drm/radeon/kms: add dpm support for rv6xx (v3)

This adds dpm support for rv6xx asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching

Set radeon.dpm=1 to enable.

v2: remove duplicate line
v3: fix thermal interrupt check noticed by Jerome

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index 91bc5ab5b1e6..bf396a0f6a50 100644
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -676,3 +676,48 @@ bool r600_is_uvd_state(u32 class, u32 class2)
                 return true;
         return false;
 }
+
+int r600_set_thermal_temperature_range(struct radeon_device *rdev,
+                                       int min_temp, int max_temp)
+{
+        int low_temp = 0 * 1000;
+        int high_temp = 255 * 1000;
+
+        if (low_temp < min_temp)
+                low_temp = min_temp;
+        if (high_temp > max_temp)
+                high_temp = max_temp;
+        if (high_temp < low_temp) {
+                DRM_ERROR("invalid thermal range: %d - %d\n", low_temp, high_temp);
+                return -EINVAL;
+        }
+
+        WREG32_P(CG_THERMAL_INT, DIG_THERM_INTH(high_temp / 1000), ~DIG_THERM_INTH_MASK);
+        WREG32_P(CG_THERMAL_INT, DIG_THERM_INTL(low_temp / 1000), ~DIG_THERM_INTL_MASK);
+        WREG32_P(CG_THERMAL_CTRL, DIG_THERM_DPM(high_temp / 1000), ~DIG_THERM_DPM_MASK);
+
+        rdev->pm.dpm.thermal.min_temp = low_temp;
+        rdev->pm.dpm.thermal.max_temp = high_temp;
+
+        return 0;
+}
+
+bool r600_is_internal_thermal_sensor(enum radeon_int_thermal_type sensor)
+{
+        switch (sensor) {
+        case THERMAL_TYPE_RV6XX:
+        case THERMAL_TYPE_RV770:
+        case THERMAL_TYPE_EVERGREEN:
+        case THERMAL_TYPE_SUMO:
+        case THERMAL_TYPE_NI:
+                return true;
+        case THERMAL_TYPE_ADT7473_WITH_INTERNAL:
+        case THERMAL_TYPE_EMC2103_WITH_INTERNAL:
+                return false; /* need special handling */
+        case THERMAL_TYPE_NONE:
+        case THERMAL_TYPE_EXTERNAL:
+        case THERMAL_TYPE_EXTERNAL_GPIO:
+        default:
+                return false;
+        }
+}