Hwmon reads the energy/power consumed by discrete soc,
i.e. energy/power includes the power drawn from non-gfx discrete
components
This test uses the power consumed by GT to validate RC6
power consumption.
Skip comparison of power for discrete graphics
TODO : measure power of GT in discrete graphics and modify the
condition
v2: update commit message (Anshuman)
Signed-off-by: Riana Tauro <riana.tauro@xxxxxxxxx>
Reviewed-by: Anshuman Gupta <anshuman.gupta@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/selftest_rc6.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gt/selftest_rc6.c b/drivers/gpu/drm/i915/gt/selftest_rc6.c
index 682f2fe67b3a..47165f490449 100644
--- a/drivers/gpu/drm/i915/gt/selftest_rc6.c
+++ b/drivers/gpu/drm/i915/gt/selftest_rc6.c
@@ -107,7 +107,15 @@ int live_rc6_manual(void *arg)
ktime_to_ns(dt));
pr_info("GPU consumed %llduW in RC0 and %llduW in RC6\n",
rc0_power, rc6_power);
- if (2 * rc6_power > rc0_power) {
+
+ /*
+ * Condition valid for integrated graphics
+ * On discrete graphics, hwwmon reads the energy/power from
+ * discrete SOC that includes non-gfx components.
+ * TODO : Measure power of GT for discrete graphics and
+ * modify the condition
+ */
+ if (!IS_DGFX(gt->i915) && (2 * rc6_power > rc0_power)) {
pr_err("GPU leaked energy while in RC6!\n");
err = -EINVAL;
goto out_unlock;
--
2.40.0
