diff options
| -rw-r--r-- | drivers/input/mouse/synaptics.c | 36 | ||||
| -rw-r--r-- | drivers/input/mouse/synaptics.h | 2 |
2 files changed, 32 insertions, 6 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index a79bc362dde..2e300a46055 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -294,7 +294,29 @@ static int synaptics_pt_write(struct serio *serio, unsigned char c) return 0; } -static inline int synaptics_is_pt_packet(unsigned char *buf) +static int synaptics_pt_start(struct serio *serio) +{ + struct psmouse *parent = serio_get_drvdata(serio->parent); + struct synaptics_data *priv = parent->private; + + serio_pause_rx(parent->ps2dev.serio); + priv->pt_port = serio; + serio_continue_rx(parent->ps2dev.serio); + + return 0; +} + +static void synaptics_pt_stop(struct serio *serio) +{ + struct psmouse *parent = serio_get_drvdata(serio->parent); + struct synaptics_data *priv = parent->private; + + serio_pause_rx(parent->ps2dev.serio); + priv->pt_port = NULL; + serio_continue_rx(parent->ps2dev.serio); +} + +static int synaptics_is_pt_packet(unsigned char *buf) { return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4; } @@ -315,9 +337,8 @@ static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet static void synaptics_pt_activate(struct psmouse *psmouse) { - struct serio *ptport = psmouse->ps2dev.serio->child; - struct psmouse *child = serio_get_drvdata(ptport); struct synaptics_data *priv = psmouse->private; + struct psmouse *child = serio_get_drvdata(priv->pt_port); /* adjust the touchpad to child's choice of protocol */ if (child) { @@ -345,6 +366,8 @@ static void synaptics_pt_create(struct psmouse *psmouse) strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name)); serio->write = synaptics_pt_write; + serio->start = synaptics_pt_start; + serio->stop = synaptics_pt_stop; serio->parent = psmouse->ps2dev.serio; psmouse->pt_activate = synaptics_pt_activate; @@ -578,9 +601,10 @@ static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse) if (unlikely(priv->pkt_type == SYN_NEWABS)) priv->pkt_type = synaptics_detect_pkt_type(psmouse); - if (SYN_CAP_PASS_THROUGH(priv->capabilities) && synaptics_is_pt_packet(psmouse->packet)) { - if (psmouse->ps2dev.serio->child) - synaptics_pass_pt_packet(psmouse->ps2dev.serio->child, psmouse->packet); + if (SYN_CAP_PASS_THROUGH(priv->capabilities) && + synaptics_is_pt_packet(psmouse->packet)) { + if (priv->pt_port) + synaptics_pass_pt_packet(priv->pt_port, psmouse->packet); } else synaptics_process_packet(psmouse); diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h index b6aa7d20d8a..613a3652f98 100644 --- a/drivers/input/mouse/synaptics.h +++ b/drivers/input/mouse/synaptics.h @@ -110,6 +110,8 @@ struct synaptics_data { unsigned char pkt_type; /* packet type - old, new, etc */ unsigned char mode; /* current mode byte */ int scroll; + + struct serio *pt_port; /* Pass-through serio port */ }; void synaptics_module_init(void); |