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-rw-r--r--drivers/gpu/drm/i915/display/intel_display_types.h1
-rw-r--r--drivers/gpu/drm/i915/display/intel_psr.c81
-rw-r--r--drivers/gpu/drm/i915/display/intel_psr_regs.h2
3 files changed, 70 insertions, 14 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 047fe3f8905a..92f06d67fd1e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1708,6 +1708,7 @@ struct intel_psr {
u32 dc3co_exitline;
u32 dc3co_exit_delay;
struct delayed_work dc3co_work;
+ u8 entry_setup_frames;
};
struct intel_dp {
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 920f77336163..3691f882e1c0 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -593,6 +593,9 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp)
if (intel_dp->psr.req_psr2_sdp_prior_scanline)
dpcd_val |= DP_PSR_SU_REGION_SCANLINE_CAPTURE;
+ if (intel_dp->psr.entry_setup_frames > 0)
+ dpcd_val |= DP_PSR_FRAME_CAPTURE;
+
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val);
drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
@@ -691,6 +694,9 @@ static void hsw_activate_psr1(struct intel_dp *intel_dp)
if (DISPLAY_VER(dev_priv) >= 8)
val |= EDP_PSR_CRC_ENABLE;
+ if (DISPLAY_VER(dev_priv) >= 20)
+ val |= LNL_EDP_PSR_ENTRY_SETUP_FRAMES(intel_dp->psr.entry_setup_frames);
+
intel_de_rmw(dev_priv, psr_ctl_reg(dev_priv, cpu_transcoder),
~EDP_PSR_RESTORE_PSR_ACTIVE_CTX_MASK, val);
}
@@ -728,11 +734,27 @@ static int psr2_block_count(struct intel_dp *intel_dp)
return psr2_block_count_lines(intel_dp) / 4;
}
+static u8 frames_before_su_entry(struct intel_dp *intel_dp)
+{
+ u8 frames_before_su_entry;
+
+ frames_before_su_entry = max_t(u8,
+ intel_dp->psr.sink_sync_latency + 1,
+ 2);
+
+ /* Entry setup frames must be at least 1 less than frames before SU entry */
+ if (intel_dp->psr.entry_setup_frames >= frames_before_su_entry)
+ frames_before_su_entry = intel_dp->psr.entry_setup_frames + 1;
+
+ return frames_before_su_entry;
+}
+
static void hsw_activate_psr2(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
u32 val = EDP_PSR2_ENABLE;
+ u32 psr_val = 0;
val |= EDP_PSR2_IDLE_FRAMES(psr_compute_idle_frames(intel_dp));
@@ -742,7 +764,8 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
if (DISPLAY_VER(dev_priv) >= 10 && DISPLAY_VER(dev_priv) <= 12)
val |= EDP_Y_COORDINATE_ENABLE;
- val |= EDP_PSR2_FRAME_BEFORE_SU(max_t(u8, intel_dp->psr.sink_sync_latency + 1, 2));
+ val |= EDP_PSR2_FRAME_BEFORE_SU(frames_before_su_entry(intel_dp));
+
val |= intel_psr2_get_tp_time(intel_dp);
if (DISPLAY_VER(dev_priv) >= 12) {
@@ -786,6 +809,9 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
if (intel_dp->psr.req_psr2_sdp_prior_scanline)
val |= EDP_PSR2_SU_SDP_SCANLINE;
+ if (DISPLAY_VER(dev_priv) >= 20)
+ psr_val |= LNL_EDP_PSR_ENTRY_SETUP_FRAMES(intel_dp->psr.entry_setup_frames);
+
if (intel_dp->psr.psr2_sel_fetch_enabled) {
u32 tmp;
@@ -799,7 +825,7 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
* PSR2 HW is incorrectly using EDP_PSR_TP1_TP3_SEL and BSpec is
* recommending keep this bit unset while PSR2 is enabled.
*/
- intel_de_write(dev_priv, psr_ctl_reg(dev_priv, cpu_transcoder), 0);
+ intel_de_write(dev_priv, psr_ctl_reg(dev_priv, cpu_transcoder), psr_val);
intel_de_write(dev_priv, EDP_PSR2_CTL(cpu_transcoder), val);
}
@@ -1067,6 +1093,39 @@ static bool _compute_psr2_wake_times(struct intel_dp *intel_dp,
return true;
}
+static u8 intel_psr_entry_setup_frames(struct intel_dp *intel_dp,
+ const struct drm_display_mode *adjusted_mode)
+{
+ struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ int psr_setup_time = drm_dp_psr_setup_time(intel_dp->psr_dpcd);
+ u8 entry_setup_frames = 0;
+
+ if (psr_setup_time < 0) {
+ drm_dbg_kms(&i915->drm,
+ "PSR condition failed: Invalid PSR setup time (0x%02x)\n",
+ intel_dp->psr_dpcd[1]);
+ return -ETIME;
+ }
+
+ if (intel_usecs_to_scanlines(adjusted_mode, psr_setup_time) >
+ adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vdisplay - 1) {
+ if (DISPLAY_VER(i915) >= 20) {
+ /* setup entry frames can be up to 3 frames */
+ entry_setup_frames = 1;
+ drm_dbg_kms(&i915->drm,
+ "PSR setup entry frames %d\n",
+ entry_setup_frames);
+ } else {
+ drm_dbg_kms(&i915->drm,
+ "PSR condition failed: PSR setup time (%d us) too long\n",
+ psr_setup_time);
+ return -ETIME;
+ }
+ }
+
+ return entry_setup_frames;
+}
+
static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state)
{
@@ -1214,7 +1273,7 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
const struct drm_display_mode *adjusted_mode =
&crtc_state->hw.adjusted_mode;
- int psr_setup_time;
+ u8 entry_setup_frames;
/*
* Current PSR panels don't work reliably with VRR enabled
@@ -1243,19 +1302,13 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
return;
}
- psr_setup_time = drm_dp_psr_setup_time(intel_dp->psr_dpcd);
- if (psr_setup_time < 0) {
- drm_dbg_kms(&dev_priv->drm,
- "PSR condition failed: Invalid PSR setup time (0x%02x)\n",
- intel_dp->psr_dpcd[1]);
- return;
- }
+ entry_setup_frames = intel_psr_entry_setup_frames(intel_dp, adjusted_mode);
- if (intel_usecs_to_scanlines(adjusted_mode, psr_setup_time) >
- adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vdisplay - 1) {
+ if (entry_setup_frames >= 0) {
+ intel_dp->psr.entry_setup_frames = entry_setup_frames;
+ } else {
drm_dbg_kms(&dev_priv->drm,
- "PSR condition failed: PSR setup time (%d us) too long\n",
- psr_setup_time);
+ "PSR condition failed: PSR setup timing not met\n");
return;
}
diff --git a/drivers/gpu/drm/i915/display/intel_psr_regs.h b/drivers/gpu/drm/i915/display/intel_psr_regs.h
index d39951383c92..efe4306b37e0 100644
--- a/drivers/gpu/drm/i915/display/intel_psr_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_psr_regs.h
@@ -35,6 +35,8 @@
#define EDP_PSR_MIN_LINK_ENTRY_TIME_0_LINES REG_FIELD_PREP(EDP_PSR_MIN_LINK_ENTRY_TIME_MASK, 3)
#define EDP_PSR_MAX_SLEEP_TIME_MASK REG_GENMASK(24, 20)
#define EDP_PSR_MAX_SLEEP_TIME(x) REG_FIELD_PREP(EDP_PSR_MAX_SLEEP_TIME_MASK, (x))
+#define LNL_EDP_PSR_ENTRY_SETUP_FRAMES_MASK REG_GENMASK(17, 16)
+#define LNL_EDP_PSR_ENTRY_SETUP_FRAMES(x) REG_FIELD_PREP(LNL_EDP_PSR_ENTRY_SETUP_FRAMES_MASK, (x))
#define EDP_PSR_SKIP_AUX_EXIT REG_BIT(12)
#define EDP_PSR_TP_MASK REG_BIT(11)
#define EDP_PSR_TP_TP1_TP2 REG_FIELD_PREP(EDP_PSR_TP_MASK, 0)
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