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drm/vmwgfx: Make overlay code not require fifo at init time 

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Thomas Hellstrom 2012-11-09 12:26:12 +00:00 committed by Dave Airlie
parent ba723fe8b7
commit dcb5227155
1 changed files with 12 additions and 9 deletions
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21
drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
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@ -35,6 +35,7 @@
#include "svga_escape.h"
#define VMW_MAX_NUM_STREAMS 1
#define VMW_OVERLAY_CAP_MASK (SVGA_FIFO_CAP_VIDEO | SVGA_FIFO_CAP_ESCAPE)
struct vmw_stream {
struct vmw_dma_buffer *buf;
@ -449,6 +450,14 @@ int vmw_overlay_pause_all(struct vmw_private *dev_priv)
return 0;
}
static bool vmw_overlay_available(const struct vmw_private *dev_priv)
{
return (dev_priv->overlay_priv != NULL &&
((dev_priv->fifo.capabilities & VMW_OVERLAY_CAP_MASK) ==
VMW_OVERLAY_CAP_MASK));
}
int vmw_overlay_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
@ -461,7 +470,7 @@ int vmw_overlay_ioctl(struct drm_device *dev, void *data,
struct vmw_resource *res;
int ret;
if (!overlay)
if (!vmw_overlay_available(dev_priv))
return -ENOSYS;
ret = vmw_user_stream_lookup(dev_priv, tfile, &arg->stream_id, &res);
@ -492,7 +501,7 @@ out_unlock:
int vmw_overlay_num_overlays(struct vmw_private *dev_priv)
{
if (!dev_priv->overlay_priv)
if (!vmw_overlay_available(dev_priv))
return 0;
return VMW_MAX_NUM_STREAMS;
@ -503,7 +512,7 @@ int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv)
struct vmw_overlay *overlay = dev_priv->overlay_priv;
int i, k;
if (!overlay)
if (!vmw_overlay_available(dev_priv))
return 0;
mutex_lock(&overlay->mutex);
@ -569,12 +578,6 @@ int vmw_overlay_init(struct vmw_private *dev_priv)
if (dev_priv->overlay_priv)
return -EINVAL;
if (!(dev_priv->fifo.capabilities & SVGA_FIFO_CAP_VIDEO) &&
(dev_priv->fifo.capabilities & SVGA_FIFO_CAP_ESCAPE)) {
DRM_INFO("hardware doesn't support overlays\n");
return -ENOSYS;
}
overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
if (!overlay)
return -ENOMEM;