From 6e15d0fc10203bf2f1801b4cf99971d0a4f0841c Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@intel.com>
Date: Sat, 21 Dec 2019 14:05:40 +0200
Subject: drm/i915/tgl: Make sure FBs have a correct CCS plane stride
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Git-commit: 71df86f0fbf5046a68a2adaaba98feee2f6e22d1
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
The CCS plane stride must be fixed on TGL, as it's not configurable for
the display. Instead the HW has a hardwired logic to determine it from
the main plane stride. Make sure userspace passes in the correct stride.
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191221120543.22816-8-imre.deak@intel.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_display.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 56082b2def0b..b5e42ad437dd 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2621,6 +2621,12 @@ bool is_ccs_modifier(u64 modifier)
modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
}
+static int gen12_ccs_aux_stride(struct drm_framebuffer *fb, int ccs_plane)
+{
+ return DIV_ROUND_UP(fb->pitches[ccs_to_main_plane(fb, ccs_plane)],
+ 512) * 64;
+}
+
u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
u32 pixel_format, u64 modifier)
{
@@ -16550,6 +16556,17 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
goto err;
}
+ if (is_gen12_ccs_plane(fb, i)) {
+ int ccs_aux_stride = gen12_ccs_aux_stride(fb, i);
+
+ if (fb->pitches[i] != ccs_aux_stride) {
+ DRM_DEBUG_KMS("ccs aux plane %d pitch (%d) must be %d\n",
+ i,
+ fb->pitches[i], ccs_aux_stride);
+ goto err;
+ }
+ }
+
fb->obj[i] = &obj->base;
}
--
2.28.0