diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_psr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_psr.c | 44 |
1 files changed, 20 insertions, 24 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 89c9cf5f38d2..1d2fd1a8925a 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -454,22 +454,30 @@ static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp) return val; } -static void hsw_activate_psr1(struct intel_dp *intel_dp) +static u8 psr_compute_idle_frames(struct intel_dp *intel_dp) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); - u32 max_sleep_time = 0x1f; - u32 val = EDP_PSR_ENABLE; + int idle_frames; /* Let's use 6 as the minimum to cover all known cases including the * off-by-one issue that HW has in some cases. */ - int idle_frames = max(6, dev_priv->vbt.psr.idle_frames); - - /* sink_sync_latency of 8 means source has to wait for more than 8 - * frames, we'll go with 9 frames for now - */ + idle_frames = max(6, dev_priv->vbt.psr.idle_frames); idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency + 1); - val |= idle_frames << EDP_PSR_IDLE_FRAME_SHIFT; + + if (WARN_ON(idle_frames > 0xf)) + idle_frames = 0xf; + + return idle_frames; +} + +static void hsw_activate_psr1(struct intel_dp *intel_dp) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + u32 max_sleep_time = 0x1f; + u32 val = EDP_PSR_ENABLE; + + val |= psr_compute_idle_frames(intel_dp) << EDP_PSR_IDLE_FRAME_SHIFT; val |= max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT; if (IS_HASWELL(dev_priv)) @@ -493,13 +501,7 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp) struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); u32 val; - /* Let's use 6 as the minimum to cover all known cases including the - * off-by-one issue that HW has in some cases. - */ - int idle_frames = max(6, dev_priv->vbt.psr.idle_frames); - - idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency + 1); - val = idle_frames << EDP_PSR2_IDLE_FRAME_SHIFT; + val = psr_compute_idle_frames(intel_dp) << EDP_PSR2_IDLE_FRAME_SHIFT; val |= EDP_PSR2_ENABLE | EDP_SU_TRACK_ENABLE; if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) @@ -566,16 +568,10 @@ static void tgl_psr2_enable_dc3co(struct drm_i915_private *dev_priv) static void tgl_psr2_disable_dc3co(struct drm_i915_private *dev_priv) { - int idle_frames; + struct intel_dp *intel_dp = dev_priv->psr.dp; intel_display_power_set_target_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6); - /* - * Restore PSR2 idle frame let's use 6 as the minimum to cover all known - * cases including the off-by-one issue that HW has in some cases. - */ - idle_frames = max(6, dev_priv->vbt.psr.idle_frames); - idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency + 1); - psr2_program_idle_frames(dev_priv, idle_frames); + psr2_program_idle_frames(dev_priv, psr_compute_idle_frames(intel_dp)); } static void tgl_dc5_idle_thread(struct work_struct *work) |