mirror of https://gitee.com/openkylin/linux.git
1625 lines
40 KiB
C
1625 lines
40 KiB
C
/*
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* PS/2 mouse driver
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*
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* Copyright (c) 1999-2002 Vojtech Pavlik
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* Copyright (c) 2003-2004 Dmitry Torokhov
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/input.h>
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#include <linux/serio.h>
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#include <linux/init.h>
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#include <linux/libps2.h>
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#include <linux/mutex.h>
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#include "psmouse.h"
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#include "synaptics.h"
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#include "logips2pp.h"
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#include "alps.h"
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#include "lifebook.h"
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#include "trackpoint.h"
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#include "touchkit_ps2.h"
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#define DRIVER_DESC "PS/2 mouse driver"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
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static int psmouse_set_maxproto(const char *val, struct kernel_param *kp);
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static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp);
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#define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
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#define param_set_proto_abbrev psmouse_set_maxproto
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#define param_get_proto_abbrev psmouse_get_maxproto
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module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
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MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
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static unsigned int psmouse_resolution = 200;
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module_param_named(resolution, psmouse_resolution, uint, 0644);
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MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
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static unsigned int psmouse_rate = 100;
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module_param_named(rate, psmouse_rate, uint, 0644);
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MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
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static unsigned int psmouse_smartscroll = 1;
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module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
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MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
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static unsigned int psmouse_resetafter = 5;
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module_param_named(resetafter, psmouse_resetafter, uint, 0644);
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MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
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static unsigned int psmouse_resync_time;
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module_param_named(resync_time, psmouse_resync_time, uint, 0644);
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MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
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PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO,
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NULL,
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psmouse_attr_show_protocol, psmouse_attr_set_protocol);
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PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
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(void *) offsetof(struct psmouse, rate),
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psmouse_show_int_attr, psmouse_attr_set_rate);
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PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
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(void *) offsetof(struct psmouse, resolution),
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psmouse_show_int_attr, psmouse_attr_set_resolution);
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PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
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(void *) offsetof(struct psmouse, resetafter),
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psmouse_show_int_attr, psmouse_set_int_attr);
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PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO,
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(void *) offsetof(struct psmouse, resync_time),
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psmouse_show_int_attr, psmouse_set_int_attr);
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static struct attribute *psmouse_attributes[] = {
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&psmouse_attr_protocol.dattr.attr,
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&psmouse_attr_rate.dattr.attr,
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&psmouse_attr_resolution.dattr.attr,
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&psmouse_attr_resetafter.dattr.attr,
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&psmouse_attr_resync_time.dattr.attr,
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NULL
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};
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static struct attribute_group psmouse_attribute_group = {
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.attrs = psmouse_attributes,
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};
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/*
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* psmouse_mutex protects all operations changing state of mouse
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* (connecting, disconnecting, changing rate or resolution via
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* sysfs). We could use a per-device semaphore but since there
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* rarely more than one PS/2 mouse connected and since semaphore
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* is taken in "slow" paths it is not worth it.
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*/
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static DEFINE_MUTEX(psmouse_mutex);
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static struct workqueue_struct *kpsmoused_wq;
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struct psmouse_protocol {
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enum psmouse_type type;
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const char *name;
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const char *alias;
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int maxproto;
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int (*detect)(struct psmouse *, int);
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int (*init)(struct psmouse *);
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};
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/*
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* psmouse_process_byte() analyzes the PS/2 data stream and reports
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* relevant events to the input module once full packet has arrived.
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*/
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static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
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{
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struct input_dev *dev = psmouse->dev;
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unsigned char *packet = psmouse->packet;
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if (psmouse->pktcnt < psmouse->pktsize)
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return PSMOUSE_GOOD_DATA;
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/*
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* Full packet accumulated, process it
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*/
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/*
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* Scroll wheel on IntelliMice, scroll buttons on NetMice
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*/
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if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
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input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
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/*
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* Scroll wheel and buttons on IntelliMouse Explorer
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*/
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if (psmouse->type == PSMOUSE_IMEX) {
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switch (packet[3] & 0xC0) {
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case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
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input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
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break;
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case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
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input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
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break;
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case 0x00:
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case 0xC0:
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input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
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input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
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input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
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break;
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}
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}
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/*
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* Extra buttons on Genius NewNet 3D
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*/
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if (psmouse->type == PSMOUSE_GENPS) {
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input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
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input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
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}
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/*
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* Extra button on ThinkingMouse
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*/
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if (psmouse->type == PSMOUSE_THINKPS) {
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input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
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/* Without this bit of weirdness moving up gives wildly high Y changes. */
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packet[1] |= (packet[0] & 0x40) << 1;
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}
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/*
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* Cortron PS2 Trackball reports SIDE button on the 4th bit of the first
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* byte.
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*/
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if (psmouse->type == PSMOUSE_CORTRON) {
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input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1);
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packet[0] |= 0x08;
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}
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/*
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* Generic PS/2 Mouse
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*/
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input_report_key(dev, BTN_LEFT, packet[0] & 1);
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input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
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input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
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input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
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input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
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input_sync(dev);
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return PSMOUSE_FULL_PACKET;
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}
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/*
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* __psmouse_set_state() sets new psmouse state and resets all flags.
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*/
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static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
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{
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psmouse->state = new_state;
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psmouse->pktcnt = psmouse->out_of_sync = 0;
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psmouse->ps2dev.flags = 0;
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psmouse->last = jiffies;
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}
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/*
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* psmouse_set_state() sets new psmouse state and resets all flags and
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* counters while holding serio lock so fighting with interrupt handler
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* is not a concern.
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*/
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static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
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{
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serio_pause_rx(psmouse->ps2dev.serio);
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__psmouse_set_state(psmouse, new_state);
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serio_continue_rx(psmouse->ps2dev.serio);
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}
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/*
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* psmouse_handle_byte() processes one byte of the input data stream
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* by calling corresponding protocol handler.
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*/
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static int psmouse_handle_byte(struct psmouse *psmouse)
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{
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psmouse_ret_t rc = psmouse->protocol_handler(psmouse);
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switch (rc) {
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case PSMOUSE_BAD_DATA:
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if (psmouse->state == PSMOUSE_ACTIVATED) {
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printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
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psmouse->name, psmouse->phys, psmouse->pktcnt);
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if (++psmouse->out_of_sync == psmouse->resetafter) {
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__psmouse_set_state(psmouse, PSMOUSE_IGNORE);
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printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
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serio_reconnect(psmouse->ps2dev.serio);
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return -1;
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}
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}
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psmouse->pktcnt = 0;
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break;
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case PSMOUSE_FULL_PACKET:
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psmouse->pktcnt = 0;
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if (psmouse->out_of_sync) {
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psmouse->out_of_sync = 0;
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printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
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psmouse->name, psmouse->phys);
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}
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break;
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case PSMOUSE_GOOD_DATA:
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break;
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}
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return 0;
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}
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/*
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* psmouse_interrupt() handles incoming characters, either passing them
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* for normal processing or gathering them as command response.
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*/
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static irqreturn_t psmouse_interrupt(struct serio *serio,
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unsigned char data, unsigned int flags)
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{
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struct psmouse *psmouse = serio_get_drvdata(serio);
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if (psmouse->state == PSMOUSE_IGNORE)
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goto out;
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if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
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if (psmouse->state == PSMOUSE_ACTIVATED)
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printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
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flags & SERIO_TIMEOUT ? " timeout" : "",
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flags & SERIO_PARITY ? " bad parity" : "");
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ps2_cmd_aborted(&psmouse->ps2dev);
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goto out;
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}
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if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
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if (ps2_handle_ack(&psmouse->ps2dev, data))
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goto out;
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if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
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if (ps2_handle_response(&psmouse->ps2dev, data))
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goto out;
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if (psmouse->state <= PSMOUSE_RESYNCING)
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goto out;
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if (psmouse->state == PSMOUSE_ACTIVATED &&
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psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
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printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
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psmouse->name, psmouse->phys, psmouse->pktcnt);
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psmouse->badbyte = psmouse->packet[0];
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__psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
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queue_work(kpsmoused_wq, &psmouse->resync_work);
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goto out;
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}
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psmouse->packet[psmouse->pktcnt++] = data;
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/*
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* Check if this is a new device announcement (0xAA 0x00)
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*/
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if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
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if (psmouse->pktcnt == 1) {
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psmouse->last = jiffies;
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goto out;
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}
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if (psmouse->packet[1] == PSMOUSE_RET_ID) {
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__psmouse_set_state(psmouse, PSMOUSE_IGNORE);
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serio_reconnect(serio);
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goto out;
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}
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/*
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* Not a new device, try processing first byte normally
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*/
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psmouse->pktcnt = 1;
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if (psmouse_handle_byte(psmouse))
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goto out;
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psmouse->packet[psmouse->pktcnt++] = data;
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}
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/*
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* See if we need to force resync because mouse was idle for too long
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*/
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if (psmouse->state == PSMOUSE_ACTIVATED &&
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psmouse->pktcnt == 1 && psmouse->resync_time &&
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time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) {
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psmouse->badbyte = psmouse->packet[0];
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__psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
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queue_work(kpsmoused_wq, &psmouse->resync_work);
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goto out;
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}
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psmouse->last = jiffies;
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psmouse_handle_byte(psmouse);
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out:
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return IRQ_HANDLED;
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}
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/*
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* psmouse_sliced_command() sends an extended PS/2 command to the mouse
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* using sliced syntax, understood by advanced devices, such as Logitech
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* or Synaptics touchpads. The command is encoded as:
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* 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
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* is the command.
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*/
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int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
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{
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int i;
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if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
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return -1;
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for (i = 6; i >= 0; i -= 2) {
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unsigned char d = (command >> i) & 3;
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if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
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return -1;
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}
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return 0;
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}
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/*
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* psmouse_reset() resets the mouse into power-on state.
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*/
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int psmouse_reset(struct psmouse *psmouse)
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{
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unsigned char param[2];
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if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
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return -1;
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if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
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return -1;
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return 0;
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}
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/*
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* Genius NetMouse magic init.
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*/
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static int genius_detect(struct psmouse *psmouse, int set_properties)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char param[4];
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param[0] = 3;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
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ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
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if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
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return -1;
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if (set_properties) {
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set_bit(BTN_EXTRA, psmouse->dev->keybit);
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set_bit(BTN_SIDE, psmouse->dev->keybit);
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set_bit(REL_WHEEL, psmouse->dev->relbit);
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psmouse->vendor = "Genius";
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psmouse->name = "Mouse";
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psmouse->pktsize = 4;
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}
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return 0;
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}
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|
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/*
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* IntelliMouse magic init.
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*/
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static int intellimouse_detect(struct psmouse *psmouse, int set_properties)
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{
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struct ps2dev *ps2dev = &psmouse->ps2dev;
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unsigned char param[2];
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param[0] = 200;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
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param[0] = 100;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
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param[0] = 80;
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
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ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
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if (param[0] != 3)
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return -1;
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if (set_properties) {
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set_bit(BTN_MIDDLE, psmouse->dev->keybit);
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set_bit(REL_WHEEL, psmouse->dev->relbit);
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if (!psmouse->vendor) psmouse->vendor = "Generic";
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if (!psmouse->name) psmouse->name = "Wheel Mouse";
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psmouse->pktsize = 4;
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}
|
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|
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return 0;
|
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}
|
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|
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/*
|
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* Try IntelliMouse/Explorer magic init.
|
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*/
|
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static int im_explorer_detect(struct psmouse *psmouse, int set_properties)
|
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{
|
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struct ps2dev *ps2dev = &psmouse->ps2dev;
|
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unsigned char param[2];
|
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|
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intellimouse_detect(psmouse, 0);
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|
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param[0] = 200;
|
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ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
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param[0] = 200;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
param[0] = 80;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
|
|
|
|
if (param[0] != 4)
|
|
return -1;
|
|
|
|
/* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
|
|
param[0] = 200;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
param[0] = 80;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
param[0] = 40;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
|
|
if (set_properties) {
|
|
set_bit(BTN_MIDDLE, psmouse->dev->keybit);
|
|
set_bit(REL_WHEEL, psmouse->dev->relbit);
|
|
set_bit(REL_HWHEEL, 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";
|
|
psmouse->pktsize = 4;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Kensington ThinkingMouse / ExpertMouse magic init.
|
|
*/
|
|
static int thinking_detect(struct psmouse *psmouse, int set_properties)
|
|
{
|
|
struct ps2dev *ps2dev = &psmouse->ps2dev;
|
|
unsigned char param[2];
|
|
static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
|
|
int i;
|
|
|
|
param[0] = 10;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
param[0] = 0;
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
|
|
for (i = 0; i < ARRAY_SIZE(seq); i++) {
|
|
param[0] = seq[i];
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
|
|
}
|
|
ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
|
|
|
|
if (param[0] != 2)
|
|
return -1;
|
|
|
|
if (set_properties) {
|
|
set_bit(BTN_EXTRA, psmouse->dev->keybit);
|
|
|
|
psmouse->vendor = "Kensington";
|
|
psmouse->name = "ThinkingMouse";
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Bare PS/2 protocol "detection". Always succeeds.
|
|
*/
|
|
static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
|
|
{
|
|
if (set_properties) {
|
|
if (!psmouse->vendor) psmouse->vendor = "Generic";
|
|
if (!psmouse->name) psmouse->name = "Mouse";
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Cortron PS/2 protocol detection. There's no special way to detect it, so it
|
|
* must be forced by sysfs protocol writing.
|
|
*/
|
|
static int cortron_detect(struct psmouse *psmouse, int set_properties)
|
|
{
|
|
if (set_properties) {
|
|
psmouse->vendor = "Cortron";
|
|
psmouse->name = "PS/2 Trackball";
|
|
set_bit(BTN_SIDE, psmouse->dev->keybit);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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, int set_properties)
|
|
{
|
|
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 && 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 && synaptics_detect(psmouse, set_properties) == 0) {
|
|
synaptics_hardware = 1;
|
|
|
|
if (max_proto > PSMOUSE_IMEX) {
|
|
if (!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 ALPS TouchPad
|
|
*/
|
|
if (max_proto > PSMOUSE_IMEX) {
|
|
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
|
|
if (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;
|
|
}
|
|
}
|
|
|
|
if (max_proto > PSMOUSE_IMEX) {
|
|
|
|
if (genius_detect(psmouse, set_properties) == 0)
|
|
return PSMOUSE_GENPS;
|
|
|
|
if (ps2pp_init(psmouse, set_properties) == 0)
|
|
return PSMOUSE_PS2PP;
|
|
|
|
if (trackpoint_detect(psmouse, set_properties) == 0)
|
|
return PSMOUSE_TRACKPOINT;
|
|
|
|
if (touchkit_ps2_detect(psmouse, set_properties) == 0)
|
|
return PSMOUSE_TOUCHKIT_PS2;
|
|
}
|
|
|
|
/*
|
|
* 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 && im_explorer_detect(psmouse, set_properties) == 0)
|
|
return PSMOUSE_IMEX;
|
|
|
|
if (max_proto >= PSMOUSE_IMPS && 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.
|
|
*/
|
|
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,
|
|
.name = "PS/2",
|
|
.alias = "bare",
|
|
.maxproto = 1,
|
|
.detect = ps2bare_detect,
|
|
},
|
|
#ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
|
|
{
|
|
.type = PSMOUSE_PS2PP,
|
|
.name = "PS2++",
|
|
.alias = "logitech",
|
|
.detect = ps2pp_init,
|
|
},
|
|
#endif
|
|
{
|
|
.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,
|
|
},
|
|
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
|
|
{
|
|
.type = PSMOUSE_SYNAPTICS,
|
|
.name = "SynPS/2",
|
|
.alias = "synaptics",
|
|
.detect = synaptics_detect,
|
|
.init = synaptics_init,
|
|
},
|
|
#endif
|
|
#ifdef CONFIG_MOUSE_PS2_ALPS
|
|
{
|
|
.type = PSMOUSE_ALPS,
|
|
.name = "AlpsPS/2",
|
|
.alias = "alps",
|
|
.detect = alps_detect,
|
|
.init = alps_init,
|
|
},
|
|
#endif
|
|
#ifdef CONFIG_MOUSE_PS2_LIFEBOOK
|
|
{
|
|
.type = PSMOUSE_LIFEBOOK,
|
|
.name = "LBPS/2",
|
|
.alias = "lifebook",
|
|
.init = lifebook_init,
|
|
},
|
|
#endif
|
|
#ifdef CONFIG_MOUSE_PS2_TRACKPOINT
|
|
{
|
|
.type = PSMOUSE_TRACKPOINT,
|
|
.name = "TPPS/2",
|
|
.alias = "trackpoint",
|
|
.detect = trackpoint_detect,
|
|
},
|
|
#endif
|
|
#ifdef CONFIG_MOUSE_PS2_TOUCHKIT
|
|
{
|
|
.type = PSMOUSE_TOUCHKIT_PS2,
|
|
.name = "touchkitPS/2",
|
|
.alias = "touchkit",
|
|
.detect = touchkit_ps2_detect,
|
|
},
|
|
#endif
|
|
{
|
|
.type = PSMOUSE_CORTRON,
|
|
.name = "CortronPS/2",
|
|
.alias = "cortps",
|
|
.detect = cortron_detect,
|
|
},
|
|
{
|
|
.type = PSMOUSE_AUTO,
|
|
.name = "auto",
|
|
.alias = "any",
|
|
.maxproto = 1,
|
|
},
|
|
};
|
|
|
|
static const 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 const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
|
|
{
|
|
const 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.
|
|
*/
|
|
|
|
static int psmouse_probe(struct psmouse *psmouse)
|
|
{
|
|
struct ps2dev *ps2dev = &psmouse->ps2dev;
|
|
unsigned char param[2];
|
|
|
|
/*
|
|
* First, we check if it's a mouse. It should send 0x00 or 0x03
|
|
* in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
|
|
* Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
|
|
* ID queries, probably due to a firmware bug.
|
|
*/
|
|
|
|
param[0] = 0xa5;
|
|
if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
|
|
return -1;
|
|
|
|
if (param[0] != 0x00 && param[0] != 0x03 &&
|
|
param[0] != 0x04 && param[0] != 0xff)
|
|
return -1;
|
|
|
|
/*
|
|
* Then we reset and disable the mouse so that it doesn't generate events.
|
|
*/
|
|
|
|
if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
|
|
printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Here we set the mouse resolution.
|
|
*/
|
|
|
|
void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
|
|
{
|
|
static const unsigned char params[] = { 0, 1, 2, 2, 3 };
|
|
unsigned char p;
|
|
|
|
if (resolution == 0 || resolution > 200)
|
|
resolution = 200;
|
|
|
|
p = params[resolution / 50];
|
|
ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
|
|
psmouse->resolution = 25 << p;
|
|
}
|
|
|
|
/*
|
|
* Here we set the mouse report rate.
|
|
*/
|
|
|
|
static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
|
|
{
|
|
static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
|
|
unsigned char r;
|
|
int i = 0;
|
|
|
|
while (rates[i] > rate) i++;
|
|
r = rates[i];
|
|
ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE);
|
|
psmouse->rate = r;
|
|
}
|
|
|
|
/*
|
|
* psmouse_initialize() initializes the mouse to a sane state.
|
|
*/
|
|
|
|
static void psmouse_initialize(struct psmouse *psmouse)
|
|
{
|
|
/*
|
|
* We set the mouse report rate, resolution and scaling.
|
|
*/
|
|
|
|
if (psmouse_max_proto != PSMOUSE_PS2) {
|
|
psmouse->set_rate(psmouse, psmouse->rate);
|
|
psmouse->set_resolution(psmouse, psmouse->resolution);
|
|
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* psmouse_activate() enables the mouse so that we get motion reports from it.
|
|
*/
|
|
|
|
static void psmouse_activate(struct psmouse *psmouse)
|
|
{
|
|
if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
|
|
printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
|
|
psmouse->ps2dev.serio->phys);
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
|
|
}
|
|
|
|
|
|
/*
|
|
* psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
|
|
* reports from it unless we explicitly request it.
|
|
*/
|
|
|
|
static void psmouse_deactivate(struct psmouse *psmouse)
|
|
{
|
|
if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
|
|
printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
|
|
psmouse->ps2dev.serio->phys);
|
|
|
|
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(struct work_struct *work)
|
|
{
|
|
struct psmouse *parent = NULL, *psmouse =
|
|
container_of(work, struct psmouse, resync_work);
|
|
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);
|
|
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_cleanup(struct serio *serio)
|
|
{
|
|
struct psmouse *psmouse = serio_get_drvdata(serio);
|
|
struct psmouse *parent = NULL;
|
|
|
|
mutex_lock(&psmouse_mutex);
|
|
|
|
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
|
|
parent = serio_get_drvdata(serio->parent);
|
|
psmouse_deactivate(parent);
|
|
}
|
|
|
|
psmouse_deactivate(psmouse);
|
|
|
|
if (psmouse->cleanup)
|
|
psmouse->cleanup(psmouse);
|
|
|
|
psmouse_reset(psmouse);
|
|
|
|
/*
|
|
* Some boxes, such as HP nx7400, get terribly confused if mouse
|
|
* is not fully enabled before suspending/shutting down.
|
|
*/
|
|
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
|
|
|
|
if (parent) {
|
|
if (parent->pt_deactivate)
|
|
parent->pt_deactivate(parent);
|
|
|
|
psmouse_activate(parent);
|
|
}
|
|
|
|
mutex_unlock(&psmouse_mutex);
|
|
}
|
|
|
|
/*
|
|
* psmouse_disconnect() closes and frees.
|
|
*/
|
|
|
|
static void psmouse_disconnect(struct serio *serio)
|
|
{
|
|
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);
|
|
psmouse_deactivate(parent);
|
|
}
|
|
|
|
if (psmouse->disconnect)
|
|
psmouse->disconnect(psmouse);
|
|
|
|
if (parent && parent->pt_deactivate)
|
|
parent->pt_deactivate(parent);
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_IGNORE);
|
|
|
|
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, const struct psmouse_protocol *proto)
|
|
{
|
|
struct input_dev *input_dev = psmouse->dev;
|
|
|
|
input_dev->dev.parent = &psmouse->ps2dev.serio->dev;
|
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
|
|
input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
|
|
BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
|
|
input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(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;
|
|
|
|
snprintf(psmouse->devname, sizeof(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;
|
|
}
|
|
|
|
/*
|
|
* psmouse_connect() is a callback from the serio module when
|
|
* an unhandled serio port is found.
|
|
*/
|
|
static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
|
|
{
|
|
struct psmouse *psmouse, *parent = NULL;
|
|
struct input_dev *input_dev;
|
|
int retval = 0, error = -ENOMEM;
|
|
|
|
mutex_lock(&psmouse_mutex);
|
|
|
|
/*
|
|
* If this is a pass-through port deactivate parent so the device
|
|
* connected to this port can be successfully identified
|
|
*/
|
|
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
|
|
parent = serio_get_drvdata(serio->parent);
|
|
psmouse_deactivate(parent);
|
|
}
|
|
|
|
psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
|
|
input_dev = input_allocate_device();
|
|
if (!psmouse || !input_dev)
|
|
goto err_free;
|
|
|
|
ps2_init(&psmouse->ps2dev, serio);
|
|
INIT_WORK(&psmouse->resync_work, psmouse_resync);
|
|
psmouse->dev = input_dev;
|
|
snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
|
|
|
|
serio_set_drvdata(serio, psmouse);
|
|
|
|
error = serio_open(serio, drv);
|
|
if (error)
|
|
goto err_clear_drvdata;
|
|
|
|
if (psmouse_probe(psmouse) < 0) {
|
|
error = -ENODEV;
|
|
goto err_close_serio;
|
|
}
|
|
|
|
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_switch_protocol(psmouse, NULL);
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
|
|
psmouse_initialize(psmouse);
|
|
|
|
error = input_register_device(psmouse->dev);
|
|
if (error)
|
|
goto err_protocol_disconnect;
|
|
|
|
if (parent && parent->pt_activate)
|
|
parent->pt_activate(parent);
|
|
|
|
error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
|
|
if (error)
|
|
goto err_pt_deactivate;
|
|
|
|
psmouse_activate(psmouse);
|
|
|
|
out:
|
|
/* 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;
|
|
|
|
err_pt_deactivate:
|
|
if (parent && parent->pt_deactivate)
|
|
parent->pt_deactivate(parent);
|
|
input_unregister_device(psmouse->dev);
|
|
input_dev = NULL; /* so we don't try to free it below */
|
|
err_protocol_disconnect:
|
|
if (psmouse->disconnect)
|
|
psmouse->disconnect(psmouse);
|
|
psmouse_set_state(psmouse, PSMOUSE_IGNORE);
|
|
err_close_serio:
|
|
serio_close(serio);
|
|
err_clear_drvdata:
|
|
serio_set_drvdata(serio, NULL);
|
|
err_free:
|
|
input_free_device(input_dev);
|
|
kfree(psmouse);
|
|
|
|
retval = error;
|
|
goto out;
|
|
}
|
|
|
|
|
|
static int psmouse_reconnect(struct serio *serio)
|
|
{
|
|
struct psmouse *psmouse = serio_get_drvdata(serio);
|
|
struct psmouse *parent = NULL;
|
|
struct serio_driver *drv = serio->drv;
|
|
int rc = -1;
|
|
|
|
if (!drv || !psmouse) {
|
|
printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
|
|
return -1;
|
|
}
|
|
|
|
mutex_lock(&psmouse_mutex);
|
|
|
|
if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
|
|
parent = serio_get_drvdata(serio->parent);
|
|
psmouse_deactivate(parent);
|
|
}
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
|
|
|
|
if (psmouse->reconnect) {
|
|
if (psmouse->reconnect(psmouse))
|
|
goto out;
|
|
} else if (psmouse_probe(psmouse) < 0 ||
|
|
psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
|
|
goto out;
|
|
|
|
/* ok, the device type (and capabilities) match the old one,
|
|
* we can continue using it, complete intialization
|
|
*/
|
|
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
|
|
|
|
psmouse_initialize(psmouse);
|
|
|
|
if (parent && parent->pt_activate)
|
|
parent->pt_activate(parent);
|
|
|
|
psmouse_activate(psmouse);
|
|
rc = 0;
|
|
|
|
out:
|
|
/* If this is a pass-through port the parent waits to be activated */
|
|
if (parent)
|
|
psmouse_activate(parent);
|
|
|
|
mutex_unlock(&psmouse_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static struct serio_device_id psmouse_serio_ids[] = {
|
|
{
|
|
.type = SERIO_8042,
|
|
.proto = SERIO_ANY,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{
|
|
.type = SERIO_PS_PSTHRU,
|
|
.proto = SERIO_ANY,
|
|
.id = SERIO_ANY,
|
|
.extra = SERIO_ANY,
|
|
},
|
|
{ 0 }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
|
|
|
|
static struct serio_driver psmouse_drv = {
|
|
.driver = {
|
|
.name = "psmouse",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.id_table = psmouse_serio_ids,
|
|
.interrupt = psmouse_interrupt,
|
|
.connect = psmouse_connect,
|
|
.reconnect = psmouse_reconnect,
|
|
.disconnect = psmouse_disconnect,
|
|
.cleanup = psmouse_cleanup,
|
|
};
|
|
|
|
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);
|
|
if (retval)
|
|
return retval;
|
|
|
|
if (serio->drv != &psmouse_drv) {
|
|
retval = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
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, struct device_attribute *devattr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct serio *serio = to_serio_port(dev);
|
|
struct psmouse_attribute *attr = to_psmouse_attr(devattr);
|
|
struct psmouse *psmouse, *parent = NULL;
|
|
int retval;
|
|
|
|
retval = serio_pin_driver(serio);
|
|
if (retval)
|
|
return retval;
|
|
|
|
if (serio->drv != &psmouse_drv) {
|
|
retval = -ENODEV;
|
|
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 = attr->set(psmouse, attr->data, buf, count);
|
|
|
|
if (retval != -ENODEV)
|
|
psmouse_activate(psmouse);
|
|
|
|
if (parent)
|
|
psmouse_activate(parent);
|
|
|
|
out_unlock:
|
|
mutex_unlock(&psmouse_mutex);
|
|
out_unpin:
|
|
serio_unpin_driver(serio);
|
|
return retval;
|
|
}
|
|
|
|
static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
|
|
{
|
|
unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
|
|
|
|
return sprintf(buf, "%u\n", *field);
|
|
}
|
|
|
|
static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
|
|
{
|
|
unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
|
|
unsigned long value;
|
|
char *rest;
|
|
|
|
value = simple_strtoul(buf, &rest, 10);
|
|
if (*rest)
|
|
return -EINVAL;
|
|
|
|
if ((unsigned int)value != value)
|
|
return -EINVAL;
|
|
|
|
*field = value;
|
|
|
|
return count;
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct serio *serio = psmouse->ps2dev.serio;
|
|
struct psmouse *parent = NULL;
|
|
struct input_dev *old_dev, *new_dev;
|
|
const struct psmouse_protocol *proto, *old_proto;
|
|
int error;
|
|
int retry = 0;
|
|
|
|
proto = psmouse_protocol_by_name(buf, count);
|
|
if (!proto)
|
|
return -EINVAL;
|
|
|
|
if (psmouse->type == proto->type)
|
|
return count;
|
|
|
|
new_dev = input_allocate_device();
|
|
if (!new_dev)
|
|
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);
|
|
}
|
|
|
|
old_dev = psmouse->dev;
|
|
old_proto = psmouse_protocol_by_type(psmouse->type);
|
|
|
|
if (psmouse->disconnect)
|
|
psmouse->disconnect(psmouse);
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_IGNORE);
|
|
|
|
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);
|
|
|
|
error = input_register_device(psmouse->dev);
|
|
if (error) {
|
|
if (psmouse->disconnect)
|
|
psmouse->disconnect(psmouse);
|
|
|
|
psmouse_set_state(psmouse, PSMOUSE_IGNORE);
|
|
input_free_device(new_dev);
|
|
psmouse->dev = old_dev;
|
|
psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
|
|
psmouse_switch_protocol(psmouse, old_proto);
|
|
psmouse_initialize(psmouse);
|
|
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
|
|
|
|
return error;
|
|
}
|
|
|
|
input_unregister_device(old_dev);
|
|
|
|
if (parent && parent->pt_activate)
|
|
parent->pt_activate(parent);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
|
|
{
|
|
unsigned long value;
|
|
char *rest;
|
|
|
|
value = simple_strtoul(buf, &rest, 10);
|
|
if (*rest)
|
|
return -EINVAL;
|
|
|
|
psmouse->set_rate(psmouse, value);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
|
|
{
|
|
unsigned long value;
|
|
char *rest;
|
|
|
|
value = simple_strtoul(buf, &rest, 10);
|
|
if (*rest)
|
|
return -EINVAL;
|
|
|
|
psmouse->set_resolution(psmouse, value);
|
|
return count;
|
|
}
|
|
|
|
|
|
static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
|
|
{
|
|
const struct psmouse_protocol *proto;
|
|
|
|
if (!val)
|
|
return -EINVAL;
|
|
|
|
proto = psmouse_protocol_by_name(val, strlen(val));
|
|
|
|
if (!proto || !proto->maxproto)
|
|
return -EINVAL;
|
|
|
|
*((unsigned int *)kp->arg) = proto->type;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
|
|
{
|
|
int type = *((unsigned int *)kp->arg);
|
|
|
|
return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name);
|
|
}
|
|
|
|
static int __init psmouse_init(void)
|
|
{
|
|
int err;
|
|
|
|
kpsmoused_wq = create_singlethread_workqueue("kpsmoused");
|
|
if (!kpsmoused_wq) {
|
|
printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
err = serio_register_driver(&psmouse_drv);
|
|
if (err)
|
|
destroy_workqueue(kpsmoused_wq);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __exit psmouse_exit(void)
|
|
{
|
|
serio_unregister_driver(&psmouse_drv);
|
|
destroy_workqueue(kpsmoused_wq);
|
|
}
|
|
|
|
module_init(psmouse_init);
|
|
module_exit(psmouse_exit);
|