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_v8_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_v8_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c index 05bcce23385e..5a5fcc45e452 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c @@ -265,6 +265,21 @@ static void dce_v8_0_hpd_set_polarity(struct amdgpu_device *adev, WREG32(mmDC_HPD1_INT_CONTROL + hpd_offsets[hpd], tmp); } +static void dce_v8_0_hpd_int_ack(struct amdgpu_device *adev, + int hpd) +{ + u32 tmp; + + if (hpd >= adev->mode_info.num_hpd) { + DRM_DEBUG("invalid hdp %d\n", hpd); + return; + } + + tmp = RREG32(mmDC_HPD1_INT_CONTROL + hpd_offsets[hpd]); + tmp |= DC_HPD1_INT_CONTROL__DC_HPD1_INT_ACK_MASK; + WREG32(mmDC_HPD1_INT_CONTROL + hpd_offsets[hpd], tmp); +} + /** * dce_v8_0_hpd_init - hpd setup callback. * @@ -304,6 +319,7 @@ static void dce_v8_0_hpd_init(struct amdgpu_device *adev) continue; } + dce_v8_0_hpd_int_ack(adev, amdgpu_connector->hpd.hpd); dce_v8_0_hpd_set_polarity(adev, amdgpu_connector->hpd.hpd); amdgpu_irq_get(adev, &adev->hpd_irq, amdgpu_connector->hpd.hpd); } @@ -3177,7 +3193,7 @@ static int dce_v8_0_hpd_irq(struct amdgpu_device *adev, struct amdgpu_irq_src *source, struct amdgpu_iv_entry *entry) { - uint32_t disp_int, mask, tmp; + uint32_t disp_int, mask; unsigned hpd; if (entry->src_data[0] >= adev->mode_info.num_hpd) { @@ -3190,9 +3206,7 @@ static int dce_v8_0_hpd_irq(struct amdgpu_device *adev, mask = interrupt_status_offsets[hpd].hpd; if (disp_int & mask) { - tmp = RREG32(mmDC_HPD1_INT_CONTROL + hpd_offsets[hpd]); - tmp |= DC_HPD1_INT_CONTROL__DC_HPD1_INT_ACK_MASK; - WREG32(mmDC_HPD1_INT_CONTROL + hpd_offsets[hpd], tmp); + dce_v8_0_hpd_int_ack(adev, hpd); schedule_delayed_work(&adev->hotplug_work, 0); DRM_DEBUG("IH: HPD%d\n", hpd + 1); } |