From: Manasi Navare <manasi.d.navare@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v4 13/18] drm/i915/display/vrr: Set IGNORE_MSA_PAR state in DP Sink
Date: Wed, 13 Jan 2021 14:09:30 -0800 [thread overview]
Message-ID: <20210113220935.4151-14-manasi.d.navare@intel.com> (raw)
In-Reply-To: <20210113220935.4151-1-manasi.d.navare@intel.com>
If VRR is enabled, the sink should ignore MSA parameters
and regenerate incoming video stream without depending
on these parameters. Hence set the MSA_TIMING_PAR_IGNORE_EN
bit if VRR is enabled.
Reset this bit on VRR disable.
v2:
* ACtually set the dpcd msa ignore bit (Ville)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 19 +++++++++++++++++++
.../drm/i915/display/intel_dp_link_training.c | 2 +-
2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 16b55f49aa54..e2961d8fac99 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3556,6 +3556,22 @@ i915_reg_t dp_tp_status_reg(struct intel_encoder *encoder,
return DP_TP_STATUS(encoder->port);
}
+static void intel_dp_sink_set_msa_timing_par_ignore_state(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state,
+ bool enable)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+
+ if (!crtc_state->vrr.enable)
+ return;
+
+ if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_DOWNSPREAD_CTRL,
+ enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0) <= 0)
+ drm_dbg_kms(&i915->drm,
+ "Failed to set MSA_TIMING_PAR_IGNORE %s in the sink\n",
+ enable ? "enable" : "disable");
+}
+
static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
@@ -4354,6 +4370,9 @@ static void intel_disable_ddi_dp(struct intel_atomic_state *state,
/* Disable the decompression in DP Sink */
intel_dp_sink_set_decompression_state(intel_dp, old_crtc_state,
false);
+ /* Disable Ignore_MSA bit in DP Sink */
+ intel_dp_sink_set_msa_timing_par_ignore_state(intel_dp, old_crtc_state,
+ false);
}
static void intel_disable_ddi_hdmi(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index d8c6d7054d11..e4e6d18ef0a2 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -434,7 +434,7 @@ intel_dp_prepare_link_train(struct intel_dp *intel_dp,
drm_dp_dpcd_write(&intel_dp->aux, DP_LINK_RATE_SET,
&rate_select, 1);
- link_config[0] = 0;
+ link_config[0] = crtc_state->vrr.enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0;
link_config[1] = DP_SET_ANSI_8B10B;
drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2);
--
2.19.1
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next prev parent reply other threads:[~2021-01-13 22:05 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-13 22:09 [Intel-gfx] [PATCH v4 00/18] VRR/Adaptive Sync Enabling on DP/eDP for TGL+ Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 01/18] drm/i915/display/vrr: Create VRR file and add VRR capability check Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 02/18] drm/i915/display/dp: Attach and set drm connector VRR property Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 03/18] drm/i915: Store framestart_delay in dev_priv Manasi Navare
2021-01-21 22:32 ` Navare, Manasi
2021-01-22 12:20 ` Ville Syrjälä
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 04/18] drm/i915: Extract intel_mode_vblank_start() Manasi Navare
2021-01-21 22:36 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 05/18] drm/i915: Extract intel_crtc_scanlines_since_frame_timestamp() Manasi Navare
2021-01-21 22:52 ` Navare, Manasi
2021-01-21 23:07 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 06/18] drm/i915/display/dp: Compute VRR state in atomic_check Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 07/18] drm/i915/display/dp: Do not enable PSR if VRR is enabled Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 08/18] drm/i915/display: VRR + DRRS cannot be enabled together Manasi Navare
2021-01-14 17:15 ` Ville Syrjälä
2021-01-21 22:58 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 09/18] drm/i915: Rename VRR_CTL reg fields Manasi Navare
2021-01-21 22:59 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 10/18] drm/i915/display/vrr: Configure and enable VRR in modeset enable Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 11/18] drm/i915/display/vrr: Send VRR push to flip the frame Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 12/18] drm/i915/display/vrr: Disable VRR in modeset disable path Manasi Navare
2021-01-13 22:09 ` Manasi Navare [this message]
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 14/18] drm/i915/display: Add HW state readout for VRR Manasi Navare
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 15/18] drm/i915/display: Helpers for VRR vblank min and max start Manasi Navare
2021-01-19 19:07 ` Ville Syrjälä
2021-01-21 23:00 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 16/18] drm/i915: Add vrr state dump Manasi Navare
2021-01-21 23:02 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 17/18] drm/i915: Fix vblank timestamps with VRR Manasi Navare
2021-01-21 23:05 ` Navare, Manasi
2021-01-13 22:09 ` [Intel-gfx] [PATCH v4 18/18] drm/i915: Fix vblank evasion with vrr Manasi Navare
2021-01-21 23:06 ` Navare, Manasi
2021-01-13 22:34 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for VRR/Adaptive Sync Enabling on DP/eDP for TGL+ Patchwork
2021-01-13 22:36 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-01-13 23:05 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
2021-01-19 18:59 ` [Intel-gfx] [PATCH v4 00/18] " Ville Syrjälä
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