On 2/16/2024 7:50 PM, Mitul Golani wrote:
Compute vrr_vsync_start/end which sets the position
for hardware to send the Vsync at a fixed position
relative to the end of the Vblank.
--v2:
- Update, VSYNC_START/END macros to VRR_VSYNC_START/END.(Ankit)
- Update bit fields of VRR_VSYNC_START/END.(Ankit)
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display_types.h | 1 +
drivers/gpu/drm/i915/display/intel_vrr.c | 7 +++++++
drivers/gpu/drm/i915/i915_reg.h | 11 +++++++++++
3 files changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index a6991bc3f07b..015ed846b896 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1414,6 +1414,7 @@ struct intel_crtc_state {
bool enable, in_range;
u8 pipeline_full;
u16 flipline, vmin, vmax, guardband;
+ u32 vsync_end, vsync_start;
} vrr;
/* Stream Splitter for eDP MSO */
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 5d905f932cb4..2fa0004d00c7 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -149,6 +149,13 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
crtc_state->vrr.flipline = crtc_state->vrr.vmin + 1;
+ crtc_state->vrr.vsync_start =
+ (crtc_state->hw.adjusted_mode.crtc_vtotal -
+ VRR_VSYNC_START(crtc_state->hw.adjusted_mode.vsync_start));
+ crtc_state->vrr.vsync_end =
+ (crtc_state->hw.adjusted_mode.crtc_vtotal -
+ (VRR_VSYNC_END(crtc_state->hw.adjusted_mode.vsync_end) >> 16));
+
/*
* For XE_LPD+, we use guardband and pipeline override
* is deprecated.
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c02ea07af4c2..f73e95b18819 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1955,6 +1955,10 @@
#define VSYNC_END(vsync_end) REG_FIELD_PREP(VSYNC_END_MASK, (vsync_end))
#define VSYNC_START_MASK REG_GENMASK(15, 0)
#define VSYNC_START(vsync_start) REG_FIELD_PREP(VSYNC_START_MASK, (vsync_start))
+#define VSYNC_END_MASK REG_GENMASK(31, 16)
+#define VSYNC_END(vsync_end) REG_FIELD_PREP(VSYNC_END_MASK, (vsync_end))
+#define VSYNC_START_MASK REG_GENMASK(15, 0)
+#define VSYNC_START(vsync_start) REG_FIELD_PREP(VSYNC_START_MASK, (vsync_start))
I think this is typo, we really dont need to touch these.
#define _TRANS_EXITLINE_A 0x60018
#define _PIPEASRC 0x6001c
#define PIPESRC_WIDTH_MASK REG_GENMASK(31, 16)
@@ -2007,7 +2011,9 @@
#define _TRANS_VRR_CTL_B 0x61420
#define _TRANS_VRR_CTL_C 0x62420
#define _TRANS_VRR_CTL_D 0x63420
+#define _TRANS_VRR_VSYNC_A 0x60078
#define TRANS_VRR_CTL(trans) _MMIO_TRANS2(trans, _TRANS_VRR_CTL_A)
+#define TRANS_VRR_VSYNC(trans) _MMIO_TRANS2(trans, _TRANS_VRR_VSYNC_A)
#define VRR_CTL_VRR_ENABLE REG_BIT(31)
#define VRR_CTL_IGN_MAX_SHIFT REG_BIT(30)
#define VRR_CTL_FLIP_LINE_EN REG_BIT(29)
@@ -2087,6 +2093,11 @@
#define TRANS_VRR_STATUS2(trans) _MMIO_TRANS2(trans, _TRANS_VRR_STATUS2_A)
#define VRR_STATUS2_VERT_LN_CNT_MASK REG_GENMASK(19, 0)
+#define VRR_VSYNC_END_MASK REG_GENMASK(28, 16)
+#define VRR_VSYNC_END(vsync_end) REG_FIELD_PREP(VSYNC_END_MASK, (vsync_end))
+#define VRR_VSYNC_START_MASK REG_GENMASK(12, 0)
+#define VRR_VSYNC_START(vsync_start) REG_FIELD_PREP(VSYNC_START_MASK, (vsync_start))
Here too, we need to use the correct VRR_VSYNC_STAR/END_MASK
Regards,
Ankit
+
#define _TRANS_PUSH_A 0x60A70
#define _TRANS_PUSH_B 0x61A70
#define _TRANS_PUSH_C 0x62A70
