Commit fa27fa48 authored by Jouni Högander's avatar Jouni Högander
Browse files

drm/i915/psr: Add function for triggering "Frame Change" event 



Add new function to trigger "Frame Change" event for ensuring we are waking
up before vblank evasion.

v2: dsb as a first parameter

Signed-off-by: default avatarJouni Högander <jouni.hogander@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250213064804.2077127-12-jouni.hogander@intel.com
parent 801d827d

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

+22 −0
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ 
#include "intel_psr.h"

#include "intel_psr_regs.h"

#include "intel_snps_phy.h"

#include "intel_vblank.h"

#include "skl_universal_plane.h"



/**
@@ -2289,6 +2290,27 @@ bool intel_psr_needs_block_dc_vblank(const struct intel_crtc_state *crtc_state) 
	return false;

}



/**

 * intel_psr_trigger_frame_change_event - Trigger "Frame Change" event

 * @dsb: DSB context

 * @state: the atomic state

 * @crtc: the CRTC

 *

 * Generate PSR "Frame Change" event.

 */

void intel_psr_trigger_frame_change_event(struct intel_dsb *dsb,

					  struct intel_atomic_state *state,

					  struct intel_crtc *crtc)

{

	const struct intel_crtc_state *crtc_state =

		intel_pre_commit_crtc_state(state, crtc);

	struct intel_display *display = to_intel_display(crtc);



	if (crtc_state->has_psr)

		intel_de_write_dsb(display, dsb,

				   CURSURFLIVE(display, crtc->pipe), 0);

}



static u32 man_trk_ctl_enable_bit_get(struct intel_display *display)

{

	struct drm_i915_private *dev_priv = to_i915(display->drm);

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

+3 −0
Original line number Diff line number Diff line
@@ -64,6 +64,9 @@ bool intel_psr_link_ok(struct intel_dp *intel_dp); 


void intel_psr_lock(const struct intel_crtc_state *crtc_state);

void intel_psr_unlock(const struct intel_crtc_state *crtc_state);

void intel_psr_trigger_frame_change_event(struct intel_dsb *dsb,

					  struct intel_atomic_state *state,

					  struct intel_crtc *crtc);

void intel_psr_connector_debugfs_add(struct intel_connector *connector);

void intel_psr_debugfs_register(struct intel_display *display);