diff options
Diffstat (limited to 'drivers/input/mouse/psmouse-base.c')
| -rw-r--r-- | drivers/input/mouse/psmouse-base.c | 770 |
1 files changed, 375 insertions, 395 deletions
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c index ad18dab0ac47..b9e4ee34c132 100644 --- a/drivers/input/mouse/psmouse-base.c +++ b/drivers/input/mouse/psmouse-base.c @@ -119,6 +119,7 @@ struct psmouse_protocol { enum psmouse_type type; bool maxproto; bool ignore_parity; /* Protocol should ignore parity errors from KBC */ + bool try_passthru; /* Try protocol also on passthrough ports */ const char *name; const char *alias; int (*detect)(struct psmouse *, bool); @@ -129,7 +130,6 @@ struct psmouse_protocol { * 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; @@ -138,22 +138,16 @@ psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) if (psmouse->pktcnt < psmouse->pktsize) return PSMOUSE_GOOD_DATA; -/* - * Full packet accumulated, process it - */ + /* Full packet accumulated, process it */ -/* - * Scroll wheel on IntelliMice, scroll buttons on NetMice - */ - - if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) + switch (psmouse->type) { + case PSMOUSE_IMPS: + /* IntelliMouse has scroll wheel */ input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); + break; -/* - * Scroll wheel and buttons on IntelliMouse Explorer - */ - - if (psmouse->type == PSMOUSE_IMEX) { + case PSMOUSE_IMEX: + /* Scroll wheel and buttons on IntelliMouse Explorer */ 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)); @@ -168,39 +162,42 @@ psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); break; } - } + break; -/* - * Extra buttons on Genius NewNet 3D - */ + case PSMOUSE_GENPS: + /* Report scroll buttons on NetMice */ + input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); - if (psmouse->type == PSMOUSE_GENPS) { + /* Extra buttons on Genius NewNet 3D */ input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); - } + break; -/* - * Extra button on ThinkingMouse - */ - if (psmouse->type == PSMOUSE_THINKPS) { + case PSMOUSE_THINKPS: + /* Extra button on ThinkingMouse */ input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); - /* Without this bit of weirdness moving up gives wildly high Y changes. */ + + /* + * Without this bit of weirdness moving up gives wildly + * high Y changes. + */ packet[1] |= (packet[0] & 0x40) << 1; - } + break; -/* - * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first - * byte. - */ - if (psmouse->type == PSMOUSE_CORTRON) { + case PSMOUSE_CORTRON: + /* + * Cortron PS2 Trackball reports SIDE button in the + * 4th bit of the first byte. + */ input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1); packet[0] |= 0x08; - } + break; -/* - * Generic PS/2 Mouse - */ + default: + break; + } + /* 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); @@ -222,7 +219,6 @@ void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work, /* * __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; @@ -231,13 +227,11 @@ static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_sta 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); @@ -249,7 +243,6 @@ void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) * 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); @@ -292,7 +285,6 @@ static int psmouse_handle_byte(struct psmouse *psmouse) * 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) { @@ -335,9 +327,8 @@ static irqreturn_t psmouse_interrupt(struct serio *serio, } psmouse->packet[psmouse->pktcnt++] = data; -/* - * Check if this is a new device announcement (0xAA 0x00) - */ + + /* 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; @@ -351,9 +342,8 @@ static irqreturn_t psmouse_interrupt(struct serio *serio, serio_reconnect(serio); goto out; } -/* - * Not a new device, try processing first byte normally - */ + + /* Not a new device, try processing first byte normally */ psmouse->pktcnt = 1; if (psmouse_handle_byte(psmouse)) goto out; @@ -361,9 +351,10 @@ static irqreturn_t psmouse_interrupt(struct serio *serio, psmouse->packet[psmouse->pktcnt++] = data; } -/* - * See if we need to force resync because mouse was idle for too long - */ + /* + * 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)) { @@ -380,7 +371,6 @@ static irqreturn_t psmouse_interrupt(struct serio *serio, 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 @@ -404,7 +394,6 @@ int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) return 0; } - /* * psmouse_reset() resets the mouse into power-on state. */ @@ -424,7 +413,6 @@ int psmouse_reset(struct psmouse *psmouse) /* * 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 }; @@ -441,7 +429,6 @@ void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) /* * 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 }; @@ -457,7 +444,6 @@ static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) /* * Here we set the mouse scaling. */ - static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale) { ps2_command(&psmouse->ps2dev, NULL, @@ -468,7 +454,6 @@ static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale) /* * 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, @@ -602,7 +587,7 @@ static int im_explorer_detect(struct psmouse *psmouse, bool set_properties) if (param[0] != 4) return -1; -/* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ + /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ param[0] = 200; ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); param[0] = 80; @@ -672,10 +657,10 @@ static int ps2bare_detect(struct psmouse *psmouse, bool set_properties) 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. - */ + /* + * 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); } @@ -699,284 +684,6 @@ static int cortron_detect(struct psmouse *psmouse, bool set_properties) 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); - - __set_bit(INPUT_PROP_POINTER, input_dev->propbit); - - 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->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; - -/* Always check for focaltech, this is safe as it uses pnp-id matching */ - if (psmouse_do_detect(focaltech_detect, psmouse, set_properties) == 0) { - if (max_proto > PSMOUSE_IMEX) { - if (!set_properties || focaltech_init(psmouse) == 0) { - if (IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH)) - return PSMOUSE_FOCALTECH; - /* - * Note that we need to also restrict - * psmouse_max_proto so that psmouse_initialize() - * does not try to reset rate and resolution, - * because even that upsets the device. - */ - psmouse_max_proto = PSMOUSE_PS2; - return PSMOUSE_PS2; - } - } - } - -/* - * 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; - } - } - - if (psmouse_do_detect(vmmouse_detect, psmouse, set_properties) == 0) { - if (max_proto > PSMOUSE_IMEX) { - if (!set_properties || vmmouse_init(psmouse) == 0) - return PSMOUSE_VMMOUSE; - } - } - -/* - * 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 (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) && - (!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 Cypress Trackpad. - * Must try it before Finger Sensing Pad because Finger Sensing Pad probe - * upsets some modules of Cypress Trackpads. - */ - if (max_proto > PSMOUSE_IMEX && - cypress_detect(psmouse, set_properties) == 0) { - if (IS_ENABLED(CONFIG_MOUSE_PS2_CYPRESS)) { - if (cypress_init(psmouse) == 0) - return PSMOUSE_CYPRESS; - - /* - * Finger Sensing Pad probe upsets some modules of - * Cypress Trackpad, must avoid Finger Sensing Pad - * probe if Cypress Trackpad device detected. - */ - return PSMOUSE_PS2; - } - - max_proto = PSMOUSE_IMEX; - } - -/* - * 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, @@ -985,13 +692,14 @@ static const struct psmouse_protocol psmouse_protocols[] = { .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_init, + .detect = ps2pp_detect, }, #endif { @@ -1022,6 +730,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .maxproto = true, .ignore_parity = true, .detect = intellimouse_detect, + .try_passthru = true, }, { .type = PSMOUSE_IMEX, @@ -1030,6 +739,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .maxproto = true, .ignore_parity = true, .detect = im_explorer_detect, + .try_passthru = true, }, #ifdef CONFIG_MOUSE_PS2_SYNAPTICS { @@ -1061,6 +771,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .type = PSMOUSE_LIFEBOOK, .name = "LBPS/2", .alias = "lifebook", + .detect = lifebook_detect, .init = lifebook_init, }, #endif @@ -1070,6 +781,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { .name = "TPPS/2", .alias = "trackpoint", .detect = trackpoint_detect, + .try_passthru = true, }, #endif #ifdef CONFIG_MOUSE_PS2_TOUCHKIT @@ -1138,7 +850,7 @@ static const struct psmouse_protocol psmouse_protocols[] = { }, }; -static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) +static const struct psmouse_protocol *__psmouse_protocol_by_type(enum psmouse_type type) { int i; @@ -1146,6 +858,17 @@ static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type 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]; } @@ -1166,23 +889,288 @@ static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, 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; + + 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); + + __set_bit(INPUT_PROP_POINTER, input_dev->propbit); + + 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->disconnect = NULL; + psmouse->cleanup = NULL; + psmouse->pt_activate = NULL; + psmouse->pt_deactivate = NULL; +} + +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->ps2dev.serio->id.type == SERIO_PS_PSTHRU && + !proto->try_passthru) { + return false; + } + + if (set_properties) + psmouse_apply_defaults(psmouse); + + if (proto->detect(psmouse, set_properties) != 0) + 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_probe() probes for a PS/2 mouse. + * 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; + + /* + * Always check for focaltech, this is safe as it uses pnp-id + * matching. + */ + if (psmouse_try_protocol(psmouse, PSMOUSE_FOCALTECH, + &max_proto, set_properties, false)) { + 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_try_protocol(psmouse, PSMOUSE_SYNAPTICS, &max_proto, + set_properties, false)) { + 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) && + (!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 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, true)) { + return PSMOUSE_ELANTECH; + } + + 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; 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. - */ - + /* + * 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; @@ -1191,10 +1179,10 @@ static int psmouse_probe(struct psmouse *psmouse) param[0] != 0x04 && param[0] != 0xff) return -1; -/* - * Then we reset and disable the mouse so that it doesn't generate events. - */ - + /* + * 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); @@ -1205,13 +1193,11 @@ static int psmouse_probe(struct psmouse *psmouse) /* * 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. - */ - + /* + * 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); @@ -1222,7 +1208,6 @@ static void psmouse_initialize(struct psmouse *psmouse) /* * 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)) { @@ -1236,10 +1221,9 @@ int psmouse_activate(struct psmouse *psmouse) } /* - * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion - * reports from it unless we explicitly request it. + * 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)) { @@ -1252,11 +1236,9 @@ int psmouse_deactivate(struct psmouse *psmouse) return 0; } - /* * psmouse_resync() attempts to re-validate current protocol. */ - static void psmouse_resync(struct work_struct *work) { struct psmouse *parent = NULL, *psmouse = @@ -1276,16 +1258,16 @@ static void psmouse_resync(struct work_struct *work) 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. - */ + /* + * 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)) { @@ -1294,13 +1276,13 @@ static void psmouse_resync(struct work_struct *work) } 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. - */ + /* + * 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; @@ -1317,11 +1299,12 @@ static void psmouse_resync(struct work_struct *work) 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. - */ + + /* + * 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; @@ -1353,7 +1336,6 @@ static void psmouse_resync(struct work_struct *work) /* * psmouse_cleanup() resets the mouse into power-on state. */ - static void psmouse_cleanup(struct serio *serio) { struct psmouse *psmouse = serio_get_drvdata(serio); @@ -1378,15 +1360,15 @@ static void psmouse_cleanup(struct serio *serio) if (psmouse->cleanup) psmouse->cleanup(psmouse); -/* - * Reset the mouse to defaults (bare PS/2 protocol). - */ + /* + * 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. - */ + /* + * 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) { @@ -1402,7 +1384,6 @@ static void psmouse_cleanup(struct serio *serio) /* * psmouse_disconnect() closes and frees. */ - static void psmouse_disconnect(struct serio *serio) { struct psmouse *psmouse, *parent = NULL; @@ -1602,7 +1583,6 @@ static int psmouse_connect(struct serio *serio, struct serio_driver *drv) goto out; } - static int psmouse_reconnect(struct serio *serio) { struct psmouse *psmouse = serio_get_drvdata(serio); |