/* * Copyright © 2004-2007 Peter Osterlund * Copyright © 2008-2012 Red Hat, Inc. * * Permission to use, copy, modify, distribute, and sell this software * and its documentation for any purpose is hereby granted without * fee, provided that the above copyright notice appear in all copies * and that both that copyright notice and this permission notice * appear in supporting documentation, and that the name of Red Hat * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. Red * Hat makes no representations about the suitability of this software * for any purpose. It is provided "as is" without express or implied * warranty. * * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Authors: * Peter Osterlund (petero2@telia.com) */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "eventcomm.h" #include #include #include #include #include #include #include #include "synproto.h" #include "synapticsstr.h" #include #include #ifndef INPUT_PROP_BUTTONPAD #define INPUT_PROP_BUTTONPAD 0x02 #endif #ifndef INPUT_PROP_SEMI_MT #define INPUT_PROP_SEMI_MT 0x03 #endif #define SYSCALL(call) while (((call) == -1) && (errno == EINTR)) #define LONG_BITS (sizeof(long) * 8) #define NBITS(x) (((x) + LONG_BITS - 1) / LONG_BITS) #define OFF(x) ((x) % LONG_BITS) #define LONG(x) ((x) / LONG_BITS) #define TEST_BIT(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1) /** * Protocol-specific data. */ struct eventcomm_proto_data { /** * Do we need to grab the event device? * Note that in the current flow, this variable is always false and * exists for readability of the code. */ BOOL need_grab; int st_to_mt_offset[2]; double st_to_mt_scale[2]; struct mtdev *mtdev; int axis_map[MT_ABS_SIZE]; int cur_slot; ValuatorMask **last_mt_vals; int num_touches; }; struct eventcomm_proto_data * EventProtoDataAlloc(void) { struct eventcomm_proto_data *proto_data; proto_data = calloc(1, sizeof(struct eventcomm_proto_data)); if (!proto_data) return NULL; proto_data->st_to_mt_scale[0] = 1; proto_data->st_to_mt_scale[1] = 1; return proto_data; } static int last_mt_vals_slot(const SynapticsPrivate * priv) { struct eventcomm_proto_data *proto_data = (struct eventcomm_proto_data *) priv->proto_data; int value = proto_data->cur_slot - proto_data->mtdev->caps.slot.minimum; return value < priv->num_slots ? value : -1; } static void UninitializeTouch(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = (struct eventcomm_proto_data *) priv->proto_data; if (!priv->has_touch) return; if (proto_data->last_mt_vals) { int i; for (i = 0; i < priv->num_slots; i++) valuator_mask_free(&proto_data->last_mt_vals[i]); free(proto_data->last_mt_vals); proto_data->last_mt_vals = NULL; } mtdev_close_delete(proto_data->mtdev); proto_data->mtdev = NULL; proto_data->num_touches = 0; } static void InitializeTouch(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = (struct eventcomm_proto_data *) priv->proto_data; int i; if (!priv->has_touch) return; proto_data->mtdev = mtdev_new_open(pInfo->fd); if (!proto_data->mtdev) { xf86IDrvMsg(pInfo, X_WARNING, "failed to create mtdev instance, ignoring touch events\n"); return; } proto_data->cur_slot = proto_data->mtdev->caps.slot.value; proto_data->num_touches = 0; proto_data->last_mt_vals = calloc(priv->num_slots, sizeof(ValuatorMask *)); if (!proto_data->last_mt_vals) { xf86IDrvMsg(pInfo, X_WARNING, "failed to allocate MT last values mask array\n"); UninitializeTouch(pInfo); return; } for (i = 0; i < priv->num_slots; i++) { int j; proto_data->last_mt_vals[i] = valuator_mask_new(4 + priv->num_mt_axes); if (!proto_data->last_mt_vals[i]) { xf86IDrvMsg(pInfo, X_WARNING, "failed to allocate MT last values mask\n"); UninitializeTouch(pInfo); return; } /* Axes 0-4 are for X, Y, and scrolling. num_mt_axes does not include X * and Y. */ valuator_mask_set(proto_data->last_mt_vals[i], 0, 0); valuator_mask_set(proto_data->last_mt_vals[i], 1, 0); for (j = 0; j < priv->num_mt_axes; j++) valuator_mask_set(proto_data->last_mt_vals[i], 4 + j, 0); } } static Bool EventDeviceOnHook(InputInfoPtr pInfo, SynapticsParameters * para) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = (struct eventcomm_proto_data *) priv->proto_data; if (para->grab_event_device) { /* Try to grab the event device so that data don't leak to /dev/input/mice */ int ret; SYSCALL(ret = ioctl(pInfo->fd, EVIOCGRAB, (pointer) 1)); if (ret < 0) { xf86IDrvMsg(pInfo, X_WARNING, "can't grab event device, errno=%d\n", errno); return FALSE; } } proto_data->need_grab = FALSE; InitializeTouch(pInfo); return TRUE; } static Bool EventDeviceOffHook(InputInfoPtr pInfo) { UninitializeTouch(pInfo); SYSCALL(ioctl(pInfo->fd, EVIOCGRAB, (pointer) 0)); return Success; } /** * Test if the device on the file descriptior is recognized as touchpad * device. Required bits for touchpad recognition are: * - ABS_X + ABS_Y for absolute axes * - ABS_PRESSURE or BTN_TOUCH * - BTN_TOOL_FINGER * - BTN_TOOL_PEN is _not_ set * * @param fd The file descriptor to an event device. * @param test_grab If true, test whether an EVIOCGRAB is possible on the * device. A failure to grab the event device returns in a failure. * * @return TRUE if the device is a touchpad or FALSE otherwise. */ static Bool event_query_is_touchpad(int fd, BOOL test_grab) { int ret = FALSE, rc; unsigned long evbits[NBITS(EV_MAX)] = { 0 }; unsigned long absbits[NBITS(ABS_MAX)] = { 0 }; unsigned long keybits[NBITS(KEY_MAX)] = { 0 }; if (test_grab) { SYSCALL(rc = ioctl(fd, EVIOCGRAB, (pointer) 1)); if (rc < 0) return FALSE; } /* Check for ABS_X, ABS_Y, ABS_PRESSURE and BTN_TOOL_FINGER */ SYSCALL(rc = ioctl(fd, EVIOCGBIT(0, sizeof(evbits)), evbits)); if (rc < 0) goto unwind; if (!TEST_BIT(EV_SYN, evbits) || !TEST_BIT(EV_ABS, evbits) || !TEST_BIT(EV_KEY, evbits)) goto unwind; SYSCALL(rc = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits)); if (rc < 0) goto unwind; if (!TEST_BIT(ABS_X, absbits) || !TEST_BIT(ABS_Y, absbits)) goto unwind; SYSCALL(rc = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits)); if (rc < 0) goto unwind; /* we expect touchpad either report raw pressure or touches */ if (!TEST_BIT(ABS_PRESSURE, absbits) && !TEST_BIT(BTN_TOUCH, keybits)) goto unwind; /* all Synaptics-like touchpad report BTN_TOOL_FINGER */ if (!TEST_BIT(BTN_TOOL_FINGER, keybits)) goto unwind; if (TEST_BIT(BTN_TOOL_PEN, keybits)) goto unwind; /* Don't match wacom tablets */ ret = TRUE; unwind: if (test_grab) SYSCALL(ioctl(fd, EVIOCGRAB, (pointer) 0)); return (ret == TRUE); } #define PRODUCT_ANY 0x0000 struct model_lookup_t { short vendor; short product_start; short product_end; enum TouchpadModel model; }; static struct model_lookup_t model_lookup_table[] = { {0x0002, 0x0007, 0x0007, MODEL_SYNAPTICS}, {0x0002, 0x0008, 0x0008, MODEL_ALPS}, {0x05ac, PRODUCT_ANY, 0x222, MODEL_APPLETOUCH}, {0x05ac, 0x223, PRODUCT_ANY, MODEL_UNIBODY_MACBOOK}, {0x0002, 0x000e, 0x000e, MODEL_ELANTECH}, {0x0, 0x0, 0x0, 0x0} }; /** * Check for the vendor/product id on the file descriptor and compare * with the built-in model LUT. This information is used in synaptics.c to * initialize model-specific dimensions. * * @param fd The file descriptor to a event device. * @param[out] model_out The type of touchpad model detected. * * @return TRUE on success or FALSE otherwise. */ static Bool event_query_model(int fd, enum TouchpadModel *model_out, unsigned short *vendor_id, unsigned short *product_id) { struct input_id id; int rc; struct model_lookup_t *model_lookup; SYSCALL(rc = ioctl(fd, EVIOCGID, &id)); if (rc < 0) return FALSE; for (model_lookup = model_lookup_table; model_lookup->vendor; model_lookup++) { if (model_lookup->vendor == id.vendor && (model_lookup->product_start == PRODUCT_ANY || model_lookup->product_start <= id.product) && (model_lookup->product_end == PRODUCT_ANY || model_lookup->product_end >= id.product)) *model_out = model_lookup->model; } *vendor_id = id.vendor; *product_id = id.product; return TRUE; } /** * Get absinfo information from the given file descriptor for the given * ABS_FOO code and store the information in min, max, fuzz and res. * * @param fd File descriptor to an event device * @param code Event code (e.g. ABS_X) * @param[out] min Minimum axis range * @param[out] max Maximum axis range * @param[out] fuzz Fuzz of this axis. If NULL, fuzz is ignored. * @param[out] res Axis resolution. If NULL or the current kernel does not * support the resolution field, res is ignored * * @return Zero on success, or errno otherwise. */ static int event_get_abs(InputInfoPtr pInfo, int fd, int code, int *min, int *max, int *fuzz, int *res) { int rc; struct input_absinfo abs = { 0 }; SYSCALL(rc = ioctl(fd, EVIOCGABS(code), &abs)); if (rc < 0) { xf86IDrvMsg(pInfo, X_ERROR, "%s EVIOCGABS error on %d (%s)\n", __func__, code, strerror(errno)); return errno; } *min = abs.minimum; *max = abs.maximum; /* We dont trust a zero fuzz as it probably is just a lazy value */ if (fuzz && abs.fuzz > 0) *fuzz = abs.fuzz; #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,30) if (res) *res = abs.resolution; #endif return 0; } /* Query device for axis ranges */ static void event_query_axis_ranges(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = priv->proto_data; unsigned long absbits[NBITS(ABS_MAX)] = { 0 }; unsigned long keybits[NBITS(KEY_MAX)] = { 0 }; char buf[256] = { 0 }; int rc; /* The kernel's fuzziness concept seems a bit weird, but it can more or * less be applied as hysteresis directly, i.e. no factor here. */ event_get_abs(pInfo, pInfo->fd, ABS_X, &priv->minx, &priv->maxx, &priv->synpara.hyst_x, &priv->resx); event_get_abs(pInfo, pInfo->fd, ABS_Y, &priv->miny, &priv->maxy, &priv->synpara.hyst_y, &priv->resy); priv->has_pressure = FALSE; priv->has_width = FALSE; SYSCALL(rc = ioctl(pInfo->fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits)); if (rc >= 0) { priv->has_pressure = (TEST_BIT(ABS_PRESSURE, absbits) != 0); priv->has_width = (TEST_BIT(ABS_TOOL_WIDTH, absbits) != 0); } else xf86IDrvMsg(pInfo, X_ERROR, "failed to query ABS bits (%s)\n", strerror(errno)); if (priv->has_pressure) event_get_abs(pInfo, pInfo->fd, ABS_PRESSURE, &priv->minp, &priv->maxp, NULL, NULL); if (priv->has_width) event_get_abs(pInfo, pInfo->fd, ABS_TOOL_WIDTH, &priv->minw, &priv->maxw, NULL, NULL); if (priv->has_touch) { int st_minx = priv->minx; int st_maxx = priv->maxx; int st_miny = priv->miny; int st_maxy = priv->maxy; event_get_abs(pInfo, pInfo->fd, ABS_MT_POSITION_X, &priv->minx, &priv->maxx, &priv->synpara.hyst_x, &priv->resx); event_get_abs(pInfo, pInfo->fd, ABS_MT_POSITION_Y, &priv->miny, &priv->maxy, &priv->synpara.hyst_y, &priv->resy); proto_data->st_to_mt_offset[0] = priv->minx - st_minx; proto_data->st_to_mt_scale[0] = (priv->maxx - priv->minx) / (st_maxx - st_minx); proto_data->st_to_mt_offset[1] = priv->miny - st_miny; proto_data->st_to_mt_scale[1] = (priv->maxy - priv->miny) / (st_maxy - st_miny); } SYSCALL(rc = ioctl(pInfo->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits)); if (rc >= 0) { priv->has_left = (TEST_BIT(BTN_LEFT, keybits) != 0); priv->has_right = (TEST_BIT(BTN_RIGHT, keybits) != 0); priv->has_middle = (TEST_BIT(BTN_MIDDLE, keybits) != 0); priv->has_double = (TEST_BIT(BTN_TOOL_DOUBLETAP, keybits) != 0); priv->has_triple = (TEST_BIT(BTN_TOOL_TRIPLETAP, keybits) != 0); if ((TEST_BIT(BTN_0, keybits) != 0) || (TEST_BIT(BTN_1, keybits) != 0) || (TEST_BIT(BTN_2, keybits) != 0) || (TEST_BIT(BTN_3, keybits) != 0)) priv->has_scrollbuttons = 1; } /* Now print the device information */ xf86IDrvMsg(pInfo, X_PROBED, "x-axis range %d - %d (res %d)\n", priv->minx, priv->maxx, priv->resx); xf86IDrvMsg(pInfo, X_PROBED, "y-axis range %d - %d (res %d)\n", priv->miny, priv->maxy, priv->resy); if (priv->has_pressure) xf86IDrvMsg(pInfo, X_PROBED, "pressure range %d - %d\n", priv->minp, priv->maxp); else xf86IDrvMsg(pInfo, X_INFO, "device does not report pressure, will use touch data.\n"); if (priv->has_width) xf86IDrvMsg(pInfo, X_PROBED, "finger width range %d - %d\n", priv->minw, priv->maxw); else xf86IDrvMsg(pInfo, X_INFO, "device does not report finger width.\n"); if (priv->has_left) strcat(buf, " left"); if (priv->has_right) strcat(buf, " right"); if (priv->has_middle) strcat(buf, " middle"); if (priv->has_double) strcat(buf, " double"); if (priv->has_triple) strcat(buf, " triple"); if (priv->has_scrollbuttons) strcat(buf, " scroll-buttons"); xf86IDrvMsg(pInfo, X_PROBED, "buttons:%s\n", buf); } static Bool EventQueryHardware(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = priv->proto_data; if (!event_query_is_touchpad (pInfo->fd, (proto_data) ? proto_data->need_grab : TRUE)) return FALSE; xf86IDrvMsg(pInfo, X_PROBED, "touchpad found\n"); return TRUE; } static Bool SynapticsReadEvent(InputInfoPtr pInfo, struct input_event *ev) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = priv->proto_data; int rc = TRUE; ssize_t len; if (proto_data->mtdev) len = mtdev_get(proto_data->mtdev, pInfo->fd, ev, 1) * sizeof(struct input_event); else len = read(pInfo->fd, ev, sizeof(*ev)); if (len <= 0) { /* We use X_NONE here because it doesn't alloc */ if (errno != EAGAIN) LogMessageVerbSigSafe(X_ERROR, 0, "%s: Read error %d\n", pInfo->name, errno); rc = FALSE; } else if (len % sizeof(*ev)) { LogMessageVerbSigSafe(X_ERROR, 0, "%s: Read error, invalid number of bytes.", pInfo->name); rc = FALSE; } return rc; } static Bool EventTouchSlotPreviouslyOpen(SynapticsPrivate * priv, int slot) { int i; for (i = 0; i < priv->num_active_touches; i++) if (priv->open_slots[i] == slot) return TRUE; return FALSE; } static void EventProcessTouchEvent(InputInfoPtr pInfo, struct SynapticsHwState *hw, struct input_event *ev) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = priv->proto_data; if (!priv->has_touch) return; if (ev->code == ABS_MT_SLOT) { proto_data->cur_slot = ev->value; } else { int slot_index = last_mt_vals_slot(priv); if (slot_index < 0) return; if (hw->slot_state[slot_index] == SLOTSTATE_OPEN_EMPTY) hw->slot_state[slot_index] = SLOTSTATE_UPDATE; if (ev->code == ABS_MT_TRACKING_ID) { if (ev->value >= 0) { hw->slot_state[slot_index] = SLOTSTATE_OPEN; proto_data->num_touches++; valuator_mask_copy(hw->mt_mask[slot_index], proto_data->last_mt_vals[slot_index]); } else if (hw->slot_state[slot_index] != SLOTSTATE_EMPTY) { hw->slot_state[slot_index] = SLOTSTATE_CLOSE; proto_data->num_touches--; } } else { ValuatorMask *mask = proto_data->last_mt_vals[slot_index]; int map = proto_data->axis_map[ev->code - ABS_MT_TOUCH_MAJOR]; int last_val = valuator_mask_get(mask, map); valuator_mask_set(hw->mt_mask[slot_index], map, ev->value); if (EventTouchSlotPreviouslyOpen(priv, slot_index)) { if (ev->code == ABS_MT_POSITION_X) hw->cumulative_dx += ev->value - last_val; else if (ev->code == ABS_MT_POSITION_Y) hw->cumulative_dy += ev->value - last_val; } valuator_mask_set(mask, map, ev->value); } } } /** * Count the number of fingers based on the CommData information. * The CommData struct contains the event information based on previous * struct input_events, now we're just counting based on that. * * @param comm Assembled information from previous events. * @return The number of fingers currently set. */ static int count_fingers(InputInfoPtr pInfo, const struct CommData *comm) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = priv->proto_data; int fingers = 0; if (comm->oneFinger) fingers = 1; else if (comm->twoFingers) fingers = 2; else if (comm->threeFingers) fingers = 3; if (priv->has_touch && proto_data->num_touches > fingers) fingers = proto_data->num_touches; return fingers; } static inline double apply_st_scaling(struct eventcomm_proto_data *proto_data, int value, int axis) { return value * proto_data->st_to_mt_scale[axis] + proto_data->st_to_mt_offset[axis]; } Bool EventReadHwState(InputInfoPtr pInfo, struct CommData *comm, struct SynapticsHwState *hwRet) { struct input_event ev; Bool v; struct SynapticsHwState *hw = comm->hwState; SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; SynapticsParameters *para = &priv->synpara; struct eventcomm_proto_data *proto_data = priv->proto_data; SynapticsResetTouchHwState(hw, FALSE); /* Reset cumulative values if buttons were not previously pressed */ if (!hw->left && !hw->right && !hw->middle) { hw->cumulative_dx = hw->x; hw->cumulative_dy = hw->y; } while (SynapticsReadEvent(pInfo, &ev)) { switch (ev.type) { case EV_SYN: switch (ev.code) { case SYN_REPORT: hw->numFingers = count_fingers(pInfo, comm); hw->millis = 1000 * ev.time.tv_sec + ev.time.tv_usec / 1000; SynapticsCopyHwState(hwRet, hw); return TRUE; } break; case EV_KEY: v = (ev.value ? TRUE : FALSE); switch (ev.code) { case BTN_LEFT: hw->left = v; break; case BTN_RIGHT: hw->right = v; break; case BTN_MIDDLE: hw->middle = v; break; case BTN_FORWARD: hw->up = v; break; case BTN_BACK: hw->down = v; break; case BTN_0: hw->multi[0] = v; break; case BTN_1: hw->multi[1] = v; break; case BTN_2: hw->multi[2] = v; break; case BTN_3: hw->multi[3] = v; break; case BTN_4: hw->multi[4] = v; break; case BTN_5: hw->multi[5] = v; break; case BTN_6: hw->multi[6] = v; break; case BTN_7: hw->multi[7] = v; break; case BTN_TOOL_FINGER: comm->oneFinger = v; break; case BTN_TOOL_DOUBLETAP: comm->twoFingers = v; break; case BTN_TOOL_TRIPLETAP: comm->threeFingers = v; break; case BTN_TOUCH: if (!priv->has_pressure) hw->z = v ? para->finger_high + 1 : 0; break; } break; case EV_ABS: if (ev.code < ABS_MT_SLOT) { switch (ev.code) { case ABS_X: hw->x = apply_st_scaling(proto_data, ev.value, 0); break; case ABS_Y: hw->y = apply_st_scaling(proto_data, ev.value, 1); break; case ABS_PRESSURE: hw->z = ev.value; break; case ABS_TOOL_WIDTH: hw->fingerWidth = ev.value; break; } } else EventProcessTouchEvent(pInfo, hw, &ev); break; } } return FALSE; } /* filter for the AutoDevProbe scandir on /dev/input */ static int EventDevOnly(const struct dirent *dir) { return strncmp(EVENT_DEV_NAME, dir->d_name, 5) == 0; } static void event_query_touch(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; SynapticsParameters *para = &priv->synpara; struct eventcomm_proto_data *proto_data = priv->proto_data; struct mtdev *mtdev; int i; int rc; uint8_t prop; priv->max_touches = 0; priv->num_mt_axes = 0; #ifdef EVIOCGPROP SYSCALL(rc = ioctl(pInfo->fd, EVIOCGPROP(sizeof(prop)), &prop)); if (rc >= 0 && BitIsOn(&prop, INPUT_PROP_SEMI_MT)) { xf86IDrvMsg(pInfo, X_INFO, "ignoring touch events for semi-multitouch device\n"); priv->has_semi_mt = TRUE; } if (rc >= 0 && BitIsOn(&prop, INPUT_PROP_BUTTONPAD)) { xf86IDrvMsg(pInfo, X_INFO, "found clickpad property\n"); para->clickpad = TRUE; } #endif mtdev = mtdev_new_open(pInfo->fd); if (!mtdev) { xf86IDrvMsg(pInfo, X_WARNING, "failed to open mtdev when querying touch capabilities\n"); return; } for (i = 0; i < MT_ABS_SIZE; i++) { if (mtdev->caps.has_abs[i]) { switch (i) { /* X and Y axis info is handed by synaptics already */ case ABS_MT_POSITION_X - ABS_MT_TOUCH_MAJOR: case ABS_MT_POSITION_Y - ABS_MT_TOUCH_MAJOR: /* Skip tracking ID info */ case ABS_MT_TRACKING_ID - ABS_MT_TOUCH_MAJOR: break; default: priv->num_mt_axes++; break; } priv->has_touch = TRUE; } } if (priv->has_touch) { int axnum; static const char *labels[] = { AXIS_LABEL_PROP_ABS_MT_TOUCH_MAJOR, AXIS_LABEL_PROP_ABS_MT_TOUCH_MINOR, AXIS_LABEL_PROP_ABS_MT_WIDTH_MAJOR, AXIS_LABEL_PROP_ABS_MT_WIDTH_MINOR, AXIS_LABEL_PROP_ABS_MT_ORIENTATION, AXIS_LABEL_PROP_ABS_MT_POSITION_X, AXIS_LABEL_PROP_ABS_MT_POSITION_Y, AXIS_LABEL_PROP_ABS_MT_TOOL_TYPE, AXIS_LABEL_PROP_ABS_MT_BLOB_ID, AXIS_LABEL_PROP_ABS_MT_TRACKING_ID, AXIS_LABEL_PROP_ABS_MT_PRESSURE, }; if (mtdev->caps.slot.maximum > 0) priv->max_touches = mtdev->caps.slot.maximum - mtdev->caps.slot.minimum + 1; priv->touch_axes = malloc(priv->num_mt_axes * sizeof(SynapticsTouchAxisRec)); if (!priv->touch_axes) { priv->has_touch = FALSE; goto out; } axnum = 0; for (i = 0; i < MT_ABS_SIZE; i++) { if (mtdev->caps.has_abs[i]) { switch (i) { /* X and Y axis info is handed by synaptics already, we just * need to map the evdev codes to the valuator numbers */ case ABS_MT_POSITION_X - ABS_MT_TOUCH_MAJOR: proto_data->axis_map[i] = 0; break; case ABS_MT_POSITION_Y - ABS_MT_TOUCH_MAJOR: proto_data->axis_map[i] = 1; break; /* Skip tracking ID info */ case ABS_MT_TRACKING_ID - ABS_MT_TOUCH_MAJOR: break; default: priv->touch_axes[axnum].label = labels[i]; priv->touch_axes[axnum].min = mtdev->caps.abs[i].minimum; priv->touch_axes[axnum].max = mtdev->caps.abs[i].maximum; /* Kernel provides units/mm, X wants units/m */ priv->touch_axes[axnum].res = mtdev->caps.abs[i].resolution * 1000; /* Valuators 0-3 are used for X, Y, and scrolling */ proto_data->axis_map[i] = 4 + axnum; axnum++; break; } } } } out: mtdev_close_delete(mtdev); } /** * Probe the open device for dimensions. */ static void EventReadDevDimensions(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; struct eventcomm_proto_data *proto_data = priv->proto_data; int i; proto_data = EventProtoDataAlloc(); priv->proto_data = proto_data; for (i = 0; i < MT_ABS_SIZE; i++) proto_data->axis_map[i] = -1; proto_data->cur_slot = -1; if (event_query_is_touchpad(pInfo->fd, proto_data->need_grab)) { event_query_touch(pInfo); event_query_axis_ranges(pInfo); } event_query_model(pInfo->fd, &priv->model, &priv->id_vendor, &priv->id_product); xf86IDrvMsg(pInfo, X_PROBED, "Vendor %#hx Product %#hx\n", priv->id_vendor, priv->id_product); } static Bool EventAutoDevProbe(InputInfoPtr pInfo, const char *device) { /* We are trying to find the right eventX device or fall back to the psaux protocol and the given device from XF86Config */ int i; Bool touchpad_found = FALSE; struct dirent **namelist; if (device) { int fd = -1; SYSCALL(fd = open(device, O_RDONLY)); if (fd >= 0) { touchpad_found = event_query_is_touchpad(fd, TRUE); SYSCALL(close(fd)); /* if a device is set and not a touchpad (or already grabbed), * we must return FALSE. Otherwise, we'll add a device that * wasn't requested for and repeat * f5687a6741a19ef3081e7fd83ac55f6df8bcd5c2. */ return touchpad_found; } } i = scandir(DEV_INPUT_EVENT, &namelist, EventDevOnly, alphasort); if (i < 0) { xf86IDrvMsg(pInfo, X_ERROR, "Couldn't open %s\n", DEV_INPUT_EVENT); return FALSE; } else if (i == 0) { xf86IDrvMsg(pInfo, X_ERROR, "The /dev/input/event* device nodes seem to be missing\n"); free(namelist); return FALSE; } while (i--) { char fname[64]; int fd = -1; if (!touchpad_found) { sprintf(fname, "%s/%s", DEV_INPUT_EVENT, namelist[i]->d_name); SYSCALL(fd = open(fname, O_RDONLY)); if (fd < 0) continue; if (event_query_is_touchpad(fd, TRUE)) { touchpad_found = TRUE; xf86IDrvMsg(pInfo, X_PROBED, "auto-dev sets device to %s\n", fname); pInfo->options = xf86ReplaceStrOption(pInfo->options, "Device", fname); } SYSCALL(close(fd)); } free(namelist[i]); } free(namelist); if (!touchpad_found) { xf86IDrvMsg(pInfo, X_ERROR, "no synaptics event device found\n"); return FALSE; } return TRUE; } struct SynapticsProtocolOperations event_proto_operations = { EventDeviceOnHook, EventDeviceOffHook, EventQueryHardware, EventReadHwState, EventAutoDevProbe, EventReadDevDimensions };