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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
This commit is contained in:
Alex Deucher 2014-10-26 15:10:21 -04:00
parent c9cb57fe8b
commit 72b3f9183e
1 changed files with 16 additions and 3 deletions
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19
drivers/gpu/drm/radeon/kv_dpm.c
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@ -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? */