In Lunarlake and onwards it is possible to generate "PSR frame change" event using TRANS_PUSH mechanism. Implement function to enable this and take PSR into account in intel_vrr_send_push.
Signed-off-by: Jouni Högander <[email protected]> --- drivers/gpu/drm/i915/display/intel_psr.c | 6 ++++ drivers/gpu/drm/i915/display/intel_vrr.c | 45 ++++++++++++++++++++++-- drivers/gpu/drm/i915/display/intel_vrr.h | 2 ++ 3 files changed, 50 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index e3357f3b5c705..be73c1aaf1ee2 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -44,6 +44,7 @@ #include "intel_psr.h" #include "intel_psr_regs.h" #include "intel_snps_phy.h" +#include "intel_vrr.h" #include "skl_universal_plane.h" /** @@ -1928,6 +1929,9 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp, intel_de_rmw(display, CLKGATE_DIS_MISC, 0, CLKGATE_DIS_MISC_DMASC_GATING_DIS); } + + if (DISPLAY_VER(dev_priv) >= 20) + intel_vrr_psr_frame_change_enable(crtc_state); } static bool psr_interrupt_error_check(struct intel_dp *intel_dp) @@ -2164,6 +2168,8 @@ void intel_psr_disable(struct intel_dp *intel_dp, mutex_lock(&intel_dp->psr.lock); + if (DISPLAY_VER(display) >= 20) + intel_vrr_psr_frame_change_disable(old_crtc_state); intel_psr_disable_locked(intel_dp); mutex_unlock(&intel_dp->psr.lock); diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 8b4e3f938efea..5925ade4591d4 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -312,12 +312,20 @@ void intel_vrr_send_push(const struct intel_crtc_state *crtc_state) { struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; + u32 trans_push_val = TRANS_PUSH_SEND; - if (!crtc_state->vrr.enable) + if (!crtc_state->vrr.enable && (DISPLAY_VER(display) < 20 || + !crtc_state->has_psr)) return; + if (crtc_state->vrr.enable) + trans_push_val |= TRANS_PUSH_EN; + + if (DISPLAY_VER(display) >= 20 && crtc_state->has_psr) + trans_push_val |= LNL_TRANS_PUSH_PSR_PR_EN; + intel_de_write(display, TRANS_PUSH(display, cpu_transcoder), - TRANS_PUSH_EN | TRANS_PUSH_SEND); + trans_push_val); } bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state) @@ -325,7 +333,8 @@ bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state) struct intel_display *display = to_intel_display(crtc_state); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; - if (!crtc_state->vrr.enable) + if (!crtc_state->vrr.enable && (DISPLAY_VER(display) < 20 || + !crtc_state->has_psr)) return false; return intel_de_read(display, TRANS_PUSH(display, cpu_transcoder)) & TRANS_PUSH_SEND; @@ -358,6 +367,36 @@ void intel_vrr_enable(const struct intel_crtc_state *crtc_state) } } +/** + * intel_vrr_psr_frame_change_enable - Enable PSR frame change mechanism + * @crtc_state: Intel crtc state + * + * This function is for PSR to enable PSR frame change mechanism which is more + * controlled way to generate frame change event. + */ +void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state *crtc_state) +{ + struct intel_display *display = to_intel_display(crtc_state); + + intel_de_rmw(display, TRANS_PUSH(display, crtc_state->cpu_transcoder), + 0, LNL_TRANS_PUSH_PSR_PR_EN); +} + +/** + * intel_vrr_psr_frame_change_disable - Disable PSR frame change mechanism + * @crtc_state: Intel crtc state + * + * This function is for PSR to disable PSR frame change mechanism. + */ +void intel_vrr_psr_frame_change_disable(const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); + enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; + + intel_de_rmw(dev_priv, TRANS_PUSH(dev_priv, cpu_transcoder), + LNL_TRANS_PUSH_PSR_PR_EN, 0); +} + void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state) { struct intel_display *display = to_intel_display(old_crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h index 89937858200d3..a75f159168c11 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.h +++ b/drivers/gpu/drm/i915/display/intel_vrr.h @@ -23,6 +23,8 @@ void intel_vrr_enable(const struct intel_crtc_state *crtc_state); void intel_vrr_send_push(const struct intel_crtc_state *crtc_state); bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state); void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state); +void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state *crtc_state); +void intel_vrr_psr_frame_change_disable(const struct intel_crtc_state *crtc_state); void intel_vrr_get_config(struct intel_crtc_state *crtc_state); int intel_vrr_vmax_vblank_start(const struct intel_crtc_state *crtc_state); int intel_vrr_vmin_vblank_start(const struct intel_crtc_state *crtc_state); -- 2.34.1
