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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2010-09-09 21:54:22 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-09-09 22:01:07 -0700
commit67127f3061cc486572a50990a1fd919ddde48c40 (patch)
treec4d712c1966bb651f7a61f6983288a1992fba21c /drivers/input/sparse-keymap.c
parentInput: add support for large scancodes (diff)
downloadlinux-dev-67127f3061cc486572a50990a1fd919ddde48c40.tar.xz
linux-dev-67127f3061cc486572a50990a1fd919ddde48c40.zip
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>
Diffstat (limited to 'drivers/input/sparse-keymap.c')
-rw-r--r--drivers/input/sparse-keymap.c81
1 files changed, 65 insertions, 16 deletions
diff --git a/drivers/input/sparse-keymap.c b/drivers/input/sparse-keymap.c
index 014248344763..a29a7812bd46 100644
--- a/drivers/input/sparse-keymap.c
+++ b/drivers/input/sparse-keymap.c
@@ -22,6 +22,37 @@ MODULE_DESCRIPTION("Generic support for sparse keymaps");
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 @@ struct key_entry *sparse_keymap_entry_from_keycode(struct input_dev *dev,
}
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_getkeycode(struct input_dev *dev,
}
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 @@ int sparse_keymap_setup(struct input_dev *dev,
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);