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drm/amd/pm: enhance the real response for smu message (v2)

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The user prefers to know the real response value from C2PMSG 90 register
which is written by firmware not -EIO.

v2: return C2PMSG 90 value

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2021-01-08 16:27:15 +08:00 committed by Alex Deucher
parent 1acc080213
commit 11db224b34
1 changed files with 9 additions and 5 deletions
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14
drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
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@ -92,7 +92,7 @@ static int smu_cmn_wait_for_response(struct smu_context *smu)
for (i = 0; i < timeout; i++) {
cur_value = RREG32_SOC15_NO_KIQ(MP1, 0, mmMP1_SMN_C2PMSG_90);
if ((cur_value & MP1_C2PMSG_90__CONTENT_MASK) != 0)
return cur_value == 0x1 ? 0 : -EIO;
return cur_value;
udelay(1);
}
@ -101,7 +101,7 @@ static int smu_cmn_wait_for_response(struct smu_context *smu)
if (i == timeout)
return -ETIME;
return RREG32_SOC15_NO_KIQ(MP1, 0, mmMP1_SMN_C2PMSG_90) == 0x1 ? 0 : -EIO;
return RREG32_SOC15_NO_KIQ(MP1, 0, mmMP1_SMN_C2PMSG_90);
}
int smu_cmn_send_smc_msg_with_param(struct smu_context *smu,
@ -123,9 +123,11 @@ int smu_cmn_send_smc_msg_with_param(struct smu_context *smu,
mutex_lock(&smu->message_lock);
ret = smu_cmn_wait_for_response(smu);
if (ret) {
if (ret != 0x1) {
dev_err(adev->dev, "Msg issuing pre-check failed and "
"SMU may be not in the right state!\n");
if (ret != -ETIME)
ret = -EIO;
goto out;
}
@ -136,9 +138,11 @@ int smu_cmn_send_smc_msg_with_param(struct smu_context *smu,
smu_cmn_send_msg_without_waiting(smu, (uint16_t)index);
ret = smu_cmn_wait_for_response(smu);
if (ret) {
if (ret != 0x1) {
dev_err(adev->dev, "failed send message: %10s (%d) \tparam: 0x%08x response %#x\n",
smu_get_message_name(smu, msg), index, param, ret);
smu_get_message_name(smu, msg), index, param, ret);
if (ret != -ETIME)
ret = -EIO;
goto out;
}