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drm/amd/display: use a more lax vblank enable policy for older ASICs

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Ideally, we want to drop the legacy vblank enable for older ASICs. This
should be possible now, since we can now specify how many frames we need
to wait before disabling vblanking instead of being forced to either
choose between no delay (which can still be buggy) and
drm_vblank_offdelay (which is much longer by default than is required on
AMD hardware).

Suggested-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240822161856.174600-4-hamza.mahfooz@amd.com
This commit is contained in:
Hamza Mahfooz 2024-08-22 11:58:22 -04:00
parent e45b6716de
commit 58a261bfc9
No known key found for this signature in database
GPG Key ID: 3D6797D6EE6FCAE2
1 changed files with 6 additions and 8 deletions
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14
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -8244,10 +8244,9 @@ static void manage_dm_interrupts(struct amdgpu_device *adev,
if (acrtc_state) {
if (amdgpu_ip_version(adev, DCE_HWIP, 0) <
IP_VERSION(3, 5, 0)) {
drm_crtc_vblank_on(&acrtc->base);
} else if (acrtc_state->stream->link->psr_settings.psr_version <
DC_PSR_VERSION_UNSUPPORTED) {
IP_VERSION(3, 5, 0) ||
acrtc_state->stream->link->psr_settings.psr_version <
DC_PSR_VERSION_UNSUPPORTED) {
timing = &acrtc_state->stream->timing;
/* at least 2 frames */
@ -8257,14 +8256,13 @@ static void manage_dm_interrupts(struct amdgpu_device *adev,
timing->pix_clk_100hz);
config.offdelay_ms = offdelay ?: 30;
drm_crtc_vblank_on_config(&acrtc->base,
&config);
} else {
config.disable_immediate = true;
drm_crtc_vblank_on_config(&acrtc->base,
&config);
}
drm_crtc_vblank_on_config(&acrtc->base,
&config);
amdgpu_irq_get(
adev,
&adev->pageflip_irq,