+++ /dev/null
-From 0d592a7685e41d0bb1816a4fedb11d3570474417 Mon Sep 17 00:00:00 2001
-From: Boris Brezillon <boris.brezillon@bootlin.com>
-Date: Thu, 6 Dec 2018 15:24:38 +0100
-Subject: [PATCH 716/806] drm/vc4: Take margin setup into account when updating
- planes
-
-Commit 666e73587f90f42d90385c1bea1009a650bf73f4 upstream.
-
-Applyin margins is just a matter of scaling all planes appropriately
-and adjusting the CRTC X/Y offset to account for the
-left/right/top/bottom borders.
-
-Create a vc4_plane_margins_adj() function doing that and call it from
-vc4_plane_setup_clipping_and_scaling() so that we are ready to attach
-margins properties to the HDMI connector.
-
-Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
-Reviewed-by: Eric Anholt <eric@anholt.net>
-Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-Link: https://patchwork.freedesktop.org/patch/msgid/20181206142439.10441-5-boris.brezillon@bootlin.com
----
- drivers/gpu/drm/vc4/vc4_crtc.c | 43 +++++++++++++++++++++++++++
- drivers/gpu/drm/vc4/vc4_drv.h | 3 ++
- drivers/gpu/drm/vc4/vc4_plane.c | 51 +++++++++++++++++++++++++++++++++
- 3 files changed, 97 insertions(+)
-
---- a/drivers/gpu/drm/vc4/vc4_crtc.c
-+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
-@@ -48,6 +48,13 @@ struct vc4_crtc_state {
- struct drm_mm_node mm;
- bool feed_txp;
- bool txp_armed;
-+
-+ struct {
-+ unsigned int left;
-+ unsigned int right;
-+ unsigned int top;
-+ unsigned int bottom;
-+ } margins;
- };
-
- static inline struct vc4_crtc_state *
-@@ -623,6 +630,37 @@ static enum drm_mode_status vc4_crtc_mod
- return MODE_OK;
- }
-
-+void vc4_crtc_get_margins(struct drm_crtc_state *state,
-+ unsigned int *left, unsigned int *right,
-+ unsigned int *top, unsigned int *bottom)
-+{
-+ struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state);
-+ struct drm_connector_state *conn_state;
-+ struct drm_connector *conn;
-+ int i;
-+
-+ *left = vc4_state->margins.left;
-+ *right = vc4_state->margins.right;
-+ *top = vc4_state->margins.top;
-+ *bottom = vc4_state->margins.bottom;
-+
-+ /* We have to interate over all new connector states because
-+ * vc4_crtc_get_margins() might be called before
-+ * vc4_crtc_atomic_check() which means margins info in vc4_crtc_state
-+ * might be outdated.
-+ */
-+ for_each_new_connector_in_state(state->state, conn, conn_state, i) {
-+ if (conn_state->crtc != state->crtc)
-+ continue;
-+
-+ *left = conn_state->tv.margins.left;
-+ *right = conn_state->tv.margins.right;
-+ *top = conn_state->tv.margins.top;
-+ *bottom = conn_state->tv.margins.bottom;
-+ break;
-+ }
-+}
-+
- static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
- struct drm_crtc_state *state)
- {
-@@ -670,6 +708,10 @@ static int vc4_crtc_atomic_check(struct
- vc4_state->feed_txp = false;
- }
-
-+ vc4_state->margins.left = conn_state->tv.margins.left;
-+ vc4_state->margins.right = conn_state->tv.margins.right;
-+ vc4_state->margins.top = conn_state->tv.margins.top;
-+ vc4_state->margins.bottom = conn_state->tv.margins.bottom;
- break;
- }
-
-@@ -971,6 +1013,7 @@ static struct drm_crtc_state *vc4_crtc_d
-
- old_vc4_state = to_vc4_crtc_state(crtc->state);
- vc4_state->feed_txp = old_vc4_state->feed_txp;
-+ vc4_state->margins = old_vc4_state->margins;
-
- __drm_atomic_helper_crtc_duplicate_state(crtc, &vc4_state->base);
- return &vc4_state->base;
---- a/drivers/gpu/drm/vc4/vc4_drv.h
-+++ b/drivers/gpu/drm/vc4/vc4_drv.h
-@@ -705,6 +705,9 @@ bool vc4_crtc_get_scanoutpos(struct drm_
- const struct drm_display_mode *mode);
- void vc4_crtc_handle_vblank(struct vc4_crtc *crtc);
- void vc4_crtc_txp_armed(struct drm_crtc_state *state);
-+void vc4_crtc_get_margins(struct drm_crtc_state *state,
-+ unsigned int *right, unsigned int *left,
-+ unsigned int *top, unsigned int *bottom);
-
- /* vc4_debugfs.c */
- int vc4_debugfs_init(struct drm_minor *minor);
---- a/drivers/gpu/drm/vc4/vc4_plane.c
-+++ b/drivers/gpu/drm/vc4/vc4_plane.c
-@@ -258,6 +258,52 @@ static u32 vc4_get_scl_field(struct drm_
- }
- }
-
-+static int vc4_plane_margins_adj(struct drm_plane_state *pstate)
-+{
-+ struct vc4_plane_state *vc4_pstate = to_vc4_plane_state(pstate);
-+ unsigned int left, right, top, bottom, adjhdisplay, adjvdisplay;
-+ struct drm_crtc_state *crtc_state;
-+
-+ crtc_state = drm_atomic_get_new_crtc_state(pstate->state,
-+ pstate->crtc);
-+
-+ vc4_crtc_get_margins(crtc_state, &left, &right, &top, &bottom);
-+ if (!left && !right && !top && !bottom)
-+ return 0;
-+
-+ if (left + right >= crtc_state->mode.hdisplay ||
-+ top + bottom >= crtc_state->mode.vdisplay)
-+ return -EINVAL;
-+
-+ adjhdisplay = crtc_state->mode.hdisplay - (left + right);
-+ vc4_pstate->crtc_x = DIV_ROUND_CLOSEST(vc4_pstate->crtc_x *
-+ adjhdisplay,
-+ crtc_state->mode.hdisplay);
-+ vc4_pstate->crtc_x += left;
-+ if (vc4_pstate->crtc_x > crtc_state->mode.hdisplay - left)
-+ vc4_pstate->crtc_x = crtc_state->mode.hdisplay - left;
-+
-+ adjvdisplay = crtc_state->mode.vdisplay - (top + bottom);
-+ vc4_pstate->crtc_y = DIV_ROUND_CLOSEST(vc4_pstate->crtc_y *
-+ adjvdisplay,
-+ crtc_state->mode.vdisplay);
-+ vc4_pstate->crtc_y += top;
-+ if (vc4_pstate->crtc_y > crtc_state->mode.vdisplay - top)
-+ vc4_pstate->crtc_y = crtc_state->mode.vdisplay - top;
-+
-+ vc4_pstate->crtc_w = DIV_ROUND_CLOSEST(vc4_pstate->crtc_w *
-+ adjhdisplay,
-+ crtc_state->mode.hdisplay);
-+ vc4_pstate->crtc_h = DIV_ROUND_CLOSEST(vc4_pstate->crtc_h *
-+ adjvdisplay,
-+ crtc_state->mode.vdisplay);
-+
-+ if (!vc4_pstate->crtc_w || !vc4_pstate->crtc_h)
-+ return -EINVAL;
-+
-+ return 0;
-+}
-+
- static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
- {
- struct drm_plane *plane = state->plane;
-@@ -269,6 +315,7 @@ static int vc4_plane_setup_clipping_and_
- int num_planes = fb->format->num_planes;
- u32 h_subsample = 1;
- u32 v_subsample = 1;
-+ int ret;
- int i;
-
- for (i = 0; i < num_planes; i++)
-@@ -292,6 +339,10 @@ static int vc4_plane_setup_clipping_and_
- vc4_state->crtc_w = state->crtc_w;
- vc4_state->crtc_h = state->crtc_h;
-
-+ ret = vc4_plane_margins_adj(state);
-+ if (ret)
-+ return ret;
-+
- vc4_state->x_scaling[0] = vc4_get_scaling_mode(vc4_state->src_w[0],
- vc4_state->crtc_w);
- vc4_state->y_scaling[0] = vc4_get_scaling_mode(vc4_state->src_h[0],
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