diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/dc.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 4a015232e2e8..5f138b7c81bf 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -9,6 +9,7 @@ #include <linux/clk.h> #include <linux/debugfs.h> +#include <linux/iommu.h> #include <linux/reset.h> #include <soc/tegra/pmc.h> @@ -1290,6 +1291,17 @@ static int tegra_dc_init(struct host1x_client *client) struct tegra_drm *tegra = drm->dev_private; int err; + if (tegra->domain) { + err = iommu_attach_device(tegra->domain, dc->dev); + if (err < 0) { + dev_err(dc->dev, "failed to attach to domain: %d\n", + err); + return err; + } + + dc->domain = tegra->domain; + } + drm_crtc_init(drm, &dc->base, &tegra_crtc_funcs); drm_mode_crtc_set_gamma_size(&dc->base, 256); drm_crtc_helper_add(&dc->base, &tegra_crtc_helper_funcs); @@ -1347,6 +1359,11 @@ static int tegra_dc_exit(struct host1x_client *client) return err; } + if (dc->domain) { + iommu_detach_device(dc->domain, dc->dev); + dc->domain = NULL; + } + return 0; } |