diff options
Diffstat (limited to 'drivers/hid/hid-input.c')
| -rw-r--r-- | drivers/hid/hid-input.c | 366 |
1 files changed, 313 insertions, 53 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 9333d692a78..2619f7f4517 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -208,7 +208,7 @@ static int hidinput_setkeycode(struct input_dev *dev, * Only exponent 1 length units are processed. Centimeters and inches are * converted to millimeters. Degrees are converted to radians. */ -static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) +__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) { __s32 unit_exponent = field->unit_exponent; __s32 logical_extents = field->logical_maximum - @@ -225,7 +225,16 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) * Verify and convert units. * See HID specification v1.11 6.2.2.7 Global Items for unit decoding */ - if (code == ABS_X || code == ABS_Y || code == ABS_Z) { + switch (code) { + case ABS_X: + case ABS_Y: + case ABS_Z: + case ABS_MT_POSITION_X: + case ABS_MT_POSITION_Y: + case ABS_MT_TOOL_X: + case ABS_MT_TOOL_Y: + case ABS_MT_TOUCH_MAJOR: + case ABS_MT_TOUCH_MINOR: if (field->unit == 0x11) { /* If centimeters */ /* Convert to millimeters */ unit_exponent += 1; @@ -239,7 +248,13 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) } else { return 0; } - } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) { + break; + + case ABS_RX: + case ABS_RY: + case ABS_RZ: + case ABS_TILT_X: + case ABS_TILT_Y: if (field->unit == 0x14) { /* If degrees */ /* Convert to radians */ prev = logical_extents; @@ -250,7 +265,9 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) } else if (field->unit != 0x12) { /* If not radians */ return 0; } - } else { + break; + + default: return 0; } @@ -270,8 +287,9 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) } /* Calculate resolution */ - return logical_extents / physical_extents; + return DIV_ROUND_CLOSEST(logical_extents, physical_extents); } +EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); #ifdef CONFIG_HID_BATTERY_STRENGTH static enum power_supply_property hidinput_battery_props[] = { @@ -279,7 +297,8 @@ static enum power_supply_property hidinput_battery_props[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_CAPACITY, POWER_SUPPLY_PROP_MODEL_NAME, - POWER_SUPPLY_PROP_STATUS + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_SCOPE, }; #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */ @@ -287,8 +306,14 @@ static enum power_supply_property hidinput_battery_props[] = { static const struct hid_device_id hid_battery_quirks[] = { { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, + USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), + HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI), HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, + USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), + HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, {} }; @@ -310,7 +335,7 @@ static int hidinput_get_battery_property(struct power_supply *psy, { struct hid_device *dev = container_of(psy, struct hid_device, battery); int ret = 0; - __u8 buf[2] = {}; + __u8 *buf; switch (prop) { case POWER_SUPPLY_PROP_PRESENT: @@ -319,21 +344,29 @@ static int hidinput_get_battery_property(struct power_supply *psy, break; case POWER_SUPPLY_PROP_CAPACITY: - ret = dev->hid_get_raw_report(dev, dev->battery_report_id, - buf, sizeof(buf), - dev->battery_report_type); + + buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + break; + } + ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, + dev->battery_report_type, + HID_REQ_GET_REPORT); if (ret != 2) { - if (ret >= 0) - ret = -EINVAL; + ret = -ENODATA; + kfree(buf); break; } + ret = 0; if (dev->battery_min < dev->battery_max && buf[1] >= dev->battery_min && buf[1] <= dev->battery_max) val->intval = (100 * (buf[1] - dev->battery_min)) / (dev->battery_max - dev->battery_min); + kfree(buf); break; case POWER_SUPPLY_PROP_MODEL_NAME: @@ -344,6 +377,10 @@ static int hidinput_get_battery_property(struct power_supply *psy, val->intval = POWER_SUPPLY_STATUS_DISCHARGING; break; + case POWER_SUPPLY_PROP_SCOPE: + val->intval = POWER_SUPPLY_SCOPE_DEVICE; + break; + default: ret = -EINVAL; break; @@ -403,6 +440,8 @@ static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, battery->name = NULL; } + power_supply_powers(battery, &dev->dev); + out: return true; } @@ -441,6 +480,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel if (field->flags & HID_MAIN_ITEM_CONSTANT) goto ignore; + /* Ignore if report count is out of bounds. */ + if (field->report_count < 1) + goto ignore; + /* only LED usages are supported in output fields */ if (field->report_type == HID_OUTPUT_REPORT && (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { @@ -481,9 +524,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel if (code <= 0xf) code += BTN_JOYSTICK; else - code += BTN_TRIGGER_HAPPY; + code += BTN_TRIGGER_HAPPY - 0x10; + break; + case HID_GD_GAMEPAD: + if (code <= 0xf) + code += BTN_GAMEPAD; + else + code += BTN_TRIGGER_HAPPY - 0x10; break; - case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; default: switch (field->physical) { case HID_GD_MOUSE: @@ -616,6 +664,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel map_key_clear(BTN_TOOL_RUBBER); break; + case 0x3d: /* X Tilt */ + map_abs_clear(ABS_TILT_X); + break; + + case 0x3e: /* Y Tilt */ + map_abs_clear(ABS_TILT_Y); + break; + case 0x33: /* Touch */ case 0x42: /* TipSwitch */ case 0x43: /* TipSwitch2 */ @@ -628,12 +684,13 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel break; case 0x46: /* TabletPick */ + case 0x5a: /* SecondaryBarrelSwitch */ map_key_clear(BTN_STYLUS2); break; - case 0x51: /* ContactID */ - device->quirks |= HID_QUIRK_MULTITOUCH; - goto unknown; + case 0x5b: /* TransducerSerialNumber */ + set_bit(MSC_SERIAL, input->mscbit); + break; default: goto unknown; } @@ -669,6 +726,13 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel case 0x06c: map_key_clear(KEY_YELLOW); break; case 0x06d: map_key_clear(KEY_ZOOM); break; + case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; + case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; + case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; + case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; + case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; + case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; + case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; case 0x083: map_key_clear(KEY_LAST); break; case 0x084: map_key_clear(KEY_ENTER); break; @@ -709,6 +773,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel case 0x0bf: map_key_clear(KEY_SLOW); break; case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; + case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; case 0x0e0: map_abs_clear(ABS_VOLUME); break; case 0x0e2: map_key_clear(KEY_MUTE); break; case 0x0e5: map_key_clear(KEY_BASSBOOST); break; @@ -716,6 +781,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; case 0x0f5: map_key_clear(KEY_SLOW); break; + case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; case 0x182: map_key_clear(KEY_BOOKMARKS); break; case 0x183: map_key_clear(KEY_CONFIG); break; case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; @@ -729,6 +795,8 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel case 0x18c: map_key_clear(KEY_VOICEMAIL); break; case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; case 0x18e: map_key_clear(KEY_CALENDAR); break; + case 0x18f: map_key_clear(KEY_TASKMANAGER); break; + case 0x190: map_key_clear(KEY_JOURNAL); break; case 0x191: map_key_clear(KEY_FINANCE); break; case 0x192: map_key_clear(KEY_CALC); break; case 0x193: map_key_clear(KEY_PLAYER); break; @@ -737,10 +805,16 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel case 0x199: map_key_clear(KEY_CHAT); break; case 0x19c: map_key_clear(KEY_LOGOFF); break; case 0x19e: map_key_clear(KEY_COFFEE); break; + case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; + case 0x1a2: map_key_clear(KEY_APPSELECT); break; + case 0x1a3: map_key_clear(KEY_NEXT); break; + case 0x1a4: map_key_clear(KEY_PREVIOUS); break; case 0x1a6: map_key_clear(KEY_HELP); break; case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; case 0x1ae: map_key_clear(KEY_KEYBOARD); break; + case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; + case 0x1b4: map_key_clear(KEY_FILE); break; case 0x1b6: map_key_clear(KEY_IMAGES); break; case 0x1b7: map_key_clear(KEY_AUDIO); break; case 0x1b8: map_key_clear(KEY_VIDEO); break; @@ -812,6 +886,15 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel } break; + case HID_UP_HPVENDOR2: + set_bit(EV_REP, input->evbit); + switch (usage->hid & HID_USAGE) { + case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; + case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; + default: goto ignore; + } + break; + case HID_UP_MSVENDOR: goto ignore; @@ -986,8 +1069,18 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct return; } - /* Ignore out-of-range values as per HID specification, section 5.10 */ - if (value < field->logical_minimum || value > field->logical_maximum) { + /* + * Ignore out-of-range values as per HID specification, + * section 5.10 and 6.2.25. + * + * The logical_minimum < logical_maximum check is done so that we + * don't unintentionally discard values sent by devices which + * don't specify logical min and max. + */ + if ((field->flags & HID_MAIN_ITEM_VARIABLE) && + (field->logical_minimum < field->logical_maximum) && + (value < field->logical_minimum || + value > field->logical_maximum)) { dbg_hid("Ignoring out-of-range value %x\n", value); return; } @@ -1073,6 +1166,77 @@ unsigned int hidinput_count_leds(struct hid_device *hid) } EXPORT_SYMBOL_GPL(hidinput_count_leds); +static void hidinput_led_worker(struct work_struct *work) +{ + struct hid_device *hid = container_of(work, struct hid_device, + led_work); + struct hid_field *field; + struct hid_report *report; + int len, ret; + __u8 *buf; + + field = hidinput_get_led_field(hid); + if (!field) + return; + + /* + * field->report is accessed unlocked regarding HID core. So there might + * be another incoming SET-LED request from user-space, which changes + * the LED state while we assemble our outgoing buffer. However, this + * doesn't matter as hid_output_report() correctly converts it into a + * boolean value no matter what information is currently set on the LED + * field (even garbage). So the remote device will always get a valid + * request. + * And in case we send a wrong value, a next led worker is spawned + * for every SET-LED request so the following worker will send the + * correct value, guaranteed! + */ + + report = field->report; + + /* use custom SET_REPORT request if possible (asynchronous) */ + if (hid->ll_driver->request) + return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); + + /* fall back to generic raw-output-report */ + len = ((report->size - 1) >> 3) + 1 + (report->id > 0); + buf = hid_alloc_report_buf(report, GFP_KERNEL); + if (!buf) + return; + + hid_output_report(report, buf); + /* synchronous output report */ + ret = hid_hw_output_report(hid, buf, len); + if (ret == -ENOSYS) + hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, + HID_REQ_SET_REPORT); + kfree(buf); +} + +static int hidinput_input_event(struct input_dev *dev, unsigned int type, + unsigned int code, int value) +{ + struct hid_device *hid = input_get_drvdata(dev); + struct hid_field *field; + int offset; + + if (type == EV_FF) + return input_ff_event(dev, type, code, value); + + if (type != EV_LED) + return -1; + + if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { + hid_warn(dev, "event field not found\n"); + return -1; + } + + hid_set_field(field, offset, value); + + schedule_work(&hid->led_work); + return 0; +} + static int hidinput_open(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); @@ -1096,7 +1260,11 @@ static void report_features(struct hid_device *hid) rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; list_for_each_entry(rep, &rep_enum->report_list, list) - for (i = 0; i < rep->maxfield; i++) + for (i = 0; i < rep->maxfield; i++) { + /* Ignore if report count is out of bounds. */ + if (rep->field[i]->report_count < 1) + continue; + for (j = 0; j < rep->field[i]->maxusage; j++) { /* Verify if Battery Strength feature is available */ hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]); @@ -1105,6 +1273,100 @@ static void report_features(struct hid_device *hid) drv->feature_mapping(hid, rep->field[i], rep->field[i]->usage + j); } + } +} + +static struct hid_input *hidinput_allocate(struct hid_device *hid) +{ + struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); + struct input_dev *input_dev = input_allocate_device(); + if (!hidinput || !input_dev) { + kfree(hidinput); + input_free_device(input_dev); + hid_err(hid, "Out of memory during hid input probe\n"); + return NULL; + } + + input_set_drvdata(input_dev, hid); + input_dev->event = hidinput_input_event; + input_dev->open = hidinput_open; + input_dev->close = hidinput_close; + input_dev->setkeycode = hidinput_setkeycode; + input_dev->getkeycode = hidinput_getkeycode; + + input_dev->name = hid->name; + input_dev->phys = hid->phys; + input_dev->uniq = hid->uniq; + input_dev->id.bustype = hid->bus; + input_dev->id.vendor = hid->vendor; + input_dev->id.product = hid->product; + input_dev->id.version = hid->version; + input_dev->dev.parent = &hid->dev; + hidinput->input = input_dev; + list_add_tail(&hidinput->list, &hid->inputs); + + return hidinput; +} + +static bool hidinput_has_been_populated(struct hid_input *hidinput) +{ + int i; + unsigned long r = 0; + + for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) + r |= hidinput->input->evbit[i]; + + for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) + r |= hidinput->input->keybit[i]; + + for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) + r |= hidinput->input->relbit[i]; + + for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) + r |= hidinput->input->absbit[i]; + + for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) + r |= hidinput->input->mscbit[i]; + + for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) + r |= hidinput->input->ledbit[i]; + + for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) + r |= hidinput->input->sndbit[i]; + + for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) + r |= hidinput->input->ffbit[i]; + + for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) + r |= hidinput->input->swbit[i]; + + return !!r; +} + +static void hidinput_cleanup_hidinput(struct hid_device *hid, + struct hid_input *hidinput) +{ + struct hid_report *report; + int i, k; + + list_del(&hidinput->list); + input_free_device(hidinput->input); + + for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { + if (k == HID_OUTPUT_REPORT && + hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) + continue; + + list_for_each_entry(report, &hid->report_enum[k].report_list, + list) { + + for (i = 0; i < report->maxfield; i++) + if (report->field[i]->hidinput == hidinput) + report->field[i]->hidinput = NULL; + } + } + + kfree(hidinput); } /* @@ -1115,12 +1377,13 @@ 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; int i, j, k; INIT_LIST_HEAD(&hid->inputs); + INIT_WORK(&hid->led_work, hidinput_led_worker); if (!force) { for (i = 0; i < hid->maxcollection; i++) { @@ -1148,33 +1411,9 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) continue; if (!hidinput) { - hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!hidinput || !input_dev) { - kfree(hidinput); - input_free_device(input_dev); - hid_err(hid, "Out of memory during hid input probe\n"); + hidinput = hidinput_allocate(hid); + if (!hidinput) goto out_unwind; - } - - input_set_drvdata(input_dev, hid); - input_dev->event = - hid->ll_driver->hidinput_input_event; - input_dev->open = hidinput_open; - input_dev->close = hidinput_close; - input_dev->setkeycode = hidinput_setkeycode; - input_dev->getkeycode = hidinput_getkeycode; - - input_dev->name = hid->name; - input_dev->phys = hid->phys; - input_dev->uniq = hid->uniq; - input_dev->id.bustype = hid->bus; - input_dev->id.vendor = hid->vendor; - input_dev->id.product = hid->product; - input_dev->id.version = hid->version; - input_dev->dev.parent = hid->dev.parent; - hidinput->input = input_dev; - list_add_tail(&hidinput->list, &hid->inputs); } for (i = 0; i < report->maxfield; i++) @@ -1182,6 +1421,10 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) hidinput_configure_usage(hidinput, report->field[i], report->field[i]->usage + j); + if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && + !hidinput_has_been_populated(hidinput)) + continue; + if (hid->quirks & HID_QUIRK_MULTI_INPUT) { /* This will leave hidinput NULL, so that it * allocates another one if we have more inputs on @@ -1189,6 +1432,8 @@ 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; @@ -1196,15 +1441,24 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) } } - if (hid->quirks & HID_QUIRK_MULTITOUCH) { - /* generic hid does not know how to handle multitouch devices */ - if (hidinput) - goto out_cleanup; + if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) && + !hidinput_has_been_populated(hidinput)) { + /* no need to register an input device not populated */ + hidinput_cleanup_hidinput(hid, hidinput); + hidinput = NULL; + } + + if (list_empty(&hid->inputs)) { + hid_err(hid, "No inputs registered, leaving\n"); goto out_unwind; } - 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; @@ -1231,6 +1485,12 @@ void hidinput_disconnect(struct hid_device *hid) input_unregister_device(hidinput->input); kfree(hidinput); } + + /* led_work is spawned by input_dev callbacks, but doesn't access the + * parent input_dev at all. Once all input devices are removed, we + * know that led_work will never get restarted, so we can cancel it + * synchronously and are safe. */ + cancel_work_sync(&hid->led_work); } EXPORT_SYMBOL_GPL(hidinput_disconnect); |