diff options
| author |   James Ausmus <james.ausmus@intel.com> | 2019-10-09 10:23:15 -0700 |
|---|---|---|
| committer |   Lucas De Marchi <lucas.demarchi@intel.com> | 2019-10-10 11:00:47 -0700 |
| commit | da80f04792fc0dddcc44201cb4ee96cb011755b6 (patch) | |
| tree | 9b00f89e9a08fb4c0548fe9ddf7226598bce1abf /drivers/gpu/drm/i915/intel_pm.c | |
| parent | drm/i915: Move SAGV block time to dev_priv (diff) | |
| download | linux-dev-da80f04792fc0dddcc44201cb4ee96cb011755b6.tar.xz linux-dev-da80f04792fc0dddcc44201cb4ee96cb011755b6.zip | |
drm/i915/tgl: Read SAGV block time from PCODE
Starting from TGL, we now need to read the SAGV block time via a PCODE
mailbox, rather than having a static value.
BSpec: 49326
v2: Fix up pcode val data type (Ville), tighten variable scope (Ville)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: James Ausmus <james.ausmus@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004221449.1317-2-james.ausmus@intel.com
Link: https://patchwork.freedesktop.org/patch/msgid/20191009172315.11004-2-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index f00e64f9320c..b306e2338f5a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3641,7 +3641,20 @@ intel_has_sagv(struct drm_i915_private *dev_priv) static void skl_setup_sagv_block_time(struct drm_i915_private *dev_priv) { - if (IS_GEN(dev_priv, 11)) { + if (INTEL_GEN(dev_priv) >= 12) { + u32 val = 0; + int ret; + + ret = sandybridge_pcode_read(dev_priv, + GEN12_PCODE_READ_SAGV_BLOCK_TIME_US, + &val, NULL); + if (!ret) { + dev_priv->sagv_block_time_us = val; + return; + } + + DRM_DEBUG_DRIVER("Couldn't read SAGV block time!\n"); + } else if (IS_GEN(dev_priv, 11)) { dev_priv->sagv_block_time_us = 10; return; } else if (IS_GEN(dev_priv, 10)) { |