The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
Possible dependencies:
91c9651425fe ("drm/i915: Fix watermark calculations for gen12+ MC CCS modifier")
a89a96a58611 ("drm/i915: Fix watermark calculations for gen12+ RC CCS modifier")
42a0d256496f ("drm/i915: Extract skl_watermark.c")
55544b2811a6 ("drm/i915: Split intel_read_wm_latency() into per-platform versions")
b7d1559038b6 ("drm/i915: move dbuf under display sub-struct")
90b87cf24304 ("drm/i915: move mipi_mmio_base to display.dsi")
d51309b4e9aa ("drm/i915: move and group cdclk under display.cdclk")
f0acaf9d6912 ("drm/i915: move and group max_bw and bw_obj under display.bw")
c3704f1938e7 ("drm/i915: move and group sagv under display.sagv")
a30a6fe9e56c ("drm/i915: move wm to display.wm")
b3d81dafdc48 ("drm/i915: move and group fbdev under display.fbdev")
36d225f365e7 ("drm/i915: move dpll under display.dpll")
4be1c12c880e ("drm/i915: move and split audio under display.audio and display.funcs")
6c77055aa674 ("drm/i915: move dmc to display.dmc")
12dc50823845 ("drm/i915: move and group pps members under display.pps")
203eb5a98edb ("drm/i915: move and group gmbus members under display.gmbus")
34dc3cc5017f ("drm/i915: move color_funcs to display.funcs")
06a50913d96e ("drm/i915: move fdi_funcs to display.funcs")
103472c13f0a ("drm/i915: move wm_disp funcs to display.funcs")
5a04eb5be8e4 ("drm/i915: move hotplug_funcs to display.funcs")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 91c9651425fe955b1387f3637607dda005f3f710 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@xxxxxxxxxxxxxxx>
Date: Mon, 3 Oct 2022 14:15:40 +0300
Subject: [PATCH] drm/i915: Fix watermark calculations for gen12+ MC CCS
modifier
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Take the gen12+ MC CCS modifier into account when calculating the
watermarks. Othwerwise we'll calculate the watermarks thinking this
Y-tiled modifier is linear.
The rc_surface part is actually a nop since that is not used
for any glk+ platform.
v2: Split RC CCS vs. MC CCS to separate patches
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 2dfbf9d2873a ("drm/i915/tgl: Gen-12 display can decompress surfaces compressed by the media engine")
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20221003111544.8007-3-ville.syrjala@xxxxxxxxxxxxxxx
diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c
index 6ce1213c18b3..1b8f5970cbf7 100644
--- a/drivers/gpu/drm/i915/display/skl_watermark.c
+++ b/drivers/gpu/drm/i915/display/skl_watermark.c
@@ -1711,11 +1711,13 @@ skl_compute_wm_params(const struct intel_crtc_state *crtc_state,
modifier == I915_FORMAT_MOD_Yf_TILED ||
modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
- modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS;
+ modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
+ modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
wp->x_tiled = modifier == I915_FORMAT_MOD_X_TILED;
wp->rc_surface = modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
modifier == I915_FORMAT_MOD_Yf_TILED_CCS ||
- modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS;
+ modifier == I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS ||
+ modifier == I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS;
wp->is_planar = intel_format_info_is_yuv_semiplanar(format, modifier);
wp->width = width;
