From 38c67d13993fd5454226934a22be558d2a6a8233 Mon Sep 17 00:00:00 2001
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From: Jeffy Chen <jeffy.chen@rock-chips.com>
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Date: Mon, 23 May 2022 11:46:38 +0800
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Subject: [PATCH 1/3] kms: Use Nth primary plane for Nth CRTC
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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---
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src/ws/atomic_kms_window_system.cpp | 10 ++++++++--
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1 file changed, 8 insertions(+), 2 deletions(-)
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diff --git a/src/ws/atomic_kms_window_system.cpp b/src/ws/atomic_kms_window_system.cpp
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index 1aa7948..b5c2ab5 100644
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--- a/src/ws/atomic_kms_window_system.cpp
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+++ b/src/ws/atomic_kms_window_system.cpp
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@@ -98,6 +98,7 @@ ManagedResource<drmModePlanePtr> get_plane_for_crtc(
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if (!plane_resources)
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throw ErrnoError{"Failed to get plane resources"};
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+ auto num_primaries = 0;
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for (auto i = 0u; i < plane_resources->count_planes; ++i)
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{
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auto plane = ManagedResource<drmModePlanePtr>{
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@@ -107,12 +108,17 @@ ManagedResource<drmModePlanePtr> get_plane_for_crtc(
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if (!plane)
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throw ErrnoError{"Failed to get plane"};
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+ if (!is_plane_primary(drm_fd, plane))
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+ continue;
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+
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+ /* Nth primary plane for Nth CRTC */
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+ if (num_primaries ++ != crtc_index)
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+ continue;
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+
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if (does_plane_support_crtc_index(plane, crtc_index))
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{
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ret_plane = std::move(plane);
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- if (is_plane_primary(drm_fd, ret_plane))
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- break;
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}
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}
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--
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2.20.1
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