ecore-drm: Add a new API for keymap cache

Summary:
Originally, each keyboard devices could have their own keymap.
The one keyboard's keymap could different with others.
But for this, Ecore_Drm compile a new keymap when a keyboard is connected.
But this is a burden for some people who doesn't manage keymap for each keyboard.
They want to maintain only one keymap for system.
So, I added cached context/keymap and just ref/unref for each keyboard device.
People who want to different keymap for each keyboard just do not set cached
context/keymap. Then Ecore_Drm maintain keymaps about each keyboard devices.

Test Plan:
Connect a keyboard device and watch flow of ioctl.
Originally Ecore_Drm opened xkb data and compile keymap,
but after patch, that ioctl is disppeared.

@feature

Reviewers: raster, devilhorns, ManMower

Reviewed By: devilhorns, ManMower

Subscribers: cedric, input.hacker, ohduna, jpeg

Differential Revision: https://phab.enlightenment.org/D3503

1 files changed, 7 insertions, 1 deletions

diff --git a/src/lib/ecore_drm/ecore_drm_private.h b/src/lib/ecore_drm/ecore_drm_private.h
index 6d30dee56b..c3ba84c14b 100644
--- a/src/lib/ecore_drm/ecore_drm_private.h
+++ b/src/lib/ecore_drm/ecore_drm_private.h
@@ -24,7 +24,6 @@
 # include <linux/major.h>
 # include <linux/input.h>
 # include <libinput.h>
-# include <xkbcommon/xkbcommon.h>
 
 # ifdef HAVE_SYSTEMD
 #  include <systemd/sd-login.h>
@@ -69,6 +68,8 @@
 # endif
 
 extern int _ecore_drm_log_dom;
+struct xkb_keymap *cached_keymap;
+struct xkb_context *cached_context;
 
 # define EVDEV_MAX_SLOTS 32
 
@@ -294,4 +295,9 @@ Eina_Bool _ecore_drm_dbus_session_release(void);
 
 void _ecore_drm_inputs_init(void);
 void _ecore_drm_inputs_shutdown(void);
+
+struct xkb_context *_ecore_drm_device_cached_context_get(enum xkb_context_flags flags);
+struct xkb_keymap *_ecore_drm_device_cached_keymap_get(struct xkb_context *ctx,
+                       const struct xkb_rule_names *names,
+                       enum xkb_keymap_compile_flags flags);
 #endif