[RFC PATCH v1 3/6] drm/tegra: Avoid implicit DMA backing with IOMMU
From: Dmitry Osipenko <hidden>
Date: 2018-07-26 23:22:54
Also in:
dri-devel, linux-iommu, linux-tegra, lkml, nouveau
Subsystem:
drm drivers, drm drivers for nvidia tegra, the rest · Maintainers:
David Airlie, Simona Vetter, Thierry Reding, Mikko Perttunen, Linus Torvalds
Tegra DRM manages IOMMU by itself, backing DMA with IOMMU by the drivers core breaks the Tegra driver. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/gpu/drm/tegra/dc.c | 1 + drivers/gpu/drm/tegra/gr2d.c | 1 + drivers/gpu/drm/tegra/gr3d.c | 1 + drivers/gpu/drm/tegra/vic.c | 1 + 4 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index eb9bb83f8f5d..4827770939e3 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c@@ -2675,6 +2675,7 @@ static const struct dev_pm_ops tegra_dc_pm_ops = { struct platform_driver tegra_dc_driver = { .driver = { .name = "tegra-dc", + .no_implicit_iommu = true, .of_match_table = tegra_dc_of_match, .pm = &tegra_dc_pm_ops, },
diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c
index 3c5503f1bf3d..e427585ef5cc 100644
--- a/drivers/gpu/drm/tegra/gr2d.c
+++ b/drivers/gpu/drm/tegra/gr2d.c@@ -327,6 +327,7 @@ static int gr2d_remove(struct platform_device *pdev) struct platform_driver tegra_gr2d_driver = { .driver = { .name = "tegra-gr2d", + .no_implicit_iommu = true, .of_match_table = gr2d_match, }, .probe = gr2d_probe,
diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c
index 651e697ccbba..f54710c36afb 100644
--- a/drivers/gpu/drm/tegra/gr3d.c
+++ b/drivers/gpu/drm/tegra/gr3d.c@@ -481,6 +481,7 @@ static int gr3d_remove(struct platform_device *pdev) struct platform_driver tegra_gr3d_driver = { .driver = { .name = "tegra-gr3d", + .no_implicit_iommu = true, .of_match_table = tegra_gr3d_match, }, .probe = gr3d_probe,
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c
index 0e6642bb8524..4ecc466ee490 100644
--- a/drivers/gpu/drm/tegra/vic.c
+++ b/drivers/gpu/drm/tegra/vic.c@@ -402,6 +402,7 @@ static const struct dev_pm_ops vic_pm_ops = { struct platform_driver tegra_vic_driver = { .driver = { .name = "tegra-vic", + .no_implicit_iommu = true, .of_match_table = vic_match, .pm = &vic_pm_ops },
--
2.18.0
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