TRANS_DP2_CTL register is programmed to enable panel replay from source
and sink is enabled through panel replay dpcd configuration address.
Bspec: 1407940617
v1: Initial version.
v2:
- Use pr_* flags instead psr_* flags. [Jouni]
- Remove intel_dp_is_edp check as edp1.5 also has panel replay. [Jouni]
v3: Cover letter updated and selective fetch condition check is added
before updating its bit in PSR2_MAN_TRK_CTL register. [Jouni]
v4: Selective fetch related PSR2_MAN_TRK_CTL programmming dropped. [Jouni]
Note: Initial plan is to enable panel replay in full-screen live active
frame update mode. In a incremental approach panel replay will be enabled
in selctive update mode if there is any gap in curent implementation.
Cc: Jouni Högander <jouni.hogander@xxxxxxxxx>
Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
---
.../drm/i915/display/intel_display_types.h | 1 +
drivers/gpu/drm/i915/display/intel_psr.c | 65 ++++++++++++++-----
2 files changed, 50 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 4022d6d8281a..b1383988b656 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1696,6 +1696,7 @@ struct intel_psr {
u16 su_y_granularity;
bool source_panel_replay_support;
bool sink_panel_replay_support;
+ bool panel_replay_enabled;
u32 dc3co_exitline;
u32 dc3co_exit_delay;
struct delayed_work dc3co_work;
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 4e9c126a47ff..5cbf08a4c94c 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -606,8 +606,14 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp)
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
u8 dpcd_val = DP_PSR_ENABLE;
- /* Enable ALPM at sink for psr2 */
+ if (intel_dp->psr.panel_replay_enabled) {
+ drm_dp_dpcd_writeb(&intel_dp->aux, PANEL_REPLAY_CONFIG,
+ DP_PANEL_REPLAY_ENABLE);
+ return;
+ }
+
if (intel_dp->psr.psr2_enabled) {
+ /* Enable ALPM at sink for psr2 */
drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG,
DP_ALPM_ENABLE |
DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
@@ -757,6 +763,14 @@ static int psr2_block_count(struct intel_dp *intel_dp)
return psr2_block_count_lines(intel_dp) / 4;
}
+static void dg2_activate_panel_replay(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+
+ intel_de_rmw(dev_priv, TRANS_DP2_CTL(intel_dp->psr.transcoder), 0,
+ TRANS_DP2_PANEL_REPLAY_ENABLE);
+}
+
static void hsw_activate_psr2(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
@@ -1320,18 +1334,23 @@ void intel_psr_get_config(struct intel_encoder *encoder,
return;
intel_dp = &dig_port->dp;
- if (!CAN_PSR(intel_dp))
+ if (!(CAN_PSR(intel_dp) || CAN_PANEL_REPLAY(intel_dp)))
return;
mutex_lock(&intel_dp->psr.lock);
if (!intel_dp->psr.enabled)
goto unlock;
- /*
- * Not possible to read EDP_PSR/PSR2_CTL registers as it is
- * enabled/disabled because of frontbuffer tracking and others.
- */
- pipe_config->has_psr = true;
+ if (intel_dp->psr.panel_replay_enabled) {
+ pipe_config->has_panel_replay = true;
+ } else {
+ /*
+ * Not possible to read EDP_PSR/PSR2_CTL registers as it is
+ * enabled/disabled because of frontbuffer tracking and others.
+ */
+ pipe_config->has_psr = true;
+ }
+
pipe_config->has_psr2 = intel_dp->psr.psr2_enabled;
pipe_config->infoframes.enable |= intel_hdmi_infoframe_enable(DP_SDP_VSC);
@@ -1368,8 +1387,10 @@ static void intel_psr_activate(struct intel_dp *intel_dp)
lockdep_assert_held(&intel_dp->psr.lock);
- /* psr1 and psr2 are mutually exclusive.*/
- if (intel_dp->psr.psr2_enabled)
+ /* psr1, psr2 and panel-replay are mutually exclusive.*/
+ if (intel_dp->psr.panel_replay_enabled)
+ dg2_activate_panel_replay(intel_dp);
+ else if (intel_dp->psr.psr2_enabled)
hsw_activate_psr2(intel_dp);
else
hsw_activate_psr1(intel_dp);
@@ -1547,6 +1568,7 @@ static void intel_psr_enable_locked(struct intel_dp *intel_dp,
drm_WARN_ON(&dev_priv->drm, intel_dp->psr.enabled);
intel_dp->psr.psr2_enabled = crtc_state->has_psr2;
+ intel_dp->psr.panel_replay_enabled = crtc_state->has_panel_replay;
intel_dp->psr.busy_frontbuffer_bits = 0;
intel_dp->psr.pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
intel_dp->psr.transcoder = crtc_state->cpu_transcoder;
@@ -1562,8 +1584,12 @@ static void intel_psr_enable_locked(struct intel_dp *intel_dp,
if (!psr_interrupt_error_check(intel_dp))
return;
- drm_dbg_kms(&dev_priv->drm, "Enabling PSR%s\n",
- intel_dp->psr.psr2_enabled ? "2" : "1");
+ if (intel_dp->psr.panel_replay_enabled)
+ drm_dbg_kms(&dev_priv->drm, "Enabling Panel Replay\n");
+ else
+ drm_dbg_kms(&dev_priv->drm, "Enabling PSR%s\n",
+ intel_dp->psr.psr2_enabled ? "2" : "1");
+
intel_write_dp_vsc_sdp(encoder, crtc_state, &crtc_state->psr_vsc);
intel_snps_phy_update_psr_power_state(dev_priv, phy, true);
intel_psr_enable_sink(intel_dp);
@@ -1592,7 +1618,10 @@ static void intel_psr_exit(struct intel_dp *intel_dp)
return;
}
- if (intel_dp->psr.psr2_enabled) {
+ if (intel_dp->psr.panel_replay_enabled) {
+ intel_de_rmw(dev_priv, TRANS_DP2_CTL(intel_dp->psr.transcoder),
+ TRANS_DP2_PANEL_REPLAY_ENABLE, 0);
+ } else if (intel_dp->psr.psr2_enabled) {
tgl_disallow_dc3co_on_psr2_exit(intel_dp);
val = intel_de_rmw(dev_priv, EDP_PSR2_CTL(cpu_transcoder),
@@ -1641,8 +1670,11 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
if (!intel_dp->psr.enabled)
return;
- drm_dbg_kms(&dev_priv->drm, "Disabling PSR%s\n",
- intel_dp->psr.psr2_enabled ? "2" : "1");
+ if (intel_dp->psr.panel_replay_enabled)
+ drm_dbg_kms(&dev_priv->drm, "Disabling Panel Replay\n");
+ else
+ drm_dbg_kms(&dev_priv->drm, "Disabling PSR%s\n",
+ intel_dp->psr.psr2_enabled ? "2" : "1");
intel_psr_exit(intel_dp);
intel_psr_wait_exit_locked(intel_dp);
@@ -1675,6 +1707,7 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
drm_dp_dpcd_writeb(&intel_dp->aux, DP_RECEIVER_ALPM_CONFIG, 0);
intel_dp->psr.enabled = false;
+ intel_dp->psr.panel_replay_enabled = false;
intel_dp->psr.psr2_enabled = false;
intel_dp->psr.psr2_sel_fetch_enabled = false;
intel_dp->psr.psr2_sel_fetch_cff_enabled = false;
@@ -2244,7 +2277,7 @@ static void _intel_psr_post_plane_update(const struct intel_atomic_state *state,
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_encoder *encoder;
- if (!crtc_state->has_psr)
+ if (!(crtc_state->has_psr || crtc_state->has_panel_replay))
return;
for_each_intel_encoder_mask_with_psr(state->base.dev, encoder,
@@ -2291,7 +2324,7 @@ void intel_psr_post_plane_update(const struct intel_atomic_state *state)
struct intel_crtc *crtc;
int i;
- if (!HAS_PSR(dev_priv))
+ if (!(HAS_PSR(dev_priv) || HAS_DP20(dev_priv)))
return;
for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i)
--
2.29.0
