drm/amd/powerplay: Fix hardmins not being sent to SMU for RV

commit e2bf3723db563457c0abe4eaeedac25bbbbd1d76 upstream.

[Why]
DC uses these to raise the voltage as needed for higher dispclk/dppclk
and to ensure that we have enough bandwidth to drive the displays.

There's a bug preventing these from actuially sending messages since
it's checking the actual clock (which is 0) instead of the incoming
clock (which shouldn't be 0) when deciding to send the hardmin.

[How]
Check the clocks != 0 instead of the actual clocks.

Fixes: 9ed9203c3ee7 ("drm/amd/powerplay: rv dal-pplib interface refactor powerplay part")
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
index fed3fc4bb57a9f24fe01cfeb36eca5728b7ad9b8..6322e57893db245ded7d6d97092016383ac3d14c 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu10_hwmgr.c
@@ -209,8 +209,7 @@ static int smu10_set_min_deep_sleep_dcefclk(struct pp_hwmgr *hwmgr, uint32_t clo
 {
        struct smu10_hwmgr *smu10_data = (struct smu10_hwmgr *)(hwmgr->backend);
 
-       if (smu10_data->need_min_deep_sleep_dcefclk &&
-               smu10_data->deep_sleep_dcefclk != clock) {
+       if (clock && smu10_data->deep_sleep_dcefclk != clock) {
                smu10_data->deep_sleep_dcefclk = clock;
                smum_send_msg_to_smc_with_parameter(hwmgr,
                                        PPSMC_MSG_SetMinDeepSleepDcefclk,
@@ -223,8 +222,7 @@ static int smu10_set_hard_min_dcefclk_by_freq(struct pp_hwmgr *hwmgr, uint32_t c
 {
        struct smu10_hwmgr *smu10_data = (struct smu10_hwmgr *)(hwmgr->backend);
 
-       if (smu10_data->dcf_actual_hard_min_freq &&
-               smu10_data->dcf_actual_hard_min_freq != clock) {
+       if (clock && smu10_data->dcf_actual_hard_min_freq != clock) {
                smu10_data->dcf_actual_hard_min_freq = clock;
                smum_send_msg_to_smc_with_parameter(hwmgr,
                                        PPSMC_MSG_SetHardMinDcefclkByFreq,
@@ -237,8 +235,7 @@ static int smu10_set_hard_min_fclk_by_freq(struct pp_hwmgr *hwmgr, uint32_t cloc
 {
        struct smu10_hwmgr *smu10_data = (struct smu10_hwmgr *)(hwmgr->backend);
 
-       if (smu10_data->f_actual_hard_min_freq &&
-               smu10_data->f_actual_hard_min_freq != clock) {
+       if (clock && smu10_data->f_actual_hard_min_freq != clock) {
                smu10_data->f_actual_hard_min_freq = clock;
                smum_send_msg_to_smc_with_parameter(hwmgr,
                                        PPSMC_MSG_SetHardMinFclkByFreq,