drm/radeon/kms/r6xx+: voltage fixes

0xff01 is not an actual voltage value, but a flag
for the driver.  If the power state as that value,
skip setting the voltage.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 7162b7b..445af79 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -140,11 +140,17 @@ void evergreen_pm_misc(struct radeon_device *rdev)
        struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
 
        if (voltage->type == VOLTAGE_SW) {
+               /* 0xff01 is a flag rather then an actual voltage */
+               if (voltage->voltage == 0xff01)
+                       return;
                if (voltage->voltage && (voltage->voltage != rdev->pm.current_vddc)) {
                        radeon_atom_set_voltage(rdev, voltage->voltage, SET_VOLTAGE_TYPE_ASIC_VDDC);
                        rdev->pm.current_vddc = voltage->voltage;
                        DRM_DEBUG("Setting: vddc: %d\n", voltage->voltage);
                }
+               /* 0xff01 is a flag rather then an actual voltage */
+               if (voltage->vddci == 0xff01)
+                       return;
                if (voltage->vddci && (voltage->vddci != rdev->pm.current_vddci)) {
                        radeon_atom_set_voltage(rdev, voltage->vddci, SET_VOLTAGE_TYPE_ASIC_VDDCI);
                        rdev->pm.current_vddci = voltage->vddci;

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index dc9fde3..f79d2cc 100644 (file)
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -590,6 +590,9 @@ void r600_pm_misc(struct radeon_device *rdev)
        struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
 
        if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+               /* 0xff01 is a flag rather then an actual voltage */
+               if (voltage->voltage == 0xff01)
+                       return;
                if (voltage->voltage != rdev->pm.current_vddc) {
                        radeon_atom_set_voltage(rdev, voltage->voltage, SET_VOLTAGE_TYPE_ASIC_VDDC);
                        rdev->pm.current_vddc = voltage->voltage;

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index fa62a50..1e725d9 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -2607,6 +2607,10 @@ void radeon_atom_set_voltage(struct radeon_device *rdev, u16 voltage_level, u8 v
        if (!atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev))
                return;
 
+       /* 0xff01 is a flag rather then an actual voltage */
+       if (voltage_level == 0xff01)
+               return;
+
        switch (crev) {
        case 1:
                args.v1.ucVoltageType = voltage_type;

diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index ef8a5ba..6f508ff 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -105,6 +105,9 @@ void rv770_pm_misc(struct radeon_device *rdev)
        struct radeon_voltage *voltage = &ps->clock_info[req_cm_idx].voltage;
 
        if ((voltage->type == VOLTAGE_SW) && voltage->voltage) {
+               /* 0xff01 is a flag rather then an actual voltage */
+               if (voltage->voltage == 0xff01)
+                       return;
                if (voltage->voltage != rdev->pm.current_vddc) {
                        radeon_atom_set_voltage(rdev, voltage->voltage, SET_VOLTAGE_TYPE_ASIC_VDDC);
                        rdev->pm.current_vddc = voltage->voltage;