diff options
| author | Qiang Ma <maqianga@uniontech.com> | 2024-01-31 10:57:03 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-02-07 18:01:10 +0300 |
| commit | aeaf3e6cf84282500b6fa03621b0c225ce1af18a (patch) | |
| tree | caa4319c5765e9a3756e78e4e1a400534e17b111 /drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | |
| parent | 39a82d304b635a65cb949203719a698fa2fe2009 (diff) | |
| download | linux-aeaf3e6cf84282500b6fa03621b0c225ce1af18a.tar.xz | |
drm/amdgpu: Clear the hotplug interrupt ack bit before hpd initialization
Problem:
The computer in the bios initialization process, unplug the HDMI display,
wait until the system up, plug in the HDMI display, did not enter the
hotplug interrupt function, the display is not bright.
Fix:
After the above problem occurs, and the hpd ack interrupt bit is 1,
the interrupt should be cleared during hpd_init initialization so that
when the driver is ready, it can respond to the hpd interrupt normally.
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/dce_v10_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c index 587ee632a3b8..221af054d874 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c @@ -52,6 +52,7 @@ static void dce_v10_0_set_display_funcs(struct amdgpu_device *adev); static void dce_v10_0_set_irq_funcs(struct amdgpu_device *adev); +static void dce_v10_0_hpd_int_ack(struct amdgpu_device *adev, int hpd); static const u32 crtc_offsets[] = { CRTC0_REGISTER_OFFSET, @@ -364,6 +365,7 @@ static void dce_v10_0_hpd_init(struct amdgpu_device *adev) AMDGPU_HPD_DISCONNECT_INT_DELAY_IN_MS); WREG32(mmDC_HPD_TOGGLE_FILT_CNTL + hpd_offsets[amdgpu_connector->hpd.hpd], tmp); + dce_v10_0_hpd_int_ack(adev, amdgpu_connector->hpd.hpd); dce_v10_0_hpd_set_polarity(adev, amdgpu_connector->hpd.hpd); amdgpu_irq_get(adev, &adev->hpd_irq, amdgpu_connector->hpd.hpd); |