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drm/amd/pm: Fix incorrect power limit readback in smu11 if POWER_SOURCE_DC

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when smu->adev->pm.ac_power == 0, message parameter with bit 16 set is saved
 to smu->current_power_limit.

Fixes: 0cb4c62125 ("drm/amd/pm: correct power limit setting for SMU V11)"

Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Darren Powell 2021-08-20 22:08:07 -04:00 committed by Alex Deucher
parent 2d1ac1cbe5
commit 02f8aa9f2a
1 changed files with 5 additions and 4 deletions
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9
drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
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@ -984,6 +984,7 @@ int smu_v11_0_set_power_limit(struct smu_context *smu,
{
int power_src;
int ret = 0;
uint32_t limit_param;
if (limit_type != SMU_DEFAULT_PPT_LIMIT)
return -EINVAL;
@ -1006,10 +1007,10 @@ int smu_v11_0_set_power_limit(struct smu_context *smu,
* BIT 16-23: PowerSource
* BIT 0-15: PowerLimit
*/
limit &= 0xFFFF;
limit |= 0 << 24;
limit |= (power_src) << 16;
ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetPptLimit, limit, NULL);
limit_param = (limit & 0xFFFF);
limit_param |= 0 << 24;
limit_param |= (power_src) << 16;
ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_SetPptLimit, limit_param, NULL);
if (ret) {
dev_err(smu->adev->dev, "[%s] Set power limit Failed!\n", __func__);
return ret;