PS/2 protocol is slow, and using it with pass-through port (where we
encapsulate PS/2 into PS/2) is slower yet so it takes quite a bit of time
to do full protocol discovery for device attached to a pass-through port.
However, so far we have not see anything but tackpoint or basic PS/2 device
on pass-through ports, so let's limit protocols that we probe there to
Trackpoint, IntelliMouse Explorer, IntelliMouse, and bare PS/2 protocol,
and avoid other extended protocols, such as Synaptics, ALPS, etc.
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
---
drivers/input/mouse/focaltech.c | 4 +-
drivers/input/mouse/psmouse-base.c | 575 +++++++++++++++++++------------------
2 files changed, 297 insertions(+), 282 deletions(-)
diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
index 4d5576d..d03f916 100644
--- a/drivers/input/mouse/focaltech.c
+++ b/drivers/input/mouse/focaltech.c
@@ -461,9 +461,7 @@ fail:
int focaltech_init(struct psmouse *psmouse)
{
- focaltech_reset(psmouse);
-
- return 0;
+ return -ENOSYS;
}
#endif /* CONFIG_MOUSE_PS2_FOCALTECH */
diff --git a/drivers/input/mouse/psmouse-base.c
b/drivers/input/mouse/psmouse-base.c
index ad18dab..9610017 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -119,6 +119,7 @@ struct psmouse_protocol {
enum psmouse_type type;
bool maxproto;
bool ignore_parity; /* Protocol should ignore parity errors from KBC */
+ bool try_passthru; /* Try protocol also on passthrough ports */
const char *name;
const char *alias;
int (*detect)(struct psmouse *, bool);
@@ -699,284 +700,6 @@ static int cortron_detect(struct psmouse *psmouse, bool
set_properties)
return 0;
}
-/*
- * Apply default settings to the psmouse structure. Most of them will
- * be overridden by individual protocol initialization routines.
- */
-
-static void psmouse_apply_defaults(struct psmouse *psmouse)
-{
- struct input_dev *input_dev = psmouse->dev;
-
- memset(input_dev->evbit, 0, sizeof(input_dev->evbit));
- memset(input_dev->keybit, 0, sizeof(input_dev->keybit));
- memset(input_dev->relbit, 0, sizeof(input_dev->relbit));
- memset(input_dev->absbit, 0, sizeof(input_dev->absbit));
- memset(input_dev->mscbit, 0, sizeof(input_dev->mscbit));
-
- __set_bit(EV_KEY, input_dev->evbit);
- __set_bit(EV_REL, input_dev->evbit);
-
- __set_bit(BTN_LEFT, input_dev->keybit);
- __set_bit(BTN_RIGHT, input_dev->keybit);
-
- __set_bit(REL_X, input_dev->relbit);
- __set_bit(REL_Y, input_dev->relbit);
-
- __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
-
- psmouse->set_rate = psmouse_set_rate;
- psmouse->set_resolution = psmouse_set_resolution;
- psmouse->set_scale = psmouse_set_scale;
- psmouse->poll = psmouse_poll;
- psmouse->protocol_handler = psmouse_process_byte;
- psmouse->pktsize = 3;
- psmouse->reconnect = NULL;
- psmouse->disconnect = NULL;
- psmouse->cleanup = NULL;
- psmouse->pt_activate = NULL;
- psmouse->pt_deactivate = NULL;
-}
-
-/*
- * Apply default settings to the psmouse structure and call specified
- * protocol detection or initialization routine.
- */
-static int psmouse_do_detect(int (*detect)(struct psmouse *psmouse,
- bool set_properties),
- struct psmouse *psmouse, bool set_properties)
-{
- if (set_properties)
- psmouse_apply_defaults(psmouse);
-
- return detect(psmouse, set_properties);
-}
-
-/*
- * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
- * the mouse may have.
- */
-
-static int psmouse_extensions(struct psmouse *psmouse,
- unsigned int max_proto, bool set_properties)
-{
- bool synaptics_hardware = false;
-
-/* Always check for focaltech, this is safe as it uses pnp-id matching */
- if (psmouse_do_detect(focaltech_detect, psmouse, set_properties) == 0) {
- if (max_proto > PSMOUSE_IMEX) {
- if (!set_properties || focaltech_init(psmouse) == 0) {
- if (IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH))
- return PSMOUSE_FOCALTECH;
- /*
- * Note that we need to also restrict
- * psmouse_max_proto so that
psmouse_initialize()
- * does not try to reset rate and resolution,
- * because even that upsets the device.
- */
- psmouse_max_proto = PSMOUSE_PS2;
- return PSMOUSE_PS2;
- }
- }
- }
-
-/*
- * We always check for lifebook because it does not disturb mouse
- * (it only checks DMI information).
- */
- if (psmouse_do_detect(lifebook_detect, psmouse, set_properties) == 0) {
- if (max_proto > PSMOUSE_IMEX) {
- if (!set_properties || lifebook_init(psmouse) == 0)
- return PSMOUSE_LIFEBOOK;
- }
- }
-
- if (psmouse_do_detect(vmmouse_detect, psmouse, set_properties) == 0) {
- if (max_proto > PSMOUSE_IMEX) {
- if (!set_properties || vmmouse_init(psmouse) == 0)
- return PSMOUSE_VMMOUSE;
- }
- }
-
-/*
- * Try Kensington ThinkingMouse (we try first, because synaptics probe
- * upsets the thinkingmouse).
- */
-
- if (max_proto > PSMOUSE_IMEX &&
- psmouse_do_detect(thinking_detect, psmouse, set_properties) == 0) {
- return PSMOUSE_THINKPS;
- }
-
-/*
- * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol
- * support is disabled in config - we need to know if it is synaptics so we
- * can reset it properly after probing for intellimouse.
- */
- if (max_proto > PSMOUSE_PS2 &&
- psmouse_do_detect(synaptics_detect, psmouse, set_properties) == 0) {
- synaptics_hardware = true;
-
- if (max_proto > PSMOUSE_IMEX) {
-/*
- * Try activating protocol, but check if support is enabled first, since
- * we try detecting Synaptics even when protocol is disabled.
- */
- if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) &&
- (!set_properties || synaptics_init(psmouse) == 0)) {
- return PSMOUSE_SYNAPTICS;
- }
-
-/*
- * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
- * Unfortunately Logitech/Genius probes confuse some firmware versions so
- * we'll have to skip them.
- */
- max_proto = PSMOUSE_IMEX;
- }
-/*
- * Make sure that touchpad is in relative mode, gestures (taps) are enabled
- */
- synaptics_reset(psmouse);
- }
-
-/*
- * Try Cypress Trackpad.
- * Must try it before Finger Sensing Pad because Finger Sensing Pad probe
- * upsets some modules of Cypress Trackpads.
- */
- if (max_proto > PSMOUSE_IMEX &&
- cypress_detect(psmouse, set_properties) == 0) {
- if (IS_ENABLED(CONFIG_MOUSE_PS2_CYPRESS)) {
- if (cypress_init(psmouse) == 0)
- return PSMOUSE_CYPRESS;
-
- /*
- * Finger Sensing Pad probe upsets some modules of
- * Cypress Trackpad, must avoid Finger Sensing Pad
- * probe if Cypress Trackpad device detected.
- */
- return PSMOUSE_PS2;
- }
-
- max_proto = PSMOUSE_IMEX;
- }
-
-/*
- * Try ALPS TouchPad
- */
- if (max_proto > PSMOUSE_IMEX) {
- ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
- if (psmouse_do_detect(alps_detect,
- psmouse, set_properties) == 0) {
- if (!set_properties || alps_init(psmouse) == 0)
- return PSMOUSE_ALPS;
-/*
- * Init failed, try basic relative protocols
- */
- max_proto = PSMOUSE_IMEX;
- }
- }
-
-/*
- * Try OLPC HGPK touchpad.
- */
- if (max_proto > PSMOUSE_IMEX &&
- psmouse_do_detect(hgpk_detect, psmouse, set_properties) == 0) {
- if (!set_properties || hgpk_init(psmouse) == 0)
- return PSMOUSE_HGPK;
-/*
- * Init failed, try basic relative protocols
- */
- max_proto = PSMOUSE_IMEX;
- }
-
-/*
- * Try Elantech touchpad.
- */
- if (max_proto > PSMOUSE_IMEX &&
- psmouse_do_detect(elantech_detect, psmouse, set_properties) == 0) {
- if (!set_properties || elantech_init(psmouse) == 0)
- return PSMOUSE_ELANTECH;
-/*
- * Init failed, try basic relative protocols
- */
- max_proto = PSMOUSE_IMEX;
- }
-
- if (max_proto > PSMOUSE_IMEX) {
- if (psmouse_do_detect(genius_detect,
- psmouse, set_properties) == 0)
- return PSMOUSE_GENPS;
-
- if (psmouse_do_detect(ps2pp_init,
- psmouse, set_properties) == 0)
- return PSMOUSE_PS2PP;
-
- if (psmouse_do_detect(trackpoint_detect,
- psmouse, set_properties) == 0)
- return PSMOUSE_TRACKPOINT;
-
- if (psmouse_do_detect(touchkit_ps2_detect,
- psmouse, set_properties) == 0)
- return PSMOUSE_TOUCHKIT_PS2;
- }
-
-/*
- * Try Finger Sensing Pad. We do it here because its probe upsets
- * Trackpoint devices (causing TP_READ_ID command to time out).
- */
- if (max_proto > PSMOUSE_IMEX) {
- if (psmouse_do_detect(fsp_detect,
- psmouse, set_properties) == 0) {
- if (!set_properties || fsp_init(psmouse) == 0)
- return PSMOUSE_FSP;
-/*
- * Init failed, try basic relative protocols
- */
- max_proto = PSMOUSE_IMEX;
- }
- }
-
-/*
- * Reset to defaults in case the device got confused by extended
- * protocol probes. Note that we follow up with full reset because
- * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
- */
- ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
- psmouse_reset(psmouse);
-
- if (max_proto >= PSMOUSE_IMEX &&
- psmouse_do_detect(im_explorer_detect,
- psmouse, set_properties) == 0) {
- return PSMOUSE_IMEX;
- }
-
- if (max_proto >= PSMOUSE_IMPS &&
- psmouse_do_detect(intellimouse_detect,
- psmouse, set_properties) == 0) {
- return PSMOUSE_IMPS;
- }
-
-/*
- * Okay, all failed, we have a standard mouse here. The number of the buttons
- * is still a question, though. We assume 3.
- */
- psmouse_do_detect(ps2bare_detect, psmouse, set_properties);
-
- if (synaptics_hardware) {
-/*
- * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
- * We need to reset the touchpad because if there is a track point on the
- * pass through port it could get disabled while probing for protocol
- * extensions.
- */
- psmouse_reset(psmouse);
- }
-
- return PSMOUSE_PS2;
-}
-
static const struct psmouse_protocol psmouse_protocols[] = {
{
.type = PSMOUSE_PS2,
@@ -985,6 +708,7 @@ static const struct psmouse_protocol psmouse_protocols[] = {
.maxproto = true,
.ignore_parity = true,
.detect = ps2bare_detect,
+ .try_passthru = true,
},
#ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
{
@@ -1022,6 +746,7 @@ static const struct psmouse_protocol psmouse_protocols[] =
{
.maxproto = true,
.ignore_parity = true,
.detect = intellimouse_detect,
+ .try_passthru = true,
},
{
.type = PSMOUSE_IMEX,
@@ -1030,6 +755,7 @@ static const struct psmouse_protocol psmouse_protocols[] =
{
.maxproto = true,
.ignore_parity = true,
.detect = im_explorer_detect,
+ .try_passthru = true,
},
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
{
@@ -1061,6 +787,7 @@ static const struct psmouse_protocol psmouse_protocols[] =
{
.type = PSMOUSE_LIFEBOOK,
.name = "LBPS/2",
.alias = "lifebook",
+ .detect = lifebook_detect,
.init = lifebook_init,
},
#endif
@@ -1070,6 +797,7 @@ static const struct psmouse_protocol psmouse_protocols[] =
{
.name = "TPPS/2",
.alias = "trackpoint",
.detect = trackpoint_detect,
+ .try_passthru = true,
},
#endif
#ifdef CONFIG_MOUSE_PS2_TOUCHKIT
@@ -1138,7 +866,7 @@ static const struct psmouse_protocol psmouse_protocols[] =
{
},
};
-static const struct psmouse_protocol *psmouse_protocol_by_type(enum
psmouse_type type)
+static const struct psmouse_protocol *__psmouse_protocol_by_type(enum
psmouse_type type)
{
int i;
@@ -1146,6 +874,17 @@ static const struct psmouse_protocol
*psmouse_protocol_by_type(enum psmouse_type
if (psmouse_protocols[i].type == type)
return &psmouse_protocols[i];
+ return NULL;
+}
+
+static const struct psmouse_protocol *psmouse_protocol_by_type(enum
psmouse_type type)
+{
+ const struct psmouse_protocol *proto;
+
+ proto = __psmouse_protocol_by_type(type);
+ if (proto)
+ return proto;
+
WARN_ON(1);
return &psmouse_protocols[0];
}
@@ -1166,6 +905,284 @@ static const struct psmouse_protocol
*psmouse_protocol_by_name(const char *name,
return NULL;
}
+/*
+ * Apply default settings to the psmouse structure. Most of them will
+ * be overridden by individual protocol initialization routines.
+ */
+
+static void psmouse_apply_defaults(struct psmouse *psmouse)
+{
+ struct input_dev *input_dev = psmouse->dev;
+
+ memset(input_dev->evbit, 0, sizeof(input_dev->evbit));
+ memset(input_dev->keybit, 0, sizeof(input_dev->keybit));
+ memset(input_dev->relbit, 0, sizeof(input_dev->relbit));
+ memset(input_dev->absbit, 0, sizeof(input_dev->absbit));
+ memset(input_dev->mscbit, 0, sizeof(input_dev->mscbit));
+
+ __set_bit(EV_KEY, input_dev->evbit);
+ __set_bit(EV_REL, input_dev->evbit);
+
+ __set_bit(BTN_LEFT, input_dev->keybit);
+ __set_bit(BTN_RIGHT, input_dev->keybit);
+
+ __set_bit(REL_X, input_dev->relbit);
+ __set_bit(REL_Y, input_dev->relbit);
+
+ __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
+
+ psmouse->set_rate = psmouse_set_rate;
+ psmouse->set_resolution = psmouse_set_resolution;
+ psmouse->set_scale = psmouse_set_scale;
+ psmouse->poll = psmouse_poll;
+ psmouse->protocol_handler = psmouse_process_byte;
+ psmouse->pktsize = 3;
+ psmouse->reconnect = NULL;
+ psmouse->disconnect = NULL;
+ psmouse->cleanup = NULL;
+ psmouse->pt_activate = NULL;
+ psmouse->pt_deactivate = NULL;
+}
+
+static bool psmouse_try_protocol(struct psmouse *psmouse,
+ enum psmouse_type type,
+ unsigned int *max_proto,
+ bool set_properties, bool do_init)
+{
+ const struct psmouse_protocol *proto;
+
+ proto = __psmouse_protocol_by_type(type);
+ if (!proto)
+ return false;
+
+ if (psmouse->ps2dev.serio->id.type == SERIO_PS_PSTHRU &&
+ !proto->try_passthru) {
+ return false;
+ }
+
+ if (set_properties)
+ psmouse_apply_defaults(psmouse);
+
+ if (proto->detect(psmouse, set_properties) != 0)
+ return false;
+
+ if (set_properties && do_init && proto->init) {
+ if (proto->init(psmouse) != 0) {
+ /*
+ * We detected device, but init failed. Adjust
+ * max_proto so we only try standard protocols.
+ */
+ if (*max_proto > PSMOUSE_IMEX)
+ *max_proto = PSMOUSE_IMEX;
+
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/*
+ * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
+ * the mouse may have.
+ */
+
+static int psmouse_extensions(struct psmouse *psmouse,
+ unsigned int max_proto, bool set_properties)
+{
+ bool synaptics_hardware = false;
+
+ /*
+ * Always check for focaltech, this is safe as it uses pnp-id
+ * matching
+ */
+ if (psmouse_try_protocol(psmouse, PSMOUSE_FOCALTECH,
+ &max_proto, set_properties, false)) {
+ if (max_proto > PSMOUSE_IMEX) {
+ if (IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH) &&
+ (!set_properties || focaltech_init(psmouse) == 0)) {
+ return PSMOUSE_FOCALTECH;
+ }
+ }
+
+ /*
+ * Restrict psmouse_max_proto so that psmouse_initialize()
+ * does not try to reset rate and resolution, because even
+ * that upsets the device.
+ * This also causes us to basically fall through to basic
+ * protocol detection, where we fully reset the mouse,
+ * and set it up as bare PS/2 protocol device.
+ */
+ psmouse_max_proto = PSMOUSE_PS2;
+ }
+
+ /*
+ * We always check for lifebook because it does not disturb mouse
+ * (it only checks DMI information).
+ */
+ if (psmouse_try_protocol(psmouse, PSMOUSE_LIFEBOOK, &max_proto,
+ set_properties, max_proto > PSMOUSE_IMEX))
+ return PSMOUSE_LIFEBOOK;
+
+ if (psmouse_try_protocol(psmouse, PSMOUSE_VMMOUSE, &max_proto,
+ set_properties, max_proto > PSMOUSE_IMEX))
+ return PSMOUSE_VMMOUSE;
+
+ /*
+ * Try Kensington ThinkingMouse (we try first, because Synaptics
+ * probe upsets the thinkingmouse).
+ */
+ if (max_proto > PSMOUSE_IMEX &&
+ psmouse_try_protocol(psmouse, PSMOUSE_THINKPS, &max_proto,
+ set_properties, true)) {
+ return PSMOUSE_THINKPS;
+ }
+
+ /*
+ * Try Synaptics TouchPad. Note that probing is done even if
+ * Synaptics protocol support is disabled in config - we need to
+ * know if it is Synaptics so we can reset it properly after
+ * probing for IntelliMouse.
+ */
+ if (max_proto > PSMOUSE_PS2 &&
+ psmouse_try_protocol(psmouse, PSMOUSE_SYNAPTICS, &max_proto,
+ set_properties, false)) {
+ synaptics_hardware = true;
+
+ if (max_proto > PSMOUSE_IMEX) {
+ /*
+ * Try activating protocol, but check if support is
+ * enabled first, since we try detecting Synaptics
+ * even when protocol is disabled.
+ */
+ if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) &&
+ (!set_properties || synaptics_init(psmouse) == 0)) {
+ return PSMOUSE_SYNAPTICS;
+ }
+
+ /*
+ * Some Synaptics touchpads can emulate extended
+ * protocols (like IMPS/2). Unfortunately
+ * Logitech/Genius probes confuse some firmware
+ * versions so we'll have to skip them.
+ */
+ max_proto = PSMOUSE_IMEX;
+ }
+
+ /*
+ * Make sure that touchpad is in relative mode, gestures
+ * (taps) are enabled.
+ */
+ synaptics_reset(psmouse);
+ }
+
+ /*
+ * Try Cypress Trackpad. Must try it before Finger Sensing Pad
+ * because Finger Sensing Pad probe upsets some modules of Cypress
+ * Trackpads.
+ */
+ if (max_proto > PSMOUSE_IMEX &&
+ psmouse_try_protocol(psmouse, PSMOUSE_CYPRESS, &max_proto,
+ set_properties, true)) {
+ return PSMOUSE_CYPRESS;
+ }
+
+ /*
+ * Try ALPS TouchPad
+ */
+ if (max_proto > PSMOUSE_IMEX) {
+ ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
+ if (psmouse_try_protocol(psmouse, PSMOUSE_ALPS,
+ &max_proto, set_properties, true))
+ return PSMOUSE_ALPS;
+ }
+
+ /*
+ * Try OLPC HGPK touchpad.
+ */
+ if (max_proto > PSMOUSE_IMEX &&
+ psmouse_try_protocol(psmouse, PSMOUSE_HGPK, &max_proto,
+ set_properties, true)) {
+ return PSMOUSE_HGPK;
+ }
+
+ /*
+ * Try Elantech touchpad.
+ */
+ if (max_proto > PSMOUSE_IMEX &&
+ psmouse_try_protocol(psmouse, PSMOUSE_ELANTECH,
+ &max_proto, set_properties, true)) {
+ return PSMOUSE_ELANTECH;
+ }
+
+ if (max_proto > PSMOUSE_IMEX) {
+ if (psmouse_try_protocol(psmouse, PSMOUSE_GENPS,
+ &max_proto, set_properties, true))
+ return PSMOUSE_GENPS;
+
+ if (psmouse_try_protocol(psmouse, PSMOUSE_PS2PP,
+ &max_proto, set_properties, true))
+ return PSMOUSE_PS2PP;
+
+ if (psmouse_try_protocol(psmouse, PSMOUSE_TRACKPOINT,
+ &max_proto, set_properties, true))
+ return PSMOUSE_TRACKPOINT;
+
+ if (psmouse_try_protocol(psmouse, PSMOUSE_TOUCHKIT_PS2,
+ &max_proto, set_properties, true))
+ return PSMOUSE_TOUCHKIT_PS2;
+ }
+
+ /*
+ * Try Finger Sensing Pad. We do it here because its probe upsets
+ * Trackpoint devices (causing TP_READ_ID command to time out).
+ */
+ if (max_proto > PSMOUSE_IMEX &&
+ psmouse_try_protocol(psmouse, PSMOUSE_FSP,
+ &max_proto, set_properties, true)) {
+ return PSMOUSE_FSP;
+ }
+
+ /*
+ * Reset to defaults in case the device got confused by extended
+ * protocol probes. Note that we follow up with full reset because
+ * some mice put themselves to sleep when they see
+ * PSMOUSE_RESET_DIS.
+ */
+ ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
+ psmouse_reset(psmouse);
+
+ if (max_proto >= PSMOUSE_IMEX &&
+ psmouse_try_protocol(psmouse, PSMOUSE_IMEX,
+ &max_proto, set_properties, true)) {
+ return PSMOUSE_IMEX;
+ }
+
+ if (max_proto >= PSMOUSE_IMPS &&
+ psmouse_try_protocol(psmouse, PSMOUSE_IMPS,
+ &max_proto, set_properties, true)) {
+ return PSMOUSE_IMPS;
+ }
+
+ /*
+ * Okay, all failed, we have a standard mouse here. The number of
+ * the buttons is still a question, though. We assume 3.
+ */
+ psmouse_try_protocol(psmouse, PSMOUSE_PS2,
+ &max_proto, set_properties, true);
+
+ if (synaptics_hardware) {
+ /*
+ * We detected Synaptics hardware but it did not respond to
+ * IMPS/2 probes. We need to reset the touchpad because if
+ * there is a track point on the pass through port it could
+ * get disabled while probing for protocol extensions.
+ */
+ psmouse_reset(psmouse);
+ }
+
+ return PSMOUSE_PS2;
+}
/*
* psmouse_probe() probes for a PS/2 mouse.
--
2.6.0.rc2.230.g3dd15c0
--
Dmitry
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