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drm/radeon/kms: split MSI check into a separate function

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This makes it easier to add quirks for certain systems.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-10-25 14:58:49 -04:00 committed by Dave Airlie
parent cd2b89e7e8
commit 8f6c25c59b
1 changed files with 23 additions and 6 deletions
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29
drivers/gpu/drm/radeon/radeon_irq_kms.c
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@ -108,6 +108,27 @@ void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
radeon_irq_set(rdev);
}
static bool radeon_msi_ok(struct radeon_device *rdev)
{
/* RV370/RV380 was first asic with MSI support */
if (rdev->family < CHIP_RV380)
return false;
/* MSIs don't work on AGP */
if (rdev->flags & RADEON_IS_AGP)
return false;
if (rdev->flags & RADEON_IS_IGP) {
/* APUs work fine with MSIs */
if (rdev->family >= CHIP_PALM)
return true;
/* lots of IGPs have problems with MSIs */
return false;
}
return true;
}
int radeon_irq_kms_init(struct radeon_device *rdev)
{
int i;
@ -124,12 +145,8 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
}
/* enable msi */
rdev->msi_enabled = 0;
/* MSIs don't seem to work reliably on all IGP
* chips. Disable MSI on them for now.
*/
if ((rdev->family >= CHIP_RV380) &&
((!(rdev->flags & RADEON_IS_IGP)) || (rdev->family >= CHIP_PALM)) &&
(!(rdev->flags & RADEON_IS_AGP))) {
if (radeon_msi_ok(rdev)) {
int ret = pci_enable_msi(rdev->pdev);
if (!ret) {
rdev->msi_enabled = 1;