From 78e418d0ea7f74bca0c2312281a28de831ae8edf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Mon, 31 Oct 2022 15:56:59 +0200 Subject: [PATCH] drm/i915: Stop claiming cs timestamp frquency on gen2/3 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Link: https://patchwork.freedesktop.org/patch/msgid/20221031135703.14670-3-ville.syrjala@linux.intel.com Reviewed-by: Lionel Landwerlin --- 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)