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Subject[PATCH 01/15] Input - wacom: include and use linux/hid.h
Date
The current wacom code redefines constants that are already in linux/hid.h
This patch includes the official implementation and use it accross the code.

There is a conflict with HID_USAGE and others at the same level:
- in the wacom.ko implementation, those are the #define regarding the
value of the field in the report descriptor
- in the hid.h, those are bitmask
So add HDESC_ in their current definition.

Also, the struct hid_descriptor slightly differs from the linux/hid.h
point of view, so mark it as custom for this driver.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
drivers/input/tablet/wacom_sys.c | 53 +++++++++++++++++-----------------------
1 file changed, 22 insertions(+), 31 deletions(-)

diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 598efd4..e0c1cb2 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -13,28 +13,19 @@

#include "wacom_wac.h"
#include "wacom.h"
+#include <linux/hid.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 ((HID_USAGE_PAGE_DESKTOP << 16) | 0x30)
-#define HID_USAGE_Y ((HID_USAGE_PAGE_DESKTOP << 16) | 0x31)
-#define HID_USAGE_PRESSURE ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x30)
-#define HID_USAGE_X_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3d)
-#define HID_USAGE_Y_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3e)
-#define HID_USAGE_FINGER ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x22)
-#define HID_USAGE_STYLUS ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x20)
-#define HID_USAGE_CONTACTMAX ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x55)
-#define HID_COLLECTION 0xa1
-#define HID_COLLECTION_LOGICAL 0x02
-#define HID_COLLECTION_END 0xc0
-
-struct hid_descriptor {
+#define HID_HDESC_USAGE_UNDEFINED 0x00
+#define HID_HDESC_USAGE_PAGE 0x05
+#define HID_HDESC_USAGE 0x09
+#define HID_HDESC_COLLECTION 0xa1
+#define HID_HDESC_COLLECTION_LOGICAL 0x02
+#define HID_HDESC_COLLECTION_END 0xc0
+
+struct wac_hid_descriptor {
struct usb_descriptor_header header;
__le16 bcdHID;
u8 bCountryCode;
@@ -301,7 +292,7 @@ static void wacom_retrieve_report_data(struct usb_interface *intf,
* this after returning from this function.
*/
static int wacom_parse_hid(struct usb_interface *intf,
- struct hid_descriptor *hid_desc,
+ struct wac_hid_descriptor *hid_desc,
struct wacom_features *features)
{
struct usb_device *dev = interface_to_usbdev(intf);
@@ -334,14 +325,14 @@ static int wacom_parse_hid(struct usb_interface *intf,
for (i = 0; i < hid_desc->wDescriptorLength; i++) {

switch (report[i]) {
- case HID_USAGE_PAGE:
+ case HID_HDESC_USAGE_PAGE:
page = report[i + 1];
i++;
break;

- case HID_USAGE:
+ case HID_HDESC_USAGE:
switch (page << 16 | report[i + 1]) {
- case HID_USAGE_X:
+ case HID_GD_X:
if (finger) {
features->device_type = BTN_TOOL_FINGER;
/* touch device at least supports one touch point */
@@ -420,7 +411,7 @@ static int wacom_parse_hid(struct usb_interface *intf,
}
break;

- case HID_USAGE_Y:
+ case HID_GD_Y:
if (finger) {
switch (features->type) {
case TABLETPC2FG:
@@ -472,7 +463,7 @@ static int wacom_parse_hid(struct usb_interface *intf,
}
break;

- case HID_USAGE_FINGER:
+ case HID_DG_FINGER:
finger = 1;
i++;
break;
@@ -482,19 +473,19 @@ static int wacom_parse_hid(struct usb_interface *intf,
* X/Y values and some cases of invalid Digitizer X/Y
* values commonly reported.
*/
- case HID_USAGE_STYLUS:
+ case HID_DG_STYLUS:
pen = 1;
i++;
break;

- case HID_USAGE_CONTACTMAX:
+ case HID_DG_CONTACTMAX:
/* leave touch_max as is if predefined */
if (!features->touch_max)
wacom_retrieve_report_data(intf, features);
i++;
break;

- case HID_USAGE_PRESSURE:
+ case HID_DG_TIPPRESSURE:
if (pen) {
features->pressure_max =
get_unaligned_le16(&report[i + 3]);
@@ -504,15 +495,15 @@ static int wacom_parse_hid(struct usb_interface *intf,
}
break;

- case HID_COLLECTION_END:
+ case HID_HDESC_COLLECTION_END:
/* reset UsagePage and Finger */
finger = page = 0;
break;

- case HID_COLLECTION:
+ case HID_HDESC_COLLECTION:
i++;
switch (report[i]) {
- case HID_COLLECTION_LOGICAL:
+ case HID_HDESC_COLLECTION_LOGICAL:
i += wacom_parse_logical_collection(&report[i],
features);
break;
@@ -585,7 +576,7 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
{
int error = 0;
struct usb_host_interface *interface = intf->cur_altsetting;
- struct hid_descriptor *hid_desc;
+ struct wac_hid_descriptor *hid_desc;

/* default features */
features->device_type = BTN_TOOL_PEN;
--
2.0.0


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