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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-06-06 22:15:00 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-09-27 18:46:22 +0300 |
| commit | b4283282c9538958f7ee23c5af3bab3e4e94d553 (patch) | |
| tree | c85de5d190d48bdf4d2ed5d09a20c336df939c94 | |
| parent | 7678e089bd18b4dd61478ce728f01fd5239e97ff (diff) | |
| download | linux-b4283282c9538958f7ee23c5af3bab3e4e94d553.tar.xz | |
drm/i915: Introduce skl_watermark_max_latency()
The DSB code will want to know the maximum PkgC latency
it has to contend with. Add a helper to expose that
information.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-16-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/display/skl_watermark.c | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/skl_watermark.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index 64a122d3c9c0..c1a90e058ffd 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.c +++ b/drivers/gpu/drm/i915/display/skl_watermark.c @@ -3721,3 +3721,17 @@ void skl_watermark_debugfs_register(struct drm_i915_private *i915) debugfs_create_file("i915_sagv_status", 0444, minor->debugfs_root, i915, &intel_sagv_status_fops); } + +unsigned int skl_watermark_max_latency(struct drm_i915_private *i915) +{ + int level; + + for (level = i915->display.wm.num_levels - 1; level >= 0; level--) { + unsigned int latency = skl_wm_latency(i915, level, NULL); + + if (latency) + return latency; + } + + return 0; +} diff --git a/drivers/gpu/drm/i915/display/skl_watermark.h b/drivers/gpu/drm/i915/display/skl_watermark.h index f91a3d4ddc07..edb61e33df83 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.h +++ b/drivers/gpu/drm/i915/display/skl_watermark.h @@ -46,6 +46,8 @@ void skl_watermark_ipc_update(struct drm_i915_private *i915); bool skl_watermark_ipc_enabled(struct drm_i915_private *i915); void skl_watermark_debugfs_register(struct drm_i915_private *i915); +unsigned int skl_watermark_max_latency(struct drm_i915_private *i915); + void skl_wm_init(struct drm_i915_private *i915); struct intel_dbuf_state { |