[Intel-gfx] [PATCH 2/6] drm/i915: Stop claiming cs timestamp frquency on gen2/3

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Gen2/3 have no TIMESTAMP registers to sample so no point in thinking
we have any frequency for it either.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
index ebb7a5b3e87c..23a27e49b898 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
@@ -139,7 +139,7 @@ static u32 g4x_read_clock_frequency(struct intel_uncore *uncore)
 	return 1000000000 / 1024;
 }
 
-static u32 gen2_read_clock_frequency(struct intel_uncore *uncore)
+static u32 gen4_read_clock_frequency(struct intel_uncore *uncore)
 {
 	/*
 	 * PRMs say:
@@ -163,8 +163,10 @@ static u32 read_clock_frequency(struct intel_uncore *uncore)
 		return gen5_read_clock_frequency(uncore);
 	else if (IS_G4X(uncore->i915))
 		return g4x_read_clock_frequency(uncore);
+	else if (GRAPHICS_VER(uncore->i915) == 4)
+		return gen4_read_clock_frequency(uncore);
 	else
-		return gen2_read_clock_frequency(uncore);
+		return 0;
 }
 
 void intel_gt_init_clock_frequency(struct intel_gt *gt)
-- 
2.37.4