From: "Shankar, Uma" <uma.shankar@intel.com>
To: "Nautiyal, Ankit K" <ankit.k.nautiyal@intel.com>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>
Cc: "Kulkarni, Vandita" <vandita.kulkarni@intel.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"Sharma, Swati2" <swati2.sharma@intel.com>
Subject: RE: [PATCH v2 09/13] drm/i915: Check for FRL training before DP Link training
Date: Thu, 19 Nov 2020 11:19:09 +0000 [thread overview]
Message-ID: <af8acf59a08e4e18956f83bb35bf790e@intel.com> (raw)
In-Reply-To: <20201101100657.12087-10-ankit.k.nautiyal@intel.com>
> -----Original Message-----
> From: Nautiyal, Ankit K <ankit.k.nautiyal@intel.com>
> Sent: Sunday, November 1, 2020 3:37 PM
> To: intel-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org; Shankar, Uma <uma.shankar@intel.com>;
> Kulkarni, Vandita <vandita.kulkarni@intel.com>; ville.syrjala@linux.intel.com;
> Sharma, Swati2 <swati2.sharma@intel.com>
> Subject: [PATCH v2 09/13] drm/i915: Check for FRL training before DP Link
> training
>
> This patch calls functions to check FRL training requirements for an HDMI2.1 sink,
> when connected through PCON.
> The call is made before the DP link training. In case FRL is not required or failure
> during FRL training, the TMDS mode is selected for the pcon.
>
> v2: moved check_frl_training() just after FEC READY, before starting DP link
> training.
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
> Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_ddi.c | 2 ++
> drivers/gpu/drm/i915/display/intel_dp.c | 2 ++
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 09811be08cfe..3e76fb1117df 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -3492,6 +3492,8 @@ static void tgl_ddi_pre_enable_dp(struct
> intel_atomic_state *state,
> */
> intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
>
> + intel_dp_check_frl_training(intel_dp);
> +
> /*
> * 7.i Follow DisplayPort specification training sequence (see notes for
> * failure handling)
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 7feee2adf9b2..9047b620c0d0 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -4183,6 +4183,7 @@ static void intel_enable_dp(struct intel_atomic_state
> *state,
>
> intel_dp_set_power(intel_dp, DP_SET_POWER_D0);
> intel_dp_configure_protocol_converter(intel_dp);
> + intel_dp_check_frl_training(intel_dp);
> intel_dp_start_link_train(intel_dp, pipe_config);
> intel_dp_stop_link_train(intel_dp, pipe_config);
>
> @@ -6104,6 +6105,7 @@ int intel_dp_retrain_link(struct intel_encoder
> *encoder,
> !intel_dp_mst_is_master_trans(crtc_state))
> continue;
>
> + intel_dp_check_frl_training(intel_dp);
> intel_dp_start_link_train(intel_dp, crtc_state);
> intel_dp_stop_link_train(intel_dp, crtc_state);
> break;
> --
> 2.17.1
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next prev parent reply other threads:[~2020-11-19 11:19 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-01 10:06 [PATCH v2 00/13] Add support for DP-HDMI2.1 PCON Ankit Nautiyal
2020-11-01 10:06 ` [PATCH v2 01/13] drm/edid: Add additional HFVSDB fields for HDMI2.1 Ankit Nautiyal
2020-11-19 6:12 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 02/13] drm/edid: Parse MAX_FRL field from HFVSDB block Ankit Nautiyal
2020-11-19 6:13 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 03/13] drm/edid: Parse DSC1.2 cap fields " Ankit Nautiyal
2020-11-19 6:27 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 04/13] drm/dp_helper: Add Helpers for FRL Link Training support for DP-HDMI2.1 PCON Ankit Nautiyal
2020-11-19 7:47 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 05/13] drm/dp_helper: Add support for link failure detection Ankit Nautiyal
2020-11-19 7:52 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 06/13] drm/dp_helper: Add support for Configuring DSC for HDMI2.1 Pcon Ankit Nautiyal
2020-11-19 8:00 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 07/13] drm/i915: Capture max frl rate for PCON in dfp cap structure Ankit Nautiyal
2020-11-19 10:07 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 08/13] drm/i915: Add support for starting FRL training for HDMI2.1 via PCON Ankit Nautiyal
2020-11-19 10:23 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 09/13] drm/i915: Check for FRL training before DP Link training Ankit Nautiyal
2020-11-19 11:19 ` Shankar, Uma [this message]
2020-11-01 10:06 ` [PATCH v2 10/13] drm/i915: Add support for enabling link status and recovery Ankit Nautiyal
2020-11-19 11:22 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 11/13] drm/i915: Read DSC capabilities of the HDMI2.1 PCON encoder Ankit Nautiyal
2020-11-19 11:29 ` Shankar, Uma
2020-11-01 10:06 ` [PATCH v2 12/13] drm/i915: Add helper functions for calculating DSC parameters for HDMI2.1 Ankit Nautiyal
2020-11-25 20:28 ` Shankar, Uma
2020-12-02 14:13 ` Nautiyal, Ankit K
2020-11-01 10:06 ` [PATCH v2 13/13] drm/i915: Configure PCON for DSC1.1 to DSC1.2 encoding Ankit Nautiyal
2020-11-25 20:45 ` Shankar, Uma
2020-12-02 14:19 ` Nautiyal, Ankit K
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