From 50682ee63fa3480b0541d0a311239189634b68ab Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Wed, 9 Aug 2017 13:52:43 -0700 Subject: [PATCH] drm/i915/gen10+: use the SKL code for reading WM latencies Gen 10 should use the exact same code as Gen 9, so change the check to take this into consideration, and also assume that future platforms will run this code. Also add a MISSING_CASE(), just in case we do something wrong, instead of silently failing. Cc: Mahesh Kumar Cc: Maarten Lankhorst Signed-off-by: Paulo Zanoni Signed-off-by: Rodrigo Vivi Reviewed-by: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/20170809205248.11917-1-rodrigo.vivi@intel.com --- drivers/gpu/drm/i915/intel_pm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 4a75b673b85f..04697faee4e6 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2778,7 +2778,7 @@ hsw_compute_linetime_wm(const struct intel_crtc_state *cstate) static void intel_read_wm_latency(struct drm_i915_private *dev_priv, uint16_t wm[8]) { - if (IS_GEN9(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 9) { uint32_t val; int ret, i; int level, max_level = ilk_wm_max_level(dev_priv); @@ -2838,7 +2838,7 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv, } /* - * WaWmMemoryReadLatency:skl,glk + * WaWmMemoryReadLatency:skl+,glk * * punit doesn't take into account the read latency so we need * to add 2us to the various latency levels we retrieve from the @@ -2877,6 +2877,8 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv, wm[0] = 7; wm[1] = (mltr >> MLTR_WM1_SHIFT) & ILK_SRLT_MASK; wm[2] = (mltr >> MLTR_WM2_SHIFT) & ILK_SRLT_MASK; + } else { + MISSING_CASE(INTEL_DEVID(dev_priv)); } } -- 2.20.1