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drm/amd/display: not skip hpd irq for bw alloc mode

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[WHY]
Driver only process hpd irq when a branch device or when
the link is established. It would cause some irq for bw_alloc
mode of dp tunneling are ignored.

[HOW]
Driver should process hpd irq if bw_alloc and dp tunneling
are enabled.

Reviewed-by: Cruise Hung <cruise.hung@amd.com>
Signed-off-by: Peichen Huang <PeiChen.Huang@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Peichen Huang 2025-09-30 13:39:02 +08:00 committed by Alex Deucher
parent b9a21a379a
commit b466ad5574
2 changed files with 18 additions and 5 deletions
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19
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia_bw.c
View File

@ -273,17 +273,28 @@ bool link_dpia_enable_usb4_dp_bw_alloc_mode(struct dc_link *link)
*/
void link_dp_dpia_handle_bw_alloc_status(struct dc_link *link, uint8_t status)
{
link->dpia_bw_alloc_config.estimated_bw = get_estimated_bw(link);
if (status & DP_TUNNELING_BW_REQUEST_SUCCEEDED) {
DC_LOG_DEBUG("%s: BW Allocation request succeeded on link(%d)",
__func__, link->link_index);
} else if (status & DP_TUNNELING_BW_REQUEST_FAILED) {
}
if (status & DP_TUNNELING_BW_REQUEST_FAILED) {
DC_LOG_DEBUG("%s: BW Allocation request failed on link(%d) allocated/estimated BW=%d",
__func__, link->link_index, link->dpia_bw_alloc_config.estimated_bw);
link_dpia_send_bw_alloc_request(link, link->dpia_bw_alloc_config.estimated_bw);
} else if (status & DP_TUNNELING_ESTIMATED_BW_CHANGED) {
}
if (status & DP_TUNNELING_BW_ALLOC_CAP_CHANGED) {
link->dpia_bw_alloc_config.bw_granularity = get_bw_granularity(link);
DC_LOG_DEBUG("%s: Granularity changed on link(%d) new granularity=%d",
__func__, link->link_index, link->dpia_bw_alloc_config.bw_granularity);
}
if (status & DP_TUNNELING_ESTIMATED_BW_CHANGED) {
link->dpia_bw_alloc_config.estimated_bw = get_estimated_bw(link);
DC_LOG_DEBUG("%s: Estimated BW changed on link(%d) new estimated BW=%d",
__func__, link->link_index, link->dpia_bw_alloc_config.estimated_bw);
}

4
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
View File

@ -398,10 +398,12 @@ bool dp_should_allow_hpd_rx_irq(const struct dc_link *link)
* Don't handle RX IRQ unless one of following is met:
* 1) The link is established (cur_link_settings != unknown)
* 2) We know we're dealing with a branch device, SST or MST
* 3) The link is bw_alloc enabled.
*/
if ((link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||
is_dp_branch_device(link))
is_dp_branch_device(link) ||
link->dpia_bw_alloc_config.bw_alloc_enabled)
return true;
return false;