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| author | Thierry Reding <treding@nvidia.com> | 2018-05-04 15:02:24 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-05-17 14:08:40 +0200 |
| commit | 0c407de5ed1a329468122cbf4f3e727e0c1e3f36 (patch) | |
| tree | 3f96f17886dcfc453e117f3820fb3c24f80133f1 /drivers/gpu/drm/tegra/dc.c | |
| parent | 230630bd3834af0ea6ec75354ec21819de148ee1 (diff) | |
| download | linux-stable-0c407de5ed1a329468122cbf4f3e727e0c1e3f36.tar.gz linux-stable-0c407de5ed1a329468122cbf4f3e727e0c1e3f36.tar.bz2 linux-stable-0c407de5ed1a329468122cbf4f3e727e0c1e3f36.zip | |
drm/tegra: Refactor IOMMU attach/detach
Attaching to and detaching from an IOMMU uses the same code sequence in
every driver, so factor it out into separate helpers.
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/tegra/dc.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 42 |
1 files changed, 7 insertions, 35 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index c843f11043db..3e7ec3937346 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1837,21 +1837,11 @@ static int tegra_dc_init(struct host1x_client *client) if (!dc->syncpt) dev_warn(dc->dev, "failed to allocate syncpoint\n"); - if (tegra->domain) { - dc->group = iommu_group_get(client->dev); - - if (dc->group && dc->group != tegra->group) { - err = iommu_attach_group(tegra->domain, dc->group); - if (err < 0) { - dev_err(dc->dev, - "failed to attach to domain: %d\n", - err); - iommu_group_put(dc->group); - return err; - } - - tegra->group = dc->group; - } + dc->group = host1x_client_iommu_attach(client, true); + if (IS_ERR(dc->group)) { + err = PTR_ERR(dc->group); + dev_err(client->dev, "failed to attach to domain: %d\n", err); + return err; } if (dc->soc->wgrps) @@ -1916,15 +1906,7 @@ cleanup: if (!IS_ERR(primary)) drm_plane_cleanup(primary); - if (dc->group) { - if (dc->group == tegra->group) { - iommu_detach_group(tegra->domain, dc->group); - tegra->group = NULL; - } - - iommu_group_put(dc->group); - } - + host1x_client_iommu_detach(client, dc->group); host1x_syncpt_free(dc->syncpt); return err; @@ -1932,9 +1914,7 @@ cleanup: static int tegra_dc_exit(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); struct tegra_dc *dc = host1x_client_to_dc(client); - struct tegra_drm *tegra = drm->dev_private; int err; devm_free_irq(dc->dev, dc->irq, dc); @@ -1945,15 +1925,7 @@ static int tegra_dc_exit(struct host1x_client *client) return err; } - if (dc->group) { - if (dc->group == tegra->group) { - iommu_detach_group(tegra->domain, dc->group); - tegra->group = NULL; - } - - iommu_group_put(dc->group); - } - + host1x_client_iommu_detach(client, dc->group); host1x_syncpt_free(dc->syncpt); return 0; |