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[SRU,Noble,6/6] drm/i915/display: force qgv check after the hw state readout

Message ID 20240625065307.11681-7-hui.wang@canonical.com
State New
Headers show
Series RFIM and SAGV Linux Support for G10 models | expand

Commit Message

Hui Wang June 25, 2024, 6:53 a.m. UTC 
From: Vinod Govindapillai <vinod.govindapillai@intel.com>

BugLink: https://bugs.launchpad.net/bugs/2070158

The current intel_bw_atomic_check do not check the possbility
of a sagv configuration change after the hw state readout.
Hence cannot update the sagv configuration until some other
relevant changes like data rates, number of planes etc. happen.
Introduce a flag to force qgv check in such cases.

Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240405113533.338553-7-vinod.govindapillai@intel.com
(cherry picked from commit aaba7a95ddffbf609261a8ba6c5d344b7cc6dca9)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
---
 drivers/gpu/drm/i915/display/intel_bw.c | 8 ++++++--
 drivers/gpu/drm/i915/display/intel_bw.h | 6 ++++++
 2 files changed, 12 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
index a3ecb302ec14..972ea887e232 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.c
+++ b/drivers/gpu/drm/i915/display/intel_bw.c
@@ -755,6 +755,7 @@  void intel_bw_crtc_update(struct intel_bw_state *bw_state,
 		intel_bw_crtc_data_rate(crtc_state);
 	bw_state->num_active_planes[crtc->pipe] =
 		intel_bw_crtc_num_active_planes(crtc_state);
+	bw_state->force_check_qgv = true;
 
 	drm_dbg_kms(&i915->drm, "pipe %c data rate %u num active planes %u\n",
 		    pipe_name(crtc->pipe),
@@ -1339,8 +1340,9 @@  int intel_bw_atomic_check(struct intel_atomic_state *state)
 	new_bw_state = intel_atomic_get_new_bw_state(state);
 
 	if (new_bw_state &&
-	    intel_can_enable_sagv(i915, old_bw_state) !=
-	    intel_can_enable_sagv(i915, new_bw_state))
+	    (intel_can_enable_sagv(i915, old_bw_state) !=
+	     intel_can_enable_sagv(i915, new_bw_state) ||
+	     new_bw_state->force_check_qgv))
 		changed = true;
 
 	/*
@@ -1354,6 +1356,8 @@  int intel_bw_atomic_check(struct intel_atomic_state *state)
 	if (ret)
 		return ret;
 
+	new_bw_state->force_check_qgv = false;
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h
index 59cb4fc5db76..4d951a599de6 100644
--- a/drivers/gpu/drm/i915/display/intel_bw.h
+++ b/drivers/gpu/drm/i915/display/intel_bw.h
@@ -47,6 +47,12 @@  struct intel_bw_state {
 	 */
 	u16 qgv_points_mask;
 
+	/*
+	 * Flag to force the QGV comparison in atomic check right after the
+	 * hw state readout
+	 */
+	bool force_check_qgv;
+
 	int min_cdclk[I915_MAX_PIPES];
 	unsigned int data_rate[I915_MAX_PIPES];
 	u8 num_active_planes[I915_MAX_PIPES];