| /* |
| * PS/2 mouse driver |
| * |
| * Copyright (c) 1999-2002 Vojtech Pavlik |
| * Copyright (c) 2003-2004 Dmitry Torokhov |
| */ |
| |
| /* |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/input.h> |
| #include <linux/serio.h> |
| #include <linux/init.h> |
| #include <linux/libps2.h> |
| #include "psmouse.h" |
| #include "synaptics.h" |
| #include "logips2pp.h" |
| #include "alps.h" |
| #include "lifebook.h" |
| |
| #define DRIVER_DESC "PS/2 mouse driver" |
| |
| MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| |
| 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); |
| #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(proto, psmouse_max_proto, proto_abbrev, 0644); |
| MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
| |
| static unsigned int psmouse_resolution = 200; |
| module_param_named(resolution, psmouse_resolution, uint, 0644); |
| MODULE_PARM_DESC(resolution, "Resolution, in dpi."); |
| |
| static unsigned int psmouse_rate = 100; |
| module_param_named(rate, psmouse_rate, uint, 0644); |
| MODULE_PARM_DESC(rate, "Report rate, in reports per second."); |
| |
| static unsigned int psmouse_smartscroll = 1; |
| 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; |
| module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
| MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); |
| |
| PSMOUSE_DEFINE_ATTR(protocol); |
| PSMOUSE_DEFINE_ATTR(rate); |
| PSMOUSE_DEFINE_ATTR(resolution); |
| PSMOUSE_DEFINE_ATTR(resetafter); |
| |
| __obsolete_setup("psmouse_noext"); |
| __obsolete_setup("psmouse_resolution="); |
| __obsolete_setup("psmouse_smartscroll="); |
| __obsolete_setup("psmouse_resetafter="); |
| __obsolete_setup("psmouse_rate="); |
| |
| /* |
| * psmouse_sem 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 DECLARE_MUTEX(psmouse_sem); |
| |
| 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 |
| * relevant events to the input module once full packet has arrived. |
| */ |
| |
| static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs) |
| { |
| struct input_dev *dev = &psmouse->dev; |
| unsigned char *packet = psmouse->packet; |
| |
| if (psmouse->pktcnt < psmouse->pktsize) |
| return PSMOUSE_GOOD_DATA; |
| |
| /* |
| * Full packet accumulated, process it |
| */ |
| |
| input_regs(dev, regs); |
| |
| /* |
| * Scroll wheel on IntelliMice, scroll buttons on NetMice |
| */ |
| |
| if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) |
| input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); |
| |
| /* |
| * Scroll wheel and buttons on IntelliMouse Explorer |
| */ |
| |
| if (psmouse->type == PSMOUSE_IMEX) { |
| input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); |
| input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); |
| input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); |
| } |
| |
| /* |
| * Extra buttons on Genius NewNet 3D |
| */ |
| |
| if (psmouse->type == PSMOUSE_GENPS) { |
| input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); |
| input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); |
| } |
| |
| /* |
| * Extra button on ThinkingMouse |
| */ |
| if (psmouse->type == PSMOUSE_THINKPS) { |
| input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); |
| /* Without this bit of weirdness moving up gives wildly high Y changes. */ |
| packet[1] |= (packet[0] & 0x40) << 1; |
| } |
| |
| /* |
| * Generic PS/2 Mouse |
| */ |
| |
| input_report_key(dev, BTN_LEFT, packet[0] & 1); |
| input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); |
| input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); |
| |
| input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); |
| input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); |
| |
| input_sync(dev); |
| |
| return PSMOUSE_FULL_PACKET; |
| } |
| |
| /* |
| * psmouse_interrupt() handles incoming characters, either gathering them into |
| * packets or passing them to the command routine as command output. |
| */ |
| |
| 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 (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { |
| if (psmouse->state == PSMOUSE_ACTIVATED) |
| printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", |
| flags & SERIO_TIMEOUT ? " timeout" : "", |
| flags & SERIO_PARITY ? " bad parity" : ""); |
| ps2_cmd_aborted(&psmouse->ps2dev); |
| goto out; |
| } |
| |
| if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) |
| if (ps2_handle_ack(&psmouse->ps2dev, data)) |
| goto out; |
| |
| if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) |
| if (ps2_handle_response(&psmouse->ps2dev, data)) |
| goto out; |
| |
| if (psmouse->state == PSMOUSE_INITIALIZING) |
| 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", |
| psmouse->name, psmouse->phys, psmouse->pktcnt); |
| psmouse->pktcnt = 0; |
| } |
| |
| psmouse->last = jiffies; |
| psmouse->packet[psmouse->pktcnt++] = data; |
| |
| if (psmouse->packet[0] == PSMOUSE_RET_BAT) { |
| if (psmouse->pktcnt == 1) |
| goto out; |
| |
| if (psmouse->pktcnt == 2) { |
| if (psmouse->packet[1] == PSMOUSE_RET_ID) { |
| psmouse->state = PSMOUSE_IGNORE; |
| serio_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); |
| |
| 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; |
| |
| 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; |
| |
| 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; |
| } |
| out: |
| return IRQ_HANDLED; |
| } |
| |
| |
| /* |
| * psmouse_sliced_command() sends an extended PS/2 command to the mouse |
| * using sliced syntax, understood by advanced devices, such as Logitech |
| * or Synaptics touchpads. The command is encoded as: |
| * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu |
| * is the command. |
| */ |
| int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) |
| { |
| int i; |
| |
| if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) |
| return -1; |
| |
| for (i = 6; i >= 0; i -= 2) { |
| unsigned char d = (command >> i) & 3; |
| if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| |
| /* |
| * psmouse_reset() resets the mouse into power-on state. |
| */ |
| int psmouse_reset(struct psmouse *psmouse) |
| { |
| unsigned char param[2]; |
| |
| if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) |
| return -1; |
| |
| if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) |
| return -1; |
| |
| return 0; |
| } |
| |
| |
| /* |
| * Genius NetMouse magic init. |
| */ |
| static int genius_detect(struct psmouse *psmouse, int set_properties) |
| { |
| struct ps2dev *ps2dev = &psmouse->ps2dev; |
| unsigned char param[4]; |
| |
| param[0] = 3; |
| ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); |
| ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); |
| ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); |
| ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); |
| ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); |
| |
| if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) |
| 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); |
| |
| psmouse->vendor = "Genius"; |
| psmouse->name = "Wheel Mouse"; |
| psmouse->pktsize = 4; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * IntelliMouse magic init. |
| */ |
| static int intellimouse_detect(struct psmouse *psmouse, int set_properties) |
| { |
| struct ps2dev *ps2dev = &psmouse->ps2dev; |
| unsigned char param[2]; |
| |
| param[0] = 200; |
| ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); |
| param[0] = 100; |
| 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] != 3) |
| return -1; |
| |
| if (set_properties) { |
| 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"; |
| psmouse->pktsize = 4; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Try IntelliMouse/Explorer magic init. |
| */ |
| static int im_explorer_detect(struct psmouse *psmouse, int set_properties) |
| { |
| struct ps2dev *ps2dev = &psmouse->ps2dev; |
| unsigned char param[2]; |
| |
| intellimouse_detect(psmouse, 0); |
| |
| param[0] = 200; |
| ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); |
| 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; |
| |
| if (set_properties) { |
| 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"; |
| 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]; |
| unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 }; |
| 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; seq[i]; i++) |
| ps2_command(ps2dev, seq + i, 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; |
| } |
| |
| |
| /* |
| * 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 |
| */ |
| 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 && genius_detect(psmouse, set_properties) == 0) |
| return PSMOUSE_GENPS; |
| |
| if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0) |
| return PSMOUSE_PS2PP; |
| |
| /* |
| * Reset to defaults in case the device got confused by extended |
| * protocol probes. |
| */ |
| ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
| |
| 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); |
| 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_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. |
| */ |
| |
| 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) |
| { |
| unsigned char params[] = { 0, 1, 2, 2, 3 }; |
| |
| if (resolution == 0 || resolution > 200) |
| resolution = 200; |
| |
| ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES); |
| psmouse->resolution = 25 << params[resolution / 50]; |
| } |
| |
| /* |
| * Here we set the mouse report rate. |
| */ |
| |
| static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) |
| { |
| unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
| int i = 0; |
| |
| while (rates[i] > rate) i++; |
| ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE); |
| psmouse->rate = rates[i]; |
| } |
| |
| /* |
| * psmouse_initialize() initializes the mouse to a sane state. |
| */ |
| |
| static void psmouse_initialize(struct psmouse *psmouse) |
| { |
| /* |
| * We set the mouse into streaming mode. |
| */ |
| |
| ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM); |
| |
| /* |
| * 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_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. |
| */ |
| |
| 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 explicitely 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_cleanup() resets the mouse into power-on state. |
| */ |
| |
| static void psmouse_cleanup(struct serio *serio) |
| { |
| struct psmouse *psmouse = serio_get_drvdata(serio); |
| |
| psmouse_reset(psmouse); |
| } |
| |
| /* |
| * psmouse_disconnect() closes and frees. |
| */ |
| |
| static void psmouse_disconnect(struct serio *serio) |
| { |
| struct psmouse *psmouse, *parent = NULL; |
| |
| psmouse = serio_get_drvdata(serio); |
| |
| device_remove_file(&serio->dev, &psmouse_attr_protocol); |
| device_remove_file(&serio->dev, &psmouse_attr_rate); |
| device_remove_file(&serio->dev, &psmouse_attr_resolution); |
| device_remove_file(&serio->dev, &psmouse_attr_resetafter); |
| |
| down(&psmouse_sem); |
| |
| psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
| |
| 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); |
| |
| input_unregister_device(&psmouse->dev); |
| serio_close(serio); |
| serio_set_drvdata(serio, NULL); |
| kfree(psmouse); |
| |
| if (parent) |
| psmouse_activate(parent); |
| |
| up(&psmouse_sem); |
| } |
| |
| static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_protocol *proto) |
| { |
| memset(&psmouse->dev, 0, sizeof(struct input_dev)); |
| |
| init_input_dev(&psmouse->dev); |
| |
| psmouse->dev.private = psmouse; |
| psmouse->dev.dev = &psmouse->ps2dev.serio->dev; |
| |
| 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->set_rate = psmouse_set_rate; |
| psmouse->set_resolution = psmouse_set_resolution; |
| 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); |
| |
| sprintf(psmouse->devname, "%s %s %s", |
| psmouse_protocol_by_type(psmouse->type)->name, 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; |
| |
| 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; |
| int retval; |
| |
| down(&psmouse_sem); |
| |
| /* |
| * 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); |
| } |
| |
| if (!(psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL))) { |
| retval = -ENOMEM; |
| goto out; |
| } |
| |
| ps2_init(&psmouse->ps2dev, serio); |
| sprintf(psmouse->phys, "%s/input0", serio->phys); |
| |
| 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); |
| 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->smartscroll = psmouse_smartscroll; |
| |
| psmouse_switch_protocol(psmouse, NULL); |
| |
| input_register_device(&psmouse->dev); |
| printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys); |
| |
| psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
| |
| psmouse_initialize(psmouse); |
| |
| if (parent && parent->pt_activate) |
| parent->pt_activate(parent); |
| |
| device_create_file(&serio->dev, &psmouse_attr_protocol); |
| device_create_file(&serio->dev, &psmouse_attr_rate); |
| device_create_file(&serio->dev, &psmouse_attr_resolution); |
| device_create_file(&serio->dev, &psmouse_attr_resetafter); |
| |
| psmouse_activate(psmouse); |
| |
| retval = 0; |
| |
| out: |
| /* If this is a pass-through port the parent needs to be re-activated */ |
| if (parent) |
| psmouse_activate(parent); |
| |
| up(&psmouse_sem); |
| return retval; |
| } |
| |
| |
| 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; |
| } |
| |
| down(&psmouse_sem); |
| |
| 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); |
| |
| up(&psmouse_sem); |
| 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, char *buf, |
| ssize_t (*handler)(struct psmouse *, char *)) |
| { |
| struct serio *serio = to_serio_port(dev); |
| int retval; |
| |
| retval = serio_pin_driver(serio); |
| if (retval) |
| return retval; |
| |
| if (serio->drv != &psmouse_drv) { |
| retval = -ENODEV; |
| goto out; |
| } |
| |
| retval = handler(serio_get_drvdata(serio), 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)) |
| { |
| struct serio *serio = to_serio_port(dev); |
| struct psmouse *psmouse = serio_get_drvdata(serio); |
| struct 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 = down_interruptible(&psmouse_sem); |
| if (retval) |
| goto out_unpin; |
| |
| if (psmouse->state == PSMOUSE_IGNORE) { |
| retval = -ENODEV; |
| goto out_up; |
| } |
| |
| 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); |
| |
| if (retval != -ENODEV) |
| psmouse_activate(psmouse); |
| |
| if (parent) |
| psmouse_activate(parent); |
| |
| out_up: |
| up(&psmouse_sem); |
| out_unpin: |
| serio_unpin_driver(serio); |
| return retval; |
| } |
| |
| static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, char *buf) |
| { |
| return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); |
| } |
| |
| static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, const char *buf, size_t count) |
| { |
| struct serio *serio = psmouse->ps2dev.serio; |
| struct psmouse *parent = NULL; |
| struct psmouse_protocol *proto; |
| int retry = 0; |
| |
| if (!(proto = psmouse_protocol_by_name(buf, count))) |
| return -EINVAL; |
| |
| if (psmouse->type == proto->type) |
| return count; |
| |
| while (serio->child) { |
| if (++retry > 3) { |
| printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n"); |
| return -EIO; |
| } |
| |
| up(&psmouse_sem); |
| serio_unpin_driver(serio); |
| serio_unregister_child_port(serio); |
| serio_pin_driver_uninterruptible(serio); |
| down(&psmouse_sem); |
| |
| if (serio->drv != &psmouse_drv) |
| return -ENODEV; |
| |
| if (psmouse->type == proto->type) |
| 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_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); |
| printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys); |
| |
| if (parent && parent->pt_activate) |
| parent->pt_activate(parent); |
| |
| return count; |
| } |
| |
| static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf) |
| { |
| return sprintf(buf, "%d\n", psmouse->rate); |
| } |
| |
| static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, 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_show_resolution(struct psmouse *psmouse, char *buf) |
| { |
| return sprintf(buf, "%d\n", psmouse->resolution); |
| } |
| |
| static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, 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 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) |
| { |
| unsigned long value; |
| char *rest; |
| |
| value = simple_strtoul(buf, &rest, 10); |
| if (*rest) |
| return -EINVAL; |
| |
| psmouse->resetafter = value; |
| return count; |
| } |
| |
| static int psmouse_set_maxproto(const char *val, struct kernel_param *kp) |
| { |
| 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) |
| { |
| serio_register_driver(&psmouse_drv); |
| return 0; |
| } |
| |
| static void __exit psmouse_exit(void) |
| { |
| serio_unregister_driver(&psmouse_drv); |
| } |
| |
| module_init(psmouse_init); |
| module_exit(psmouse_exit); |