
elanhw.sizey = (elanhw.ntracesy - xtr) * elanhw.dptracey;
} else {
elanhw.sizex = (resp[0] & 0x0f) << 8 | resp[1];
elanhw.sizey = (resp[0] & 0xf0) << 4 | resp[2];
xtr = (elanhw.sizex % (elanhw.ntracesx - 2) == 0) ? 2 : 1;
elanhw.dptracex = elanhw.sizex / (elanhw.ntracesx - xtr);
elanhw.dptracey = elanhw.sizey / (elanhw.ntracesy - xtr);
}
found:
if (verbose >= 2) {
printf(" Model information:\n");
printf(" MaxX: %d\n", elanhw.sizex);
@ -6393,6 +6415,8 @@ enable_elantech(struct psm_softc *sc, enum probearg arg)
printf(" DpmmY: %d\n", elanhw.dpmmy);
printf(" TracesX: %d\n", elanhw.ntracesx);
printf(" TracesY: %d\n", elanhw.ntracesy);
printf(" DptraceX: %d\n", elanhw.dptracex);
printf(" DptraceY: %d\n", elanhw.dptracey);
printf(" SemiMT: %d\n", elanhw.issemimt);
printf(" Clickpad: %d\n", elanhw.isclickpad);
printf(" Trackpoint: %d\n", elanhw.hastrackpoint);