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drm/amdgpu: fetch default VDDC curve voltages (v2)

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Ask the SMU for the default VDDC curve voltage values.  This
properly reports the VDDC values in the OD interface.

v2: only update if the original values are 0

Bug: https://gitlab.freedesktop.org/drm/amd/issues/1020
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 5.5.x
This commit is contained in:
Alex Deucher 2020-01-25 13:30:45 -05:00
parent 93c5f1f66c
commit 0531aa6eb3
1 changed files with 49 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
drivers/gpu/drm/amd/powerplay/navi10_ppt.c
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@ -121,6 +121,8 @@ static struct smu_11_0_cmn2aisc_mapping navi10_message_map[SMU_MSG_MAX_COUNT] =
MSG_MAP(ArmD3, PPSMC_MSG_ArmD3),
MSG_MAP(DAL_DISABLE_DUMMY_PSTATE_CHANGE,PPSMC_MSG_DALDisableDummyPstateChange),
MSG_MAP(DAL_ENABLE_DUMMY_PSTATE_CHANGE, PPSMC_MSG_DALEnableDummyPstateChange),
MSG_MAP(GetVoltageByDpm, PPSMC_MSG_GetVoltageByDpm),
MSG_MAP(GetVoltageByDpmOverdrive, PPSMC_MSG_GetVoltageByDpmOverdrive),
};
static struct smu_11_0_cmn2aisc_mapping navi10_clk_map[SMU_CLK_COUNT] = {
@ -1934,6 +1936,28 @@ static int navi10_od_setting_check_range(struct smu_11_0_overdrive_table *od_tab
return 0;
}
static int navi10_overdrive_get_gfx_clk_base_voltage(struct smu_context *smu,
uint16_t *voltage,
uint32_t freq)
{
uint32_t param = (freq & 0xFFFF) | (PPCLK_GFXCLK << 16);
uint32_t value = 0;
int ret;
ret = smu_send_smc_msg_with_param(smu,
SMU_MSG_GetVoltageByDpm,
param);
if (ret) {
pr_err("[GetBaseVoltage] failed to get GFXCLK AVFS voltage from SMU!");
return ret;
}
smu_read_smc_arg(smu, &value);
*voltage = (uint16_t)value;
return 0;
}
static int navi10_setup_od_limits(struct smu_context *smu) {
struct smu_11_0_overdrive_table *overdrive_table = NULL;
struct smu_11_0_powerplay_table *powerplay_table = NULL;
@ -1960,16 +1984,40 @@ static int navi10_set_default_od_settings(struct smu_context *smu, bool initiali
if (ret)
return ret;
od_table = (OverDriveTable_t *)smu->smu_table.overdrive_table;
if (initialize) {
ret = navi10_setup_od_limits(smu);
if (ret) {
pr_err("Failed to retrieve board OD limits\n");
return ret;
}
if (od_table) {
if (!od_table->GfxclkVolt1) {
ret = navi10_overdrive_get_gfx_clk_base_voltage(smu,
&od_table->GfxclkVolt1,
od_table->GfxclkFreq1);
if (ret)
od_table->GfxclkVolt1 = 0;
}
if (!od_table->GfxclkVolt2) {
ret = navi10_overdrive_get_gfx_clk_base_voltage(smu,
&od_table->GfxclkVolt2,
od_table->GfxclkFreq2);
if (ret)
od_table->GfxclkVolt2 = 0;
}
if (!od_table->GfxclkVolt3) {
ret = navi10_overdrive_get_gfx_clk_base_voltage(smu,
&od_table->GfxclkVolt3,
od_table->GfxclkFreq3);
if (ret)
od_table->GfxclkVolt3 = 0;
}
}
}
od_table = (OverDriveTable_t *)smu->smu_table.overdrive_table;
if (od_table) {
navi10_dump_od_table(od_table);
}