From 47c78e891323513e9909729b44033e2c6649e2b7 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 27 Nov 2010 09:16:48 +0100 Subject: input: mt: Break out slots handling In preparation for common code to handle a larger set of MT slots devices, move the slots handling over to a separate file. Signed-off-by: Henrik Rydberg --- drivers/input/Makefile | 2 +- drivers/input/input-mt.c | 58 +++++++++++++++++++++++++++++++++ drivers/input/input.c | 48 +-------------------------- drivers/input/misc/uinput.c | 1 + drivers/input/tablet/wacom_wac.c | 1 + drivers/input/touchscreen/wacom_w8001.c | 2 +- 6 files changed, 63 insertions(+), 49 deletions(-) create mode 100644 drivers/input/input-mt.c (limited to 'drivers/input') diff --git a/drivers/input/Makefile b/drivers/input/Makefile index 7ad212d31f99..569938b3cc04 100644 --- a/drivers/input/Makefile +++ b/drivers/input/Makefile @@ -5,7 +5,7 @@ # Each configuration option enables a list of files. obj-$(CONFIG_INPUT) += input-core.o -input-core-objs := input.o input-compat.o ff-core.o +input-core-objs := input.o input-compat.o ff-core.o input-mt.o obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o obj-$(CONFIG_INPUT_POLLDEV) += input-polldev.o diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c new file mode 100644 index 000000000000..463a4d7d54f2 --- /dev/null +++ b/drivers/input/input-mt.c @@ -0,0 +1,58 @@ +/* + * Input Multitouch Library + * + * Copyright (c) 2008-2010 Henrik Rydberg + * + * 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. + */ + +#include +#include + +/** + * input_mt_create_slots() - create 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, and adds ABS_MT_SLOT to the device capabilities. All slots + * are initially marked as unused by setting ABS_MT_TRACKING_ID to -1. + */ +int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) +{ + int i; + + if (!num_slots) + return 0; + + dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL); + if (!dev->mt) + return -ENOMEM; + + dev->mtsize = num_slots; + input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0); + + /* Mark slots as 'unused' */ + for (i = 0; i < num_slots; i++) + input_mt_set_value(&dev->mt[i], ABS_MT_TRACKING_ID, -1); + + return 0; +} +EXPORT_SYMBOL(input_mt_create_slots); + +/** + * input_mt_destroy_slots() - frees the MT slots of the input device + * @dev: input device with allocated MT slots + * + * This function is only needed in error path as the input core will + * automatically free the MT slots when the device is destroyed. + */ +void input_mt_destroy_slots(struct input_dev *dev) +{ + kfree(dev->mt); + dev->mt = NULL; + dev->mtsize = 0; +} +EXPORT_SYMBOL(input_mt_destroy_slots); diff --git a/drivers/input/input.c b/drivers/input/input.c index d092ef9291da..37708d1d86ec 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -12,7 +12,7 @@ #include #include -#include +#include #include #include #include @@ -1690,52 +1690,6 @@ void input_free_device(struct input_dev *dev) } EXPORT_SYMBOL(input_free_device); -/** - * input_mt_create_slots() - create 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, and adds ABS_MT_SLOT to the device capabilities. All slots - * are initially marked as unused by setting ABS_MT_TRACKING_ID to -1. - */ -int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) -{ - int i; - - if (!num_slots) - return 0; - - dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL); - if (!dev->mt) - return -ENOMEM; - - dev->mtsize = num_slots; - input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0); - - /* Mark slots as 'unused' */ - for (i = 0; i < num_slots; i++) - dev->mt[i].abs[ABS_MT_TRACKING_ID - ABS_MT_FIRST] = -1; - - return 0; -} -EXPORT_SYMBOL(input_mt_create_slots); - -/** - * input_mt_destroy_slots() - frees the MT slots of the input device - * @dev: input device with allocated MT slots - * - * This function is only needed in error path as the input core will - * automatically free the MT slots when the device is destroyed. - */ -void input_mt_destroy_slots(struct input_dev *dev) -{ - kfree(dev->mt); - dev->mt = NULL; - dev->mtsize = 0; -} -EXPORT_SYMBOL(input_mt_destroy_slots); - /** * input_set_capability - mark device as capable of a certain event * @dev: device that is capable of emitting or accepting event diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index b9410784e6a1..8f374143190e 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -37,6 +37,7 @@ #include #include #include +#include #include "../input-compat.h" static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index b3252ef1e279..bde612c6d36d 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -14,6 +14,7 @@ #include "wacom_wac.h" #include "wacom.h" +#include static int wacom_penpartner_irq(struct wacom_wac *wacom) { diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index 9ae4c7b16ba7..5d4f50e52a28 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -15,7 +15,7 @@ #include #include #include -#include +#include #include #include #include -- cgit v1.2.3 From 8cde81001626c4c60b26ef2eb5fc522885ed9fd0 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 27 Nov 2010 10:50:54 +0100 Subject: input: mt: Collect slots initialization code The MT slots devices all follow the same initialization pattern of creating slots and hinting about buffer size. Let drivers call an initialization function instead, and make sure it can be called repeatedly without side effects. Signed-off-by: Henrik Rydberg --- drivers/hid/hid-3m-pct.c | 5 +---- drivers/input/input-mt.c | 19 +++++++++++++------ drivers/input/misc/uinput.c | 3 +-- drivers/input/tablet/wacom_wac.c | 2 +- drivers/input/touchscreen/wacom_w8001.c | 2 +- include/linux/input/mt.h | 2 +- 6 files changed, 18 insertions(+), 15 deletions(-) (limited to 'drivers/input') diff --git a/drivers/hid/hid-3m-pct.c b/drivers/hid/hid-3m-pct.c index 18575a4e0d63..ea475964d05a 100644 --- a/drivers/hid/hid-3m-pct.c +++ b/drivers/hid/hid-3m-pct.c @@ -29,7 +29,6 @@ MODULE_LICENSE("GPL"); #define MAX_SLOTS 60 #define MAX_TRKID USHRT_MAX -#define MAX_EVENTS 360 /* estimated signal-to-noise ratios */ #define SN_MOVE 2048 @@ -123,9 +122,7 @@ static int mmm_input_mapping(struct hid_device *hdev, struct hid_input *hi, EV_ABS, ABS_MT_TRACKING_ID); input_set_abs_params(hi->input, ABS_MT_TRACKING_ID, 0, MAX_TRKID, 0, 0); - if (!hi->input->mt) - input_mt_create_slots(hi->input, MAX_SLOTS); - input_set_events_per_packet(hi->input, MAX_EVENTS); + input_mt_init_slots(hi->input, MAX_SLOTS); return 1; } /* let hid-input decide for the others */ diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 463a4d7d54f2..f400e47092c4 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -12,20 +12,25 @@ #include /** - * input_mt_create_slots() - create MT input slots + * 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, and adds ABS_MT_SLOT to the device capabilities. All slots - * are initially marked as unused by setting ABS_MT_TRACKING_ID to -1. + * 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. */ -int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) +int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) { int i; if (!num_slots) return 0; + if (dev->mt) + return dev->mtsize != num_slots ? -EINVAL : 0; dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL); if (!dev->mt) @@ -33,6 +38,7 @@ int input_mt_create_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_events_per_packet(dev, 6 * num_slots); /* Mark slots as 'unused' */ for (i = 0; i < num_slots; i++) @@ -40,7 +46,7 @@ int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots) return 0; } -EXPORT_SYMBOL(input_mt_create_slots); +EXPORT_SYMBOL(input_mt_init_slots); /** * input_mt_destroy_slots() - frees the MT slots of the input device @@ -54,5 +60,6 @@ void input_mt_destroy_slots(struct input_dev *dev) kfree(dev->mt); dev->mt = NULL; dev->mtsize = 0; + dev->slot = 0; } EXPORT_SYMBOL(input_mt_destroy_slots); diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 8f374143190e..bea89722c4e9 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -407,8 +407,7 @@ static int uinput_setup_device(struct uinput_device *udev, const char __user *bu goto exit; if (test_bit(ABS_MT_SLOT, dev->absbit)) { int nslot = input_abs_get_max(dev, ABS_MT_SLOT) + 1; - input_mt_create_slots(dev, nslot); - input_set_events_per_packet(dev, 6 * nslot); + input_mt_init_slots(dev, nslot); } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) { input_set_events_per_packet(dev, 60); } diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index bde612c6d36d..f26e2238f6ca 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1273,7 +1273,7 @@ void wacom_setup_input_capabilities(struct input_dev *input_dev, __set_bit(BTN_TOOL_FINGER, input_dev->keybit); __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); - input_mt_create_slots(input_dev, 2); + input_mt_init_slots(input_dev, 2); input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, features->x_max, features->x_fuzz, 0); diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index 5d4f50e52a28..4a2e8cf4c8ef 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -318,7 +318,7 @@ static int w8001_setup(struct w8001 *w8001) case 5: w8001->pktlen = W8001_PKTLEN_TOUCH2FG; - input_mt_create_slots(dev, 2); + 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, diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 4f5e9d0e2eae..d7f6518e3222 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -33,7 +33,7 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot, return slot->abs[code - ABS_MT_FIRST]; } -int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots); +int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); void input_mt_destroy_slots(struct input_dev *dev); static inline void input_mt_slot(struct input_dev *dev, int slot) -- cgit v1.2.3 From c5f4dec1ceb6ab773bbbefbe64a7c990c7d6b17f Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Wed, 15 Dec 2010 13:50:34 +0100 Subject: input: mt: Move tracking and pointer emulation to input-mt The drivers using the type B protocol all report tracking information the same way. The contact id is semantically equivalent to ABS_MT_SLOT, and the handling of ABS_MT_TRACKING_ID only complicates the driver. The situation can be improved upon by providing a common pointer emulation code, thereby removing the need for the tracking id in the driver. This patch moves all tracking event handling over to the input core, simplifying both the existing drivers and the ones currently in preparation. Acked-by: Ping Cheng Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg --- drivers/hid/hid-3m-pct.c | 30 +-------- drivers/input/input-mt.c | 115 ++++++++++++++++++++++++++++++-- drivers/input/tablet/wacom_wac.c | 23 ++----- drivers/input/tablet/wacom_wac.h | 4 -- drivers/input/touchscreen/wacom_w8001.c | 21 ++---- include/linux/input.h | 3 + include/linux/input/mt.h | 13 ++++ 7 files changed, 138 insertions(+), 71 deletions(-) (limited to 'drivers/input') 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 #include +#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 +#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 -- cgit v1.2.3