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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-06-08 11:59:37 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-06-08 21:23:21 +0200 |
commit | 3fc661a98c8046a27dcf45a63049ee6605ebd364 (patch) | |
tree | 0468b8f3c8d4aa13ecce333ab3ad84146263cbc4 /target/linux/brcm2708/patches-4.4/0281-drm-vc4-Add-a-proper-short-circut-path-for-legacy-cu.patch | |
parent | c17f02d2f272c6d74b20c2df050437f761d013a6 (diff) | |
download | master-31e0f0ae-3fc661a98c8046a27dcf45a63049ee6605ebd364.tar.gz master-31e0f0ae-3fc661a98c8046a27dcf45a63049ee6605ebd364.tar.bz2 master-31e0f0ae-3fc661a98c8046a27dcf45a63049ee6605ebd364.zip |
brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y
Also alphabetically order sound-soc kernel packages.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0281-drm-vc4-Add-a-proper-short-circut-path-for-legacy-cu.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0281-drm-vc4-Add-a-proper-short-circut-path-for-legacy-cu.patch | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0281-drm-vc4-Add-a-proper-short-circut-path-for-legacy-cu.patch b/target/linux/brcm2708/patches-4.4/0281-drm-vc4-Add-a-proper-short-circut-path-for-legacy-cu.patch deleted file mode 100644 index 46b0c64d28..0000000000 --- a/target/linux/brcm2708/patches-4.4/0281-drm-vc4-Add-a-proper-short-circut-path-for-legacy-cu.patch +++ /dev/null @@ -1,192 +0,0 @@ -From a53e75a061bbfb0bb24128a2a9c9961ec20e22ec Mon Sep 17 00:00:00 2001 -From: Eric Anholt <eric@anholt.net> -Date: Wed, 30 Dec 2015 11:50:22 -0800 -Subject: [PATCH 281/304] drm/vc4: Add a proper short-circut path for legacy - cursor updates. - -Previously, on every modeset we would allocate new display list -memory, recompute changed planes, write all of them to the new memory, -and pointed scanout at the new list (which will latch approximately at -the next line of scanout). We let -drm_atomic_helper_wait_for_vblanks() decide whether we needed to wait -for a vblank after a modeset before cleaning up the old state and -letting the next modeset proceed, and on legacy cursor updates we -wouldn't wait. If you moved the cursor fast enough, we could -potentially wrap around the display list memory area and overwrite the -existing display list while it was still being scanned out, resulting -in the HVS scanning out garbage or just halting. - -Instead of making cursor updates wait for scanout to move to the new -display list area (which introduces significant cursor lag in X), we -just rewrite our current display list. - -Signed-off-by: Eric Anholt <eric@anholt.net> -(cherry picked from commit 6674a904d68041d982ffb284d2827410765a097a) ---- - drivers/gpu/drm/vc4/vc4_kms.c | 9 ++++ - drivers/gpu/drm/vc4/vc4_plane.c | 94 ++++++++++++++++++++++++++++++++++++++--- - 2 files changed, 96 insertions(+), 7 deletions(-) - ---- a/drivers/gpu/drm/vc4/vc4_kms.c -+++ b/drivers/gpu/drm/vc4/vc4_kms.c -@@ -49,6 +49,15 @@ vc4_atomic_complete_commit(struct vc4_co - - drm_atomic_helper_commit_modeset_enables(dev, state); - -+ /* Make sure that drm_atomic_helper_wait_for_vblanks() -+ * actually waits for vblank. If we're doing a full atomic -+ * modeset (as opposed to a vc4_update_plane() short circuit), -+ * then we need to wait for scanout to be done with our -+ * display lists before we free it and potentially reallocate -+ * and overwrite the dlist memory with a new modeset. -+ */ -+ state->legacy_cursor_update = false; -+ - drm_atomic_helper_wait_for_vblanks(dev, state); - - drm_atomic_helper_cleanup_planes(dev, state); ---- a/drivers/gpu/drm/vc4/vc4_plane.c -+++ b/drivers/gpu/drm/vc4/vc4_plane.c -@@ -33,8 +33,12 @@ struct vc4_plane_state { - u32 dlist_size; /* Number of dwords allocated for the display list */ - u32 dlist_count; /* Number of used dwords in the display list. */ - -- /* Offset in the dlist to pointer word 0. */ -- u32 pw0_offset; -+ /* Offset in the dlist to various words, for pageflip or -+ * cursor updates. -+ */ -+ u32 pos0_offset; -+ u32 pos2_offset; -+ u32 ptr0_offset; - - /* Offset where the plane's dlist was last stored in the - * hardware at vc4_crtc_atomic_flush() time. -@@ -239,6 +243,7 @@ static int vc4_plane_mode_set(struct drm - SCALER_CTL0_UNITY); - - /* Position Word 0: Image Positions and Alpha Value */ -+ vc4_state->pos0_offset = vc4_state->dlist_count; - vc4_dlist_write(vc4_state, - VC4_SET_FIELD(0xff, SCALER_POS0_FIXED_ALPHA) | - VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) | -@@ -249,6 +254,7 @@ static int vc4_plane_mode_set(struct drm - */ - - /* Position Word 2: Source Image Size, Alpha Mode */ -+ vc4_state->pos2_offset = vc4_state->dlist_count; - vc4_dlist_write(vc4_state, - VC4_SET_FIELD(format->has_alpha ? - SCALER_POS2_ALPHA_MODE_PIPELINE : -@@ -260,9 +266,8 @@ static int vc4_plane_mode_set(struct drm - /* Position Word 3: Context. Written by the HVS. */ - vc4_dlist_write(vc4_state, 0xc0c0c0c0); - -- vc4_state->pw0_offset = vc4_state->dlist_count; -- - /* Pointer Word 0: RGB / Y Pointer */ -+ vc4_state->ptr0_offset = vc4_state->dlist_count; - vc4_dlist_write(vc4_state, bo->paddr + vc4_state->offset); - - /* Pointer Context Word 0: Written by the HVS */ -@@ -348,13 +353,13 @@ void vc4_plane_async_set_fb(struct drm_p - * scanout will start from this address as soon as the FIFO - * needs to refill with pixels. - */ -- writel(addr, &vc4_state->hw_dlist[vc4_state->pw0_offset]); -+ writel(addr, &vc4_state->hw_dlist[vc4_state->ptr0_offset]); - - /* Also update the CPU-side dlist copy, so that any later - * atomic updates that don't do a new modeset on our plane - * also use our updated address. - */ -- vc4_state->dlist[vc4_state->pw0_offset] = addr; -+ vc4_state->dlist[vc4_state->ptr0_offset] = addr; - } - - static const struct drm_plane_helper_funcs vc4_plane_helper_funcs = { -@@ -370,8 +375,83 @@ static void vc4_plane_destroy(struct drm - drm_plane_cleanup(plane); - } - -+/* Implements immediate (non-vblank-synced) updates of the cursor -+ * position, or falls back to the atomic helper otherwise. -+ */ -+static int -+vc4_update_plane(struct drm_plane *plane, -+ struct drm_crtc *crtc, -+ struct drm_framebuffer *fb, -+ int crtc_x, int crtc_y, -+ unsigned int crtc_w, unsigned int crtc_h, -+ uint32_t src_x, uint32_t src_y, -+ uint32_t src_w, uint32_t src_h) -+{ -+ struct drm_plane_state *plane_state; -+ struct vc4_plane_state *vc4_state; -+ -+ if (plane != crtc->cursor) -+ goto out; -+ -+ plane_state = plane->state; -+ vc4_state = to_vc4_plane_state(plane_state); -+ -+ if (!plane_state) -+ goto out; -+ -+ /* If we're changing the cursor contents, do that in the -+ * normal vblank-synced atomic path. -+ */ -+ if (fb != plane_state->fb) -+ goto out; -+ -+ /* No configuring new scaling in the fast path. */ -+ if (crtc_w != plane_state->crtc_w || -+ crtc_h != plane_state->crtc_h || -+ src_w != plane_state->src_w || -+ src_h != plane_state->src_h) { -+ goto out; -+ } -+ -+ /* Set the cursor's position on the screen. This is the -+ * expected change from the drm_mode_cursor_universal() -+ * helper. -+ */ -+ plane_state->crtc_x = crtc_x; -+ plane_state->crtc_y = crtc_y; -+ -+ /* Allow changing the start position within the cursor BO, if -+ * that matters. -+ */ -+ plane_state->src_x = src_x; -+ plane_state->src_y = src_y; -+ -+ /* Update the display list based on the new crtc_x/y. */ -+ vc4_plane_atomic_check(plane, plane_state); -+ -+ /* Note that we can't just call vc4_plane_write_dlist() -+ * because that would smash the context data that the HVS is -+ * currently using. -+ */ -+ writel(vc4_state->dlist[vc4_state->pos0_offset], -+ &vc4_state->hw_dlist[vc4_state->pos0_offset]); -+ writel(vc4_state->dlist[vc4_state->pos2_offset], -+ &vc4_state->hw_dlist[vc4_state->pos2_offset]); -+ writel(vc4_state->dlist[vc4_state->ptr0_offset], -+ &vc4_state->hw_dlist[vc4_state->ptr0_offset]); -+ -+ return 0; -+ -+out: -+ return drm_atomic_helper_update_plane(plane, crtc, fb, -+ crtc_x, crtc_y, -+ crtc_w, crtc_h, -+ src_x, src_y, -+ src_w, src_h); -+} -+ - static const struct drm_plane_funcs vc4_plane_funcs = { -- .update_plane = drm_atomic_helper_update_plane, -+ .update_plane = vc4_update_plane, - .disable_plane = drm_atomic_helper_disable_plane, - .destroy = vc4_plane_destroy, - .set_property = NULL, |