drm/radeon/kms: enable hpd support
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>
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 2b534c5..b7baf16 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -289,6 +289,7 @@
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 @@
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: