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87 lines
2.7 KiB
Diff
87 lines
2.7 KiB
Diff
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From 495fd0373ad234c8547697e3a7de1f1724c8498d Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Tue, 9 Apr 2019 17:19:51 +0100
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Subject: [PATCH] drm: vc4: Add support for H & V flips on each plane
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for FKMS
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They are near zero cost options for the HVS, therefore they
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may as well be implemented, and it allows us to invert the
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DSI display.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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drivers/gpu/drm/vc4/vc4_firmware_kms.c | 36 ++++++++++++++++++++++++++
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1 file changed, 36 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
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@@ -64,8 +64,21 @@ struct set_plane {
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u8 padding;
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u32 planes[4]; /* DMA address of each plane */
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+
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+ u32 transform;
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};
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+/* Values for the transform field */
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+#define TRANSFORM_NO_ROTATE 0
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+#define TRANSFORM_ROTATE_180 BIT(1)
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+#define TRANSFORM_FLIP_HRIZ BIT(16)
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+#define TRANSFORM_FLIP_VERT BIT(17)
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+
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+#define SUPPORTED_ROTATIONS (DRM_MODE_ROTATE_0 | \
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+ DRM_MODE_ROTATE_180 | \
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+ DRM_MODE_REFLECT_X | \
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+ DRM_MODE_REFLECT_Y)
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+
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struct mailbox_set_plane {
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struct rpi_firmware_property_tag_header tag;
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struct set_plane plane;
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@@ -277,6 +290,7 @@ static void vc4_plane_atomic_update(stru
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struct vc4_crtc *vc4_crtc = to_vc4_crtc(state->crtc);
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int num_planes = fb->format->num_planes;
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struct drm_display_mode *mode = &state->crtc->mode;
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+ unsigned int rotation = SUPPORTED_ROTATIONS;
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mb->plane.vc_image_type = vc_fmt->vc_image;
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mb->plane.width = fb->width;
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@@ -297,6 +311,24 @@ static void vc4_plane_atomic_update(stru
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mb->plane.is_vu = vc_fmt->is_vu;
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mb->plane.planes[0] = bo->paddr + fb->offsets[0];
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+ rotation = drm_rotation_simplify(state->rotation, rotation);
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+
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+ switch (rotation) {
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+ default:
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+ case DRM_MODE_ROTATE_0:
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+ mb->plane.transform = TRANSFORM_NO_ROTATE;
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+ break;
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+ case DRM_MODE_ROTATE_180:
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+ mb->plane.transform = TRANSFORM_ROTATE_180;
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+ break;
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+ case DRM_MODE_REFLECT_X:
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+ mb->plane.transform = TRANSFORM_FLIP_HRIZ;
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+ break;
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+ case DRM_MODE_REFLECT_Y:
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+ mb->plane.transform = TRANSFORM_FLIP_VERT;
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+ break;
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+ }
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+
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/* FIXME: If the dest rect goes off screen then clip the src rect so we
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* don't have off-screen pixels.
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*/
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@@ -516,9 +548,13 @@ static struct drm_plane *vc4_fkms_plane_
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formats, num_formats, modifiers,
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type, NULL);
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+ /* FIXME: Do we need to be checking return values from all these calls?
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+ */
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drm_plane_helper_add(plane, &vc4_plane_helper_funcs);
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drm_plane_create_alpha_property(plane);
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+ drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
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+ SUPPORTED_ROTATIONS);
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/*
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* Default frame buffer setup is with FB on -127, and raspistill etc
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