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    SubjectRe: [PATCHv4 8/8] gpu: host1x: Register DRM dummy device
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    Am Freitag, den 21.12.2012, 13:39 +0200 schrieb Terje Bergstrom:
    > Register a dummy device for tegradrm, and provide a getter to
    > access the device.
    >
    > Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
    > ---
    [...]
    > diff --git a/drivers/gpu/host1x/drm.c b/drivers/gpu/host1x/drm.c
    > new file mode 100644
    > index 0000000..eaaaeed
    > --- /dev/null
    > +++ b/drivers/gpu/host1x/drm.c
    > @@ -0,0 +1,51 @@
    > +/*
    > + * Tegra host1x driver DRM dummy device
    > + *
    > + * Copyright (c) 2012, NVIDIA Corporation.
    > + *
    > + * This program is free software; you can redistribute it and/or modify it
    > + * under the terms and conditions of the GNU General Public License,
    > + * version 2, as published by the Free Software Foundation.
    > + *
    > + * This program is distributed in the hope it will be useful, but WITHOUT
    > + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
    > + * more details.
    > + *
    > + * You should have received a copy of the GNU General Public License
    > + * along with this program. If not, see <http://www.gnu.org/licenses/>.
    > + */
    > +
    > +#include <linux/platform_device.h>
    > +#include <linux/dma-mapping.h>
    > +#include <linux/module.h>
    > +#include "drm.h"
    > +#include "dev.h"
    > +
    > +int host1x_register_drm_device(struct host1x *host1x)
    > +{
    > + struct platform_device *drm_device;
    > +
    > + drm_device = platform_device_register_simple("tegradrm", -1, NULL, 0);
    > + if (!drm_device)
    > + return -ENOMEM;
    > + dma_set_coherent_mask(&drm_device->dev, DMA_BIT_MASK(32));
    > +
    This might not be necessary once we move the allocator to host1x.

    > + host1x->drm_device = drm_device;
    > + return 0;
    > +}
    > +EXPORT_SYMBOL(host1x_register_drm_device);
    > +
    > +void host1x_unregister_drm_device(struct host1x *host1x)
    > +{
    > + if (host1x->drm_device)
    > + platform_device_unregister(host1x->drm_device);
    > +}
    > +EXPORT_SYMBOL(host1x_unregister_drm_device);
    > +
    > +struct platform_device *host1x_drm_device(struct platform_device *pdev)
    > +{
    > + struct host1x *host = platform_get_drvdata(pdev);
    > + return host->drm_device;
    > +}
    > +EXPORT_SYMBOL(host1x_drm_device);
    This should be called host1x_get_drm_device






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