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path: root/target/linux/brcm2708/patches-4.4/0276-drm-vc4-Move-the-plane-clipping-scaling-setup-to-a-s.patch
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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0276-drm-vc4-Move-the-plane-clipping-scaling-setup-to-a-s.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0276-drm-vc4-Move-the-plane-clipping-scaling-setup-to-a-s.patch143
1 files changed, 143 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0276-drm-vc4-Move-the-plane-clipping-scaling-setup-to-a-s.patch b/target/linux/brcm2708/patches-4.4/0276-drm-vc4-Move-the-plane-clipping-scaling-setup-to-a-s.patch
new file mode 100644
index 0000000000..af7bbe162b
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0276-drm-vc4-Move-the-plane-clipping-scaling-setup-to-a-s.patch
@@ -0,0 +1,143 @@
+From fd6dfd0af2ab83d8df5d7b17a52fbf0284e42f2b Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Mon, 28 Dec 2015 14:34:44 -0800
+Subject: [PATCH 276/423] drm/vc4: Move the plane clipping/scaling setup to a
+ separate function.
+
+As we add actual scaling, this is going to get way more complicated.
+
+Signed-off-by: Eric Anholt <eric@anholt.net>
+(cherry picked from commit 5c6799942003df91801b1d2277bba34d71f99603)
+---
+ drivers/gpu/drm/vc4/vc4_plane.c | 78 +++++++++++++++++++++++++++--------------
+ 1 file changed, 52 insertions(+), 26 deletions(-)
+
+--- a/drivers/gpu/drm/vc4/vc4_plane.c
++++ b/drivers/gpu/drm/vc4/vc4_plane.c
+@@ -40,6 +40,14 @@ struct vc4_plane_state {
+ * hardware at vc4_crtc_atomic_flush() time.
+ */
+ u32 __iomem *hw_dlist;
++
++ /* Clipped coordinates of the plane on the display. */
++ int crtc_x, crtc_y, crtc_w, crtc_h;
++
++ /* Offset to start scanning out from the start of the plane's
++ * BO.
++ */
++ u32 offset;
+ };
+
+ static inline struct vc4_plane_state *
+@@ -167,22 +175,17 @@ static void vc4_dlist_write(struct vc4_p
+ vc4_state->dlist[vc4_state->dlist_count++] = val;
+ }
+
+-/* Writes out a full display list for an active plane to the plane's
+- * private dlist state.
+- */
+-static int vc4_plane_mode_set(struct drm_plane *plane,
+- struct drm_plane_state *state)
++static int vc4_plane_setup_clipping_and_scaling(struct drm_plane_state *state)
+ {
+ struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
+ struct drm_framebuffer *fb = state->fb;
+- struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
+- u32 ctl0_offset = vc4_state->dlist_count;
+- const struct hvs_format *format = vc4_get_hvs_format(fb->pixel_format);
+- uint32_t offset = fb->offsets[0];
+- int crtc_x = state->crtc_x;
+- int crtc_y = state->crtc_y;
+- int crtc_w = state->crtc_w;
+- int crtc_h = state->crtc_h;
++
++ vc4_state->offset = fb->offsets[0];
++
++ vc4_state->crtc_x = state->crtc_x;
++ vc4_state->crtc_y = state->crtc_y;
++ vc4_state->crtc_w = state->crtc_w;
++ vc4_state->crtc_h = state->crtc_h;
+
+ if (state->crtc_w << 16 != state->src_w ||
+ state->crtc_h << 16 != state->src_h) {
+@@ -194,18 +197,41 @@ static int vc4_plane_mode_set(struct drm
+ return -EINVAL;
+ }
+
+- if (crtc_x < 0) {
+- offset += drm_format_plane_cpp(fb->pixel_format, 0) * -crtc_x;
+- crtc_w += crtc_x;
+- crtc_x = 0;
++ if (vc4_state->crtc_x < 0) {
++ vc4_state->offset += (drm_format_plane_cpp(fb->pixel_format,
++ 0) *
++ -vc4_state->crtc_x);
++ vc4_state->crtc_w += vc4_state->crtc_x;
++ vc4_state->crtc_x = 0;
+ }
+
+- if (crtc_y < 0) {
+- offset += fb->pitches[0] * -crtc_y;
+- crtc_h += crtc_y;
+- crtc_y = 0;
++ if (vc4_state->crtc_y < 0) {
++ vc4_state->offset += fb->pitches[0] * -vc4_state->crtc_y;
++ vc4_state->crtc_h += vc4_state->crtc_y;
++ vc4_state->crtc_y = 0;
+ }
+
++ return 0;
++}
++
++
++/* Writes out a full display list for an active plane to the plane's
++ * private dlist state.
++ */
++static int vc4_plane_mode_set(struct drm_plane *plane,
++ struct drm_plane_state *state)
++{
++ struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
++ struct drm_framebuffer *fb = state->fb;
++ struct drm_gem_cma_object *bo = drm_fb_cma_get_gem_obj(fb, 0);
++ u32 ctl0_offset = vc4_state->dlist_count;
++ const struct hvs_format *format = vc4_get_hvs_format(fb->pixel_format);
++ int ret;
++
++ ret = vc4_plane_setup_clipping_and_scaling(state);
++ if (ret)
++ return ret;
++
+ vc4_dlist_write(vc4_state,
+ SCALER_CTL0_VALID |
+ (format->pixel_order << SCALER_CTL0_ORDER_SHIFT) |
+@@ -215,8 +241,8 @@ static int vc4_plane_mode_set(struct drm
+ /* Position Word 0: Image Positions and Alpha Value */
+ vc4_dlist_write(vc4_state,
+ VC4_SET_FIELD(0xff, SCALER_POS0_FIXED_ALPHA) |
+- VC4_SET_FIELD(crtc_x, SCALER_POS0_START_X) |
+- VC4_SET_FIELD(crtc_y, SCALER_POS0_START_Y));
++ VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) |
++ VC4_SET_FIELD(vc4_state->crtc_y, SCALER_POS0_START_Y));
+
+ /* Position Word 1: Scaled Image Dimensions.
+ * Skipped due to SCALER_CTL0_UNITY scaling.
+@@ -228,8 +254,8 @@ static int vc4_plane_mode_set(struct drm
+ SCALER_POS2_ALPHA_MODE_PIPELINE :
+ SCALER_POS2_ALPHA_MODE_FIXED,
+ SCALER_POS2_ALPHA_MODE) |
+- VC4_SET_FIELD(crtc_w, SCALER_POS2_WIDTH) |
+- VC4_SET_FIELD(crtc_h, SCALER_POS2_HEIGHT));
++ VC4_SET_FIELD(vc4_state->crtc_w, SCALER_POS2_WIDTH) |
++ VC4_SET_FIELD(vc4_state->crtc_h, SCALER_POS2_HEIGHT));
+
+ /* Position Word 3: Context. Written by the HVS. */
+ vc4_dlist_write(vc4_state, 0xc0c0c0c0);
+@@ -237,7 +263,7 @@ static int vc4_plane_mode_set(struct drm
+ vc4_state->pw0_offset = vc4_state->dlist_count;
+
+ /* Pointer Word 0: RGB / Y Pointer */
+- vc4_dlist_write(vc4_state, bo->paddr + offset);
++ vc4_dlist_write(vc4_state, bo->paddr + vc4_state->offset);
+
+ /* Pointer Context Word 0: Written by the HVS */
+ vc4_dlist_write(vc4_state, 0xc0c0c0c0);