For every commit the dependent condition for LOBF is checked
and accordingly update has_lobf flag which will be used
to update the ALPM_CTL register during commit.
v1: Initial version.
v2: Avoid reading h/w register without has_lobf check. [Jani]
v3: Update LOBF in post plane update instead of separate function. [Jouni]
v4:
- Add lobf disable print. [Jouni]
- Simplify condition check for enabling/disabling lobf. [Jouni]
Signed-off-by: Animesh Manna <animesh.ma...@intel.com>
---
drivers/gpu/drm/i915/display/intel_alpm.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c
b/drivers/gpu/drm/i915/display/intel_alpm.c
index aae2c322baa7..7ab29c5fef38 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.c
+++ b/drivers/gpu/drm/i915/display/intel_alpm.c
@@ -360,6 +360,8 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp,
if (crtc_state->has_lobf) {
alpm_ctl |= ALPM_CTL_LOBF_ENABLE;
drm_dbg_kms(display->drm, "Link off between frames (LOBF)
enabled\n");
+ } else {
+ drm_dbg_kms(display->drm, "Link off between frames (LOBF)
disabled\n");
}
alpm_ctl |=
ALPM_CTL_ALPM_ENTRY_CHECK(intel_dp->alpm_parameters.check_entry_lines);
@@ -380,9 +382,12 @@ void intel_alpm_post_plane_update(struct
intel_atomic_state *state,
struct intel_display *display = to_intel_display(state);
const struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
+ const struct intel_crtc_state *old_crtc_state =
+ intel_atomic_get_old_crtc_state(state, crtc);
struct intel_encoder *encoder;
- if (!crtc_state->has_lobf && !crtc_state->has_psr)
+ if (!(crtc_state->has_lobf != old_crtc_state->has_lobf) &&
+ !crtc_state->has_psr)
return;
for_each_intel_encoder_mask(display->drm, encoder,
--
2.29.0
