From 545f4e99dee7284ed57c79384c5c1d5ac58dcd59 Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Mon, 24 Nov 2008 11:44:27 -0500 Subject: Input: wacom - add support for new USB Tablet PCs Signed-off-by: Ping Cheng Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_sys.c | 228 ++++++++++++++++++++++++++++++++++----- 1 file changed, 199 insertions(+), 29 deletions(-) (limited to 'drivers/input/tablet/wacom_sys.c') diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 5fbc463baf5..7fe73586e02 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -14,8 +14,41 @@ #include "wacom.h" #include "wacom_wac.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 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 static int usb_get_report(struct usb_interface *intf, unsigned char type, unsigned char id, void *buf, int size) @@ -80,25 +113,21 @@ static void wacom_sys_irq(struct urb *urb) void wacom_report_key(void *wcombo, unsigned int key_type, int key_data) { input_report_key(get_input_dev((struct wacom_combo *)wcombo), key_type, key_data); - return; } void wacom_report_abs(void *wcombo, unsigned int abs_type, int abs_data) { input_report_abs(get_input_dev((struct wacom_combo *)wcombo), abs_type, abs_data); - return; } void wacom_report_rel(void *wcombo, unsigned int rel_type, int rel_data) { input_report_rel(get_input_dev((struct wacom_combo *)wcombo), rel_type, rel_data); - return; } void wacom_input_event(void *wcombo, unsigned int type, unsigned int code, int value) { input_event(get_input_dev((struct wacom_combo *)wcombo), type, code, value); - return; } __u16 wacom_be16_to_cpu(unsigned char *data) @@ -118,7 +147,6 @@ __u16 wacom_le16_to_cpu(unsigned char *data) void wacom_input_sync(void *wcombo) { input_sync(get_input_dev((struct wacom_combo *)wcombo)); - return; } static int wacom_open(struct input_dev *dev) @@ -160,7 +188,7 @@ static void wacom_close(struct input_dev *dev) void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac) { - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_1) | + input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_1) | BIT_MASK(BTN_5); input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0); } @@ -170,7 +198,7 @@ void input_dev_g4(struct input_dev *input_dev, struct wacom_wac *wacom_wac) input_dev->evbit[0] |= BIT_MASK(EV_MSC); input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL); input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER); - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) | + input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) | BIT_MASK(BTN_4); } @@ -178,7 +206,7 @@ void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac) { input_dev->evbit[0] |= BIT_MASK(EV_REL); input_dev->relbit[0] |= BIT_MASK(REL_WHEEL); - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) | + input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE); input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) | BIT_MASK(BTN_TOOL_MOUSE) | BIT_MASK(BTN_STYLUS2); @@ -188,7 +216,7 @@ void input_dev_g(struct input_dev *input_dev, struct wacom_wac *wacom_wac) void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac) { input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_FINGER); - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) | + input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_0) | BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3); input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0); input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0); @@ -196,14 +224,14 @@ void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac) void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac) { - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_4) | + input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_4) | BIT_MASK(BTN_5) | BIT_MASK(BTN_6) | BIT_MASK(BTN_7); input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0); } void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac) { - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9); + input_dev->keybit[BIT_WORD(BTN_MISC)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9); } void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac) @@ -211,7 +239,7 @@ void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac) input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL); input_dev->mscbit[0] |= BIT_MASK(MSC_SERIAL); input_dev->relbit[0] |= BIT_MASK(REL_WHEEL); - input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) | + input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA); input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER) | @@ -228,8 +256,7 @@ void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac) void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac) { - input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_STYLUS2) | - BIT_MASK(BTN_TOOL_RUBBER); + input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_STYLUS2); } void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac) @@ -237,15 +264,129 @@ void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac) input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_RUBBER); } +static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hid_desc, + struct wacom_wac *wacom_wac) +{ + struct usb_device *dev = interface_to_usbdev(intf); + struct wacom_features *features = wacom_wac->features; + char limit = 0, 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++ < 5); + + 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->touch_x_max = + features->touch_y_max = + wacom_le16_to_cpu(&report[i + 3]); + features->x_max = + wacom_le16_to_cpu(&report[i + 6]); + i += 7; + } else if (pen) { + features->x_max = + wacom_le16_to_cpu(&report[i + 3]); + i += 4; + } + } else if (usage == WCM_DIGITIZER) { + /* max pressure isn't reported + features->pressure_max = (unsigned short) + (report[i+4] << 8 | report[i + 3]); + */ + features->pressure_max = 255; + i += 4; + } + break; + + case HID_USAGE_Y: + if (usage == WCM_DESKTOP) + features->y_max = + wacom_le16_to_cpu(&report[i + 3]); + i += 4; + break; + + case HID_USAGE_FINGER: + finger = 1; + i++; + break; + + case HID_USAGE_STYLUS: + pen = 1; + i++; + break; + + case HID_USAGE_UNDEFINED: + if (usage == WCM_DESKTOP && finger) /* capacity */ + features->pressure_max = + wacom_le16_to_cpu(&report[i + 3]); + i += 4; + break; + } + break; + + case HID_COLLECTION: + /* reset UsagePage ans Finger */ + finger = usage = 0; + break; + } + } + + result = 0; + + out: + kfree(report); + return result; +} + static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(intf); + struct usb_host_interface *interface = intf->cur_altsetting; struct usb_endpoint_descriptor *endpoint; struct wacom *wacom; struct wacom_wac *wacom_wac; + struct wacom_features *features; struct input_dev *input_dev; int error = -ENOMEM; char rep_data[2], limit = 0; + struct hid_descriptor *hid_desc; wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); wacom_wac = kzalloc(sizeof(struct wacom_wac), GFP_KERNEL); @@ -268,8 +409,8 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i usb_make_path(dev, wacom->phys, sizeof(wacom->phys)); strlcat(wacom->phys, "/input0", sizeof(wacom->phys)); - wacom_wac->features = get_wacom_feature(id); - BUG_ON(wacom_wac->features->pktlen > 10); + wacom_wac->features = features = get_wacom_feature(id); + BUG_ON(features->pktlen > 10); input_dev->name = wacom_wac->features->name; wacom->wacom_wac = wacom_wac; @@ -282,18 +423,37 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i input_dev->open = wacom_open; input_dev->close = wacom_close; + endpoint = &intf->cur_altsetting->endpoint[0].desc; + + /* TabletPC need to retrieve the physical and logical maximum from report descriptor */ + if (wacom_wac->features->type == TABLETPC) { + 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 retrive extra class descriptor\n"); + goto fail2; + } + } + error = wacom_parse_hid(intf, hid_desc, wacom_wac); + if (error) + goto fail2; + } + input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH) | BIT_MASK(BTN_STYLUS); - input_set_abs_params(input_dev, ABS_X, 0, wacom_wac->features->x_max, 4, 0); - input_set_abs_params(input_dev, ABS_Y, 0, wacom_wac->features->y_max, 4, 0); - input_set_abs_params(input_dev, ABS_PRESSURE, 0, wacom_wac->features->pressure_max, 0, 0); + input_set_abs_params(input_dev, ABS_X, 0, features->x_max, 4, 0); + input_set_abs_params(input_dev, ABS_Y, 0, features->y_max, 4, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, 0, features->pressure_max, 0, 0); + if (features->type == TABLETPC) { + input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_DOUBLETAP); + input_set_abs_params(input_dev, ABS_RX, 0, features->touch_x_max, 4, 0); + input_set_abs_params(input_dev, ABS_RY, 0, features->touch_y_max, 4, 0); + } input_dev->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC); wacom_init_input_dev(input_dev, wacom_wac); - endpoint = &intf->cur_altsetting->endpoint[0].desc; - usb_fill_int_urb(wacom->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress), wacom_wac->data, wacom_wac->features->pktlen, @@ -305,13 +465,22 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i if (error) goto fail3; - /* Ask the tablet to report tablet data. Repeat until it succeeds */ - do { - rep_data[0] = 2; - rep_data[1] = 2; - usb_set_report(intf, 3, 2, rep_data, 2); - usb_get_report(intf, 3, 2, rep_data, 2); - } while (rep_data[1] != 2 && limit++ < 5); + /* + * Ask the tablet to report tablet data if it is not a Tablet PC. + * Repeat until it succeeds + */ + if (wacom_wac->features->type != TABLETPC) { + do { + rep_data[0] = 2; + rep_data[1] = 2; + error = usb_set_report(intf, WAC_HID_FEATURE_REPORT, + 2, rep_data, 2); + if (error >= 0) + error = usb_get_report(intf, + WAC_HID_FEATURE_REPORT, 2, + rep_data, 2); + } while ((error < 0 || rep_data[1] != 2) && limit++ < 5); + } usb_set_intfdata(intf, wacom); return 0; @@ -333,7 +502,8 @@ static void wacom_disconnect(struct usb_interface *intf) usb_kill_urb(wacom->irq); input_unregister_device(wacom->dev); usb_free_urb(wacom->irq); - usb_buffer_free(interface_to_usbdev(intf), 10, wacom->wacom_wac->data, wacom->data_dma); + usb_buffer_free(interface_to_usbdev(intf), 10, + wacom->wacom_wac->data, wacom->data_dma); kfree(wacom->wacom_wac); kfree(wacom); } -- cgit v1.2.3