On 2/22/2024 5:42 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.c | 1 +
drivers/gpu/drm/i915/display/intel_display_types.h | 1 +
drivers/gpu/drm/i915/display/intel_vrr.c | 12 ++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 7 +++++++
4 files changed, 21 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 00ac65a14029..5994f7fcbb6a 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5321,6 +5321,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
PIPE_CONF_CHECK_I(vrr.flipline);
PIPE_CONF_CHECK_I(vrr.pipeline_full);
PIPE_CONF_CHECK_I(vrr.guardband);
+ PIPE_CONF_CHECK_BOOL(vrr.as_sdp_enable);
Need to add PIPE_CONF_CHECK_I(vrr.vsync_start/end).
}
#undef PIPE_CONF_CHECK_X
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 93b4b7dff1d0..7859e4baad4b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1416,6 +1416,7 @@ struct intel_crtc_state {
u16 flipline, vmin, vmax, guardband;
u8 as_sdp_mode;
bool as_sdp_enable;
+ 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 08e3ba69bd30..29ddf504d94b 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -150,6 +150,13 @@ 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));
Need to add trans_vrr_start/end also in vrr_get_config.
Make sure to read/write these only when we intend to send adaptive_sync sdp.
Regards,
Ankit
+
/*
* For XE_LPD+, we use guardband and pipeline override
* is deprecated.
@@ -273,8 +280,13 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state)
u32 trans_vrr_ctl;
trans_vrr_ctl = intel_de_read(dev_priv, TRANS_VRR_CTL(cpu_transcoder));
+ bool as_sdp_enabled =
+ intel_de_read(dev_priv,
+ HSW_TVIDEO_DIP_CTL(cpu_transcoder));
crtc_state->vrr.enable = trans_vrr_ctl & VRR_CTL_VRR_ENABLE;
+ crtc_state->vrr.as_sdp_enable =
+ as_sdp_enabled & VIDEO_DIP_ENABLE_ADAPTIVE_SYNC;
if (DISPLAY_VER(dev_priv) >= 13)
crtc_state->vrr.guardband =
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c02ea07af4c2..3e0853458ef4 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2007,7 +2007,9 @@
#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 +2089,11 @@
#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))
+
#define _TRANS_PUSH_A 0x60A70
#define _TRANS_PUSH_B 0x61A70
#define _TRANS_PUSH_C 0x62A70
