| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Benjamin Tissoires | 6366 | 47.39% | 68 | 28.81% |
| Jason Gerecke | 2849 | 21.21% | 55 | 23.31% |
| Ping Cheng | 1304 | 9.71% | 35 | 14.83% |
| Aaron Skomra | 915 | 6.81% | 10 | 4.24% |
| Eduard Hasenleithner | 905 | 6.74% | 1 | 0.42% |
| Chris Bagwell | 507 | 3.77% | 8 | 3.39% |
| Oliver Neukum | 163 | 1.21% | 1 | 0.42% |
| Dmitry Torokhov | 122 | 0.91% | 8 | 3.39% |
| Bastien Nocera | 53 | 0.39% | 4 | 1.69% |
| Linus Torvalds (pre-git) | 40 | 0.30% | 7 | 2.97% |
| Krzysztof Kozlowski | 30 | 0.22% | 2 | 0.85% |
| Jason Childs | 28 | 0.21% | 1 | 0.42% |
| Henrik Rydberg | 25 | 0.19% | 2 | 0.85% |
| Greg Kroah-Hartman | 21 | 0.16% | 5 | 2.12% |
| Przemo Firszt | 13 | 0.10% | 4 | 1.69% |
| Geliang Tang | 9 | 0.07% | 2 | 0.85% |
| Denis Arefev | 9 | 0.07% | 1 | 0.42% |
| Dan Carpenter | 9 | 0.07% | 1 | 0.42% |
| Rikard Falkeborn | 8 | 0.06% | 1 | 0.42% |
| Arvind Yadav | 7 | 0.05% | 1 | 0.42% |
| Kees Cook | 6 | 0.04% | 1 | 0.42% |
| Geert Uytterhoeven | 6 | 0.04% | 1 | 0.42% |
| Christos Gkekas | 6 | 0.04% | 1 | 0.42% |
| Bastian Blank | 5 | 0.04% | 1 | 0.42% |
| Linus Torvalds | 4 | 0.03% | 2 | 0.85% |
| Daniel Mack | 4 | 0.03% | 1 | 0.42% |
| Wolfram Sang | 3 | 0.02% | 1 | 0.42% |
| Daniel M. Lambea | 3 | 0.02% | 1 | 0.42% |
| Rusty Russell | 3 | 0.02% | 1 | 0.42% |
| Aaron Ma | 2 | 0.01% | 1 | 0.42% |
| Axel Lin | 2 | 0.01% | 1 | 0.42% |
| Lee Jones | 1 | 0.01% | 1 | 0.42% |
| Thomas Gleixner | 1 | 0.01% | 1 | 0.42% |
| Grant Grundler | 1 | 0.01% | 1 | 0.42% |
| Christophe Jaillet | 1 | 0.01% | 1 | 0.42% |
| Jiapeng Chong | 1 | 0.01% | 1 | 0.42% |
| Adrian Bunk | 1 | 0.01% | 1 | 0.42% |
| caihuoqing | 1 | 0.01% | 1 | 0.42% |
| Total | 13434 | 236 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * USB Wacom tablet support - system specific code */ #include "wacom_wac.h" #include "wacom.h" #include <linux/input/mt.h> #define WAC_MSG_RETRIES 5 #define WAC_CMD_RETRIES 10 #define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP) #define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP) #define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP) static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf, size_t size, unsigned int retries) { int retval; do { retval = hid_hw_raw_request(hdev, buf[0], buf, size, type, HID_REQ_GET_REPORT); } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries); if (retval < 0) hid_err(hdev, "wacom_get_report: ran out of retries " "(last error = %d)\n", retval); return retval; } static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf, size_t size, unsigned int retries) { int retval; do { retval = hid_hw_raw_request(hdev, buf[0], buf, size, type, HID_REQ_SET_REPORT); } while ((retval == -ETIMEDOUT || retval == -EAGAIN) && --retries); if (retval < 0) hid_err(hdev, "wacom_set_report: ran out of retries " "(last error = %d)\n", retval); return retval; } static void wacom_wac_queue_insert(struct hid_device *hdev, struct kfifo_rec_ptr_2 *fifo, u8 *raw_data, int size) { bool warned = false; while (kfifo_avail(fifo) < size) { if (!warned) hid_warn(hdev, "%s: kfifo has filled, starting to drop events\n", __func__); warned = true; kfifo_skip(fifo); } kfifo_in(fifo, raw_data, size); } static void wacom_wac_queue_flush(struct hid_device *hdev, struct kfifo_rec_ptr_2 *fifo) { while (!kfifo_is_empty(fifo)) { u8 buf[WACOM_PKGLEN_MAX]; int size; int err; size = kfifo_out(fifo, buf, sizeof(buf)); err = hid_report_raw_event(hdev, HID_INPUT_REPORT, buf, size, false); if (err) { hid_warn(hdev, "%s: unable to flush event due to error %d\n", __func__, err); } } } static int wacom_wac_pen_serial_enforce(struct hid_device *hdev, struct hid_report *report, u8 *raw_data, int report_size) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct wacom_features *features = &wacom_wac->features; bool flush = false; bool insert = false; int i, j; if (wacom_wac->serial[0] || !(features->quirks & WACOM_QUIRK_TOOLSERIAL)) return 0; /* Queue events which have invalid tool type or serial number */ for (i = 0; i < report->maxfield; i++) { for (j = 0; j < report->field[i]->maxusage; j++) { struct hid_field *field = report->field[i]; struct hid_usage *usage = &field->usage[j]; unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid); unsigned int offset; unsigned int size; unsigned int value; if (equivalent_usage != HID_DG_INRANGE && equivalent_usage != HID_DG_TOOLSERIALNUMBER && equivalent_usage != WACOM_HID_WD_SERIALHI && equivalent_usage != WACOM_HID_WD_TOOLTYPE) continue; offset = field->report_offset; size = field->report_size; value = hid_field_extract(hdev, raw_data+1, offset + j * size, size); /* If we go out of range, we need to flush the queue ASAP */ if (equivalent_usage == HID_DG_INRANGE) value = !value; if (value) { flush = true; switch (equivalent_usage) { case HID_DG_TOOLSERIALNUMBER: wacom_wac->serial[0] = value; break; case WACOM_HID_WD_SERIALHI: wacom_wac->serial[0] |= ((__u64)value) << 32; break; case WACOM_HID_WD_TOOLTYPE: wacom_wac->id[0] = value; break; } } else { insert = true; } } } if (flush) wacom_wac_queue_flush(hdev, wacom_wac->pen_fifo); else if (insert) wacom_wac_queue_insert(hdev, wacom_wac->pen_fifo, raw_data, report_size); return insert && !flush; } static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *raw_data, int size) { struct wacom *wacom = hid_get_drvdata(hdev); if (wacom->wacom_wac.features.type == BOOTLOADER) return 0; if (size > WACOM_PKGLEN_MAX) return 1; if (wacom_wac_pen_serial_enforce(hdev, report, raw_data, size)) return -1; memcpy(wacom->wacom_wac.data, raw_data, size); wacom_wac_irq(&wacom->wacom_wac, size); return 0; } static int wacom_open(struct input_dev *dev) { struct wacom *wacom = input_get_drvdata(dev); return hid_hw_open(wacom->hdev); } static void wacom_close(struct input_dev *dev) { struct wacom *wacom = input_get_drvdata(dev); /* * wacom->hdev should never be null, but surprisingly, I had the case * once while unplugging the Wacom Wireless Receiver. */ if (wacom->hdev) hid_hw_close(wacom->hdev); } /* * Calculate the resolution of the X or Y axis using hidinput_calc_abs_res. */ static int wacom_calc_hid_res(int logical_extents, int physical_extents, unsigned unit, int exponent) { struct hid_field field = { .logical_maximum = logical_extents, .physical_maximum = physical_extents, .unit = unit, .unit_exponent = exponent, }; return hidinput_calc_abs_res(&field, ABS_X); } static void wacom_hid_usage_quirk(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_features *features = &wacom->wacom_wac.features; unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid); /* * The Dell Canvas 27 needs to be switched to its vendor-defined * report to provide the best resolution. */ if (hdev->vendor == USB_VENDOR_ID_WACOM && hdev->product == 0x4200 && field->application == HID_UP_MSVENDOR) { wacom->wacom_wac.mode_report = field->report->id; wacom->wacom_wac.mode_value = 2; } /* * ISDv4 devices which predate HID's adoption of the * HID_DG_BARELSWITCH2 usage use 0x000D0000 in its * position instead. We can accurately detect if a * usage with that value should be HID_DG_BARRELSWITCH2 * based on the surrounding usages, which have remained * constant across generations. */ if (features->type == HID_GENERIC && usage->hid == 0x000D0000 && field->application == HID_DG_PEN && field->physical == HID_DG_STYLUS) { int i = usage->usage_index; if (i-4 >= 0 && i+1 < field->maxusage && field->usage[i-4].hid == HID_DG_TIPSWITCH && field->usage[i-3].hid == HID_DG_BARRELSWITCH && field->usage[i-2].hid == HID_DG_ERASER && field->usage[i-1].hid == HID_DG_INVERT && field->usage[i+1].hid == HID_DG_INRANGE) { usage->hid = HID_DG_BARRELSWITCH2; } } /* * Wacom's AES devices use different vendor-defined usages to * report serial number information compared to their branded * hardware. The usages are also sometimes ill-defined and do * not have the correct logical min/max values set. Lets patch * the descriptor to use the branded usage convention and fix * the errors. */ if (usage->hid == WACOM_HID_WT_SERIALNUMBER && field->report_size == 16 && field->index + 2 < field->report->maxfield) { struct hid_field *a = field->report->field[field->index + 1]; struct hid_field *b = field->report->field[field->index + 2]; if (a->maxusage > 0 && a->usage[0].hid == HID_DG_TOOLSERIALNUMBER && a->report_size == 32 && b->maxusage > 0 && b->usage[0].hid == 0xFF000000 && b->report_size == 8) { features->quirks |= WACOM_QUIRK_AESPEN; usage->hid = WACOM_HID_WD_TOOLTYPE; field->logical_minimum = S16_MIN; field->logical_maximum = S16_MAX; a->logical_minimum = S32_MIN; a->logical_maximum = S32_MAX; b->usage[0].hid = WACOM_HID_WD_SERIALHI; b->logical_minimum = 0; b->logical_maximum = U8_MAX; } } /* 2nd-generation Intuos Pro Large has incorrect Y maximum */ if (hdev->vendor == USB_VENDOR_ID_WACOM && hdev->product == 0x0358 && WACOM_PEN_FIELD(field) && equivalent_usage == HID_GD_Y) { field->logical_maximum = 43200; } } static void wacom_feature_mapping(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_features *features = &wacom->wacom_wac.features; struct hid_data *hid_data = &wacom->wacom_wac.hid_data; unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid); u8 *data; int ret; u32 n; wacom_hid_usage_quirk(hdev, field, usage); switch (equivalent_usage) { case WACOM_HID_WD_TOUCH_RING_SETTING: wacom->generic_has_leds = true; break; case HID_DG_CONTACTMAX: /* leave touch_max as is if predefined */ if (!features->touch_max) { /* read manually */ n = hid_report_len(field->report); data = hid_alloc_report_buf(field->report, GFP_KERNEL); if (!data) break; data[0] = field->report->id; ret = wacom_get_report(hdev, HID_FEATURE_REPORT, data, n, WAC_CMD_RETRIES); if (ret == n && features->type == HID_GENERIC) { ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, data, n, 0); } else if (ret == 2 && features->type != HID_GENERIC) { features->touch_max = data[1]; } else { features->touch_max = 16; hid_warn(hdev, "wacom_feature_mapping: " "could not get HID_DG_CONTACTMAX, " "defaulting to %d\n", features->touch_max); } kfree(data); } break; case HID_DG_INPUTMODE: /* Ignore if value index is out of bounds. */ if (usage->usage_index >= field->report_count) { dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n"); break; } hid_data->inputmode = field->report->id; hid_data->inputmode_index = usage->usage_index; break; case HID_UP_DIGITIZER: if (field->report->id == 0x0B && (field->application == WACOM_HID_G9_PEN || field->application == WACOM_HID_G11_PEN)) { wacom->wacom_wac.mode_report = field->report->id; wacom->wacom_wac.mode_value = 0; } break; case WACOM_HID_WD_DATAMODE: wacom->wacom_wac.mode_report = field->report->id; wacom->wacom_wac.mode_value = 2; break; case WACOM_HID_UP_G9: case WACOM_HID_UP_G11: if (field->report->id == 0x03 && (field->application == WACOM_HID_G9_TOUCHSCREEN || field->application == WACOM_HID_G11_TOUCHSCREEN)) { wacom->wacom_wac.mode_report = field->report->id; wacom->wacom_wac.mode_value = 0; } break; case WACOM_HID_WD_OFFSETLEFT: case WACOM_HID_WD_OFFSETTOP: case WACOM_HID_WD_OFFSETRIGHT: case WACOM_HID_WD_OFFSETBOTTOM: /* read manually */ n = hid_report_len(field->report); data = hid_alloc_report_buf(field->report, GFP_KERNEL); if (!data) break; data[0] = field->report->id; ret = wacom_get_report(hdev, HID_FEATURE_REPORT, data, n, WAC_CMD_RETRIES); if (ret == n) { ret = hid_report_raw_event(hdev, HID_FEATURE_REPORT, data, n, 0); } else { hid_warn(hdev, "%s: could not retrieve sensor offsets\n", __func__); } kfree(data); break; } } /* * Interface Descriptor of wacom devices can be incomplete and * inconsistent so wacom_features table is used to store stylus * device's packet lengths, various maximum values, and tablet * resolution based on product ID's. * * For devices that contain 2 interfaces, wacom_features table is * inaccurate for the touch interface. Since the Interface Descriptor * for touch interfaces has pretty complete data, this function exists * to query tablet for this missing information instead of hard coding in * an additional table. * * A typical Interface Descriptor for a stylus will contain a * boot mouse application collection that is not of interest and this * function will ignore it. * * It also contains a digitizer application collection that also is not * of interest since any information it contains would be duplicate * of what is in wacom_features. Usually it defines a report of an array * of bytes that could be used as max length of the stylus packet returned. * If it happens to define a Digitizer-Stylus Physical Collection then * the X and Y logical values contain valid data but it is ignored. * * A typical Interface Descriptor for a touch interface will contain a * Digitizer-Finger Physical Collection which will define both logical * X/Y maximum as well as the physical size of tablet. Since touch * interfaces haven't supported pressure or distance, this is enough * information to override invalid values in the wacom_features table. * * Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful * data. We deal with them after returning from this function. */ static void wacom_usage_mapping(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_features *features = &wacom->wacom_wac.features; bool finger = WACOM_FINGER_FIELD(field); bool pen = WACOM_PEN_FIELD(field); unsigned equivalent_usage = wacom_equivalent_usage(usage->hid); /* * Requiring Stylus Usage will ignore boot mouse * X/Y values and some cases of invalid Digitizer X/Y * values commonly reported. */ if (pen) features->device_type |= WACOM_DEVICETYPE_PEN; else if (finger) features->device_type |= WACOM_DEVICETYPE_TOUCH; else return; wacom_hid_usage_quirk(hdev, field, usage); switch (equivalent_usage) { case HID_GD_X: features->x_max = field->logical_maximum; if (finger) { features->x_phy = field->physical_maximum; if ((features->type != BAMBOO_PT) && (features->type != BAMBOO_TOUCH)) { features->unit = field->unit; features->unitExpo = field->unit_exponent; } } break; case HID_GD_Y: features->y_max = field->logical_maximum; if (finger) { features->y_phy = field->physical_maximum; if ((features->type != BAMBOO_PT) && (features->type != BAMBOO_TOUCH)) { features->unit = field->unit; features->unitExpo = field->unit_exponent; } } break; case HID_DG_TIPPRESSURE: if (pen) features->pressure_max = field->logical_maximum; break; } if (features->type == HID_GENERIC) wacom_wac_usage_mapping(hdev, field, usage); } static void wacom_post_parse_hid(struct hid_device *hdev, struct wacom_features *features) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_wac *wacom_wac = &wacom->wacom_wac; if (features->type == HID_GENERIC) { /* Any last-minute generic device setup */ if (wacom_wac->has_mode_change) { if (wacom_wac->is_direct_mode) features->device_type |= WACOM_DEVICETYPE_DIRECT; else features->device_type &= ~WACOM_DEVICETYPE_DIRECT; } if (features->touch_max > 1) { if (features->device_type & WACOM_DEVICETYPE_DIRECT) input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max, INPUT_MT_DIRECT); else input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max, INPUT_MT_POINTER); } } } static void wacom_parse_hid(struct hid_device *hdev, struct wacom_features *features) { struct hid_report_enum *rep_enum; struct hid_report *hreport; int i, j; /* check features first */ rep_enum = &hdev->report_enum[HID_FEATURE_REPORT]; list_for_each_entry(hreport, &rep_enum->report_list, list) { for (i = 0; i < hreport->maxfield; i++) { /* Ignore if report count is out of bounds. */ if (hreport->field[i]->report_count < 1) continue; for (j = 0; j < hreport->field[i]->maxusage; j++) { wacom_feature_mapping(hdev, hreport->field[i], hreport->field[i]->usage + j); } } } /* now check the input usages */ rep_enum = &hdev->report_enum[HID_INPUT_REPORT]; list_for_each_entry(hreport, &rep_enum->report_list, list) { if (!hreport->maxfield) continue; for (i = 0; i < hreport->maxfield; i++) for (j = 0; j < hreport->field[i]->maxusage; j++) wacom_usage_mapping(hdev, hreport->field[i], hreport->field[i]->usage + j); } wacom_post_parse_hid(hdev, features); } static int wacom_hid_set_device_mode(struct hid_device *hdev) { struct wacom *wacom = hid_get_drvdata(hdev); struct hid_data *hid_data = &wacom->wacom_wac.hid_data; struct hid_report *r; struct hid_report_enum *re; if (hid_data->inputmode < 0) return 0; re = &(hdev->report_enum[HID_FEATURE_REPORT]); r = re->report_id_hash[hid_data->inputmode]; if (r) { r->field[0]->value[hid_data->inputmode_index] = 2; hid_hw_request(hdev, r, HID_REQ_SET_REPORT); } return 0; } static int wacom_set_device_mode(struct hid_device *hdev, struct wacom_wac *wacom_wac) { u8 *rep_data; struct hid_report *r; struct hid_report_enum *re; u32 length; int error = -ENOMEM, limit = 0; if (wacom_wac->mode_report < 0) return 0; re = &(hdev->report_enum[HID_FEATURE_REPORT]); r = re->report_id_hash[wacom_wac->mode_report]; if (!r) return -EINVAL; rep_data = hid_alloc_report_buf(r, GFP_KERNEL); if (!rep_data) return -ENOMEM; length = hid_report_len(r); do { rep_data[0] = wacom_wac->mode_report; rep_data[1] = wacom_wac->mode_value; error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, length, 1); if (error >= 0) error = wacom_get_report(hdev, HID_FEATURE_REPORT, rep_data, length, 1); } while (error >= 0 && rep_data[1] != wacom_wac->mode_report && limit++ < WAC_MSG_RETRIES); kfree(rep_data); return error < 0 ? error : 0; } static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed, struct wacom_features *features) { struct wacom *wacom = hid_get_drvdata(hdev); int ret; u8 rep_data[2]; switch (features->type) { case GRAPHIRE_BT: rep_data[0] = 0x03; rep_data[1] = 0x00; ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2, 3); if (ret >= 0) { rep_data[0] = speed == 0 ? 0x05 : 0x06; rep_data[1] = 0x00; ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2, 3); if (ret >= 0) { wacom->wacom_wac.bt_high_speed = speed; return 0; } } /* * Note that if the raw queries fail, it's not a hard failure * and it is safe to continue */ hid_warn(hdev, "failed to poke device, command %d, err %d\n", rep_data[0], ret); break; case INTUOS4WL: if (speed == 1) wacom->wacom_wac.bt_features &= ~0x20; else wacom->wacom_wac.bt_features |= 0x20; rep_data[0] = 0x03; rep_data[1] = wacom->wacom_wac.bt_features; ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2, 1); if (ret >= 0) wacom->wacom_wac.bt_high_speed = speed; break; } return 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 wacom *wacom) { struct hid_device *hdev = wacom->hdev; struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct wacom_features *features = &wacom_wac->features; if (hdev->bus == BUS_BLUETOOTH) return wacom_bt_query_tablet_data(hdev, 1, features); if (features->type != HID_GENERIC) { if (features->device_type & WACOM_DEVICETYPE_TOUCH) { if (features->type > TABLETPC) { /* MT Tablet PC touch */ wacom_wac->mode_report = 3; wacom_wac->mode_value = 4; } else if (features->type == WACOM_24HDT) { wacom_wac->mode_report = 18; wacom_wac->mode_value = 2; } else if (features->type == WACOM_27QHDT) { wacom_wac->mode_report = 131; wacom_wac->mode_value = 2; } else if (features->type == BAMBOO_PAD) { wacom_wac->mode_report = 2; wacom_wac->mode_value = 2; } } else if (features->device_type & WACOM_DEVICETYPE_PEN) { if (features->type <= BAMBOO_PT) { wacom_wac->mode_report = 2; wacom_wac->mode_value = 2; } } } wacom_set_device_mode(hdev, wacom_wac); if (features->type == HID_GENERIC) return wacom_hid_set_device_mode(hdev); return 0; } static void wacom_retrieve_hid_descriptor(struct hid_device *hdev, struct wacom_features *features) { struct wacom *wacom = hid_get_drvdata(hdev); struct usb_interface *intf = wacom->intf; /* default features */ features->x_fuzz = 4; features->y_fuzz = 4; features->pressure_fuzz = 0; features->distance_fuzz = 1; features->tilt_fuzz = 1; /* * The wireless device HID is basic and layout conflicts with * other tablets (monitor and touch interface can look like pen). * Skip the query for this type and modify defaults based on * interface number. */ if (features->type == WIRELESS && intf) { if (intf->cur_altsetting->desc.bInterfaceNumber == 0) features->device_type = WACOM_DEVICETYPE_WL_MONITOR; else features->device_type = WACOM_DEVICETYPE_NONE; return; } wacom_parse_hid(hdev, features); } struct wacom_hdev_data { struct list_head list; struct kref kref; struct hid_device *dev; struct wacom_shared shared; }; static LIST_HEAD(wacom_udev_list); static DEFINE_MUTEX(wacom_udev_list_lock); static bool wacom_are_sibling(struct hid_device *hdev, struct hid_device *sibling) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_features *features = &wacom->wacom_wac.features; struct wacom *sibling_wacom = hid_get_drvdata(sibling); struct wacom_features *sibling_features = &sibling_wacom->wacom_wac.features; __u32 oVid = features->oVid ? features->oVid : hdev->vendor; __u32 oPid = features->oPid ? features->oPid : hdev->product; /* The defined oVid/oPid must match that of the sibling */ if (features->oVid != HID_ANY_ID && sibling->vendor != oVid) return false; if (features->oPid != HID_ANY_ID && sibling->product != oPid) return false; /* * Devices with the same VID/PID must share the same physical * device path, while those with different VID/PID must share * the same physical parent device path. */ if (hdev->vendor == sibling->vendor && hdev->product == sibling->product) { if (!hid_compare_device_paths(hdev, sibling, '/')) return false; } else { if (!hid_compare_device_paths(hdev, sibling, '.')) return false; } /* Skip the remaining heuristics unless you are a HID_GENERIC device */ if (features->type != HID_GENERIC) return true; /* * Direct-input devices may not be siblings of indirect-input * devices. */ if ((features->device_type & WACOM_DEVICETYPE_DIRECT) && !(sibling_features->device_type & WACOM_DEVICETYPE_DIRECT)) return false; /* * Indirect-input devices may not be siblings of direct-input * devices. */ if (!(features->device_type & WACOM_DEVICETYPE_DIRECT) && (sibling_features->device_type & WACOM_DEVICETYPE_DIRECT)) return false; /* Pen devices may only be siblings of touch devices */ if ((features->device_type & WACOM_DEVICETYPE_PEN) && !(sibling_features->device_type & WACOM_DEVICETYPE_TOUCH)) return false; /* Touch devices may only be siblings of pen devices */ if ((features->device_type & WACOM_DEVICETYPE_TOUCH) && !(sibling_features->device_type & WACOM_DEVICETYPE_PEN)) return false; /* * No reason could be found for these two devices to NOT be * siblings, so there's a good chance they ARE siblings */ return true; } static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev) { struct wacom_hdev_data *data; /* Try to find an already-probed interface from the same device */ list_for_each_entry(data, &wacom_udev_list, list) { if (hid_compare_device_paths(hdev, data->dev, '/')) { kref_get(&data->kref); return data; } } /* Fallback to finding devices that appear to be "siblings" */ list_for_each_entry(data, &wacom_udev_list, list) { if (wacom_are_sibling(hdev, data->dev)) { kref_get(&data->kref); return data; } } return NULL; } static void wacom_release_shared_data(struct kref *kref) { struct wacom_hdev_data *data = container_of(kref, struct wacom_hdev_data, kref); mutex_lock(&wacom_udev_list_lock); list_del(&data->list); mutex_unlock(&wacom_udev_list_lock); kfree(data); } static void wacom_remove_shared_data(void *res) { struct wacom *wacom = res; struct wacom_hdev_data *data; struct wacom_wac *wacom_wac = &wacom->wacom_wac; if (wacom_wac->shared) { data = container_of(wacom_wac->shared, struct wacom_hdev_data, shared); if (wacom_wac->shared->touch == wacom->hdev) wacom_wac->shared->touch = NULL; else if (wacom_wac->shared->pen == wacom->hdev) wacom_wac->shared->pen = NULL; kref_put(&data->kref, wacom_release_shared_data); wacom_wac->shared = NULL; } } static int wacom_add_shared_data(struct hid_device *hdev) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct wacom_hdev_data *data; int retval = 0; mutex_lock(&wacom_udev_list_lock); data = wacom_get_hdev_data(hdev); if (!data) { data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL); if (!data) { mutex_unlock(&wacom_udev_list_lock); return -ENOMEM; } kref_init(&data->kref); data->dev = hdev; list_add_tail(&data->list, &wacom_udev_list); } mutex_unlock(&wacom_udev_list_lock); wacom_wac->shared = &data->shared; retval = devm_add_action_or_reset(&hdev->dev, wacom_remove_shared_data, wacom); if (retval) return retval; if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) wacom_wac->shared->touch = hdev; else if (wacom_wac->features.device_type & WACOM_DEVICETYPE_PEN) wacom_wac->shared->pen = hdev; return retval; } static int wacom_led_control(struct wacom *wacom) { unsigned char *buf; int retval; unsigned char report_id = WAC_CMD_LED_CONTROL; int buf_size = 9; if (!wacom->led.groups) return -ENOTSUPP; if (wacom->wacom_wac.features.type == REMOTE) return -ENOTSUPP; if (wacom->wacom_wac.pid) { /* wireless connected */ report_id = WAC_CMD_WL_LED_CONTROL; buf_size = 13; } else if (wacom->wacom_wac.features.type == INTUOSP2_BT) { report_id = WAC_CMD_WL_INTUOSP2; buf_size = 51; } buf = kzalloc(buf_size, GFP_KERNEL); if (!buf) return -ENOMEM; if (wacom->wacom_wac.features.type == HID_GENERIC) { buf[0] = WAC_CMD_LED_CONTROL_GENERIC; buf[1] = wacom->led.llv; buf[2] = wacom->led.groups[0].select & 0x03; } else if ((wacom->wacom_wac.features.type >= INTUOS5S && wacom->wacom_wac.features.type <= INTUOSPL)) { /* * Touch Ring and crop mark LED luminance may take on * one of four values: * 0 = Low; 1 = Medium; 2 = High; 3 = Off */ int ring_led = wacom->led.groups[0].select & 0x03; int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03; int crop_lum = 0; unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led); buf[0] = report_id; if (wacom->wacom_wac.pid) { wacom_get_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size, WAC_CMD_RETRIES); buf[0] = report_id; buf[4] = led_bits; } else buf[1] = led_bits; } else if (wacom->wacom_wac.features.type == INTUOSP2_BT) { buf[0] = report_id; buf[4] = 100; // Power Connection LED (ORANGE) buf[5] = 100; // BT Connection LED (BLUE) buf[6] = 100; // Paper Mode (RED?) buf[7] = 100; // Paper Mode (GREEN?) buf[8] = 100; // Paper Mode (BLUE?) buf[9] = wacom->led.llv; buf[10] = wacom->led.groups[0].select & 0x03; } else { int led = wacom->led.groups[0].select | 0x4; if (wacom->wacom_wac.features.type == WACOM_21UX2 || wacom->wacom_wac.features.type == WACOM_24HD) led |= (wacom->led.groups[1].select << 4) | 0x40; buf[0] = report_id; buf[1] = led; buf[2] = wacom->led.llv; buf[3] = wacom->led.hlv; buf[4] = wacom->led.img_lum; } retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size, WAC_CMD_RETRIES); kfree(buf); return retval; } static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id, const unsigned len, const void *img) { unsigned char *buf; int i, retval; const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */ buf = kzalloc(chunk_len + 3 , GFP_KERNEL); if (!buf) return -ENOMEM; /* Send 'start' command */ buf[0] = WAC_CMD_ICON_START; buf[1] = 1; retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2, WAC_CMD_RETRIES); if (retval < 0) goto out; buf[0] = xfer_id; buf[1] = button_id & 0x07; for (i = 0; i < 4; i++) { buf[2] = i; memcpy(buf + 3, img + i * chunk_len, chunk_len); retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, chunk_len + 3, WAC_CMD_RETRIES); if (retval < 0) break; } /* Send 'stop' */ buf[0] = WAC_CMD_ICON_START; buf[1] = 0; wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2, WAC_CMD_RETRIES); out: kfree(buf); return retval; } static ssize_t wacom_led_select_store(struct device *dev, int set_id, const char *buf, size_t count) { struct hid_device *hdev = to_hid_device(dev); struct wacom *wacom = hid_get_drvdata(hdev); unsigned int id; int err; err = kstrtouint(buf, 10, &id); if (err) return err; mutex_lock(&wacom->lock); wacom->led.groups[set_id].select = id & 0x3; err = wacom_led_control(wacom); mutex_unlock(&wacom->lock); return err < 0 ? err : count; } #define DEVICE_LED_SELECT_ATTR(SET_ID) \ static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \ struct device_attribute *attr, const char *buf, size_t count) \ { \ return wacom_led_select_store(dev, SET_ID, buf, count); \ } \ static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct hid_device *hdev = to_hid_device(dev);\ struct wacom *wacom = hid_get_drvdata(hdev); \ return scnprintf(buf, PAGE_SIZE, "%d\n", \ wacom->led.groups[SET_ID].select); \ } \ static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \ wacom_led##SET_ID##_select_show, \ wacom_led##SET_ID##_select_store) DEVICE_LED_SELECT_ATTR(0); DEVICE_LED_SELECT_ATTR(1); static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest, const char *buf, size_t count) { unsigned int value; int err; err = kstrtouint(buf, 10, &value); if (err) return err; mutex_lock(&wacom->lock); *dest = value & 0x7f; err = wacom_led_control(wacom); mutex_unlock(&wacom->lock); return err < 0 ? err : count; } #define DEVICE_LUMINANCE_ATTR(name, field) \ static ssize_t wacom_##name##_luminance_store(struct device *dev, \ struct device_attribute *attr, const char *buf, size_t count) \ { \ struct hid_device *hdev = to_hid_device(dev);\ struct wacom *wacom = hid_get_drvdata(hdev); \ \ return wacom_luminance_store(wacom, &wacom->led.field, \ buf, count); \ } \ static ssize_t wacom_##name##_luminance_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ struct wacom *wacom = dev_get_drvdata(dev); \ return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \ } \ static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \ wacom_##name##_luminance_show, \ wacom_##name##_luminance_store) DEVICE_LUMINANCE_ATTR(status0, llv); DEVICE_LUMINANCE_ATTR(status1, hlv); DEVICE_LUMINANCE_ATTR(buttons, img_lum); static ssize_t wacom_button_image_store(struct device *dev, int button_id, const char *buf, size_t count) { struct hid_device *hdev = to_hid_device(dev); struct wacom *wacom = hid_get_drvdata(hdev); int err; unsigned len; u8 xfer_id; if (hdev->bus == BUS_BLUETOOTH) { len = 256; xfer_id = WAC_CMD_ICON_BT_XFER; } else { len = 1024; xfer_id = WAC_CMD_ICON_XFER; } if (count != len) return -EINVAL; mutex_lock(&wacom->lock); err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf); mutex_unlock(&wacom->lock); return err < 0 ? err : count; } #define DEVICE_BTNIMG_ATTR(BUTTON_ID) \ static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \ struct device_attribute *attr, const char *buf, size_t count) \ { \ return wacom_button_image_store(dev, BUTTON_ID, buf, count); \ } \ static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \ NULL, wacom_btnimg##BUTTON_ID##_store) DEVICE_BTNIMG_ATTR(0); DEVICE_BTNIMG_ATTR(1); DEVICE_BTNIMG_ATTR(2); DEVICE_BTNIMG_ATTR(3); DEVICE_BTNIMG_ATTR(4); DEVICE_BTNIMG_ATTR(5); DEVICE_BTNIMG_ATTR(6); DEVICE_BTNIMG_ATTR(7); static struct attribute *cintiq_led_attrs[] = { &dev_attr_status_led0_select.attr, &dev_attr_status_led1_select.attr, NULL }; static const struct attribute_group cintiq_led_attr_group = { .name = "wacom_led", .attrs = cintiq_led_attrs, }; static struct attribute *intuos4_led_attrs[] = { &dev_attr_status0_luminance.attr, &dev_attr_status1_luminance.attr, &dev_attr_status_led0_select.attr, &dev_attr_buttons_luminance.attr, &dev_attr_button0_rawimg.attr, &dev_attr_button1_rawimg.attr, &dev_attr_button2_rawimg.attr, &dev_attr_button3_rawimg.attr, &dev_attr_button4_rawimg.attr, &dev_attr_button5_rawimg.attr, &dev_attr_button6_rawimg.attr, &dev_attr_button7_rawimg.attr, NULL }; static const struct attribute_group intuos4_led_attr_group = { .name = "wacom_led", .attrs = intuos4_led_attrs, }; static struct attribute *intuos5_led_attrs[] = { &dev_attr_status0_luminance.attr, &dev_attr_status_led0_select.attr, NULL }; static const struct attribute_group intuos5_led_attr_group = { .name = "wacom_led", .attrs = intuos5_led_attrs, }; static struct attribute *generic_led_attrs[] = { &dev_attr_status0_luminance.attr, &dev_attr_status_led0_select.attr, NULL }; static const struct attribute_group generic_led_attr_group = { .name = "wacom_led", .attrs = generic_led_attrs, }; struct wacom_sysfs_group_devres { const struct attribute_group *group; struct kobject *root; }; static void wacom_devm_sysfs_group_release(struct device *dev, void *res) { struct wacom_sysfs_group_devres *devres = res; struct kobject *kobj = devres->root; dev_dbg(dev, "%s: dropping reference to %s\n", __func__, devres->group->name); sysfs_remove_group(kobj, devres->group); } static int __wacom_devm_sysfs_create_group(struct wacom *wacom, struct kobject *root, const struct attribute_group *group) { struct wacom_sysfs_group_devres *devres; int error; devres = devres_alloc(wacom_devm_sysfs_group_release, sizeof(struct wacom_sysfs_group_devres), GFP_KERNEL); if (!devres) return -ENOMEM; devres->group = group; devres->root = root; error = sysfs_create_group(devres->root, group); if (error) { devres_free(devres); return error; } devres_add(&wacom->hdev->dev, devres); return 0; } static int wacom_devm_sysfs_create_group(struct wacom *wacom, const struct attribute_group *group) { return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj, group); } static void wacom_devm_kfifo_release(struct device *dev, void *res) { struct kfifo_rec_ptr_2 *devres = res; kfifo_free(devres); } static int wacom_devm_kfifo_alloc(struct wacom *wacom) { struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct kfifo_rec_ptr_2 *pen_fifo; int error; pen_fifo = devres_alloc(wacom_devm_kfifo_release, sizeof(struct kfifo_rec_ptr_2), GFP_KERNEL); if (!pen_fifo) return -ENOMEM; error = kfifo_alloc(pen_fifo, WACOM_PKGLEN_MAX, GFP_KERNEL); if (error) { devres_free(pen_fifo); return error; } devres_add(&wacom->hdev->dev, pen_fifo); wacom_wac->pen_fifo = pen_fifo; return 0; } enum led_brightness wacom_leds_brightness_get(struct wacom_led *led) { struct wacom *wacom = led->wacom; if (wacom->led.max_hlv) return led->hlv * LED_FULL / wacom->led.max_hlv; if (wacom->led.max_llv) return led->llv * LED_FULL / wacom->led.max_llv; /* device doesn't support brightness tuning */ return LED_FULL; } static enum led_brightness __wacom_led_brightness_get(struct led_classdev *cdev) { struct wacom_led *led = container_of(cdev, struct wacom_led, cdev); struct wacom *wacom = led->wacom; if (wacom->led.groups[led->group].select != led->id) return LED_OFF; return wacom_leds_brightness_get(led); } static int wacom_led_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { struct wacom_led *led = container_of(cdev, struct wacom_led, cdev); struct wacom *wacom = led->wacom; int error; mutex_lock(&wacom->lock); if (!wacom->led.groups || (brightness == LED_OFF && wacom->led.groups[led->group].select != led->id)) { error = 0; goto out; } led->llv = wacom->led.llv = wacom->led.max_llv * brightness / LED_FULL; led->hlv = wacom->led.hlv = wacom->led.max_hlv * brightness / LED_FULL; wacom->led.groups[led->group].select = led->id; error = wacom_led_control(wacom); out: mutex_unlock(&wacom->lock); return error; } static void wacom_led_readonly_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { } static int wacom_led_register_one(struct device *dev, struct wacom *wacom, struct wacom_led *led, unsigned int group, unsigned int id, bool read_only) { int error; char *name; name = devm_kasprintf(dev, GFP_KERNEL, "%s::wacom-%d.%d", dev_name(dev), group, id); if (!name) return -ENOMEM; if (!read_only) { led->trigger.name = name; error = devm_led_trigger_register(dev, &led->trigger); if (error) { hid_err(wacom->hdev, "failed to register LED trigger %s: %d\n", led->cdev.name, error); return error; } } led->group = group; led->id = id; led->wacom = wacom; led->llv = wacom->led.llv; led->hlv = wacom->led.hlv; led->cdev.name = name; led->cdev.max_brightness = LED_FULL; led->cdev.flags = LED_HW_PLUGGABLE; led->cdev.brightness_get = __wacom_led_brightness_get; if (!read_only) { led->cdev.brightness_set_blocking = wacom_led_brightness_set; led->cdev.default_trigger = led->cdev.name; } else { led->cdev.brightness_set = wacom_led_readonly_brightness_set; } error = devm_led_classdev_register(dev, &led->cdev); if (error) { hid_err(wacom->hdev, "failed to register LED %s: %d\n", led->cdev.name, error); led->cdev.name = NULL; return error; } return 0; } static void wacom_led_groups_release_one(void *data) { struct wacom_group_leds *group = data; devres_release_group(group->dev, group); } static int wacom_led_groups_alloc_and_register_one(struct device *dev, struct wacom *wacom, int group_id, int count, bool read_only) { struct wacom_led *leds; int i, error; if (group_id >= wacom->led.count || count <= 0) return -EINVAL; if (!devres_open_group(dev, &wacom->led.groups[group_id], GFP_KERNEL)) return -ENOMEM; leds = devm_kcalloc(dev, count, sizeof(struct wacom_led), GFP_KERNEL); if (!leds) { error = -ENOMEM; goto err; } wacom->led.groups[group_id].leds = leds; wacom->led.groups[group_id].count = count; for (i = 0; i < count; i++) { error = wacom_led_register_one(dev, wacom, &leds[i], group_id, i, read_only); if (error) goto err; } wacom->led.groups[group_id].dev = dev; devres_close_group(dev, &wacom->led.groups[group_id]); /* * There is a bug (?) in devm_led_classdev_register() in which its * increments the refcount of the parent. If the parent is an input * device, that means the ref count never reaches 0 when * devm_input_device_release() gets called. * This means that the LEDs are still there after disconnect. * Manually force the release of the group so that the leds are released * once we are done using them. */ error = devm_add_action_or_reset(&wacom->hdev->dev, wacom_led_groups_release_one, &wacom->led.groups[group_id]); if (error) return error; return 0; err: devres_release_group(dev, &wacom->led.groups[group_id]); return error; } struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group_id, unsigned int id) { struct wacom_group_leds *group; if (group_id >= wacom->led.count) return NULL; group = &wacom->led.groups[group_id]; if (!group->leds) return NULL; id %= group->count; return &group->leds[id]; } /* * wacom_led_next: gives the next available led with a wacom trigger. * * returns the next available struct wacom_led which has its default trigger * or the current one if none is available. */ struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur) { struct wacom_led *next_led; int group, next; if (!wacom || !cur) return NULL; group = cur->group; next = cur->id; do { next_led = wacom_led_find(wacom, group, ++next); if (!next_led || next_led == cur) return next_led; } while (next_led->cdev.trigger != &next_led->trigger); return next_led; } static void wacom_led_groups_release(void *data) { struct wacom *wacom = data; wacom->led.groups = NULL; wacom->led.count = 0; } static int wacom_led_groups_allocate(struct wacom *wacom, int count) { struct device *dev = &wacom->hdev->dev; struct wacom_group_leds *groups; int error; groups = devm_kcalloc(dev, count, sizeof(struct wacom_group_leds), GFP_KERNEL); if (!groups) return -ENOMEM; error = devm_add_action_or_reset(dev, wacom_led_groups_release, wacom); if (error) return error; wacom->led.groups = groups; wacom->led.count = count; return 0; } static int wacom_leds_alloc_and_register(struct wacom *wacom, int group_count, int led_per_group, bool read_only) { struct device *dev; int i, error; if (!wacom->wacom_wac.pad_input) return -EINVAL; dev = &wacom->wacom_wac.pad_input->dev; error = wacom_led_groups_allocate(wacom, group_count); if (error) return error; for (i = 0; i < group_count; i++) { error = wacom_led_groups_alloc_and_register_one(dev, wacom, i, led_per_group, read_only); if (error) return error; } return 0; } int wacom_initialize_leds(struct wacom *wacom) { int error; if (!(wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD)) return 0; /* Initialize default values */ switch (wacom->wacom_wac.features.type) { case HID_GENERIC: if (!wacom->generic_has_leds) return 0; wacom->led.llv = 100; wacom->led.max_llv = 100; error = wacom_leds_alloc_and_register(wacom, 1, 4, false); if (error) { hid_err(wacom->hdev, "cannot create leds err: %d\n", error); return error; } error = wacom_devm_sysfs_create_group(wacom, &generic_led_attr_group); break; case INTUOS4S: case INTUOS4: case INTUOS4WL: case INTUOS4L: wacom->led.llv = 10; wacom->led.hlv = 20; wacom->led.max_llv = 127; wacom->led.max_hlv = 127; wacom->led.img_lum = 10; error = wacom_leds_alloc_and_register(wacom, 1, 4, false); if (error) { hid_err(wacom->hdev, "cannot create leds err: %d\n", error); return error; } error = wacom_devm_sysfs_create_group(wacom, &intuos4_led_attr_group); break; case WACOM_24HD: case WACOM_21UX2: wacom->led.llv = 0; wacom->led.hlv = 0; wacom->led.img_lum = 0; error = wacom_leds_alloc_and_register(wacom, 2, 4, false); if (error) { hid_err(wacom->hdev, "cannot create leds err: %d\n", error); return error; } error = wacom_devm_sysfs_create_group(wacom, &cintiq_led_attr_group); break; case INTUOS5S: case INTUOS5: case INTUOS5L: case INTUOSPS: case INTUOSPM: case INTUOSPL: wacom->led.llv = 32; wacom->led.max_llv = 96; error = wacom_leds_alloc_and_register(wacom, 1, 4, false); if (error) { hid_err(wacom->hdev, "cannot create leds err: %d\n", error); return error; } error = wacom_devm_sysfs_create_group(wacom, &intuos5_led_attr_group); break; case INTUOSP2_BT: wacom->led.llv = 50; wacom->led.max_llv = 100; error = wacom_leds_alloc_and_register(wacom, 1, 4, false); if (error) { hid_err(wacom->hdev, "cannot create leds err: %d\n", error); return error; } return 0; case REMOTE: wacom->led.llv = 255; wacom->led.max_llv = 255; error = wacom_led_groups_allocate(wacom, 5); if (error) { hid_err(wacom->hdev, "cannot create leds err: %d\n", error); return error; } return 0; default: return 0; } if (error) { hid_err(wacom->hdev, "cannot create sysfs group err: %d\n", error); return error; } return 0; } static void wacom_init_work(struct work_struct *work) { struct wacom *wacom = container_of(work, struct wacom, init_work.work); _wacom_query_tablet_data(wacom); wacom_led_control(wacom); } static void wacom_query_tablet_data(struct wacom *wacom) { schedule_delayed_work(&wacom->init_work, msecs_to_jiffies(1000)); } static enum power_supply_property wacom_battery_props[] = { POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_SCOPE, POWER_SUPPLY_PROP_CAPACITY }; static int wacom_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct wacom_battery *battery = power_supply_get_drvdata(psy); int ret = 0; switch (psp) { case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = battery->wacom->wacom_wac.name; break; case POWER_SUPPLY_PROP_PRESENT: val->intval = battery->bat_connected; break; case POWER_SUPPLY_PROP_SCOPE: val->intval = POWER_SUPPLY_SCOPE_DEVICE; break; case POWER_SUPPLY_PROP_CAPACITY: val->intval = battery->battery_capacity; break; case POWER_SUPPLY_PROP_STATUS: if (battery->bat_status != WACOM_POWER_SUPPLY_STATUS_AUTO) val->intval = battery->bat_status; else if (battery->bat_charging) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (battery->battery_capacity == 100 && battery->ps_connected) val->intval = POWER_SUPPLY_STATUS_FULL; else if (battery->ps_connected) val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; else val->intval = POWER_SUPPLY_STATUS_DISCHARGING; break; default: ret = -EINVAL; break; } return ret; } static int __wacom_initialize_battery(struct wacom *wacom, struct wacom_battery *battery) { static atomic_t battery_no = ATOMIC_INIT(0); struct device *dev = &wacom->hdev->dev; struct power_supply_config psy_cfg = { .drv_data = battery, }; struct power_supply *ps_bat; struct power_supply_desc *bat_desc = &battery->bat_desc; unsigned long n; int error; if (!devres_open_group(dev, bat_desc, GFP_KERNEL)) return -ENOMEM; battery->wacom = wacom; n = atomic_inc_return(&battery_no) - 1; bat_desc->properties = wacom_battery_props; bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props); bat_desc->get_property = wacom_battery_get_property; sprintf(battery->bat_name, "wacom_battery_%ld", n); bat_desc->name = battery->bat_name; bat_desc->type = POWER_SUPPLY_TYPE_BATTERY; bat_desc->use_for_apm = 0; ps_bat = devm_power_supply_register(dev, bat_desc, &psy_cfg); if (IS_ERR(ps_bat)) { error = PTR_ERR(ps_bat); goto err; } power_supply_powers(ps_bat, &wacom->hdev->dev); battery->battery = ps_bat; devres_close_group(dev, bat_desc); return 0; err: devres_release_group(dev, bat_desc); return error; } static int wacom_initialize_battery(struct wacom *wacom) { if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) return __wacom_initialize_battery(wacom, &wacom->battery); return 0; } static void wacom_destroy_battery(struct wacom *wacom) { if (wacom->battery.battery) { devres_release_group(&wacom->hdev->dev, &wacom->battery.bat_desc); wacom->battery.battery = NULL; } } static ssize_t wacom_show_speed(struct device *dev, struct device_attribute *attr, char *buf) { struct hid_device *hdev = to_hid_device(dev); struct wacom *wacom = hid_get_drvdata(hdev); return sysfs_emit(buf, "%i\n", wacom->wacom_wac.bt_high_speed); } static ssize_t wacom_store_speed(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct hid_device *hdev = to_hid_device(dev); struct wacom *wacom = hid_get_drvdata(hdev); u8 new_speed; if (kstrtou8(buf, 0, &new_speed)) return -EINVAL; if (new_speed != 0 && new_speed != 1) return -EINVAL; wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features); return count; } static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM, wacom_show_speed, wacom_store_speed); static ssize_t wacom_show_remote_mode(struct kobject *kobj, struct kobj_attribute *kattr, char *buf, int index) { struct device *dev = kobj_to_dev(kobj->parent); struct hid_device *hdev = to_hid_device(dev); struct wacom *wacom = hid_get_drvdata(hdev); u8 mode; mode = wacom->led.groups[index].select; return sprintf(buf, "%d\n", mode < 3 ? mode : -1); } #define DEVICE_EKR_ATTR_GROUP(SET_ID) \ static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \ struct kobj_attribute *kattr, char *buf) \ { \ return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \ } \ static struct kobj_attribute remote##SET_ID##_mode_attr = { \ .attr = {.name = "remote_mode", \ .mode = DEV_ATTR_RO_PERM}, \ .show = wacom_show_remote##SET_ID##_mode, \ }; \ static struct attribute *remote##SET_ID##_serial_attrs[] = { \ &remote##SET_ID##_mode_attr.attr, \ NULL \ }; \ static const struct attribute_group remote##SET_ID##_serial_group = { \ .name = NULL, \ .attrs = remote##SET_ID##_serial_attrs, \ } DEVICE_EKR_ATTR_GROUP(0); DEVICE_EKR_ATTR_GROUP(1); DEVICE_EKR_ATTR_GROUP(2); DEVICE_EKR_ATTR_GROUP(3); DEVICE_EKR_ATTR_GROUP(4); static int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index) { int error = 0; struct wacom_remote *remote = wacom->remote; remote->remotes[index].group.name = devm_kasprintf(&wacom->hdev->dev, GFP_KERNEL, "%d", serial); if (!remote->remotes[index].group.name) return -ENOMEM; error = __wacom_devm_sysfs_create_group(wacom, remote->remote_dir, &remote->remotes[index].group); if (error) { remote->remotes[index].group.name = NULL; hid_err(wacom->hdev, "cannot create sysfs group err: %d\n", error); return error; } return 0; } static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector) { const size_t buf_size = 2; unsigned char *buf; int retval; buf = kzalloc(buf_size, GFP_KERNEL); if (!buf) return -ENOMEM; buf[0] = WAC_CMD_DELETE_PAIRING; buf[1] = selector; retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf, buf_size, WAC_CMD_RETRIES); kfree(buf); return retval; } static ssize_t wacom_store_unpair_remote(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count) { unsigned char selector = 0; struct device *dev = kobj_to_dev(kobj->parent); struct hid_device *hdev = to_hid_device(dev); struct wacom *wacom = hid_get_drvdata(hdev); int err; if (!strncmp(buf, "*\n", 2)) { selector = WAC_CMD_UNPAIR_ALL; } else { hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n", buf); return -1; } mutex_lock(&wacom->lock); err = wacom_cmd_unpair_remote(wacom, selector); mutex_unlock(&wacom->lock); return err < 0 ? err : count; } static struct kobj_attribute unpair_remote_attr = { .attr = {.name = "unpair_remote", .mode = 0200}, .store = wacom_store_unpair_remote, }; static const struct attribute *remote_unpair_attrs[] = { &unpair_remote_attr.attr, NULL }; static void wacom_remotes_destroy(void *data) { struct wacom *wacom = data; struct wacom_remote *remote = wacom->remote; if (!remote) return; kobject_put(remote->remote_dir); kfifo_free(&remote->remote_fifo); wacom->remote = NULL; } static int wacom_initialize_remotes(struct wacom *wacom) { int error = 0; struct wacom_remote *remote; int i; if (wacom->wacom_wac.features.type != REMOTE) return 0; remote = devm_kzalloc(&wacom->hdev->dev, sizeof(*wacom->remote), GFP_KERNEL); if (!remote) return -ENOMEM; wacom->remote = remote; spin_lock_init(&remote->remote_lock); error = kfifo_alloc(&remote->remote_fifo, 5 * sizeof(struct wacom_remote_data), GFP_KERNEL); if (error) { hid_err(wacom->hdev, "failed allocating remote_fifo\n"); return -ENOMEM; } remote->remotes[0].group = remote0_serial_group; remote->remotes[1].group = remote1_serial_group; remote->remotes[2].group = remote2_serial_group; remote->remotes[3].group = remote3_serial_group; remote->remotes[4].group = remote4_serial_group; remote->remote_dir = kobject_create_and_add("wacom_remote", &wacom->hdev->dev.kobj); if (!remote->remote_dir) return -ENOMEM; error = sysfs_create_files(remote->remote_dir, remote_unpair_attrs); if (error) { hid_err(wacom->hdev, "cannot create sysfs group err: %d\n", error); return error; } for (i = 0; i < WACOM_MAX_REMOTES; i++) { wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN; remote->remotes[i].serial = 0; } error = devm_add_action_or_reset(&wacom->hdev->dev, wacom_remotes_destroy, wacom); if (error) return error; return 0; } static struct input_dev *wacom_allocate_input(struct wacom *wacom) { struct input_dev *input_dev; struct hid_device *hdev = wacom->hdev; struct wacom_wac *wacom_wac = &(wacom->wacom_wac); input_dev = devm_input_allocate_device(&hdev->dev); if (!input_dev) return NULL; input_dev->name = wacom_wac->features.name; input_dev->phys = hdev->phys; input_dev->dev.parent = &hdev->dev; input_dev->open = wacom_open; input_dev->close = wacom_close; input_dev->uniq = hdev->uniq; input_dev->id.bustype = hdev->bus; input_dev->id.vendor = hdev->vendor; input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product; input_dev->id.version = hdev->version; input_set_drvdata(input_dev, wacom); return input_dev; } static int wacom_allocate_inputs(struct wacom *wacom) { struct wacom_wac *wacom_wac = &(wacom->wacom_wac); wacom_wac->pen_input = wacom_allocate_input(wacom); wacom_wac->touch_input = wacom_allocate_input(wacom); wacom_wac->pad_input = wacom_allocate_input(wacom); if (!wacom_wac->pen_input || !wacom_wac->touch_input || !wacom_wac->pad_input) return -ENOMEM; wacom_wac->pen_input->name = wacom_wac->pen_name; wacom_wac->touch_input->name = wacom_wac->touch_name; wacom_wac->pad_input->name = wacom_wac->pad_name; return 0; } static int wacom_register_inputs(struct wacom *wacom) { struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev; struct wacom_wac *wacom_wac = &(wacom->wacom_wac); int error = 0; pen_input_dev = wacom_wac->pen_input; touch_input_dev = wacom_wac->touch_input; pad_input_dev = wacom_wac->pad_input; if (!pen_input_dev || !touch_input_dev || !pad_input_dev) return -EINVAL; error = wacom_setup_pen_input_capabilities(pen_input_dev, wacom_wac); if (error) { /* no pen in use on this interface */ input_free_device(pen_input_dev); wacom_wac->pen_input = NULL; pen_input_dev = NULL; } else { error = input_register_device(pen_input_dev); if (error) goto fail; } error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac); if (error) { /* no touch in use on this interface */ input_free_device(touch_input_dev); wacom_wac->touch_input = NULL; touch_input_dev = NULL; } else { error = input_register_device(touch_input_dev); if (error) goto fail; } error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac); if (error) { /* no pad events using this interface */ input_free_device(pad_input_dev); wacom_wac->pad_input = NULL; pad_input_dev = NULL; } else { error = input_register_device(pad_input_dev); if (error) goto fail; } return 0; fail: wacom_wac->pad_input = NULL; wacom_wac->touch_input = NULL; wacom_wac->pen_input = NULL; return error; } /* * Not all devices report physical dimensions from HID. * Compute the default from hardcoded logical dimension * and resolution before driver overwrites them. */ static void wacom_set_default_phy(struct wacom_features *features) { if (features->x_resolution) { features->x_phy = (features->x_max * 100) / features->x_resolution; features->y_phy = (features->y_max * 100) / features->y_resolution; } } static void wacom_calculate_res(struct wacom_features *features) { /* set unit to "100th of a mm" for devices not reported by HID */ if (!features->unit) { features->unit = 0x11; features->unitExpo = -3; } features->x_resolution = wacom_calc_hid_res(features->x_max, features->x_phy, features->unit, features->unitExpo); features->y_resolution = wacom_calc_hid_res(features->y_max, features->y_phy, features->unit, features->unitExpo); } void wacom_battery_work(struct work_struct *work) { struct wacom *wacom = container_of(work, struct wacom, battery_work); if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) && !wacom->battery.battery) { wacom_initialize_battery(wacom); } else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) && wacom->battery.battery) { wacom_destroy_battery(wacom); } } static size_t wacom_compute_pktlen(struct hid_device *hdev) { struct hid_report_enum *report_enum; struct hid_report *report; size_t size = 0; report_enum = hdev->report_enum + HID_INPUT_REPORT; list_for_each_entry(report, &report_enum->report_list, list) { size_t report_size = hid_report_len(report); if (report_size > size) size = report_size; } return size; } static void wacom_update_name(struct wacom *wacom, const char *suffix) { struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct wacom_features *features = &wacom_wac->features; char name[WACOM_NAME_MAX - 20]; /* Leave some room for suffixes */ /* Generic devices name unspecified */ if ((features->type == HID_GENERIC) && !strcmp("Wacom HID", features->name)) { char *product_name = wacom->hdev->name; if (hid_is_usb(wacom->hdev)) { struct usb_interface *intf = to_usb_interface(wacom->hdev->dev.parent); struct usb_device *dev = interface_to_usbdev(intf); product_name = dev->product; } if (wacom->hdev->bus == BUS_I2C) { snprintf(name, sizeof(name), "%s %X", features->name, wacom->hdev->product); } else if (strstr(product_name, "Wacom") || strstr(product_name, "wacom") || strstr(product_name, "WACOM")) { if (strscpy(name, product_name, sizeof(name)) < 0) { hid_warn(wacom->hdev, "String overflow while assembling device name"); } } else { snprintf(name, sizeof(name), "Wacom %s", product_name); } /* strip out excess whitespaces */ while (1) { char *gap = strstr(name, " "); if (gap == NULL) break; /* shift everything including the terminator */ memmove(gap, gap+1, strlen(gap)); } /* get rid of trailing whitespace */ if (name[strlen(name)-1] == ' ') name[strlen(name)-1] = '\0'; } else { if (strscpy(name, features->name, sizeof(name)) < 0) { hid_warn(wacom->hdev, "String overflow while assembling device name"); } } snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s", name, suffix); /* Append the device type to the name */ snprintf(wacom_wac->pen_name, sizeof(wacom_wac->pen_name), "%s%s Pen", name, suffix); snprintf(wacom_wac->touch_name, sizeof(wacom_wac->touch_name), "%s%s Finger", name, suffix); snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name), "%s%s Pad", name, suffix); } static void wacom_release_resources(struct wacom *wacom) { struct hid_device *hdev = wacom->hdev; if (!wacom->resources) return; devres_release_group(&hdev->dev, wacom); wacom->resources = false; wacom->wacom_wac.pen_input = NULL; wacom->wacom_wac.touch_input = NULL; wacom->wacom_wac.pad_input = NULL; } static void wacom_set_shared_values(struct wacom_wac *wacom_wac) { if (wacom_wac->features.device_type & WACOM_DEVICETYPE_TOUCH) { wacom_wac->shared->type = wacom_wac->features.type; wacom_wac->shared->touch_input = wacom_wac->touch_input; } if (wacom_wac->has_mute_touch_switch) { wacom_wac->shared->has_mute_touch_switch = true; /* Hardware touch switch may be off. Wait until * we know the switch state to decide is_touch_on. * Softkey state should be initialized to "on" to * match historic default. */ if (wacom_wac->is_soft_touch_switch) wacom_wac->shared->is_touch_on = true; } if (wacom_wac->shared->has_mute_touch_switch && wacom_wac->shared->touch_input) { set_bit(EV_SW, wacom_wac->shared->touch_input->evbit); input_set_capability(wacom_wac->shared->touch_input, EV_SW, SW_MUTE_DEVICE); } } static int wacom_parse_and_register(struct wacom *wacom, bool wireless) { struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct wacom_features *features = &wacom_wac->features; struct hid_device *hdev = wacom->hdev; int error; unsigned int connect_mask = HID_CONNECT_HIDRAW; features->pktlen = wacom_compute_pktlen(hdev); if (features->pktlen > WACOM_PKGLEN_MAX) return -EINVAL; if (!devres_open_group(&hdev->dev, wacom, GFP_KERNEL)) return -ENOMEM; wacom->resources = true; error = wacom_allocate_inputs(wacom); if (error) goto fail; /* * Bamboo Pad has a generic hid handling for the Pen, and we switch it * into debug mode for the touch part. * We ignore the other interfaces. */ if (features->type == BAMBOO_PAD) { if (features->pktlen == WACOM_PKGLEN_PENABLED) { features->type = HID_GENERIC; } else if ((features->pktlen != WACOM_PKGLEN_BPAD_TOUCH) && (features->pktlen != WACOM_PKGLEN_BPAD_TOUCH_USB)) { error = -ENODEV; goto fail; } } /* set the default size in case we do not get them from hid */ wacom_set_default_phy(features); /* Retrieve the physical and logical size for touch devices */ wacom_retrieve_hid_descriptor(hdev, features); wacom_setup_device_quirks(wacom); if (features->device_type == WACOM_DEVICETYPE_NONE && features->type != WIRELESS) { error = features->type == HID_GENERIC ? -ENODEV : 0; dev_warn(&hdev->dev, "Unknown device_type for '%s'. %s.", hdev->name, error ? "Ignoring" : "Assuming pen"); if (error) goto fail; features->device_type |= WACOM_DEVICETYPE_PEN; } wacom_calculate_res(features); wacom_update_name(wacom, wireless ? " (WL)" : ""); /* pen only Bamboo neither support touch nor pad */ if ((features->type == BAMBOO_PEN) && ((features->device_type & WACOM_DEVICETYPE_TOUCH) || (features->device_type & WACOM_DEVICETYPE_PAD))) { error = -ENODEV; goto fail; } error = wacom_add_shared_data(hdev); if (error) goto fail; error = wacom_register_inputs(wacom); if (error) goto fail; if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) { error = wacom_initialize_leds(wacom); if (error) goto fail; error = wacom_initialize_remotes(wacom); if (error) goto fail; } if (features->type == HID_GENERIC) connect_mask |= HID_CONNECT_DRIVER; /* Regular HID work starts now */ error = hid_hw_start(hdev, connect_mask); if (error) { hid_err(hdev, "hw start failed\n"); goto fail; } if (!wireless) { /* Note that if query fails it is not a hard failure */ wacom_query_tablet_data(wacom); } /* touch only Bamboo doesn't support pen */ if ((features->type == BAMBOO_TOUCH) && (features->device_type & WACOM_DEVICETYPE_PEN)) { cancel_delayed_work_sync(&wacom->init_work); _wacom_query_tablet_data(wacom); error = -ENODEV; goto fail_quirks; } if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) { error = hid_hw_open(hdev); if (error) { hid_err(hdev, "hw open failed\n"); goto fail_quirks; } } wacom_set_shared_values(wacom_wac); devres_close_group(&hdev->dev, wacom); return 0; fail_quirks: hid_hw_stop(hdev); fail: wacom_release_resources(wacom); return error; } static void wacom_wireless_work(struct work_struct *work) { struct wacom *wacom = container_of(work, struct wacom, wireless_work); struct usb_device *usbdev = wacom->usbdev; struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct hid_device *hdev1, *hdev2; struct wacom *wacom1, *wacom2; struct wacom_wac *wacom_wac1, *wacom_wac2; int error; /* * Regardless if this is a disconnect or a new tablet, * remove any existing input and battery devices. */ wacom_destroy_battery(wacom); if (!usbdev) return; /* Stylus interface */ hdev1 = usb_get_intfdata(usbdev->config->interface[1]); wacom1 = hid_get_drvdata(hdev1); wacom_wac1 = &(wacom1->wacom_wac); wacom_release_resources(wacom1); /* Touch interface */ hdev2 = usb_get_intfdata(usbdev->config->interface[2]); wacom2 = hid_get_drvdata(hdev2); wacom_wac2 = &(wacom2->wacom_wac); wacom_release_resources(wacom2); if (wacom_wac->pid == 0) { hid_info(wacom->hdev, "wireless tablet disconnected\n"); } else { const struct hid_device_id *id = wacom_ids; hid_info(wacom->hdev, "wireless tablet connected with PID %x\n", wacom_wac->pid); while (id->bus) { if (id->vendor == USB_VENDOR_ID_WACOM && id->product == wacom_wac->pid) break; id++; } if (!id->bus) { hid_info(wacom->hdev, "ignoring unknown PID.\n"); return; } /* Stylus interface */ wacom_wac1->features = *((struct wacom_features *)id->driver_data); wacom_wac1->pid = wacom_wac->pid; hid_hw_stop(hdev1); error = wacom_parse_and_register(wacom1, true); if (error) goto fail; /* Touch interface */ if (wacom_wac1->features.touch_max || (wacom_wac1->features.type >= INTUOSHT && wacom_wac1->features.type <= BAMBOO_PT)) { wacom_wac2->features = *((struct wacom_features *)id->driver_data); wacom_wac2->pid = wacom_wac->pid; hid_hw_stop(hdev2); error = wacom_parse_and_register(wacom2, true); if (error) goto fail; } if (strscpy(wacom_wac->name, wacom_wac1->name, sizeof(wacom_wac->name)) < 0) { hid_warn(wacom->hdev, "String overflow while assembling device name"); } } return; fail: wacom_release_resources(wacom1); wacom_release_resources(wacom2); return; } static void wacom_remote_destroy_one(struct wacom *wacom, unsigned int index) { struct wacom_remote *remote = wacom->remote; u32 serial = remote->remotes[index].serial; int i; unsigned long flags; for (i = 0; i < WACOM_MAX_REMOTES; i++) { if (remote->remotes[i].serial == serial) { spin_lock_irqsave(&remote->remote_lock, flags); remote->remotes[i].registered = false; spin_unlock_irqrestore(&remote->remote_lock, flags); if (remote->remotes[i].battery.battery) devres_release_group(&wacom->hdev->dev, &remote->remotes[i].battery.bat_desc); if (remote->remotes[i].group.name) devres_release_group(&wacom->hdev->dev, &remote->remotes[i]); remote->remotes[i].serial = 0; remote->remotes[i].group.name = NULL; remote->remotes[i].battery.battery = NULL; wacom->led.groups[i].select = WACOM_STATUS_UNKNOWN; } } } static int wacom_remote_create_one(struct wacom *wacom, u32 serial, unsigned int index) { struct wacom_remote *remote = wacom->remote; struct device *dev = &wacom->hdev->dev; int error, k; /* A remote can pair more than once with an EKR, * check to make sure this serial isn't already paired. */ for (k = 0; k < WACOM_MAX_REMOTES; k++) { if (remote->remotes[k].serial == serial) break; } if (k < WACOM_MAX_REMOTES) { remote->remotes[index].serial = serial; return 0; } if (!devres_open_group(dev, &remote->remotes[index], GFP_KERNEL)) return -ENOMEM; error = wacom_remote_create_attr_group(wacom, serial, index); if (error) goto fail; remote->remotes[index].input = wacom_allocate_input(wacom); if (!remote->remotes[index].input) { error = -ENOMEM; goto fail; } remote->remotes[index].input->uniq = remote->remotes[index].group.name; remote->remotes[index].input->name = wacom->wacom_wac.pad_name; if (!remote->remotes[index].input->name) { error = -EINVAL; goto fail; } error = wacom_setup_pad_input_capabilities(remote->remotes[index].input, &wacom->wacom_wac); if (error) goto fail; remote->remotes[index].serial = serial; error = input_register_device(remote->remotes[index].input); if (error) goto fail; error = wacom_led_groups_alloc_and_register_one( &remote->remotes[index].input->dev, wacom, index, 3, true); if (error) goto fail; remote->remotes[index].registered = true; devres_close_group(dev, &remote->remotes[index]); return 0; fail: devres_release_group(dev, &remote->remotes[index]); remote->remotes[index].serial = 0; return error; } static int wacom_remote_attach_battery(struct wacom *wacom, int index) { struct wacom_remote *remote = wacom->remote; int error; if (!remote->remotes[index].registered) return 0; if (remote->remotes[index].battery.battery) return 0; if (wacom->led.groups[index].select == WACOM_STATUS_UNKNOWN) return 0; error = __wacom_initialize_battery(wacom, &wacom->remote->remotes[index].battery); if (error) return error; return 0; } static void wacom_remote_work(struct work_struct *work) { struct wacom *wacom = container_of(work, struct wacom, remote_work); struct wacom_remote *remote = wacom->remote; struct wacom_remote_data data; unsigned long flags; unsigned int count; u32 serial; int i; spin_lock_irqsave(&remote->remote_lock, flags); count = kfifo_out(&remote->remote_fifo, &data, sizeof(data)); if (count != sizeof(data)) { hid_err(wacom->hdev, "workitem triggered without status available\n"); spin_unlock_irqrestore(&remote->remote_lock, flags); return; } if (!kfifo_is_empty(&remote->remote_fifo)) wacom_schedule_work(&wacom->wacom_wac, WACOM_WORKER_REMOTE); spin_unlock_irqrestore(&remote->remote_lock, flags); for (i = 0; i < WACOM_MAX_REMOTES; i++) { serial = data.remote[i].serial; if (data.remote[i].connected) { if (remote->remotes[i].serial == serial) { wacom_remote_attach_battery(wacom, i); continue; } if (remote->remotes[i].serial) wacom_remote_destroy_one(wacom, i); wacom_remote_create_one(wacom, serial, i); } else if (remote->remotes[i].serial) { wacom_remote_destroy_one(wacom, i); } } } static void wacom_mode_change_work(struct work_struct *work) { struct wacom *wacom = container_of(work, struct wacom, mode_change_work); struct wacom_shared *shared = wacom->wacom_wac.shared; struct wacom *wacom1 = NULL; struct wacom *wacom2 = NULL; bool is_direct = wacom->wacom_wac.is_direct_mode; int error = 0; if (shared->pen) { wacom1 = hid_get_drvdata(shared->pen); wacom_release_resources(wacom1); hid_hw_stop(wacom1->hdev); wacom1->wacom_wac.has_mode_change = true; wacom1->wacom_wac.is_direct_mode = is_direct; } if (shared->touch) { wacom2 = hid_get_drvdata(shared->touch); wacom_release_resources(wacom2); hid_hw_stop(wacom2->hdev); wacom2->wacom_wac.has_mode_change = true; wacom2->wacom_wac.is_direct_mode = is_direct; } if (wacom1) { error = wacom_parse_and_register(wacom1, false); if (error) return; } if (wacom2) { error = wacom_parse_and_register(wacom2, false); if (error) return; } return; } static int wacom_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct wacom *wacom; struct wacom_wac *wacom_wac; struct wacom_features *features; int error; if (!id->driver_data) return -EINVAL; hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; /* hid-core sets this quirk for the boot interface */ hdev->quirks &= ~HID_QUIRK_NOGET; wacom = devm_kzalloc(&hdev->dev, sizeof(struct wacom), GFP_KERNEL); if (!wacom) return -ENOMEM; hid_set_drvdata(hdev, wacom); wacom->hdev = hdev; wacom_wac = &wacom->wacom_wac; wacom_wac->features = *((struct wacom_features *)id->driver_data); features = &wacom_wac->features; if (features->check_for_hid_type && features->hid_type != hdev->type) return -ENODEV; error = wacom_devm_kfifo_alloc(wacom); if (error) return error; wacom_wac->hid_data.inputmode = -1; wacom_wac->mode_report = -1; if (hid_is_usb(hdev)) { struct usb_interface *intf = to_usb_interface(hdev->dev.parent); struct usb_device *dev = interface_to_usbdev(intf); wacom->usbdev = dev; wacom->intf = intf; } mutex_init(&wacom->lock); INIT_DELAYED_WORK(&wacom->init_work, wacom_init_work); INIT_WORK(&wacom->wireless_work, wacom_wireless_work); INIT_WORK(&wacom->battery_work, wacom_battery_work); INIT_WORK(&wacom->remote_work, wacom_remote_work); INIT_WORK(&wacom->mode_change_work, wacom_mode_change_work); timer_setup(&wacom->idleprox_timer, &wacom_idleprox_timeout, TIMER_DEFERRABLE); /* ask for the report descriptor to be loaded by HID */ error = hid_parse(hdev); if (error) { hid_err(hdev, "parse failed\n"); return error; } if (features->type == BOOTLOADER) { hid_warn(hdev, "Using device in hidraw-only mode"); return hid_hw_start(hdev, HID_CONNECT_HIDRAW); } error = wacom_parse_and_register(wacom, false); if (error) return error; if (hdev->bus == BUS_BLUETOOTH) { error = device_create_file(&hdev->dev, &dev_attr_speed); if (error) hid_warn(hdev, "can't create sysfs speed attribute err: %d\n", error); } wacom_wac->probe_complete = true; return 0; } static void wacom_remove(struct hid_device *hdev) { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_wac *wacom_wac = &wacom->wacom_wac; struct wacom_features *features = &wacom_wac->features; if (features->device_type & WACOM_DEVICETYPE_WL_MONITOR) hid_hw_close(hdev); hid_hw_stop(hdev); cancel_delayed_work_sync(&wacom->init_work); cancel_work_sync(&wacom->wireless_work); cancel_work_sync(&wacom->battery_work); cancel_work_sync(&wacom->remote_work); cancel_work_sync(&wacom->mode_change_work); del_timer_sync(&wacom->idleprox_timer); if (hdev->bus == BUS_BLUETOOTH) device_remove_file(&hdev->dev, &dev_attr_speed); /* make sure we don't trigger the LEDs */ wacom_led_groups_release(wacom); if (wacom->wacom_wac.features.type != REMOTE) wacom_release_resources(wacom); } #ifdef CONFIG_PM static int wacom_resume(struct hid_device *hdev) { struct wacom *wacom = hid_get_drvdata(hdev); mutex_lock(&wacom->lock); /* switch to wacom mode first */ _wacom_query_tablet_data(wacom); wacom_led_control(wacom); mutex_unlock(&wacom->lock); return 0; } static int wacom_reset_resume(struct hid_device *hdev) { return wacom_resume(hdev); } #endif /* CONFIG_PM */ static struct hid_driver wacom_driver = { .name = "wacom", .id_table = wacom_ids, .probe = wacom_probe, .remove = wacom_remove, .report = wacom_wac_report, #ifdef CONFIG_PM .resume = wacom_resume, .reset_resume = wacom_reset_resume, #endif .raw_event = wacom_raw_event, }; module_hid_driver(wacom_driver); MODULE_VERSION(DRIVER_VERSION); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");
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