diff options
author | Jordan Crouse <jcrouse@codeaurora.org> | 2010-05-27 13:40:25 -0600 |
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committer | Dave Airlie <airlied@redhat.com> | 2010-06-01 10:07:39 +1000 |
commit | dcdb167402cbdca1d021bdfa5f63995ee0a79317 (patch) | |
tree | 3cd0ab1189d972b59daaaf863f518d7b94d2de7a /drivers/gpu/drm/drm_ioctl.c | |
parent | 01d73a6967f12fe6c4bbde1834a9fe662264a2eb (diff) | |
download | linux-dcdb167402cbdca1d021bdfa5f63995ee0a79317.tar.bz2 |
drm: Add support for platform devices to register as DRM devices
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>
Diffstat (limited to 'drivers/gpu/drm/drm_ioctl.c')
-rw-r--r-- | drivers/gpu/drm/drm_ioctl.c | 71 |
1 files changed, 48 insertions, 23 deletions
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 9b9ff46c2378..76d3d18056dd 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -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; - - 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 (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); + + if (master->unique == NULL) + return -ENOMEM; + + len = snprintf(master->unique, master->unique_len, + "platform:%s", dev->platformdev->name); + + if (len > master->unique_len) + DRM_ERROR("Unique buffer overflowed\n"); + + 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; - 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); - dev->devname = kmalloc(strlen(dev->driver->pci_driver.name) + - master->unique_len + 2, GFP_KERNEL); - if (dev->devname == NULL) - return -ENOMEM; + if (dev->devname == NULL) + return -ENOMEM; - sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, - master->unique); + sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, + master->unique); + } return 0; } |