Input: sparse-keymap - switch to using new keycode interface
Switch sparse keymap library to use new style of getkeycode and
setkeycode methods to allow retrieving and setting keycodes not
only by their scancodes but also by index.
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/sparse-keymap.c b/drivers/input/sparse-keymap.c
index 0142483..a29a7812 100644
--- a/drivers/input/sparse-keymap.c
+++ b/drivers/input/sparse-keymap.c
@@ -22,6 +22,37 @@
MODULE_LICENSE("GPL v2");
MODULE_VERSION("0.1");
+static unsigned int sparse_keymap_get_key_index(struct input_dev *dev,
+ const struct key_entry *k)
+{
+ struct key_entry *key;
+ unsigned int idx = 0;
+
+ for (key = dev->keycode; key->type != KE_END; key++) {
+ if (key->type == KE_KEY) {
+ if (key == k)
+ break;
+ idx++;
+ }
+ }
+
+ return idx;
+}
+
+static struct key_entry *sparse_keymap_entry_by_index(struct input_dev *dev,
+ unsigned int index)
+{
+ struct key_entry *key;
+ unsigned int key_cnt = 0;
+
+ for (key = dev->keycode; key->type != KE_END; key++)
+ if (key->type == KE_KEY)
+ if (key_cnt++ == index)
+ return key;
+
+ return NULL;
+}
+
/**
* sparse_keymap_entry_from_scancode - perform sparse keymap lookup
* @dev: Input device using sparse keymap
@@ -64,16 +95,36 @@
}
EXPORT_SYMBOL(sparse_keymap_entry_from_keycode);
+static struct key_entry *sparse_keymap_locate(struct input_dev *dev,
+ const struct input_keymap_entry *ke)
+{
+ struct key_entry *key;
+ unsigned int scancode;
+
+ if (ke->flags & INPUT_KEYMAP_BY_INDEX)
+ key = sparse_keymap_entry_by_index(dev, ke->index);
+ else if (input_scancode_to_scalar(ke, &scancode) == 0)
+ key = sparse_keymap_entry_from_scancode(dev, scancode);
+ else
+ key = NULL;
+
+ return key;
+}
+
static int sparse_keymap_getkeycode(struct input_dev *dev,
- unsigned int scancode,
- unsigned int *keycode)
+ struct input_keymap_entry *ke)
{
const struct key_entry *key;
if (dev->keycode) {
- key = sparse_keymap_entry_from_scancode(dev, scancode);
+ key = sparse_keymap_locate(dev, ke);
if (key && key->type == KE_KEY) {
- *keycode = key->keycode;
+ ke->keycode = key->keycode;
+ if (!(ke->flags & INPUT_KEYMAP_BY_INDEX))
+ ke->index =
+ sparse_keymap_get_key_index(dev, key);
+ ke->len = sizeof(key->code);
+ memcpy(ke->scancode, &key->code, sizeof(key->code));
return 0;
}
}
@@ -82,20 +133,19 @@
}
static int sparse_keymap_setkeycode(struct input_dev *dev,
- unsigned int scancode,
- unsigned int keycode)
+ const struct input_keymap_entry *ke,
+ unsigned int *old_keycode)
{
struct key_entry *key;
- int old_keycode;
if (dev->keycode) {
- key = sparse_keymap_entry_from_scancode(dev, scancode);
+ key = sparse_keymap_locate(dev, ke);
if (key && key->type == KE_KEY) {
- old_keycode = key->keycode;
- key->keycode = keycode;
- set_bit(keycode, dev->keybit);
- if (!sparse_keymap_entry_from_keycode(dev, old_keycode))
- clear_bit(old_keycode, dev->keybit);
+ *old_keycode = key->keycode;
+ key->keycode = ke->keycode;
+ set_bit(ke->keycode, dev->keybit);
+ if (!sparse_keymap_entry_from_keycode(dev, *old_keycode))
+ clear_bit(*old_keycode, dev->keybit);
return 0;
}
}
@@ -159,15 +209,14 @@
dev->keycode = map;
dev->keycodemax = map_size;
- dev->getkeycode = sparse_keymap_getkeycode;
- dev->setkeycode = sparse_keymap_setkeycode;
+ dev->getkeycode_new = sparse_keymap_getkeycode;
+ dev->setkeycode_new = sparse_keymap_setkeycode;
return 0;
err_out:
kfree(map);
return error;
-
}
EXPORT_SYMBOL(sparse_keymap_setup);