| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.8 104/138] drm/imx: ipuv3-plane: Switch EBA buffer only when we dont need modeset | Date | Wed, 9 Nov 2016 11:46:27 +0100 |
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4.8-stable review patch. If anyone has any objections, please let me know.
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From: Liu Ying <gnuiyl@gmail.com>
commit 43daa01323da37a3692cabe1579ef5c2c4372e06 upstream.
We added active plane reconfiguration support by forcing a full modeset operation. So, looking at old_plane_state->fb to determine whether we need to switch EBA buffer(for hardware double buffering) in ipu_plane_atomic_set_base() or not is no more correct. Instead, we should do that only when we don't need modeset, otherwise, we initialize the two EBA buffers with the buffer address.
Fixes: c6c1f9bc798b ("drm/imx: Add active plane reconfiguration support") Signed-off-by: Liu Ying <gnuiyl@gmail.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/gpu/drm/imx/ipuv3-plane.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -108,6 +108,7 @@ static void ipu_plane_atomic_set_base(st { struct drm_plane *plane = &ipu_plane->base; struct drm_plane_state *state = plane->state; + struct drm_crtc_state *crtc_state = state->crtc->state; struct drm_framebuffer *fb = state->fb; unsigned long eba, ubo, vbo; int active; @@ -149,7 +150,7 @@ static void ipu_plane_atomic_set_base(st break; } - if (old_state->fb) { + if (!drm_atomic_crtc_needs_modeset(crtc_state)) { active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch); ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba); ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
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