From cad3fab413efbfdb1c64a08808aa3a59fa288457 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 18 Jan 2022 11:23:45 +0200 Subject: [PATCH] drm/i915: Extract skl_crtc_calc_dbuf_bw() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Extract the dbuf slice data_rate calculation into a small helper. Should make it a bit easier to handle the different color planes of planar formats correctly. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220118092354.11631-7-ville.syrjala@linux.intel.com Reviewed-by: Stanislav Lisovskiy --- drivers/gpu/drm/i915/display/intel_bw.c | 82 ++++++++++++++++++--------------- 1 file changed, 44 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index 5dce3cf..23aa8e0 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -673,6 +673,49 @@ intel_atomic_get_bw_state(struct intel_atomic_state *state) return to_intel_bw_state(bw_state); } +static void skl_crtc_calc_dbuf_bw(struct intel_bw_state *bw_state, + const struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + struct drm_i915_private *i915 = to_i915(crtc->base.dev); + struct intel_dbuf_bw *crtc_bw = &bw_state->dbuf_bw[crtc->pipe]; + enum plane_id plane_id; + + memset(&crtc_bw->used_bw, 0, sizeof(crtc_bw->used_bw)); + + if (!crtc_state->hw.active) + return; + + for_each_plane_id_on_crtc(crtc, plane_id) { + const struct skl_ddb_entry *ddb_y = + &crtc_state->wm.skl.plane_ddb_y[plane_id]; + const struct skl_ddb_entry *ddb_uv = + &crtc_state->wm.skl.plane_ddb_uv[plane_id]; + unsigned int data_rate = crtc_state->data_rate[plane_id]; + unsigned int dbuf_mask = 0; + enum dbuf_slice slice; + + dbuf_mask |= skl_ddb_dbuf_slice_mask(i915, ddb_y); + dbuf_mask |= skl_ddb_dbuf_slice_mask(i915, ddb_uv); + + /* + * FIXME: To calculate that more properly we probably + * need to split per plane data_rate into data_rate_y + * and data_rate_uv for multiplanar formats in order not + * to get accounted those twice if they happen to reside + * on different slices. + * However for pre-icl this would work anyway because + * we have only single slice and for icl+ uv plane has + * non-zero data rate. + * So in worst case those calculation are a bit + * pessimistic, which shouldn't pose any significant + * problem anyway. + */ + for_each_dbuf_slice_in_mask(i915, slice, dbuf_mask) + crtc_bw->used_bw[slice] += data_rate; + } +} + int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) { struct drm_i915_private *dev_priv = to_i915(state->base.dev); @@ -685,50 +728,13 @@ int skl_bw_calc_min_cdclk(struct intel_atomic_state *state) int i; for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) { - enum plane_id plane_id; - struct intel_dbuf_bw *crtc_bw; - new_bw_state = intel_atomic_get_bw_state(state); if (IS_ERR(new_bw_state)) return PTR_ERR(new_bw_state); old_bw_state = intel_atomic_get_old_bw_state(state); - crtc_bw = &new_bw_state->dbuf_bw[crtc->pipe]; - - memset(&crtc_bw->used_bw, 0, sizeof(crtc_bw->used_bw)); - - if (!crtc_state->hw.active) - continue; - - for_each_plane_id_on_crtc(crtc, plane_id) { - const struct skl_ddb_entry *plane_alloc = - &crtc_state->wm.skl.plane_ddb_y[plane_id]; - const struct skl_ddb_entry *uv_plane_alloc = - &crtc_state->wm.skl.plane_ddb_uv[plane_id]; - unsigned int data_rate = crtc_state->data_rate[plane_id]; - unsigned int dbuf_mask = 0; - enum dbuf_slice slice; - - dbuf_mask |= skl_ddb_dbuf_slice_mask(dev_priv, plane_alloc); - dbuf_mask |= skl_ddb_dbuf_slice_mask(dev_priv, uv_plane_alloc); - - /* - * FIXME: To calculate that more properly we probably - * need to to split per plane data_rate into data_rate_y - * and data_rate_uv for multiplanar formats in order not - * to get accounted those twice if they happen to reside - * on different slices. - * However for pre-icl this would work anyway because - * we have only single slice and for icl+ uv plane has - * non-zero data rate. - * So in worst case those calculation are a bit - * pessimistic, which shouldn't pose any significant - * problem anyway. - */ - for_each_dbuf_slice_in_mask(dev_priv, slice, dbuf_mask) - crtc_bw->used_bw[slice] += data_rate; - } + skl_crtc_calc_dbuf_bw(new_bw_state, crtc_state); } if (!old_bw_state) -- 2.7.4