brcm2708: update to latest patches from RPi foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0527-drm-vc4-Add-support-for-H-V-flips-on-each-plane-for-.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0527-drm-vc4-Add-support-for-H-V-flips-on-each-plane-for-.patch b/target/linux/brcm2708/patches-4.19/950-0527-drm-vc4-Add-support-for-H-V-flips-on-each-plane-for-.patch
new file mode 100644 (file)
index 0000000..c3f48ec
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0527-drm-vc4-Add-support-for-H-V-flips-on-each-plane-for-.patch
@@ -0,0 +1,86 @@
+From 129100bd38125bef5fe237ab867349dbe8b210ba Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 9 Apr 2019 17:19:51 +0100
+Subject: [PATCH] drm: vc4: Add support for H & V flips on each plane
+ for FKMS
+
+They are near zero cost options for the HVS, therefore they
+may as well be implemented, and it allows us to invert the
+DSI display.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/gpu/drm/vc4/vc4_firmware_kms.c | 36 ++++++++++++++++++++++++++
+ 1 file changed, 36 insertions(+)
+
+--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
+@@ -61,8 +61,21 @@ struct set_plane {
+       u8 padding;
+ 
+       u32 planes[4];  /* DMA address of each plane */
++
++      u32 transform;
+ };
+ 
++/* Values for the transform field */
++#define TRANSFORM_NO_ROTATE   0
++#define TRANSFORM_ROTATE_180  BIT(1)
++#define TRANSFORM_FLIP_HRIZ   BIT(16)
++#define TRANSFORM_FLIP_VERT   BIT(17)
++
++#define SUPPORTED_ROTATIONS   (DRM_MODE_ROTATE_0 | \
++                               DRM_MODE_ROTATE_180 | \
++                               DRM_MODE_REFLECT_X | \
++                               DRM_MODE_REFLECT_Y)
++
+ struct mailbox_set_plane {
+       struct rpi_firmware_property_tag_header tag;
+       struct set_plane plane;
+@@ -274,6 +287,7 @@ static void vc4_plane_atomic_update(stru
+       struct vc4_crtc *vc4_crtc = to_vc4_crtc(state->crtc);
+       int num_planes = fb->format->num_planes;
+       struct drm_display_mode *mode = &state->crtc->mode;
++      unsigned int rotation = SUPPORTED_ROTATIONS;
+ 
+       mb->plane.vc_image_type = vc_fmt->vc_image;
+       mb->plane.width = fb->width;
+@@ -294,6 +308,24 @@ static void vc4_plane_atomic_update(stru
+       mb->plane.is_vu = vc_fmt->is_vu;
+       mb->plane.planes[0] = bo->paddr + fb->offsets[0];
+ 
++      rotation = drm_rotation_simplify(state->rotation, rotation);
++
++      switch (rotation) {
++      default:
++      case DRM_MODE_ROTATE_0:
++              mb->plane.transform = TRANSFORM_NO_ROTATE;
++              break;
++      case DRM_MODE_ROTATE_180:
++              mb->plane.transform = TRANSFORM_ROTATE_180;
++              break;
++      case DRM_MODE_REFLECT_X:
++              mb->plane.transform = TRANSFORM_FLIP_HRIZ;
++              break;
++      case DRM_MODE_REFLECT_Y:
++              mb->plane.transform = TRANSFORM_FLIP_VERT;
++              break;
++      }
++
+       /* FIXME: If the dest rect goes off screen then clip the src rect so we
+        * don't have off-screen pixels.
+        */
+@@ -514,9 +546,13 @@ static struct drm_plane *vc4_fkms_plane_
+                                      formats, num_formats, modifiers,
+                                      type, NULL);
+ 
++      /* FIXME: Do we need to be checking return values from all these calls?
++       */
+       drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
+ 
+       drm_plane_create_alpha_property(plane);
++      drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
++                                         SUPPORTED_ROTATIONS);
+ 
+       /*
+        * Default frame buffer setup is with FB on -127, and raspistill etc