diff options
Diffstat (limited to 'drivers/hid/wacom_sys.c')
| -rw-r--r-- | drivers/hid/wacom_sys.c | 1257 |
1 files changed, 1257 insertions, 0 deletions
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c new file mode 100644 index 000000000000..06e304b3bbfd --- /dev/null +++ b/drivers/hid/wacom_sys.c @@ -0,0 +1,1257 @@ +/* + * 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/hid.h> + +#define WAC_MSG_RETRIES 5 + +#define WAC_CMD_LED_CONTROL 0x20 +#define WAC_CMD_ICON_START 0x21 +#define WAC_CMD_ICON_XFER 0x23 +#define WAC_CMD_RETRIES 10 + +static int wacom_get_report(struct hid_device *hdev, u8 type, u8 id, + void *buf, size_t size, unsigned int retries) +{ + int retval; + + do { + retval = hid_hw_raw_request(hdev, id, 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 id, + void *buf, size_t size, unsigned int retries) +{ + int retval; + + do { + retval = hid_hw_raw_request(hdev, id, 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); + int retval; + + mutex_lock(&wacom->lock); + retval = hid_hw_open(wacom->hdev); + mutex_unlock(&wacom->lock); + + return retval; +} + +static void wacom_close(struct input_dev *dev) +{ + struct wacom *wacom = input_get_drvdata(dev); + + mutex_lock(&wacom->lock); + hid_hw_close(wacom->hdev); + mutex_unlock(&wacom->lock); +} + +/* + * 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; + + switch (usage->hid) { + case HID_DG_CONTACTMAX: + /* leave touch_max as is if predefined */ + if (!features->touch_max) + features->touch_max = field->value[0]; + 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 = (field->logical == HID_DG_FINGER) || + (field->physical == HID_DG_FINGER); + bool pen = (field->logical == HID_DG_STYLUS) || + (field->physical == HID_DG_STYLUS); + + /* + * 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; + + if (finger && !features->touch_max) + /* touch device at least supports one touch point */ + 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; + } +} + +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); + } +} + +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, + report_id, rep_data, length, 1); + if (error >= 0) + error = wacom_get_report(hdev, HID_FEATURE_REPORT, + report_id, rep_data, length, 1); + } while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES); + + kfree(rep_data); + + return error < 0 ? error : 0; +} + +/* + * Switch the tablet into its most-capable mode. Wacom tablets are + * typically configured to power-up in a mode which sends mouse-like + * reports to the OS. To get absolute position, pressure data, etc. + * from the tablet, it is necessary to switch the tablet out of this + * mode and into one which sends the full range of tablet data. + */ +static int wacom_query_tablet_data(struct hid_device *hdev, + struct wacom_features *features) +{ + 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->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; + +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_wac *wacom) +{ + struct wacom_hdev_data *data; + + if (wacom->shared) { + data = container_of(wacom->shared, struct wacom_hdev_data, shared); + kref_put(&data->kref, wacom_release_shared_data); + wacom->shared = NULL; + } +} + +static int wacom_led_control(struct wacom *wacom) +{ + unsigned char *buf; + int retval; + + buf = kzalloc(9, 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; + + buf[0] = WAC_CMD_LED_CONTROL; + buf[1] = (crop_lum << 4) | (ring_lum << 2) | (ring_led); + } + 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] = WAC_CMD_LED_CONTROL; + 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, + WAC_CMD_LED_CONTROL, buf, 9, WAC_CMD_RETRIES); + kfree(buf); + + return retval; +} + +static int wacom_led_putimage(struct wacom *wacom, int button_id, const void *img) +{ + unsigned char *buf; + int i, retval; + + buf = kzalloc(259, 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, + WAC_CMD_ICON_START, buf, 2, WAC_CMD_RETRIES); + if (retval < 0) + goto out; + + buf[0] = WAC_CMD_ICON_XFER; + buf[1] = button_id & 0x07; + for (i = 0; i < 4; i++) { + buf[2] = i; + memcpy(buf + 3, img + i * 256, 256); + + retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, + WAC_CMD_ICON_XFER, + buf, 259, 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, WAC_CMD_ICON_START, + 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 snprintf(buf, 2, "%d\n", wacom->led.select[SET_ID]); \ +} \ +static DEVICE_ATTR(status_led##SET_ID##_select, S_IWUSR | S_IRUSR, \ + 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 DEVICE_ATTR(name##_luminance, S_IWUSR, \ + NULL, 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; + + if (count != 1024) + return -EINVAL; + + mutex_lock(&wacom->lock); + + err = wacom_led_putimage(wacom, button_id, 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, S_IWUSR, \ + 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 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); + + return 0; +} + +static void wacom_destroy_leds(struct wacom *wacom) +{ + switch (wacom->wacom_wac.features.type) { + case INTUOS4S: + case INTUOS4: + 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_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 *wacom = container_of(psy, struct wacom, battery); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_SCOPE: + val->intval = POWER_SUPPLY_SCOPE_DEVICE; + break; + case POWER_SUPPLY_PROP_CAPACITY: + val->intval = + wacom->wacom_wac.battery_capacity * 100 / 31; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int wacom_initialize_battery(struct wacom *wacom) +{ + int error = 0; + + if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) { + wacom->battery.properties = wacom_battery_props; + wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props); + wacom->battery.get_property = wacom_battery_get_property; + wacom->battery.name = "wacom_battery"; + wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY; + wacom->battery.use_for_apm = 0; + + error = power_supply_register(&wacom->hdev->dev, + &wacom->battery); + + if (!error) + power_supply_powers(&wacom->battery, + &wacom->hdev->dev); + } + + return error; +} + +static void wacom_destroy_battery(struct wacom *wacom) +{ + if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR && + wacom->battery.dev) { + power_supply_unregister(&wacom->battery); + wacom->battery.dev = NULL; + } +} + +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 = hdev->product; + input_dev->id.version = hdev->version; + input_set_drvdata(input_dev, wacom); + + return input_dev; +} + +static void wacom_unregister_inputs(struct wacom *wacom) +{ + if (wacom->wacom_wac.input) + input_unregister_device(wacom->wacom_wac.input); + if (wacom->wacom_wac.pad_input) + input_unregister_device(wacom->wacom_wac.pad_input); + wacom->wacom_wac.input = NULL; + wacom->wacom_wac.pad_input = NULL; +} + +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_allocate_input(wacom); + pad_input_dev = wacom_allocate_input(wacom); + if (!input_dev || !pad_input_dev) { + error = -ENOMEM; + goto fail1; + } + + wacom_wac->input = input_dev; + wacom_wac->pad_input = pad_input_dev; + wacom_wac->pad_input->name = wacom_wac->pad_name; + + error = wacom_setup_input_capabilities(input_dev, wacom_wac); + if (error) + goto fail2; + + error = input_register_device(input_dev); + if (error) + goto fail2; + + 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 fail3; + } + + return 0; + +fail3: + input_unregister_device(input_dev); + input_dev = NULL; +fail2: + wacom_wac->input = NULL; + wacom_wac->pad_input = NULL; +fail1: + if (input_dev) + input_free_device(input_dev); + if (pad_input_dev) + input_free_device(pad_input_dev); + 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_unregister_inputs(wacom1); + + /* Touch interface */ + hdev2 = usb_get_intfdata(usbdev->config->interface[2]); + wacom2 = hid_get_drvdata(hdev2); + wacom_wac2 = &(wacom2->wacom_wac); + wacom_unregister_inputs(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->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; + error = 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); + error = 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_unregister_inputs(wacom1); + wacom_unregister_inputs(wacom2); + return; +} + +/* + * 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 int wacom_hid_report_len(struct hid_report *report) +{ + /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */ + return ((report->size - 1) >> 3) + 1 + (report->id > 0); +} + +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 = wacom_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; + + if (!id->driver_data) + return -EINVAL; + + 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 fail1; + } + + 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 fail1; + } + + if (features->check_for_hid_type && features->hid_type != hdev->type) { + error = -ENODEV; + goto fail1; + } + + wacom->usbdev = dev; + wacom->intf = intf; + mutex_init(&wacom->lock); + INIT_WORK(&wacom->work, wacom_wireless_work); + + /* 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; + } + + 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); + + if (features->quirks & WACOM_QUIRK_MULTI_INPUT) { + /* 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 fail1; + } + + error = wacom_initialize_leds(wacom); + if (error) + goto fail2; + + if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) { + error = wacom_register_inputs(wacom); + if (error) + goto fail3; + } + + /* Note that if query fails it is not a hard failure */ + wacom_query_tablet_data(hdev, features); + + /* Regular HID work starts now */ + error = hid_hw_start(hdev, HID_CONNECT_HIDRAW); + if (error) { + hid_err(hdev, "hw start failed\n"); + goto fail4; + } + + 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; + + fail4: wacom_unregister_inputs(wacom); + fail3: wacom_destroy_leds(wacom); + fail2: wacom_remove_shared_data(wacom_wac); + fail1: 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_unregister_inputs(wacom); + wacom_destroy_battery(wacom); + wacom_destroy_leds(wacom); + wacom_remove_shared_data(&wacom->wacom_wac); + + hid_set_drvdata(hdev, NULL); + kfree(wacom); +} + +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); +} + +static struct hid_driver wacom_driver = { + .name = "wacom", + .id_table = wacom_ids, + .probe = wacom_probe, + .remove = wacom_remove, +#ifdef CONFIG_PM + .resume = wacom_resume, + .reset_resume = wacom_reset_resume, +#endif + .raw_event = wacom_raw_event, +}; +module_hid_driver(wacom_driver); |