diff options
| author |   Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2022-08-18 16:41:55 -0700 |
|---|---|---|
| committer | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2022-08-25 14:53:54 -0700 |
| commit | c41aa0204d1c05edadc42e50fdba62784f5841bd (patch) | |
| tree | e0925cfa8c5226e128c0e1b81b17a202b822d84a /drivers/gpu/drm/i915/intel_pm.c | |
| parent | drm/i915: Extract wm latency adjustment to its own function (diff) | |
| download | linux-dev-c41aa0204d1c05edadc42e50fdba62784f5841bd.tar.xz linux-dev-c41aa0204d1c05edadc42e50fdba62784f5841bd.zip | |
drm/i915/mtl: memory latency data from LATENCY_LPX_LPY for WM
Since Xe LPD+, Memory latency data are in LATENCY_LPX_LPY registers
instead of GT driver mailbox.
v2: Use the extracted wm latency adjustment function(Matt)
v3: Use Odd/even for Latency fields(MattR)
Bspec: 64608
Cc: Matt Roper <matthew.d.roper@intel.com>
Original Author: Caz Yokoyama
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/<20220818234202.451742-15-radhakrishna.sripada@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a34a57708b20..401b4481a3ae 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2910,13 +2910,27 @@ static void intel_read_wm_latency(struct drm_i915_private *dev_priv, u16 wm[]) { struct intel_uncore *uncore = &dev_priv->uncore; + int max_level = ilk_wm_max_level(dev_priv); - if (DISPLAY_VER(dev_priv) >= 9) { + if (DISPLAY_VER(dev_priv) >= 14) { + u32 val; + + val = intel_uncore_read(uncore, MTL_LATENCY_LP0_LP1); + wm[0] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val); + wm[1] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val); + val = intel_uncore_read(uncore, MTL_LATENCY_LP2_LP3); + wm[2] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val); + wm[3] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val); + val = intel_uncore_read(uncore, MTL_LATENCY_LP4_LP5); + wm[4] = REG_FIELD_GET(MTL_LATENCY_LEVEL_EVEN_MASK, val); + wm[5] = REG_FIELD_GET(MTL_LATENCY_LEVEL_ODD_MASK, val); + + adjust_wm_latency(dev_priv, wm, max_level, 6); + } else if (DISPLAY_VER(dev_priv) >= 9) { int read_latency = DISPLAY_VER(dev_priv) >= 12 ? 3 : 2; + int mult = IS_DG2(dev_priv) ? 2 : 1; u32 val; int ret; - int max_level = ilk_wm_max_level(dev_priv); - int mult = IS_DG2(dev_priv) ? 2 : 1; /* read the first set of memory latencies[0:3] */ val = 0; /* data0 to be programmed to 0 for first set */ |