Commit b4283282 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

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: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-16-ville.syrjala@linux.intel.com


Reviewed-by: default avatarUma Shankar <uma.shankar@intel.com>
parent 7678e089

drivers/gpu/drm/i915/display/skl_watermark.c

+14 −0
Original line number Diff line number Diff line
@@ -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;

}

drivers/gpu/drm/i915/display/skl_watermark.h

+2 −0
Original line number Diff line number Diff line
@@ -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 {