drm/radeon/kms: rv6xx+ thermal sensor fixes

[pandora-kernel.git] / drivers / gpu / drm / radeon / evergreen.c

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 677af91..5a11fec 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -97,26 +97,29 @@ u32 evergreen_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
 }
 
 /* get temperature in millidegrees */
-u32 evergreen_get_temp(struct radeon_device *rdev)
+int evergreen_get_temp(struct radeon_device *rdev)
 {
        u32 temp = (RREG32(CG_MULT_THERMAL_STATUS) & ASIC_T_MASK) >>
                ASIC_T_SHIFT;
        u32 actual_temp = 0;
 
-       if ((temp >> 10) & 1)
-               actual_temp = 0;
-       else if ((temp >> 9) & 1)
+       if (temp & 0x400)
+               actual_temp = -256;
+       else if (temp & 0x200)
                actual_temp = 255;
-       else
-               actual_temp = (temp >> 1) & 0xff;
+       else if (temp & 0x100) {
+               actual_temp = temp & 0x1ff;
+               actual_temp |= ~0x1ff;
+       } else
+               actual_temp = temp & 0xff;
 
-       return actual_temp * 1000;
+       return (actual_temp * 1000) / 2;
 }
 
-u32 sumo_get_temp(struct radeon_device *rdev)
+int sumo_get_temp(struct radeon_device *rdev)
 {
        u32 temp = RREG32(CG_THERMAL_STATUS) & 0xff;
-       u32 actual_temp = (temp >> 1) & 0xff;
+       int actual_temp = temp - 49;
 
        return actual_temp * 1000;
 }