drm/radeon: dpm fixes for asrock systems

- bapm seems to cause CPU stuck messages so disable it.
- nb dpm seems to prevent GPU dpm from getting enabled, so
disable it.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=85107

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index 1dd976f..9b42001 100644 (file)
--- a/drivers/gpu/drm/radeon/kv_dpm.c
+++ b/drivers/gpu/drm/radeon/kv_dpm.c
@@ -2725,7 +2725,11 @@ int kv_dpm_init(struct radeon_device *rdev)
 
         pi->sram_end = SMC_RAM_END;
 
-       pi->enable_nb_dpm = true;
+       /* Enabling nb dpm on an asrock system prevents dpm from working */
+       if (rdev->pdev->subsystem_vendor == 0x1849)
+               pi->enable_nb_dpm = false;
+       else
+               pi->enable_nb_dpm = true;
 
        pi->caps_power_containment = true;
        pi->caps_cac = true;
@@ -2740,10 +2744,19 @@ int kv_dpm_init(struct radeon_device *rdev)
        pi->caps_sclk_ds = true;
        pi->enable_auto_thermal_throttling = true;
        pi->disable_nb_ps3_in_battery = false;
-       if (radeon_bapm == 0)
+       if (radeon_bapm == -1) {
+               /* There are stability issues reported on with
+                * bapm enabled on an asrock system.
+                */
+               if (rdev->pdev->subsystem_vendor == 0x1849)
+                       pi->bapm_enable = false;
+               else
+                       pi->bapm_enable = true;
+       } else if (radeon_bapm == 0) {
                pi->bapm_enable = false;
-       else
+       } else {
                pi->bapm_enable = true;
+       }
        pi->voltage_drop_t = 0;
        pi->caps_sclk_throttle_low_notification = false;
        pi->caps_fps = false; /* true? */