From bc60ce6a8ec6939c2647c32527b8e1dabee8fe94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@linux.intel.com>
Date: Fri, 28 Jan 2022 12:37:56 +0200
Subject: drm/i915: Always check dp_m2_n2 on pre-bdw
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Git-commit: 2efb4adf489dd29526c412c4593d12e08076c68a
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
No point in special casing the check of dp_m2_n2 on pre-bdw platforms.
Either the transcoder has M2/N2 in which case the values should be
set to something sensible, or it doesn't in which case dp_m2_n2 is
always zeroed.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128103757.22461-17-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_display.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 24a3a481836f..4c3cc0431b2c 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6483,13 +6483,12 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
PIPE_CONF_CHECK_I(lane_count);
PIPE_CONF_CHECK_X(lane_lat_optim_mask);
- if (DISPLAY_VER(dev_priv) < 8) {
- PIPE_CONF_CHECK_M_N(dp_m_n);
-
- if (current_config->has_drrs)
- PIPE_CONF_CHECK_M_N(dp_m2_n2);
- } else
+ if (DISPLAY_VER(dev_priv) >= 9 || IS_BROADWELL(dev_priv)) {
PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
+ } else {
+ PIPE_CONF_CHECK_M_N(dp_m_n);
+ PIPE_CONF_CHECK_M_N(dp_m2_n2);
+ }
PIPE_CONF_CHECK_X(output_types);
--
2.38.1