diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/tablet/wacom_sys.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/tablet/wacom_sys.c | 1168 |
1 files changed, 1168 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/drivers/input/tablet/wacom_sys.c b/ANDROID_3.4.5/drivers/input/tablet/wacom_sys.c new file mode 100644 index 00000000..0d269212 --- /dev/null +++ b/ANDROID_3.4.5/drivers/input/tablet/wacom_sys.c @@ -0,0 +1,1168 @@ +/* + * 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" + +/* defines to get HID report descriptor */ +#define HID_DEVICET_HID (USB_TYPE_CLASS | 0x01) +#define HID_DEVICET_REPORT (USB_TYPE_CLASS | 0x02) +#define HID_USAGE_UNDEFINED 0x00 +#define HID_USAGE_PAGE 0x05 +#define HID_USAGE_PAGE_DIGITIZER 0x0d +#define HID_USAGE_PAGE_DESKTOP 0x01 +#define HID_USAGE 0x09 +#define HID_USAGE_X 0x30 +#define HID_USAGE_Y 0x31 +#define HID_USAGE_X_TILT 0x3d +#define HID_USAGE_Y_TILT 0x3e +#define HID_USAGE_FINGER 0x22 +#define HID_USAGE_STYLUS 0x20 +#define HID_COLLECTION 0xa1 +#define HID_COLLECTION_LOGICAL 0x02 +#define HID_COLLECTION_END 0xc0 + +enum { + WCM_UNDEFINED = 0, + WCM_DESKTOP, + WCM_DIGITIZER, +}; + +struct hid_descriptor { + struct usb_descriptor_header header; + __le16 bcdHID; + u8 bCountryCode; + u8 bNumDescriptors; + u8 bDescriptorType; + __le16 wDescriptorLength; +} __attribute__ ((packed)); + +/* defines to get/set USB message */ +#define USB_REQ_GET_REPORT 0x01 +#define USB_REQ_SET_REPORT 0x09 + +#define WAC_HID_FEATURE_REPORT 0x03 +#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 usb_interface *intf, u8 type, u8 id, + void *buf, size_t size, unsigned int retries) +{ + struct usb_device *dev = interface_to_usbdev(intf); + int retval; + + do { + retval = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), + USB_REQ_GET_REPORT, + USB_DIR_IN | USB_TYPE_CLASS | + USB_RECIP_INTERFACE, + (type << 8) + id, + intf->altsetting[0].desc.bInterfaceNumber, + buf, size, 100); + } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries); + + return retval; +} + +static int wacom_set_report(struct usb_interface *intf, u8 type, u8 id, + void *buf, size_t size, unsigned int retries) +{ + struct usb_device *dev = interface_to_usbdev(intf); + int retval; + + do { + retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), + USB_REQ_SET_REPORT, + USB_TYPE_CLASS | USB_RECIP_INTERFACE, + (type << 8) + id, + intf->altsetting[0].desc.bInterfaceNumber, + buf, size, 1000); + } while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries); + + return retval; +} + +static void wacom_sys_irq(struct urb *urb) +{ + struct wacom *wacom = urb->context; + int retval; + + switch (urb->status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", __func__, urb->status); + return; + default: + dbg("%s - nonzero urb status received: %d", __func__, urb->status); + goto exit; + } + + wacom_wac_irq(&wacom->wacom_wac, urb->actual_length); + + exit: + usb_mark_last_busy(wacom->usbdev); + retval = usb_submit_urb(urb, GFP_ATOMIC); + if (retval) + err ("%s - usb_submit_urb failed with result %d", + __func__, retval); +} + +static int wacom_open(struct input_dev *dev) +{ + struct wacom *wacom = input_get_drvdata(dev); + int retval = 0; + + if (usb_autopm_get_interface(wacom->intf) < 0) + return -EIO; + + mutex_lock(&wacom->lock); + + if (usb_submit_urb(wacom->irq, GFP_KERNEL)) { + retval = -EIO; + goto out; + } + + wacom->open = true; + wacom->intf->needs_remote_wakeup = 1; + +out: + mutex_unlock(&wacom->lock); + usb_autopm_put_interface(wacom->intf); + return retval; +} + +static void wacom_close(struct input_dev *dev) +{ + struct wacom *wacom = input_get_drvdata(dev); + int autopm_error; + + autopm_error = usb_autopm_get_interface(wacom->intf); + + mutex_lock(&wacom->lock); + usb_kill_urb(wacom->irq); + wacom->open = false; + wacom->intf->needs_remote_wakeup = 0; + mutex_unlock(&wacom->lock); + + if (!autopm_error) + usb_autopm_put_interface(wacom->intf); +} + +/* + * Static values for max X/Y and resolution of Pen interface is stored in + * features. This mean physical size of active area can be computed. + * This is useful to do when Pen and Touch have same active area of tablet. + * This means for Touch device, we only need to find max X/Y value and we + * have enough information to compute resolution of touch. + */ +static void wacom_set_phy_from_res(struct wacom_features *features) +{ + features->x_phy = (features->x_max * 100) / features->x_resolution; + features->y_phy = (features->y_max * 100) / features->y_resolution; +} + +static int wacom_parse_logical_collection(unsigned char *report, + struct wacom_features *features) +{ + int length = 0; + + if (features->type == BAMBOO_PT) { + + /* Logical collection is only used by 3rd gen Bamboo Touch */ + features->pktlen = WACOM_PKGLEN_BBTOUCH3; + features->device_type = BTN_TOOL_FINGER; + + wacom_set_phy_from_res(features); + + features->x_max = features->y_max = + get_unaligned_le16(&report[10]); + + length = 11; + } + return length; +} + +/* + * 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. + * + * 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical + * Collection. Instead they define a Logical Collection with a single + * Logical Maximum for both X and Y. + */ +static int wacom_parse_hid(struct usb_interface *intf, + struct hid_descriptor *hid_desc, + struct wacom_features *features) +{ + struct usb_device *dev = interface_to_usbdev(intf); + char limit = 0; + /* result has to be defined as int for some devices */ + int result = 0; + int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0; + unsigned char *report; + + report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL); + if (!report) + return -ENOMEM; + + /* retrive report descriptors */ + do { + result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), + USB_REQ_GET_DESCRIPTOR, + USB_RECIP_INTERFACE | USB_DIR_IN, + HID_DEVICET_REPORT << 8, + intf->altsetting[0].desc.bInterfaceNumber, /* interface */ + report, + hid_desc->wDescriptorLength, + 5000); /* 5 secs */ + } while (result < 0 && limit++ < WAC_MSG_RETRIES); + + /* No need to parse the Descriptor. It isn't an error though */ + if (result < 0) + goto out; + + for (i = 0; i < hid_desc->wDescriptorLength; i++) { + + switch (report[i]) { + case HID_USAGE_PAGE: + switch (report[i + 1]) { + case HID_USAGE_PAGE_DIGITIZER: + usage = WCM_DIGITIZER; + i++; + break; + + case HID_USAGE_PAGE_DESKTOP: + usage = WCM_DESKTOP; + i++; + break; + } + break; + + case HID_USAGE: + switch (report[i + 1]) { + case HID_USAGE_X: + if (usage == WCM_DESKTOP) { + if (finger) { + features->device_type = BTN_TOOL_FINGER; + if (features->type == TABLETPC2FG) { + /* need to reset back */ + features->pktlen = WACOM_PKGLEN_TPC2FG; + } + if (features->type == BAMBOO_PT) { + /* need to reset back */ + features->pktlen = WACOM_PKGLEN_BBTOUCH; + features->x_phy = + get_unaligned_le16(&report[i + 5]); + features->x_max = + get_unaligned_le16(&report[i + 8]); + i += 15; + } else { + features->x_max = + get_unaligned_le16(&report[i + 3]); + features->x_phy = + get_unaligned_le16(&report[i + 6]); + features->unit = report[i + 9]; + features->unitExpo = report[i + 11]; + i += 12; + } + } else if (pen) { + /* penabled only accepts exact bytes of data */ + if (features->type == TABLETPC2FG) + features->pktlen = WACOM_PKGLEN_GRAPHIRE; + features->device_type = BTN_TOOL_PEN; + features->x_max = + get_unaligned_le16(&report[i + 3]); + i += 4; + } + } + break; + + case HID_USAGE_Y: + if (usage == WCM_DESKTOP) { + if (finger) { + features->device_type = BTN_TOOL_FINGER; + if (features->type == TABLETPC2FG) { + /* need to reset back */ + features->pktlen = WACOM_PKGLEN_TPC2FG; + features->y_max = + get_unaligned_le16(&report[i + 3]); + features->y_phy = + get_unaligned_le16(&report[i + 6]); + i += 7; + } else if (features->type == BAMBOO_PT) { + /* need to reset back */ + features->pktlen = WACOM_PKGLEN_BBTOUCH; + features->y_phy = + get_unaligned_le16(&report[i + 3]); + features->y_max = + get_unaligned_le16(&report[i + 6]); + i += 12; + } else { + features->y_max = + features->x_max; + features->y_phy = + get_unaligned_le16(&report[i + 3]); + i += 4; + } + } else if (pen) { + /* penabled only accepts exact bytes of data */ + if (features->type == TABLETPC2FG) + features->pktlen = WACOM_PKGLEN_GRAPHIRE; + features->device_type = BTN_TOOL_PEN; + features->y_max = + get_unaligned_le16(&report[i + 3]); + i += 4; + } + } + break; + + case HID_USAGE_FINGER: + finger = 1; + i++; + break; + + /* + * Requiring Stylus Usage will ignore boot mouse + * X/Y values and some cases of invalid Digitizer X/Y + * values commonly reported. + */ + case HID_USAGE_STYLUS: + pen = 1; + i++; + break; + } + break; + + case HID_COLLECTION_END: + /* reset UsagePage and Finger */ + finger = usage = 0; + break; + + case HID_COLLECTION: + i++; + switch (report[i]) { + case HID_COLLECTION_LOGICAL: + i += wacom_parse_logical_collection(&report[i], + features); + break; + } + break; + } + } + + out: + result = 0; + kfree(report); + return result; +} + +static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_features *features) +{ + unsigned char *rep_data; + int limit = 0, report_id = 2; + int error = -ENOMEM; + + rep_data = kmalloc(4, GFP_KERNEL); + if (!rep_data) + return error; + + /* ask to report tablet data if it is MT Tablet PC or + * not a Tablet PC */ + if (features->type == TABLETPC2FG) { + do { + rep_data[0] = 3; + rep_data[1] = 4; + rep_data[2] = 0; + rep_data[3] = 0; + report_id = 3; + error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, + report_id, rep_data, 4, 1); + if (error >= 0) + error = wacom_get_report(intf, + WAC_HID_FEATURE_REPORT, + report_id, rep_data, 4, 1); + } while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES); + } else if (features->type != TABLETPC && + features->type != WIRELESS && + features->device_type == BTN_TOOL_PEN) { + do { + rep_data[0] = 2; + rep_data[1] = 2; + error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT, + report_id, rep_data, 2, 1); + if (error >= 0) + error = wacom_get_report(intf, + WAC_HID_FEATURE_REPORT, + report_id, rep_data, 2, 1); + } while ((error < 0 || rep_data[1] != 2) && limit++ < WAC_MSG_RETRIES); + } + + kfree(rep_data); + + return error < 0 ? error : 0; +} + +static int wacom_retrieve_hid_descriptor(struct usb_interface *intf, + struct wacom_features *features) +{ + int error = 0; + struct usb_host_interface *interface = intf->cur_altsetting; + struct hid_descriptor *hid_desc; + + /* 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_DOUBLETAP; + features->pktlen = WACOM_PKGLEN_BBTOUCH3; + } + } + + /* only Tablet PCs and Bamboo P&T need to retrieve the info */ + if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) && + (features->type != BAMBOO_PT)) + goto out; + + if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) { + if (usb_get_extra_descriptor(&interface->endpoint[0], + HID_DEVICET_REPORT, &hid_desc)) { + printk("wacom: can not retrieve extra class descriptor\n"); + error = 1; + goto out; + } + } + error = wacom_parse_hid(intf, hid_desc, features); + if (error) + goto out; + + out: + return error; +} + +struct wacom_usbdev_data { + struct list_head list; + struct kref kref; + struct usb_device *dev; + struct wacom_shared shared; +}; + +static LIST_HEAD(wacom_udev_list); +static DEFINE_MUTEX(wacom_udev_list_lock); + +static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev) +{ + struct wacom_usbdev_data *data; + + list_for_each_entry(data, &wacom_udev_list, list) { + if (data->dev == dev) { + kref_get(&data->kref); + return data; + } + } + + return NULL; +} + +static int wacom_add_shared_data(struct wacom_wac *wacom, + struct usb_device *dev) +{ + struct wacom_usbdev_data *data; + int retval = 0; + + mutex_lock(&wacom_udev_list_lock); + + data = wacom_get_usbdev_data(dev); + if (!data) { + data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL); + if (!data) { + retval = -ENOMEM; + goto out; + } + + kref_init(&data->kref); + data->dev = dev; + list_add_tail(&data->list, &wacom_udev_list); + } + + wacom->shared = &data->shared; + +out: + mutex_unlock(&wacom_udev_list_lock); + return retval; +} + +static void wacom_release_shared_data(struct kref *kref) +{ + struct wacom_usbdev_data *data = + container_of(kref, struct wacom_usbdev_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_usbdev_data *data; + + if (wacom->shared) { + data = container_of(wacom->shared, struct wacom_usbdev_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, led = 0; + + buf = kzalloc(9, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (wacom->wacom_wac.features.type == WACOM_21UX2 || + wacom->wacom_wac.features.type == WACOM_24HD) + led = (wacom->led.select[1] << 4) | 0x40; + + led |= wacom->led.select[0] | 0x4; + + 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->intf, 0x03, 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->intf, 0x03, 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->intf, 0x03, 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->intf, 0x03, 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 wacom *wacom = dev_get_drvdata(dev); + 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 wacom *wacom = dev_get_drvdata(dev); \ + 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 wacom *wacom = dev_get_drvdata(dev); \ + \ + 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 wacom *wacom = dev_get_drvdata(dev); + 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 int wacom_initialize_leds(struct wacom *wacom) +{ + int error; + + /* Initialize default values */ + switch (wacom->wacom_wac.features.type) { + 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->intf->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->intf->dev.kobj, + &cintiq_led_attr_group); + break; + + default: + return 0; + } + + if (error) { + dev_err(&wacom->intf->dev, + "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 INTUOS4: + case INTUOS4L: + sysfs_remove_group(&wacom->intf->dev.kobj, + &intuos4_led_attr_group); + break; + + case WACOM_24HD: + case WACOM_21UX2: + sysfs_remove_group(&wacom->intf->dev.kobj, + &cintiq_led_attr_group); + break; + } +} + +static enum power_supply_property wacom_battery_props[] = { + 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_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->usbdev->dev, + &wacom->battery); + } + + return error; +} + +static void wacom_destroy_battery(struct wacom *wacom) +{ + if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) + power_supply_unregister(&wacom->battery); +} + +static int wacom_register_input(struct wacom *wacom) +{ + struct input_dev *input_dev; + struct usb_interface *intf = wacom->intf; + struct usb_device *dev = interface_to_usbdev(intf); + struct wacom_wac *wacom_wac = &(wacom->wacom_wac); + int error; + + input_dev = input_allocate_device(); + if (!input_dev) + return -ENOMEM; + + input_dev->name = wacom_wac->name; + input_dev->dev.parent = &intf->dev; + input_dev->open = wacom_open; + input_dev->close = wacom_close; + usb_to_input_id(dev, &input_dev->id); + input_set_drvdata(input_dev, wacom); + + wacom_wac->input = input_dev; + wacom_setup_input_capabilities(input_dev, wacom_wac); + + error = input_register_device(input_dev); + if (error) { + input_free_device(input_dev); + wacom_wac->input = NULL; + } + + 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; + + /* + * Regardless if this is a disconnect or a new tablet, + * remove any existing input devices. + */ + + /* Stylus interface */ + wacom = usb_get_intfdata(usbdev->config->interface[1]); + if (wacom->wacom_wac.input) + input_unregister_device(wacom->wacom_wac.input); + wacom->wacom_wac.input = 0; + + /* Touch interface */ + wacom = usb_get_intfdata(usbdev->config->interface[2]); + if (wacom->wacom_wac.input) + input_unregister_device(wacom->wacom_wac.input); + wacom->wacom_wac.input = 0; + + if (wacom_wac->pid == 0) { + printk(KERN_INFO "wacom: wireless tablet disconnected\n"); + } else { + const struct usb_device_id *id = wacom_ids; + + printk(KERN_INFO + "wacom: wireless tablet connected with PID %x\n", + wacom_wac->pid); + + while (id->match_flags) { + if (id->idVendor == USB_VENDOR_ID_WACOM && + id->idProduct == wacom_wac->pid) + break; + id++; + } + + if (!id->match_flags) { + printk(KERN_INFO + "wacom: ignorning unknown PID.\n"); + return; + } + + /* Stylus interface */ + wacom = usb_get_intfdata(usbdev->config->interface[1]); + wacom_wac = &wacom->wacom_wac; + wacom_wac->features = + *((struct wacom_features *)id->driver_info); + wacom_wac->features.device_type = BTN_TOOL_PEN; + wacom_register_input(wacom); + + /* Touch interface */ + wacom = usb_get_intfdata(usbdev->config->interface[2]); + wacom_wac = &wacom->wacom_wac; + wacom_wac->features = + *((struct wacom_features *)id->driver_info); + wacom_wac->features.pktlen = WACOM_PKGLEN_BBTOUCH3; + wacom_wac->features.device_type = BTN_TOOL_FINGER; + wacom_set_phy_from_res(&wacom_wac->features); + wacom_wac->features.x_max = wacom_wac->features.y_max = 4096; + wacom_register_input(wacom); + } +} + +static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct usb_endpoint_descriptor *endpoint; + struct wacom *wacom; + struct wacom_wac *wacom_wac; + struct wacom_features *features; + int error; + + if (!id->driver_info) + return -EINVAL; + + wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); + if (!wacom) + return -ENOMEM; + + wacom_wac = &wacom->wacom_wac; + wacom_wac->features = *((struct wacom_features *)id->driver_info); + features = &wacom_wac->features; + if (features->pktlen > WACOM_PKGLEN_MAX) { + error = -EINVAL; + goto fail1; + } + + wacom_wac->data = usb_alloc_coherent(dev, WACOM_PKGLEN_MAX, + GFP_KERNEL, &wacom->data_dma); + if (!wacom_wac->data) { + error = -ENOMEM; + goto fail1; + } + + wacom->irq = usb_alloc_urb(0, GFP_KERNEL); + if (!wacom->irq) { + error = -ENOMEM; + goto fail2; + } + + wacom->usbdev = dev; + wacom->intf = intf; + mutex_init(&wacom->lock); + INIT_WORK(&wacom->work, wacom_wireless_work); + usb_make_path(dev, wacom->phys, sizeof(wacom->phys)); + strlcat(wacom->phys, "/input0", sizeof(wacom->phys)); + + endpoint = &intf->cur_altsetting->endpoint[0].desc; + + /* Retrieve the physical and logical size for OEM devices */ + error = wacom_retrieve_hid_descriptor(intf, features); + if (error) + goto fail3; + + wacom_setup_device_quirks(features); + + strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name)); + + if (features->quirks & WACOM_QUIRK_MULTI_INPUT) { + /* Append the device type to the name */ + strlcat(wacom_wac->name, + features->device_type == BTN_TOOL_PEN ? + " Pen" : " Finger", + sizeof(wacom_wac->name)); + + error = wacom_add_shared_data(wacom_wac, dev); + if (error) + goto fail3; + } + + usb_fill_int_urb(wacom->irq, dev, + usb_rcvintpipe(dev, endpoint->bEndpointAddress), + wacom_wac->data, features->pktlen, + wacom_sys_irq, wacom, endpoint->bInterval); + wacom->irq->transfer_dma = wacom->data_dma; + wacom->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + + error = wacom_initialize_leds(wacom); + if (error) + goto fail4; + + error = wacom_initialize_battery(wacom); + if (error) + goto fail5; + + if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) { + error = wacom_register_input(wacom); + if (error) + goto fail6; + } + + /* Note that if query fails it is not a hard failure */ + wacom_query_tablet_data(intf, features); + + usb_set_intfdata(intf, wacom); + + if (features->quirks & WACOM_QUIRK_MONITOR) { + if (usb_submit_urb(wacom->irq, GFP_KERNEL)) + goto fail5; + } + + return 0; + + fail6: wacom_destroy_battery(wacom); + fail5: wacom_destroy_leds(wacom); + fail4: wacom_remove_shared_data(wacom_wac); + fail3: usb_free_urb(wacom->irq); + fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma); + fail1: kfree(wacom); + return error; +} + +static void wacom_disconnect(struct usb_interface *intf) +{ + struct wacom *wacom = usb_get_intfdata(intf); + + usb_set_intfdata(intf, NULL); + + usb_kill_urb(wacom->irq); + cancel_work_sync(&wacom->work); + if (wacom->wacom_wac.input) + input_unregister_device(wacom->wacom_wac.input); + wacom_destroy_battery(wacom); + wacom_destroy_leds(wacom); + usb_free_urb(wacom->irq); + usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX, + wacom->wacom_wac.data, wacom->data_dma); + wacom_remove_shared_data(&wacom->wacom_wac); + kfree(wacom); +} + +static int wacom_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct wacom *wacom = usb_get_intfdata(intf); + + mutex_lock(&wacom->lock); + usb_kill_urb(wacom->irq); + mutex_unlock(&wacom->lock); + + return 0; +} + +static int wacom_resume(struct usb_interface *intf) +{ + struct wacom *wacom = usb_get_intfdata(intf); + struct wacom_features *features = &wacom->wacom_wac.features; + int rv = 0; + + mutex_lock(&wacom->lock); + + /* switch to wacom mode first */ + wacom_query_tablet_data(intf, features); + wacom_led_control(wacom); + + if ((wacom->open || features->quirks & WACOM_QUIRK_MONITOR) + && usb_submit_urb(wacom->irq, GFP_NOIO) < 0) + rv = -EIO; + + mutex_unlock(&wacom->lock); + + return rv; +} + +static int wacom_reset_resume(struct usb_interface *intf) +{ + return wacom_resume(intf); +} + +static struct usb_driver wacom_driver = { + .name = "wacom", + .id_table = wacom_ids, + .probe = wacom_probe, + .disconnect = wacom_disconnect, + .suspend = wacom_suspend, + .resume = wacom_resume, + .reset_resume = wacom_reset_resume, + .supports_autosuspend = 1, +}; + +module_usb_driver(wacom_driver); |