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drm/radeon/kms: enable hpd support

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This enabled interrupt driven hpd support for all
radeon chips.  Assuming the hpd pin is wired up
correctly, the driver will generate uevents on
digital monitor connect and disconnect and retrain
DP monitors automatically.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2009-12-04 16:56:37 -05:00
committed by Dave Airlie
parent 429770b3e3
commit d4877cf229
10 changed files with 98 additions and 10 deletions
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9
drivers/gpu/drm/radeon/r100.c
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@@ -289,6 +289,7 @@ static inline uint32_t r100_irq_ack(struct radeon_device *rdev)
int r100_irq_process(struct radeon_device *rdev)
{
uint32_t status, msi_rearm;
bool queue_hotplug = false;
status = r100_irq_ack(rdev);
if (!status) {
@@ -310,13 +311,17 @@ int r100_irq_process(struct radeon_device *rdev)
drm_handle_vblank(rdev->ddev, 1);
}
if (status & RADEON_FP_DETECT_STAT) {
DRM_INFO("HPD1\n");
queue_hotplug = true;
DRM_DEBUG("HPD1\n");
}
if (status & RADEON_FP2_DETECT_STAT) {
DRM_INFO("HPD2\n");
queue_hotplug = true;
DRM_DEBUG("HPD2\n");
}
status = r100_irq_ack(rdev);
}
if (queue_hotplug)
queue_work(rdev->wq, &rdev->hotplug_work);
if (rdev->msi_enabled) {
switch (rdev->family) {
case CHIP_RS400: