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drm: Add support for platform devices to register as DRM devices

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Allow platform devices without PCI resources to be DRM devices.

[airlied: fixup warnings with dev pointers]

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jordan Crouse
2010-05-27 13:40:25 -06:00
committed by Dave Airlie
parent 01d73a6967
commit dcdb167402
17 changed files with 401 additions and 171 deletions
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69
drivers/gpu/drm/drm_ioctl.c
View File

@@ -132,32 +132,57 @@ static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
struct drm_master *master = file_priv->master;
int len;
if (master->unique != NULL)
return -EBUSY;
if (drm_core_check_feature(dev, DRIVER_USE_PLATFORM_DEVICE)) {
master->unique_len = 10 + strlen(dev->platformdev->name);
master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
master->unique_len = 40;
master->unique_size = master->unique_len;
master->unique = kmalloc(master->unique_size, GFP_KERNEL);
if (master->unique == NULL)
return -ENOMEM;
if (master->unique == NULL)
return -ENOMEM;
len = snprintf(master->unique, master->unique_len, "pci:%04x:%02x:%02x.%d",
drm_get_pci_domain(dev),
dev->pdev->bus->number,
PCI_SLOT(dev->pdev->devfn),
PCI_FUNC(dev->pdev->devfn));
if (len >= master->unique_len)
DRM_ERROR("buffer overflow");
else
master->unique_len = len;
len = snprintf(master->unique, master->unique_len,
"platform:%s", dev->platformdev->name);
dev->devname = kmalloc(strlen(dev->driver->pci_driver.name) +
master->unique_len + 2, GFP_KERNEL);
if (dev->devname == NULL)
return -ENOMEM;
if (len > master->unique_len)
DRM_ERROR("Unique buffer overflowed\n");
sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
master->unique);
dev->devname =
kmalloc(strlen(dev->platformdev->name) +
master->unique_len + 2, GFP_KERNEL);
if (dev->devname == NULL)
return -ENOMEM;
sprintf(dev->devname, "%s@%s", dev->platformdev->name,
master->unique);
} else {
master->unique_len = 40;
master->unique_size = master->unique_len;
master->unique = kmalloc(master->unique_size, GFP_KERNEL);
if (master->unique == NULL)
return -ENOMEM;
len = snprintf(master->unique, master->unique_len,
"pci:%04x:%02x:%02x.%d",
drm_get_pci_domain(dev),
dev->pdev->bus->number,
PCI_SLOT(dev->pdev->devfn),
PCI_FUNC(dev->pdev->devfn));
if (len >= master->unique_len)
DRM_ERROR("buffer overflow");
else
master->unique_len = len;
dev->devname =
kmalloc(strlen(dev->driver->pci_driver.name) +
master->unique_len + 2, GFP_KERNEL);
if (dev->devname == NULL)
return -ENOMEM;
sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name,
master->unique);
}
return 0;
}