| Message ID | 1341999603-28316-6-git-send-email-prathyush.k@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
> -----Original Message----- > From: Prathyush K [mailto:prathyush.k@samsung.com] > Sent: Wednesday, July 11, 2012 6:40 PM > To: dri-devel@lists.freedesktop.org > Cc: prathyush@chromium.org; m.szyprowski@samsung.com; inki.dae@samsung.com; > subash.ramaswamy@linaro.org > Subject: [PATCH 5/7] drm/exynos: attach drm device with common drm mapping > > This patch sets the common mapping created during drm init, to the > drm device's archdata. The dma_ops of drm device is set as arm_iommu_ops. > The common mapping is shared across all the drm devices which ensures > that any buffer allocated with drm is accessible by drm-fimd or drm-hdmi > or both. > > Signed-off-by: Prathyush K <prathyush.k@samsung.com> > --- > drivers/gpu/drm/exynos/exynos_drm_drv.c | 9 +++++++++ > 1 files changed, 9 insertions(+), 0 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c > b/drivers/gpu/drm/exynos/exynos_drm_drv.c > index c3ad87e..2e40ca8 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c > @@ -276,6 +276,15 @@ static struct drm_driver exynos_drm_driver = { > > static int exynos_drm_platform_probe(struct platform_device *pdev) > { > +#ifdef CONFIG_EXYNOS_IOMMU > + struct device *dev = &pdev->dev; > + > + kref_get(&exynos_drm_common_mapping->kref); > + dev->archdata.mapping = exynos_drm_common_mapping; Ok, exynos_drm_common_mapping is shared with drivers using dev->archdata.mapping > + set_dma_ops(dev, &arm_iommu_ops); > + > + DRM_INFO("drm common mapping set to drm device.\n"); > +#endif > DRM_DEBUG_DRIVER("%s\n", __FILE__); > > exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls); > -- > 1.7.0.4
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c index c3ad87e..2e40ca8 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -276,6 +276,15 @@ static struct drm_driver exynos_drm_driver = { static int exynos_drm_platform_probe(struct platform_device *pdev) { +#ifdef CONFIG_EXYNOS_IOMMU + struct device *dev = &pdev->dev; + + kref_get(&exynos_drm_common_mapping->kref); + dev->archdata.mapping = exynos_drm_common_mapping; + set_dma_ops(dev, &arm_iommu_ops); + + DRM_INFO("drm common mapping set to drm device.\n"); +#endif DRM_DEBUG_DRIVER("%s\n", __FILE__); exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
This patch sets the common mapping created during drm init, to the drm device's archdata. The dma_ops of drm device is set as arm_iommu_ops. The common mapping is shared across all the drm devices which ensures that any buffer allocated with drm is accessible by drm-fimd or drm-hdmi or both. Signed-off-by: Prathyush K <prathyush.k@samsung.com> --- drivers/gpu/drm/exynos/exynos_drm_drv.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-)