From cb4342c52f0ae7ad8b02a3ca60714dbaa0df77e1 Mon Sep 17 00:00:00 2001
From: JengHyun Kang <jhyuni.kang@samsung.com>
Date: Tue, 30 May 2017 12:49:33 +0900
Subject: [PATCH] ecore_drm: add a new api to rotate touch

 - API: ecore_drm_device_touch_rotation_set()

Change-Id: I91a2c9214958dad90260f17b8e387ddee4201318
---
 src/lib/ecore_drm/Ecore_Drm.h         |  3 ++
 src/lib/ecore_drm/ecore_drm_device.c  | 67 +++++++++++++++++++++++++++++++++++
 src/lib/ecore_drm/ecore_drm_evdev.c   | 21 +++++++++++
 src/lib/ecore_drm/ecore_drm_private.h | 10 ++++++
 4 files changed, 101 insertions(+)

diff --git a/src/lib/ecore_drm/Ecore_Drm.h b/src/lib/ecore_drm/Ecore_Drm.h
index 0871483..ac530a2 100644
--- a/src/lib/ecore_drm/Ecore_Drm.h
+++ b/src/lib/ecore_drm/Ecore_Drm.h
@@ -1087,6 +1087,7 @@ EAPI Eina_Bool ecore_drm_evdev_key_remap_enable(Ecore_Drm_Evdev *edev, Eina_Bool
 EAPI Eina_Bool ecore_drm_evdev_key_remap_set(Ecore_Drm_Evdev *edev, int *from_keys, int *to_keys, int num);
 EAPI int ecore_drm_evdev_wheel_click_angle_get(Ecore_Drm_Evdev *dev);
 EAPI Ecore_Device *ecore_drm_evdev_get_ecore_device(const char *path, Ecore_Device_Class clas);
+EAPI Eina_Bool ecore_drm_evdev_touch_calibration_set(Ecore_Drm_Evdev *edev, float matrix[6]);
 
 typedef void (*Ecore_Drm_VBlank_Cb)(void *data);
 EAPI Eina_Bool  ecore_drm_output_wait_vblank(Ecore_Drm_Output *output, int interval, Ecore_Drm_VBlank_Cb func, void *data);
@@ -1105,6 +1106,8 @@ EAPI Eina_Bool ecore_drm_display_fb_hal_buffer_create(Ecore_Drm_Fb *fb);
 EAPI void ecore_drm_display_fb_hal_buffer_destroy(Ecore_Drm_Fb *fb);
 
 EAPI Eina_Bool ecore_drm_device_pointer_rotation_set(Ecore_Drm_Device *dev, int rotation);
+EAPI Eina_Bool ecore_drm_evdev_device_rotate_set(Ecore_Drm_Device *dev, unsigned int rotation);
+EAPI Eina_Bool ecore_drm_device_touch_rotation_set(Ecore_Drm_Device *dev, unsigned int rotation);
 
 # ifdef __cplusplus
 }
diff --git a/src/lib/ecore_drm/ecore_drm_device.c b/src/lib/ecore_drm/ecore_drm_device.c
index ef83e1f..fbda7bb 100644
--- a/src/lib/ecore_drm/ecore_drm_device.c
+++ b/src/lib/ecore_drm/ecore_drm_device.c
@@ -899,3 +899,70 @@ ecore_drm_device_pointer_rotation_set(Ecore_Drm_Device *dev, int rotation)
      }
    return EINA_TRUE;
 }
+
+EAPI Eina_Bool
+ecore_drm_device_touch_rotation_set(Ecore_Drm_Device *dev, unsigned int rotation)
+{
+   Ecore_Drm_Seat *seat = NULL;
+   Ecore_Drm_Evdev *edev = NULL;
+   Eina_List *l = NULL, *l2 = NULL;
+   float matrix[6] = {0, };
+   float w = 0.0, h = 0.0;
+   Eina_Bool res = EINA_TRUE;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(dev, EINA_FALSE);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(dev->seats, EINA_FALSE);
+
+   EINA_LIST_FOREACH(dev->seats, l, seat)
+     {
+        EINA_LIST_FOREACH(ecore_drm_seat_evdev_list_get(seat), l2, edev)
+          {
+             if (edev->seat_caps & EVDEV_SEAT_TOUCH)
+               {
+                  w = (float)edev->output->current_mode->width;
+                  h = (float)edev->output->current_mode->height;
+                  if (w == 0.0) w = 1.0;
+                  if (h == 0.0) h = 1.0;
+
+                  switch (rotation)
+                    {
+                       case 90:
+                         matrix[1] = -h/w;
+                         matrix[2] = h/w;
+                         matrix[3] = w/h;
+                         break;
+                       case 180:
+                         matrix[0] = -1.0;
+                         matrix[2] = 1.0;
+                         matrix[4] = -1.0;
+                         matrix[5] = 1.0;
+                         break;
+                       case 270:
+                         matrix[1] = h/w;
+                         matrix[3] = -w/h;
+                         matrix[5] = w/h;
+                         break;
+                       case 0:
+                         matrix[0] = 1.0;
+                         matrix[4] = 1.0;
+                         break;
+                       default:
+                         WRN("Please input valid angle(%d)\n", rotation);
+                         return;
+                    }
+
+                  if (!ecore_drm_evdev_touch_calibration_set(edev, matrix))
+                    {
+                       res = EINA_FALSE;
+                    }
+                  else
+                    {
+                       edev->touch.transform.rotation = rotation;
+                    }
+               }
+          }
+     }
+
+   return res;
+}
+
diff --git a/src/lib/ecore_drm/ecore_drm_evdev.c b/src/lib/ecore_drm/ecore_drm_evdev.c
index b6da4c4..47a26a6 100644
--- a/src/lib/ecore_drm/ecore_drm_evdev.c
+++ b/src/lib/ecore_drm/ecore_drm_evdev.c
@@ -1279,3 +1279,24 @@ ecore_drm_evdev_wheel_click_angle_get(Ecore_Drm_Evdev *dev)
    EINA_SAFETY_ON_NULL_RETURN_VAL(dev, -1);
    return libinput_device_config_scroll_get_wheel_click_angle(dev->device);
 }
+
+EAPI Eina_Bool
+ecore_drm_evdev_touch_calibration_set(Ecore_Drm_Evdev *edev, float matrix[6])
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(edev, EINA_FALSE);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(edev->device, EINA_FALSE);
+
+   if (!libinput_device_config_calibration_has_matrix(edev->device) ||
+       !libinput_device_has_capability(edev->device, LIBINPUT_DEVICE_CAP_TOUCH))
+     return EINA_FALSE;
+
+   if (libinput_device_config_calibration_set_matrix(edev->device, matrix) !=
+       LIBINPUT_CONFIG_STATUS_SUCCESS)
+     {
+        WRN("Failed to set input transformation about device: %s\n",
+            libinput_device_get_name(edev->device));
+        return EINA_FALSE;
+     }
+
+   return EINA_TRUE;
+}
diff --git a/src/lib/ecore_drm/ecore_drm_private.h b/src/lib/ecore_drm/ecore_drm_private.h
index ab18bf7..bfc35e9 100644
--- a/src/lib/ecore_drm/ecore_drm_private.h
+++ b/src/lib/ecore_drm/ecore_drm_private.h
@@ -269,6 +269,16 @@ struct _Ecore_Drm_Evdev
 
    /* Ecore_Drm_Evdev_Capabilities caps; */
    Ecore_Drm_Seat_Capabilities seat_caps;
+
+   struct
+     {
+        struct
+          {
+             int rotation;
+             int x, y;
+             int w, h;
+          } transform;
+     } touch;
 };
 
 struct _Ecore_Drm_Sprite
-- 
2.7.4