From 8d18fba282120a4a8e4416d1202522ffae8cad58 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 15 Sep 2012 15:15:58 +0200 Subject: Input: Break out MT data Move all MT-related things to a separate place. This saves some bytes for non-mt input devices, and prepares for new MT features. Reviewed-and-tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 6c58bff..a0692c5 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -653,20 +653,22 @@ static int evdev_handle_mt_request(struct input_dev *dev, unsigned int size, int __user *ip) { - const struct input_mt_slot *mt = dev->mt; + const struct input_mt *mt = dev->mt; unsigned int code; int max_slots; int i; if (get_user(code, &ip[0])) return -EFAULT; - if (!input_is_mt_value(code)) + if (!mt || !input_is_mt_value(code)) return -EINVAL; max_slots = (size - sizeof(__u32)) / sizeof(__s32); - for (i = 0; i < dev->mtsize && i < max_slots; i++) - if (put_user(input_mt_get_value(&mt[i], code), &ip[1 + i])) + for (i = 0; i < mt->num_slots && i < max_slots; i++) { + int value = input_mt_get_value(&mt->slots[i], code); + if (put_user(value, &ip[1 + i])) return -EFAULT; + } return 0; } diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 70a16c7..37ee1f9 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -27,26 +27,28 @@ */ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) { + struct input_mt *mt = dev->mt; int i; if (!num_slots) return 0; - if (dev->mt) - return dev->mtsize != num_slots ? -EINVAL : 0; + if (mt) + return mt->num_slots != num_slots ? -EINVAL : 0; - dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL); - if (!dev->mt) + mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots), GFP_KERNEL); + if (!mt) return -ENOMEM; - dev->mtsize = num_slots; + mt->num_slots = 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' */ for (i = 0; i < num_slots; i++) - input_mt_set_value(&dev->mt[i], ABS_MT_TRACKING_ID, -1); + input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1); + dev->mt = mt; return 0; } EXPORT_SYMBOL(input_mt_init_slots); @@ -62,9 +64,6 @@ void input_mt_destroy_slots(struct input_dev *dev) { kfree(dev->mt); dev->mt = NULL; - dev->mtsize = 0; - dev->slot = 0; - dev->trkid = 0; } EXPORT_SYMBOL(input_mt_destroy_slots); @@ -83,18 +82,19 @@ EXPORT_SYMBOL(input_mt_destroy_slots); void input_mt_report_slot_state(struct input_dev *dev, unsigned int tool_type, bool active) { - struct input_mt_slot *mt; + struct input_mt *mt = dev->mt; + struct input_mt_slot *slot; int id; - if (!dev->mt || !active) { + if (!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); + slot = &mt->slots[mt->slot]; + id = input_mt_get_value(slot, ABS_MT_TRACKING_ID); + if (id < 0 || input_mt_get_value(slot, ABS_MT_TOOL_TYPE) != tool_type) + id = input_mt_new_trkid(mt); input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, id); input_event(dev, EV_ABS, ABS_MT_TOOL_TYPE, tool_type); @@ -135,13 +135,19 @@ EXPORT_SYMBOL(input_mt_report_finger_count); */ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count) { - struct input_mt_slot *oldest = NULL; - int oldid = dev->trkid; - int count = 0; - int i; + struct input_mt *mt = dev->mt; + struct input_mt_slot *oldest; + int oldid, count, i; + + if (!mt) + return; + + oldest = 0; + oldid = mt->trkid; + count = 0; - for (i = 0; i < dev->mtsize; ++i) { - struct input_mt_slot *ps = &dev->mt[i]; + for (i = 0; i < mt->num_slots; ++i) { + struct input_mt_slot *ps = &mt->slots[i]; int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); if (id < 0) diff --git a/drivers/input/input.c b/drivers/input/input.c index 8921c61..79a4a2a 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -166,6 +166,7 @@ static void input_stop_autorepeat(struct input_dev *dev) static int input_handle_abs_event(struct input_dev *dev, unsigned int code, int *pval) { + struct input_mt *mt = dev->mt; bool is_mt_event; int *pold; @@ -174,8 +175,8 @@ static int input_handle_abs_event(struct input_dev *dev, * "Stage" the event; we'll flush it later, when we * get actual touch data. */ - if (*pval >= 0 && *pval < dev->mtsize) - dev->slot = *pval; + if (mt && *pval >= 0 && *pval < mt->num_slots) + mt->slot = *pval; return INPUT_IGNORE_EVENT; } @@ -184,9 +185,8 @@ static int input_handle_abs_event(struct input_dev *dev, if (!is_mt_event) { pold = &dev->absinfo[code].value; - } else if (dev->mt) { - struct input_mt_slot *mtslot = &dev->mt[dev->slot]; - pold = &mtslot->abs[code - ABS_MT_FIRST]; + } else if (mt) { + pold = &mt->slots[mt->slot].abs[code - ABS_MT_FIRST]; } else { /* * Bypass filtering for multi-touch events when @@ -205,9 +205,9 @@ static int input_handle_abs_event(struct input_dev *dev, } /* Flush pending "slot" event */ - if (is_mt_event && dev->slot != input_abs_get_val(dev, ABS_MT_SLOT)) { - input_abs_set_val(dev, ABS_MT_SLOT, dev->slot); - input_pass_event(dev, EV_ABS, ABS_MT_SLOT, dev->slot); + if (is_mt_event && mt && mt->slot != input_abs_get_val(dev, ABS_MT_SLOT)) { + input_abs_set_val(dev, ABS_MT_SLOT, mt->slot); + input_pass_event(dev, EV_ABS, ABS_MT_SLOT, mt->slot); } return INPUT_PASS_TO_HANDLERS; @@ -1751,8 +1751,8 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev) int i; unsigned int events; - if (dev->mtsize) { - mt_slots = dev->mtsize; + if (dev->mt) { + mt_slots = dev->mt->num_slots; } else if (test_bit(ABS_MT_TRACKING_ID, dev->absbit)) { mt_slots = dev->absinfo[ABS_MT_TRACKING_ID].maximum - dev->absinfo[ABS_MT_TRACKING_ID].minimum + 1, diff --git a/include/linux/input.h b/include/linux/input.h index 725dcd0..9da4f57 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1203,11 +1203,7 @@ struct ff_effect { * software autorepeat * @timer: timer for software autorepeat * @rep: current values for autorepeat parameters (delay, rate) - * @mt: pointer to array of struct input_mt_slot holding current values - * 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 + * @mt: pointer to multitouch state * @absinfo: array of &struct input_absinfo elements holding information * about absolute axes (current value, min, max, flat, fuzz, * resolution) @@ -1287,10 +1283,7 @@ struct input_dev { int rep[REP_CNT]; - struct input_mt_slot *mt; - int mtsize; - int slot; - int trkid; + struct input_mt *mt; struct input_absinfo *absinfo; diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index f867375..63458bc 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -23,6 +23,20 @@ struct input_mt_slot { int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; }; +/** + * struct input_mt - state of tracked contacts + * @trkid: stores MT tracking ID for the next contact + * @num_slots: number of MT slots the device uses + * @slot: MT slot currently being transmitted + * @slots: array of slots holding current values of tracked contacts + */ +struct input_mt { + int trkid; + int num_slots; + int slot; + struct input_mt_slot slots[]; +}; + static inline void input_mt_set_value(struct input_mt_slot *slot, unsigned code, int value) { @@ -38,9 +52,9 @@ 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) +static inline int input_mt_new_trkid(struct input_mt *mt) { - return dev->trkid++ & TRKID_MAX; + return mt->trkid++ & TRKID_MAX; } static inline void input_mt_slot(struct input_dev *dev, int slot) -- cgit v0.10.2 From 7c75bf99271139ca7cb2d0cca3be11f1f7c59efd Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 1 Sep 2012 16:15:43 +0200 Subject: Input: Improve the events-per-packet estimate The events-per-packet estimate has so far been used by MT devices only. This patch adjusts the packet buffer size to also accomodate the KEY and MSC events. Keyboards normally send one or two keys at a time. MT devices normally send a number of button keys along with the MT information. The buffer size chosen here covers those cases, and matches the default buffer size in evdev. Since the input estimate is now preferred, remove the special input-mt estimate. Reviewed-and-tested-by: Ping Cheng Tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 37ee1f9..6020d06 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -42,7 +42,6 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) mt->num_slots = 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' */ for (i = 0; i < num_slots; i++) diff --git a/drivers/input/input.c b/drivers/input/input.c index 79a4a2a..fb3a2c1 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -1778,6 +1778,9 @@ static unsigned int input_estimate_events_per_packet(struct input_dev *dev) if (test_bit(i, dev->relbit)) events++; + /* Make room for KEY and MSC events */ + events += 7; + return events; } @@ -1816,6 +1819,7 @@ int input_register_device(struct input_dev *dev) { static atomic_t input_no = ATOMIC_INIT(0); struct input_handler *handler; + unsigned int packet_size; const char *path; int error; @@ -1828,9 +1832,9 @@ int input_register_device(struct input_dev *dev) /* Make sure that bitmasks not mentioned in dev->evbit are clean. */ input_cleanse_bitmasks(dev); - if (!dev->hint_events_per_packet) - dev->hint_events_per_packet = - input_estimate_events_per_packet(dev); + packet_size = input_estimate_events_per_packet(dev); + if (dev->hint_events_per_packet < packet_size) + dev->hint_events_per_packet = packet_size; /* * If delay and period are pre-set by the driver, then autorepeating -- cgit v0.10.2 From 0672120a2ee7c533dfec6db7c3e43450f439e5ff Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Fri, 10 Aug 2012 21:39:38 +0200 Subject: Input: Make sure we follow all EV_KEY events For some EV_KEY types, sending a larger-than-one value causes the input state to oscillate. This patch makes sure this cannot happen, clearing up the autorepeat bypass logic in the process. Tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input.c b/drivers/input/input.c index fb3a2c1..f075fbb 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -240,24 +240,30 @@ static void input_handle_event(struct input_dev *dev, break; case EV_KEY: - if (is_event_supported(code, dev->keybit, KEY_MAX) && - !!test_bit(code, dev->key) != value) { + if (is_event_supported(code, dev->keybit, KEY_MAX)) { + + /* auto-repeat bypasses state updates */ + if (value == 2) { + disposition = INPUT_PASS_TO_HANDLERS; + break; + } + + if (!!test_bit(code, dev->key) != !!value) { - if (value != 2) { __change_bit(code, dev->key); + disposition = INPUT_PASS_TO_HANDLERS; + if (value) input_start_autorepeat(dev, code); else input_stop_autorepeat(dev); } - - disposition = INPUT_PASS_TO_HANDLERS; } break; case EV_SW: if (is_event_supported(code, dev->swbit, SW_MAX) && - !!test_bit(code, dev->sw) != value) { + !!test_bit(code, dev->sw) != !!value) { __change_bit(code, dev->sw); disposition = INPUT_PASS_TO_HANDLERS; @@ -284,7 +290,7 @@ static void input_handle_event(struct input_dev *dev, case EV_LED: if (is_event_supported(code, dev->ledbit, LED_MAX) && - !!test_bit(code, dev->led) != value) { + !!test_bit(code, dev->led) != !!value) { __change_bit(code, dev->led); disposition = INPUT_PASS_TO_ALL; -- cgit v0.10.2 From 352ac4bd018005cfa6f844433a98aa0b724fa8db Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Fri, 10 Aug 2012 21:36:15 +0200 Subject: Input: Move autorepeat to the event-passing phase Preparing to split event filtering and event passing, move the autorepeat function to the point where the event is actually passed. Tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input.c b/drivers/input/input.c index f075fbb..fbe522d 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -69,6 +69,22 @@ static int input_defuzz_abs_event(int value, int old_val, int fuzz) return value; } +static void input_start_autorepeat(struct input_dev *dev, int code) +{ + if (test_bit(EV_REP, dev->evbit) && + dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] && + dev->timer.data) { + dev->repeat_key = code; + mod_timer(&dev->timer, + jiffies + msecs_to_jiffies(dev->rep[REP_DELAY])); + } +} + +static void input_stop_autorepeat(struct input_dev *dev) +{ + del_timer(&dev->timer); +} + /* * Pass event first through all filters and then, if event has not been * filtered out, through all open handles. This function is called with @@ -105,6 +121,15 @@ static void input_pass_event(struct input_dev *dev, } rcu_read_unlock(); + + /* trigger auto repeat for key events */ + if (type == EV_KEY && value != 2) { + if (value) + input_start_autorepeat(dev, code); + else + input_stop_autorepeat(dev); + } + } /* @@ -142,22 +167,6 @@ static void input_repeat_key(unsigned long data) spin_unlock_irqrestore(&dev->event_lock, flags); } -static void input_start_autorepeat(struct input_dev *dev, int code) -{ - if (test_bit(EV_REP, dev->evbit) && - dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] && - dev->timer.data) { - dev->repeat_key = code; - mod_timer(&dev->timer, - jiffies + msecs_to_jiffies(dev->rep[REP_DELAY])); - } -} - -static void input_stop_autorepeat(struct input_dev *dev) -{ - del_timer(&dev->timer); -} - #define INPUT_IGNORE_EVENT 0 #define INPUT_PASS_TO_HANDLERS 1 #define INPUT_PASS_TO_DEVICE 2 @@ -252,11 +261,6 @@ static void input_handle_event(struct input_dev *dev, __change_bit(code, dev->key); disposition = INPUT_PASS_TO_HANDLERS; - - if (value) - input_start_autorepeat(dev, code); - else - input_stop_autorepeat(dev); } } break; -- cgit v0.10.2 From 4369c64c79a22b98d3b7eff9d089196cd878a10a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 15 Sep 2012 15:23:35 +0200 Subject: Input: Send events one packet at a time On heavy event loads, such as a multitouch driver, the irqsoff latency can be as high as 250 us. By accumulating a frame worth of data before passing it on, the latency can be dramatically reduced. As a side effect, the special EV_SYN handling can be removed, since the frame is now atomic. This patch adds the events() handler callback and uses it if it exists. The latency is improved by 50 us even without the callback. Cc: Daniel Kurtz Tested-by: Benjamin Tissoires Tested-by: Ping Cheng Tested-by: Sedat Dilek Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input.c b/drivers/input/input.c index fbe522d..5244f3d 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -47,6 +47,8 @@ static DEFINE_MUTEX(input_mutex); static struct input_handler *input_table[8]; +static const struct input_value input_value_sync = { EV_SYN, SYN_REPORT, 1 }; + static inline int is_event_supported(unsigned int code, unsigned long *bm, unsigned int max) { @@ -90,46 +92,81 @@ static void input_stop_autorepeat(struct input_dev *dev) * filtered out, through all open handles. This function is called with * dev->event_lock held and interrupts disabled. */ -static void input_pass_event(struct input_dev *dev, - unsigned int type, unsigned int code, int value) +static unsigned int input_to_handler(struct input_handle *handle, + struct input_value *vals, unsigned int count) { - struct input_handler *handler; - struct input_handle *handle; + struct input_handler *handler = handle->handler; + struct input_value *end = vals; + struct input_value *v; - rcu_read_lock(); + for (v = vals; v != vals + count; v++) { + if (handler->filter && + handler->filter(handle, v->type, v->code, v->value)) + continue; + if (end != v) + *end = *v; + end++; + } - handle = rcu_dereference(dev->grab); - if (handle) - handle->handler->event(handle, type, code, value); - else { - bool filtered = false; + count = end - vals; + if (!count) + return 0; - list_for_each_entry_rcu(handle, &dev->h_list, d_node) { - if (!handle->open) - continue; + if (handler->events) + handler->events(handle, vals, count); + else if (handler->event) + for (v = vals; v != end; v++) + handler->event(handle, v->type, v->code, v->value); + + return count; +} + +/* + * Pass values first through all filters and then, if event has not been + * filtered out, through all open handles. This function is called with + * dev->event_lock held and interrupts disabled. + */ +static void input_pass_values(struct input_dev *dev, + struct input_value *vals, unsigned int count) +{ + struct input_handle *handle; + struct input_value *v; - handler = handle->handler; - if (!handler->filter) { - if (filtered) - break; + if (!count) + return; - handler->event(handle, type, code, value); + rcu_read_lock(); - } else if (handler->filter(handle, type, code, value)) - filtered = true; - } + handle = rcu_dereference(dev->grab); + if (handle) { + count = input_to_handler(handle, vals, count); + } else { + list_for_each_entry_rcu(handle, &dev->h_list, d_node) + if (handle->open) + count = input_to_handler(handle, vals, count); } rcu_read_unlock(); + add_input_randomness(vals->type, vals->code, vals->value); + /* trigger auto repeat for key events */ - if (type == EV_KEY && value != 2) { - if (value) - input_start_autorepeat(dev, code); - else - input_stop_autorepeat(dev); + for (v = vals; v != vals + count; v++) { + if (v->type == EV_KEY && v->value != 2) { + if (v->value) + input_start_autorepeat(dev, v->code); + else + input_stop_autorepeat(dev); + } } +} +static void input_pass_event(struct input_dev *dev, + unsigned int type, unsigned int code, int value) +{ + struct input_value vals[] = { { type, code, value } }; + + input_pass_values(dev, vals, ARRAY_SIZE(vals)); } /* @@ -146,18 +183,12 @@ static void input_repeat_key(unsigned long data) if (test_bit(dev->repeat_key, dev->key) && is_event_supported(dev->repeat_key, dev->keybit, KEY_MAX)) { + struct input_value vals[] = { + { EV_KEY, dev->repeat_key, 2 }, + input_value_sync + }; - input_pass_event(dev, EV_KEY, dev->repeat_key, 2); - - if (dev->sync) { - /* - * Only send SYN_REPORT if we are not in a middle - * of driver parsing a new hardware packet. - * Otherwise assume that the driver will send - * SYN_REPORT once it's done. - */ - input_pass_event(dev, EV_SYN, SYN_REPORT, 1); - } + input_pass_values(dev, vals, ARRAY_SIZE(vals)); if (dev->rep[REP_PERIOD]) mod_timer(&dev->timer, jiffies + @@ -170,6 +201,8 @@ static void input_repeat_key(unsigned long data) #define INPUT_IGNORE_EVENT 0 #define INPUT_PASS_TO_HANDLERS 1 #define INPUT_PASS_TO_DEVICE 2 +#define INPUT_SLOT 4 +#define INPUT_FLUSH 8 #define INPUT_PASS_TO_ALL (INPUT_PASS_TO_HANDLERS | INPUT_PASS_TO_DEVICE) static int input_handle_abs_event(struct input_dev *dev, @@ -216,14 +249,14 @@ static int input_handle_abs_event(struct input_dev *dev, /* Flush pending "slot" event */ if (is_mt_event && mt && mt->slot != input_abs_get_val(dev, ABS_MT_SLOT)) { input_abs_set_val(dev, ABS_MT_SLOT, mt->slot); - input_pass_event(dev, EV_ABS, ABS_MT_SLOT, mt->slot); + return INPUT_PASS_TO_HANDLERS | INPUT_SLOT; } return INPUT_PASS_TO_HANDLERS; } -static void input_handle_event(struct input_dev *dev, - unsigned int type, unsigned int code, int value) +static int input_get_disposition(struct input_dev *dev, + unsigned int type, unsigned int code, int value) { int disposition = INPUT_IGNORE_EVENT; @@ -236,13 +269,9 @@ static void input_handle_event(struct input_dev *dev, break; case SYN_REPORT: - if (!dev->sync) { - dev->sync = true; - disposition = INPUT_PASS_TO_HANDLERS; - } + disposition = INPUT_PASS_TO_HANDLERS | INPUT_FLUSH; break; case SYN_MT_REPORT: - dev->sync = false; disposition = INPUT_PASS_TO_HANDLERS; break; } @@ -327,14 +356,48 @@ static void input_handle_event(struct input_dev *dev, break; } - if (disposition != INPUT_IGNORE_EVENT && type != EV_SYN) - dev->sync = false; + return disposition; +} + +static void input_handle_event(struct input_dev *dev, + unsigned int type, unsigned int code, int value) +{ + int disposition; + + disposition = input_get_disposition(dev, type, code, value); if ((disposition & INPUT_PASS_TO_DEVICE) && dev->event) dev->event(dev, type, code, value); - if (disposition & INPUT_PASS_TO_HANDLERS) - input_pass_event(dev, type, code, value); + if (!dev->vals) + return; + + if (disposition & INPUT_PASS_TO_HANDLERS) { + struct input_value *v; + + if (disposition & INPUT_SLOT) { + v = &dev->vals[dev->num_vals++]; + v->type = EV_ABS; + v->code = ABS_MT_SLOT; + v->value = dev->mt->slot; + } + + v = &dev->vals[dev->num_vals++]; + v->type = type; + v->code = code; + v->value = value; + } + + if (disposition & INPUT_FLUSH) { + if (dev->num_vals >= 2) + input_pass_values(dev, dev->vals, dev->num_vals); + dev->num_vals = 0; + } else if (dev->num_vals >= dev->max_vals - 2) { + dev->vals[dev->num_vals++] = input_value_sync; + input_pass_values(dev, dev->vals, dev->num_vals); + dev->num_vals = 0; + } + } /** @@ -362,7 +425,6 @@ void input_event(struct input_dev *dev, if (is_event_supported(type, dev->evbit, EV_MAX)) { spin_lock_irqsave(&dev->event_lock, flags); - add_input_randomness(type, code, value); input_handle_event(dev, type, code, value); spin_unlock_irqrestore(&dev->event_lock, flags); } @@ -841,10 +903,12 @@ int input_set_keycode(struct input_dev *dev, if (test_bit(EV_KEY, dev->evbit) && !is_event_supported(old_keycode, dev->keybit, KEY_MAX) && __test_and_clear_bit(old_keycode, dev->key)) { + struct input_value vals[] = { + { EV_KEY, old_keycode, 0 }, + input_value_sync + }; - input_pass_event(dev, EV_KEY, old_keycode, 0); - if (dev->sync) - input_pass_event(dev, EV_SYN, SYN_REPORT, 1); + input_pass_values(dev, vals, ARRAY_SIZE(vals)); } out: @@ -1426,6 +1490,7 @@ static void input_dev_release(struct device *device) input_ff_destroy(dev); input_mt_destroy_slots(dev); kfree(dev->absinfo); + kfree(dev->vals); kfree(dev); module_put(THIS_MODULE); @@ -1846,6 +1911,11 @@ int input_register_device(struct input_dev *dev) if (dev->hint_events_per_packet < packet_size) dev->hint_events_per_packet = packet_size; + dev->max_vals = max(dev->hint_events_per_packet, packet_size) + 2; + dev->vals = kcalloc(dev->max_vals, sizeof(*dev->vals), GFP_KERNEL); + if (!dev->vals) + return -ENOMEM; + /* * If delay and period are pre-set by the driver, then autorepeating * is handled by the driver itself and we don't do it in input.c. diff --git a/include/linux/input.h b/include/linux/input.h index 9da4f57..ba48743 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1169,6 +1169,18 @@ struct ff_effect { #include /** + * struct input_value - input value representation + * @type: type of value (EV_KEY, EV_ABS, etc) + * @code: the value code + * @value: the value + */ +struct input_value { + __u16 type; + __u16 code; + __s32 value; +}; + +/** * struct input_dev - represents an input device * @name: name of the device * @phys: physical path to the device in the system hierarchy @@ -1240,7 +1252,6 @@ struct ff_effect { * last user closes the device * @going_away: marks devices that are in a middle of unregistering and * causes input_open_device*() fail with -ENODEV. - * @sync: set to %true when there were no new events since last EV_SYN * @dev: driver model's view of this device * @h_list: list of input handles associated with the device. When * accessing the list dev->mutex must be held @@ -1305,12 +1316,14 @@ struct input_dev { unsigned int users; bool going_away; - bool sync; - struct device dev; struct list_head h_list; struct list_head node; + + unsigned int num_vals; + unsigned int max_vals; + struct input_value *vals; }; #define to_input_dev(d) container_of(d, struct input_dev, dev) @@ -1371,6 +1384,9 @@ struct input_handle; * @event: event handler. This method is being called by input core with * interrupts disabled and dev->event_lock spinlock held and so * it may not sleep + * @events: event sequence handler. This method is being called by + * input core with interrupts disabled and dev->event_lock + * spinlock held and so it may not sleep * @filter: similar to @event; separates normal event handlers from * "filters". * @match: called after comparing device's id with handler's id_table @@ -1407,6 +1423,8 @@ struct input_handler { void *private; void (*event)(struct input_handle *handle, unsigned int type, unsigned int code, int value); + void (*events)(struct input_handle *handle, + const struct input_value *vals, unsigned int count); bool (*filter)(struct input_handle *handle, unsigned int type, unsigned int code, int value); bool (*match)(struct input_handler *handler, struct input_dev *dev); int (*connect)(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id); -- cgit v0.10.2 From a274ac15ed069bae4118e3251359240379b6801b Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Wed, 29 Aug 2012 20:48:02 +0200 Subject: Input: evdev - Add the events() callback By sending a full frame of events at the same time, the irqsoff latency at heavy load is brought down from 200 us to 100 us. Cc: Daniel Kurtz Tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index a0692c5..118d030 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -54,16 +54,9 @@ struct evdev_client { static struct evdev *evdev_table[EVDEV_MINORS]; static DEFINE_MUTEX(evdev_table_mutex); -static void evdev_pass_event(struct evdev_client *client, - struct input_event *event, - ktime_t mono, ktime_t real) +static void __pass_event(struct evdev_client *client, + const struct input_event *event) { - event->time = ktime_to_timeval(client->clkid == CLOCK_MONOTONIC ? - mono : real); - - /* Interrupts are disabled, just acquire the lock. */ - spin_lock(&client->buffer_lock); - client->buffer[client->head++] = *event; client->head &= client->bufsize - 1; @@ -86,42 +79,74 @@ static void evdev_pass_event(struct evdev_client *client, client->packet_head = client->head; kill_fasync(&client->fasync, SIGIO, POLL_IN); } +} + +static void evdev_pass_values(struct evdev_client *client, + const struct input_value *vals, unsigned int count, + ktime_t mono, ktime_t real) +{ + struct evdev *evdev = client->evdev; + const struct input_value *v; + struct input_event event; + bool wakeup = false; + + event.time = ktime_to_timeval(client->clkid == CLOCK_MONOTONIC ? + mono : real); + + /* Interrupts are disabled, just acquire the lock. */ + spin_lock(&client->buffer_lock); + + for (v = vals; v != vals + count; v++) { + event.type = v->type; + event.code = v->code; + event.value = v->value; + __pass_event(client, &event); + if (v->type == EV_SYN && v->code == SYN_REPORT) + wakeup = true; + } spin_unlock(&client->buffer_lock); + + if (wakeup) + wake_up_interruptible(&evdev->wait); } /* - * Pass incoming event to all connected clients. + * Pass incoming events to all connected clients. */ -static void evdev_event(struct input_handle *handle, - unsigned int type, unsigned int code, int value) +static void evdev_events(struct input_handle *handle, + const struct input_value *vals, unsigned int count) { struct evdev *evdev = handle->private; struct evdev_client *client; - struct input_event event; ktime_t time_mono, time_real; time_mono = ktime_get(); time_real = ktime_sub(time_mono, ktime_get_monotonic_offset()); - event.type = type; - event.code = code; - event.value = value; - rcu_read_lock(); client = rcu_dereference(evdev->grab); if (client) - evdev_pass_event(client, &event, time_mono, time_real); + evdev_pass_values(client, vals, count, time_mono, time_real); else list_for_each_entry_rcu(client, &evdev->client_list, node) - evdev_pass_event(client, &event, time_mono, time_real); + evdev_pass_values(client, vals, count, + time_mono, time_real); rcu_read_unlock(); +} - if (type == EV_SYN && code == SYN_REPORT) - wake_up_interruptible(&evdev->wait); +/* + * Pass incoming event to all connected clients. + */ +static void evdev_event(struct input_handle *handle, + unsigned int type, unsigned int code, int value) +{ + struct input_value vals[] = { { type, code, value } }; + + evdev_events(handle, vals, 1); } static int evdev_fasync(int fd, struct file *file, int on) @@ -1050,6 +1075,7 @@ MODULE_DEVICE_TABLE(input, evdev_ids); static struct input_handler evdev_handler = { .event = evdev_event, + .events = evdev_events, .connect = evdev_connect, .disconnect = evdev_disconnect, .fops = &evdev_fops, -- cgit v0.10.2 From b4adbbefc2099476a4f1020041c99f52cf3cd67d Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 11 Aug 2012 22:07:55 +0200 Subject: Input: MT - Add flags to input_mt_init_slots() Preparing to move more repeated code into the mt core, add a flags argument to the input_mt_slots_init() function. Reviewed-and-tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index 7364726..25ddf3e 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -392,7 +392,7 @@ static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hd __set_bit(EV_ABS, input->evbit); - error = input_mt_init_slots(input, 16); + error = input_mt_init_slots(input, 16, 0); if (error) return error; input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255 << 2, diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 59c8b5c..c400d90 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -390,7 +390,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, case HID_DG_CONTACTID: if (!td->maxcontacts) td->maxcontacts = MT_DEFAULT_MAXCONTACT; - input_mt_init_slots(hi->input, td->maxcontacts); + input_mt_init_slots(hi->input, td->maxcontacts, 0); mt_store_field(usage, td, hi); td->last_field_index = field->index; td->touches_by_report++; diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 6020d06..1985f27 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -25,7 +25,8 @@ * 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) +int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, + unsigned int flags) { struct input_mt *mt = dev->mt; int i; @@ -40,6 +41,7 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) return -ENOMEM; mt->num_slots = num_slots; + mt->flags = flags; 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); diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 7360568..6b17975 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -405,7 +405,7 @@ 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_init_slots(dev, nslot); + input_mt_init_slots(dev, nslot, 0); } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) { input_set_events_per_packet(dev, 60); } diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 4a1347e..cf5af1f 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -1620,7 +1620,7 @@ int alps_init(struct psmouse *psmouse) case ALPS_PROTO_V3: case ALPS_PROTO_V4: set_bit(INPUT_PROP_SEMI_MT, dev1->propbit); - input_mt_init_slots(dev1, 2); + input_mt_init_slots(dev1, 2, 0); input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0); input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0); diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 4790110..1e8e42f 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1004,7 +1004,7 @@ static int elantech_set_input_params(struct psmouse *psmouse) input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, ETP_WMAX_V2, 0, 0); } - input_mt_init_slots(dev, 2); + input_mt_init_slots(dev, 2, 0); input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); break; @@ -1035,7 +1035,7 @@ static int elantech_set_input_params(struct psmouse *psmouse) input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, ETP_WMAX_V2, 0, 0); /* Multitouch capable pad, up to 5 fingers. */ - input_mt_init_slots(dev, ETP_MAX_FINGERS); + input_mt_init_slots(dev, ETP_MAX_FINGERS, 0); input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); input_abs_set_res(dev, ABS_MT_POSITION_X, x_res); diff --git a/drivers/input/mouse/sentelic.c b/drivers/input/mouse/sentelic.c index 3f5649f..b47155d 100644 --- a/drivers/input/mouse/sentelic.c +++ b/drivers/input/mouse/sentelic.c @@ -960,7 +960,7 @@ static int fsp_set_input_params(struct psmouse *psmouse) input_set_abs_params(dev, ABS_X, 0, abs_x, 0, 0); input_set_abs_params(dev, ABS_Y, 0, abs_y, 0, 0); - input_mt_init_slots(dev, 2); + input_mt_init_slots(dev, 2, 0); input_set_abs_params(dev, ABS_MT_POSITION_X, 0, abs_x, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, abs_y, 0, 0); } diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 14eaece..37033ad 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1232,7 +1232,7 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0); if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) { - input_mt_init_slots(dev, 2); + input_mt_init_slots(dev, 2, 0); set_abs_position_params(dev, priv, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* Image sensors can report per-contact pressure */ @@ -1244,7 +1244,7 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) } else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) { /* Non-image sensors with AGM use semi-mt */ __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); - input_mt_init_slots(dev, 2); + input_mt_init_slots(dev, 2, 0); set_abs_position_params(dev, priv, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); } diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 0020419..5837d07 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1530,7 +1530,7 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev, __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); - input_mt_init_slots(input_dev, features->touch_max); + input_mt_init_slots(input_dev, features->touch_max, 0); input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); @@ -1575,7 +1575,7 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev, case TABLETPC2FG: if (features->device_type == BTN_TOOL_FINGER) { - input_mt_init_slots(input_dev, features->touch_max); + input_mt_init_slots(input_dev, features->touch_max, 0); input_set_abs_params(input_dev, ABS_MT_TOOL_TYPE, 0, MT_TOOL_MAX, 0, 0); input_set_abs_params(input_dev, ABS_MT_POSITION_X, @@ -1631,7 +1631,7 @@ int 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_init_slots(input_dev, features->touch_max); + input_mt_init_slots(input_dev, features->touch_max, 0); if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) { __set_bit(BTN_TOOL_TRIPLETAP, diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 4623cc6..e92615d 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -1152,7 +1152,7 @@ static int __devinit mxt_probe(struct i2c_client *client, /* For multi touch */ num_mt_slots = data->T9_reportid_max - data->T9_reportid_min + 1; - error = input_mt_init_slots(input_dev, num_mt_slots); + error = input_mt_init_slots(input_dev, num_mt_slots, 0); if (error) goto err_free_object; input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, diff --git a/drivers/input/touchscreen/cyttsp_core.c b/drivers/input/touchscreen/cyttsp_core.c index f030d9e..8e60437 100644 --- a/drivers/input/touchscreen/cyttsp_core.c +++ b/drivers/input/touchscreen/cyttsp_core.c @@ -571,7 +571,7 @@ struct cyttsp *cyttsp_probe(const struct cyttsp_bus_ops *bus_ops, input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, CY_MAXZ, 0, 0); - input_mt_init_slots(input_dev, CY_MAX_ID); + input_mt_init_slots(input_dev, CY_MAX_ID, 0); error = request_threaded_irq(ts->irq, NULL, cyttsp_irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 9afc777..7b786e7 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -778,7 +778,7 @@ static int __devinit edt_ft5x06_ts_probe(struct i2c_client *client, 0, tsdata->num_x * 64 - 1, 0, 0); input_set_abs_params(input, ABS_MT_POSITION_Y, 0, tsdata->num_y * 64 - 1, 0, 0); - error = input_mt_init_slots(input, MAX_SUPPORT_POINTS); + error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, 0); if (error) { dev_err(&client->dev, "Unable to init MT slots.\n"); goto err_free_mem; diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c index 70524dd..c1e3460 100644 --- a/drivers/input/touchscreen/egalax_ts.c +++ b/drivers/input/touchscreen/egalax_ts.c @@ -204,7 +204,7 @@ static int __devinit egalax_ts_probe(struct i2c_client *client, ABS_MT_POSITION_X, 0, EGALAX_MAX_X, 0, 0); input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, EGALAX_MAX_Y, 0, 0); - input_mt_init_slots(input_dev, MAX_SUPPORT_POINTS); + input_mt_init_slots(input_dev, MAX_SUPPORT_POINTS, 0); input_set_drvdata(input_dev, ts); diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index c004417..4ac6976 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -252,7 +252,7 @@ static int __devinit ili210x_i2c_probe(struct i2c_client *client, input_set_abs_params(input, ABS_Y, 0, ymax, 0, 0); /* Multi touch */ - input_mt_init_slots(input, MAX_TOUCHES); + input_mt_init_slots(input, MAX_TOUCHES, 0); input_set_abs_params(input, ABS_MT_POSITION_X, 0, xmax, 0, 0); input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ymax, 0, 0); diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c index 49c44bb..560cf09 100644 --- a/drivers/input/touchscreen/mms114.c +++ b/drivers/input/touchscreen/mms114.c @@ -404,7 +404,7 @@ static int __devinit mms114_probe(struct i2c_client *client, input_set_abs_params(input_dev, ABS_Y, 0, data->pdata->y_size, 0, 0); /* For multi touch */ - input_mt_init_slots(input_dev, MMS114_MAX_TOUCH); + input_mt_init_slots(input_dev, MMS114_MAX_TOUCH, 0); input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, 0, MMS114_MAX_AREA, 0, 0); input_set_abs_params(input_dev, ABS_MT_POSITION_X, diff --git a/drivers/input/touchscreen/penmount.c b/drivers/input/touchscreen/penmount.c index 4ccde45..b49f0b8 100644 --- a/drivers/input/touchscreen/penmount.c +++ b/drivers/input/touchscreen/penmount.c @@ -264,7 +264,7 @@ static int pm_connect(struct serio *serio, struct serio_driver *drv) input_set_abs_params(pm->dev, ABS_Y, 0, max_y, 0, 0); if (pm->maxcontacts > 1) { - input_mt_init_slots(pm->dev, pm->maxcontacts); + input_mt_init_slots(pm->dev, pm->maxcontacts, 0); input_set_abs_params(pm->dev, ABS_MT_POSITION_X, 0, max_x, 0, 0); input_set_abs_params(pm->dev, diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index 8f9ad2f..9a83be6 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -471,7 +471,7 @@ static int w8001_setup(struct w8001 *w8001) case 5: w8001->pktlen = W8001_PKTLEN_TOUCH2FG; - input_mt_init_slots(dev, 2); + input_mt_init_slots(dev, 2, 0); input_set_abs_params(dev, ABS_MT_POSITION_X, 0, touch.x, 0, 0); input_set_abs_params(dev, ABS_MT_POSITION_Y, diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 63458bc..53f5bf1 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -28,12 +28,14 @@ struct input_mt_slot { * @trkid: stores MT tracking ID for the next contact * @num_slots: number of MT slots the device uses * @slot: MT slot currently being transmitted + * @flags: input_mt operation flags * @slots: array of slots holding current values of tracked contacts */ struct input_mt { int trkid; int num_slots; int slot; + unsigned int flags; struct input_mt_slot slots[]; }; @@ -49,7 +51,8 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot, return slot->abs[code - ABS_MT_FIRST]; } -int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots); +int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, + unsigned int flags); void input_mt_destroy_slots(struct input_dev *dev); static inline int input_mt_new_trkid(struct input_mt *mt) -- cgit v0.10.2 From 55e49089f4589908eb688742d2d7eff33b74ac78 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Wed, 22 Aug 2012 20:43:22 +0200 Subject: Input: MT - Handle frame synchronization in core Most MT drivers perform the same actions on frame synchronization. Some actions, like dropping unseen contacts, are also unnecessarily complex. Collect common frame synchronization tasks in a new function, input_mt_sync_frame(). Depending on the flags set, it drops unseen contacts and performs pointer emulation. With init flags and frame synchronization in place, most MT drivers can be simplified. First out are the bcm5974 and hid-multitouch drivers, following this patch. Reviewed-and-tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 1985f27..96cc2e2 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -14,6 +14,14 @@ #define TRKID_SGN ((TRKID_MAX + 1) >> 1) +static void copy_abs(struct input_dev *dev, unsigned int dst, unsigned int src) +{ + if (dev->absinfo && test_bit(src, dev->absbit)) { + dev->absinfo[dst] = dev->absinfo[src]; + dev->absbit[BIT_WORD(dst)] |= BIT_MASK(dst); + } +} + /** * input_mt_init_slots() - initialize MT input slots * @dev: input device supporting MT events and finger tracking @@ -45,6 +53,28 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int 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); + if (flags & (INPUT_MT_POINTER | INPUT_MT_DIRECT)) { + __set_bit(EV_KEY, dev->evbit); + __set_bit(BTN_TOUCH, dev->keybit); + + copy_abs(dev, ABS_X, ABS_MT_POSITION_X); + copy_abs(dev, ABS_Y, ABS_MT_POSITION_Y); + copy_abs(dev, ABS_PRESSURE, ABS_MT_PRESSURE); + } + if (flags & INPUT_MT_POINTER) { + __set_bit(BTN_TOOL_FINGER, dev->keybit); + __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); + if (num_slots >= 3) + __set_bit(BTN_TOOL_TRIPLETAP, dev->keybit); + if (num_slots >= 4) + __set_bit(BTN_TOOL_QUADTAP, dev->keybit); + if (num_slots >= 5) + __set_bit(BTN_TOOL_QUINTTAP, dev->keybit); + __set_bit(INPUT_PROP_POINTER, dev->propbit); + } + if (flags & INPUT_MT_DIRECT) + __set_bit(INPUT_PROP_DIRECT, dev->propbit); + /* Mark slots as 'unused' */ for (i = 0; i < num_slots; i++) input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1); @@ -87,12 +117,17 @@ void input_mt_report_slot_state(struct input_dev *dev, struct input_mt_slot *slot; int id; - if (!mt || !active) { + if (!mt) + return; + + slot = &mt->slots[mt->slot]; + slot->frame = mt->frame; + + if (!active) { input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1); return; } - slot = &mt->slots[mt->slot]; id = input_mt_get_value(slot, ABS_MT_TRACKING_ID); if (id < 0 || input_mt_get_value(slot, ABS_MT_TOOL_TYPE) != tool_type) id = input_mt_new_trkid(mt); @@ -177,3 +212,34 @@ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count) } } EXPORT_SYMBOL(input_mt_report_pointer_emulation); + +/** + * input_mt_sync_frame() - synchronize mt frame + * @dev: input device with allocated MT slots + * + * Close the frame and prepare the internal state for a new one. + * Depending on the flags, marks unused slots as inactive and performs + * pointer emulation. + */ +void input_mt_sync_frame(struct input_dev *dev) +{ + struct input_mt *mt = dev->mt; + struct input_mt_slot *s; + + if (!mt) + return; + + if (mt->flags & INPUT_MT_DROP_UNUSED) { + for (s = mt->slots; s != mt->slots + mt->num_slots; s++) { + if (s->frame == mt->frame) + continue; + input_mt_slot(dev, s - mt->slots); + input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1); + } + } + + input_mt_report_pointer_emulation(dev, (mt->flags & INPUT_MT_POINTER)); + + mt->frame++; +} +EXPORT_SYMBOL(input_mt_sync_frame); diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 53f5bf1..9498918 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -15,12 +15,17 @@ #define TRKID_MAX 0xffff +#define INPUT_MT_POINTER 0x0001 /* pointer device, e.g. trackpad */ +#define INPUT_MT_DIRECT 0x0002 /* direct device, e.g. touchscreen */ +#define INPUT_MT_DROP_UNUSED 0x0004 /* drop contacts not seen in frame */ /** * struct input_mt_slot - represents the state of an input MT slot * @abs: holds current values of ABS_MT axes for this slot + * @frame: last frame at which input_mt_report_slot_state() was called */ struct input_mt_slot { int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; + unsigned int frame; }; /** @@ -29,6 +34,7 @@ struct input_mt_slot { * @num_slots: number of MT slots the device uses * @slot: MT slot currently being transmitted * @flags: input_mt operation flags + * @frame: increases every time input_mt_sync_frame() is called * @slots: array of slots holding current values of tracked contacts */ struct input_mt { @@ -36,6 +42,7 @@ struct input_mt { int num_slots; int slot; unsigned int flags; + unsigned int frame; struct input_mt_slot slots[]; }; @@ -81,4 +88,6 @@ void input_mt_report_slot_state(struct input_dev *dev, 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); +void input_mt_sync_frame(struct input_dev *dev); + #endif -- cgit v0.10.2 From 7c1a87897c75139dec258eb03e1a24fb73385b73 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sun, 12 Aug 2012 20:47:05 +0200 Subject: Input: MT - Add in-kernel tracking With the INPUT_MT_TRACK flag set, the function input_mt_assign_slots() can be used to match a new set of contacts against the currently used slots. The algorithm used is based on Lagrange relaxation, and performs very well in practice; slower than mtdev for a few corner cases, but faster in most commonly occuring cases. Tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 96cc2e2..caff298 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -46,7 +46,7 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots), GFP_KERNEL); if (!mt) - return -ENOMEM; + goto err_mem; mt->num_slots = num_slots; mt->flags = flags; @@ -74,6 +74,12 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, } if (flags & INPUT_MT_DIRECT) __set_bit(INPUT_PROP_DIRECT, dev->propbit); + if (flags & INPUT_MT_TRACK) { + unsigned int n2 = num_slots * num_slots; + mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL); + if (!mt->red) + goto err_mem; + } /* Mark slots as 'unused' */ for (i = 0; i < num_slots; i++) @@ -81,6 +87,9 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, dev->mt = mt; return 0; +err_mem: + kfree(mt); + return -ENOMEM; } EXPORT_SYMBOL(input_mt_init_slots); @@ -93,7 +102,10 @@ EXPORT_SYMBOL(input_mt_init_slots); */ void input_mt_destroy_slots(struct input_dev *dev) { - kfree(dev->mt); + if (dev->mt) { + kfree(dev->mt->red); + kfree(dev->mt); + } dev->mt = NULL; } EXPORT_SYMBOL(input_mt_destroy_slots); @@ -243,3 +255,131 @@ void input_mt_sync_frame(struct input_dev *dev) mt->frame++; } EXPORT_SYMBOL(input_mt_sync_frame); + +static int adjust_dual(int *begin, int step, int *end, int eq) +{ + int f, *p, s, c; + + if (begin == end) + return 0; + + f = *begin; + p = begin + step; + s = p == end ? f + 1 : *p; + + for (; p != end; p += step) + if (*p < f) + s = f, f = *p; + else if (*p < s) + s = *p; + + c = (f + s + 1) / 2; + if (c == 0 || (c > 0 && !eq)) + return 0; + if (s < 0) + c *= 2; + + for (p = begin; p != end; p += step) + *p -= c; + + return (c < s && s <= 0) || (f >= 0 && f < c); +} + +static void find_reduced_matrix(int *w, int nr, int nc, int nrc) +{ + int i, k, sum; + + for (k = 0; k < nrc; k++) { + for (i = 0; i < nr; i++) + adjust_dual(w + i, nr, w + i + nrc, nr <= nc); + sum = 0; + for (i = 0; i < nrc; i += nr) + sum += adjust_dual(w + i, 1, w + i + nr, nc <= nr); + if (!sum) + break; + } +} + +static int input_mt_set_matrix(struct input_mt *mt, + const struct input_mt_pos *pos, int num_pos) +{ + const struct input_mt_pos *p; + struct input_mt_slot *s; + int *w = mt->red; + int x, y; + + for (s = mt->slots; s != mt->slots + mt->num_slots; s++) { + if (!input_mt_is_active(s)) + continue; + x = input_mt_get_value(s, ABS_MT_POSITION_X); + y = input_mt_get_value(s, ABS_MT_POSITION_Y); + for (p = pos; p != pos + num_pos; p++) { + int dx = x - p->x, dy = y - p->y; + *w++ = dx * dx + dy * dy; + } + } + + return w - mt->red; +} + +static void input_mt_set_slots(struct input_mt *mt, + int *slots, int num_pos) +{ + struct input_mt_slot *s; + int *w = mt->red, *p; + + for (p = slots; p != slots + num_pos; p++) + *p = -1; + + for (s = mt->slots; s != mt->slots + mt->num_slots; s++) { + if (!input_mt_is_active(s)) + continue; + for (p = slots; p != slots + num_pos; p++) + if (*w++ < 0) + *p = s - mt->slots; + } + + for (s = mt->slots; s != mt->slots + mt->num_slots; s++) { + if (input_mt_is_active(s)) + continue; + for (p = slots; p != slots + num_pos; p++) + if (*p < 0) { + *p = s - mt->slots; + break; + } + } +} + +/** + * input_mt_assign_slots() - perform a best-match assignment + * @dev: input device with allocated MT slots + * @slots: the slot assignment to be filled + * @pos: the position array to match + * @num_pos: number of positions + * + * Performs a best match against the current contacts and returns + * the slot assignment list. New contacts are assigned to unused + * slots. + * + * Returns zero on success, or negative error in case of failure. + */ +int input_mt_assign_slots(struct input_dev *dev, int *slots, + const struct input_mt_pos *pos, int num_pos) +{ + struct input_mt *mt = dev->mt; + int nrc; + + if (!mt || !mt->red) + return -ENXIO; + if (num_pos > mt->num_slots) + return -EINVAL; + if (num_pos < 1) + return 0; + + nrc = input_mt_set_matrix(mt, pos, num_pos); + find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc); + input_mt_set_slots(mt, slots, num_pos); + + return 0; +} +EXPORT_SYMBOL(input_mt_assign_slots); diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 9498918..6b6f7c8 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -18,6 +18,8 @@ #define INPUT_MT_POINTER 0x0001 /* pointer device, e.g. trackpad */ #define INPUT_MT_DIRECT 0x0002 /* direct device, e.g. touchscreen */ #define INPUT_MT_DROP_UNUSED 0x0004 /* drop contacts not seen in frame */ +#define INPUT_MT_TRACK 0x0008 /* use in-kernel tracking */ + /** * struct input_mt_slot - represents the state of an input MT slot * @abs: holds current values of ABS_MT axes for this slot @@ -35,6 +37,7 @@ struct input_mt_slot { * @slot: MT slot currently being transmitted * @flags: input_mt operation flags * @frame: increases every time input_mt_sync_frame() is called + * @red: reduced cost matrix for in-kernel tracking * @slots: array of slots holding current values of tracked contacts */ struct input_mt { @@ -43,6 +46,7 @@ struct input_mt { int slot; unsigned int flags; unsigned int frame; + int *red; struct input_mt_slot slots[]; }; @@ -58,6 +62,11 @@ static inline int input_mt_get_value(const struct input_mt_slot *slot, return slot->abs[code - ABS_MT_FIRST]; } +static inline bool input_mt_is_active(const struct input_mt_slot *slot) +{ + return input_mt_get_value(slot, ABS_MT_TRACKING_ID) >= 0; +} + int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, unsigned int flags); void input_mt_destroy_slots(struct input_dev *dev); @@ -90,4 +99,16 @@ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count); void input_mt_sync_frame(struct input_dev *dev); +/** + * struct input_mt_pos - contact position + * @x: horizontal coordinate + * @y: vertical coordinate + */ +struct input_mt_pos { + s16 x, y; +}; + +int input_mt_assign_slots(struct input_dev *dev, int *slots, + const struct input_mt_pos *pos, int num_pos); + #endif -- cgit v0.10.2 From 17a465a7f2d6ce31738a3a76591afeab165f185a Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 1 Sep 2012 09:27:20 +0200 Subject: Input: MT - Get slot by key Some devices use an internal key for tracking which cannot be directly mapped to slots. This patch provides a key-to-slot mapping, which can be used by drivers of such devices. Reviewed-and-tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index caff298..44f5a67 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -383,3 +383,35 @@ int input_mt_assign_slots(struct input_dev *dev, int *slots, return 0; } EXPORT_SYMBOL(input_mt_assign_slots); + +/** + * input_mt_get_slot_by_key() - return slot matching key + * @dev: input device with allocated MT slots + * @key: the key of the sought slot + * + * Returns the slot of the given key, if it exists, otherwise + * set the key on the first unused slot and return. + * + * If no available slot can be found, -1 is returned. + */ +int input_mt_get_slot_by_key(struct input_dev *dev, int key) +{ + struct input_mt *mt = dev->mt; + struct input_mt_slot *s; + + if (!mt) + return -1; + + for (s = mt->slots; s != mt->slots + mt->num_slots; s++) + if (input_mt_is_active(s) && s->key == key) + return s - mt->slots; + + for (s = mt->slots; s != mt->slots + mt->num_slots; s++) + if (!input_mt_is_active(s)) { + s->key = key; + return s - mt->slots; + } + + return -1; +} +EXPORT_SYMBOL(input_mt_get_slot_by_key); diff --git a/include/linux/input/mt.h b/include/linux/input/mt.h index 6b6f7c8..cc5cca7 100644 --- a/include/linux/input/mt.h +++ b/include/linux/input/mt.h @@ -24,10 +24,12 @@ * struct input_mt_slot - represents the state of an input MT slot * @abs: holds current values of ABS_MT axes for this slot * @frame: last frame at which input_mt_report_slot_state() was called + * @key: optional driver designation of this slot */ struct input_mt_slot { int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; unsigned int frame; + unsigned int key; }; /** @@ -111,4 +113,6 @@ struct input_mt_pos { int input_mt_assign_slots(struct input_dev *dev, int *slots, const struct input_mt_pos *pos, int num_pos); +int input_mt_get_slot_by_key(struct input_dev *dev, int key); + #endif -- cgit v0.10.2 From 22739293402966db7ca3eb0148632d986fe30465 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 15 Sep 2012 08:57:18 +0200 Subject: Input: MT - Allow legacy pressure computation Some drivers like to report ABS_PRESSURE in a special way. Allow this when ABS_MT_PRESSURE is not defined. Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 44f5a67..c0ec7d4 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -214,13 +214,17 @@ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_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); + + if (test_bit(ABS_MT_PRESSURE, dev->absbit)) { + int p = input_mt_get_value(oldest, ABS_MT_PRESSURE); + input_event(dev, EV_ABS, ABS_PRESSURE, p); + } } else { - input_event(dev, EV_ABS, ABS_PRESSURE, 0); + if (test_bit(ABS_MT_PRESSURE, dev->absbit)) + input_event(dev, EV_ABS, ABS_PRESSURE, 0); } } EXPORT_SYMBOL(input_mt_report_pointer_emulation); -- cgit v0.10.2 From 9ebf3d7687192923e3d44fdbcd8d9f8375053fb8 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 30 Jul 2012 13:28:18 +0200 Subject: HID: Add an input configured notification callback A hid device may create several input devices, and a driver may need to prepare or finalize the configuration per input device. Currently, there is no sane way for a driver to know when a device has been configured. This patch adds a callback providing that information. Reviewed-and-tested-by: Benjamin Tissoires Tested-by: Ping Cheng Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 811bfad..d917c0d 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1154,6 +1154,7 @@ static void report_features(struct hid_device *hid) int hidinput_connect(struct hid_device *hid, unsigned int force) { + struct hid_driver *drv = hid->driver; struct hid_report *report; struct hid_input *hidinput = NULL; struct input_dev *input_dev; @@ -1228,6 +1229,8 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) * UGCI) cram a lot of unrelated inputs into the * same interface. */ hidinput->report = report; + if (drv->input_configured) + drv->input_configured(hid, hidinput); if (input_register_device(hidinput->input)) goto out_cleanup; hidinput = NULL; @@ -1235,8 +1238,12 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) } } - if (hidinput && input_register_device(hidinput->input)) - goto out_cleanup; + if (hidinput) { + if (drv->input_configured) + drv->input_configured(hid, hidinput); + if (input_register_device(hidinput->input)) + goto out_cleanup; + } return 0; diff --git a/include/linux/hid.h b/include/linux/hid.h index 42970de..f37da28 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -626,6 +626,7 @@ struct hid_usage_id { * @report_fixup: called before report descriptor parsing (NULL means nop) * @input_mapping: invoked on input registering before mapping an usage * @input_mapped: invoked on input registering after mapping an usage + * @input_configured: invoked just before the device is registered * @feature_mapping: invoked on feature registering * @suspend: invoked on suspend (NULL means nop) * @resume: invoked on resume if device was not reset (NULL means nop) @@ -670,6 +671,8 @@ struct hid_driver { int (*input_mapped)(struct hid_device *hdev, struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max); + void (*input_configured)(struct hid_device *hdev, + struct hid_input *hidinput); void (*feature_mapping)(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage); -- cgit v0.10.2 From 7e55bdedfa4a72baa0d4fec8d0948cb65342a9a0 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 3 Sep 2012 12:28:59 +0200 Subject: HID: Allow more fields in the hid report Some recent hardware define more than 128 fields in the report descriptor. Increase the limit to 256. This adds another kilobyte of memory per report. Tested-by: Ping Cheng Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg diff --git a/include/linux/hid.h b/include/linux/hid.h index f37da28..7e1f37d 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -414,7 +414,7 @@ struct hid_field { __u16 dpad; /* dpad input code */ }; -#define HID_MAX_FIELDS 128 +#define HID_MAX_FIELDS 256 struct hid_report { struct list_head list; -- cgit v0.10.2 From 76f5902aebdabcac5b1c34b8d9a238bad397364f Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 1 Sep 2012 20:11:34 +0200 Subject: HID: hid-multitouch: Simplify setup and frame synchronization With the input_configured() callback in place, the setup and frame synchronization can be simplified. The input device initialization is moved to mt_input_configured(), to make sure the full HID report has been seen. Reviewed-and-tested-by: Benjamin Tissoires Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index c400d90..1df86a7 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -92,8 +92,10 @@ struct mt_device { __u8 touches_by_report; /* how many touches are present in one report: * 1 means we should use a serial protocol * > 1 means hybrid (multitouch) protocol */ + bool serial_maybe; /* need to check for serial protocol */ bool curvalid; /* is the current contact valid? */ struct mt_slot *slots; + unsigned mt_flags; /* flags to pass to input-mt */ }; /* classes of device behavior */ @@ -319,24 +321,16 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, * We need to ignore fields that belong to other collections * such as Mouse that might have the same GenericDesktop usages. */ if (field->application == HID_DG_TOUCHSCREEN) - set_bit(INPUT_PROP_DIRECT, hi->input->propbit); + td->mt_flags |= INPUT_MT_DIRECT; else if (field->application != HID_DG_TOUCHPAD) return 0; - /* In case of an indirect device (touchpad), we need to add - * specific BTN_TOOL_* to be handled by the synaptics xorg - * driver. - * We also consider that touchscreens providing buttons are touchpads. + /* + * Model touchscreens providing buttons as touchpads. */ if (field->application == HID_DG_TOUCHPAD || - (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON || - cls->is_indirect) { - set_bit(INPUT_PROP_POINTER, hi->input->propbit); - set_bit(BTN_TOOL_FINGER, hi->input->keybit); - set_bit(BTN_TOOL_DOUBLETAP, hi->input->keybit); - set_bit(BTN_TOOL_TRIPLETAP, hi->input->keybit); - set_bit(BTN_TOOL_QUADTAP, hi->input->keybit); - } + (usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) + td->mt_flags |= INPUT_MT_POINTER; /* eGalax devices provide a Digitizer.Stylus input which overrides * the correct Digitizers.Finger X/Y ranges. @@ -353,8 +347,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, EV_ABS, ABS_MT_POSITION_X); set_abs(hi->input, ABS_MT_POSITION_X, field, cls->sn_move); - /* touchscreen emulation */ - set_abs(hi->input, ABS_X, field, cls->sn_move); mt_store_field(usage, td, hi); td->last_field_index = field->index; return 1; @@ -363,8 +355,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, EV_ABS, ABS_MT_POSITION_Y); set_abs(hi->input, ABS_MT_POSITION_Y, field, cls->sn_move); - /* touchscreen emulation */ - set_abs(hi->input, ABS_Y, field, cls->sn_move); mt_store_field(usage, td, hi); td->last_field_index = field->index; return 1; @@ -388,9 +378,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, td->last_field_index = field->index; return 1; case HID_DG_CONTACTID: - if (!td->maxcontacts) - td->maxcontacts = MT_DEFAULT_MAXCONTACT; - input_mt_init_slots(hi->input, td->maxcontacts, 0); mt_store_field(usage, td, hi); td->last_field_index = field->index; td->touches_by_report++; @@ -418,9 +405,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, EV_ABS, ABS_MT_PRESSURE); set_abs(hi->input, ABS_MT_PRESSURE, field, cls->sn_pressure); - /* touchscreen emulation */ - set_abs(hi->input, ABS_PRESSURE, field, - cls->sn_pressure); mt_store_field(usage, td, hi); td->last_field_index = field->index; return 1; @@ -536,7 +520,7 @@ static void mt_emit_event(struct mt_device *td, struct input_dev *input) } - input_mt_report_pointer_emulation(input, true); + input_mt_sync_frame(input); input_sync(input); td->num_received = 0; } @@ -685,6 +669,32 @@ static void mt_post_parse(struct mt_device *td) } } +static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi) + +{ + struct mt_device *td = hid_get_drvdata(hdev); + struct mt_class *cls = &td->mtclass; + struct input_dev *input = hi->input; + + /* Only initialize slots for MT input devices */ + if (!test_bit(ABS_MT_POSITION_X, input->absbit)) + return; + + if (!td->maxcontacts) + td->maxcontacts = MT_DEFAULT_MAXCONTACT; + + mt_post_parse(td); + if (td->serial_maybe) + mt_post_parse_default_settings(td); + + if (cls->is_indirect) + td->mt_flags |= INPUT_MT_POINTER; + + input_mt_init_slots(input, td->maxcontacts, td->mt_flags); + + td->mt_flags = 0; +} + static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret, i; @@ -722,6 +732,9 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) goto fail; } + if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) + td->serial_maybe = true; + ret = hid_parse(hdev); if (ret != 0) goto fail; @@ -730,11 +743,6 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) if (ret) goto fail; - mt_post_parse(td); - - if (id->vendor == HID_ANY_ID && id->product == HID_ANY_ID) - mt_post_parse_default_settings(td); - td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), GFP_KERNEL); if (!td->slots) { @@ -1087,6 +1095,7 @@ static struct hid_driver mt_driver = { .remove = mt_remove, .input_mapping = mt_input_mapping, .input_mapped = mt_input_mapped, + .input_configured = mt_input_configured, .feature_mapping = mt_feature_mapping, .usage_table = mt_grabbed_usages, .event = mt_event, -- cgit v0.10.2 From 3e1b5015d94ec0bdfa5bd8c80a19bcba82bc505c Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 1 Sep 2012 19:46:58 +0200 Subject: HID: hid-multitouch: Remove the redundant touch state With the input_mt_sync_frame() function in place, there is no longer any need to keep the full touch state in the driver. This patch removes the slot state and replaces the lookup code with the input-mt equivalent. Reviewed-and-tested-by: Benjamin Tissoires Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 1df86a7..eee19c9 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -56,7 +56,6 @@ struct mt_slot { __s32 x, y, p, w, h; __s32 contactid; /* the device ContactID assigned to this slot */ bool touch_state; /* is the touch valid? */ - bool seen_in_this_frame;/* has this slot been updated */ }; struct mt_class { @@ -94,7 +93,6 @@ struct mt_device { * > 1 means hybrid (multitouch) protocol */ bool serial_maybe; /* need to check for serial protocol */ bool curvalid; /* is the current contact valid? */ - struct mt_slot *slots; unsigned mt_flags; /* flags to pass to input-mt */ }; @@ -136,25 +134,6 @@ static int cypress_compute_slot(struct mt_device *td) return -1; } -static int find_slot_from_contactid(struct mt_device *td) -{ - int i; - for (i = 0; i < td->maxcontacts; ++i) { - if (td->slots[i].contactid == td->curdata.contactid && - td->slots[i].touch_state) - return i; - } - for (i = 0; i < td->maxcontacts; ++i) { - if (!td->slots[i].seen_in_this_frame && - !td->slots[i].touch_state) - return i; - } - /* should not occurs. If this happens that means - * that the device sent more touches that it says - * in the report descriptor. It is ignored then. */ - return -1; -} - static struct mt_class mt_classes[] = { { .name = MT_CLS_DEFAULT, .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP }, @@ -448,7 +427,7 @@ static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi, return -1; } -static int mt_compute_slot(struct mt_device *td) +static int mt_compute_slot(struct mt_device *td, struct input_dev *input) { __s32 quirks = td->mtclass.quirks; @@ -464,42 +443,23 @@ static int mt_compute_slot(struct mt_device *td) if (quirks & MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE) return td->curdata.contactid - 1; - return find_slot_from_contactid(td); + return input_mt_get_slot_by_key(input, td->curdata.contactid); } /* * this function is called when a whole contact has been processed, * so that it can assign it to a slot and store the data there */ -static void mt_complete_slot(struct mt_device *td) +static void mt_complete_slot(struct mt_device *td, struct input_dev *input) { - td->curdata.seen_in_this_frame = true; if (td->curvalid) { - int slotnum = mt_compute_slot(td); - - if (slotnum >= 0 && slotnum < td->maxcontacts) - td->slots[slotnum] = td->curdata; - } - td->num_received++; -} - - -/* - * this function is called when a whole packet has been received and processed, - * so that it can decide what to send to the input layer. - */ -static void mt_emit_event(struct mt_device *td, struct input_dev *input) -{ - int i; + int slotnum = mt_compute_slot(td, input); + struct mt_slot *s = &td->curdata; - for (i = 0; i < td->maxcontacts; ++i) { - struct mt_slot *s = &(td->slots[i]); - if ((td->mtclass.quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) && - !s->seen_in_this_frame) { - s->touch_state = false; - } + if (slotnum < 0 || slotnum >= td->maxcontacts) + return; - input_mt_slot(input, i); + input_mt_slot(input, slotnum); input_mt_report_slot_state(input, MT_TOOL_FINGER, s->touch_state); if (s->touch_state) { @@ -516,24 +476,29 @@ static void mt_emit_event(struct mt_device *td, struct input_dev *input) input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); } - s->seen_in_this_frame = false; - } + td->num_received++; +} + +/* + * this function is called when a whole packet has been received and processed, + * so that it can decide what to send to the input layer. + */ +static void mt_sync_frame(struct mt_device *td, struct input_dev *input) +{ input_mt_sync_frame(input); input_sync(input); td->num_received = 0; } - - static int mt_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) { struct mt_device *td = hid_get_drvdata(hid); __s32 quirks = td->mtclass.quirks; - if (hid->claimed & HID_CLAIMED_INPUT && td->slots) { + if (hid->claimed & HID_CLAIMED_INPUT) { switch (usage->hid) { case HID_DG_INRANGE: if (quirks & MT_QUIRK_ALWAYS_VALID) @@ -586,11 +551,11 @@ static int mt_event(struct hid_device *hid, struct hid_field *field, } if (usage->hid == td->last_slot_field) - mt_complete_slot(td); + mt_complete_slot(td, field->hidinput->input); if (field->index == td->last_field_index && td->num_received >= td->num_expected) - mt_emit_event(td, field->hidinput->input); + mt_sync_frame(td, field->hidinput->input); } @@ -690,6 +655,9 @@ static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi) if (cls->is_indirect) td->mt_flags |= INPUT_MT_POINTER; + if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) + td->mt_flags |= INPUT_MT_DROP_UNUSED; + input_mt_init_slots(input, td->maxcontacts, td->mt_flags); td->mt_flags = 0; @@ -743,15 +711,6 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) if (ret) goto fail; - td->slots = kzalloc(td->maxcontacts * sizeof(struct mt_slot), - GFP_KERNEL); - if (!td->slots) { - dev_err(&hdev->dev, "cannot allocate multitouch slots\n"); - hid_hw_stop(hdev); - ret = -ENOMEM; - goto fail; - } - ret = sysfs_create_group(&hdev->dev.kobj, &mt_attribute_group); mt_set_maxcontacts(hdev); @@ -782,7 +741,6 @@ static void mt_remove(struct hid_device *hdev) struct mt_device *td = hid_get_drvdata(hdev); sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group); hid_hw_stop(hdev); - kfree(td->slots); kfree(td); hid_set_drvdata(hdev, NULL); } -- cgit v0.10.2 From c5d40be5f5255c156a5ad851f395fb21bc44f379 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Wed, 5 Sep 2012 16:58:12 +0200 Subject: HID: hid-multitouch: Fix contact count on 3M panels Some devices report the number of contacts via the unreliable CONTACTCOUNT usage, rather than using the CONTACTMAX feature. Without this patch, the 3M devices are constrained to the default maximum of ten fingers. Cc: Benjamin Tissoires Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index eee19c9..63f120b 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -171,7 +171,9 @@ static struct mt_class mt_classes[] = { MT_QUIRK_SLOT_IS_CONTACTID, .sn_move = 2048, .sn_width = 128, - .sn_height = 128 }, + .sn_height = 128, + .maxcontacts = 60, + }, { .name = MT_CLS_CYPRESS, .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | MT_QUIRK_CYPRESS, -- cgit v0.10.2 From 77723e3bc71a221a732a21700975c066a4ae06e2 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Fri, 7 Sep 2012 19:37:40 +0200 Subject: HID: hid-multitouch: Add Flatfrog support Add support for the Flatfrog Multitouch 3200 panel. This panel advertises some fields that it does not use, hence the new quirk. Cc: Pablo Cases Acked-by: Jiri Kosina Signed-off-by: Henrik Rydberg diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 1dcb76f..c843db9 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -283,6 +283,9 @@ #define USB_VENDOR_ID_EMS 0x2006 #define USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II 0x0118 +#define USB_VENDOR_ID_FLATFROG 0x25b5 +#define USB_DEVICE_ID_MULTITOUCH_3200 0x0002 + #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100 diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 63f120b..ee0b76b 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -51,6 +51,7 @@ MODULE_LICENSE("GPL"); #define MT_QUIRK_VALID_IS_INRANGE (1 << 5) #define MT_QUIRK_VALID_IS_CONFIDENCE (1 << 6) #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE (1 << 8) +#define MT_QUIRK_NO_AREA (1 << 9) struct mt_slot { __s32 x, y, p, w, h; @@ -115,6 +116,7 @@ struct mt_device { #define MT_CLS_EGALAX_SERIAL 0x0104 #define MT_CLS_TOPSEED 0x0105 #define MT_CLS_PANASONIC 0x0106 +#define MT_CLS_FLATFROG 0x0107 #define MT_DEFAULT_MAXCONTACT 10 @@ -199,6 +201,12 @@ static struct mt_class mt_classes[] = { .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP, .maxcontacts = 4 }, + { .name = MT_CLS_FLATFROG, + .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | + MT_QUIRK_NO_AREA, + .sn_move = 2048, + .maxcontacts = 40, + }, { } }; @@ -366,18 +374,21 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi, case HID_DG_WIDTH: hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_TOUCH_MAJOR); - set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, - cls->sn_width); + if (!(cls->quirks & MT_QUIRK_NO_AREA)) + set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field, + cls->sn_width); mt_store_field(usage, td, hi); td->last_field_index = field->index; return 1; case HID_DG_HEIGHT: hid_map_usage(hi, usage, bit, max, EV_ABS, ABS_MT_TOUCH_MINOR); - set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, - cls->sn_height); - input_set_abs_params(hi->input, + if (!(cls->quirks & MT_QUIRK_NO_AREA)) { + set_abs(hi->input, ABS_MT_TOUCH_MINOR, field, + cls->sn_height); + input_set_abs_params(hi->input, ABS_MT_ORIENTATION, 0, 1, 0, 0); + } mt_store_field(usage, td, hi); td->last_field_index = field->index; return 1; @@ -860,6 +871,11 @@ static const struct hid_device_id mt_devices[] = { MT_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2515) }, + /* Flatfrog Panels */ + { .driver_data = MT_CLS_FLATFROG, + MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG, + USB_DEVICE_ID_MULTITOUCH_3200) }, + /* GeneralTouch panel */ { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER, MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, -- cgit v0.10.2 From 43f482b48d0322df7c0cc6f97d0ec7c77db6777b Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Mon, 13 Aug 2012 00:18:44 +0200 Subject: Input: bcm5974 - only setup button urb for TYPE1 devices The early generations with this trackpad used the separate mouse interface to produce button events. With the introduction of the button pads, this information was moved to the trackpad interface, leaving the mouse interface unused. The driver is still setting up both interfaces, which has not caused any problems - until now. It turns out that without the CONFIG_USB_EHCI_TT_NEWSCHED option, the driver may return an ENOSPC upon bt_urb submission, resulting in a failure to open the device. This happens everytime on the MacBookPro Retina (and likely on other mid-2012 models), but earlier MacBook models seem to work fine. This patch skips the bt_urb setup for TYPE2 devices, which arguably should have been done in the first place. Tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index d528c23..39ac9ff 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -742,9 +742,11 @@ static int bcm5974_start_traffic(struct bcm5974 *dev) goto err_out; } - error = usb_submit_urb(dev->bt_urb, GFP_KERNEL); - if (error) - goto err_reset_mode; + if (dev->bt_urb) { + error = usb_submit_urb(dev->bt_urb, GFP_KERNEL); + if (error) + goto err_reset_mode; + } error = usb_submit_urb(dev->tp_urb, GFP_KERNEL); if (error) @@ -868,19 +870,23 @@ static int bcm5974_probe(struct usb_interface *iface, mutex_init(&dev->pm_mutex); /* setup urbs */ - dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->bt_urb) - goto err_free_devs; + if (cfg->tp_type == TYPE1) { + dev->bt_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!dev->bt_urb) + goto err_free_devs; + } dev->tp_urb = usb_alloc_urb(0, GFP_KERNEL); if (!dev->tp_urb) goto err_free_bt_urb; - dev->bt_data = usb_alloc_coherent(dev->udev, + if (dev->bt_urb) { + dev->bt_data = usb_alloc_coherent(dev->udev, dev->cfg.bt_datalen, GFP_KERNEL, &dev->bt_urb->transfer_dma); - if (!dev->bt_data) - goto err_free_urb; + if (!dev->bt_data) + goto err_free_urb; + } dev->tp_data = usb_alloc_coherent(dev->udev, dev->cfg.tp_datalen, GFP_KERNEL, @@ -888,10 +894,11 @@ static int bcm5974_probe(struct usb_interface *iface, if (!dev->tp_data) goto err_free_bt_buffer; - usb_fill_int_urb(dev->bt_urb, udev, - usb_rcvintpipe(udev, cfg->bt_ep), - dev->bt_data, dev->cfg.bt_datalen, - bcm5974_irq_button, dev, 1); + if (dev->bt_urb) + usb_fill_int_urb(dev->bt_urb, udev, + usb_rcvintpipe(udev, cfg->bt_ep), + dev->bt_data, dev->cfg.bt_datalen, + bcm5974_irq_button, dev, 1); usb_fill_int_urb(dev->tp_urb, udev, usb_rcvintpipe(udev, cfg->tp_ep), @@ -929,8 +936,9 @@ err_free_buffer: usb_free_coherent(dev->udev, dev->cfg.tp_datalen, dev->tp_data, dev->tp_urb->transfer_dma); err_free_bt_buffer: - usb_free_coherent(dev->udev, dev->cfg.bt_datalen, - dev->bt_data, dev->bt_urb->transfer_dma); + if (dev->bt_urb) + usb_free_coherent(dev->udev, dev->cfg.bt_datalen, + dev->bt_data, dev->bt_urb->transfer_dma); err_free_urb: usb_free_urb(dev->tp_urb); err_free_bt_urb: @@ -951,8 +959,9 @@ static void bcm5974_disconnect(struct usb_interface *iface) input_unregister_device(dev->input); usb_free_coherent(dev->udev, dev->cfg.tp_datalen, dev->tp_data, dev->tp_urb->transfer_dma); - usb_free_coherent(dev->udev, dev->cfg.bt_datalen, - dev->bt_data, dev->bt_urb->transfer_dma); + if (dev->bt_urb) + usb_free_coherent(dev->udev, dev->cfg.bt_datalen, + dev->bt_data, dev->bt_urb->transfer_dma); usb_free_urb(dev->tp_urb); usb_free_urb(dev->bt_urb); kfree(dev); -- cgit v0.10.2 From f17953abc92a7d536f4b9b9ce42cf8e07d8d3489 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sun, 12 Aug 2012 21:21:59 +0200 Subject: Input: bcm5974 - Preparatory renames Rename touch properties to match established nomenclature, and define the maximum number of fingers. Tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index 39ac9ff..2de974c 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -183,18 +183,19 @@ struct tp_finger { __le16 abs_y; /* absolute y coodinate */ __le16 rel_x; /* relative x coodinate */ __le16 rel_y; /* relative y coodinate */ - __le16 size_major; /* finger size, major axis? */ - __le16 size_minor; /* finger size, minor axis? */ + __le16 tool_major; /* tool area, major axis */ + __le16 tool_minor; /* tool area, minor axis */ __le16 orientation; /* 16384 when point, else 15 bit angle */ - __le16 force_major; /* trackpad force, major axis? */ - __le16 force_minor; /* trackpad force, minor axis? */ + __le16 touch_major; /* touch area, major axis */ + __le16 touch_minor; /* touch area, minor axis */ __le16 unused[3]; /* zeros */ __le16 multi; /* one finger: varies, more fingers: constant */ } __attribute__((packed,aligned(2))); /* trackpad finger data size, empirically at least ten fingers */ +#define MAX_FINGERS 16 #define SIZEOF_FINGER sizeof(struct tp_finger) -#define SIZEOF_ALL_FINGERS (16 * SIZEOF_FINGER) +#define SIZEOF_ALL_FINGERS (MAX_FINGERS * SIZEOF_FINGER) #define MAX_FINGER_ORIENTATION 16384 /* device-specific parameters */ @@ -482,13 +483,13 @@ static void report_finger_data(struct input_dev *input, const struct tp_finger *f) { input_report_abs(input, ABS_MT_TOUCH_MAJOR, - raw2int(f->force_major) << 1); + raw2int(f->touch_major) << 1); input_report_abs(input, ABS_MT_TOUCH_MINOR, - raw2int(f->force_minor) << 1); + raw2int(f->touch_minor) << 1); input_report_abs(input, ABS_MT_WIDTH_MAJOR, - raw2int(f->size_major) << 1); + raw2int(f->tool_major) << 1); input_report_abs(input, ABS_MT_WIDTH_MINOR, - raw2int(f->size_minor) << 1); + raw2int(f->tool_minor) << 1); input_report_abs(input, ABS_MT_ORIENTATION, MAX_FINGER_ORIENTATION - raw2int(f->orientation)); input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x)); @@ -521,8 +522,8 @@ static int report_tp_state(struct bcm5974 *dev, int size) for (i = 0; i < raw_n; i++) report_finger_data(input, c, &f[i]); - raw_p = raw2int(f->force_major); - raw_w = raw2int(f->size_major); + raw_p = raw2int(f->touch_major); + raw_w = raw2int(f->tool_major); raw_x = raw2int(f->abs_x); raw_y = raw2int(f->abs_y); @@ -542,7 +543,7 @@ static int report_tp_state(struct bcm5974 *dev, int size) abs_y = int2bound(&c->y, c->y.devmax - raw_y); while (raw_n--) { ptest = int2bound(&c->p, - raw2int(f->force_major)); + raw2int(f->touch_major)); if (ptest > PRESSURE_LOW) nmax++; if (ptest > PRESSURE_HIGH) -- cgit v0.10.2 From 0e7269669d4cd14a49b4e5c708b8be0ba11504f7 Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 15 Sep 2012 09:49:51 +0200 Subject: Input: bcm5974 - Drop the logical dimensions The logical scale is used to produce special finger width values to userspace, but has become an unnecessary restriction for everything else. Also, the bcm5974 trackpads are very accurate and work well without hysteresis. This patch simplifies the driver and device data by removing the logical scale, and by moving the special synaptics code out of the main path. Also add the orientation range, needed in a subsequent patch, to the device configuration. Tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index 2de974c..e8cfb38 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -200,10 +200,9 @@ struct tp_finger { /* device-specific parameters */ struct bcm5974_param { - int dim; /* logical dimension */ - int fuzz; /* logical noise value */ - int devmin; /* device minimum reading */ - int devmax; /* device maximum reading */ + int snratio; /* signal-to-noise ratio */ + int min; /* device minimum reading */ + int max; /* device maximum reading */ }; /* device-specific configuration */ @@ -220,6 +219,7 @@ struct bcm5974_config { struct bcm5974_param w; /* finger width limits */ struct bcm5974_param x; /* horizontal limits */ struct bcm5974_param y; /* vertical limits */ + struct bcm5974_param o; /* orientation limits */ }; /* logical device structure */ @@ -235,23 +235,13 @@ struct bcm5974 { struct bt_data *bt_data; /* button transferred data */ struct urb *tp_urb; /* trackpad usb request block */ u8 *tp_data; /* trackpad transferred data */ - int fingers; /* number of fingers on trackpad */ }; -/* logical dimensions */ -#define DIM_PRESSURE 256 /* maximum finger pressure */ -#define DIM_WIDTH 16 /* maximum finger width */ -#define DIM_X 1280 /* maximum trackpad x value */ -#define DIM_Y 800 /* maximum trackpad y value */ - /* logical signal quality */ #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ #define SN_WIDTH 100 /* width signal-to-noise ratio */ #define SN_COORD 250 /* coordinate signal-to-noise ratio */ - -/* pressure thresholds */ -#define PRESSURE_LOW (2 * DIM_PRESSURE / SN_PRESSURE) -#define PRESSURE_HIGH (3 * PRESSURE_LOW) +#define SN_ORIENT 10 /* orientation signal-to-noise ratio */ /* device constants */ static const struct bcm5974_config bcm5974_config_table[] = { @@ -262,10 +252,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { 0, 0x84, sizeof(struct bt_data), 0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4824, 5342 }, - { DIM_Y, DIM_Y / SN_COORD, -172, 5820 } + { SN_PRESSURE, 0, 256 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4824, 5342 }, + { SN_COORD, -172, 5820 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI, @@ -274,10 +265,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { 0, 0x84, sizeof(struct bt_data), 0x81, TYPE1, FINGER_TYPE1, FINGER_TYPE1 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 256 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4824, 4824 }, - { DIM_Y, DIM_Y / SN_COORD, -172, 4290 } + { SN_PRESSURE, 0, 256 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4824, 4824 }, + { SN_COORD, -172, 4290 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI, @@ -286,10 +278,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4460, 5166 }, - { DIM_Y, DIM_Y / SN_COORD, -75, 6700 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4460, 5166 }, + { SN_COORD, -75, 6700 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI, @@ -298,10 +291,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4620, 5140 }, + { SN_COORD, -150, 6600 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI, @@ -310,10 +304,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4616, 5112 }, - { DIM_Y, DIM_Y / SN_COORD, -142, 5234 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4616, 5112 }, + { SN_COORD, -142, 5234 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI, @@ -322,10 +317,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4415, 5050 }, - { DIM_Y, DIM_Y / SN_COORD, -55, 6680 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4415, 5050 }, + { SN_COORD, -55, 6680 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI, @@ -334,10 +330,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4620, 5140 }, + { SN_COORD, -150, 6600 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI, @@ -346,10 +343,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4750, 5280 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6730 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4750, 5280 }, + { SN_COORD, -150, 6730 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI, @@ -358,10 +356,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4620, 5140 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6600 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4620, 5140 }, + { SN_COORD, -150, 6600 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, { USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI, @@ -370,10 +369,11 @@ static const struct bcm5974_config bcm5974_config_table[] = { HAS_INTEGRATED_BUTTON, 0x84, sizeof(struct bt_data), 0x81, TYPE2, FINGER_TYPE2, FINGER_TYPE2 + SIZEOF_ALL_FINGERS, - { DIM_PRESSURE, DIM_PRESSURE / SN_PRESSURE, 0, 300 }, - { DIM_WIDTH, DIM_WIDTH / SN_WIDTH, 0, 2048 }, - { DIM_X, DIM_X / SN_COORD, -4750, 5280 }, - { DIM_Y, DIM_Y / SN_COORD, -150, 6730 } + { SN_PRESSURE, 0, 300 }, + { SN_WIDTH, 0, 2048 }, + { SN_COORD, -4750, 5280 }, + { SN_COORD, -150, 6730 }, + { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION } }, {} }; @@ -397,18 +397,11 @@ static inline int raw2int(__le16 x) return (signed short)le16_to_cpu(x); } -/* scale device data to logical dimensions (asserts devmin < devmax) */ -static inline int int2scale(const struct bcm5974_param *p, int x) +static void set_abs(struct input_dev *input, unsigned int code, + const struct bcm5974_param *p) { - return x * p->dim / (p->devmax - p->devmin); -} - -/* all logical value ranges are [0,dim). */ -static inline int int2bound(const struct bcm5974_param *p, int x) -{ - int s = int2scale(p, x); - - return clamp_val(s, 0, p->dim - 1); + int fuzz = p->snratio ? (p->max - p->min) / p->snratio : 0; + input_set_abs_params(input, code, p->min, p->max, fuzz, 0); } /* setup which logical events to report */ @@ -417,34 +410,25 @@ static void setup_events_to_report(struct input_dev *input_dev, { __set_bit(EV_ABS, input_dev->evbit); - input_set_abs_params(input_dev, ABS_PRESSURE, - 0, cfg->p.dim, cfg->p.fuzz, 0); - input_set_abs_params(input_dev, ABS_TOOL_WIDTH, - 0, cfg->w.dim, cfg->w.fuzz, 0); - input_set_abs_params(input_dev, ABS_X, - 0, cfg->x.dim, cfg->x.fuzz, 0); - input_set_abs_params(input_dev, ABS_Y, - 0, cfg->y.dim, cfg->y.fuzz, 0); + /* for synaptics only */ + input_set_abs_params(input_dev, ABS_PRESSURE, 0, 256, 5, 0); + input_set_abs_params(input_dev, ABS_TOOL_WIDTH, 0, 16, 0, 0); + + /* pointer emulation */ + set_abs(input_dev, ABS_X, &cfg->x); + set_abs(input_dev, ABS_Y, &cfg->y); /* finger touch area */ - input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); - input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); + set_abs(input_dev, ABS_MT_TOUCH_MAJOR, &cfg->w); + set_abs(input_dev, ABS_MT_TOUCH_MINOR, &cfg->w); /* finger approach area */ - input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); - input_set_abs_params(input_dev, ABS_MT_WIDTH_MINOR, - cfg->w.devmin, cfg->w.devmax, 0, 0); + set_abs(input_dev, ABS_MT_WIDTH_MAJOR, &cfg->w); + set_abs(input_dev, ABS_MT_WIDTH_MINOR, &cfg->w); /* finger orientation */ - input_set_abs_params(input_dev, ABS_MT_ORIENTATION, - -MAX_FINGER_ORIENTATION, - MAX_FINGER_ORIENTATION, 0, 0); + set_abs(input_dev, ABS_MT_ORIENTATION, &cfg->o); /* finger position */ - input_set_abs_params(input_dev, ABS_MT_POSITION_X, - cfg->x.devmin, cfg->x.devmax, 0, 0); - input_set_abs_params(input_dev, ABS_MT_POSITION_Y, - cfg->y.devmin, cfg->y.devmax, 0, 0); + set_abs(input_dev, ABS_MT_POSITION_X, &cfg->x); + set_abs(input_dev, ABS_MT_POSITION_Y, &cfg->y); __set_bit(EV_KEY, input_dev->evbit); __set_bit(BTN_TOUCH, input_dev->keybit); @@ -494,19 +478,37 @@ static void report_finger_data(struct input_dev *input, MAX_FINGER_ORIENTATION - raw2int(f->orientation)); input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x)); input_report_abs(input, ABS_MT_POSITION_Y, - cfg->y.devmin + cfg->y.devmax - raw2int(f->abs_y)); + cfg->y.min + cfg->y.max - raw2int(f->abs_y)); input_mt_sync(input); } +static void report_synaptics_data(struct input_dev *input, + const struct bcm5974_config *cfg, + const struct tp_finger *f, int raw_n) +{ + int abs_p = 0, abs_w = 0; + + if (raw_n) { + int p = raw2int(f->touch_major); + int w = raw2int(f->tool_major); + if (p > 0 && raw2int(f->origin)) { + abs_p = clamp_val(256 * p / cfg->p.max, 0, 255); + abs_w = clamp_val(16 * w / cfg->w.max, 0, 15); + } + } + + input_report_abs(input, ABS_PRESSURE, abs_p); + input_report_abs(input, ABS_TOOL_WIDTH, abs_w); +} + /* report trackpad data as logical trackpad state */ static int report_tp_state(struct bcm5974 *dev, int size) { const struct bcm5974_config *c = &dev->cfg; const struct tp_finger *f; struct input_dev *input = dev->input; - int raw_p, raw_w, raw_x, raw_y, raw_n, i; - int ptest, origin, ibt = 0, nmin = 0, nmax = 0; - int abs_p = 0, abs_w = 0, abs_x = 0, abs_y = 0; + int raw_n, i; + int abs_x = 0, abs_y = 0, n = 0; if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0) return -EIO; @@ -522,69 +524,34 @@ static int report_tp_state(struct bcm5974 *dev, int size) for (i = 0; i < raw_n; i++) report_finger_data(input, c, &f[i]); - raw_p = raw2int(f->touch_major); - raw_w = raw2int(f->tool_major); - raw_x = raw2int(f->abs_x); - raw_y = raw2int(f->abs_y); - - dprintk(9, - "bcm5974: " - "raw: p: %+05d w: %+05d x: %+05d y: %+05d n: %d\n", - raw_p, raw_w, raw_x, raw_y, raw_n); - - ptest = int2bound(&c->p, raw_p); - origin = raw2int(f->origin); - /* while tracking finger still valid, count all fingers */ - if (ptest > PRESSURE_LOW && origin) { - abs_p = ptest; - abs_w = int2bound(&c->w, raw_w); - abs_x = int2bound(&c->x, raw_x - c->x.devmin); - abs_y = int2bound(&c->y, c->y.devmax - raw_y); - while (raw_n--) { - ptest = int2bound(&c->p, - raw2int(f->touch_major)); - if (ptest > PRESSURE_LOW) - nmax++; - if (ptest > PRESSURE_HIGH) - nmin++; - f++; - } + if (raw2int(f->touch_major) > 0 && raw2int(f->origin)) { + abs_x = raw2int(f->abs_x); + abs_y = c->y.min + c->y.max - raw2int(f->abs_y); + for (i = 0; i < raw_n; i++) + if (raw2int(f[i].touch_major) > 0) + n++; } } - /* set the integrated button if applicable */ - if (c->tp_type == TYPE2) - ibt = raw2int(dev->tp_data[BUTTON_TYPE2]); - - if (dev->fingers < nmin) - dev->fingers = nmin; - if (dev->fingers > nmax) - dev->fingers = nmax; + input_report_key(input, BTN_TOUCH, n > 0); + input_report_key(input, BTN_TOOL_FINGER, n == 1); + input_report_key(input, BTN_TOOL_DOUBLETAP, n == 2); + input_report_key(input, BTN_TOOL_TRIPLETAP, n == 3); + input_report_key(input, BTN_TOOL_QUADTAP, n > 3); - input_report_key(input, BTN_TOUCH, dev->fingers > 0); - input_report_key(input, BTN_TOOL_FINGER, dev->fingers == 1); - input_report_key(input, BTN_TOOL_DOUBLETAP, dev->fingers == 2); - input_report_key(input, BTN_TOOL_TRIPLETAP, dev->fingers == 3); - input_report_key(input, BTN_TOOL_QUADTAP, dev->fingers > 3); + report_synaptics_data(input, c, f, raw_n); - input_report_abs(input, ABS_PRESSURE, abs_p); - input_report_abs(input, ABS_TOOL_WIDTH, abs_w); - - if (abs_p) { + if (n > 0) { input_report_abs(input, ABS_X, abs_x); input_report_abs(input, ABS_Y, abs_y); - - dprintk(8, - "bcm5974: abs: p: %+05d w: %+05d x: %+05d y: %+05d " - "nmin: %d nmax: %d n: %d ibt: %d\n", abs_p, abs_w, - abs_x, abs_y, nmin, nmax, dev->fingers, ibt); - } /* type 2 reports button events via ibt only */ - if (c->tp_type == TYPE2) + if (c->tp_type == TYPE2) { + int ibt = raw2int(dev->tp_data[BUTTON_TYPE2]); input_report_key(input, BTN_LEFT, ibt); + } input_sync(input); -- cgit v0.10.2 From 51c80b74002f86477d691ed7c8ac479dcfa6271c Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sat, 15 Sep 2012 16:40:04 +0200 Subject: Input: bcm5974 - Convert to MT-B Use of the in-kernel tracking code to convert the driver to MT-B. With ten fingers on the pad, the in-kernel tracking adds approximately 25 us to the maximum irqsoff latency. Under normal workloads, however, the tracking has no measurable effect. Tested-by: Benjamin Tissoires Acked-by: Dmitry Torokhov Signed-off-by: Henrik Rydberg diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index e8cfb38..3a78f23 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -40,6 +40,7 @@ #include #include #include +#include #define USB_VENDOR_ID_APPLE 0x05ac @@ -235,11 +236,14 @@ struct bcm5974 { struct bt_data *bt_data; /* button transferred data */ struct urb *tp_urb; /* trackpad usb request block */ u8 *tp_data; /* trackpad transferred data */ + const struct tp_finger *index[MAX_FINGERS]; /* finger index data */ + struct input_mt_pos pos[MAX_FINGERS]; /* position array */ + int slots[MAX_FINGERS]; /* slot assignments */ }; /* logical signal quality */ #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ -#define SN_WIDTH 100 /* width signal-to-noise ratio */ +#define SN_WIDTH 25 /* width signal-to-noise ratio */ #define SN_COORD 250 /* coordinate signal-to-noise ratio */ #define SN_ORIENT 10 /* orientation signal-to-noise ratio */ @@ -414,10 +418,6 @@ static void setup_events_to_report(struct input_dev *input_dev, input_set_abs_params(input_dev, ABS_PRESSURE, 0, 256, 5, 0); input_set_abs_params(input_dev, ABS_TOOL_WIDTH, 0, 16, 0, 0); - /* pointer emulation */ - set_abs(input_dev, ABS_X, &cfg->x); - set_abs(input_dev, ABS_Y, &cfg->y); - /* finger touch area */ set_abs(input_dev, ABS_MT_TOUCH_MAJOR, &cfg->w); set_abs(input_dev, ABS_MT_TOUCH_MINOR, &cfg->w); @@ -431,18 +431,13 @@ static void setup_events_to_report(struct input_dev *input_dev, set_abs(input_dev, ABS_MT_POSITION_Y, &cfg->y); __set_bit(EV_KEY, input_dev->evbit); - __set_bit(BTN_TOUCH, input_dev->keybit); - __set_bit(BTN_TOOL_FINGER, input_dev->keybit); - __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); - __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); - __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); __set_bit(BTN_LEFT, input_dev->keybit); - __set_bit(INPUT_PROP_POINTER, input_dev->propbit); if (cfg->caps & HAS_INTEGRATED_BUTTON) __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); - input_set_events_per_packet(input_dev, 60); + input_mt_init_slots(input_dev, MAX_FINGERS, + INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); } /* report button data as logical button state */ @@ -462,10 +457,13 @@ static int report_bt_state(struct bcm5974 *dev, int size) return 0; } -static void report_finger_data(struct input_dev *input, - const struct bcm5974_config *cfg, +static void report_finger_data(struct input_dev *input, int slot, + const struct input_mt_pos *pos, const struct tp_finger *f) { + input_mt_slot(input, slot); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + input_report_abs(input, ABS_MT_TOUCH_MAJOR, raw2int(f->touch_major) << 1); input_report_abs(input, ABS_MT_TOUCH_MINOR, @@ -476,10 +474,8 @@ static void report_finger_data(struct input_dev *input, raw2int(f->tool_minor) << 1); input_report_abs(input, ABS_MT_ORIENTATION, MAX_FINGER_ORIENTATION - raw2int(f->orientation)); - input_report_abs(input, ABS_MT_POSITION_X, raw2int(f->abs_x)); - input_report_abs(input, ABS_MT_POSITION_Y, - cfg->y.min + cfg->y.max - raw2int(f->abs_y)); - input_mt_sync(input); + input_report_abs(input, ABS_MT_POSITION_X, pos->x); + input_report_abs(input, ABS_MT_POSITION_Y, pos->y); } static void report_synaptics_data(struct input_dev *input, @@ -507,8 +503,7 @@ static int report_tp_state(struct bcm5974 *dev, int size) const struct bcm5974_config *c = &dev->cfg; const struct tp_finger *f; struct input_dev *input = dev->input; - int raw_n, i; - int abs_x = 0, abs_y = 0, n = 0; + int raw_n, i, n = 0; if (size < c->tp_offset || (size - c->tp_offset) % SIZEOF_FINGER != 0) return -EIO; @@ -517,35 +512,23 @@ static int report_tp_state(struct bcm5974 *dev, int size) f = (const struct tp_finger *)(dev->tp_data + c->tp_offset); raw_n = (size - c->tp_offset) / SIZEOF_FINGER; - /* always track the first finger; when detached, start over */ - if (raw_n) { - - /* report raw trackpad data */ - for (i = 0; i < raw_n; i++) - report_finger_data(input, c, &f[i]); - - /* while tracking finger still valid, count all fingers */ - if (raw2int(f->touch_major) > 0 && raw2int(f->origin)) { - abs_x = raw2int(f->abs_x); - abs_y = c->y.min + c->y.max - raw2int(f->abs_y); - for (i = 0; i < raw_n; i++) - if (raw2int(f[i].touch_major) > 0) - n++; - } + for (i = 0; i < raw_n; i++) { + if (raw2int(f[i].touch_major) == 0) + continue; + dev->pos[n].x = raw2int(f[i].abs_x); + dev->pos[n].y = c->y.min + c->y.max - raw2int(f[i].abs_y); + dev->index[n++] = &f[i]; } - input_report_key(input, BTN_TOUCH, n > 0); - input_report_key(input, BTN_TOOL_FINGER, n == 1); - input_report_key(input, BTN_TOOL_DOUBLETAP, n == 2); - input_report_key(input, BTN_TOOL_TRIPLETAP, n == 3); - input_report_key(input, BTN_TOOL_QUADTAP, n > 3); + input_mt_assign_slots(input, dev->slots, dev->pos, n); - report_synaptics_data(input, c, f, raw_n); + for (i = 0; i < n; i++) + report_finger_data(input, dev->slots[i], + &dev->pos[i], dev->index[i]); - if (n > 0) { - input_report_abs(input, ABS_X, abs_x); - input_report_abs(input, ABS_Y, abs_y); - } + input_mt_sync_frame(input); + + report_synaptics_data(input, c, f, raw_n); /* type 2 reports button events via ibt only */ if (c->tp_type == TYPE2) { -- cgit v0.10.2 From 4e90495498cc6f1aa15e7667a695908860938b3e Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Wed, 3 Oct 2012 17:19:11 -0700 Subject: Input: wacom - report correct touch contact size for I5/Bamboo This changes how the touch packets for Intuos5 and 3rd-gen Bamboo are interpreted, so that proper values for the MAJOR and MINOR axes are reported. Instead of using the amplitude field (data[6]), we use the size field (data[5]) and do some calculation to transform it from a scaled-down area into axis lengths. Note that even though we assume a circular contact, both MAJOR and MINOR are reported since the resolution of the X and Y axes differ. Signed-off-by: Jason Gerecke Reviewed-by: Chris Bagwell Acked-by: Ping Cheng Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 2a81ce3..ea4068b 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -25,6 +25,11 @@ #define WACOM_INTUOS_RES 100 #define WACOM_INTUOS3_RES 200 +/* Scale factor relating reported contact size to logical contact area. + * 2^14/pi is a good approximation on Intuos5 and 3rd-gen Bamboo + */ +#define WACOM_CONTACT_AREA_SCALE 2607 + static int wacom_penpartner_irq(struct wacom_wac *wacom) { unsigned char *data = wacom->data; @@ -1043,11 +1048,19 @@ static void wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data) if (touch) { int x = (data[2] << 4) | (data[4] >> 4); int y = (data[3] << 4) | (data[4] & 0x0f); - int w = data[6]; + int a = data[5]; + + // "a" is a scaled-down area which we assume is roughly + // circular and which can be described as: a=(pi*r^2)/C. + int x_res = input_abs_get_res(input, ABS_X); + int y_res = input_abs_get_res(input, ABS_Y); + int width = 2 * int_sqrt(a * WACOM_CONTACT_AREA_SCALE); + int height = width * y_res / x_res; input_report_abs(input, ABS_MT_POSITION_X, x); input_report_abs(input, ABS_MT_POSITION_Y, y); - input_report_abs(input, ABS_MT_TOUCH_MAJOR, w); + input_report_abs(input, ABS_MT_TOUCH_MAJOR, width); + input_report_abs(input, ABS_MT_TOUCH_MINOR, height); } } @@ -1533,7 +1546,9 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev, input_mt_init_slots(input_dev, features->touch_max, 0); input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, - 0, 255, 0, 0); + 0, features->x_max, 0, 0); + input_set_abs_params(input_dev, ABS_MT_TOUCH_MINOR, + 0, features->y_max, 0, 0); input_set_abs_params(input_dev, ABS_MT_POSITION_X, 0, features->x_max, @@ -1641,7 +1656,10 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev, input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, - 0, 255, 0, 0); + 0, features->x_max, 0, 0); + input_set_abs_params(input_dev, + ABS_MT_TOUCH_MINOR, + 0, features->y_max, 0, 0); } input_set_abs_params(input_dev, ABS_MT_POSITION_X, -- cgit v0.10.2 From 9d336daf3b502f594ce18d26a3a009adb2cf3729 Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Wed, 3 Oct 2012 17:19:50 -0700 Subject: Input: wacom - allow any multi-input Intuos device to set prox The ability to set the proximity flag should apply to any device that has both pen and touch input. Rather than listing classes of devices known to meet this criteria, simply filter on the quirk defining all such devices. Signed-off-by: Jason Gerecke Tested-by: Ping Cheng Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index ea4068b..b989bbf 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -331,7 +331,7 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) /* Enter report */ if ((data[1] & 0xfc) == 0xc0) { - if (features->type >= INTUOS5S && features->type <= INTUOS5L) + if (features->quirks == WACOM_QUIRK_MULTI_INPUT) wacom->shared->stylus_in_proximity = true; /* serial number of the tool */ @@ -419,7 +419,7 @@ static int wacom_intuos_inout(struct wacom_wac *wacom) /* Exit report */ if ((data[1] & 0xfe) == 0x80) { - if (features->type >= INTUOS5S && features->type <= INTUOS5L) + if (features->quirks == WACOM_QUIRK_MULTI_INPUT) wacom->shared->stylus_in_proximity = false; /* -- cgit v0.10.2 From 115d5e12a7d5fe62076f9dcc728905196162d709 Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Wed, 3 Oct 2012 17:24:32 -0700 Subject: Input: wacom - introduce wacom_fix_phy_from_hid The Cintiq 24HD touch cannot use wacom_set_phy_from_res to determine the physical size of the touch sensor since the pen and touch are on separate USB devices. The physical size is, however, provided in the HID descriptor, just scaled to a unit we don't use. This patch introduces the function wacom_fix_phy_from_hid to let us make use of the unit and exponent data provided by HID to set the [xy]_phy variables to an appropriate value. This function relies on a trimmed-down version of hidinput_calc_abs_res from the hid-input.c. Signed-off-by: Jason Gerecke Tested-by: Ping Cheng Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 0d3219f..b44bba2 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -172,6 +172,76 @@ static void wacom_close(struct input_dev *dev) } /* + * Calculate the resolution of the X or Y axis, given appropriate HID data. + * This function is little more than hidinput_calc_abs_res stripped down. + */ +static int wacom_calc_hid_res(int logical_extents, int physical_extents, + unsigned char unit, unsigned char exponent) +{ + int prev, unit_exponent; + + /* Check if the extents are sane */ + if (logical_extents <= 0 || physical_extents <= 0) + return 0; + + /* Get signed value of nybble-sized twos-compliment exponent */ + unit_exponent = exponent; + if (unit_exponent > 7) + unit_exponent -= 16; + + /* Convert physical_extents to millimeters */ + if (unit == 0x11) { /* If centimeters */ + unit_exponent += 1; + } else if (unit == 0x13) { /* If inches */ + prev = physical_extents; + physical_extents *= 254; + if (physical_extents < prev) + return 0; + unit_exponent -= 1; + } else { + return 0; + } + + /* Apply negative unit exponent */ + for (; unit_exponent < 0; unit_exponent++) { + prev = logical_extents; + logical_extents *= 10; + if (logical_extents < prev) + return 0; + } + /* Apply positive unit exponent */ + for (; unit_exponent > 0; unit_exponent--) { + prev = physical_extents; + physical_extents *= 10; + if (physical_extents < prev) + return 0; + } + + /* Calculate resolution */ + return logical_extents / physical_extents; +} + +/* + * The physical dimension specified by the HID descriptor is likely not in + * the "100th of a mm" units expected by wacom_calculate_touch_res. This + * function adjusts the value of [xy]_phy based on the unit and exponent + * provided by the HID descriptor. If an error occurs durring conversion + * (e.g. from the unit being left unspecified) [xy]_phy is not modified. + */ +static void wacom_fix_phy_from_hid(struct wacom_features *features) +{ + int xres = wacom_calc_hid_res(features->x_max, features->x_phy, + features->unit, features->unitExpo); + int yres = wacom_calc_hid_res(features->y_max, features->y_phy, + features->unit, features->unitExpo); + + if (xres > 0 && yres > 0) { + features->x_phy = (100 * features->x_max) / xres; + features->y_phy = (100 * features->y_max) / yres; + } +} + +/* * Static values for max X/Y and resolution of Pen interface is stored in * features. This mean physical size of active area can be computed. * This is useful to do when Pen and Touch have same active area of tablet. @@ -531,6 +601,7 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf, error = wacom_parse_hid(intf, hid_desc, features); if (error) goto out; + wacom_fix_phy_from_hid(features); out: return error; -- cgit v0.10.2 From fe494bc2f6e47f02a78ec4761117187db40381a6 Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Wed, 3 Oct 2012 17:25:35 -0700 Subject: Input: wacom - clean up wacom_query_tablet_data Rewrites this function to be easier to read and understand. The new function 'wacom_set_device_mode' now handles the grunt work of assembling the proper feature report, sending it to the device, and ensuring the setting "sticks". Signed-off-by: Jason Gerecke Tested-by: Ping Cheng Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index b44bba2..9edf980 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -502,56 +502,52 @@ static int wacom_parse_hid(struct usb_interface *intf, return result; } -static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features) +static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int length, int mode) { unsigned char *rep_data; - int limit = 0, report_id = 2; - int error = -ENOMEM; + int error = -ENOMEM, limit = 0; - rep_data = kmalloc(4, GFP_KERNEL); + rep_data = kzalloc(length, GFP_KERNEL); if (!rep_data) return error; - /* ask to report Wacom data */ + rep_data[0] = report_id; + rep_data[1] = mode; + + do { + error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, + report_id, rep_data, length, 1); + if (error >= 0) + error = wacom_get_report(intf, WAC_HID_FEATURE_REPORT, + report_id, rep_data, length, 1); + } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES); + + kfree(rep_data); + + return error < 0 ? error : 0; +} + +/* + * Switch the tablet into its most-capable mode. Wacom tablets are + * typically configured to power-up in a mode which sends mouse-like + * reports to the OS. To get absolute position, pressure data, etc. + * from the tablet, it is necessary to switch the tablet out of this + * mode and into one which sends the full range of tablet data. + */ +static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features) +{ if (features->device_type == BTN_TOOL_FINGER) { - /* if it is an MT Tablet PC touch */ if (features->type > TABLETPC) { - do { - rep_data[0] = 3; - rep_data[1] = 4; - rep_data[2] = 0; - rep_data[3] = 0; - report_id = 3; - error = wacom_set_report(intf, - WAC_HID_FEATURE_REPORT, - report_id, - rep_data, 4, 1); - if (error >= 0) - error = wacom_get_report(intf, - WAC_HID_FEATURE_REPORT, - report_id, - rep_data, 4, 1); - } while ((error < 0 || rep_data[1] != 4) && - limit++ < WAC_MSG_RETRIES); + /* MT Tablet PC touch */ + return wacom_set_device_mode(intf, 3, 4, 4); + } + } else if (features->device_type == BTN_TOOL_PEN) { + if (features->type <= BAMBOO_PT && features->type != WIRELESS) { + return wacom_set_device_mode(intf, 2, 2, 2); } - } else if (features->type <= BAMBOO_PT && - features->type != WIRELESS && - features->device_type == BTN_TOOL_PEN) { - do { - rep_data[0] = 2; - rep_data[1] = 2; - error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, - report_id, rep_data, 2, 1); - if (error >= 0) - error = wacom_get_report(intf, - WAC_HID_FEATURE_REPORT, - report_id, rep_data, 2, 1); - } while ((error < 0 || rep_data[1] != 2) && limit++ < WAC_MSG_RETRIES); } - kfree(rep_data); - - return error < 0 ? error : 0; + return 0; } static int wacom_retrieve_hid_descriptor(struct usb_interface *intf, -- cgit v0.10.2 From eb007c8677a9b00e6bd24d1c3e161b3209fcd3be Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Thu, 4 Oct 2012 00:02:59 -0700 Subject: Input: atmel_mxt_ts - simplify mxt_dump_message Use %*ph format specifier to print small buffer. Signed-off-by: Andy Shevchenko Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index e92615d..1df2396 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -320,10 +320,8 @@ static bool mxt_object_writable(unsigned int type) static void mxt_dump_message(struct device *dev, struct mxt_message *message) { - dev_dbg(dev, "reportid: %u\tmessage: %02x %02x %02x %02x %02x %02x %02x\n", - message->reportid, message->message[0], message->message[1], - message->message[2], message->message[3], message->message[4], - message->message[5], message->message[6]); + dev_dbg(dev, "reportid: %u\tmessage: %*ph\n", + message->reportid, 7, message->message); } static int mxt_check_bootloader(struct i2c_client *client, -- cgit v0.10.2 From aba828cee24f48bc93a661aaa18caea301786f3e Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Thu, 4 Oct 2012 00:03:49 -0700 Subject: Input: samsung-keypad - add clk_prepare and clk_unprepare Add calls to clk_prepare and clk_unprepare as required by commom clock framework. Signed-off-by: Thomas Abraham Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/keyboard/samsung-keypad.c b/drivers/input/keyboard/samsung-keypad.c index 277e26d..9d7a111 100644 --- a/drivers/input/keyboard/samsung-keypad.c +++ b/drivers/input/keyboard/samsung-keypad.c @@ -431,6 +431,12 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev) goto err_unmap_base; } + error = clk_prepare(keypad->clk); + if (error) { + dev_err(&pdev->dev, "keypad clock prepare failed\n"); + goto err_put_clk; + } + keypad->input_dev = input_dev; keypad->pdev = pdev; keypad->row_shift = row_shift; @@ -461,7 +467,7 @@ static int __devinit samsung_keypad_probe(struct platform_device *pdev) keypad->keycodes, input_dev); if (error) { dev_err(&pdev->dev, "failed to build keymap\n"); - goto err_put_clk; + goto err_unprepare_clk; } input_set_capability(input_dev, EV_MSC, MSC_SCAN); @@ -503,6 +509,8 @@ err_free_irq: pm_runtime_disable(&pdev->dev); device_init_wakeup(&pdev->dev, 0); platform_set_drvdata(pdev, NULL); +err_unprepare_clk: + clk_unprepare(keypad->clk); err_put_clk: clk_put(keypad->clk); samsung_keypad_dt_gpio_free(keypad); @@ -531,6 +539,7 @@ static int __devexit samsung_keypad_remove(struct platform_device *pdev) */ free_irq(keypad->irq, keypad); + clk_unprepare(keypad->clk); clk_put(keypad->clk); samsung_keypad_dt_gpio_free(keypad); -- cgit v0.10.2 From a2cb1191f4733134b21918b6098512a2e2e48e61 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 8 Oct 2012 09:07:23 -0700 Subject: Input: mousedev - factor out psaux code to reduce #ifdefery Reviewed-by: David Herrmann Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 964e43d..8d3942f 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -25,9 +25,6 @@ #include #include #include -#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX -#include -#endif MODULE_AUTHOR("Vojtech Pavlik "); MODULE_DESCRIPTION("Mouse (ExplorerPS/2) device interfaces"); @@ -1064,10 +1061,36 @@ static struct input_handler mousedev_handler = { }; #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX +#include + static struct miscdevice psaux_mouse = { - PSMOUSE_MINOR, "psaux", &mousedev_fops + .minor = PSMOUSE_MINOR, + .name = "psaux", + .fops = &mousedev_fops, }; -static int psaux_registered; + +static bool psaux_registered; + +static void __init mousedev_psaux_register(void) +{ + int error; + + error = misc_register(&psaux_mouse); + if (error) + pr_warn("could not register psaux device, error: %d\n", + error); + else + psaux_registered = true; +} + +static void __exit mousedev_psaux_unregister(void) +{ + if (psaux_registered) + misc_deregister(&psaux_mouse); +} +#else +static inline void mousedev_psaux_register(void) { } +static inline void mousedev_psaux_unregister(void) { } #endif static int __init mousedev_init(void) @@ -1084,14 +1107,7 @@ static int __init mousedev_init(void) return error; } -#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX - error = misc_register(&psaux_mouse); - if (error) - pr_warn("could not register psaux device, error: %d\n", - error); - else - psaux_registered = 1; -#endif + mousedev_psaux_register(); pr_info("PS/2 mouse device common for all mice\n"); @@ -1100,10 +1116,7 @@ static int __init mousedev_init(void) static void __exit mousedev_exit(void) { -#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX - if (psaux_registered) - misc_deregister(&psaux_mouse); -#endif + mousedev_psaux_unregister(); input_unregister_handler(&mousedev_handler); mousedev_destroy(mousedev_mix); } -- cgit v0.10.2 From 1c74585eccbef8fbdac494bfb2abb768aab886d3 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 8 Oct 2012 09:07:24 -0700 Subject: Input: mousedev - reformat structure initializers Reformat structure initializers to match the rest of input handlers Reviewed-by: David Herrmann Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 8d3942f..91f6220 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -782,14 +782,14 @@ static unsigned int mousedev_poll(struct file *file, poll_table *wait) } static const struct file_operations mousedev_fops = { - .owner = THIS_MODULE, - .read = mousedev_read, - .write = mousedev_write, - .poll = mousedev_poll, - .open = mousedev_open, - .release = mousedev_release, - .fasync = mousedev_fasync, - .llseek = noop_llseek, + .owner = THIS_MODULE, + .read = mousedev_read, + .write = mousedev_write, + .poll = mousedev_poll, + .open = mousedev_open, + .release = mousedev_release, + .fasync = mousedev_fasync, + .llseek = noop_llseek, }; static int mousedev_install_chrdev(struct mousedev *mousedev) @@ -1051,13 +1051,13 @@ static const struct input_device_id mousedev_ids[] = { MODULE_DEVICE_TABLE(input, mousedev_ids); static struct input_handler mousedev_handler = { - .event = mousedev_event, - .connect = mousedev_connect, - .disconnect = mousedev_disconnect, - .fops = &mousedev_fops, - .minor = MOUSEDEV_MINOR_BASE, - .name = "mousedev", - .id_table = mousedev_ids, + .event = mousedev_event, + .connect = mousedev_connect, + .disconnect = mousedev_disconnect, + .fops = &mousedev_fops, + .minor = MOUSEDEV_MINOR_BASE, + .name = "mousedev", + .id_table = mousedev_ids, }; #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX -- cgit v0.10.2 From 3376b8b753bcc300c4f1b170d01c2fb472889a3d Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 8 Oct 2012 09:07:24 -0700 Subject: Input: mousedev - rename mixdev_open to opened_by_mixdev Do the rename to make the logic more clear and also change it to bool while at it. Reviewed-by: David Herrmann Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 91f6220..2baf32d 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -68,7 +68,7 @@ struct mousedev { bool exist; struct list_head mixdev_node; - int mixdev_open; + bool opened_by_mixdev; struct mousedev_hw_data packet; unsigned int pkt_count; @@ -469,11 +469,11 @@ static void mixdev_open_devices(void) return; list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) { - if (!mousedev->mixdev_open) { + if (!mousedev->opened_by_mixdev) { if (mousedev_open_device(mousedev)) continue; - mousedev->mixdev_open = 1; + mousedev->opened_by_mixdev = true; } } } @@ -491,8 +491,8 @@ static void mixdev_close_devices(void) return; list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) { - if (mousedev->mixdev_open) { - mousedev->mixdev_open = 0; + if (mousedev->opened_by_mixdev) { + mousedev->opened_by_mixdev = false; mousedev_close_device(mousedev); } } @@ -935,7 +935,7 @@ static int mixdev_add_device(struct mousedev *mousedev) if (retval) goto out; - mousedev->mixdev_open = 1; + mousedev->opened_by_mixdev = true; } get_device(&mousedev->dev); @@ -950,8 +950,8 @@ static void mixdev_remove_device(struct mousedev *mousedev) { mutex_lock(&mousedev_mix->mutex); - if (mousedev->mixdev_open) { - mousedev->mixdev_open = 0; + if (mousedev->opened_by_mixdev) { + mousedev->opened_by_mixdev = false; mousedev_close_device(mousedev); } -- cgit v0.10.2 From 0124be49770469cfb258d7df4693e70b4c5fb013 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 8 Oct 2012 09:07:24 -0700 Subject: Input: mousedev - mark mousedev interfaces as non-seekable Seeking does not make sense for mousedev, so let's use nonseekable_open() to mark its devices as non-seekable. Reviewed-by: David Herrmann Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 2baf32d..88b962a 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -576,6 +576,7 @@ static int mousedev_open(struct inode *inode, struct file *file) goto err_free_client; file->private_data = client; + nonseekable_open(inode, file); return 0; err_free_client: -- cgit v0.10.2 From 7f8d4cad1e4e11a45d02bd6e024cc2812963c38a Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 8 Oct 2012 09:07:24 -0700 Subject: Input: extend the number of event (and other) devices Extend the amount of character devices, such as eventX, mouseX and jsX, from a hard limit of 32 per input handler to about 1024 shared across all handlers. To be compatible with legacy installations input handlers will start creating char devices with minors in their legacy range, however once legacy range is exhausted they will start allocating minors from the dynamic range 256-1024. Reviewed-by: David Herrmann Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 118d030..6ae2ac4 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -23,11 +23,11 @@ #include #include #include +#include #include "input-compat.h" struct evdev { int open; - int minor; struct input_handle handle; wait_queue_head_t wait; struct evdev_client __rcu *grab; @@ -35,6 +35,7 @@ struct evdev { spinlock_t client_lock; /* protects client_list */ struct mutex mutex; struct device dev; + struct cdev cdev; bool exist; }; @@ -51,9 +52,6 @@ struct evdev_client { struct input_event buffer[]; }; -static struct evdev *evdev_table[EVDEV_MINORS]; -static DEFINE_MUTEX(evdev_table_mutex); - static void __pass_event(struct evdev_client *client, const struct input_event *event) { @@ -310,35 +308,16 @@ static unsigned int evdev_compute_buffer_size(struct input_dev *dev) static int evdev_open(struct inode *inode, struct file *file) { - struct evdev *evdev; + struct evdev *evdev = container_of(inode->i_cdev, struct evdev, cdev); + unsigned int bufsize = evdev_compute_buffer_size(evdev->handle.dev); struct evdev_client *client; - int i = iminor(inode) - EVDEV_MINOR_BASE; - unsigned int bufsize; int error; - if (i >= EVDEV_MINORS) - return -ENODEV; - - error = mutex_lock_interruptible(&evdev_table_mutex); - if (error) - return error; - evdev = evdev_table[i]; - if (evdev) - get_device(&evdev->dev); - mutex_unlock(&evdev_table_mutex); - - if (!evdev) - return -ENODEV; - - bufsize = evdev_compute_buffer_size(evdev->handle.dev); - client = kzalloc(sizeof(struct evdev_client) + bufsize * sizeof(struct input_event), GFP_KERNEL); - if (!client) { - error = -ENOMEM; - goto err_put_evdev; - } + if (!client) + return -ENOMEM; client->bufsize = bufsize; spin_lock_init(&client->buffer_lock); @@ -352,13 +331,12 @@ static int evdev_open(struct inode *inode, struct file *file) file->private_data = client; nonseekable_open(inode, file); + get_device(&evdev->dev); return 0; err_free_client: evdev_detach_client(evdev, client); kfree(client); - err_put_evdev: - put_device(&evdev->dev); return error; } @@ -942,26 +920,6 @@ static const struct file_operations evdev_fops = { .llseek = no_llseek, }; -static int evdev_install_chrdev(struct evdev *evdev) -{ - /* - * No need to do any locking here as calls to connect and - * disconnect are serialized by the input core - */ - evdev_table[evdev->minor] = evdev; - return 0; -} - -static void evdev_remove_chrdev(struct evdev *evdev) -{ - /* - * Lock evdev table to prevent race with evdev_open() - */ - mutex_lock(&evdev_table_mutex); - evdev_table[evdev->minor] = NULL; - mutex_unlock(&evdev_table_mutex); -} - /* * Mark device non-existent. This disables writes, ioctls and * prevents new users from opening the device. Already posted @@ -980,7 +938,8 @@ static void evdev_cleanup(struct evdev *evdev) evdev_mark_dead(evdev); evdev_hangup(evdev); - evdev_remove_chrdev(evdev); + + cdev_del(&evdev->cdev); /* evdev is marked dead so no one else accesses evdev->open */ if (evdev->open) { @@ -991,43 +950,47 @@ static void evdev_cleanup(struct evdev *evdev) /* * Create new evdev device. Note that input core serializes calls - * to connect and disconnect so we don't need to lock evdev_table here. + * to connect and disconnect. */ static int evdev_connect(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id) { struct evdev *evdev; int minor; + int dev_no; int error; - for (minor = 0; minor < EVDEV_MINORS; minor++) - if (!evdev_table[minor]) - break; - - if (minor == EVDEV_MINORS) { - pr_err("no more free evdev devices\n"); - return -ENFILE; + minor = input_get_new_minor(EVDEV_MINOR_BASE, EVDEV_MINORS, true); + if (minor < 0) { + error = minor; + pr_err("failed to reserve new minor: %d\n", error); + return error; } evdev = kzalloc(sizeof(struct evdev), GFP_KERNEL); - if (!evdev) - return -ENOMEM; + if (!evdev) { + error = -ENOMEM; + goto err_free_minor; + } INIT_LIST_HEAD(&evdev->client_list); spin_lock_init(&evdev->client_lock); mutex_init(&evdev->mutex); init_waitqueue_head(&evdev->wait); - - dev_set_name(&evdev->dev, "event%d", minor); evdev->exist = true; - evdev->minor = minor; + + dev_no = minor; + /* Normalize device number if it falls into legacy range */ + if (dev_no < EVDEV_MINOR_BASE + EVDEV_MINORS) + dev_no -= EVDEV_MINOR_BASE; + dev_set_name(&evdev->dev, "event%d", dev_no); evdev->handle.dev = input_get_device(dev); evdev->handle.name = dev_name(&evdev->dev); evdev->handle.handler = handler; evdev->handle.private = evdev; - evdev->dev.devt = MKDEV(INPUT_MAJOR, EVDEV_MINOR_BASE + minor); + evdev->dev.devt = MKDEV(INPUT_MAJOR, minor); evdev->dev.class = &input_class; evdev->dev.parent = &dev->dev; evdev->dev.release = evdev_free; @@ -1037,7 +1000,8 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev, if (error) goto err_free_evdev; - error = evdev_install_chrdev(evdev); + cdev_init(&evdev->cdev, &evdev_fops); + error = cdev_add(&evdev->cdev, evdev->dev.devt, 1); if (error) goto err_unregister_handle; @@ -1053,6 +1017,8 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev, input_unregister_handle(&evdev->handle); err_free_evdev: put_device(&evdev->dev); + err_free_minor: + input_free_minor(minor); return error; } @@ -1062,6 +1028,7 @@ static void evdev_disconnect(struct input_handle *handle) device_del(&evdev->dev); evdev_cleanup(evdev); + input_free_minor(MINOR(evdev->dev.devt)); input_unregister_handle(handle); put_device(&evdev->dev); } @@ -1078,7 +1045,7 @@ static struct input_handler evdev_handler = { .events = evdev_events, .connect = evdev_connect, .disconnect = evdev_disconnect, - .fops = &evdev_fops, + .legacy_minors = true, .minor = EVDEV_MINOR_BASE, .name = "evdev", .id_table = evdev_ids, diff --git a/drivers/input/input.c b/drivers/input/input.c index ace3f7c..53a0dde 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -14,6 +14,7 @@ #include #include +#include #include #include #include @@ -32,7 +33,9 @@ MODULE_AUTHOR("Vojtech Pavlik "); MODULE_DESCRIPTION("Input core"); MODULE_LICENSE("GPL"); -#define INPUT_DEVICES 256 +#define INPUT_MAX_CHAR_DEVICES 1024 +#define INPUT_FIRST_DYNAMIC_DEV 256 +static DEFINE_IDA(input_ida); static LIST_HEAD(input_dev_list); static LIST_HEAD(input_handler_list); @@ -45,8 +48,6 @@ static LIST_HEAD(input_handler_list); */ static DEFINE_MUTEX(input_mutex); -static struct input_handler *input_table[8]; - static const struct input_value input_value_sync = { EV_SYN, SYN_REPORT, 1 }; static inline int is_event_supported(unsigned int code, @@ -1218,7 +1219,7 @@ static int input_handlers_seq_show(struct seq_file *seq, void *v) seq_printf(seq, "N: Number=%u Name=%s", state->pos, handler->name); if (handler->filter) seq_puts(seq, " (filter)"); - if (handler->fops) + if (handler->legacy_minors) seq_printf(seq, " Minor=%d", handler->minor); seq_putc(seq, '\n'); @@ -2016,22 +2017,14 @@ EXPORT_SYMBOL(input_unregister_device); int input_register_handler(struct input_handler *handler) { struct input_dev *dev; - int retval; + int error; - retval = mutex_lock_interruptible(&input_mutex); - if (retval) - return retval; + error = mutex_lock_interruptible(&input_mutex); + if (error) + return error; INIT_LIST_HEAD(&handler->h_list); - if (handler->fops != NULL) { - if (input_table[handler->minor >> 5]) { - retval = -EBUSY; - goto out; - } - input_table[handler->minor >> 5] = handler; - } - list_add_tail(&handler->node, &input_handler_list); list_for_each_entry(dev, &input_dev_list, node) @@ -2039,9 +2032,8 @@ int input_register_handler(struct input_handler *handler) input_wakeup_procfs_readers(); - out: mutex_unlock(&input_mutex); - return retval; + return 0; } EXPORT_SYMBOL(input_register_handler); @@ -2064,9 +2056,6 @@ void input_unregister_handler(struct input_handler *handler) list_del_init(&handler->node); - if (handler->fops != NULL) - input_table[handler->minor >> 5] = NULL; - input_wakeup_procfs_readers(); mutex_unlock(&input_mutex); @@ -2183,51 +2172,52 @@ void input_unregister_handle(struct input_handle *handle) } EXPORT_SYMBOL(input_unregister_handle); -static int input_open_file(struct inode *inode, struct file *file) +/** + * input_get_new_minor - allocates a new input minor number + * @legacy_base: beginning or the legacy range to be searched + * @legacy_num: size of legacy range + * @allow_dynamic: whether we can also take ID from the dynamic range + * + * This function allocates a new device minor for from input major namespace. + * Caller can request legacy minor by specifying @legacy_base and @legacy_num + * parameters and whether ID can be allocated from dynamic range if there are + * no free IDs in legacy range. + */ +int input_get_new_minor(int legacy_base, unsigned int legacy_num, + bool allow_dynamic) { - struct input_handler *handler; - const struct file_operations *old_fops, *new_fops = NULL; - int err; - - err = mutex_lock_interruptible(&input_mutex); - if (err) - return err; - - /* No load-on-demand here? */ - handler = input_table[iminor(inode) >> 5]; - if (handler) - new_fops = fops_get(handler->fops); - - mutex_unlock(&input_mutex); - /* - * That's _really_ odd. Usually NULL ->open means "nothing special", - * not "no device". Oh, well... + * This function should be called from input handler's ->connect() + * methods, which are serialized with input_mutex, so no additional + * locking is needed here. */ - if (!new_fops || !new_fops->open) { - fops_put(new_fops); - err = -ENODEV; - goto out; + if (legacy_base >= 0) { + int minor = ida_simple_get(&input_ida, + legacy_base, + legacy_base + legacy_num, + GFP_KERNEL); + if (minor >= 0 || !allow_dynamic) + return minor; } - old_fops = file->f_op; - file->f_op = new_fops; - - err = new_fops->open(inode, file); - if (err) { - fops_put(file->f_op); - file->f_op = fops_get(old_fops); - } - fops_put(old_fops); -out: - return err; + return ida_simple_get(&input_ida, + INPUT_FIRST_DYNAMIC_DEV, INPUT_MAX_CHAR_DEVICES, + GFP_KERNEL); } +EXPORT_SYMBOL(input_get_new_minor); -static const struct file_operations input_fops = { - .owner = THIS_MODULE, - .open = input_open_file, - .llseek = noop_llseek, -}; +/** + * input_free_minor - release previously allocated minor + * @minor: minor to be released + * + * This function releases previously allocated input minor so that it can be + * reused later. + */ +void input_free_minor(unsigned int minor) +{ + ida_simple_remove(&input_ida, minor); +} +EXPORT_SYMBOL(input_free_minor); static int __init input_init(void) { @@ -2243,7 +2233,8 @@ static int __init input_init(void) if (err) goto fail1; - err = register_chrdev(INPUT_MAJOR, "input", &input_fops); + err = register_chrdev_region(MKDEV(INPUT_MAJOR, 0), + INPUT_MAX_CHAR_DEVICES, "input"); if (err) { pr_err("unable to register char major %d", INPUT_MAJOR); goto fail2; @@ -2259,7 +2250,8 @@ static int __init input_init(void) static void __exit input_exit(void) { input_proc_exit(); - unregister_chrdev(INPUT_MAJOR, "input"); + unregister_chrdev_region(MKDEV(INPUT_MAJOR, 0), + INPUT_MAX_CHAR_DEVICES); class_unregister(&input_class); } diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c index 78f323e..b62b589 100644 --- a/drivers/input/joydev.c +++ b/drivers/input/joydev.c @@ -27,6 +27,7 @@ #include #include #include +#include MODULE_AUTHOR("Vojtech Pavlik "); MODULE_DESCRIPTION("Joystick device interfaces"); @@ -39,13 +40,13 @@ MODULE_LICENSE("GPL"); struct joydev { int open; - int minor; struct input_handle handle; wait_queue_head_t wait; struct list_head client_list; spinlock_t client_lock; /* protects client_list */ struct mutex mutex; struct device dev; + struct cdev cdev; bool exist; struct js_corr corr[ABS_CNT]; @@ -70,9 +71,6 @@ struct joydev_client { struct list_head node; }; -static struct joydev *joydev_table[JOYDEV_MINORS]; -static DEFINE_MUTEX(joydev_table_mutex); - static int joydev_correct(int value, struct js_corr *corr) { switch (corr->type) { @@ -252,30 +250,14 @@ static int joydev_release(struct inode *inode, struct file *file) static int joydev_open(struct inode *inode, struct file *file) { + struct joydev *joydev = + container_of(inode->i_cdev, struct joydev, cdev); struct joydev_client *client; - struct joydev *joydev; - int i = iminor(inode) - JOYDEV_MINOR_BASE; int error; - if (i >= JOYDEV_MINORS) - return -ENODEV; - - error = mutex_lock_interruptible(&joydev_table_mutex); - if (error) - return error; - joydev = joydev_table[i]; - if (joydev) - get_device(&joydev->dev); - mutex_unlock(&joydev_table_mutex); - - if (!joydev) - return -ENODEV; - client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL); - if (!client) { - error = -ENOMEM; - goto err_put_joydev; - } + if (!client) + return -ENOMEM; spin_lock_init(&client->buffer_lock); client->joydev = joydev; @@ -288,13 +270,12 @@ static int joydev_open(struct inode *inode, struct file *file) file->private_data = client; nonseekable_open(inode, file); + get_device(&joydev->dev); return 0; err_free_client: joydev_detach_client(joydev, client); kfree(client); - err_put_joydev: - put_device(&joydev->dev); return error; } @@ -742,19 +723,6 @@ static const struct file_operations joydev_fops = { .llseek = no_llseek, }; -static int joydev_install_chrdev(struct joydev *joydev) -{ - joydev_table[joydev->minor] = joydev; - return 0; -} - -static void joydev_remove_chrdev(struct joydev *joydev) -{ - mutex_lock(&joydev_table_mutex); - joydev_table[joydev->minor] = NULL; - mutex_unlock(&joydev_table_mutex); -} - /* * Mark device non-existent. This disables writes, ioctls and * prevents new users from opening the device. Already posted @@ -773,7 +741,8 @@ static void joydev_cleanup(struct joydev *joydev) joydev_mark_dead(joydev); joydev_hangup(joydev); - joydev_remove_chrdev(joydev); + + cdev_del(&joydev->cdev); /* joydev is marked dead so no one else accesses joydev->open */ if (joydev->open) @@ -798,30 +767,33 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id) { struct joydev *joydev; - int i, j, t, minor; + int i, j, t, minor, dev_no; int error; - for (minor = 0; minor < JOYDEV_MINORS; minor++) - if (!joydev_table[minor]) - break; - - if (minor == JOYDEV_MINORS) { - pr_err("no more free joydev devices\n"); - return -ENFILE; + minor = input_get_new_minor(JOYDEV_MINOR_BASE, JOYDEV_MINORS, true); + if (minor < 0) { + error = minor; + pr_err("failed to reserve new minor: %d\n", error); + return error; } joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL); - if (!joydev) - return -ENOMEM; + if (!joydev) { + error = -ENOMEM; + goto err_free_minor; + } INIT_LIST_HEAD(&joydev->client_list); spin_lock_init(&joydev->client_lock); mutex_init(&joydev->mutex); init_waitqueue_head(&joydev->wait); - - dev_set_name(&joydev->dev, "js%d", minor); joydev->exist = true; - joydev->minor = minor; + + dev_no = minor; + /* Normalize device number if it falls into legacy range */ + if (dev_no < JOYDEV_MINOR_BASE + JOYDEV_MINORS) + dev_no -= JOYDEV_MINOR_BASE; + dev_set_name(&joydev->dev, "js%d", dev_no); joydev->handle.dev = input_get_device(dev); joydev->handle.name = dev_name(&joydev->dev); @@ -875,7 +847,7 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev, } } - joydev->dev.devt = MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor); + joydev->dev.devt = MKDEV(INPUT_MAJOR, minor); joydev->dev.class = &input_class; joydev->dev.parent = &dev->dev; joydev->dev.release = joydev_free; @@ -885,7 +857,8 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev, if (error) goto err_free_joydev; - error = joydev_install_chrdev(joydev); + cdev_init(&joydev->cdev, &joydev_fops); + error = cdev_add(&joydev->cdev, joydev->dev.devt, 1); if (error) goto err_unregister_handle; @@ -901,6 +874,8 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev, input_unregister_handle(&joydev->handle); err_free_joydev: put_device(&joydev->dev); + err_free_minor: + input_free_minor(minor); return error; } @@ -910,6 +885,7 @@ static void joydev_disconnect(struct input_handle *handle) device_del(&joydev->dev); joydev_cleanup(joydev); + input_free_minor(MINOR(joydev->dev.devt)); input_unregister_handle(handle); put_device(&joydev->dev); } @@ -961,7 +937,7 @@ static struct input_handler joydev_handler = { .match = joydev_match, .connect = joydev_connect, .disconnect = joydev_disconnect, - .fops = &joydev_fops, + .legacy_minors = true, .minor = JOYDEV_MINOR_BASE, .name = "joydev", .id_table = joydev_ids, diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c index 88b962a..a1b4c37 100644 --- a/drivers/input/mousedev.c +++ b/drivers/input/mousedev.c @@ -24,6 +24,7 @@ #include #include #include +#include #include MODULE_AUTHOR("Vojtech Pavlik "); @@ -58,14 +59,15 @@ struct mousedev_hw_data { struct mousedev { int open; - int minor; struct input_handle handle; wait_queue_head_t wait; struct list_head client_list; spinlock_t client_lock; /* protects client_list */ struct mutex mutex; struct device dev; + struct cdev cdev; bool exist; + bool is_mixdev; struct list_head mixdev_node; bool opened_by_mixdev; @@ -111,10 +113,6 @@ struct mousedev_client { static unsigned char mousedev_imps_seq[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 }; static unsigned char mousedev_imex_seq[] = { 0xf3, 200, 0xf3, 200, 0xf3, 80 }; -static struct input_handler mousedev_handler; - -static struct mousedev *mousedev_table[MOUSEDEV_MINORS]; -static DEFINE_MUTEX(mousedev_table_mutex); static struct mousedev *mousedev_mix; static LIST_HEAD(mousedev_mix_list); @@ -430,7 +428,7 @@ static int mousedev_open_device(struct mousedev *mousedev) if (retval) return retval; - if (mousedev->minor == MOUSEDEV_MIX) + if (mousedev->is_mixdev) mixdev_open_devices(); else if (!mousedev->exist) retval = -ENODEV; @@ -448,7 +446,7 @@ static void mousedev_close_device(struct mousedev *mousedev) { mutex_lock(&mousedev->mutex); - if (mousedev->minor == MOUSEDEV_MIX) + if (mousedev->is_mixdev) mixdev_close_devices(); else if (mousedev->exist && !--mousedev->open) input_close_device(&mousedev->handle); @@ -535,35 +533,17 @@ static int mousedev_open(struct inode *inode, struct file *file) struct mousedev_client *client; struct mousedev *mousedev; int error; - int i; #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX if (imajor(inode) == MISC_MAJOR) - i = MOUSEDEV_MIX; + mousedev = mousedev_mix; else #endif - i = iminor(inode) - MOUSEDEV_MINOR_BASE; - - if (i >= MOUSEDEV_MINORS) - return -ENODEV; - - error = mutex_lock_interruptible(&mousedev_table_mutex); - if (error) - return error; - - mousedev = mousedev_table[i]; - if (mousedev) - get_device(&mousedev->dev); - mutex_unlock(&mousedev_table_mutex); - - if (!mousedev) - return -ENODEV; + mousedev = container_of(inode->i_cdev, struct mousedev, cdev); client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL); - if (!client) { - error = -ENOMEM; - goto err_put_mousedev; - } + if (!client) + return -ENOMEM; spin_lock_init(&client->packet_lock); client->pos_x = xres / 2; @@ -577,13 +557,13 @@ static int mousedev_open(struct inode *inode, struct file *file) file->private_data = client; nonseekable_open(inode, file); + + get_device(&mousedev->dev); return 0; err_free_client: mousedev_detach_client(mousedev, client); kfree(client); - err_put_mousedev: - put_device(&mousedev->dev); return error; } @@ -793,19 +773,6 @@ static const struct file_operations mousedev_fops = { .llseek = noop_llseek, }; -static int mousedev_install_chrdev(struct mousedev *mousedev) -{ - mousedev_table[mousedev->minor] = mousedev; - return 0; -} - -static void mousedev_remove_chrdev(struct mousedev *mousedev) -{ - mutex_lock(&mousedev_table_mutex); - mousedev_table[mousedev->minor] = NULL; - mutex_unlock(&mousedev_table_mutex); -} - /* * Mark device non-existent. This disables writes, ioctls and * prevents new users from opening the device. Already posted @@ -840,24 +807,50 @@ static void mousedev_cleanup(struct mousedev *mousedev) mousedev_mark_dead(mousedev); mousedev_hangup(mousedev); - mousedev_remove_chrdev(mousedev); + + cdev_del(&mousedev->cdev); /* mousedev is marked dead so no one else accesses mousedev->open */ if (mousedev->open) input_close_device(handle); } +static int mousedev_reserve_minor(bool mixdev) +{ + int minor; + + if (mixdev) { + minor = input_get_new_minor(MOUSEDEV_MIX, 1, false); + if (minor < 0) + pr_err("failed to reserve mixdev minor: %d\n", minor); + } else { + minor = input_get_new_minor(MOUSEDEV_MINOR_BASE, + MOUSEDEV_MINORS, true); + if (minor < 0) + pr_err("failed to reserve new minor: %d\n", minor); + } + + return minor; +} + static struct mousedev *mousedev_create(struct input_dev *dev, struct input_handler *handler, - int minor) + bool mixdev) { struct mousedev *mousedev; + int minor; int error; + minor = mousedev_reserve_minor(mixdev); + if (minor < 0) { + error = minor; + goto err_out; + } + mousedev = kzalloc(sizeof(struct mousedev), GFP_KERNEL); if (!mousedev) { error = -ENOMEM; - goto err_out; + goto err_free_minor; } INIT_LIST_HEAD(&mousedev->client_list); @@ -865,16 +858,21 @@ static struct mousedev *mousedev_create(struct input_dev *dev, spin_lock_init(&mousedev->client_lock); mutex_init(&mousedev->mutex); lockdep_set_subclass(&mousedev->mutex, - minor == MOUSEDEV_MIX ? SINGLE_DEPTH_NESTING : 0); + mixdev ? SINGLE_DEPTH_NESTING : 0); init_waitqueue_head(&mousedev->wait); - if (minor == MOUSEDEV_MIX) + if (mixdev) { dev_set_name(&mousedev->dev, "mice"); - else - dev_set_name(&mousedev->dev, "mouse%d", minor); + } else { + int dev_no = minor; + /* Normalize device number if it falls into legacy range */ + if (dev_no < MOUSEDEV_MINOR_BASE + MOUSEDEV_MINORS) + dev_no -= MOUSEDEV_MINOR_BASE; + dev_set_name(&mousedev->dev, "mouse%d", dev_no); + } - mousedev->minor = minor; mousedev->exist = true; + mousedev->is_mixdev = mixdev; mousedev->handle.dev = input_get_device(dev); mousedev->handle.name = dev_name(&mousedev->dev); mousedev->handle.handler = handler; @@ -883,17 +881,18 @@ static struct mousedev *mousedev_create(struct input_dev *dev, mousedev->dev.class = &input_class; if (dev) mousedev->dev.parent = &dev->dev; - mousedev->dev.devt = MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor); + mousedev->dev.devt = MKDEV(INPUT_MAJOR, minor); mousedev->dev.release = mousedev_free; device_initialize(&mousedev->dev); - if (minor != MOUSEDEV_MIX) { + if (!mixdev) { error = input_register_handle(&mousedev->handle); if (error) goto err_free_mousedev; } - error = mousedev_install_chrdev(mousedev); + cdev_init(&mousedev->cdev, &mousedev_fops); + error = cdev_add(&mousedev->cdev, mousedev->dev.devt, 1); if (error) goto err_unregister_handle; @@ -906,10 +905,12 @@ static struct mousedev *mousedev_create(struct input_dev *dev, err_cleanup_mousedev: mousedev_cleanup(mousedev); err_unregister_handle: - if (minor != MOUSEDEV_MIX) + if (!mixdev) input_unregister_handle(&mousedev->handle); err_free_mousedev: put_device(&mousedev->dev); + err_free_minor: + input_free_minor(minor); err_out: return ERR_PTR(error); } @@ -918,7 +919,8 @@ static void mousedev_destroy(struct mousedev *mousedev) { device_del(&mousedev->dev); mousedev_cleanup(mousedev); - if (mousedev->minor != MOUSEDEV_MIX) + input_free_minor(MINOR(mousedev->dev.devt)); + if (!mousedev->is_mixdev) input_unregister_handle(&mousedev->handle); put_device(&mousedev->dev); } @@ -967,19 +969,9 @@ static int mousedev_connect(struct input_handler *handler, const struct input_device_id *id) { struct mousedev *mousedev; - int minor; int error; - for (minor = 0; minor < MOUSEDEV_MINORS; minor++) - if (!mousedev_table[minor]) - break; - - if (minor == MOUSEDEV_MINORS) { - pr_err("no more free mousedev devices\n"); - return -ENFILE; - } - - mousedev = mousedev_create(dev, handler, minor); + mousedev = mousedev_create(dev, handler, false); if (IS_ERR(mousedev)) return PTR_ERR(mousedev); @@ -1055,7 +1047,7 @@ static struct input_handler mousedev_handler = { .event = mousedev_event, .connect = mousedev_connect, .disconnect = mousedev_disconnect, - .fops = &mousedev_fops, + .legacy_minors = true, .minor = MOUSEDEV_MINOR_BASE, .name = "mousedev", .id_table = mousedev_ids, @@ -1098,7 +1090,7 @@ static int __init mousedev_init(void) { int error; - mousedev_mix = mousedev_create(NULL, &mousedev_handler, MOUSEDEV_MIX); + mousedev_mix = mousedev_create(NULL, &mousedev_handler, true); if (IS_ERR(mousedev_mix)) return PTR_ERR(mousedev_mix); diff --git a/include/linux/input.h b/include/linux/input.h index ba48743..15464ba 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -1396,8 +1396,8 @@ struct input_handle; * @start: starts handler for given handle. This function is called by * input core right after connect() method and also when a process * that "grabbed" a device releases it - * @fops: file operations this driver implements - * @minor: beginning of range of 32 minors for devices this driver + * @legacy_minors: set to %true by drivers using legacy minor ranges + * @minor: beginning of range of 32 legacy minors for devices this driver * can provide * @name: name of the handler, to be shown in /proc/bus/input/handlers * @id_table: pointer to a table of input_device_ids this driver can @@ -1431,7 +1431,7 @@ struct input_handler { void (*disconnect)(struct input_handle *handle); void (*start)(struct input_handle *handle); - const struct file_operations *fops; + bool legacy_minors; int minor; const char *name; @@ -1499,6 +1499,10 @@ void input_reset_device(struct input_dev *); int __must_check input_register_handler(struct input_handler *); void input_unregister_handler(struct input_handler *); +int __must_check input_get_new_minor(int legacy_base, unsigned int legacy_num, + bool allow_dynamic); +void input_free_minor(unsigned int minor); + int input_handler_for_each_handle(struct input_handler *, void *data, int (*fn)(struct input_handle *, void *)); -- cgit v0.10.2