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drm/exynos: remove unnecessary checking to support iommu

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Already drm_iommu_attach_device and drm_iommu_detach_device check
whether support iommu internally, so we don't have to call
is_drm_iommu_supported before call them.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Joonyoung Shim 2015-07-02 21:49:38 +09:00 committed by Inki Dae
parent b24919575e
commit bf56608a73
7 changed files with 13 additions and 38 deletions
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1
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
View File

@ -514,7 +514,6 @@ static void decon_unbind(struct device *dev, struct device *master, void *data)
decon_disable(ctx->crtc);
/* detach this sub driver from iommu mapping if supported. */
if (is_drm_iommu_supported(ctx->drm_dev))
drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
}

1
drivers/gpu/drm/exynos/exynos7_drm_decon.c
View File

@ -136,7 +136,6 @@ static int decon_ctx_initialize(struct decon_context *ctx,
static void decon_ctx_remove(struct decon_context *ctx)
{
/* detach this sub driver from iommu mapping if supported. */
if (is_drm_iommu_supported(ctx->drm_dev))
drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
}

9
drivers/gpu/drm/exynos/exynos_drm_fimd.c
View File

@ -348,13 +348,6 @@ static void fimd_clear_channels(struct exynos_drm_crtc *crtc)
pm_runtime_put(ctx->dev);
}
static void fimd_iommu_detach_devices(struct fimd_context *ctx)
{
/* detach this sub driver from iommu mapping if supported. */
if (is_drm_iommu_supported(ctx->drm_dev))
drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
}
static u32 fimd_calc_clkdiv(struct fimd_context *ctx,
const struct drm_display_mode *mode)
{
@ -978,7 +971,7 @@ static void fimd_unbind(struct device *dev, struct device *master,
fimd_disable(ctx->crtc);
fimd_iommu_detach_devices(ctx);
drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
if (ctx->display)
exynos_dpi_remove(ctx->display);

6
drivers/gpu/drm/exynos/exynos_drm_g2d.c
View File

@ -1319,9 +1319,6 @@ static int g2d_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
return ret;
}
if (!is_drm_iommu_supported(drm_dev))
return 0;
ret = drm_iommu_attach_device(drm_dev, dev);
if (ret < 0) {
dev_err(dev, "failed to enable iommu.\n");
@ -1334,9 +1331,6 @@ static int g2d_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
static void g2d_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
{
if (!is_drm_iommu_supported(drm_dev))
return;
drm_iommu_detach_device(drm_dev, dev);
}

11
drivers/gpu/drm/exynos/exynos_drm_iommu.c
View File

@ -87,10 +87,8 @@ int drm_iommu_attach_device(struct drm_device *drm_dev,
struct device *dev = drm_dev->dev;
int ret;
if (!dev->archdata.mapping) {
DRM_ERROR("iommu_mapping is null.\n");
return -EFAULT;
}
if (!dev->archdata.mapping)
return 0;
subdrv_dev->dma_parms = devm_kzalloc(subdrv_dev,
sizeof(*subdrv_dev->dma_parms),
@ -148,13 +146,10 @@ void drm_iommu_detach_device(struct drm_device *drm_dev,
int drm_iommu_attach_device_if_possible(struct exynos_drm_crtc *exynos_crtc,
struct drm_device *drm_dev, struct device *subdrv_dev)
{
int ret = 0;
if (is_drm_iommu_supported(drm_dev)) {
if (exynos_crtc->ops->clear_channels)
exynos_crtc->ops->clear_channels(exynos_crtc);
return drm_iommu_attach_device(drm_dev, subdrv_dev);
}
return ret;
return drm_iommu_attach_device(drm_dev, subdrv_dev);
}

4
drivers/gpu/drm/exynos/exynos_drm_ipp.c
View File

@ -1622,14 +1622,12 @@ static int ipp_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
INIT_LIST_HEAD(&ippdrv->cmd_list);
mutex_init(&ippdrv->cmd_lock);
if (is_drm_iommu_supported(drm_dev)) {
ret = drm_iommu_attach_device(drm_dev, ippdrv->dev);
if (ret) {
DRM_ERROR("failed to activate iommu\n");
goto err;
}
}
}
return 0;
@ -1637,7 +1635,6 @@ err:
/* get ipp driver entry */
list_for_each_entry_continue_reverse(ippdrv, &exynos_drm_ippdrv_list,
drv_list) {
if (is_drm_iommu_supported(drm_dev))
drm_iommu_detach_device(drm_dev, ippdrv->dev);
ipp_remove_id(&ctx->ipp_idr, &ctx->ipp_lock,
@ -1654,7 +1651,6 @@ static void ipp_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
/* get ipp driver entry */
list_for_each_entry_safe(ippdrv, t, &exynos_drm_ippdrv_list, drv_list) {
if (is_drm_iommu_supported(drm_dev))
drm_iommu_detach_device(drm_dev, ippdrv->dev);
ipp_remove_id(&ctx->ipp_idr, &ctx->ipp_lock,

1
drivers/gpu/drm/exynos/exynos_mixer.c
View File

@ -891,7 +891,6 @@ static int mixer_initialize(struct mixer_context *mixer_ctx,
static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
{
if (is_drm_iommu_supported(mixer_ctx->drm_dev))
drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
}