diff options
| -rw-r--r-- | drivers/hid/hid-3m-pct.c | 30 | ||||
| -rw-r--r-- | drivers/input/input-mt.c | 115 | ||||
| -rw-r--r-- | drivers/input/tablet/wacom_wac.c | 23 | ||||
| -rw-r--r-- | drivers/input/tablet/wacom_wac.h | 4 | ||||
| -rw-r--r-- | drivers/input/touchscreen/wacom_w8001.c | 21 | ||||
| -rw-r--r-- | include/linux/input.h | 3 | ||||
| -rw-r--r-- | include/linux/input/mt.h | 13 |
7 files changed, 138 insertions, 71 deletions
diff --git a/drivers/hid/hid-3m-pct.c b/drivers/hid/hid-3m-pct.c index ea475964d05a..4fb7c7528d16 100644 --- a/drivers/hid/hid-3m-pct.c +++ b/drivers/hid/hid-3m-pct.c @@ -28,7 +28,6 @@ MODULE_LICENSE("GPL"); #include "hid-ids.h" #define MAX_SLOTS 60 -#define MAX_TRKID USHRT_MAX /* estimated signal-to-noise ratios */ #define SN_MOVE 2048 @@ -36,14 +35,11 @@ MODULE_LICENSE("GPL"); struct mmm_finger { __s32 x, y, w, h; - __u16 id; - bool prev_touch; bool touch, valid; }; struct mmm_data { struct mmm_finger f[MAX_SLOTS]; - __u16 id; __u8 curid; __u8 nexp, nreal; bool touch, valid; @@ -117,11 +113,6 @@ static int mmm_input_mapping(struct hid_device *hdev, struct hid_input *hi, 0, 1, 0, 0); return 1; case HID_DG_CONTACTID: - field->logical_maximum = MAX_TRKID; - hid_map_usage(hi, usage, bit, max, - EV_ABS, ABS_MT_TRACKING_ID); - input_set_abs_params(hi->input, ABS_MT_TRACKING_ID, - 0, MAX_TRKID, 0, 0); input_mt_init_slots(hi->input, MAX_SLOTS); return 1; } @@ -152,7 +143,6 @@ static int mmm_input_mapped(struct hid_device *hdev, struct hid_input *hi, */ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input) { - struct mmm_finger *oldest = 0; int i; for (i = 0; i < MAX_SLOTS; ++i) { struct mmm_finger *f = &md->f[i]; @@ -161,6 +151,7 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input) continue; } input_mt_slot(input, i); + input_mt_report_slot_state(input, MT_TOOL_FINGER, f->touch); if (f->touch) { /* this finger is on the screen */ int wide = (f->w > f->h); @@ -168,33 +159,16 @@ static void mmm_filter_event(struct mmm_data *md, struct input_dev *input) int major = max(f->w, f->h) >> 1; int minor = min(f->w, f->h) >> 1; - if (!f->prev_touch) - f->id = md->id++; - input_event(input, EV_ABS, ABS_MT_TRACKING_ID, f->id); input_event(input, EV_ABS, ABS_MT_POSITION_X, f->x); input_event(input, EV_ABS, ABS_MT_POSITION_Y, f->y); input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide); input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); - /* touchscreen emulation: pick the oldest contact */ - if (!oldest || ((f->id - oldest->id) & (SHRT_MAX + 1))) - oldest = f; - } else { - /* this finger took off the screen */ - input_event(input, EV_ABS, ABS_MT_TRACKING_ID, -1); } - f->prev_touch = f->touch; f->valid = 0; } - /* touchscreen emulation */ - if (oldest) { - input_event(input, EV_KEY, BTN_TOUCH, 1); - input_event(input, EV_ABS, ABS_X, oldest->x); - input_event(input, EV_ABS, ABS_Y, oldest->y); - } else { - input_event(input, EV_KEY, BTN_TOUCH, 0); - } + input_mt_report_pointer_emulation(input, true); input_sync(input); } diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index f400e47092c4..c48c81f0308d 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -11,17 +11,18 @@ #include <linux/input/mt.h> #include <linux/slab.h> +#define TRKID_SGN ((TRKID_MAX + 1) >> 1) + /** * input_mt_init_slots() - initialize MT input slots * @dev: input device supporting MT events and finger tracking * @num_slots: number of slots used by the device * * This function allocates all necessary memory for MT slot handling - * in the input device, adds ABS_MT_SLOT to the device capabilities - * and sets up appropriate event buffers. All slots are initially - * marked as unused by setting ABS_MT_TRACKING_ID to -1. May be called - * repeatedly. Returns -EINVAL if attempting to reinitialize with a - * different number of slots. + * in the input device, prepares the ABS_MT_SLOT and + * ABS_MT_TRACKING_ID events for use and sets up appropriate buffers. + * May be called repeatedly. Returns -EINVAL if attempting to + * reinitialize with a different number of slots. */ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) { @@ -38,6 +39,7 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) dev->mtsize = num_slots; input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0); + input_set_abs_params(dev, ABS_MT_TRACKING_ID, 0, TRKID_MAX, 0, 0); input_set_events_per_packet(dev, 6 * num_slots); /* Mark slots as 'unused' */ @@ -61,5 +63,108 @@ void input_mt_destroy_slots(struct input_dev *dev) dev->mt = NULL; dev->mtsize = 0; dev->slot = 0; + dev->trkid = 0; } EXPORT_SYMBOL(input_mt_destroy_slots); + +/** + * input_mt_report_slot_state() - report contact state + * @dev: input device with allocated MT slots + * @tool_type: the tool type to use in this slot + * @active: true if contact is active, false otherwise + * + * Reports a contact via ABS_MT_TRACKING_ID, and optionally + * ABS_MT_TOOL_TYPE. If active is true and the slot is currently + * inactive, or if the tool type is changed, a new tracking id is + * assigned to the slot. The tool type is only reported if the + * corresponding absbit field is set. + */ +void input_mt_report_slot_state(struct input_dev *dev, + unsigned int tool_type, bool active) +{ + struct input_mt_slot *mt; + int id; + + if (!dev->mt || !active) { + input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1); + return; + } + + mt = &dev->mt[dev->slot]; + id = input_mt_get_value(mt, ABS_MT_TRACKING_ID); + if (id < 0 || input_mt_get_value(mt, ABS_MT_TOOL_TYPE) != tool_type) + id = input_mt_new_trkid(dev); + + input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, id); + input_event(dev, EV_ABS, ABS_MT_TOOL_TYPE, tool_type); +} +EXPORT_SYMBOL(input_mt_report_slot_state); + +/** + * input_mt_report_finger_count() - report contact count + * @dev: input device with allocated MT slots + * @count: the number of contacts + * + * Reports the contact count via BTN_TOOL_FINGER, BTN_TOOL_DOUBLETAP, + * BTN_TOOL_TRIPLETAP and BTN_TOOL_QUADTAP. + * + * The input core ensures only the KEY events already setup for + * this device will produce output. + */ +void input_mt_report_finger_count(struct input_dev *dev, int count) +{ + input_event(dev, EV_KEY, BTN_TOOL_FINGER, count == 1); + input_event(dev, EV_KEY, BTN_TOOL_DOUBLETAP, count == 2); + input_event(dev, EV_KEY, BTN_TOOL_TRIPLETAP, count == 3); + input_event(dev, EV_KEY, BTN_TOOL_QUADTAP, count == 4); +} +EXPORT_SYMBOL(input_mt_report_finger_count); + +/** + * input_mt_report_pointer_emulation() - common pointer emulation + * @dev: input device with allocated MT slots + * @use_count: report number of active contacts as finger count + * + * Performs legacy pointer emulation via BTN_TOUCH, ABS_X, ABS_Y and + * ABS_PRESSURE. Touchpad finger count is emulated if use_count is true. + * + * The input core ensures only the KEY and ABS axes already setup for + * this device will produce output. + */ +void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count) +{ + struct input_mt_slot *oldest = 0; + int oldid = dev->trkid; + int count = 0; + int i; + + for (i = 0; i < dev->mtsize; ++i) { + struct input_mt_slot *ps = &dev->mt[i]; + int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); + + if (id < 0) + continue; + if ((id - oldid) & TRKID_SGN) { + oldest = ps; + oldid = id; + } + count++; + } + + input_event(dev, EV_KEY, BTN_TOUCH, count > 0); + if (use_count) + input_mt_report_finger_count(dev, count); + + if (oldest) { + int x = input_mt_get_value(oldest, ABS_MT_POSITION_X); + int y = input_mt_get_value(oldest, ABS_MT_POSITION_Y); + int p = input_mt_get_value(oldest, ABS_MT_PRESSURE); + + input_event(dev, EV_ABS, ABS_X, x); + input_event(dev, EV_ABS, ABS_Y, y); + input_event(dev, EV_ABS, ABS_PRESSURE, p); + } else { + input_event(dev, EV_ABS, ABS_PRESSURE, 0); + } +} +EXPORT_SYMBOL(input_mt_report_pointer_emulation); diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index f26e2238f6ca..0b0525486711 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -863,19 +863,21 @@ static int wacom_bpt_touch(struct wacom_wac *wacom) struct wacom_features *features = &wacom->features; struct input_dev *input = wacom->input; unsigned char *data = wacom->data; - int sp = 0, sx = 0, sy = 0, count = 0; int i; for (i = 0; i < 2; i++) { int p = data[9 * i + 2]; + bool touch = p && !wacom->shared->stylus_in_proximity; + input_mt_slot(input, i); + input_mt_report_slot_state(input, MT_TOOL_FINGER, touch); /* * Touch events need to be disabled while stylus is * in proximity because user's hand is resting on touchpad * and sending unwanted events. User expects tablet buttons * to continue working though. */ - if (p && !wacom->shared->stylus_in_proximity) { + if (touch) { int x = get_unaligned_be16(&data[9 * i + 3]) & 0x7ff; int y = get_unaligned_be16(&data[9 * i + 5]) & 0x7ff; if (features->quirks & WACOM_QUIRK_BBTOUCH_LOWRES) { @@ -885,23 +887,10 @@ static int wacom_bpt_touch(struct wacom_wac *wacom) input_report_abs(input, ABS_MT_PRESSURE, p); input_report_abs(input, ABS_MT_POSITION_X, x); input_report_abs(input, ABS_MT_POSITION_Y, y); - if (wacom->id[i] < 0) - wacom->id[i] = wacom->trk_id++ & MAX_TRACKING_ID; - if (!count++) - sp = p, sx = x, sy = y; - } else { - wacom->id[i] = -1; } - input_report_abs(input, ABS_MT_TRACKING_ID, wacom->id[i]); } - input_report_key(input, BTN_TOUCH, count > 0); - input_report_key(input, BTN_TOOL_FINGER, count == 1); - input_report_key(input, BTN_TOOL_DOUBLETAP, count == 2); - - input_report_abs(input, ABS_PRESSURE, sp); - input_report_abs(input, ABS_X, sx); - input_report_abs(input, ABS_Y, sy); + input_mt_report_pointer_emulation(input, true); input_report_key(input, BTN_LEFT, (data[1] & 0x08) != 0); input_report_key(input, BTN_FORWARD, (data[1] & 0x04) != 0); @@ -1283,8 +1272,6 @@ void wacom_setup_input_capabilities(struct input_dev *input_dev, input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, features->pressure_max, features->pressure_fuzz, 0); - input_set_abs_params(input_dev, ABS_MT_TRACKING_ID, 0, - MAX_TRACKING_ID, 0, 0); } else if (features->device_type == BTN_TOOL_PEN) { __set_bit(BTN_TOOL_RUBBER, input_dev->keybit); __set_bit(BTN_TOOL_PEN, input_dev->keybit); diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h index 00ca01541d89..b1310ec9720c 100644 --- a/drivers/input/tablet/wacom_wac.h +++ b/drivers/input/tablet/wacom_wac.h @@ -42,9 +42,6 @@ #define WACOM_QUIRK_MULTI_INPUT 0x0001 #define WACOM_QUIRK_BBTOUCH_LOWRES 0x0002 -/* largest reported tracking id */ -#define MAX_TRACKING_ID 0xfff - enum { PENPARTNER = 0, GRAPHIRE, @@ -100,7 +97,6 @@ struct wacom_wac { int id[3]; __u32 serial[2]; int last_finger; - int trk_id; struct wacom_features features; struct wacom_shared *shared; struct input_dev *input; diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index 4a2e8cf4c8ef..2a0bec12d12a 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -48,8 +48,6 @@ MODULE_LICENSE("GPL"); #define W8001_PKTLEN_TPCCTL 11 /* control packet */ #define W8001_PKTLEN_TOUCH2FG 13 -#define MAX_TRACKING_ID 0xFF /* arbitrarily chosen */ - struct w8001_coord { u8 rdy; u8 tsw; @@ -87,7 +85,6 @@ struct w8001 { char phys[32]; int type; unsigned int pktlen; - int trkid[2]; }; static void parse_data(u8 *data, struct w8001_coord *coord) @@ -116,28 +113,23 @@ static void parse_data(u8 *data, struct w8001_coord *coord) static void parse_touch(struct w8001 *w8001) { - static int trkid; struct input_dev *dev = w8001->dev; unsigned char *data = w8001->data; int i; for (i = 0; i < 2; i++) { - input_mt_slot(dev, i); + bool touch = data[0] & (1 << i); - if (data[0] & (1 << i)) { + input_mt_slot(dev, i); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch); + if (touch) { int x = (data[6 * i + 1] << 7) | (data[6 * i + 2]); int y = (data[6 * i + 3] << 7) | (data[6 * i + 4]); /* data[5,6] and [11,12] is finger capacity */ input_report_abs(dev, ABS_MT_POSITION_X, x); input_report_abs(dev, ABS_MT_POSITION_Y, y); - input_report_abs(dev, ABS_MT_TOOL_TYPE, MT_TOOL_FINGER); - if (w8001->trkid[i] < 0) - w8001->trkid[i] = trkid++ & MAX_TRACKING_ID; - } else { - w8001->trkid[i] = -1; } - input_report_abs(dev, ABS_MT_TRACKING_ID, w8001->trkid[i]); } input_sync(dev); @@ -319,14 +311,12 @@ static int w8001_setup(struct w8001 *w8001) w8001->pktlen = W8001_PKTLEN_TOUCH2FG; input_mt_init_slots(dev, 2); - input_set_abs_params(dev, ABS_MT_TRACKING_ID, - 0, MAX_TRACKING_ID, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_X, 0, touch.x, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, touch.y, 0, 0); input_set_abs_params(dev, ABS_MT_TOOL_TYPE, - 0, 0, 0, 0); + 0, MT_TOOL_MAX, 0, 0); break; } } @@ -372,7 +362,6 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) w8001->serio = serio; w8001->id = serio->id.id; w8001->dev = input_dev; - w8001->trkid[0] = w8001->trkid[1] = -1; init_completion(&w8001->cmd_done); snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys); diff --git a/include/linux/input.h b/include/linux/input.h index 99e2a52c0509..6de145df4c1c 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -848,6 +848,7 @@ struct input_keymap_entry { */ #define MT_TOOL_FINGER 0 #define MT_TOOL_PEN 1 +#define MT_TOOL_MAX 1 /* * Values describing the status of a force-feedback effect @@ -1122,6 +1123,7 @@ struct ff_effect { * of tracked contacts * @mtsize: number of MT slots the device uses * @slot: MT slot currently being transmitted + * @trkid: stores MT tracking ID for the current contact * @absinfo: array of &struct absinfo elements holding information * about absolute axes (current value, min, max, flat, fuzz, * resolution) @@ -1206,6 +1208,7 @@ struct input_dev { struct input_mt_slot *mt; int mtsize; int slot; + int trkid; struct input_absinfo *absinfo; diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index d7f6518e3222..b3ac06a4435d 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -13,6 +13,8 @@ #include <linux/input.h> +#define TRKID_MAX 0xffff + /** * struct input_mt_slot - represents the state of an input MT slot * @abs: holds current values of ABS_MT axes for this slot @@ -36,9 +38,20 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot, int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); void input_mt_destroy_slots(struct input_dev *dev); +static inline int input_mt_new_trkid(struct input_dev *dev) +{ + return dev->trkid++ & TRKID_MAX; +} + static inline void input_mt_slot(struct input_dev *dev, int slot) { input_event(dev, EV_ABS, ABS_MT_SLOT, slot); } +void input_mt_report_slot_state(struct input_dev *dev, + unsigned int tool_type, bool active); + +void input_mt_report_finger_count(struct input_dev *dev, int count); +void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count); + #endif |
