HID: separate hid-input event quirks from generic code

This patch separates also the hid-input quirks that have to be
applied at the time the event occurs, so that the generic code
handling HUT-compliant devices is not messed up by them too much.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

3 files changed, 71 insertions, 59 deletions

diff --git a/drivers/hid/hid-input-quirks.c b/drivers/hid/hid-input-quirks.c
index e05e9ad5522e..7f2f80b00d74 100644
--- a/drivers/hid/hid-input-quirks.c
+++ b/drivers/hid/hid-input-quirks.c
@@ -322,5 +322,68 @@ int hidinput_mapping_quirks(struct hid_usage *usage,
         }
         return 0;
 }
-EXPORT_SYMBOL_GPL(hidinput_mapping_quirks);
+
+#define IS_MS_KB(x) (x->vendor == 0x045e && (x->product == 0x00db || x->product == 0x00f9))
+
+void hidinput_event_quirks(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
+{
+        struct input_dev *input;
+        unsigned *quirks = &hid->quirks;
+
+        input = field->hidinput->input;
+
+        if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
+                || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
+                if (value) hid->quirks |=  HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
+                else       hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
+                return;
+        }
+
+        if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_B8) &&
+                        (usage->type == EV_REL) &&
+                        (usage->code == REL_WHEEL)) {
+                hid->delayed_value = value;
+                return;
+        }
+
+        if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_B8) &&
+                        (usage->hid == 0x000100b8)) {
+                input_event(input, EV_REL, value ? REL_HWHEEL : REL_WHEEL, hid->delayed_value);
+                return;
+        }
+
+        if ((hid->quirks & HID_QUIRK_INVERT_HWHEEL) && (usage->code == REL_HWHEEL)) {
+                input_event(input, usage->type, usage->code, -value);
+                return;
+        }
+
+        if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
+                input_event(input, usage->type, REL_HWHEEL, value);
+                return;
+        }
+
+        if ((hid->quirks & HID_QUIRK_APPLE_HAS_FN) && hidinput_apple_event(hid, input, usage, value))
+                return;
+
+        /* Handling MS keyboards special buttons */
+        if (IS_MS_KB(hid) && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
+                int key = 0;
+                static int last_key = 0;
+                switch (value) {
+                        case 0x01: key = KEY_F14; break;
+                        case 0x02: key = KEY_F15; break;
+                        case 0x04: key = KEY_F16; break;
+                        case 0x08: key = KEY_F17; break;
+                        case 0x10: key = KEY_F18; break;
+                        default: break;
+                }
+                if (key) {
+                        input_event(input, usage->type, key, 1);
+                        last_key = key;
+                } else {
+                        input_event(input, usage->type, last_key, 0);
+                }
+        }
+}
+
 
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 3d448037c82f..aeb018e31bfc 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -86,11 +86,6 @@ static const struct {
 #define map_abs_clear(c)        do { map_abs(c); clear_bit(c, bit); } while (0)
 #define map_key_clear(c)        do { map_key(c); clear_bit(c, bit); } while (0)
 
-/* hardware needing special handling due to colliding MSVENDOR page usages */
-#define IS_CHICONY_TACTICAL_PAD(x) (x->vendor == 0x04f2 && device->product == 0x0418)
-#define IS_MS_KB(x) (x->vendor == 0x045e && (x->product == 0x00db || x->product == 0x00f9))
-#define IS_MS_PRESENTER_8000(x) (x->vendor == 0x045e && x->product == 0x0713)
-
 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
 
 struct hidinput_key_translation {
@@ -177,7 +172,7 @@ static struct hidinput_key_translation *find_translation(struct hidinput_key_tra
         return NULL;
 }
 
-static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
+int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
                 struct hid_usage *usage, __s32 value)
 {
         struct hidinput_key_translation *trans;
@@ -269,7 +264,7 @@ static void hidinput_apple_setup(struct input_dev *input)
 
 }
 #else
-static inline int hidinput_apple_event(struct hid_device *hid,
+inline int hidinput_apple_event(struct hid_device *hid,
                                        struct input_dev *input,
                                        struct hid_usage *usage, __s32 value)
 {
@@ -386,6 +381,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                 goto ignore;
         }
 
+        /* handle input mappings for quirky devices */
         ret = hidinput_mapping_quirks(usage, input, bit, &max);
         if (ret)
                 goto mapped;
@@ -857,38 +853,8 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
         if (!usage->type)
                 return;
 
-        if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
-                || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
-                if (value) hid->quirks |=  HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
-                else       hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
-                return;
-        }
-
-        if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_B8) &&
-                        (usage->type == EV_REL) &&
-                        (usage->code == REL_WHEEL)) {
-                hid->delayed_value = value;
-                return;
-        }
-
-        if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_B8) &&
-                        (usage->hid == 0x000100b8)) {
-                input_event(input, EV_REL, value ? REL_HWHEEL : REL_WHEEL, hid->delayed_value);
-                return;
-        }
-
-        if ((hid->quirks & HID_QUIRK_INVERT_HWHEEL) && (usage->code == REL_HWHEEL)) {
-                input_event(input, usage->type, usage->code, -value);
-                return;
-        }
-
-        if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
-                input_event(input, usage->type, REL_HWHEEL, value);
-                return;
-        }
-
-        if ((hid->quirks & HID_QUIRK_APPLE_HAS_FN) && hidinput_apple_event(hid, input, usage, value))
-                return;
+        /* handle input events for quirky devices */
+        hidinput_event_quirks(hid, field, usage, value);
 
         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
                 int hat_dir = usage->hat_dir;
@@ -949,25 +915,6 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
                 return;
         }
 
-        /* Handling MS keyboards special buttons */
-        if (IS_MS_KB(hid) && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
-                int key = 0;
-                static int last_key = 0;
-                switch (value) {
-                        case 0x01: key = KEY_F14; break;
-                        case 0x02: key = KEY_F15; break;
-                        case 0x04: key = KEY_F16; break;
-                        case 0x08: key = KEY_F17; break;
-                        case 0x10: key = KEY_F18; break;
-                        default: break;
-                }
-                if (key) {
-                        input_event(input, usage->type, key, 1);
-                        last_key = key;
-                } else {
-                        input_event(input, usage->type, last_key, 0);
-                }
-        }
         /* report the usage code as scancode if the key status has changed */
         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
diff --git a/include/linux/hid.h b/include/linux/hid.h
index cd5d562b1b7c..dca5804836f3 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -525,6 +525,8 @@ int hid_set_field(struct hid_field *, unsigned, __s32);
 int hid_input_report(struct hid_device *, int type, u8 *, int, int);
 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 int hidinput_mapping_quirks(struct hid_usage *, struct input_dev *, unsigned long *, int *);
+void hidinput_event_quirks(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
+int hidinput_apple_event(struct hid_device *, struct input_dev *, struct hid_usage *, __s32);
 void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt);
 void hid_output_report(struct hid_report *report, __u8 *data);
 void hid_free_device(struct hid_device *device);