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take care of VKD modules when changing brightness

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This commit is contained in:
marschap
2006-11-26 20:42:42 +00:00
parent 1d4d4443e8
commit 2a34abeb8e
1 changed files with 15 additions and 4 deletions
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server/drivers/MtxOrb.c
+15 -4
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@@ -744,15 +744,26 @@ MODULE_EXPORT void
MtxOrb_backlight (Driver *drvthis, int on)
{
PrivateData *p = drvthis->private_data;
unsigned char out[5] = { '\xFE', '\x99', 0 };
int promille = (on == BACKLIGHT_ON)
? p->brightness
: p->offbrightness;
/* map range [0, 1000] -> [0, 255] that the hardware understands */
out[2] = (unsigned char) ((long) promille * 255 / 1000);
if (IS_VKD_DISPLAY) {
unsigned char out[5] = { '\xFE', '\x89', 0 };
write(p->fd, out, 3);
/* map range [0, 1000] -> [0, 3] that the hardware understands */
out[2] = (unsigned char) ((long) promille * 3 / 1000);
write(p->fd, out, 3);
}
else {
unsigned char out[5] = { '\xFE', '\x99', 0 };
/* map range [0, 1000] -> [0, 255] that the hardware understands */
out[2] = (unsigned char) ((long) promille * 255 / 1000);
write(p->fd, out, 3);
}
debug(RPT_DEBUG, "MtxOrb: changed brightness to %d", out[2]);
}