RE: [PATCH v7 5/6] drm/i915/panelreplay: enable/disable panel replay
> -Original Message-
> From: Manna, Animesh
> Sent: Wednesday, October 11, 2023 4:40 PM
> To: intel-...@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org; Manna, Animesh
> ; Hogander, Jouni ;
> Murthy, Arun R ; Nikula, Jani
>
> Subject: [PATCH v7 5/6] drm/i915/panelreplay: enable/disable panel replay
>
> 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]
>
> v5: Added PSR2_MAN_TRK_CTL programming as needed for Continuous Full
> Frame (CFF) update.
>
> v6: Rebased on latest.
>
> 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
> Cc: Arun R Murthy
> Cc: Jani Nikula
> Signed-off-by: Animesh Manna
> ---
> drivers/gpu/drm/i915/display/intel_ddi.c | 7 ++-
> .../drm/i915/display/intel_display_types.h| 1 +
> drivers/gpu/drm/i915/display/intel_psr.c | 63 ++-
> 3 files changed, 55 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 9151d5add960..16f98a7a5f20 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -2717,10 +2717,15 @@ static void intel_ddi_pre_enable_dp(struct
> intel_atomic_state *state,
> const struct drm_connector_state
> *conn_state) {
> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> + struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
>
> - if (HAS_DP20(dev_priv))
> + if (HAS_DP20(dev_priv)) {
> intel_dp_128b132b_sdp_crc16(enc_to_intel_dp(encoder),
> crtc_state);
> + if (crtc_state->has_panel_replay)
> + drm_dp_dpcd_writeb(_dp->aux,
> PANEL_REPLAY_CONFIG,
> +DP_PANEL_REPLAY_ENABLE);
> + }
>
> if (DISPLAY_VER(dev_priv) >= 14)
> mtl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 95b318f7b2b8..d8f35054bc11 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1704,6 +1704,7 @@ 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 a2e0637c53fb..80de831c2f60 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -608,8 +608,11 @@ 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)
> + return;
> +
> if (intel_dp->psr.psr2_enabled) {
> + /* Enable ALPM at sink for psr2 */
Unrelated change
Upon removing this
Reviewed-by: Arun R Murthy
Thanks and Regards,
Arun R Murthy
---
> drm_dp_dpcd_writeb(_dp->aux,
> DP_RECEIVER_ALPM_CONFIG,
> DP_ALPM_ENABLE |
> DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
> @@ -759,6 +762,17 @@ 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, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder),
> + 0,
> ADLP_PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME);
> +
> +
[PATCH v7 5/6] drm/i915/panelreplay: enable/disable panel replay
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]
v5: Added PSR2_MAN_TRK_CTL programming as needed for Continuous Full
Frame (CFF) update.
v6: Rebased on latest.
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
Cc: Arun R Murthy
Cc: Jani Nikula
Signed-off-by: Animesh Manna
---
drivers/gpu/drm/i915/display/intel_ddi.c | 7 ++-
.../drm/i915/display/intel_display_types.h| 1 +
drivers/gpu/drm/i915/display/intel_psr.c | 63 ++-
3 files changed, 55 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index 9151d5add960..16f98a7a5f20 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2717,10 +2717,15 @@ static void intel_ddi_pre_enable_dp(struct
intel_atomic_state *state,
const struct drm_connector_state
*conn_state)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
- if (HAS_DP20(dev_priv))
+ if (HAS_DP20(dev_priv)) {
intel_dp_128b132b_sdp_crc16(enc_to_intel_dp(encoder),
crtc_state);
+ if (crtc_state->has_panel_replay)
+ drm_dp_dpcd_writeb(_dp->aux, PANEL_REPLAY_CONFIG,
+ DP_PANEL_REPLAY_ENABLE);
+ }
if (DISPLAY_VER(dev_priv) >= 14)
mtl_ddi_pre_enable_dp(state, encoder, crtc_state, conn_state);
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 95b318f7b2b8..d8f35054bc11 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1704,6 +1704,7 @@ 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 a2e0637c53fb..80de831c2f60 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -608,8 +608,11 @@ 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)
+ return;
+
if (intel_dp->psr.psr2_enabled) {
+ /* Enable ALPM at sink for psr2 */
drm_dp_dpcd_writeb(_dp->aux, DP_RECEIVER_ALPM_CONFIG,
DP_ALPM_ENABLE |
DP_ALPM_LOCK_ERROR_IRQ_HPD_ENABLE);
@@ -759,6 +762,17 @@ 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, PSR2_MAN_TRK_CTL(intel_dp->psr.transcoder),
+0, ADLP_PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME);
+
+ 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);
@@ -1323,18 +1337,23 @@ void intel_psr_get_config(struct intel_encoder *encoder,
return;
intel_dp = _port->dp;
- if (!CAN_PSR(intel_dp))
+ if (!(CAN_PSR(intel_dp) || CAN_PANEL_REPLAY(intel_dp)))
return;
mutex_lock(_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 {
+ /*
