[PATCH 3.13 155/187] drm/radeon/dpm: handle voltage info fetching on hawaii

Kamal Mostafa
2014-09-15T22:15:55Z

From: Alex Deucher <alexander.deucher@amd.com>

commit 6b57f20cb5b708415fbab63847f8f8429b051af8 upstream.

Some hawaii cards use a different method to fetch the
voltage info from the vbios.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=74250

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/radeon/ci_dpm.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index ca13ab5..8bfab60 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -923,7 +923,18 @@ static void ci_get_leakage_voltages(struct radeon_device *rdev)
pi->vddc_leakage.count = 0;
pi->vddci_leakage.count = 0;

- if (radeon_atom_get_leakage_id_from_vbios(rdev, &leakage_id) == 0) {
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_EVV) {
+ for (i = 0; i < CISLANDS_MAX_LEAKAGE_COUNT; i++) {
+ virtual_voltage_id = ATOM_VIRTUAL_VOLTAGE_ID0 + i;
+ if (radeon_atom_get_voltage_evv(rdev, virtual_voltage_id, &vddc) != 0)
+ continue;
+ if (vddc != 0 && vddc != virtual_voltage_id) {
+ pi->vddc_leakage.actual_voltage[pi->vddc_leakage.count] = vddc;
+ pi->vddc_leakage.leakage_id[pi->vddc_leakage.count] = virtual_voltage_id;
+ pi->vddc_leakage.count++;
+ }
+ }
+ } else if (radeon_atom_get_leakage_id_from_vbios(rdev, &leakage_id) == 0) {
for (i = 0; i < CISLANDS_MAX_LEAKAGE_COUNT; i++) {
virtual_voltage_id = ATOM_VIRTUAL_VOLTAGE_ID0 + i;
if (radeon_atom_get_leakage_vddc_based_on_leakage_params(rdev, &vddc, &vddci,
--
1.9.1