--- /dev/null
+/*
+ * drivers/input/tablet/wacom_sys.c
+ *
+ * USB Wacom tablet support - system specific code
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include "wacom_wac.h"
+#include "wacom.h"
+#include <linux/input/mt.h>
+
+#define WAC_MSG_RETRIES 5
+
+#define WAC_CMD_WL_LED_CONTROL 0x03
+#define WAC_CMD_LED_CONTROL 0x20
+#define WAC_CMD_ICON_START 0x21
+#define WAC_CMD_ICON_XFER 0x23
+#define WAC_CMD_ICON_BT_XFER 0x26
+#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)
+
+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 == -EPIPE) && --retries);
+
+ 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 == -EPIPE) && --retries);
+
+ return retval;
+}
+
+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 (size > WACOM_PKGLEN_MAX)
+ 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);
+
+ 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_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;
+ u8 *data;
+ int ret;
+
+ switch (usage->hid) {
+ case HID_DG_CONTACTMAX:
+ /* leave touch_max as is if predefined */
+ if (!features->touch_max) {
+ /* read manually */
+ data = kzalloc(2, GFP_KERNEL);
+ if (!data)
+ break;
+ data[0] = field->report->id;
+ ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
+ data, 2, 0);
+ if (ret == 2)
+ features->touch_max = data[1];
+ 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;
+ }
+}
+
+/*
+ * 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);
+
+ /*
+ * Requiring Stylus Usage will ignore boot mouse
+ * X/Y values and some cases of invalid Digitizer X/Y
+ * values commonly reported.
+ */
+ if (!pen && !finger)
+ return;
+
+ /*
+ * Bamboo models do not support HID_DG_CONTACTMAX.
+ * And, Bamboo Pen only descriptor contains touch.
+ */
+ if (features->type != BAMBOO_PT) {
+ /* ISDv4 touch devices at least supports one touch point */
+ if (finger && !features->touch_max)
+ features->touch_max = 1;
+ }
+
+ switch (usage->hid) {
+ case HID_GD_X:
+ features->x_max = field->logical_maximum;
+ if (finger) {
+ features->device_type = BTN_TOOL_FINGER;
+ features->x_phy = field->physical_maximum;
+ if (features->type != BAMBOO_PT) {
+ features->unit = field->unit;
+ features->unitExpo = field->unit_exponent;
+ }
+ } else {
+ features->device_type = BTN_TOOL_PEN;
+ }
+ 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->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 (features->touch_max > 1) {
+ input_mt_init_slots(wacom_wac->input, wacom_wac->features.touch_max,
+ INPUT_MT_DIRECT);
+ }
+ }
+}
+
+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, int report_id,
+ int length, int mode)
+{
+ unsigned char *rep_data;
+ int error = -ENOMEM, limit = 0;
+
+ rep_data = kzalloc(length, GFP_KERNEL);
+ if (!rep_data)
+ return error;
+
+ do {
+ rep_data[0] = report_id;
+ rep_data[1] = mode;
+
+ 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] != mode) && 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 hid_device *hdev,
+ struct wacom_features *features)
+{
+ if (hdev->bus == BUS_BLUETOOTH)
+ return wacom_bt_query_tablet_data(hdev, 1, features);
+
+ if (features->type == HID_GENERIC)
+ return wacom_hid_set_device_mode(hdev);
+
+ if (features->device_type == BTN_TOOL_FINGER) {
+ if (features->type > TABLETPC) {
+ /* MT Tablet PC touch */
+ return wacom_set_device_mode(hdev, 3, 4, 4);
+ }
+ else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
+ return wacom_set_device_mode(hdev, 18, 3, 2);
+ }
+ else if (features->type == WACOM_27QHDT) {
+ return wacom_set_device_mode(hdev, 131, 3, 2);
+ }
+ else if (features->type == BAMBOO_PAD) {
+ return wacom_set_device_mode(hdev, 2, 2, 2);
+ }
+ } else if (features->device_type == BTN_TOOL_PEN) {
+ if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
+ return wacom_set_device_mode(hdev, 2, 2, 2);
+ }
+ }
+
+ 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->device_type = BTN_TOOL_PEN;
+ features->x_fuzz = 4;
+ features->y_fuzz = 4;
+ features->pressure_fuzz = 0;
+ features->distance_fuzz = 0;
+
+ /*
+ * 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) {
+ if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
+ features->device_type = 0;
+ } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
+ features->device_type = BTN_TOOL_FINGER;
+ features->pktlen = WACOM_PKGLEN_BBTOUCH3;
+ }
+ }
+
+ /* only devices that support touch need to retrieve the info */
+ if (features->type < BAMBOO_PT)
+ 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;
+ int vid = features->oVid;
+ int pid = features->oPid;
+ int n1,n2;
+
+ if (vid == 0 && pid == 0) {
+ vid = hdev->vendor;
+ pid = hdev->product;
+ }
+
+ if (vid != sibling->vendor || pid != sibling->product)
+ return false;
+
+ /* Compare the physical path. */
+ n1 = strrchr(hdev->phys, '.') - hdev->phys;
+ n2 = strrchr(sibling->phys, '.') - sibling->phys;
+ if (n1 != n2 || n1 <= 0 || n2 <= 0)
+ return false;
+
+ return !strncmp(hdev->phys, sibling->phys, n1);
+}
+
+static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
+{
+ struct wacom_hdev_data *data;
+
+ 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 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) {
+ retval = -ENOMEM;
+ goto out;
+ }
+
+ kref_init(&data->kref);
+ data->dev = hdev;
+ list_add_tail(&data->list, &wacom_udev_list);
+ }
+
+ wacom_wac->shared = &data->shared;
+
+ if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
+ wacom_wac->shared->touch = hdev;
+ else if (wacom_wac->features.device_type == BTN_TOOL_PEN)
+ wacom_wac->shared->pen = hdev;
+
+out:
+ mutex_unlock(&wacom_udev_list_lock);
+ return retval;
+}
+
+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(struct wacom *wacom)
+{
+ 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_led_control(struct wacom *wacom)
+{
+ unsigned char *buf;
+ int retval;
+ unsigned char report_id = WAC_CMD_LED_CONTROL;
+ int buf_size = 9;
+
+ if (wacom->wacom_wac.pid) { /* wireless connected */
+ report_id = WAC_CMD_WL_LED_CONTROL;
+ buf_size = 13;
+ }
+ buf = kzalloc(buf_size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ 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.select[0] & 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 {
+ int led = wacom->led.select[0] | 0x4;
+
+ if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
+ wacom->wacom_wac.features.type == WACOM_24HD)
+ led |= (wacom->led.select[1] << 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 = container_of(dev, struct 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.select[set_id] = 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 = container_of(dev, struct hid_device, dev);\
+ struct wacom *wacom = hid_get_drvdata(hdev); \
+ return scnprintf(buf, PAGE_SIZE, "%d\n", \
+ wacom->led.select[SET_ID]); \
+} \
+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 = container_of(dev, struct 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 = container_of(dev, struct 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 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 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 struct attribute_group intuos5_led_attr_group = {
+ .name = "wacom_led",
+ .attrs = intuos5_led_attrs,
+};
+
+static int wacom_initialize_leds(struct wacom *wacom)
+{
+ int error;
+
+ /* Initialize default values */
+ switch (wacom->wacom_wac.features.type) {
+ case INTUOS4S:
+ case INTUOS4:
+ case INTUOS4WL:
+ case INTUOS4L:
+ wacom->led.select[0] = 0;
+ wacom->led.select[1] = 0;
+ wacom->led.llv = 10;
+ wacom->led.hlv = 20;
+ wacom->led.img_lum = 10;
+ error = sysfs_create_group(&wacom->hdev->dev.kobj,
+ &intuos4_led_attr_group);
+ break;
+
+ case WACOM_24HD:
+ case WACOM_21UX2:
+ wacom->led.select[0] = 0;
+ wacom->led.select[1] = 0;
+ wacom->led.llv = 0;
+ wacom->led.hlv = 0;
+ wacom->led.img_lum = 0;
+
+ error = sysfs_create_group(&wacom->hdev->dev.kobj,
+ &cintiq_led_attr_group);
+ break;
+
+ case INTUOS5S:
+ case INTUOS5:
+ case INTUOS5L:
+ case INTUOSPS:
+ case INTUOSPM:
+ case INTUOSPL:
+ if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
+ wacom->led.select[0] = 0;
+ wacom->led.select[1] = 0;
+ wacom->led.llv = 32;
+ wacom->led.hlv = 0;
+ wacom->led.img_lum = 0;
+
+ error = sysfs_create_group(&wacom->hdev->dev.kobj,
+ &intuos5_led_attr_group);
+ } else
+ return 0;
+ break;
+
+ default:
+ return 0;
+ }
+
+ if (error) {
+ hid_err(wacom->hdev,
+ "cannot create sysfs group err: %d\n", error);
+ return error;
+ }
+ wacom_led_control(wacom);
+ wacom->led_initialized = true;
+
+ return 0;
+}
+
+static void wacom_destroy_leds(struct wacom *wacom)
+{
+ if (!wacom->led_initialized)
+ return;
+
+ wacom->led_initialized = false;
+
+ switch (wacom->wacom_wac.features.type) {
+ case INTUOS4S:
+ case INTUOS4:
+ case INTUOS4WL:
+ case INTUOS4L:
+ sysfs_remove_group(&wacom->hdev->dev.kobj,
+ &intuos4_led_attr_group);
+ break;
+
+ case WACOM_24HD:
+ case WACOM_21UX2:
+ sysfs_remove_group(&wacom->hdev->dev.kobj,
+ &cintiq_led_attr_group);
+ break;
+
+ case INTUOS5S:
+ case INTUOS5:
+ case INTUOS5L:
+ case INTUOSPS:
+ case INTUOSPM:
+ case INTUOSPL:
+ if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
+ sysfs_remove_group(&wacom->hdev->dev.kobj,
+ &intuos5_led_attr_group);
+ break;
+ }
+}
+
+static enum power_supply_property wacom_battery_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_SCOPE,
+ POWER_SUPPLY_PROP_CAPACITY
+};
+
+static enum power_supply_property wacom_ac_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_SCOPE,
+};
+
+static int wacom_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wacom *wacom = power_supply_get_drvdata(psy);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = wacom->wacom_wac.bat_connected;
+ break;
+ case POWER_SUPPLY_PROP_SCOPE:
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval =
+ wacom->wacom_wac.battery_capacity;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ if (wacom->wacom_wac.bat_charging)
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (wacom->wacom_wac.battery_capacity == 100 &&
+ wacom->wacom_wac.ps_connected)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else if (wacom->wacom_wac.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_ac_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wacom *wacom = power_supply_get_drvdata(psy);
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ /* fall through */
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = wacom->wacom_wac.ps_connected;
+ break;
+ case POWER_SUPPLY_PROP_SCOPE:
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int wacom_initialize_battery(struct wacom *wacom)
+{
+ static atomic_t battery_no = ATOMIC_INIT(0);
+ struct power_supply_config psy_cfg = { .drv_data = wacom, };
+ unsigned long n;
+
+ if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
+ struct power_supply_desc *bat_desc = &wacom->battery_desc;
+ struct power_supply_desc *ac_desc = &wacom->ac_desc;
+ 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(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
+ bat_desc->name = wacom->wacom_wac.bat_name;
+ bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
+ bat_desc->use_for_apm = 0;
+
+ ac_desc->properties = wacom_ac_props;
+ ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
+ ac_desc->get_property = wacom_ac_get_property;
+ sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
+ ac_desc->name = wacom->wacom_wac.ac_name;
+ ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
+ ac_desc->use_for_apm = 0;
+
+ wacom->battery = power_supply_register(&wacom->hdev->dev,
+ &wacom->battery_desc, &psy_cfg);
+ if (IS_ERR(wacom->battery))
+ return PTR_ERR(wacom->battery);
+
+ power_supply_powers(wacom->battery, &wacom->hdev->dev);
+
+ wacom->ac = power_supply_register(&wacom->hdev->dev,
+ &wacom->ac_desc,
+ &psy_cfg);
+ if (IS_ERR(wacom->ac)) {
+ power_supply_unregister(wacom->battery);
+ return PTR_ERR(wacom->ac);
+ }
+
+ power_supply_powers(wacom->ac, &wacom->hdev->dev);
+ }
+
+ return 0;
+}
+
+static void wacom_destroy_battery(struct wacom *wacom)
+{
+ if (wacom->battery) {
+ power_supply_unregister(wacom->battery);
+ wacom->battery = NULL;
+ power_supply_unregister(wacom->ac);
+ wacom->ac = NULL;
+ }
+}
+
+static ssize_t wacom_show_speed(struct device *dev,
+ struct device_attribute
+ *attr, char *buf)
+{
+ struct hid_device *hdev = container_of(dev, struct hid_device, dev);
+ struct wacom *wacom = hid_get_drvdata(hdev);
+
+ return snprintf(buf, PAGE_SIZE, "%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 = container_of(dev, struct 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 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 = input_allocate_device();
+ if (!input_dev)
+ return NULL;
+
+ input_dev->name = wacom_wac->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 void wacom_free_inputs(struct wacom *wacom)
+{
+ struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
+
+ if (wacom_wac->input)
+ input_free_device(wacom_wac->input);
+ if (wacom_wac->pad_input)
+ input_free_device(wacom_wac->pad_input);
+ wacom_wac->input = NULL;
+ wacom_wac->pad_input = NULL;
+}
+
+static int wacom_allocate_inputs(struct wacom *wacom)
+{
+ struct input_dev *input_dev, *pad_input_dev;
+ struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
+
+ input_dev = wacom_allocate_input(wacom);
+ pad_input_dev = wacom_allocate_input(wacom);
+ if (!input_dev || !pad_input_dev) {
+ wacom_free_inputs(wacom);
+ return -ENOMEM;
+ }
+
+ wacom_wac->input = input_dev;
+ wacom_wac->pad_input = pad_input_dev;
+ wacom_wac->pad_input->name = wacom_wac->pad_name;
+
+ return 0;
+}
+
+static void wacom_clean_inputs(struct wacom *wacom)
+{
+ if (wacom->wacom_wac.input) {
+ if (wacom->wacom_wac.input_registered)
+ input_unregister_device(wacom->wacom_wac.input);
+ else
+ input_free_device(wacom->wacom_wac.input);
+ }
+ if (wacom->wacom_wac.pad_input) {
+ if (wacom->wacom_wac.pad_registered)
+ input_unregister_device(wacom->wacom_wac.pad_input);
+ else
+ input_free_device(wacom->wacom_wac.pad_input);
+ }
+ wacom->wacom_wac.input = NULL;
+ wacom->wacom_wac.pad_input = NULL;
+ wacom_destroy_leds(wacom);
+}
+
+static int wacom_register_inputs(struct wacom *wacom)
+{
+ struct input_dev *input_dev, *pad_input_dev;
+ struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
+ int error;
+
+ input_dev = wacom_wac->input;
+ pad_input_dev = wacom_wac->pad_input;
+
+ if (!input_dev || !pad_input_dev)
+ return -EINVAL;
+
+ error = wacom_setup_pentouch_input_capabilities(input_dev, wacom_wac);
+ if (!error) {
+ error = input_register_device(input_dev);
+ if (error)
+ return error;
+ wacom_wac->input_registered = true;
+ }
+
+ error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
+ if (error) {
+ /* no pad in use on 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_register_pad_input;
+ wacom_wac->pad_registered = true;
+
+ error = wacom_initialize_leds(wacom);
+ if (error)
+ goto fail_leds;
+ }
+
+ return 0;
+
+fail_leds:
+ input_unregister_device(pad_input_dev);
+ pad_input_dev = NULL;
+ wacom_wac->pad_registered = false;
+fail_register_pad_input:
+ input_unregister_device(input_dev);
+ wacom_wac->input = NULL;
+ wacom_wac->input_registered = false;
+ return error;
+}
+
+static void wacom_wireless_work(struct work_struct *work)
+{
+ struct wacom *wacom = container_of(work, struct wacom, 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);
+
+ /* Stylus interface */
+ hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
+ wacom1 = hid_get_drvdata(hdev1);
+ wacom_wac1 = &(wacom1->wacom_wac);
+ wacom_clean_inputs(wacom1);
+
+ /* Touch interface */
+ hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
+ wacom2 = hid_get_drvdata(hdev2);
+ wacom_wac2 = &(wacom2->wacom_wac);
+ wacom_clean_inputs(wacom2);
+
+ if (wacom_wac->pid == 0) {
+ hid_info(wacom->hdev, "wireless tablet disconnected\n");
+ wacom_wac1->shared->type = 0;
+ } 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->features.device_type = BTN_TOOL_PEN;
+ snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
+ wacom_wac1->features.name);
+ snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
+ wacom_wac1->features.name);
+ wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
+ wacom_wac1->shared->type = wacom_wac1->features.type;
+ wacom_wac1->pid = wacom_wac->pid;
+ error = wacom_allocate_inputs(wacom1) ||
+ wacom_register_inputs(wacom1);
+ if (error)
+ goto fail;
+
+ /* Touch interface */
+ if (wacom_wac1->features.touch_max ||
+ wacom_wac1->features.type == INTUOSHT) {
+ wacom_wac2->features =
+ *((struct wacom_features *)id->driver_data);
+ wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
+ wacom_wac2->features.device_type = BTN_TOOL_FINGER;
+ wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
+ if (wacom_wac2->features.touch_max)
+ snprintf(wacom_wac2->name, WACOM_NAME_MAX,
+ "%s (WL) Finger",wacom_wac2->features.name);
+ else
+ snprintf(wacom_wac2->name, WACOM_NAME_MAX,
+ "%s (WL) Pad",wacom_wac2->features.name);
+ snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
+ "%s (WL) Pad", wacom_wac2->features.name);
+ wacom_wac2->pid = wacom_wac->pid;
+ error = wacom_allocate_inputs(wacom2) ||
+ wacom_register_inputs(wacom2);
+ if (error)
+ goto fail;
+
+ if (wacom_wac1->features.type == INTUOSHT &&
+ wacom_wac1->features.touch_max)
+ wacom_wac->shared->touch_input = wacom_wac2->input;
+ }
+
+ error = wacom_initialize_battery(wacom);
+ if (error)
+ goto fail;
+ }
+
+ return;
+
+fail:
+ wacom_clean_inputs(wacom1);
+ wacom_clean_inputs(wacom2);
+ return;
+}
+
+void wacom_battery_work(struct work_struct *work)
+{
+ struct wacom *wacom = container_of(work, struct wacom, work);
+
+ if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
+ !wacom->battery) {
+ wacom_initialize_battery(wacom);
+ }
+ else if (!(wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
+ wacom->battery) {
+ wacom_destroy_battery(wacom);
+ }
+}
+
+/*
+ * 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)
+{
+ 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);
+}
+
+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 int wacom_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct wacom *wacom;
+ struct wacom_wac *wacom_wac;
+ struct wacom_features *features;
+ int error;
+ unsigned int connect_mask = HID_CONNECT_HIDRAW;
+
+ 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 = kzalloc(sizeof(struct wacom), GFP_KERNEL);
+ if (!wacom)
+ return -ENOMEM;
+
+ hid_set_drvdata(hdev, wacom);
+ wacom->hdev = hdev;
+
+ /* ask for the report descriptor to be loaded by HID */
+ error = hid_parse(hdev);
+ if (error) {
+ hid_err(hdev, "parse failed\n");
+ goto fail_parse;
+ }
+
+ wacom_wac = &wacom->wacom_wac;
+ wacom_wac->features = *((struct wacom_features *)id->driver_data);
+ features = &wacom_wac->features;
+ features->pktlen = wacom_compute_pktlen(hdev);
+ if (features->pktlen > WACOM_PKGLEN_MAX) {
+ error = -EINVAL;
+ goto fail_pktlen;
+ }
+
+ if (features->check_for_hid_type && features->hid_type != hdev->type) {
+ error = -ENODEV;
+ goto fail_type;
+ }
+
+ wacom->usbdev = dev;
+ wacom->intf = intf;
+ mutex_init(&wacom->lock);
+ INIT_WORK(&wacom->work, wacom_wireless_work);
+
+ if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
+ error = wacom_allocate_inputs(wacom);
+ if (error)
+ goto fail_allocate_inputs;
+ }
+
+ /*
+ * 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_shared_data;
+ }
+ }
+
+ /* 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);
+
+ /*
+ * Intuos5 has no useful data about its touch interface in its
+ * HID descriptor. If this is the touch interface (PacketSize
+ * of WACOM_PKGLEN_BBTOUCH3), override the table values.
+ */
+ if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
+ if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
+ features->device_type = BTN_TOOL_FINGER;
+
+ features->x_max = 4096;
+ features->y_max = 4096;
+ } else {
+ features->device_type = BTN_TOOL_PEN;
+ }
+ }
+
+ /*
+ * Same thing for Bamboo 3rd gen.
+ */
+ if ((features->type == BAMBOO_PT) &&
+ (features->pktlen == WACOM_PKGLEN_BBTOUCH3) &&
+ (features->device_type == BTN_TOOL_PEN)) {
+ features->device_type = BTN_TOOL_FINGER;
+
+ features->x_max = 4096;
+ features->y_max = 4096;
+ }
+
+ /*
+ * Same thing for Bamboo PAD
+ */
+ if (features->type == BAMBOO_PAD)
+ features->device_type = BTN_TOOL_FINGER;
+
+ if (hdev->bus == BUS_BLUETOOTH)
+ features->quirks |= WACOM_QUIRK_BATTERY;
+
+ wacom_setup_device_quirks(features);
+
+ /* set unit to "100th of a mm" for devices not reported by HID */
+ if (!features->unit) {
+ features->unit = 0x11;
+ features->unitExpo = -3;
+ }
+ wacom_calculate_res(features);
+
+ strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
+ snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
+ "%s Pad", features->name);
+
+ /* Append the device type to the name */
+ if (features->device_type != BTN_TOOL_FINGER)
+ strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
+ else if (features->touch_max)
+ strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
+ else
+ strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
+
+ error = wacom_add_shared_data(hdev);
+ if (error)
+ goto fail_shared_data;
+
+ if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
+ (features->quirks & WACOM_QUIRK_BATTERY)) {
+ error = wacom_initialize_battery(wacom);
+ if (error)
+ goto fail_battery;
+ }
+
+ if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
+ error = wacom_register_inputs(wacom);
+ if (error)
+ goto fail_register_inputs;
+ }
+
+ 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);
+ }
+
+ 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_hw_start;
+ }
+
+ /* Note that if query fails it is not a hard failure */
+ wacom_query_tablet_data(hdev, features);
+
+ if (features->quirks & WACOM_QUIRK_MONITOR)
+ error = hid_hw_open(hdev);
+
+ if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
+ if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
+ wacom_wac->shared->touch_input = wacom_wac->input;
+ }
+
+ return 0;
+
+fail_hw_start:
+ if (hdev->bus == BUS_BLUETOOTH)
+ device_remove_file(&hdev->dev, &dev_attr_speed);
+fail_register_inputs:
+ wacom_clean_inputs(wacom);
+ wacom_destroy_battery(wacom);
+fail_battery:
+ wacom_remove_shared_data(wacom);
+fail_shared_data:
+ wacom_clean_inputs(wacom);
+fail_allocate_inputs:
+fail_type:
+fail_pktlen:
+fail_parse:
+ kfree(wacom);
+ hid_set_drvdata(hdev, NULL);
+ return error;
+}
+
+static void wacom_remove(struct hid_device *hdev)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+
+ hid_hw_stop(hdev);
+
+ cancel_work_sync(&wacom->work);
+ wacom_clean_inputs(wacom);
+ if (hdev->bus == BUS_BLUETOOTH)
+ device_remove_file(&hdev->dev, &dev_attr_speed);
+ wacom_destroy_battery(wacom);
+ wacom_remove_shared_data(wacom);
+
+ hid_set_drvdata(hdev, NULL);
+ kfree(wacom);
+}
+
+#ifdef CONFIG_PM
+static int wacom_resume(struct hid_device *hdev)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_features *features = &wacom->wacom_wac.features;
+
+ mutex_lock(&wacom->lock);
+
+ /* switch to wacom mode first */
+ wacom_query_tablet_data(hdev, features);
+ 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,
+ .event = wacom_wac_event,
+ .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(DRIVER_LICENSE);
Code Review / kvmfornfv.git / blobdiff