#include <linux/serio.h>
#include <linux/init.h>
#include <linux/libps2.h>
+#include <linux/mutex.h>
+
#include "psmouse.h"
#include "synaptics.h"
#include "logips2pp.h"
#include "alps.h"
+#include "lifebook.h"
+#include "trackpoint.h"
#define DRIVER_DESC "PS/2 mouse driver"
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
-static unsigned int psmouse_max_proto = -1U;
+static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
static int psmouse_set_maxproto(const char *val, struct kernel_param *kp);
static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp);
-static char *psmouse_proto_abbrev[] = { NULL, "bare", NULL, NULL, NULL, "imps", "exps", NULL, NULL, NULL };
#define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
#define param_set_proto_abbrev psmouse_set_maxproto
#define param_get_proto_abbrev psmouse_get_maxproto
module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
-static unsigned int psmouse_resetafter;
+static unsigned int psmouse_resetafter = 5;
module_param_named(resetafter, psmouse_resetafter, uint, 0644);
MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
-PSMOUSE_DEFINE_ATTR(rate);
-PSMOUSE_DEFINE_ATTR(resolution);
-PSMOUSE_DEFINE_ATTR(resetafter);
+static unsigned int psmouse_resync_time;
+module_param_named(resync_time, psmouse_resync_time, uint, 0644);
+MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
+
+PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO,
+ NULL,
+ psmouse_attr_show_protocol, psmouse_attr_set_protocol);
+PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
+ (void *) offsetof(struct psmouse, rate),
+ psmouse_show_int_attr, psmouse_attr_set_rate);
+PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
+ (void *) offsetof(struct psmouse, resolution),
+ psmouse_show_int_attr, psmouse_attr_set_resolution);
+PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
+ (void *) offsetof(struct psmouse, resetafter),
+ psmouse_show_int_attr, psmouse_set_int_attr);
+PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO,
+ (void *) offsetof(struct psmouse, resync_time),
+ psmouse_show_int_attr, psmouse_set_int_attr);
+
+static struct attribute *psmouse_attributes[] = {
+ &psmouse_attr_protocol.dattr.attr,
+ &psmouse_attr_rate.dattr.attr,
+ &psmouse_attr_resolution.dattr.attr,
+ &psmouse_attr_resetafter.dattr.attr,
+ &psmouse_attr_resync_time.dattr.attr,
+ NULL
+};
+
+static struct attribute_group psmouse_attribute_group = {
+ .attrs = psmouse_attributes,
+};
__obsolete_setup("psmouse_noext");
__obsolete_setup("psmouse_resolution=");
__obsolete_setup("psmouse_resetafter=");
__obsolete_setup("psmouse_rate=");
-static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "ThinkPS/2", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2", "AlpsPS/2" };
+/*
+ * psmouse_mutex protects all operations changing state of mouse
+ * (connecting, disconnecting, changing rate or resolution via
+ * sysfs). We could use a per-device semaphore but since there
+ * rarely more than one PS/2 mouse connected and since semaphore
+ * is taken in "slow" paths it is not worth it.
+ */
+static DEFINE_MUTEX(psmouse_mutex);
+
+static struct workqueue_struct *kpsmoused_wq;
+
+struct psmouse_protocol {
+ enum psmouse_type type;
+ char *name;
+ char *alias;
+ int maxproto;
+ int (*detect)(struct psmouse *, int);
+ int (*init)(struct psmouse *);
+};
/*
* psmouse_process_byte() analyzes the PS/2 data stream and reports
static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
{
- struct input_dev *dev = &psmouse->dev;
+ struct input_dev *dev = psmouse->dev;
unsigned char *packet = psmouse->packet;
if (psmouse->pktcnt < psmouse->pktsize)
}
/*
- * psmouse_interrupt() handles incoming characters, either gathering them into
- * packets or passing them to the command routine as command output.
+ * __psmouse_set_state() sets new psmouse state and resets all flags.
+ */
+
+static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
+{
+ psmouse->state = new_state;
+ psmouse->pktcnt = psmouse->out_of_sync = 0;
+ psmouse->ps2dev.flags = 0;
+ psmouse->last = jiffies;
+}
+
+
+/*
+ * psmouse_set_state() sets new psmouse state and resets all flags and
+ * counters while holding serio lock so fighting with interrupt handler
+ * is not a concern.
+ */
+
+static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
+{
+ serio_pause_rx(psmouse->ps2dev.serio);
+ __psmouse_set_state(psmouse, new_state);
+ serio_continue_rx(psmouse->ps2dev.serio);
+}
+
+/*
+ * psmouse_handle_byte() processes one byte of the input data stream
+ * by calling corresponding protocol handler.
+ */
+
+static int psmouse_handle_byte(struct psmouse *psmouse, struct pt_regs *regs)
+{
+ psmouse_ret_t rc = psmouse->protocol_handler(psmouse, regs);
+
+ 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 == 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) {
+ psmouse->out_of_sync = 0;
+ printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
+ psmouse->name, psmouse->phys);
+ }
+ break;
+
+ case PSMOUSE_GOOD_DATA:
+ break;
+ }
+ return 0;
+}
+
+/*
+ * psmouse_interrupt() handles incoming characters, either passing them
+ * for normal processing or gathering them as command response.
*/
static irqreturn_t psmouse_interrupt(struct serio *serio,
unsigned char data, unsigned int flags, struct pt_regs *regs)
{
struct psmouse *psmouse = serio_get_drvdata(serio);
- psmouse_ret_t rc;
if (psmouse->state == PSMOUSE_IGNORE)
goto out;
if (ps2_handle_response(&psmouse->ps2dev, data))
goto out;
- if (psmouse->state == PSMOUSE_INITIALIZING)
+ if (psmouse->state <= PSMOUSE_RESYNCING)
goto out;
if (psmouse->state == PSMOUSE_ACTIVATED &&
psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
- printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
+ printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
psmouse->name, psmouse->phys, psmouse->pktcnt);
- psmouse->pktcnt = 0;
+ psmouse->badbyte = psmouse->packet[0];
+ __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
+ queue_work(kpsmoused_wq, &psmouse->resync_work);
+ goto out;
}
- psmouse->last = jiffies;
psmouse->packet[psmouse->pktcnt++] = data;
-
- if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
- if (psmouse->pktcnt == 1)
+/*
+ * Check if this is a new device announcement (0xAA 0x00)
+ */
+ if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
+ if (psmouse->pktcnt == 1) {
+ psmouse->last = jiffies;
goto out;
-
- if (psmouse->pktcnt == 2) {
- if (psmouse->packet[1] == PSMOUSE_RET_ID) {
- psmouse->state = PSMOUSE_IGNORE;
- serio_reconnect(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;
- }
}
- }
- rc = psmouse->protocol_handler(psmouse, regs);
+ if (psmouse->packet[1] == PSMOUSE_RET_ID) {
+ __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
+ serio_reconnect(serio);
+ goto out;
+ }
+/*
+ * Not a new device, try processing first byte normally
+ */
+ psmouse->pktcnt = 1;
+ if (psmouse_handle_byte(psmouse, regs))
+ goto out;
- switch (rc) {
- case PSMOUSE_BAD_DATA:
- printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
- psmouse->name, psmouse->phys, psmouse->pktcnt);
- psmouse->pktcnt = 0;
+ psmouse->packet[psmouse->pktcnt++] = data;
+ }
- if (++psmouse->out_of_sync == psmouse->resetafter) {
- psmouse->state = PSMOUSE_IGNORE;
- printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
- serio_reconnect(psmouse->ps2dev.serio);
- }
- break;
+/*
+ * See if we need to force resync because mouse was idle for too long
+ */
+ if (psmouse->state == PSMOUSE_ACTIVATED &&
+ psmouse->pktcnt == 1 && psmouse->resync_time &&
+ time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) {
+ psmouse->badbyte = psmouse->packet[0];
+ __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
+ queue_work(kpsmoused_wq, &psmouse->resync_work);
+ goto out;
+ }
- case PSMOUSE_FULL_PACKET:
- psmouse->pktcnt = 0;
- if (psmouse->out_of_sync) {
- psmouse->out_of_sync = 0;
- printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
- psmouse->name, psmouse->phys);
- }
- break;
+ psmouse->last = jiffies;
+ psmouse_handle_byte(psmouse, regs);
- case PSMOUSE_GOOD_DATA:
- break;
- }
-out:
+ out:
return IRQ_HANDLED;
}
return -1;
if (set_properties) {
- set_bit(BTN_EXTRA, psmouse->dev.keybit);
- set_bit(BTN_SIDE, psmouse->dev.keybit);
- set_bit(REL_WHEEL, psmouse->dev.relbit);
+ set_bit(BTN_EXTRA, psmouse->dev->keybit);
+ set_bit(BTN_SIDE, psmouse->dev->keybit);
+ set_bit(REL_WHEEL, psmouse->dev->relbit);
psmouse->vendor = "Genius";
- psmouse->name = "Wheel Mouse";
+ psmouse->name = "Mouse";
psmouse->pktsize = 4;
}
return -1;
if (set_properties) {
- set_bit(REL_WHEEL, psmouse->dev.relbit);
+ set_bit(BTN_MIDDLE, psmouse->dev->keybit);
+ set_bit(REL_WHEEL, psmouse->dev->relbit);
if (!psmouse->vendor) psmouse->vendor = "Generic";
if (!psmouse->name) psmouse->name = "Wheel Mouse";
return -1;
if (set_properties) {
- set_bit(REL_WHEEL, psmouse->dev.relbit);
- set_bit(BTN_SIDE, psmouse->dev.keybit);
- set_bit(BTN_EXTRA, psmouse->dev.keybit);
+ set_bit(BTN_MIDDLE, psmouse->dev->keybit);
+ set_bit(REL_WHEEL, psmouse->dev->relbit);
+ set_bit(BTN_SIDE, psmouse->dev->keybit);
+ set_bit(BTN_EXTRA, psmouse->dev->keybit);
if (!psmouse->vendor) psmouse->vendor = "Generic";
if (!psmouse->name) psmouse->name = "Explorer Mouse";
return -1;
if (set_properties) {
- set_bit(BTN_EXTRA, psmouse->dev.keybit);
+ set_bit(BTN_EXTRA, psmouse->dev->keybit);
psmouse->vendor = "Kensington";
psmouse->name = "ThinkingMouse";
*/
static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
{
- if (!psmouse->vendor) psmouse->vendor = "Generic";
- if (!psmouse->name) psmouse->name = "Mouse";
+ if (set_properties) {
+ if (!psmouse->vendor) psmouse->vendor = "Generic";
+ if (!psmouse->name) psmouse->name = "Mouse";
+ }
return 0;
}
+
/*
* psmouse_extensions() probes for any extensions to the basic PS/2 protocol
* the mouse may have.
{
int synaptics_hardware = 0;
+/*
+ * We always check for lifebook because it does not disturb mouse
+ * (it only checks DMI information).
+ */
+ if (lifebook_detect(psmouse, set_properties) == 0) {
+ if (max_proto > PSMOUSE_IMEX) {
+ if (!set_properties || lifebook_init(psmouse) == 0)
+ return PSMOUSE_LIFEBOOK;
+ }
+ }
+
/*
* Try Kensington ThinkingMouse (we try first, because synaptics probe
* upsets the thinkingmouse).
if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0)
return PSMOUSE_PS2PP;
+ if (max_proto > PSMOUSE_IMEX && trackpoint_detect(psmouse, set_properties) == 0)
+ return PSMOUSE_TRACKPOINT;
+
/*
* Reset to defaults in case the device got confused by extended
- * protocol probes.
+ * protocol probes. Note that we do full reset becuase some mice
+ * put themselves to sleep when see PSMOUSE_RESET_DIS.
*/
- ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
+ psmouse_reset(psmouse);
if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
return PSMOUSE_IMEX;
* extensions.
*/
psmouse_reset(psmouse);
- ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
}
return PSMOUSE_PS2;
}
+static struct psmouse_protocol psmouse_protocols[] = {
+ {
+ .type = PSMOUSE_PS2,
+ .name = "PS/2",
+ .alias = "bare",
+ .maxproto = 1,
+ .detect = ps2bare_detect,
+ },
+ {
+ .type = PSMOUSE_PS2PP,
+ .name = "PS2++",
+ .alias = "logitech",
+ .detect = ps2pp_init,
+ },
+ {
+ .type = PSMOUSE_THINKPS,
+ .name = "ThinkPS/2",
+ .alias = "thinkps",
+ .detect = thinking_detect,
+ },
+ {
+ .type = PSMOUSE_GENPS,
+ .name = "GenPS/2",
+ .alias = "genius",
+ .detect = genius_detect,
+ },
+ {
+ .type = PSMOUSE_IMPS,
+ .name = "ImPS/2",
+ .alias = "imps",
+ .maxproto = 1,
+ .detect = intellimouse_detect,
+ },
+ {
+ .type = PSMOUSE_IMEX,
+ .name = "ImExPS/2",
+ .alias = "exps",
+ .maxproto = 1,
+ .detect = im_explorer_detect,
+ },
+ {
+ .type = PSMOUSE_SYNAPTICS,
+ .name = "SynPS/2",
+ .alias = "synaptics",
+ .detect = synaptics_detect,
+ .init = synaptics_init,
+ },
+ {
+ .type = PSMOUSE_ALPS,
+ .name = "AlpsPS/2",
+ .alias = "alps",
+ .detect = alps_detect,
+ .init = alps_init,
+ },
+ {
+ .type = PSMOUSE_LIFEBOOK,
+ .name = "LBPS/2",
+ .alias = "lifebook",
+ .init = lifebook_init,
+ },
+ {
+ .type = PSMOUSE_TRACKPOINT,
+ .name = "TPPS/2",
+ .alias = "trackpoint",
+ .detect = trackpoint_detect,
+ },
+ {
+ .type = PSMOUSE_AUTO,
+ .name = "auto",
+ .alias = "any",
+ .maxproto = 1,
+ },
+};
+
+static struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
+ if (psmouse_protocols[i].type == type)
+ return &psmouse_protocols[i];
+
+ WARN_ON(1);
+ return &psmouse_protocols[0];
+}
+
+static struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
+{
+ struct psmouse_protocol *p;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
+ p = &psmouse_protocols[i];
+
+ if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
+ (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
+ return &psmouse_protocols[i];
+ }
+
+ return NULL;
+}
+
+
/*
* psmouse_probe() probes for a PS/2 mouse.
*/
}
}
-/*
- * psmouse_set_state() sets new psmouse state and resets all flags and
- * counters while holding serio lock so fighting with interrupt handler
- * is not a concern.
- */
-
-static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
-{
- serio_pause_rx(psmouse->ps2dev.serio);
- psmouse->state = new_state;
- psmouse->pktcnt = psmouse->out_of_sync = 0;
- psmouse->ps2dev.flags = 0;
- serio_continue_rx(psmouse->ps2dev.serio);
-}
-
/*
* psmouse_activate() enables the mouse so that we get motion reports from it.
*/
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
}
+/*
+ * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it.
+ */
+
+static int psmouse_poll(struct psmouse *psmouse)
+{
+ return ps2_command(&psmouse->ps2dev, psmouse->packet,
+ PSMOUSE_CMD_POLL | (psmouse->pktsize << 8));
+}
+
+
+/*
+ * psmouse_resync() attempts to re-validate current protocol.
+ */
+
+static void psmouse_resync(void *p)
+{
+ struct psmouse *psmouse = p, *parent = NULL;
+ struct serio *serio = psmouse->ps2dev.serio;
+ psmouse_ret_t rc = PSMOUSE_GOOD_DATA;
+ int failed = 0, enabled = 0;
+ int i;
+
+ mutex_lock(&psmouse_mutex);
+
+ if (psmouse->state != PSMOUSE_RESYNCING)
+ goto out;
+
+ if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
+ parent = serio_get_drvdata(serio->parent);
+ psmouse_deactivate(parent);
+ }
+
+/*
+ * Some mice don't ACK commands sent while they are in the middle of
+ * transmitting motion packet. To avoid delay we use ps2_sendbyte()
+ * instead of ps2_command() which would wait for 200ms for an ACK
+ * that may never come.
+ * As an additional quirk ALPS touchpads may not only forget to ACK
+ * disable command but will stop reporting taps, so if we see that
+ * mouse at least once ACKs disable we will do full reconnect if ACK
+ * is missing.
+ */
+ psmouse->num_resyncs++;
+
+ if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) {
+ if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command)
+ failed = 1;
+ } else
+ psmouse->acks_disable_command = 1;
+
+/*
+ * Poll the mouse. If it was reset the packet will be shorter than
+ * psmouse->pktsize and ps2_command will fail. We do not expect and
+ * do not handle scenario when mouse "upgrades" its protocol while
+ * disconnected since it would require additional delay. If we ever
+ * see a mouse that does it we'll adjust the code.
+ */
+ if (!failed) {
+ if (psmouse->poll(psmouse))
+ failed = 1;
+ else {
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
+ for (i = 0; i < psmouse->pktsize; i++) {
+ psmouse->pktcnt++;
+ rc = psmouse->protocol_handler(psmouse, NULL);
+ if (rc != PSMOUSE_GOOD_DATA)
+ break;
+ }
+ if (rc != PSMOUSE_FULL_PACKET)
+ failed = 1;
+ psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
+ }
+ }
+/*
+ * Now try to enable mouse. We try to do that even if poll failed and also
+ * repeat our attempts 5 times, otherwise we may be left out with disabled
+ * mouse.
+ */
+ for (i = 0; i < 5; i++) {
+ if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
+ enabled = 1;
+ break;
+ }
+ msleep(200);
+ }
+
+ if (!enabled) {
+ printk(KERN_WARNING "psmouse.c: failed to re-enable mouse on %s\n",
+ psmouse->ps2dev.serio->phys);
+ failed = 1;
+ }
+
+ if (failed) {
+ psmouse_set_state(psmouse, PSMOUSE_IGNORE);
+ printk(KERN_INFO "psmouse.c: resync failed, issuing reconnect request\n");
+ serio_reconnect(serio);
+ } else
+ psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
+
+ if (parent)
+ psmouse_activate(parent);
+ out:
+ mutex_unlock(&psmouse_mutex);
+}
/*
* psmouse_cleanup() resets the mouse into power-on state.
static void psmouse_disconnect(struct serio *serio)
{
- struct psmouse *psmouse, *parent;
-
- device_remove_file(&serio->dev, &psmouse_attr_rate);
- device_remove_file(&serio->dev, &psmouse_attr_resolution);
- device_remove_file(&serio->dev, &psmouse_attr_resetafter);
+ struct psmouse *psmouse, *parent = NULL;
psmouse = serio_get_drvdata(serio);
+
+ sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group);
+
+ mutex_lock(&psmouse_mutex);
+
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
+ /* make sure we don't have a resync in progress */
+ mutex_unlock(&psmouse_mutex);
+ flush_workqueue(kpsmoused_wq);
+ mutex_lock(&psmouse_mutex);
+
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
parent = serio_get_drvdata(serio->parent);
- if (parent->pt_deactivate)
- parent->pt_deactivate(parent);
+ psmouse_deactivate(parent);
}
if (psmouse->disconnect)
psmouse->disconnect(psmouse);
+ if (parent && parent->pt_deactivate)
+ parent->pt_deactivate(parent);
+
psmouse_set_state(psmouse, PSMOUSE_IGNORE);
- input_unregister_device(&psmouse->dev);
serio_close(serio);
serio_set_drvdata(serio, NULL);
+ input_unregister_device(psmouse->dev);
kfree(psmouse);
+
+ if (parent)
+ psmouse_activate(parent);
+
+ mutex_unlock(&psmouse_mutex);
+}
+
+static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_protocol *proto)
+{
+ struct input_dev *input_dev = psmouse->dev;
+
+ input_dev->private = psmouse;
+ input_dev->cdev.dev = &psmouse->ps2dev.serio->dev;
+
+ input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
+ input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+ input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
+
+ psmouse->set_rate = psmouse_set_rate;
+ psmouse->set_resolution = psmouse_set_resolution;
+ psmouse->poll = psmouse_poll;
+ psmouse->protocol_handler = psmouse_process_byte;
+ psmouse->pktsize = 3;
+
+ if (proto && (proto->detect || proto->init)) {
+ if (proto->detect && proto->detect(psmouse, 1) < 0)
+ return -1;
+
+ if (proto->init && proto->init(psmouse) < 0)
+ return -1;
+
+ psmouse->type = proto->type;
+ }
+ else
+ psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
+
+ /*
+ * If mouse's packet size is 3 there is no point in polling the
+ * device in hopes to detect protocol reset - we won't get less
+ * than 3 bytes response anyhow.
+ */
+ if (psmouse->pktsize == 3)
+ psmouse->resync_time = 0;
+
+ /*
+ * Some smart KVMs fake response to POLL command returning just
+ * 3 bytes and messing up our resync logic, so if initial poll
+ * fails we won't try polling the device anymore. Hopefully
+ * such KVM will maintain initially selected protocol.
+ */
+ if (psmouse->resync_time && psmouse->poll(psmouse))
+ psmouse->resync_time = 0;
+
+ sprintf(psmouse->devname, "%s %s %s",
+ psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name);
+
+ input_dev->name = psmouse->devname;
+ input_dev->phys = psmouse->phys;
+ input_dev->id.bustype = BUS_I8042;
+ input_dev->id.vendor = 0x0002;
+ input_dev->id.product = psmouse->type;
+ input_dev->id.version = psmouse->model;
+
+ return 0;
}
/*
static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
{
struct psmouse *psmouse, *parent = NULL;
- int retval;
+ struct input_dev *input_dev;
+ int retval = -ENOMEM;
+
+ mutex_lock(&psmouse_mutex);
/*
* If this is a pass-through port deactivate parent so the device
psmouse_deactivate(parent);
}
- if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL))) {
- retval = -ENOMEM;
+ psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!psmouse || !input_dev)
goto out;
- }
-
- memset(psmouse, 0, sizeof(struct psmouse));
ps2_init(&psmouse->ps2dev, serio);
+ INIT_WORK(&psmouse->resync_work, psmouse_resync, psmouse);
+ psmouse->dev = input_dev;
sprintf(psmouse->phys, "%s/input0", serio->phys);
- psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
- 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->dev.private = psmouse;
- psmouse->dev.dev = &serio->dev;
+
psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
serio_set_drvdata(serio, psmouse);
retval = serio_open(serio, drv);
- if (retval) {
- serio_set_drvdata(serio, NULL);
- kfree(psmouse);
+ if (retval)
goto out;
- }
if (psmouse_probe(psmouse) < 0) {
serio_close(serio);
- serio_set_drvdata(serio, NULL);
- kfree(psmouse);
retval = -ENODEV;
goto out;
}
psmouse->rate = psmouse_rate;
psmouse->resolution = psmouse_resolution;
psmouse->resetafter = psmouse_resetafter;
+ psmouse->resync_time = parent ? 0 : psmouse_resync_time;
psmouse->smartscroll = psmouse_smartscroll;
- psmouse->set_rate = psmouse_set_rate;
- psmouse->set_resolution = psmouse_set_resolution;
- psmouse->protocol_handler = psmouse_process_byte;
- psmouse->pktsize = 3;
-
- psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
-
- sprintf(psmouse->devname, "%s %s %s",
- psmouse_protocols[psmouse->type], psmouse->vendor, psmouse->name);
- psmouse->dev.name = psmouse->devname;
- psmouse->dev.phys = psmouse->phys;
- psmouse->dev.id.bustype = BUS_I8042;
- psmouse->dev.id.vendor = 0x0002;
- psmouse->dev.id.product = psmouse->type;
- psmouse->dev.id.version = psmouse->model;
-
- input_register_device(&psmouse->dev);
-
- printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
+ psmouse_switch_protocol(psmouse, NULL);
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
-
psmouse_initialize(psmouse);
+ input_register_device(psmouse->dev);
+
if (parent && parent->pt_activate)
parent->pt_activate(parent);
- device_create_file(&serio->dev, &psmouse_attr_rate);
- device_create_file(&serio->dev, &psmouse_attr_resolution);
- device_create_file(&serio->dev, &psmouse_attr_resetafter);
+ sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
psmouse_activate(psmouse);
retval = 0;
out:
- /* If this is a pass-through port the parent awaits to be activated */
+ if (retval) {
+ serio_set_drvdata(serio, NULL);
+ input_free_device(input_dev);
+ kfree(psmouse);
+ }
+
+ /* If this is a pass-through port the parent needs to be re-activated */
if (parent)
psmouse_activate(parent);
+ mutex_unlock(&psmouse_mutex);
return retval;
}
return -1;
}
+ mutex_lock(&psmouse_mutex);
+
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
parent = serio_get_drvdata(serio->parent);
psmouse_deactivate(parent);
if (parent)
psmouse_activate(parent);
+ mutex_unlock(&psmouse_mutex);
return rc;
}
.cleanup = psmouse_cleanup,
};
-ssize_t psmouse_attr_show_helper(struct device *dev, char *buf,
- ssize_t (*handler)(struct psmouse *, char *))
+ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr,
+ char *buf)
{
struct serio *serio = to_serio_port(dev);
+ struct psmouse_attribute *attr = to_psmouse_attr(devattr);
+ struct psmouse *psmouse;
int retval;
retval = serio_pin_driver(serio);
goto out;
}
- retval = handler(serio_get_drvdata(serio), buf);
+ psmouse = serio_get_drvdata(serio);
+
+ retval = attr->show(psmouse, attr->data, buf);
out:
serio_unpin_driver(serio);
return retval;
}
-ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count,
- ssize_t (*handler)(struct psmouse *, const char *, size_t))
+ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
{
struct serio *serio = to_serio_port(dev);
- struct psmouse *psmouse = serio_get_drvdata(serio);
- struct psmouse *parent = NULL;
+ struct psmouse_attribute *attr = to_psmouse_attr(devattr);
+ struct psmouse *psmouse, *parent = NULL;
int retval;
retval = serio_pin_driver(serio);
if (serio->drv != &psmouse_drv) {
retval = -ENODEV;
- goto out;
+ goto out_unpin;
+ }
+
+ retval = mutex_lock_interruptible(&psmouse_mutex);
+ if (retval)
+ goto out_unpin;
+
+ psmouse = serio_get_drvdata(serio);
+
+ if (psmouse->state == PSMOUSE_IGNORE) {
+ retval = -ENODEV;
+ goto out_unlock;
}
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
parent = serio_get_drvdata(serio->parent);
psmouse_deactivate(parent);
}
+
psmouse_deactivate(psmouse);
- retval = handler(psmouse, buf, count);
+ retval = attr->set(psmouse, attr->data, buf, count);
+
+ if (retval != -ENODEV)
+ psmouse_activate(psmouse);
- psmouse_activate(psmouse);
if (parent)
psmouse_activate(parent);
-out:
+ out_unlock:
+ mutex_unlock(&psmouse_mutex);
+ out_unpin:
serio_unpin_driver(serio);
return retval;
}
-static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf)
+static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
{
- return sprintf(buf, "%d\n", psmouse->rate);
+ unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset);
+
+ return sprintf(buf, "%lu\n", *field);
}
-static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count)
+static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
{
+ unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset);
unsigned long value;
char *rest;
if (*rest)
return -EINVAL;
- psmouse->set_rate(psmouse, value);
+ *field = value;
+
return count;
}
-static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf)
+static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf)
+{
+ return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
+}
+
+static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count)
{
- return sprintf(buf, "%d\n", psmouse->resolution);
+ struct serio *serio = psmouse->ps2dev.serio;
+ struct psmouse *parent = NULL;
+ struct input_dev *new_dev;
+ struct psmouse_protocol *proto;
+ int retry = 0;
+
+ if (!(proto = psmouse_protocol_by_name(buf, count)))
+ return -EINVAL;
+
+ if (psmouse->type == proto->type)
+ return count;
+
+ if (!(new_dev = input_allocate_device()))
+ return -ENOMEM;
+
+ while (serio->child) {
+ if (++retry > 3) {
+ printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n");
+ input_free_device(new_dev);
+ return -EIO;
+ }
+
+ mutex_unlock(&psmouse_mutex);
+ serio_unpin_driver(serio);
+ serio_unregister_child_port(serio);
+ serio_pin_driver_uninterruptible(serio);
+ mutex_lock(&psmouse_mutex);
+
+ if (serio->drv != &psmouse_drv) {
+ input_free_device(new_dev);
+ return -ENODEV;
+ }
+
+ if (psmouse->type == proto->type) {
+ input_free_device(new_dev);
+ return count; /* switched by other thread */
+ }
+ }
+
+ if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
+ parent = serio_get_drvdata(serio->parent);
+ if (parent->pt_deactivate)
+ parent->pt_deactivate(parent);
+ }
+
+ if (psmouse->disconnect)
+ psmouse->disconnect(psmouse);
+
+ psmouse_set_state(psmouse, PSMOUSE_IGNORE);
+ input_unregister_device(psmouse->dev);
+
+ psmouse->dev = new_dev;
+ psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
+
+ if (psmouse_switch_protocol(psmouse, proto) < 0) {
+ psmouse_reset(psmouse);
+ /* default to PSMOUSE_PS2 */
+ psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
+ }
+
+ psmouse_initialize(psmouse);
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
+
+ input_register_device(psmouse->dev);
+
+ if (parent && parent->pt_activate)
+ parent->pt_activate(parent);
+
+ return count;
}
-static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count)
+static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
{
unsigned long value;
char *rest;
if (*rest)
return -EINVAL;
- psmouse->set_resolution(psmouse, value);
+ psmouse->set_rate(psmouse, value);
return count;
}
-static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf)
-{
- return sprintf(buf, "%d\n", psmouse->resetafter);
-}
-
-static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count)
+static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
{
unsigned long value;
char *rest;
if (*rest)
return -EINVAL;
- psmouse->resetafter = value;
+ psmouse->set_resolution(psmouse, value);
return count;
}
+
static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
{
- int i;
+ struct psmouse_protocol *proto;
if (!val)
return -EINVAL;
- if (!strncmp(val, "any", 3)) {
- *((unsigned int *)kp->arg) = -1U;
- return 0;
- }
+ proto = psmouse_protocol_by_name(val, strlen(val));
- for (i = 0; i < ARRAY_SIZE(psmouse_proto_abbrev); i++) {
- if (!psmouse_proto_abbrev[i])
- continue;
+ if (!proto || !proto->maxproto)
+ return -EINVAL;
- if (!strncmp(val, psmouse_proto_abbrev[i], strlen(psmouse_proto_abbrev[i]))) {
- *((unsigned int *)kp->arg) = i;
- return 0;
- }
- }
+ *((unsigned int *)kp->arg) = proto->type;
- return -EINVAL; \
+ return 0;
}
static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
{
- return sprintf(buffer, "%s\n",
- psmouse_max_proto < ARRAY_SIZE(psmouse_proto_abbrev) ?
- psmouse_proto_abbrev[psmouse_max_proto] : "any");
+ int type = *((unsigned int *)kp->arg);
+
+ return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name);
}
static int __init psmouse_init(void)
{
+ kpsmoused_wq = create_singlethread_workqueue("kpsmoused");
+ if (!kpsmoused_wq) {
+ printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n");
+ return -ENOMEM;
+ }
+
serio_register_driver(&psmouse_drv);
+
return 0;
}
static void __exit psmouse_exit(void)
{
serio_unregister_driver(&psmouse_drv);
+ destroy_workqueue(kpsmoused_wq);
}
module_init(psmouse_init);
git://git.onelab.eu / linux-2.6.git / blobdiff