From 1e6ee542262d611a07e15eee0abb4516d7378b93 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Wed, 26 Oct 2016 15:41:32 +0200 Subject: [PATCH] drm/i915/skl+: Remove data_rate from watermark struct, v2. It's only used in one function, and can be calculated without caching it in the global struct by using drm_atomic_crtc_state_for_each_plane_state. There are loops over all planes, including planes that don't exist. This is harmless, because data_rate will always be 0 for them and we never program them when updating watermarks. Changes since v1: - Rename rate back to data_rate, and change array name to plane_data_rate. (Matt) - Remove whitespace. (Paulo) Signed-off-by: Maarten Lankhorst Reviewed-by: Matt Roper Cc: Paulo Zanoni Link: http://patchwork.freedesktop.org/patch/msgid/1477489299-25777-5-git-send-email-maarten.lankhorst@linux.intel.com Reviewed-by: Paulo Zanoni --- drivers/gpu/drm/i915/intel_drv.h | 4 ---- drivers/gpu/drm/i915/intel_pm.c | 35 ++++++++++++++++------------------- 2 files changed, 16 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 46233356ed24..66a1965401c8 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -501,10 +501,6 @@ struct intel_crtc_wm_state { struct skl_pipe_wm optimal; struct skl_ddb_entry ddb; - /* cached plane data rate */ - unsigned plane_data_rate[I915_MAX_PLANES]; - unsigned plane_y_data_rate[I915_MAX_PLANES]; - /* minimum block allocation */ uint16_t minimum_blocks[I915_MAX_PLANES]; uint16_t minimum_y_blocks[I915_MAX_PLANES]; diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 56372f41137c..909e1b1ee5a6 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3263,13 +3263,12 @@ skl_plane_relative_data_rate(const struct intel_crtc_state *cstate, * 3 * 4096 * 8192 * 4 < 2^32 */ static unsigned int -skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate) +skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate, + unsigned *plane_data_rate, + unsigned *plane_y_data_rate) { struct drm_crtc_state *cstate = &intel_cstate->base; struct drm_atomic_state *state = cstate->state; - struct drm_crtc *crtc = cstate->crtc; - struct drm_device *dev = crtc->dev; - struct intel_crtc *intel_crtc = to_intel_crtc(crtc); struct drm_plane *plane; const struct intel_plane *intel_plane; const struct drm_plane_state *pstate; @@ -3287,21 +3286,16 @@ skl_get_total_relative_data_rate(struct intel_crtc_state *intel_cstate) /* packed/uv */ rate = skl_plane_relative_data_rate(intel_cstate, pstate, 0); - intel_cstate->wm.skl.plane_data_rate[id] = rate; + plane_data_rate[id] = rate; + + total_data_rate += rate; /* y-plane */ rate = skl_plane_relative_data_rate(intel_cstate, pstate, 1); - intel_cstate->wm.skl.plane_y_data_rate[id] = rate; - } + plane_y_data_rate[id] = rate; - /* Calculate CRTC's total data rate from cached values */ - for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { - int id = skl_wm_plane_id(intel_plane); - - /* packed/uv */ - total_data_rate += intel_cstate->wm.skl.plane_data_rate[id]; - total_data_rate += intel_cstate->wm.skl.plane_y_data_rate[id]; + total_data_rate += rate; } return total_data_rate; @@ -3389,6 +3383,8 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, unsigned int total_data_rate; int num_active; int id, i; + unsigned plane_data_rate[I915_MAX_PLANES] = {}; + unsigned plane_y_data_rate[I915_MAX_PLANES] = {}; /* Clear the partitioning for disabled planes. */ memset(ddb->plane[pipe], 0, sizeof(ddb->plane[pipe])); @@ -3446,17 +3442,18 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, * * FIXME: we may not allocate every single block here. */ - total_data_rate = skl_get_total_relative_data_rate(cstate); + total_data_rate = skl_get_total_relative_data_rate(cstate, + plane_data_rate, + plane_y_data_rate); if (total_data_rate == 0) return 0; start = alloc->start; - for_each_intel_plane_on_crtc(dev, intel_crtc, intel_plane) { + for (id = 0; id < I915_MAX_PLANES; id++) { unsigned int data_rate, y_data_rate; uint16_t plane_blocks, y_plane_blocks = 0; - int id = skl_wm_plane_id(intel_plane); - data_rate = cstate->wm.skl.plane_data_rate[id]; + data_rate = plane_data_rate[id]; /* * allocation for (packed formats) or (uv-plane part of planar format): @@ -3478,7 +3475,7 @@ skl_allocate_pipe_ddb(struct intel_crtc_state *cstate, /* * allocation for y_plane part of planar format: */ - y_data_rate = cstate->wm.skl.plane_y_data_rate[id]; + y_data_rate = plane_y_data_rate[id]; y_plane_blocks = y_minimum[id]; y_plane_blocks += div_u64((uint64_t)alloc_size * y_data_rate, -- 2.11.0