diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/mouse/psmouse-base.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/mouse/psmouse-base.c | 1817 |
1 files changed, 0 insertions, 1817 deletions
diff --git a/ANDROID_3.4.5/drivers/input/mouse/psmouse-base.c b/ANDROID_3.4.5/drivers/input/mouse/psmouse-base.c deleted file mode 100644 index 22fe2547..00000000 --- a/ANDROID_3.4.5/drivers/input/mouse/psmouse-base.c +++ /dev/null @@ -1,1817 +0,0 @@ -/* - * 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. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt -#define psmouse_fmt(fmt) fmt - -#include <linux/delay.h> -#include <linux/module.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 <linux/mutex.h> - -#include "psmouse.h" -#include "synaptics.h" -#include "logips2pp.h" -#include "alps.h" -#include "hgpk.h" -#include "lifebook.h" -#include "trackpoint.h" -#include "touchkit_ps2.h" -#include "elantech.h" -#include "sentelic.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, const struct kernel_param *); -static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp); -static struct kernel_param_ops param_ops_proto_abbrev = { - .set = psmouse_set_maxproto, - .get = psmouse_get_maxproto, -}; -#define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) -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 bool 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 = 5; -module_param_named(resetafter, psmouse_resetafter, uint, 0644); -MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); - -static unsigned int psmouse_resync_time; -module_param_named(resync_time, psmouse_resync_time, uint, 0644); -MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); - -PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, - NULL, - psmouse_attr_show_protocol, psmouse_attr_set_protocol); -PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, - (void *) offsetof(struct psmouse, rate), - psmouse_show_int_attr, psmouse_attr_set_rate); -PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, - (void *) offsetof(struct psmouse, resolution), - psmouse_show_int_attr, psmouse_attr_set_resolution); -PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, - (void *) offsetof(struct psmouse, resetafter), - psmouse_show_int_attr, psmouse_set_int_attr); -PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, - (void *) offsetof(struct psmouse, resync_time), - psmouse_show_int_attr, psmouse_set_int_attr); - -static struct attribute *psmouse_attributes[] = { - &psmouse_attr_protocol.dattr.attr, - &psmouse_attr_rate.dattr.attr, - &psmouse_attr_resolution.dattr.attr, - &psmouse_attr_resetafter.dattr.attr, - &psmouse_attr_resync_time.dattr.attr, - NULL -}; - -static struct attribute_group psmouse_attribute_group = { - .attrs = psmouse_attributes, -}; - -/* - * psmouse_mutex protects all operations changing state of mouse - * (connecting, disconnecting, changing rate or resolution via - * sysfs). We could use a per-device semaphore but since there - * rarely more than one PS/2 mouse connected and since semaphore - * is taken in "slow" paths it is not worth it. - */ -static DEFINE_MUTEX(psmouse_mutex); - -static struct workqueue_struct *kpsmoused_wq; - -struct psmouse_protocol { - enum psmouse_type type; - bool maxproto; - bool ignore_parity; /* Protocol should ignore parity errors from KBC */ - const char *name; - const char *alias; - int (*detect)(struct psmouse *, bool); - 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. - */ - -psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) -{ - 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 - */ - -/* - * 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) { - switch (packet[3] & 0xC0) { - case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ - input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); - break; - case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ - input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); - break; - case 0x00: - case 0xC0: - 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); - break; - } - } - -/* - * 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; - } - -/* - * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first - * byte. - */ - if (psmouse->type == PSMOUSE_CORTRON) { - input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1); - packet[0] |= 0x08; - } - -/* - * 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; -} - -void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work, - unsigned long delay) -{ - queue_delayed_work(kpsmoused_wq, work, delay); -} - -/* - * __psmouse_set_state() sets new psmouse state and resets all flags. - */ - -static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) -{ - psmouse->state = new_state; - psmouse->pktcnt = psmouse->out_of_sync_cnt = 0; - psmouse->ps2dev.flags = 0; - psmouse->last = jiffies; -} - - -/* - * psmouse_set_state() sets new psmouse state and resets all flags and - * counters while holding serio lock so fighting with interrupt handler - * is not a concern. - */ - -void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) -{ - serio_pause_rx(psmouse->ps2dev.serio); - __psmouse_set_state(psmouse, new_state); - serio_continue_rx(psmouse->ps2dev.serio); -} - -/* - * psmouse_handle_byte() processes one byte of the input data stream - * by calling corresponding protocol handler. - */ - -static int psmouse_handle_byte(struct psmouse *psmouse) -{ - psmouse_ret_t rc = psmouse->protocol_handler(psmouse); - - switch (rc) { - case PSMOUSE_BAD_DATA: - if (psmouse->state == PSMOUSE_ACTIVATED) { - psmouse_warn(psmouse, - "%s at %s lost sync at byte %d\n", - psmouse->name, psmouse->phys, - psmouse->pktcnt); - if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { - __psmouse_set_state(psmouse, PSMOUSE_IGNORE); - psmouse_notice(psmouse, - "issuing reconnect request\n"); - serio_reconnect(psmouse->ps2dev.serio); - return -1; - } - } - psmouse->pktcnt = 0; - break; - - case PSMOUSE_FULL_PACKET: - psmouse->pktcnt = 0; - if (psmouse->out_of_sync_cnt) { - psmouse->out_of_sync_cnt = 0; - psmouse_notice(psmouse, - "%s at %s - driver resynced.\n", - psmouse->name, psmouse->phys); - } - break; - - case PSMOUSE_GOOD_DATA: - break; - } - return 0; -} - -/* - * psmouse_interrupt() handles incoming characters, either passing them - * for normal processing or gathering them as command response. - */ - -static irqreturn_t psmouse_interrupt(struct serio *serio, - unsigned char data, unsigned int flags) -{ - struct psmouse *psmouse = serio_get_drvdata(serio); - - if (psmouse->state == PSMOUSE_IGNORE) - goto out; - - if (unlikely((flags & SERIO_TIMEOUT) || - ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) { - - if (psmouse->state == PSMOUSE_ACTIVATED) - psmouse_warn(psmouse, - "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_RESYNCING) - goto out; - - if (psmouse->state == PSMOUSE_ACTIVATED && - psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { - psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n", - psmouse->name, psmouse->phys, psmouse->pktcnt); - psmouse->badbyte = psmouse->packet[0]; - __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); - psmouse_queue_work(psmouse, &psmouse->resync_work, 0); - goto out; - } - - psmouse->packet[psmouse->pktcnt++] = data; -/* - * Check if this is a new device announcement (0xAA 0x00) - */ - if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { - if (psmouse->pktcnt == 1) { - psmouse->last = jiffies; - goto out; - } - - if (psmouse->packet[1] == PSMOUSE_RET_ID || - (psmouse->type == PSMOUSE_HGPK && - psmouse->packet[1] == PSMOUSE_RET_BAT)) { - __psmouse_set_state(psmouse, PSMOUSE_IGNORE); - serio_reconnect(serio); - goto out; - } -/* - * Not a new device, try processing first byte normally - */ - psmouse->pktcnt = 1; - if (psmouse_handle_byte(psmouse)) - goto out; - - psmouse->packet[psmouse->pktcnt++] = data; - } - -/* - * See if we need to force resync because mouse was idle for too long - */ - if (psmouse->state == PSMOUSE_ACTIVATED && - psmouse->pktcnt == 1 && psmouse->resync_time && - time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { - psmouse->badbyte = psmouse->packet[0]; - __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); - psmouse_queue_work(psmouse, &psmouse->resync_work, 0); - goto out; - } - - psmouse->last = jiffies; - psmouse_handle_byte(psmouse); - - 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; -} - -/* - * Here we set the mouse resolution. - */ - -void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) -{ - static const unsigned char params[] = { 0, 1, 2, 2, 3 }; - unsigned char p; - - if (resolution == 0 || resolution > 200) - resolution = 200; - - p = params[resolution / 50]; - ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); - psmouse->resolution = 25 << p; -} - -/* - * Here we set the mouse report rate. - */ - -static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) -{ - static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; - unsigned char r; - int i = 0; - - while (rates[i] > rate) i++; - r = rates[i]; - ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); - psmouse->rate = r; -} - -/* - * psmouse_poll() - default poll handler. Everyone except for ALPS uses it. - */ - -static int psmouse_poll(struct psmouse *psmouse) -{ - return ps2_command(&psmouse->ps2dev, psmouse->packet, - PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); -} - - -/* - * Genius NetMouse magic init. - */ -static int genius_detect(struct psmouse *psmouse, bool 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_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; - 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, bool 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; - -/* 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; - unsigned char param[2]; - static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; - int i; - - param[0] = 10; - ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); - param[0] = 0; - ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); - for (i = 0; i < ARRAY_SIZE(seq); i++) { - param[0] = seq[i]; - ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); - } - ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); - - if (param[0] != 2) - return -1; - - if (set_properties) { - __set_bit(BTN_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. - */ - __set_bit(BTN_MIDDLE, psmouse->dev->keybit); - } - - 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; -} - -/* - * Apply default settings to the psmouse structure. Most of them will - * be overridden by individual protocol initialization routines. - */ - -static void psmouse_apply_defaults(struct psmouse *psmouse) -{ - struct input_dev *input_dev = psmouse->dev; - - memset(input_dev->evbit, 0, sizeof(input_dev->evbit)); - memset(input_dev->keybit, 0, sizeof(input_dev->keybit)); - memset(input_dev->relbit, 0, sizeof(input_dev->relbit)); - memset(input_dev->absbit, 0, sizeof(input_dev->absbit)); - memset(input_dev->mscbit, 0, sizeof(input_dev->mscbit)); - - __set_bit(EV_KEY, input_dev->evbit); - __set_bit(EV_REL, input_dev->evbit); - - __set_bit(BTN_LEFT, input_dev->keybit); - __set_bit(BTN_RIGHT, input_dev->keybit); - - __set_bit(REL_X, input_dev->relbit); - __set_bit(REL_Y, input_dev->relbit); - - psmouse->set_rate = psmouse_set_rate; - psmouse->set_resolution = psmouse_set_resolution; - psmouse->poll = psmouse_poll; - psmouse->protocol_handler = psmouse_process_byte; - psmouse->pktsize = 3; - psmouse->reconnect = NULL; - psmouse->disconnect = NULL; - psmouse->cleanup = NULL; - psmouse->pt_activate = NULL; - psmouse->pt_deactivate = NULL; -} - -/* - * Apply default settings to the psmouse structure and call specified - * protocol detection or initialization routine. - */ -static int psmouse_do_detect(int (*detect)(struct psmouse *psmouse, - bool set_properties), - struct psmouse *psmouse, bool set_properties) -{ - if (set_properties) - psmouse_apply_defaults(psmouse); - - return detect(psmouse, set_properties); -} - -/* - * psmouse_extensions() probes for any extensions to the basic PS/2 protocol - * the mouse may have. - */ - -static int psmouse_extensions(struct psmouse *psmouse, - unsigned int max_proto, bool set_properties) -{ - bool synaptics_hardware = false; - -/* - * We always check for lifebook because it does not disturb mouse - * (it only checks DMI information). - */ - if (psmouse_do_detect(lifebook_detect, psmouse, set_properties) == 0) { - if (max_proto > PSMOUSE_IMEX) { - if (!set_properties || lifebook_init(psmouse) == 0) - return PSMOUSE_LIFEBOOK; - } - } - -/* - * Try Kensington ThinkingMouse (we try first, because synaptics probe - * upsets the thinkingmouse). - */ - - if (max_proto > PSMOUSE_IMEX && - psmouse_do_detect(thinking_detect, psmouse, set_properties) == 0) { - return PSMOUSE_THINKPS; - } - -/* - * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol - * support is disabled in config - we need to know if it is synaptics so we - * can reset it properly after probing for intellimouse. - */ - if (max_proto > PSMOUSE_PS2 && - psmouse_do_detect(synaptics_detect, psmouse, set_properties) == 0) { - synaptics_hardware = true; - - if (max_proto > PSMOUSE_IMEX) { -/* - * Try activating protocol, but check if support is enabled first, since - * we try detecting Synaptics even when protocol is disabled. - */ - if (synaptics_supported() && - (!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 (psmouse_do_detect(alps_detect, - psmouse, set_properties) == 0) { - if (!set_properties || alps_init(psmouse) == 0) - return PSMOUSE_ALPS; -/* - * Init failed, try basic relative protocols - */ - max_proto = PSMOUSE_IMEX; - } - } - -/* - * Try OLPC HGPK touchpad. - */ - if (max_proto > PSMOUSE_IMEX && - psmouse_do_detect(hgpk_detect, psmouse, set_properties) == 0) { - if (!set_properties || hgpk_init(psmouse) == 0) - return PSMOUSE_HGPK; -/* - * Init failed, try basic relative protocols - */ - max_proto = PSMOUSE_IMEX; - } - -/* - * Try Elantech touchpad. - */ - if (max_proto > PSMOUSE_IMEX && - psmouse_do_detect(elantech_detect, psmouse, set_properties) == 0) { - if (!set_properties || elantech_init(psmouse) == 0) - return PSMOUSE_ELANTECH; -/* - * Init failed, try basic relative protocols - */ - max_proto = PSMOUSE_IMEX; - } - - if (max_proto > PSMOUSE_IMEX) { - if (psmouse_do_detect(genius_detect, - psmouse, set_properties) == 0) - return PSMOUSE_GENPS; - - if (psmouse_do_detect(ps2pp_init, - psmouse, set_properties) == 0) - return PSMOUSE_PS2PP; - - if (psmouse_do_detect(trackpoint_detect, - psmouse, set_properties) == 0) - return PSMOUSE_TRACKPOINT; - - if (psmouse_do_detect(touchkit_ps2_detect, - psmouse, set_properties) == 0) - return PSMOUSE_TOUCHKIT_PS2; - } - -/* - * Try Finger Sensing Pad. We do it here because its probe upsets - * Trackpoint devices (causing TP_READ_ID command to time out). - */ - if (max_proto > PSMOUSE_IMEX) { - if (psmouse_do_detect(fsp_detect, - psmouse, set_properties) == 0) { - if (!set_properties || fsp_init(psmouse) == 0) - return PSMOUSE_FSP; -/* - * Init failed, try basic relative protocols - */ - max_proto = PSMOUSE_IMEX; - } - } - -/* - * Reset to defaults in case the device got confused by extended - * protocol probes. Note that we follow up with full reset because - * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS. - */ - ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); - psmouse_reset(psmouse); - - if (max_proto >= PSMOUSE_IMEX && - psmouse_do_detect(im_explorer_detect, - psmouse, set_properties) == 0) { - return PSMOUSE_IMEX; - } - - if (max_proto >= PSMOUSE_IMPS && - psmouse_do_detect(intellimouse_detect, - psmouse, set_properties) == 0) { - return PSMOUSE_IMPS; - } - -/* - * Okay, all failed, we have a standard mouse here. The number of the buttons - * is still a question, though. We assume 3. - */ - psmouse_do_detect(ps2bare_detect, psmouse, set_properties); - - if (synaptics_hardware) { -/* - * We detected Synaptics hardware but it did not respond to IMPS/2 probes. - * We need to reset the touchpad because if there is a track point on the - * pass through port it could get disabled while probing for protocol - * extensions. - */ - psmouse_reset(psmouse); - } - - return PSMOUSE_PS2; -} - -static const struct psmouse_protocol psmouse_protocols[] = { - { - .type = PSMOUSE_PS2, - .name = "PS/2", - .alias = "bare", - .maxproto = true, - .ignore_parity = true, - .detect = ps2bare_detect, - }, -#ifdef CONFIG_MOUSE_PS2_LOGIPS2PP - { - .type = PSMOUSE_PS2PP, - .name = "PS2++", - .alias = "logitech", - .detect = ps2pp_init, - }, -#endif - { - .type = PSMOUSE_THINKPS, - .name = "ThinkPS/2", - .alias = "thinkps", - .detect = thinking_detect, - }, - { - .type = PSMOUSE_GENPS, - .name = "GenPS/2", - .alias = "genius", - .detect = genius_detect, - }, - { - .type = PSMOUSE_IMPS, - .name = "ImPS/2", - .alias = "imps", - .maxproto = true, - .ignore_parity = true, - .detect = intellimouse_detect, - }, - { - .type = PSMOUSE_IMEX, - .name = "ImExPS/2", - .alias = "exps", - .maxproto = true, - .ignore_parity = true, - .detect = im_explorer_detect, - }, -#ifdef CONFIG_MOUSE_PS2_SYNAPTICS - { - .type = PSMOUSE_SYNAPTICS, - .name = "SynPS/2", - .alias = "synaptics", - .detect = synaptics_detect, - .init = synaptics_init, - }, - { - .type = PSMOUSE_SYNAPTICS_RELATIVE, - .name = "SynRelPS/2", - .alias = "synaptics-relative", - .detect = synaptics_detect, - .init = synaptics_init_relative, - }, -#endif -#ifdef CONFIG_MOUSE_PS2_ALPS - { - .type = PSMOUSE_ALPS, - .name = "AlpsPS/2", - .alias = "alps", - .detect = alps_detect, - .init = alps_init, - }, -#endif -#ifdef CONFIG_MOUSE_PS2_LIFEBOOK - { - .type = PSMOUSE_LIFEBOOK, - .name = "LBPS/2", - .alias = "lifebook", - .init = lifebook_init, - }, -#endif -#ifdef CONFIG_MOUSE_PS2_TRACKPOINT - { - .type = PSMOUSE_TRACKPOINT, - .name = "TPPS/2", - .alias = "trackpoint", - .detect = trackpoint_detect, - }, -#endif -#ifdef CONFIG_MOUSE_PS2_TOUCHKIT - { - .type = PSMOUSE_TOUCHKIT_PS2, - .name = "touchkitPS/2", - .alias = "touchkit", - .detect = touchkit_ps2_detect, - }, -#endif -#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, - }, -#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, - }, - { - .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]; - - WARN_ON(1); - return &psmouse_protocols[0]; -} - -static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) -{ - const struct psmouse_protocol *p; - int i; - - for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { - p = &psmouse_protocols[i]; - - if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || - (strlen(p->alias) == len && !strncmp(p->alias, name, len))) - return &psmouse_protocols[i]; - } - - return NULL; -} - - -/* - * psmouse_probe() probes for a PS/2 mouse. - */ - -static int psmouse_probe(struct psmouse *psmouse) -{ - struct ps2dev *ps2dev = &psmouse->ps2dev; - unsigned char param[2]; - -/* - * First, we check if it's a mouse. It should send 0x00 or 0x03 - * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. - * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent - * ID queries, probably due to a firmware bug. - */ - - param[0] = 0xa5; - if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) - return -1; - - if (param[0] != 0x00 && param[0] != 0x03 && - param[0] != 0x04 && param[0] != 0xff) - return -1; - -/* - * Then we reset and disable the mouse so that it doesn't generate events. - */ - - if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) - psmouse_warn(psmouse, "Failed to reset mouse on %s\n", - ps2dev->serio->phys); - - 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); - ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); - } -} - -/* - * 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) -{ - if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) { - psmouse_warn(psmouse, "Failed to deactivate mouse on %s\n", - psmouse->ps2dev.serio->phys); - return -1; - } - - 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, *parent = NULL; - - psmouse = serio_get_drvdata(serio); - - sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); - - mutex_lock(&psmouse_mutex); - - psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); - - /* make sure we don't have a resync in progress */ - mutex_unlock(&psmouse_mutex); - flush_workqueue(kpsmoused_wq); - mutex_lock(&psmouse_mutex); - - if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { - parent = serio_get_drvdata(serio->parent); - psmouse_deactivate(parent); - } - - if (psmouse->disconnect) - psmouse->disconnect(psmouse); - - if (parent && parent->pt_deactivate) - parent->pt_deactivate(parent); - - psmouse_set_state(psmouse, PSMOUSE_IGNORE); - - serio_close(serio); - serio_set_drvdata(serio, NULL); - input_unregister_device(psmouse->dev); - kfree(psmouse); - - if (parent) - psmouse_activate(parent); - - mutex_unlock(&psmouse_mutex); -} - -static int psmouse_switch_protocol(struct psmouse *psmouse, - const struct psmouse_protocol *proto) -{ - const struct psmouse_protocol *selected_proto; - struct input_dev *input_dev = psmouse->dev; - - 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; - - psmouse->type = proto->type; - selected_proto = proto; - } else { - psmouse->type = psmouse_extensions(psmouse, - psmouse_max_proto, true); - selected_proto = psmouse_protocol_by_type(psmouse->type); - } - - psmouse->ignore_parity = selected_proto->ignore_parity; - - /* - * 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->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; - - if (psmouse_probe(psmouse) < 0) { - error = -ENODEV; - goto err_close_serio; - } - - psmouse->rate = psmouse_rate; - psmouse->resolution = psmouse_resolution; - psmouse->resetafter = psmouse_resetafter; - psmouse->resync_time = parent ? 0 : psmouse_resync_time; - psmouse->smartscroll = psmouse_smartscroll; - - psmouse_switch_protocol(psmouse, NULL); - - psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); - psmouse_initialize(psmouse); - - error = input_register_device(psmouse->dev); - if (error) - goto err_protocol_disconnect; - - if (parent && parent->pt_activate) - parent->pt_activate(parent); - - error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); - if (error) - goto err_pt_deactivate; - - psmouse_activate(psmouse); - - out: - /* If this is a pass-through port the parent needs to be re-activated */ - if (parent) - psmouse_activate(parent); - - mutex_unlock(&psmouse_mutex); - return retval; - - err_pt_deactivate: - if (parent && parent->pt_deactivate) - parent->pt_deactivate(parent); - input_unregister_device(psmouse->dev); - input_dev = NULL; /* so we don't try to free it below */ - err_protocol_disconnect: - if (psmouse->disconnect) - psmouse->disconnect(psmouse); - psmouse_set_state(psmouse, PSMOUSE_IGNORE); - err_close_serio: - serio_close(serio); - err_clear_drvdata: - serio_set_drvdata(serio, NULL); - err_free: - input_free_device(input_dev); - kfree(psmouse); - - retval = error; - goto out; -} - - -static int psmouse_reconnect(struct serio *serio) -{ - struct psmouse *psmouse = serio_get_drvdata(serio); - struct psmouse *parent = NULL; - struct serio_driver *drv = serio->drv; - unsigned char type; - int rc = -1; - - if (!drv || !psmouse) { - psmouse_dbg(psmouse, - "reconnect request, but serio is disconnected, ignoring...\n"); - return -1; - } - - mutex_lock(&psmouse_mutex); - - if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { - parent = serio_get_drvdata(serio->parent); - psmouse_deactivate(parent); - } - - psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); - - if (psmouse->reconnect) { - if (psmouse->reconnect(psmouse)) - goto out; - } else { - psmouse_reset(psmouse); - - if (psmouse_probe(psmouse) < 0) - goto out; - - type = psmouse_extensions(psmouse, psmouse_max_proto, false); - if (psmouse->type != type) - goto out; - } - - /* - * OK, the device type (and capabilities) match the old one, - * we can continue using it, complete initialization - */ - psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); - - psmouse_initialize(psmouse); - - if (parent && parent->pt_activate) - parent->pt_activate(parent); - - psmouse_activate(psmouse); - rc = 0; - -out: - /* If this is a pass-through port the parent waits to be activated */ - if (parent) - psmouse_activate(parent); - - mutex_unlock(&psmouse_mutex); - return rc; -} - -static struct serio_device_id psmouse_serio_ids[] = { - { - .type = SERIO_8042, - .proto = SERIO_ANY, - .id = SERIO_ANY, - .extra = SERIO_ANY, - }, - { - .type = SERIO_PS_PSTHRU, - .proto = SERIO_ANY, - .id = SERIO_ANY, - .extra = SERIO_ANY, - }, - { 0 } -}; - -MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); - -static struct serio_driver psmouse_drv = { - .driver = { - .name = "psmouse", - }, - .description = DRIVER_DESC, - .id_table = psmouse_serio_ids, - .interrupt = psmouse_interrupt, - .connect = psmouse_connect, - .reconnect = psmouse_reconnect, - .disconnect = psmouse_disconnect, - .cleanup = psmouse_cleanup, -}; - -ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, - char *buf) -{ - struct serio *serio = to_serio_port(dev); - struct psmouse_attribute *attr = to_psmouse_attr(devattr); - struct psmouse *psmouse; - - psmouse = serio_get_drvdata(serio); - - 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 (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); - } - - psmouse_deactivate(psmouse); - } - - retval = attr->set(psmouse, attr->data, buf, count); - - if (attr->protect) { - if (retval != -ENODEV) - 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_by_type(psmouse->type)->name); -} - -static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) -{ - struct serio *serio = psmouse->ps2dev.serio; - struct psmouse *parent = NULL; - struct input_dev *old_dev, *new_dev; - const struct psmouse_protocol *proto, *old_proto; - int error; - int retry = 0; - - proto = psmouse_protocol_by_name(buf, count); - if (!proto) - return -EINVAL; - - if (psmouse->type == proto->type) - return count; - - new_dev = input_allocate_device(); - if (!new_dev) - return -ENOMEM; - - while (!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->type == proto->type) { - input_free_device(new_dev); - return count; /* switched by other thread */ - } - } - - if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { - parent = serio_get_drvdata(serio->parent); - if (parent->pt_deactivate) - parent->pt_deactivate(parent); - } - - old_dev = psmouse->dev; - old_proto = psmouse_protocol_by_type(psmouse->type); - - if (psmouse->disconnect) - psmouse->disconnect(psmouse); - - psmouse_set_state(psmouse, PSMOUSE_IGNORE); - - psmouse->dev = new_dev; - psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); - - if (psmouse_switch_protocol(psmouse, proto) < 0) { - psmouse_reset(psmouse); - /* default to PSMOUSE_PS2 */ - psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); - } - - psmouse_initialize(psmouse); - psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); - - error = input_register_device(psmouse->dev); - if (error) { - if (psmouse->disconnect) - psmouse->disconnect(psmouse); - - psmouse_set_state(psmouse, PSMOUSE_IGNORE); - input_free_device(new_dev); - psmouse->dev = old_dev; - psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); - psmouse_switch_protocol(psmouse, old_proto); - psmouse_initialize(psmouse); - psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); - - return error; - } - - input_unregister_device(old_dev); - - if (parent && parent->pt_activate) - parent->pt_activate(parent); - - return count; -} - -static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) -{ - unsigned 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", psmouse_protocol_by_type(type)->name); -} - -static int __init psmouse_init(void) -{ - int err; - - lifebook_module_init(); - synaptics_module_init(); - hgpk_module_init(); - - kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); - if (!kpsmoused_wq) { - pr_err("failed to create kpsmoused workqueue\n"); - return -ENOMEM; - } - - err = serio_register_driver(&psmouse_drv); - if (err) - destroy_workqueue(kpsmoused_wq); - - return err; -} - -static void __exit psmouse_exit(void) -{ - serio_unregister_driver(&psmouse_drv); - destroy_workqueue(kpsmoused_wq); -} - -module_init(psmouse_init); -module_exit(psmouse_exit); |