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drm/amd/display: Retry Replay residency

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[Why]
Because sometime DMUB GPINT will time out,
 it will cause we return 0 as residency number.

[How]
Retry to avoid this happened.

Reviewed-by: Robin Chen <robin.chen@amd.com>
Signed-off-by: ChunTao Tso <ChunTao.Tso@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
ChunTao Tso 2024-08-08 17:25:55 +08:00 committed by Alex Deucher
parent 6692982582
commit e565b6b0b5
1 changed files with 14 additions and 4 deletions
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18
drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c
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@ -12,6 +12,8 @@
#define MAX_PIPES 6
#define GPINT_RETRY_NUM 20
static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3};
static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5};
@ -222,6 +224,7 @@ static void dmub_replay_residency(struct dmub_replay *dmub, uint8_t panel_inst,
uint32_t *residency, const bool is_start, enum pr_residency_mode mode)
{
uint16_t param = (uint16_t)(panel_inst << 8);
uint32_t i = 0;
switch (mode) {
case PR_RESIDENCY_MODE_PHY:
@ -249,10 +252,17 @@ static void dmub_replay_residency(struct dmub_replay *dmub, uint8_t panel_inst,
if (is_start)
param |= REPLAY_RESIDENCY_ENABLE;
// Send gpint command and wait for ack
if (!dc_wake_and_execute_gpint(dmub->ctx, DMUB_GPINT__REPLAY_RESIDENCY, param,
residency, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY))
*residency = 0;
for (i = 0; i < GPINT_RETRY_NUM; i++) {
// Send gpint command and wait for ack
if (dc_wake_and_execute_gpint(dmub->ctx, DMUB_GPINT__REPLAY_RESIDENCY, param,
residency, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY))
return;
udelay(100);
}
// it means gpint retry many times
*residency = 0;
}
/*