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authorAlex Deucher <alexdeucher@gmail.com>2010-07-02 12:58:16 -0400
committerDave Airlie <airlied@redhat.com>2010-08-02 10:00:00 +1000
commit21a8122ad38c60d73fe5dc51051414c3564d174a (patch)
treeb20f2bb711e3230fdc3195042c901596de4677e2 /drivers/gpu/drm/radeon/r600.c
parentd7a2952f1adec32018a78ec0c2f504dd72f38e25 (diff)
drm/radeon/kms: add support for internal thermal sensors (v3)
rv6xx/rv7xx/evergreen families supported; older asics did not have an internal thermal sensor. Note, not all oems use the internal thermal sensor, so it's only exposed in cases where it is used. Note also, that most laptops use an oem specific ACPI solution for GPU thermal information rather than using the internal thermal sensor directly. v2: export millidegrees celsius, use hwmon device properly. v3: fix Kconfig Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
-rw-r--r--drivers/gpu/drm/radeon/r600.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index a73a6e17588..15fe6c21403 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -92,6 +92,21 @@ void r600_gpu_init(struct radeon_device *rdev);
void r600_fini(struct radeon_device *rdev);
void r600_irq_disable(struct radeon_device *rdev);
+/* get temperature in millidegrees */
+u32 rv6xx_get_temp(struct radeon_device *rdev)
+{
+ u32 temp = (RREG32(CG_THERMAL_STATUS) & ASIC_T_MASK) >>
+ ASIC_T_SHIFT;
+ u32 actual_temp = 0;
+
+ if ((temp >> 7) & 1)
+ actual_temp = 0;
+ else
+ actual_temp = (temp >> 1) & 0xff;
+
+ return actual_temp * 1000;
+}
+
void r600_pm_get_dynpm_state(struct radeon_device *rdev)
{
int i;