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2088 lines
51 KiB
2088 lines
51 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#define psmouse_fmt(fmt) fmt |
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#include <linux/bitops.h> |
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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 <linux/types.h> |
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|
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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 "hgpk.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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#include "elantech.h" |
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#include "sentelic.h" |
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#include "cypress_ps2.h" |
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#include "focaltech.h" |
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#include "vmmouse.h" |
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#include "byd.h" |
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#define DRIVER_DESC "PS/2 mouse driver" |
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MODULE_AUTHOR("Vojtech Pavlik <[email protected]>"); |
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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, const struct kernel_param *); |
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static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp); |
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static const struct kernel_param_ops param_ops_proto_abbrev = { |
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.set = psmouse_set_maxproto, |
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.get = psmouse_get_maxproto, |
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}; |
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#define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
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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 bool psmouse_smartscroll = true; |
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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 bool psmouse_a4tech_2wheels; |
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module_param_named(a4tech_workaround, psmouse_a4tech_2wheels, bool, 0644); |
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MODULE_PARM_DESC(a4tech_workaround, "A4Tech second scroll wheel workaround, 1 = enabled, 0 = disabled (default)."); |
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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 const 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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void psmouse_report_standard_buttons(struct input_dev *dev, u8 buttons) |
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{ |
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input_report_key(dev, BTN_LEFT, buttons & BIT(0)); |
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input_report_key(dev, BTN_MIDDLE, buttons & BIT(2)); |
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input_report_key(dev, BTN_RIGHT, buttons & BIT(1)); |
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} |
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void psmouse_report_standard_motion(struct input_dev *dev, u8 *packet) |
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{ |
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int x, y; |
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x = packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0; |
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y = packet[2] ? packet[2] - ((packet[0] << 3) & 0x100) : 0; |
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input_report_rel(dev, REL_X, x); |
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input_report_rel(dev, REL_Y, -y); |
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} |
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void psmouse_report_standard_packet(struct input_dev *dev, u8 *packet) |
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{ |
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psmouse_report_standard_buttons(dev, packet[0]); |
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psmouse_report_standard_motion(dev, packet); |
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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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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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u8 *packet = psmouse->packet; |
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int wheel; |
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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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switch (psmouse->protocol->type) { |
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case PSMOUSE_IMPS: |
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/* IntelliMouse has scroll wheel */ |
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input_report_rel(dev, REL_WHEEL, -(s8) packet[3]); |
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break; |
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case PSMOUSE_IMEX: |
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/* Scroll wheel and buttons on IntelliMouse Explorer */ |
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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, |
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-sign_extend32(packet[3], 5)); |
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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, |
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-sign_extend32(packet[3], 5)); |
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break; |
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case 0x00: |
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case 0xC0: |
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wheel = sign_extend32(packet[3], 3); |
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|
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/* |
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* Some A4Tech mice have two scroll wheels, with first |
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* one reporting +/-1 in the lower nibble, and second |
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* one reporting +/-2. |
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*/ |
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if (psmouse_a4tech_2wheels && abs(wheel) > 1) |
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input_report_rel(dev, REL_HWHEEL, wheel / 2); |
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else |
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input_report_rel(dev, REL_WHEEL, -wheel); |
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input_report_key(dev, BTN_SIDE, packet[3] & BIT(4)); |
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input_report_key(dev, BTN_EXTRA, packet[3] & BIT(5)); |
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break; |
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} |
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break; |
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case PSMOUSE_GENPS: |
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/* Report scroll buttons on NetMice */ |
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input_report_rel(dev, REL_WHEEL, -(s8) packet[3]); |
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/* Extra buttons on Genius NewNet 3D */ |
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input_report_key(dev, BTN_SIDE, packet[0] & BIT(6)); |
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input_report_key(dev, BTN_EXTRA, packet[0] & BIT(7)); |
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break; |
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case PSMOUSE_THINKPS: |
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/* Extra button on ThinkingMouse */ |
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input_report_key(dev, BTN_EXTRA, packet[0] & BIT(3)); |
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|
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/* |
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* Without this bit of weirdness moving up gives wildly |
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* high Y changes. |
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*/ |
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packet[1] |= (packet[0] & 0x40) << 1; |
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break; |
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case PSMOUSE_CORTRON: |
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/* |
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* Cortron PS2 Trackball reports SIDE button in the |
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* 4th bit of the first byte. |
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*/ |
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input_report_key(dev, BTN_SIDE, packet[0] & BIT(3)); |
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packet[0] |= BIT(3); |
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break; |
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default: |
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break; |
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} |
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/* Generic PS/2 Mouse */ |
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packet[0] |= psmouse->extra_buttons; |
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psmouse_report_standard_packet(dev, packet); |
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input_sync(dev); |
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return PSMOUSE_FULL_PACKET; |
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} |
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void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work, |
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unsigned long delay) |
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{ |
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queue_delayed_work(kpsmoused_wq, work, delay); |
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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_cnt = 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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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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psmouse_warn(psmouse, |
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"%s at %s lost sync at byte %d\n", |
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psmouse->name, psmouse->phys, |
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psmouse->pktcnt); |
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if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { |
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__psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
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psmouse_notice(psmouse, |
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"issuing reconnect request\n"); |
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serio_reconnect(psmouse->ps2dev.serio); |
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return -EIO; |
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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_cnt) { |
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psmouse->out_of_sync_cnt = 0; |
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psmouse_notice(psmouse, |
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"%s at %s - driver resynced.\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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static void psmouse_handle_oob_data(struct psmouse *psmouse, u8 data) |
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{ |
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switch (psmouse->oob_data_type) { |
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case PSMOUSE_OOB_NONE: |
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psmouse->oob_data_type = data; |
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break; |
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case PSMOUSE_OOB_EXTRA_BTNS: |
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psmouse_report_standard_buttons(psmouse->dev, data); |
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input_sync(psmouse->dev); |
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psmouse->extra_buttons = data; |
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psmouse->oob_data_type = PSMOUSE_OOB_NONE; |
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break; |
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default: |
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psmouse_warn(psmouse, |
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"unknown OOB_DATA type: 0x%02x\n", |
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psmouse->oob_data_type); |
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psmouse->oob_data_type = PSMOUSE_OOB_NONE; |
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break; |
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} |
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} |
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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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u8 data, unsigned int flags) |
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{ |
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struct psmouse *psmouse = serio_get_drvdata(serio); |
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|
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if (psmouse->state == PSMOUSE_IGNORE) |
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goto out; |
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if (unlikely((flags & SERIO_TIMEOUT) || |
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((flags & SERIO_PARITY) && |
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!psmouse->protocol->ignore_parity))) { |
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|
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if (psmouse->state == PSMOUSE_ACTIVATED) |
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psmouse_warn(psmouse, |
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"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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|
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if (flags & SERIO_OOB_DATA) { |
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psmouse_handle_oob_data(psmouse, data); |
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goto out; |
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} |
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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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|
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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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pm_wakeup_event(&serio->dev, 0); |
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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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psmouse_info(psmouse, "%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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psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
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goto out; |
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} |
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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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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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|
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if (psmouse->packet[1] == PSMOUSE_RET_ID || |
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(psmouse->protocol->type == PSMOUSE_HGPK && |
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psmouse->packet[1] == PSMOUSE_RET_BAT)) { |
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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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psmouse->pktcnt = 1; |
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if (psmouse_handle_byte(psmouse)) |
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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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|
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/* |
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* See if we need to force resync because mouse was idle for |
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* 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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psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
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goto out; |
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} |
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|
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psmouse->last = jiffies; |
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psmouse_handle_byte(psmouse); |
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|
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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_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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u8 param[2]; |
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int error; |
|
|
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error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT); |
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if (error) |
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return error; |
|
|
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if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) |
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return -EIO; |
|
|
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return 0; |
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} |
|
|
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/* |
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* Here we set the mouse resolution. |
|
*/ |
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void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) |
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{ |
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static const u8 params[] = { 0, 1, 2, 2, 3 }; |
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u8 p; |
|
|
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if (resolution == 0 || resolution > 200) |
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resolution = 200; |
|
|
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p = params[resolution / 50]; |
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ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); |
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psmouse->resolution = 25 << p; |
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} |
|
|
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/* |
|
* Here we set the mouse report rate. |
|
*/ |
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static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) |
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{ |
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static const u8 rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
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u8 r; |
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int i = 0; |
|
|
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while (rates[i] > rate) |
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i++; |
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r = rates[i]; |
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ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); |
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psmouse->rate = r; |
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} |
|
|
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/* |
|
* Here we set the mouse scaling. |
|
*/ |
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static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale) |
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{ |
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ps2_command(&psmouse->ps2dev, NULL, |
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scale == PSMOUSE_SCALE21 ? PSMOUSE_CMD_SETSCALE21 : |
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PSMOUSE_CMD_SETSCALE11); |
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} |
|
|
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/* |
|
* psmouse_poll() - default poll handler. Everyone except for ALPS uses it. |
|
*/ |
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static int psmouse_poll(struct psmouse *psmouse) |
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{ |
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return ps2_command(&psmouse->ps2dev, psmouse->packet, |
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PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); |
|
} |
|
|
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static bool psmouse_check_pnp_id(const char *id, const char * const ids[]) |
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{ |
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int i; |
|
|
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for (i = 0; ids[i]; i++) |
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if (!strcasecmp(id, ids[i])) |
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return true; |
|
|
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return false; |
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} |
|
|
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/* |
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* psmouse_matches_pnp_id - check if psmouse matches one of the passed in ids. |
|
*/ |
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bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[]) |
|
{ |
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struct serio *serio = psmouse->ps2dev.serio; |
|
char *p, *fw_id_copy, *save_ptr; |
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bool found = false; |
|
|
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if (strncmp(serio->firmware_id, "PNP: ", 5)) |
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return false; |
|
|
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fw_id_copy = kstrndup(&serio->firmware_id[5], |
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sizeof(serio->firmware_id) - 5, |
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GFP_KERNEL); |
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if (!fw_id_copy) |
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return false; |
|
|
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save_ptr = fw_id_copy; |
|
while ((p = strsep(&fw_id_copy, " ")) != NULL) { |
|
if (psmouse_check_pnp_id(p, ids)) { |
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found = true; |
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break; |
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} |
|
} |
|
|
|
kfree(save_ptr); |
|
return found; |
|
} |
|
|
|
/* |
|
* Genius NetMouse magic init. |
|
*/ |
|
static int genius_detect(struct psmouse *psmouse, bool set_properties) |
|
{ |
|
struct ps2dev *ps2dev = &psmouse->ps2dev; |
|
u8 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 -ENODEV; |
|
|
|
if (set_properties) { |
|
__set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
|
__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 = "Mouse"; |
|
psmouse->pktsize = 4; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* IntelliMouse magic init. |
|
*/ |
|
static int intellimouse_detect(struct psmouse *psmouse, bool set_properties) |
|
{ |
|
struct ps2dev *ps2dev = &psmouse->ps2dev; |
|
u8 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 -ENODEV; |
|
|
|
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, bool set_properties) |
|
{ |
|
struct ps2dev *ps2dev = &psmouse->ps2dev; |
|
u8 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 -ENODEV; |
|
|
|
/* 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, bool set_properties) |
|
{ |
|
struct ps2dev *ps2dev = &psmouse->ps2dev; |
|
u8 param[2]; |
|
static const u8 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 -ENODEV; |
|
|
|
if (set_properties) { |
|
__set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
|
__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, bool set_properties) |
|
{ |
|
if (set_properties) { |
|
if (!psmouse->vendor) |
|
psmouse->vendor = "Generic"; |
|
if (!psmouse->name) |
|
psmouse->name = "Mouse"; |
|
|
|
/* |
|
* We have no way of figuring true number of buttons so let's |
|
* assume that the device has 3. |
|
*/ |
|
input_set_capability(psmouse->dev, EV_KEY, BTN_MIDDLE); |
|
} |
|
|
|
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, bool set_properties) |
|
{ |
|
if (set_properties) { |
|
psmouse->vendor = "Cortron"; |
|
psmouse->name = "PS/2 Trackball"; |
|
|
|
__set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
|
__set_bit(BTN_SIDE, psmouse->dev->keybit); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static const struct psmouse_protocol psmouse_protocols[] = { |
|
{ |
|
.type = PSMOUSE_PS2, |
|
.name = "PS/2", |
|
.alias = "bare", |
|
.maxproto = true, |
|
.ignore_parity = true, |
|
.detect = ps2bare_detect, |
|
.try_passthru = true, |
|
}, |
|
#ifdef CONFIG_MOUSE_PS2_LOGIPS2PP |
|
{ |
|
.type = PSMOUSE_PS2PP, |
|
.name = "PS2++", |
|
.alias = "logitech", |
|
.detect = ps2pp_detect, |
|
}, |
|
#endif |
|
{ |
|
.type = PSMOUSE_THINKPS, |
|
.name = "ThinkPS/2", |
|
.alias = "thinkps", |
|
.detect = thinking_detect, |
|
}, |
|
#ifdef CONFIG_MOUSE_PS2_CYPRESS |
|
{ |
|
.type = PSMOUSE_CYPRESS, |
|
.name = "CyPS/2", |
|
.alias = "cypress", |
|
.detect = cypress_detect, |
|
.init = cypress_init, |
|
}, |
|
#endif |
|
{ |
|
.type = PSMOUSE_GENPS, |
|
.name = "GenPS/2", |
|
.alias = "genius", |
|
.detect = genius_detect, |
|
}, |
|
{ |
|
.type = PSMOUSE_IMPS, |
|
.name = "ImPS/2", |
|
.alias = "imps", |
|
.maxproto = true, |
|
.ignore_parity = true, |
|
.detect = intellimouse_detect, |
|
.try_passthru = true, |
|
}, |
|
{ |
|
.type = PSMOUSE_IMEX, |
|
.name = "ImExPS/2", |
|
.alias = "exps", |
|
.maxproto = true, |
|
.ignore_parity = true, |
|
.detect = im_explorer_detect, |
|
.try_passthru = true, |
|
}, |
|
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS |
|
{ |
|
.type = PSMOUSE_SYNAPTICS, |
|
.name = "SynPS/2", |
|
.alias = "synaptics", |
|
.detect = synaptics_detect, |
|
.init = synaptics_init_absolute, |
|
}, |
|
{ |
|
.type = PSMOUSE_SYNAPTICS_RELATIVE, |
|
.name = "SynRelPS/2", |
|
.alias = "synaptics-relative", |
|
.detect = synaptics_detect, |
|
.init = synaptics_init_relative, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS |
|
{ |
|
.type = PSMOUSE_SYNAPTICS_SMBUS, |
|
.name = "SynSMBus", |
|
.alias = "synaptics-smbus", |
|
.detect = synaptics_detect, |
|
.init = synaptics_init_smbus, |
|
.smbus_companion = true, |
|
}, |
|
#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", |
|
.detect = lifebook_detect, |
|
.init = lifebook_init, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_TRACKPOINT |
|
{ |
|
.type = PSMOUSE_TRACKPOINT, |
|
.name = "TPPS/2", |
|
.alias = "trackpoint", |
|
.detect = trackpoint_detect, |
|
.try_passthru = true, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_TOUCHKIT |
|
{ |
|
.type = PSMOUSE_TOUCHKIT_PS2, |
|
.name = "touchkitPS/2", |
|
.alias = "touchkit", |
|
.detect = touchkit_ps2_detect, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_OLPC |
|
{ |
|
.type = PSMOUSE_HGPK, |
|
.name = "OLPC HGPK", |
|
.alias = "hgpk", |
|
.detect = hgpk_detect, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_ELANTECH |
|
{ |
|
.type = PSMOUSE_ELANTECH, |
|
.name = "ETPS/2", |
|
.alias = "elantech", |
|
.detect = elantech_detect, |
|
.init = elantech_init_ps2, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_ELANTECH_SMBUS |
|
{ |
|
.type = PSMOUSE_ELANTECH_SMBUS, |
|
.name = "ETSMBus", |
|
.alias = "elantech-smbus", |
|
.detect = elantech_detect, |
|
.init = elantech_init_smbus, |
|
.smbus_companion = true, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_SENTELIC |
|
{ |
|
.type = PSMOUSE_FSP, |
|
.name = "FSPPS/2", |
|
.alias = "fsp", |
|
.detect = fsp_detect, |
|
.init = fsp_init, |
|
}, |
|
#endif |
|
{ |
|
.type = PSMOUSE_CORTRON, |
|
.name = "CortronPS/2", |
|
.alias = "cortps", |
|
.detect = cortron_detect, |
|
}, |
|
#ifdef CONFIG_MOUSE_PS2_FOCALTECH |
|
{ |
|
.type = PSMOUSE_FOCALTECH, |
|
.name = "FocalTechPS/2", |
|
.alias = "focaltech", |
|
.detect = focaltech_detect, |
|
.init = focaltech_init, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_VMMOUSE |
|
{ |
|
.type = PSMOUSE_VMMOUSE, |
|
.name = VMMOUSE_PSNAME, |
|
.alias = "vmmouse", |
|
.detect = vmmouse_detect, |
|
.init = vmmouse_init, |
|
}, |
|
#endif |
|
#ifdef CONFIG_MOUSE_PS2_BYD |
|
{ |
|
.type = PSMOUSE_BYD, |
|
.name = "BYDPS/2", |
|
.alias = "byd", |
|
.detect = byd_detect, |
|
.init = byd_init, |
|
}, |
|
#endif |
|
{ |
|
.type = PSMOUSE_AUTO, |
|
.name = "auto", |
|
.alias = "any", |
|
.maxproto = true, |
|
}, |
|
}; |
|
|
|
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]; |
|
|
|
return NULL; |
|
} |
|
|
|
static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
|
{ |
|
const struct psmouse_protocol *proto; |
|
|
|
proto = __psmouse_protocol_by_type(type); |
|
if (proto) |
|
return proto; |
|
|
|
WARN_ON(1); |
|
return &psmouse_protocols[0]; |
|
} |
|
|
|
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; |
|
} |
|
|
|
/* |
|
* Apply default settings to the psmouse structure. Most of them will |
|
* be overridden by individual protocol initialization routines. |
|
*/ |
|
static void psmouse_apply_defaults(struct psmouse *psmouse) |
|
{ |
|
struct input_dev *input_dev = psmouse->dev; |
|
|
|
bitmap_zero(input_dev->evbit, EV_CNT); |
|
bitmap_zero(input_dev->keybit, KEY_CNT); |
|
bitmap_zero(input_dev->relbit, REL_CNT); |
|
bitmap_zero(input_dev->absbit, ABS_CNT); |
|
bitmap_zero(input_dev->mscbit, MSC_CNT); |
|
|
|
input_set_capability(input_dev, EV_KEY, BTN_LEFT); |
|
input_set_capability(input_dev, EV_KEY, BTN_RIGHT); |
|
|
|
input_set_capability(input_dev, EV_REL, REL_X); |
|
input_set_capability(input_dev, EV_REL, REL_Y); |
|
|
|
__set_bit(INPUT_PROP_POINTER, input_dev->propbit); |
|
|
|
psmouse->protocol = &psmouse_protocols[0]; |
|
|
|
psmouse->set_rate = psmouse_set_rate; |
|
psmouse->set_resolution = psmouse_set_resolution; |
|
psmouse->set_scale = psmouse_set_scale; |
|
psmouse->poll = psmouse_poll; |
|
psmouse->protocol_handler = psmouse_process_byte; |
|
psmouse->pktsize = 3; |
|
psmouse->reconnect = NULL; |
|
psmouse->fast_reconnect = NULL; |
|
psmouse->disconnect = NULL; |
|
psmouse->cleanup = NULL; |
|
psmouse->pt_activate = NULL; |
|
psmouse->pt_deactivate = NULL; |
|
} |
|
|
|
static bool psmouse_do_detect(int (*detect)(struct psmouse *, bool), |
|
struct psmouse *psmouse, bool allow_passthrough, |
|
bool set_properties) |
|
{ |
|
if (psmouse->ps2dev.serio->id.type == SERIO_PS_PSTHRU && |
|
!allow_passthrough) { |
|
return false; |
|
} |
|
|
|
if (set_properties) |
|
psmouse_apply_defaults(psmouse); |
|
|
|
return detect(psmouse, set_properties) == 0; |
|
} |
|
|
|
static bool psmouse_try_protocol(struct psmouse *psmouse, |
|
enum psmouse_type type, |
|
unsigned int *max_proto, |
|
bool set_properties, bool init_allowed) |
|
{ |
|
const struct psmouse_protocol *proto; |
|
|
|
proto = __psmouse_protocol_by_type(type); |
|
if (!proto) |
|
return false; |
|
|
|
if (!psmouse_do_detect(proto->detect, psmouse, proto->try_passthru, |
|
set_properties)) |
|
return false; |
|
|
|
if (set_properties && proto->init && init_allowed) { |
|
if (proto->init(psmouse) != 0) { |
|
/* |
|
* We detected device, but init failed. Adjust |
|
* max_proto so we only try standard protocols. |
|
*/ |
|
if (*max_proto > PSMOUSE_IMEX) |
|
*max_proto = PSMOUSE_IMEX; |
|
|
|
return false; |
|
} |
|
} |
|
|
|
return true; |
|
} |
|
|
|
/* |
|
* psmouse_extensions() probes for any extensions to the basic PS/2 protocol |
|
* the mouse may have. |
|
*/ |
|
static int psmouse_extensions(struct psmouse *psmouse, |
|
unsigned int max_proto, bool set_properties) |
|
{ |
|
bool synaptics_hardware = false; |
|
int ret; |
|
|
|
/* |
|
* Always check for focaltech, this is safe as it uses pnp-id |
|
* matching. |
|
*/ |
|
if (psmouse_do_detect(focaltech_detect, |
|
psmouse, false, set_properties)) { |
|
if (max_proto > PSMOUSE_IMEX && |
|
IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH) && |
|
(!set_properties || focaltech_init(psmouse) == 0)) { |
|
return PSMOUSE_FOCALTECH; |
|
} |
|
/* |
|
* Restrict psmouse_max_proto so that psmouse_initialize() |
|
* does not try to reset rate and resolution, because even |
|
* that upsets the device. |
|
* This also causes us to basically fall through to basic |
|
* protocol detection, where we fully reset the mouse, |
|
* and set it up as bare PS/2 protocol device. |
|
*/ |
|
psmouse_max_proto = max_proto = PSMOUSE_PS2; |
|
} |
|
|
|
/* |
|
* We always check for LifeBook because it does not disturb mouse |
|
* (it only checks DMI information). |
|
*/ |
|
if (psmouse_try_protocol(psmouse, PSMOUSE_LIFEBOOK, &max_proto, |
|
set_properties, max_proto > PSMOUSE_IMEX)) |
|
return PSMOUSE_LIFEBOOK; |
|
|
|
if (psmouse_try_protocol(psmouse, PSMOUSE_VMMOUSE, &max_proto, |
|
set_properties, max_proto > PSMOUSE_IMEX)) |
|
return PSMOUSE_VMMOUSE; |
|
|
|
/* |
|
* Try Kensington ThinkingMouse (we try first, because Synaptics |
|
* probe upsets the ThinkingMouse). |
|
*/ |
|
if (max_proto > PSMOUSE_IMEX && |
|
psmouse_try_protocol(psmouse, PSMOUSE_THINKPS, &max_proto, |
|
set_properties, true)) { |
|
return PSMOUSE_THINKPS; |
|
} |
|
|
|
/* |
|
* Try Synaptics TouchPad. Note that probing is done even if |
|
* Synaptics protocol support is disabled in config - we need to |
|
* know if it is Synaptics so we can reset it properly after |
|
* probing for IntelliMouse. |
|
*/ |
|
if (max_proto > PSMOUSE_PS2 && |
|
psmouse_do_detect(synaptics_detect, |
|
psmouse, false, set_properties)) { |
|
synaptics_hardware = true; |
|
|
|
if (max_proto > PSMOUSE_IMEX) { |
|
/* |
|
* Try activating protocol, but check if support is |
|
* enabled first, since we try detecting Synaptics |
|
* even when protocol is disabled. |
|
*/ |
|
if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) || |
|
IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) { |
|
if (!set_properties) |
|
return PSMOUSE_SYNAPTICS; |
|
|
|
ret = synaptics_init(psmouse); |
|
if (ret >= 0) |
|
return ret; |
|
} |
|
|
|
/* |
|
* Some Synaptics touchpads can emulate extended |
|
* protocols (like IMPS/2). Unfortunately |
|
* Logitech/Genius probes confuse some firmware |
|
* versions so we'll have to skip them. |
|
*/ |
|
max_proto = PSMOUSE_IMEX; |
|
} |
|
|
|
/* |
|
* Make sure that touchpad is in relative mode, gestures |
|
* (taps) are enabled. |
|
*/ |
|
synaptics_reset(psmouse); |
|
} |
|
|
|
/* |
|
* Try Cypress Trackpad. We must try it before Finger Sensing Pad |
|
* because Finger Sensing Pad probe upsets some modules of Cypress |
|
* Trackpads. |
|
*/ |
|
if (max_proto > PSMOUSE_IMEX && |
|
psmouse_try_protocol(psmouse, PSMOUSE_CYPRESS, &max_proto, |
|
set_properties, true)) { |
|
return PSMOUSE_CYPRESS; |
|
} |
|
|
|
/* Try ALPS TouchPad */ |
|
if (max_proto > PSMOUSE_IMEX) { |
|
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
|
if (psmouse_try_protocol(psmouse, PSMOUSE_ALPS, |
|
&max_proto, set_properties, true)) |
|
return PSMOUSE_ALPS; |
|
} |
|
|
|
/* Try OLPC HGPK touchpad */ |
|
if (max_proto > PSMOUSE_IMEX && |
|
psmouse_try_protocol(psmouse, PSMOUSE_HGPK, &max_proto, |
|
set_properties, true)) { |
|
return PSMOUSE_HGPK; |
|
} |
|
|
|
/* Try Elantech touchpad */ |
|
if (max_proto > PSMOUSE_IMEX && |
|
psmouse_try_protocol(psmouse, PSMOUSE_ELANTECH, |
|
&max_proto, set_properties, false)) { |
|
if (!set_properties) |
|
return PSMOUSE_ELANTECH; |
|
|
|
ret = elantech_init(psmouse); |
|
if (ret >= 0) |
|
return ret; |
|
} |
|
|
|
if (max_proto > PSMOUSE_IMEX) { |
|
if (psmouse_try_protocol(psmouse, PSMOUSE_GENPS, |
|
&max_proto, set_properties, true)) |
|
return PSMOUSE_GENPS; |
|
|
|
if (psmouse_try_protocol(psmouse, PSMOUSE_PS2PP, |
|
&max_proto, set_properties, true)) |
|
return PSMOUSE_PS2PP; |
|
|
|
if (psmouse_try_protocol(psmouse, PSMOUSE_TRACKPOINT, |
|
&max_proto, set_properties, true)) |
|
return PSMOUSE_TRACKPOINT; |
|
|
|
if (psmouse_try_protocol(psmouse, PSMOUSE_TOUCHKIT_PS2, |
|
&max_proto, set_properties, true)) |
|
return PSMOUSE_TOUCHKIT_PS2; |
|
} |
|
|
|
/* |
|
* Try Finger Sensing Pad. We do it here because its probe upsets |
|
* Trackpoint devices (causing TP_READ_ID command to time out). |
|
*/ |
|
if (max_proto > PSMOUSE_IMEX && |
|
psmouse_try_protocol(psmouse, PSMOUSE_FSP, |
|
&max_proto, set_properties, true)) { |
|
return PSMOUSE_FSP; |
|
} |
|
|
|
/* |
|
* Reset to defaults in case the device got confused by extended |
|
* protocol probes. Note that we follow up with full reset because |
|
* some mice put themselves to sleep when they see PSMOUSE_RESET_DIS. |
|
*/ |
|
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
|
psmouse_reset(psmouse); |
|
|
|
if (max_proto >= PSMOUSE_IMEX && |
|
psmouse_try_protocol(psmouse, PSMOUSE_IMEX, |
|
&max_proto, set_properties, true)) { |
|
return PSMOUSE_IMEX; |
|
} |
|
|
|
if (max_proto >= PSMOUSE_IMPS && |
|
psmouse_try_protocol(psmouse, PSMOUSE_IMPS, |
|
&max_proto, set_properties, true)) { |
|
return PSMOUSE_IMPS; |
|
} |
|
|
|
/* |
|
* Okay, all failed, we have a standard mouse here. The number of |
|
* the buttons is still a question, though. We assume 3. |
|
*/ |
|
psmouse_try_protocol(psmouse, PSMOUSE_PS2, |
|
&max_proto, set_properties, true); |
|
|
|
if (synaptics_hardware) { |
|
/* |
|
* We detected Synaptics hardware but it did not respond to |
|
* IMPS/2 probes. We need to reset the touchpad because if |
|
* there is a track point on the pass through port it could |
|
* get disabled while probing for protocol extensions. |
|
*/ |
|
psmouse_reset(psmouse); |
|
} |
|
|
|
return PSMOUSE_PS2; |
|
} |
|
|
|
/* |
|
* psmouse_probe() probes for a PS/2 mouse. |
|
*/ |
|
static int psmouse_probe(struct psmouse *psmouse) |
|
{ |
|
struct ps2dev *ps2dev = &psmouse->ps2dev; |
|
u8 param[2]; |
|
int error; |
|
|
|
/* |
|
* 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; |
|
error = ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
|
if (error) |
|
return error; |
|
|
|
if (param[0] != 0x00 && param[0] != 0x03 && |
|
param[0] != 0x04 && param[0] != 0xff) |
|
return -ENODEV; |
|
|
|
/* |
|
* Then we reset and disable the mouse so that it doesn't generate |
|
* events. |
|
*/ |
|
error = ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
|
if (error) |
|
psmouse_warn(psmouse, "Failed to reset mouse on %s: %d\n", |
|
ps2dev->serio->phys, error); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* 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); |
|
psmouse->set_scale(psmouse, PSMOUSE_SCALE11); |
|
} |
|
} |
|
|
|
/* |
|
* psmouse_activate() enables the mouse so that we get motion reports from it. |
|
*/ |
|
int psmouse_activate(struct psmouse *psmouse) |
|
{ |
|
if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { |
|
psmouse_warn(psmouse, "Failed to enable mouse on %s\n", |
|
psmouse->ps2dev.serio->phys); |
|
return -1; |
|
} |
|
|
|
psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); |
|
return 0; |
|
} |
|
|
|
/* |
|
* psmouse_deactivate() puts the mouse into poll mode so that we don't get |
|
* motion reports from it unless we explicitly request it. |
|
*/ |
|
int psmouse_deactivate(struct psmouse *psmouse) |
|
{ |
|
int error; |
|
|
|
error = ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE); |
|
if (error) { |
|
psmouse_warn(psmouse, "Failed to deactivate mouse on %s: %d\n", |
|
psmouse->ps2dev.serio->phys, error); |
|
return error; |
|
} |
|
|
|
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
|
return 0; |
|
} |
|
|
|
/* |
|
* 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.work); |
|
struct serio *serio = psmouse->ps2dev.serio; |
|
psmouse_ret_t rc = PSMOUSE_GOOD_DATA; |
|
bool failed = false, enabled = false; |
|
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 = true; |
|
} else |
|
psmouse->acks_disable_command = true; |
|
|
|
/* |
|
* 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 = true; |
|
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 = true; |
|
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 = true; |
|
break; |
|
} |
|
msleep(200); |
|
} |
|
|
|
if (!enabled) { |
|
psmouse_warn(psmouse, "failed to re-enable mouse on %s\n", |
|
psmouse->ps2dev.serio->phys); |
|
failed = true; |
|
} |
|
|
|
if (failed) { |
|
psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
|
psmouse_info(psmouse, |
|
"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_set_state(psmouse, PSMOUSE_INITIALIZING); |
|
|
|
/* |
|
* Disable stream mode so cleanup routine can proceed undisturbed. |
|
*/ |
|
if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) |
|
psmouse_warn(psmouse, "Failed to disable mouse on %s\n", |
|
psmouse->ps2dev.serio->phys); |
|
|
|
if (psmouse->cleanup) |
|
psmouse->cleanup(psmouse); |
|
|
|
/* |
|
* Reset the mouse to defaults (bare PS/2 protocol). |
|
*/ |
|
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
|
|
|
/* |
|
* 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 = serio_get_drvdata(serio); |
|
struct psmouse *parent = NULL; |
|
|
|
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); |
|
|
|
if (psmouse->dev) |
|
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) |
|
{ |
|
const struct psmouse_protocol *selected_proto; |
|
struct input_dev *input_dev = psmouse->dev; |
|
enum psmouse_type type; |
|
|
|
input_dev->dev.parent = &psmouse->ps2dev.serio->dev; |
|
|
|
if (proto && (proto->detect || proto->init)) { |
|
psmouse_apply_defaults(psmouse); |
|
|
|
if (proto->detect && proto->detect(psmouse, true) < 0) |
|
return -1; |
|
|
|
if (proto->init && proto->init(psmouse) < 0) |
|
return -1; |
|
|
|
selected_proto = proto; |
|
} else { |
|
type = psmouse_extensions(psmouse, psmouse_max_proto, true); |
|
selected_proto = psmouse_protocol_by_type(type); |
|
} |
|
|
|
psmouse->protocol = selected_proto; |
|
|
|
/* |
|
* 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", |
|
selected_proto->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->protocol->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_DELAYED_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; |
|
|
|
/* give PT device some time to settle down before probing */ |
|
if (serio->id.type == SERIO_PS_PSTHRU) |
|
usleep_range(10000, 15000); |
|
|
|
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); |
|
|
|
if (!psmouse->protocol->smbus_companion) { |
|
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
|
psmouse_initialize(psmouse); |
|
|
|
error = input_register_device(input_dev); |
|
if (error) |
|
goto err_protocol_disconnect; |
|
} else { |
|
/* Smbus companion will be reporting events, not us. */ |
|
input_free_device(input_dev); |
|
psmouse->dev = input_dev = NULL; |
|
} |
|
|
|
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; |
|
|
|
/* |
|
* PS/2 devices having SMBus companions should stay disabled |
|
* on PS/2 side, in order to have SMBus part operable. |
|
*/ |
|
if (!psmouse->protocol->smbus_companion) |
|
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); |
|
if (input_dev) { |
|
input_unregister_device(input_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, bool fast_reconnect) |
|
{ |
|
struct psmouse *psmouse = serio_get_drvdata(serio); |
|
struct psmouse *parent = NULL; |
|
int (*reconnect_handler)(struct psmouse *); |
|
enum psmouse_type type; |
|
int rc = -1; |
|
|
|
mutex_lock(&psmouse_mutex); |
|
|
|
if (fast_reconnect) { |
|
reconnect_handler = psmouse->fast_reconnect; |
|
if (!reconnect_handler) { |
|
rc = -ENOENT; |
|
goto out_unlock; |
|
} |
|
} else { |
|
reconnect_handler = psmouse->reconnect; |
|
} |
|
|
|
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 (reconnect_handler) { |
|
if (reconnect_handler(psmouse)) |
|
goto out; |
|
} else { |
|
psmouse_reset(psmouse); |
|
|
|
if (psmouse_probe(psmouse) < 0) |
|
goto out; |
|
|
|
type = psmouse_extensions(psmouse, psmouse_max_proto, false); |
|
if (psmouse->protocol->type != type) |
|
goto out; |
|
} |
|
|
|
/* |
|
* OK, the device type (and capabilities) match the old one, |
|
* we can continue using it, complete initialization |
|
*/ |
|
if (!psmouse->protocol->smbus_companion) { |
|
psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
|
psmouse_initialize(psmouse); |
|
} |
|
|
|
if (parent && parent->pt_activate) |
|
parent->pt_activate(parent); |
|
|
|
/* |
|
* PS/2 devices having SMBus companions should stay disabled |
|
* on PS/2 side, in order to have SMBus part operable. |
|
*/ |
|
if (!psmouse->protocol->smbus_companion) |
|
psmouse_activate(psmouse); |
|
|
|
rc = 0; |
|
|
|
out: |
|
/* If this is a pass-through port the parent waits to be activated */ |
|
if (parent) |
|
psmouse_activate(parent); |
|
|
|
out_unlock: |
|
mutex_unlock(&psmouse_mutex); |
|
return rc; |
|
} |
|
|
|
static int psmouse_reconnect(struct serio *serio) |
|
{ |
|
return __psmouse_reconnect(serio, false); |
|
} |
|
|
|
static int psmouse_fast_reconnect(struct serio *serio) |
|
{ |
|
return __psmouse_reconnect(serio, true); |
|
} |
|
|
|
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, |
|
.fast_reconnect = psmouse_fast_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 = serio_get_drvdata(serio); |
|
|
|
if (psmouse->protocol->smbus_companion && |
|
devattr != &psmouse_attr_protocol.dattr) |
|
return -ENOENT; |
|
|
|
return attr->show(psmouse, attr->data, buf); |
|
} |
|
|
|
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 = mutex_lock_interruptible(&psmouse_mutex); |
|
if (retval) |
|
goto out; |
|
|
|
psmouse = serio_get_drvdata(serio); |
|
|
|
if (psmouse->protocol->smbus_companion && |
|
devattr != &psmouse_attr_protocol.dattr) { |
|
retval = -ENOENT; |
|
goto out_unlock; |
|
} |
|
|
|
if (attr->protect) { |
|
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); |
|
} |
|
|
|
if (!psmouse->protocol->smbus_companion) |
|
psmouse_deactivate(psmouse); |
|
} |
|
|
|
retval = attr->set(psmouse, attr->data, buf, count); |
|
|
|
if (attr->protect) { |
|
if (retval != -ENODEV && !psmouse->protocol->smbus_companion) |
|
psmouse_activate(psmouse); |
|
|
|
if (parent) |
|
psmouse_activate(parent); |
|
} |
|
|
|
out_unlock: |
|
mutex_unlock(&psmouse_mutex); |
|
out: |
|
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 int value; |
|
int err; |
|
|
|
err = kstrtouint(buf, 10, &value); |
|
if (err) |
|
return err; |
|
|
|
*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->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->protocol == proto) |
|
return count; |
|
|
|
new_dev = input_allocate_device(); |
|
if (!new_dev) |
|
return -ENOMEM; |
|
|
|
while (!list_empty(&serio->children)) { |
|
if (++retry > 3) { |
|
psmouse_warn(psmouse, |
|
"failed to destroy children ports, protocol change aborted.\n"); |
|
input_free_device(new_dev); |
|
return -EIO; |
|
} |
|
|
|
mutex_unlock(&psmouse_mutex); |
|
serio_unregister_child_port(serio); |
|
mutex_lock(&psmouse_mutex); |
|
|
|
if (serio->drv != &psmouse_drv) { |
|
input_free_device(new_dev); |
|
return -ENODEV; |
|
} |
|
|
|
if (psmouse->protocol == proto) { |
|
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; |
|
|
|
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); |
|
|
|
if (psmouse->protocol->smbus_companion) { |
|
input_free_device(psmouse->dev); |
|
psmouse->dev = NULL; |
|
} else { |
|
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; |
|
} |
|
} |
|
|
|
if (old_dev) |
|
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 int value; |
|
int err; |
|
|
|
err = kstrtouint(buf, 10, &value); |
|
if (err) |
|
return err; |
|
|
|
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 int value; |
|
int err; |
|
|
|
err = kstrtouint(buf, 10, &value); |
|
if (err) |
|
return err; |
|
|
|
psmouse->set_resolution(psmouse, value); |
|
return count; |
|
} |
|
|
|
|
|
static int psmouse_set_maxproto(const char *val, const 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, const 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; |
|
|
|
lifebook_module_init(); |
|
synaptics_module_init(); |
|
hgpk_module_init(); |
|
|
|
err = psmouse_smbus_module_init(); |
|
if (err) |
|
return err; |
|
|
|
kpsmoused_wq = alloc_ordered_workqueue("kpsmoused", 0); |
|
if (!kpsmoused_wq) { |
|
pr_err("failed to create kpsmoused workqueue\n"); |
|
err = -ENOMEM; |
|
goto err_smbus_exit; |
|
} |
|
|
|
err = serio_register_driver(&psmouse_drv); |
|
if (err) |
|
goto err_destroy_wq; |
|
|
|
return 0; |
|
|
|
err_destroy_wq: |
|
destroy_workqueue(kpsmoused_wq); |
|
err_smbus_exit: |
|
psmouse_smbus_module_exit(); |
|
return err; |
|
} |
|
|
|
static void __exit psmouse_exit(void) |
|
{ |
|
serio_unregister_driver(&psmouse_drv); |
|
destroy_workqueue(kpsmoused_wq); |
|
psmouse_smbus_module_exit(); |
|
} |
|
|
|
module_init(psmouse_init); |
|
module_exit(psmouse_exit);
|
|
|