[PATCH 17/20] drm/i915/display: Use fixed rr timings in intel_set_transcoder_timings_lrr()

[Ankit Nautiyal]

Update the intel_set_transcoder_timings_lrr() function to use
fixed refresh rate timings for platforms which always use
VRR timing generator.

Since the vrr.guardband can now change for platforms that always use the
VRR Timing Generator, and it is unsafe to reprogram the guardband on the
fly, move the guardband and pipeline_full checks from the pure !fastboot
path and add a check for intel_vrr_always_use_vrr_tg().

This will prevent reprogramming the vrr.guardband without a full modeset
for platforms that always use the VRR Timing Generator. However, this will
disrupt LRR functionality for these platforms.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 8 ++++++++
 drivers/gpu/drm/i915/display/intel_vrr.c     | 1 -
 drivers/gpu/drm/i915/display/intel_vrr.h     | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 4a0083fdfb05..cebb61d4f226 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2768,6 +2768,9 @@ static void intel_set_transcoder_timings_lrr(const struct intel_crtc_state *crtc
 	intel_de_write(display, TRANS_VTOTAL(display, cpu_transcoder),
 		       VACTIVE(crtc_vdisplay - 1) |
 		       VTOTAL(crtc_vtotal - 1));
+
+	intel_vrr_set_fixed_rr_timings(crtc_state);
+	intel_vrr_transcoder_enable(crtc_state);
 }
 
 static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state)
@@ -5394,6 +5397,11 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 		PIPE_CONF_CHECK_BOOL(cmrr.enable);
 	}
 
+	if (!fastset || intel_vrr_always_use_vrr_tg(display))
+		PIPE_CONF_CHECK_I(vrr.pipeline_full);
+		PIPE_CONF_CHECK_I(vrr.guardband);
+	}
+
 #undef PIPE_CONF_CHECK_X
 #undef PIPE_CONF_CHECK_I
 #undef PIPE_CONF_CHECK_LLI
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 77b24bbdc20f..804d451f2512 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -284,7 +284,6 @@ int intel_vrr_fixed_rr_flipline(const struct intel_crtc_state *crtc_state)
 	return intel_vrr_fixed_rr_vtotal(crtc_state);
 }
 
-static
 void intel_vrr_set_fixed_rr_timings(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(crtc_state);
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index c4ee8a758e19..d857633bc02c 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -37,5 +37,6 @@ int intel_vrr_vmin_vblank_start(const struct intel_crtc_state *crtc_state);
 int intel_vrr_vblank_delay(const struct intel_crtc_state *crtc_state);
 void intel_vrr_transcoder_enable(const struct intel_crtc_state *crtc_state);
 void intel_vrr_transcoder_disable(const struct intel_crtc_state *crtc_state);
+void intel_vrr_set_fixed_rr_timings(const struct intel_crtc_state *crtc_state);
 
 #endif /* __INTEL_VRR_H__ */
-- 
2.45.2