Documentation/kernel-parameters.txt | 4
drivers/input/mouse/psmouse-base.c | 69 +++++++++++---
drivers/input/mouse/psmouse.h | 22 +++-
drivers/input/mouse/synaptics.c | 172 ++++++++++++++++++++++++++++--------
drivers/input/mouse/synaptics.h | 15 ++-
drivers/input/serio/serio.c | 25 +++++
include/linux/serio.h | 3
7 files changed, 247 insertions(+), 63 deletions(-)
diff -puN Documentation/kernel-parameters.txt~p00005_synaptics-pass-through Documentation/kernel-parameters.txt
--- 25/Documentation/kernel-parameters.txt~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/Documentation/kernel-parameters.txt 2003-08-30 15:40:43.000000000 -0700
@@ -788,6 +788,10 @@ running once the system is up.
psmouse_noext [HW,MOUSE] Disable probing for PS2 mouse protocol extensions
+ psmouse_resetafter=
+ [HW,MOUSE] Try to reset Synaptics Touchpad after so many
+ bad packets (0 = never).
+
pss= [HW,OSS] Personal Sound System (ECHO ESC614)
Format: <io>,<mss_io>,<mss_irq>,<mss_dma>,<mpu_io>,<mpu_irq>
diff -puN drivers/input/mouse/psmouse-base.c~p00005_synaptics-pass-through drivers/input/mouse/psmouse-base.c
--- 25/drivers/input/mouse/psmouse-base.c~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/drivers/input/mouse/psmouse-base.c 2003-08-30 15:40:45.000000000 -0700
@@ -29,6 +29,8 @@ MODULE_PARM(psmouse_resolution, "i");
MODULE_PARM_DESC(psmouse_resolution, "Resolution, in dpi.");
MODULE_PARM(psmouse_smartscroll, "i");
MODULE_PARM_DESC(psmouse_smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
+MODULE_PARM(psmouse_resetafter, "i");
+MODULE_PARM_DESC(psmouse_resetafter, "Reset Synaptics Touchpad after so many bad packets (0 = never).");
MODULE_LICENSE("GPL");
#define PSMOUSE_LOGITECH_SMARTSCROLL 1
@@ -36,11 +38,12 @@ MODULE_LICENSE("GPL");
static int psmouse_noext;
int psmouse_resolution;
int psmouse_smartscroll = PSMOUSE_LOGITECH_SMARTSCROLL;
+unsigned int psmouse_resetafter;
static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "PS2T++", "GenPS/2", "ImPS/2", "ImExPS/2", "Synaptics"};
/*
- * psmouse_process_packet() anlyzes the PS/2 mouse packet contents and
+ * psmouse_process_packet() analyzes the PS/2 mouse packet contents and
* reports relevant events to the input module.
*/
@@ -108,6 +111,9 @@ static irqreturn_t psmouse_interrupt(str
{
struct psmouse *psmouse = serio->private;
+ if (psmouse->state == PSMOUSE_IGNORE)
+ goto out;
+
if (psmouse->acking) {
switch (data) {
case PSMOUSE_RET_ACK:
@@ -132,31 +138,46 @@ static irqreturn_t psmouse_interrupt(str
}
if (psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
- printk(KERN_WARNING "psmouse.c: Lost synchronization, throwing %d bytes away.\n", psmouse->pktcnt);
+ printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
+ psmouse->name, psmouse->phys, psmouse->pktcnt);
psmouse->pktcnt = 0;
}
psmouse->last = jiffies;
psmouse->packet[psmouse->pktcnt++] = data;
- if (psmouse->pktcnt == 3 + (psmouse->type >= PSMOUSE_GENPS)) {
- psmouse_process_packet(psmouse, regs);
- psmouse->pktcnt = 0;
- goto out;
+ if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
+ if (psmouse->pktcnt == 1)
+ goto out;
+
+ if (psmouse->pktcnt == 2) {
+ if (psmouse->packet[1] == PSMOUSE_RET_ID) {
+ psmouse->state = PSMOUSE_IGNORE;
+ serio_rescan(serio);
+ goto out;
+ }
+ if (psmouse->type == PSMOUSE_SYNAPTICS) {
+ /* neither 0xAA nor 0x00 are valid first bytes
+ * for a packet in absolute mode
+ */
+ psmouse->pktcnt = 0;
+ goto out;
+ }
+ }
}
- if (psmouse->pktcnt == 1 && psmouse->type == PSMOUSE_SYNAPTICS) {
+ if (psmouse->type == PSMOUSE_SYNAPTICS) {
/*
* The synaptics driver has its own resync logic,
* so it needs to receive all bytes one at a time.
*/
synaptics_process_byte(psmouse, regs);
- psmouse->pktcnt = 0;
goto out;
}
- if (psmouse->pktcnt == 1 && psmouse->packet[0] == PSMOUSE_RET_BAT) {
- serio_rescan(serio);
+ if (psmouse->pktcnt == 3 + (psmouse->type >= PSMOUSE_GENPS)) {
+ psmouse_process_packet(psmouse, regs);
+ psmouse->pktcnt = 0;
goto out;
}
out:
@@ -227,7 +248,7 @@ int psmouse_command(struct psmouse *psmo
for (i = 0; i < receive; i++)
param[i] = psmouse->cmdbuf[(receive - 1) - i];
- if (psmouse->cmdcnt)
+ if (psmouse->cmdcnt)
return (psmouse->cmdcnt = 0) - 1;
return 0;
@@ -450,14 +471,18 @@ static void psmouse_initialize(struct ps
*/
psmouse_command(psmouse, param, PSMOUSE_CMD_SETSTREAM);
+}
/*
- * Last, we enable the mouse so that we get reports from it.
+ * psmouse_activate() enables the mouse so that we get motion reports from it.
*/
+static void psmouse_activate(struct psmouse *psmouse)
+{
if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE))
printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", psmouse->serio->phys);
+ psmouse->state = PSMOUSE_ACTIVATED;
}
/*
@@ -478,8 +503,9 @@ static void psmouse_cleanup(struct serio
static void psmouse_disconnect(struct serio *serio)
{
struct psmouse *psmouse = serio->private;
- if (psmouse->type == PSMOUSE_SYNAPTICS)
- synaptics_disconnect(psmouse);
+
+ psmouse->state = PSMOUSE_IGNORE;
+ synaptics_disconnect(psmouse);
input_unregister_device(&psmouse->dev);
serio_close(serio);
kfree(psmouse);
@@ -494,7 +520,8 @@ static void psmouse_connect(struct serio
{
struct psmouse *psmouse;
- if ((serio->type & SERIO_TYPE) != SERIO_8042)
+ if ((serio->type & SERIO_TYPE) != SERIO_8042 &&
+ (serio->type & SERIO_TYPE) != SERIO_PS_PSTHRU)
return;
if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL)))
@@ -507,6 +534,7 @@ static void psmouse_connect(struct serio
psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
+ psmouse->state = PSMOUSE_NEW_DEVICE;
psmouse->serio = serio;
psmouse->dev.private = psmouse;
@@ -540,6 +568,10 @@ static void psmouse_connect(struct serio
printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
psmouse_initialize(psmouse);
+
+ synaptics_pt_init(psmouse);
+
+ psmouse_activate(psmouse);
}
static struct serio_dev psmouse_dev = {
@@ -568,9 +600,16 @@ static int __init psmouse_smartscroll_se
return 1;
}
+static int __init psmouse_resetafter_setup(char *str)
+{
+ get_option(&str, &psmouse_resetafter);
+ return 1;
+}
+
__setup("psmouse_noext", psmouse_noext_setup);
__setup("psmouse_resolution=", psmouse_resolution_setup);
__setup("psmouse_smartscroll=", psmouse_smartscroll_setup);
+__setup("psmouse_resetafter=", psmouse_resetafter_setup);
#endif
diff -puN drivers/input/mouse/psmouse.h~p00005_synaptics-pass-through drivers/input/mouse/psmouse.h
--- 25/drivers/input/mouse/psmouse.h~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/drivers/input/mouse/psmouse.h 2003-08-30 15:40:43.000000000 -0700
@@ -13,9 +13,15 @@
#define PSMOUSE_CMD_RESET_BAT 0x02ff
#define PSMOUSE_RET_BAT 0xaa
+#define PSMOUSE_RET_ID 0x00
#define PSMOUSE_RET_ACK 0xfa
#define PSMOUSE_RET_NAK 0xfe
+/* psmouse states */
+#define PSMOUSE_NEW_DEVICE 0
+#define PSMOUSE_ACTIVATED 1
+#define PSMOUSE_IGNORE 2
+
struct psmouse {
void *private;
struct input_dev dev;
@@ -29,6 +35,7 @@ struct psmouse {
unsigned char type;
unsigned char model;
unsigned long last;
+ unsigned char state;
char acking;
volatile char ack;
char error;
@@ -36,16 +43,17 @@ struct psmouse {
char phys[32];
};
-#define PSMOUSE_PS2 1
-#define PSMOUSE_PS2PP 2
-#define PSMOUSE_PS2TPP 3
-#define PSMOUSE_GENPS 4
-#define PSMOUSE_IMPS 5
-#define PSMOUSE_IMEX 6
-#define PSMOUSE_SYNAPTICS 7
+#define PSMOUSE_PS2 1
+#define PSMOUSE_PS2PP 2
+#define PSMOUSE_PS2TPP 3
+#define PSMOUSE_GENPS 4
+#define PSMOUSE_IMPS 5
+#define PSMOUSE_IMEX 6
+#define PSMOUSE_SYNAPTICS 7
int psmouse_command(struct psmouse *psmouse, unsigned char *param, int command);
extern int psmouse_smartscroll;
+extern unsigned int psmouse_resetafter;
#endif /* _PSMOUSE_H */
diff -puN drivers/input/mouse/synaptics.c~p00005_synaptics-pass-through drivers/input/mouse/synaptics.c
--- 25/drivers/input/mouse/synaptics.c~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/drivers/input/mouse/synaptics.c 2003-08-30 15:40:43.000000000 -0700
@@ -1,6 +1,9 @@
/*
* Synaptics TouchPad PS/2 mouse driver
*
+ * 2003 Dmitry Torokhov <dtor@mail.ru>
+ * Added support for pass-through port
+ *
* 2003 Peter Osterlund <petero2@telia.com>
* Ported to 2.5 input device infrastructure.
*
@@ -21,6 +24,7 @@
#include <linux/module.h>
#include <linux/input.h>
+#include <linux/serio.h>
#include "psmouse.h"
#include "synaptics.h"
@@ -71,7 +75,7 @@ static int synaptics_set_mode(struct psm
if (synaptics_special_cmd(psmouse, mode))
return -1;
- param[0] = 0x14;
+ param[0] = SYN_PS_SET_MODE2;
if (psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE))
return -1;
return 0;
@@ -83,7 +87,7 @@ static int synaptics_reset(struct psmous
if (psmouse_command(psmouse, r, PSMOUSE_CMD_RESET_BAT))
return -1;
- if (r[0] == 0xAA && r[1] == 0x00)
+ if (r[0] == PSMOUSE_RET_BAT && r[1] == PSMOUSE_RET_ID)
return 0;
return -1;
}
@@ -143,13 +147,6 @@ static int synaptics_identify(struct psm
return -1;
}
-static int synaptics_enable_device(struct psmouse *psmouse)
-{
- if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE))
- return -1;
- return 0;
-}
-
static void print_ident(struct synaptics_data *priv)
{
printk(KERN_INFO "Synaptics Touchpad, model: %ld\n", SYN_ID_MODEL(priv->identity));
@@ -176,6 +173,8 @@ static void print_ident(struct synaptics
printk(KERN_INFO " -> multifinger detection\n");
if (SYN_CAP_PALMDETECT(priv->capabilities))
printk(KERN_INFO " -> palm detection\n");
+ if (SYN_CAP_PASS_THROUGH(priv->capabilities))
+ printk(KERN_INFO " -> pass-through port\n");
}
}
@@ -199,9 +198,96 @@ static int query_hardware(struct psmouse
SYN_BIT_W_MODE)))
return -1;
- synaptics_enable_device(psmouse);
+ return 0;
+}
- print_ident(priv);
+/*****************************************************************************
+ * Synaptics pass-through PS/2 port support
+ ****************************************************************************/
+static int synaptics_pt_open(struct serio *port)
+{
+ return 0;
+}
+
+static void synaptics_pt_close(struct serio *port)
+{
+}
+
+static int synaptics_pt_write(struct serio *port, unsigned char c)
+{
+ struct psmouse *parent = port->driver;
+ char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
+
+ if (synaptics_special_cmd(parent, c))
+ return -1;
+ if (psmouse_command(parent, &rate_param, PSMOUSE_CMD_SETRATE))
+ return -1;
+ return 0;
+}
+
+static inline int synaptics_is_pt_packet(unsigned char *buf)
+{
+ return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
+}
+
+static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
+{
+ struct psmouse *child = ptport->private;
+
+ if (child) {
+ if (child->state == PSMOUSE_ACTIVATED) {
+ serio_interrupt(ptport, packet[1], 0, NULL);
+ serio_interrupt(ptport, packet[4], 0, NULL);
+ serio_interrupt(ptport, packet[5], 0, NULL);
+ if (child->type >= PSMOUSE_GENPS)
+ serio_interrupt(ptport, packet[2], 0, NULL);
+ } else if (child->state != PSMOUSE_IGNORE) {
+ serio_interrupt(ptport, packet[1], 0, NULL);
+ }
+ }
+}
+
+int synaptics_pt_init(struct psmouse *psmouse)
+{
+ struct synaptics_data *priv = psmouse->private;
+ struct serio *port;
+ struct psmouse *child;
+
+ if (psmouse->type != PSMOUSE_SYNAPTICS)
+ return -1;
+ if (!SYN_CAP_EXTENDED(priv->capabilities))
+ return -1;
+ if (!SYN_CAP_PASS_THROUGH(priv->capabilities))
+ return -1;
+
+ priv->ptport = port = kmalloc(sizeof(struct serio), GFP_KERNEL);
+ if (!port) {
+ printk(KERN_ERR "synaptics: not enough memory to allocate serio port\n");
+ return -1;
+ }
+
+ memset(port, 0, sizeof(struct serio));
+ port->type = SERIO_PS_PSTHRU;
+ port->name = "Synaptics pass-through";
+ port->phys = "synaptics-pt/serio0";
+ port->write = synaptics_pt_write;
+ port->open = synaptics_pt_open;
+ port->close = synaptics_pt_close;
+ port->driver = psmouse;
+
+ printk(KERN_INFO "serio: %s port at %s\n", port->name, psmouse->phys);
+ serio_register_slave_port(port);
+
+ /* adjust the touchpad to child's choice of protocol */
+ child = port->private;
+ if (child && child->type >= PSMOUSE_GENPS) {
+ if (synaptics_set_mode(psmouse, (SYN_BIT_ABSOLUTE_MODE |
+ SYN_BIT_HIGH_RATE |
+ SYN_BIT_DISABLE_GESTURE |
+ SYN_BIT_FOUR_BYTE_CLIENT |
+ SYN_BIT_W_MODE)))
+ printk(KERN_INFO "synaptics: failed to enable 4-byte guest protocol\n");
+ }
return 0;
}
@@ -232,13 +318,15 @@ int synaptics_init(struct psmouse *psmou
return -1;
memset(priv, 0, sizeof(struct synaptics_data));
- priv->inSync = 1;
+ priv->out_of_sync = 0;
if (query_hardware(psmouse)) {
printk(KERN_ERR "Unable to query/initialize Synaptics hardware.\n");
goto init_fail;
}
+ print_ident(priv);
+
/*
* The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
* which says that they should be valid regardless of the actual size of
@@ -290,20 +378,22 @@ void synaptics_disconnect(struct psmouse
{
struct synaptics_data *priv = psmouse->private;
- /* Restore touchpad to power on default state */
- synaptics_set_mode(psmouse, 0);
-
- kfree(priv);
+ if (psmouse->type == PSMOUSE_SYNAPTICS && priv) {
+ synaptics_set_mode(psmouse, 0);
+ if (priv->ptport) {
+ serio_unregister_slave_port(priv->ptport);
+ kfree(priv->ptport);
+ }
+ kfree(priv);
+ }
}
/*****************************************************************************
* Functions to interpret the absolute mode packets
****************************************************************************/
-static void synaptics_parse_hw_state(struct synaptics_data *priv, struct synaptics_hw_state *hw)
+static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
{
- unsigned char *buf = priv->proto_buf;
-
hw->x = (((buf[3] & 0x10) << 8) |
((buf[1] & 0x0f) << 8) |
buf[4]);
@@ -317,7 +407,7 @@ static void synaptics_parse_hw_state(str
((buf[3] & 0x04) >> 2));
hw->left = (buf[0] & 0x01) ? 1 : 0;
- hw->right = (buf[0] & 0x2) ? 1 : 0;
+ hw->right = (buf[0] & 0x02) ? 1 : 0;
hw->up = 0;
hw->down = 0;
hw->b0 = 0;
@@ -366,7 +456,7 @@ static void synaptics_process_packet(str
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state hw;
- synaptics_parse_hw_state(priv, &hw);
+ synaptics_parse_hw_state(psmouse->packet, priv, &hw);
if (hw.z > 0) {
int w_ok = 0;
@@ -431,35 +521,45 @@ void synaptics_process_byte(struct psmou
{
struct input_dev *dev = &psmouse->dev;
struct synaptics_data *priv = psmouse->private;
- unsigned char *pBuf = priv->proto_buf;
- unsigned char u = psmouse->packet[0];
+ unsigned char data = psmouse->packet[psmouse->pktcnt - 1];
input_regs(dev, regs);
- pBuf[priv->proto_buf_tail++] = u;
-
/* check first byte */
- if ((priv->proto_buf_tail == 1) && ((u & 0xC8) != 0x80)) {
- priv->inSync = 0;
- priv->proto_buf_tail = 0;
+ if (psmouse->pktcnt == 1 && (data & 0xC8) != 0x80) {
printk(KERN_WARNING "Synaptics driver lost sync at 1st byte\n");
+ priv->out_of_sync++;
+ psmouse->pktcnt = 0;
+ if (psmouse_resetafter > 0 && priv->out_of_sync == psmouse_resetafter) {
+ psmouse->state = PSMOUSE_IGNORE;
+ serio_rescan(psmouse->serio);
+ }
return;
}
/* check 4th byte */
- if ((priv->proto_buf_tail == 4) && ((u & 0xc8) != 0xc0)) {
- priv->inSync = 0;
- priv->proto_buf_tail = 0;
+ if (psmouse->pktcnt == 4 && (data & 0xC8) != 0xC0) {
printk(KERN_WARNING "Synaptics driver lost sync at 4th byte\n");
+ priv->out_of_sync++;
+ psmouse->pktcnt = 0;
+ if (psmouse_resetafter > 0 && priv->out_of_sync == psmouse_resetafter) {
+ psmouse->state = PSMOUSE_IGNORE;
+ serio_rescan(psmouse->serio);
+ }
return;
}
- if (priv->proto_buf_tail >= 6) { /* Full packet received */
- if (!priv->inSync) {
- priv->inSync = 1;
+ if (psmouse->pktcnt >= 6) { /* Full packet received */
+ if (priv->out_of_sync) {
+ priv->out_of_sync = 0;
printk(KERN_NOTICE "Synaptics driver resynced.\n");
}
- synaptics_process_packet(psmouse);
- priv->proto_buf_tail = 0;
+
+ if (priv->ptport && synaptics_is_pt_packet(psmouse->packet))
+ synaptics_pass_pt_packet(priv->ptport, psmouse->packet);
+ else
+ synaptics_process_packet(psmouse);
+
+ psmouse->pktcnt = 0;
}
}
diff -puN drivers/input/mouse/synaptics.h~p00005_synaptics-pass-through drivers/input/mouse/synaptics.h
--- 25/drivers/input/mouse/synaptics.h~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/drivers/input/mouse/synaptics.h 2003-08-30 15:40:43.000000000 -0700
@@ -12,6 +12,7 @@
extern void synaptics_process_byte(struct psmouse *psmouse, struct pt_regs *regs);
extern int synaptics_init(struct psmouse *psmouse);
+extern int synaptics_pt_init(struct psmouse *psmouse);
extern void synaptics_disconnect(struct psmouse *psmouse);
/* synaptics queries */
@@ -29,6 +30,7 @@ extern void synaptics_disconnect(struct
#define SYN_BIT_HIGH_RATE (1 << 6)
#define SYN_BIT_SLEEP_MODE (1 << 3)
#define SYN_BIT_DISABLE_GESTURE (1 << 2)
+#define SYN_BIT_FOUR_BYTE_CLIENT (1 << 1)
#define SYN_BIT_W_MODE (1 << 0)
/* synaptics model ID bits */
@@ -43,6 +45,7 @@ extern void synaptics_disconnect(struct
/* synaptics capability bits */
#define SYN_CAP_EXTENDED(c) ((c) & (1 << 23))
+#define SYN_CAP_PASS_THROUGH(c) ((c) & (1 << 7))
#define SYN_CAP_SLEEP(c) ((c) & (1 << 4))
#define SYN_CAP_FOUR_BUTTON(c) ((c) & (1 << 3))
#define SYN_CAP_MULTIFINGER(c) ((c) & (1 << 1))
@@ -65,6 +68,10 @@ extern void synaptics_disconnect(struct
#define SYN_ID_MINOR(i) (((i) >> 16) & 0xff)
#define SYN_ID_IS_SYNAPTICS(i) ((((i) >> 8) & 0xff) == 0x47)
+/* synaptics special commands */
+#define SYN_PS_SET_MODE2 0x14
+#define SYN_PS_CLIENT_CMD 0x28
+
/*
* A structure to describe the state of the touchpad hardware (buttons and pad)
*/
@@ -96,12 +103,10 @@ struct synaptics_data {
unsigned long int identity; /* Identification */
/* Data for normal processing */
- unsigned char proto_buf[6]; /* Buffer for Packet */
- unsigned char last_byte; /* last received byte */
- int inSync; /* Packets in sync */
- int proto_buf_tail;
-
+ unsigned int out_of_sync; /* # of packets out of sync */
int old_w; /* Previous w value */
+
+ struct serio *ptport; /* pass-through port */
};
#endif /* _SYNAPTICS_H */
diff -puN drivers/input/serio/serio.c~p00005_synaptics-pass-through drivers/input/serio/serio.c
--- 25/drivers/input/serio/serio.c~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/drivers/input/serio/serio.c 2003-08-30 15:40:43.000000000 -0700
@@ -49,7 +49,9 @@ MODULE_LICENSE("GPL");
EXPORT_SYMBOL(serio_interrupt);
EXPORT_SYMBOL(serio_register_port);
+EXPORT_SYMBOL(serio_register_slave_port);
EXPORT_SYMBOL(serio_unregister_port);
+EXPORT_SYMBOL(serio_unregister_slave_port);
EXPORT_SYMBOL(serio_register_device);
EXPORT_SYMBOL(serio_unregister_device);
EXPORT_SYMBOL(serio_open);
@@ -166,6 +168,17 @@ void serio_register_port(struct serio *s
up(&serio_sem);
}
+/*
+ * Same as serio_register_port but does not try to acquire serio_sem.
+ * Should be used when registering a serio from other input device's
+ * connect() function.
+ */
+void serio_register_slave_port(struct serio *serio)
+{
+ list_add_tail(&serio->node, &serio_list);
+ serio_find_dev(serio);
+}
+
void serio_unregister_port(struct serio *serio)
{
down(&serio_sem);
@@ -175,6 +188,18 @@ void serio_unregister_port(struct serio
up(&serio_sem);
}
+/*
+ * Same as serio_unregister_port but does not try to acquire serio_sem.
+ * Should be used when unregistering a serio from other input device's
+ * disconnect() function.
+ */
+void serio_unregister_slave_port(struct serio *serio)
+{
+ list_del_init(&serio->node);
+ if (serio->dev && serio->dev->disconnect)
+ serio->dev->disconnect(serio);
+}
+
void serio_register_device(struct serio_dev *dev)
{
struct serio *serio;
diff -puN include/linux/serio.h~p00005_synaptics-pass-through include/linux/serio.h
--- 25/include/linux/serio.h~p00005_synaptics-pass-through 2003-08-30 15:40:43.000000000 -0700
+++ 25-akpm/include/linux/serio.h 2003-08-30 15:40:43.000000000 -0700
@@ -65,7 +65,9 @@ void serio_rescan(struct serio *serio);
irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags, struct pt_regs *regs);
void serio_register_port(struct serio *serio);
+void serio_register_slave_port(struct serio *serio);
void serio_unregister_port(struct serio *serio);
+void serio_unregister_slave_port(struct serio *serio);
void serio_register_device(struct serio_dev *dev);
void serio_unregister_device(struct serio_dev *dev);
@@ -104,6 +106,7 @@ static __inline__ void serio_cleanup(str
#define SERIO_RS232 0x02000000UL
#define SERIO_HIL_MLC 0x03000000UL
#define SERIO_PC9800 0x04000000UL
+#define SERIO_PS_PSTHRU 0x05000000UL
#define SERIO_PROTO 0xFFUL
#define SERIO_MSC 0x01
_