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Date: Thu, 16 Apr 2020 15:25:01 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Imre Deak <imre.deak@...el.com>, José Roberto de Souza <jose.souza@...el.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.5 250/257] drm/i915/icl+: Dont enable DDI IO power on a TypeC port in TBT mode From: Imre Deak <imre.deak@...el.com> The DDI IO power well must not be enabled for a TypeC port in TBT mode, ensure this during driver loading/system resume. This gets rid of error messages like [drm] *ERROR* power well DDI E TC2 IO state mismatch (refcount 1/enabled 0) and avoids leaking the power ref when disabling the output. Cc: <stable@...r.kernel.org> # v5.4+ Signed-off-by: Imre Deak <imre.deak@...el.com> Reviewed-by: José Roberto de Souza <jose.souza@...el.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200330152244.11316-1-imre.deak@intel.com (cherry picked from commit f77a2db27f26c3ccba0681f7e89fef083718f07f) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/i915/display/intel_ddi.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 1488822398fed..4872c357eb6da 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2235,7 +2235,11 @@ static void intel_ddi_get_power_domains(struct intel_encoder *encoder, return; dig_port = enc_to_dig_port(&encoder->base); - intel_display_power_get(dev_priv, dig_port->ddi_io_power_domain); + + if (!intel_phy_is_tc(dev_priv, phy) || + dig_port->tc_mode != TC_PORT_TBT_ALT) + intel_display_power_get(dev_priv, + dig_port->ddi_io_power_domain); /* * AUX power is only needed for (e)DP mode, and for HDMI mode on TC -- 2.20.1
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