diff options
Diffstat (limited to 'include/linux/input.h')
| -rw-r--r-- | include/linux/input.h | 107 |
1 files changed, 85 insertions, 22 deletions
diff --git a/include/linux/input.h b/include/linux/input.h index 6fcc9101beeb..896a92227bc4 100644 --- a/include/linux/input.h +++ b/include/linux/input.h @@ -691,9 +691,12 @@ struct input_absinfo { #define ABS_TILT_X 0x1a #define ABS_TILT_Y 0x1b #define ABS_TOOL_WIDTH 0x1c + #define ABS_VOLUME 0x20 + #define ABS_MISC 0x28 +#define ABS_MT_SLOT 0x2f /* MT slot being modified */ #define ABS_MT_TOUCH_MAJOR 0x30 /* Major axis of touching ellipse */ #define ABS_MT_TOUCH_MINOR 0x31 /* Minor axis (omit if circular) */ #define ABS_MT_WIDTH_MAJOR 0x32 /* Major axis of approaching ellipse */ @@ -706,6 +709,12 @@ struct input_absinfo { #define ABS_MT_TRACKING_ID 0x39 /* Unique ID of initiated contact */ #define ABS_MT_PRESSURE 0x3a /* Pressure on contact area */ +#ifdef __KERNEL__ +/* Implementation details, userspace should not care about these */ +#define ABS_MT_FIRST ABS_MT_TOUCH_MAJOR +#define ABS_MT_LAST ABS_MT_PRESSURE +#endif + #define ABS_MAX 0x3f #define ABS_CNT (ABS_MAX+1) @@ -767,6 +776,7 @@ struct input_absinfo { #define REP_DELAY 0x00 #define REP_PERIOD 0x01 #define REP_MAX 0x01 +#define REP_CNT (REP_MAX+1) /* * Sounds @@ -1048,6 +1058,14 @@ struct ff_effect { #include <linux/mod_devicetable.h> /** + * struct input_mt_slot - represents the state of an input MT slot + * @abs: holds current values of ABS_MT axes for this slot + */ +struct input_mt_slot { + int abs[ABS_MT_LAST - ABS_MT_FIRST + 1]; +}; + +/** * struct input_dev - represents an input device * @name: name of the device * @phys: physical path to the device in the system hierarchy @@ -1063,6 +1081,10 @@ struct ff_effect { * @sndbit: bitmap of sound effects supported by the device * @ffbit: bitmap of force feedback effects supported by the device * @swbit: bitmap of switches present on the device + * @hint_events_per_packet: average number of events generated by the + * device in a packet (between EV_SYN/SYN_REPORT events). Used by + * event handlers to estimate size of the buffer needed to hold + * events. * @keycodemax: size of keycode table * @keycodesize: size of elements in keycode table * @keycode: map of scancodes to keycodes for this device @@ -1078,18 +1100,18 @@ struct ff_effect { * @repeat_key: stores key code of the last key pressed; used to implement * software autorepeat * @timer: timer for software autorepeat - * @sync: set to 1 when there were no new events since last EV_SYNC - * @abs: current values for reports from absolute axes * @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 + * @absinfo: array of &struct absinfo elements holding information + * about absolute axes (current value, min, max, flat, fuzz, + * resolution) * @key: reflects current state of device's keys/buttons * @led: reflects current state of device's LEDs * @snd: reflects current state of sound effects * @sw: reflects current state of device's switches - * @absmax: maximum values for events coming from absolute axes - * @absmin: minimum values for events coming from absolute axes - * @absfuzz: describes noisiness for axes - * @absflat: size of the center flat position (used by joydev) - * @absres: resolution used for events coming form absolute axes * @open: this method is called when the very first user calls * input_open_device(). The driver must prepare the device * to start generating events (start polling thread, @@ -1119,6 +1141,7 @@ 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 @@ -1140,6 +1163,8 @@ struct input_dev { unsigned long ffbit[BITS_TO_LONGS(FF_CNT)]; unsigned long swbit[BITS_TO_LONGS(SW_CNT)]; + unsigned int hint_events_per_packet; + unsigned int keycodemax; unsigned int keycodesize; void *keycode; @@ -1153,22 +1178,19 @@ struct input_dev { unsigned int repeat_key; struct timer_list timer; - int sync; + int rep[REP_CNT]; + + struct input_mt_slot *mt; + int mtsize; + int slot; - int abs[ABS_CNT]; - int rep[REP_MAX + 1]; + struct input_absinfo *absinfo; unsigned long key[BITS_TO_LONGS(KEY_CNT)]; unsigned long led[BITS_TO_LONGS(LED_CNT)]; unsigned long snd[BITS_TO_LONGS(SND_CNT)]; unsigned long sw[BITS_TO_LONGS(SW_CNT)]; - int absmax[ABS_CNT]; - int absmin[ABS_CNT]; - int absfuzz[ABS_CNT]; - int absflat[ABS_CNT]; - int absres[ABS_CNT]; - int (*open)(struct input_dev *dev); void (*close)(struct input_dev *dev); int (*flush)(struct input_dev *dev, struct file *file); @@ -1182,6 +1204,8 @@ struct input_dev { unsigned int users; bool going_away; + bool sync; + struct device dev; struct list_head h_list; @@ -1406,18 +1430,54 @@ static inline void input_mt_sync(struct input_dev *dev) input_event(dev, EV_SYN, SYN_MT_REPORT, 0); } +static inline void input_mt_slot(struct input_dev *dev, int slot) +{ + input_event(dev, EV_ABS, ABS_MT_SLOT, slot); +} + void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code); -static inline void input_set_abs_params(struct input_dev *dev, int axis, int min, int max, int fuzz, int flat) +/** + * input_set_events_per_packet - tell handlers about the driver event rate + * @dev: the input device used by the driver + * @n_events: the average number of events between calls to input_sync() + * + * If the event rate sent from a device is unusually large, use this + * function to set the expected event rate. This will allow handlers + * to set up an appropriate buffer size for the event stream, in order + * to minimize information loss. + */ +static inline void input_set_events_per_packet(struct input_dev *dev, int n_events) { - dev->absmin[axis] = min; - dev->absmax[axis] = max; - dev->absfuzz[axis] = fuzz; - dev->absflat[axis] = flat; + dev->hint_events_per_packet = n_events; +} - dev->absbit[BIT_WORD(axis)] |= BIT_MASK(axis); +void input_alloc_absinfo(struct input_dev *dev); +void input_set_abs_params(struct input_dev *dev, unsigned int axis, + int min, int max, int fuzz, int flat); + +#define INPUT_GENERATE_ABS_ACCESSORS(_suffix, _item) \ +static inline int input_abs_get_##_suffix(struct input_dev *dev, \ + unsigned int axis) \ +{ \ + return dev->absinfo ? dev->absinfo[axis]._item : 0; \ +} \ + \ +static inline void input_abs_set_##_suffix(struct input_dev *dev, \ + unsigned int axis, int val) \ +{ \ + input_alloc_absinfo(dev); \ + if (dev->absinfo) \ + dev->absinfo[axis]._item = val; \ } +INPUT_GENERATE_ABS_ACCESSORS(val, value) +INPUT_GENERATE_ABS_ACCESSORS(min, minimum) +INPUT_GENERATE_ABS_ACCESSORS(max, maximum) +INPUT_GENERATE_ABS_ACCESSORS(fuzz, fuzz) +INPUT_GENERATE_ABS_ACCESSORS(flat, flat) +INPUT_GENERATE_ABS_ACCESSORS(res, resolution) + int input_get_keycode(struct input_dev *dev, unsigned int scancode, unsigned int *keycode); int input_set_keycode(struct input_dev *dev, @@ -1485,5 +1545,8 @@ int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file); int input_ff_create_memless(struct input_dev *dev, void *data, int (*play_effect)(struct input_dev *, void *, struct ff_effect *)); +int input_mt_create_slots(struct input_dev *dev, unsigned int num_slots); +void input_mt_destroy_slots(struct input_dev *dev); + #endif #endif |