From 21b8f4f57b5f37796b4aa6d24ad8b326fe68902b Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Thu, 12 May 2016 07:06:00 -0700 Subject: [PATCH 06/17] drm/i915: Track whether an atomic transaction changes the active CRTC's For the purposes of DDB re-allocation we need to know whether a transaction changes the list of CRTC's that are active. While state->modeset could be used for this purpose, that would be slightly too aggressive since it would lead us to re-allocate the DDB when a CRTC's mode changes, but not its final active state. Signed-off-by: Matt Roper Reviewed-by: Maarten Lankhorst Link: http://patchwork.freedesktop.org/patch/msgid/1463061971-19638-7-git-send-email-matthew.d.roper@intel.com --- drivers/gpu/drm/i915/intel_display.c | 3 +++ drivers/gpu/drm/i915/intel_drv.h | 10 ++++++++++ 2 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 4633aec..f26d1c5 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13300,6 +13300,9 @@ static int intel_modeset_checks(struct drm_atomic_state *state) intel_state->active_crtcs |= 1 << i; else intel_state->active_crtcs &= ~(1 << i); + + if (crtc_state->active != crtc->state->active) + intel_state->active_pipe_changes |= drm_crtc_mask(crtc); } /* diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 9308cff..d19e83e 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -291,6 +291,16 @@ struct intel_atomic_state { bool dpll_set, modeset; + /* + * Does this transaction change the pipes that are active? This mask + * tracks which CRTC's have changed their active state at the end of + * the transaction (not counting the temporary disable during modesets). + * This mask should only be non-zero when intel_state->modeset is true, + * but the converse is not necessarily true; simply changing a mode may + * not flip the final active status of any CRTC's + */ + unsigned int active_pipe_changes; + unsigned int active_crtcs; unsigned int min_pixclk[I915_MAX_PIPES]; -- 2.7.4