Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull DRM updates from Dave Airlie:
 "Like all good pull reqs this ends with a revert, so it must mean we
  tested it,

[ Ed. That's _one_ way of looking at it ]

  This pull is missing nouveau, Ben has been stuck trying to track down
  a very longstanding bug that revealed itself due to some other
  changes.  I've asked him to send you a direct pull request for nouveau
  once he cleans things up.  I'm away until Monday so don't want to
  delay things, you can make a decision on that when he sends it, I have
  my phone so I can ack things just not really merge much.

  It has one trivial conflict with your tree in armada_drv.c, and also
  the pull request contains some component changes that are already in
  your tree, the base tree from Russell went via Greg's tree already,
  but some stuff still shows up in here that doesn't when I merge my
  tree into yours.

  Otherwise all pretty standard graphics fare, one new driver and
  changes all over the place.

  New drivers:
   - sti kms driver for STMicroelectronics chipsets stih416 and stih407.

  core:
   - lots of cleanups to the drm core
   - DP MST helper code merged
   - universal cursor planes.
   - render nodes enabled by default

  panel:
   - better panel interfaces
   - new panel support
   - non-continuous cock advertising ability

  ttm:
   - shrinker fixes

  i915:
   - hopefully ditched UMS support
   - runtime pm fixes
   - psr tracking and locking - now enabled by default
   - userptr fixes
   - backlight brightness fixes
   - MST support merged
   - runtime PM for dpms
   - primary planes locking fixes
   - gen8 hw semaphore support
   - fbc fixes
   - runtime PM on SOix sleep state hw.
   - mmio base page flipping
   - lots of vlv/chv fixes.
   - universal cursor planes

  radeon:
   - Hawaii fixes
   - display scalar support for non-fixed mode displays
   - new firmware format support
   - dpm on more asics by default
   - GPUVM improvements
   - uncached and wc GTT buffers
   - BOs > visible VRAM

  exynos:
   - i80 interface support
   - module auto-loading
   - ipp driver consolidated.

  armada:
   - irq handling in crtc layer only
   - crtc renumbering
   - add component support
   - DT interaction changes.

  tegra:
   - load as module fixes
   - eDP bpp and sync polarity fixed
   - DSI non-continuous clock mode support
   - better support for importing buffers from nouveau

  msm:
   - mdp5/adq8084 v1.3 hw enablement
   - devicetree clk changse
   - ifc6410 board working

  tda998x:
   - component support
   - DT documentation update

  vmwgfx:
   - fix compat shader namespace"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (551 commits)
  Revert "drm: drop redundant drm_file->is_master"
  drm/panel: simple: Use devm_gpiod_get_optional()
  drm/dsi: Replace upcasting macro by function
  drm/panel: ld9040: Replace upcasting macro by function
  drm/exynos: dp: Modify driver to support drm_panel
  drm/exynos: Move DP setup into commit()
  drm/panel: simple: Add AUO B133HTN01 panel support
  drm/panel: simple: Support delays in panel functions
  drm/panel: simple: Add proper definition for prepare and unprepare
  drm/panel: s6e8aa0: Add proper definition for prepare and unprepare
  drm/panel: ld9040: Add proper definition for prepare and unprepare
  drm/tegra: Add support for panel prepare and unprepare routines
  drm/exynos: dsi: Add support for panel prepare and unprepare routines
  drm/exynos: dpi: Add support for panel prepare and unprepare routines
  drm/panel: simple: Add dummy prepare and unprepare routines
  drm/panel: s6e8aa0: Add dummy prepare and unprepare routines
  drm/panel: ld9040: Add dummy prepare and unprepare routines
  drm/panel: Provide convenience wrapper for .get_modes()
  drm/panel: add .prepare() and .unprepare() functions
  drm/panel: simple: Remove simple-panel compatible
  ...

1 files changed, 140 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_rect.c b/drivers/gpu/drm/drm_rect.c
index 7047ca025787..631f5afd451c 100644
--- a/drivers/gpu/drm/drm_rect.c
+++ b/drivers/gpu/drm/drm_rect.c
@@ -293,3 +293,143 @@ void drm_rect_debug_print(const struct drm_rect *r, bool fixed_point)
                 DRM_DEBUG_KMS("%dx%d%+d%+d\n", w, h, r->x1, r->y1);
 }
 EXPORT_SYMBOL(drm_rect_debug_print);
+
+/**
+ * drm_rect_rotate - Rotate the rectangle
+ * @r: rectangle to be rotated
+ * @width: Width of the coordinate space
+ * @height: Height of the coordinate space
+ * @rotation: Transformation to be applied
+ *
+ * Apply @rotation to the coordinates of rectangle @r.
+ *
+ * @width and @height combined with @rotation define
+ * the location of the new origin.
+ *
+ * @width correcsponds to the horizontal and @height
+ * to the vertical axis of the untransformed coordinate
+ * space.
+ */
+void drm_rect_rotate(struct drm_rect *r,
+                     int width, int height,
+                     unsigned int rotation)
+{
+        struct drm_rect tmp;
+
+        if (rotation & (BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y))) {
+                tmp = *r;
+
+                if (rotation & BIT(DRM_REFLECT_X)) {
+                        r->x1 = width - tmp.x2;
+                        r->x2 = width - tmp.x1;
+                }
+
+                if (rotation & BIT(DRM_REFLECT_Y)) {
+                        r->y1 = height - tmp.y2;
+                        r->y2 = height - tmp.y1;
+                }
+        }
+
+        switch (rotation & 0xf) {
+        case BIT(DRM_ROTATE_0):
+                break;
+        case BIT(DRM_ROTATE_90):
+                tmp = *r;
+                r->x1 = tmp.y1;
+                r->x2 = tmp.y2;
+                r->y1 = width - tmp.x2;
+                r->y2 = width - tmp.x1;
+                break;
+        case BIT(DRM_ROTATE_180):
+                tmp = *r;
+                r->x1 = width - tmp.x2;
+                r->x2 = width - tmp.x1;
+                r->y1 = height - tmp.y2;
+                r->y2 = height - tmp.y1;
+                break;
+        case BIT(DRM_ROTATE_270):
+                tmp = *r;
+                r->x1 = height - tmp.y2;
+                r->x2 = height - tmp.y1;
+                r->y1 = tmp.x1;
+                r->y2 = tmp.x2;
+                break;
+        default:
+                break;
+        }
+}
+EXPORT_SYMBOL(drm_rect_rotate);
+
+/**
+ * drm_rect_rotate_inv - Inverse rotate the rectangle
+ * @r: rectangle to be rotated
+ * @width: Width of the coordinate space
+ * @height: Height of the coordinate space
+ * @rotation: Transformation whose inverse is to be applied
+ *
+ * Apply the inverse of @rotation to the coordinates
+ * of rectangle @r.
+ *
+ * @width and @height combined with @rotation define
+ * the location of the new origin.
+ *
+ * @width correcsponds to the horizontal and @height
+ * to the vertical axis of the original untransformed
+ * coordinate space, so that you never have to flip
+ * them when doing a rotatation and its inverse.
+ * That is, if you do:
+ *
+ * drm_rotate(&r, width, height, rotation);
+ * drm_rotate_inv(&r, width, height, rotation);
+ *
+ * you will always get back the original rectangle.
+ */
+void drm_rect_rotate_inv(struct drm_rect *r,
+                         int width, int height,
+                         unsigned int rotation)
+{
+        struct drm_rect tmp;
+
+        switch (rotation & 0xf) {
+        case BIT(DRM_ROTATE_0):
+                break;
+        case BIT(DRM_ROTATE_90):
+                tmp = *r;
+                r->x1 = width - tmp.y2;
+                r->x2 = width - tmp.y1;
+                r->y1 = tmp.x1;
+                r->y2 = tmp.x2;
+                break;
+        case BIT(DRM_ROTATE_180):
+                tmp = *r;
+                r->x1 = width - tmp.x2;
+                r->x2 = width - tmp.x1;
+                r->y1 = height - tmp.y2;
+                r->y2 = height - tmp.y1;
+                break;
+        case BIT(DRM_ROTATE_270):
+                tmp = *r;
+                r->x1 = tmp.y1;
+                r->x2 = tmp.y2;
+                r->y1 = height - tmp.x2;
+                r->y2 = height - tmp.x1;
+                break;
+        default:
+                break;
+        }
+
+        if (rotation & (BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y))) {
+                tmp = *r;
+
+                if (rotation & BIT(DRM_REFLECT_X)) {
+                        r->x1 = width - tmp.x2;
+                        r->x2 = width - tmp.x1;
+                }
+
+                if (rotation & BIT(DRM_REFLECT_Y)) {
+                        r->y1 = height - tmp.y2;
+                        r->y2 = height - tmp.y1;
+                }
+        }
+}
+EXPORT_SYMBOL(drm_rect_rotate_inv);