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drm/radeon/kms: add support for msi

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Try to enable msi on chips that support it.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2009-10-16 12:21:24 -04:00
committed by Dave Airlie
parent ebbe1cb936
commit 3e5cb98dfe
5 changed files with 49 additions and 2 deletions
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9
drivers/gpu/drm/radeon/radeon_irq_kms.c
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@@ -92,6 +92,13 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
if (r) {
return r;
}
/* enable msi */
rdev->msi_enabled = 0;
if (rdev->family >= CHIP_RV380) {
int ret = pci_enable_msi(rdev->pdev);
if (!ret)
rdev->msi_enabled = 1;
}
drm_irq_install(rdev->ddev);
rdev->irq.installed = true;
DRM_INFO("radeon: irq initialized.\n");
@@ -103,5 +110,7 @@ void radeon_irq_kms_fini(struct radeon_device *rdev)
if (rdev->irq.installed) {
rdev->irq.installed = false;
drm_irq_uninstall(rdev->ddev);
if (rdev->msi_enabled)
pci_disable_msi(rdev->pdev);
}
}