diff options
Diffstat (limited to 'drivers/input/mouse/psmouse-base.c')
-rw-r--r-- | drivers/input/mouse/psmouse-base.c | 104 |
1 files changed, 61 insertions, 43 deletions
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index d8c0c8d6992c..979c50215282 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -110,6 +110,7 @@ static struct workqueue_struct *kpsmoused_wq; struct psmouse_protocol { enum psmouse_type type; bool maxproto; + bool ignore_parity; /* Protocol should ignore parity errors from KBC */ const char *name; const char *alias; int (*detect)(struct psmouse *, bool); @@ -146,18 +147,18 @@ static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) if (psmouse->type == PSMOUSE_IMEX) { switch (packet[3] & 0xC0) { - case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ - input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); - break; - case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ - input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); - break; - case 0x00: - case 0xC0: - input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); - input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); - input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); - break; + case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ + input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); + break; + case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ + input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); + break; + case 0x00: + case 0xC0: + input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); + input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); + input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); + break; } } @@ -246,31 +247,31 @@ static int psmouse_handle_byte(struct psmouse *psmouse) psmouse_ret_t rc = psmouse->protocol_handler(psmouse); switch (rc) { - case PSMOUSE_BAD_DATA: - if (psmouse->state == PSMOUSE_ACTIVATED) { - printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", - psmouse->name, psmouse->phys, psmouse->pktcnt); - if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { - __psmouse_set_state(psmouse, PSMOUSE_IGNORE); - printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); - serio_reconnect(psmouse->ps2dev.serio); - return -1; - } - } - psmouse->pktcnt = 0; - break; - - case PSMOUSE_FULL_PACKET: - psmouse->pktcnt = 0; - if (psmouse->out_of_sync_cnt) { - psmouse->out_of_sync_cnt = 0; - printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", - psmouse->name, psmouse->phys); + case PSMOUSE_BAD_DATA: + if (psmouse->state == PSMOUSE_ACTIVATED) { + printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", + psmouse->name, psmouse->phys, psmouse->pktcnt); + if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { + __psmouse_set_state(psmouse, PSMOUSE_IGNORE); + printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); + serio_reconnect(psmouse->ps2dev.serio); + return -1; } - break; + } + psmouse->pktcnt = 0; + break; + + case PSMOUSE_FULL_PACKET: + psmouse->pktcnt = 0; + if (psmouse->out_of_sync_cnt) { + psmouse->out_of_sync_cnt = 0; + printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", + psmouse->name, psmouse->phys); + } + break; - case PSMOUSE_GOOD_DATA: - break; + case PSMOUSE_GOOD_DATA: + break; } return 0; } @@ -288,7 +289,9 @@ static irqreturn_t psmouse_interrupt(struct serio *serio, if (psmouse->state == PSMOUSE_IGNORE) goto out; - if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { + if (unlikely((flags & SERIO_TIMEOUT) || + ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) { + if (psmouse->state == PSMOUSE_ACTIVATED) printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", flags & SERIO_TIMEOUT ? " timeout" : "", @@ -759,6 +762,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .name = "PS/2", .alias = "bare", .maxproto = true, + .ignore_parity = true, .detect = ps2bare_detect, }, #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP @@ -786,6 +790,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .name = "ImPS/2", .alias = "imps", .maxproto = true, + .ignore_parity = true, .detect = intellimouse_detect, }, { @@ -793,6 +798,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .name = "ImExPS/2", .alias = "exps", .maxproto = true, + .ignore_parity = true, .detect = im_explorer_detect, }, #ifdef CONFIG_MOUSE_PS2_SYNAPTICS @@ -1222,6 +1228,7 @@ static void psmouse_disconnect(struct serio *serio) static int psmouse_switch_protocol(struct psmouse *psmouse, const struct psmouse_protocol *proto) { + const struct psmouse_protocol *selected_proto; struct input_dev *input_dev = psmouse->dev; input_dev->dev.parent = &psmouse->ps2dev.serio->dev; @@ -1238,16 +1245,21 @@ static int psmouse_switch_protocol(struct psmouse *psmouse, psmouse->pktsize = 3; if (proto && (proto->detect || proto->init)) { - if (proto->detect && proto->detect(psmouse, 1) < 0) + if (proto->detect && proto->detect(psmouse, true) < 0) return -1; if (proto->init && proto->init(psmouse) < 0) return -1; psmouse->type = proto->type; - } else + selected_proto = proto; + } else { psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, true); + selected_proto = psmouse_protocol_by_type(psmouse->type); + } + + psmouse->ignore_parity = selected_proto->ignore_parity; /* * If mouse's packet size is 3 there is no point in polling the @@ -1267,7 +1279,7 @@ static int psmouse_switch_protocol(struct psmouse *psmouse, psmouse->resync_time = 0; snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", - psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name); + selected_proto->name, psmouse->vendor, psmouse->name); input_dev->name = psmouse->devname; input_dev->phys = psmouse->phys; @@ -1382,6 +1394,7 @@ static int psmouse_reconnect(struct serio *serio) struct psmouse *psmouse = serio_get_drvdata(serio); struct psmouse *parent = NULL; struct serio_driver *drv = serio->drv; + unsigned char type; int rc = -1; if (!drv || !psmouse) { @@ -1401,10 +1414,15 @@ static int psmouse_reconnect(struct serio *serio) if (psmouse->reconnect) { if (psmouse->reconnect(psmouse)) goto out; - } else if (psmouse_probe(psmouse) < 0 || - psmouse->type != psmouse_extensions(psmouse, - psmouse_max_proto, false)) { - goto out; + } else { + psmouse_reset(psmouse); + + if (psmouse_probe(psmouse) < 0) + goto out; + + type = psmouse_extensions(psmouse, psmouse_max_proto, false); + if (psmouse->type != type) + goto out; } /* ok, the device type (and capabilities) match the old one, |