drm/radeon/kms: add support for internal thermal sensor on SI
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 39c64df..3e91429 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -28,6 +28,25 @@
#include "sid.h"
#include "atom.h"
+/* get temperature in millidegrees */
+int si_get_temp(struct radeon_device *rdev)
+{
+ u32 temp;
+ int actual_temp = 0;
+
+ temp = (RREG32(CG_MULT_THERMAL_STATUS) & CTF_TEMP_MASK) >>
+ CTF_TEMP_SHIFT;
+
+ if (temp & 0x200)
+ actual_temp = 255;
+ else
+ actual_temp = temp & 0x1ff;
+
+ actual_temp = (actual_temp * 1000);
+
+ return actual_temp;
+}
+
/* watermark setup */
static u32 dce6_line_buffer_adjust(struct radeon_device *rdev,
struct radeon_crtc *radeon_crtc,