diff options
| author | Hyungwon Hwang <human.hwang@samsung.com> | 2015-06-22 19:05:04 +0900 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2015-06-22 19:05:46 +0900 |
| commit | fc2e013f78c42fdafcb48f4922c2ae6d2c8e7d09 (patch) | |
| tree | e906df44bda58b6940586e75bce9eee97f258d8a /drivers/gpu/drm/exynos/exynos_drm_fimd.c | |
| parent | 3f46d807f861fb7304c9890fb091efb80161f2c7 (diff) | |
drm/exynos: add drm_iommu_attach_device_if_possible()
Every CRTC drivers in Exynos DRM implements the code which checks
whether IOMMU is supported or not, and if supported enable it.
Making new helper for it generalize each CRTC drivers.
Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fimd.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_fimd.c | 34 |
1 files changed, 8 insertions, 26 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 1e3bb72184d2..794e56c8798e 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -298,8 +298,9 @@ static void fimd_enable_shadow_channel_path(struct fimd_context *ctx, writel(val, ctx->regs + SHADOWCON); } -static void fimd_clear_channel(struct fimd_context *ctx) +static void fimd_clear_channels(struct exynos_drm_crtc *crtc) { + struct fimd_context *ctx = crtc->ctx; unsigned int win, ch_enabled = 0; DRM_DEBUG_KMS("%s\n", __FILE__); @@ -347,30 +348,6 @@ static void fimd_clear_channel(struct fimd_context *ctx) pm_runtime_put(ctx->dev); } -static int fimd_iommu_attach_devices(struct fimd_context *ctx, - struct drm_device *drm_dev) -{ - - /* attach this sub driver to iommu mapping if supported. */ - if (is_drm_iommu_supported(ctx->drm_dev)) { - int ret; - - /* - * If any channel is already active, iommu will throw - * a PAGE FAULT when enabled. So clear any channel if enabled. - */ - fimd_clear_channel(ctx); - ret = drm_iommu_attach_device(ctx->drm_dev, ctx->dev); - if (ret) { - DRM_ERROR("drm_iommu_attach failed.\n"); - return ret; - } - - } - - return 0; -} - static void fimd_iommu_detach_devices(struct fimd_context *ctx) { /* detach this sub driver from iommu mapping if supported. */ @@ -917,6 +894,7 @@ static const struct exynos_drm_crtc_ops fimd_crtc_ops = { .win_disable = fimd_win_disable, .te_handler = fimd_te_handler, .clock_enable = fimd_dp_clock_enable, + .clear_channels = fimd_clear_channels, }; static irqreturn_t fimd_irq_handler(int irq, void *dev_id) @@ -986,7 +964,11 @@ static int fimd_bind(struct device *dev, struct device *master, void *data) if (ctx->display) exynos_drm_create_enc_conn(drm_dev, ctx->display); - return fimd_iommu_attach_devices(ctx, drm_dev); + ret = drm_iommu_attach_device_if_possible(ctx->crtc, drm_dev, dev); + if (ret) + priv->pipe--; + + return ret; } static void fimd_unbind(struct device *dev, struct device *master, |