On Lunarlake and onwards it is possible to generate PSR "frame change"
event using TRANS_PUSH mechanism. Implement function to enable this and
take PSR into account in intel_vrr_send_push.
v5: use intel_psr_use_trans_push for intel_vrr_psr_frame_change_enable
v4:
- use rmw when enabling/disabling transcoder
- set TRANS_PUSH_EN conditionally in intel_vrr_send_push
- do not call intel_vrr_send_push from intel_psr_trigger_frame_change
- do not enable using TRANS_PUSH mechanism for PSR "Frame Change"
v3:
- use rmw when enabling/disabling
- keep LNL_TRANS_PUSH_PSR_PR_EN set always on LunarLake and onwards
v2: use intel_vrr_trans_push_enabled_set_clear instead of rmw
Signed-off-by: Jouni Högander <jouni.hogan...@intel.com>
---
drivers/gpu/drm/i915/display/intel_crtc.c | 4 ++-
drivers/gpu/drm/i915/display/intel_psr.c | 11 +++++--
drivers/gpu/drm/i915/display/intel_vrr.c | 39 ++++++++++++++++-------
drivers/gpu/drm/i915/display/intel_vrr.h | 1 +
4 files changed, 40 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c
b/drivers/gpu/drm/i915/display/intel_crtc.c
index a187db6df2d3..5233970b95e5 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -723,7 +723,9 @@ void intel_pipe_update_end(struct intel_atomic_state *state,
* which would cause the next frame to terminate already at vmin
* vblank start instead of vmax vblank start.
*/
- if (!state->base.legacy_cursor_update)
+ if (!state->base.legacy_cursor_update ||
+ (intel_psr_use_trans_push(new_crtc_state) &&
+ !new_crtc_state->vrr.enable))
intel_vrr_send_push(NULL, new_crtc_state);
local_irq_enable();
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
b/drivers/gpu/drm/i915/display/intel_psr.c
index d7c19b053fcc..172b1070c7b7 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1950,6 +1950,9 @@ static void intel_psr_enable_source(struct intel_dp
*intel_dp,
intel_dmc_block_pkgc(display, intel_dp->psr.pipe, true);
intel_alpm_configure(intel_dp, crtc_state);
+
+ if (intel_psr_use_trans_push(crtc_state))
+ intel_vrr_psr_frame_change_enable(crtc_state);
}
static bool psr_interrupt_error_check(struct intel_dp *intel_dp)
@@ -2336,9 +2339,11 @@ void intel_psr_trigger_frame_change_event(struct
intel_dsb *dsb,
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);
+ if (!crtc_state->has_psr || DISPLAY_VER(display) >= 20)
+ return;
+
+ intel_de_write_dsb(display, dsb,
+ CURSURFLIVE(display, crtc->pipe), 0);
}
/**
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c
b/drivers/gpu/drm/i915/display/intel_vrr.c
index 3eed37f271b0..9db6127abeaa 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -10,6 +10,7 @@
#include "intel_display_regs.h"
#include "intel_display_types.h"
#include "intel_dp.h"
+#include "intel_psr.h"
#include "intel_vrr.h"
#include "intel_vrr_regs.h"
@@ -505,16 +506,23 @@ void intel_vrr_send_push(struct intel_dsb *dsb,
{
struct intel_display *display = to_intel_display(crtc_state);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+ u32 trans_push;
- if (!crtc_state->vrr.enable)
+ if (!crtc_state->vrr.enable && !intel_psr_use_trans_push(crtc_state))
return;
if (dsb)
intel_dsb_nonpost_start(dsb);
- intel_de_write_dsb(display, dsb,
- TRANS_PUSH(display, cpu_transcoder),
- TRANS_PUSH_EN | TRANS_PUSH_SEND);
+ trans_push = TRANS_PUSH_SEND;
+
+ if (crtc_state->vrr.enable)
+ trans_push |= TRANS_PUSH_EN;
+ if (intel_psr_use_trans_push(crtc_state))
+ trans_push |= LNL_TRANS_PUSH_PSR_PR_EN;
+
+ intel_de_write_dsb(display, dsb, TRANS_PUSH(display, cpu_transcoder),
+ trans_push);
if (dsb)
intel_dsb_nonpost_end(dsb);
@@ -609,9 +617,7 @@ void intel_vrr_enable(const struct intel_crtc_state
*crtc_state)
crtc_state->vrr.vmax - 1);
intel_de_write(display, TRANS_VRR_FLIPLINE(display, cpu_transcoder),
crtc_state->vrr.flipline - 1);
-
- intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
- TRANS_PUSH_EN);
+ intel_de_rmw(display, TRANS_PUSH(display, cpu_transcoder), 0,
TRANS_PUSH_EN);
if (!intel_vrr_always_use_vrr_tg(display)) {
intel_vrr_set_db_point_and_transmission_line(crtc_state);
@@ -627,6 +633,15 @@ void intel_vrr_enable(const struct intel_crtc_state
*crtc_state)
}
}
+void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state
*crtc_state)
+{
+ struct intel_display *display = to_intel_display(crtc_state);
+ enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+ intel_de_rmw(display, TRANS_VRR_CTL(display, cpu_transcoder), 0,
+ LNL_TRANS_PUSH_PSR_PR_EN);
+}
+
void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state)
{
struct intel_display *display = to_intel_display(old_crtc_state);
@@ -641,7 +656,8 @@ void intel_vrr_disable(const struct intel_crtc_state
*old_crtc_state)
intel_de_wait_for_clear(display,
TRANS_VRR_STATUS(display,
cpu_transcoder),
VRR_STATUS_VRR_EN_LIVE, 1000);
- intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), 0);
+ intel_de_rmw(display, TRANS_PUSH(display, cpu_transcoder),
+ TRANS_PUSH_EN, 0);
}
intel_vrr_set_fixed_rr_timings(old_crtc_state);
@@ -664,8 +680,8 @@ void intel_vrr_transcoder_enable(const struct
intel_crtc_state *crtc_state)
return;
}
- intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
- TRANS_PUSH_EN);
+ intel_de_rmw(display, TRANS_PUSH(display, cpu_transcoder),
+ 0, TRANS_PUSH_EN);
intel_vrr_set_db_point_and_transmission_line(crtc_state);
@@ -688,7 +704,8 @@ void intel_vrr_transcoder_disable(const struct
intel_crtc_state *crtc_state)
intel_de_wait_for_clear(display, TRANS_VRR_STATUS(display,
cpu_transcoder),
VRR_STATUS_VRR_EN_LIVE, 1000);
- intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), 0);
+ intel_de_rmw(display, TRANS_PUSH(display, cpu_transcoder),
+ TRANS_PUSH_EN, 0);
}
bool intel_vrr_is_fixed_rr(const struct intel_crtc_state *crtc_state)
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h
b/drivers/gpu/drm/i915/display/intel_vrr.h
index 38bf9996b883..6f815fd05c36 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -30,6 +30,7 @@ void intel_vrr_check_push_sent(struct intel_dsb *dsb,
const struct intel_crtc_state *crtc_state);
bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state);
void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
+void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state
*crtc_state);
void intel_vrr_get_config(struct intel_crtc_state *crtc_state);
int intel_vrr_vmax_vtotal(const struct intel_crtc_state *crtc_state);
int intel_vrr_vmin_vtotal(const struct intel_crtc_state *crtc_state);
--
2.43.0
