From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5ED3DC77B75 for ; Fri, 5 May 2023 11:05:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 487AB10E5C4; Fri, 5 May 2023 11:05:47 +0000 (UTC) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6FBAF10E5C5 for ; Fri, 5 May 2023 11:05:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1683284745; x=1714820745; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=bsH7GKApaLM1mJlmuiwG7cMu7hhiKP/5dLQ5m6FOZyY=; b=QkSkE/WQBtV1cWwYCLfLAEBxbtze8HhFqk6dkPzZx2YtKPplRdxHDBk4 rbK9lAtxabeRmQiGE0hwTPkPRTNaSjDrbSS2kv+tA/KkFbhEyR8HVlgZI bLmJqQEhuYVARaj07Bq9V5LcDI9cyuLPVvecDZxwY+39bvvXIwTwscyXX Fvo9YUz1UKX1S8u5678ybY+1mfnZXfOctEgEcY3fOI0LmfnLX0NAa+Ocp BHZDQId24kaX0d0of29cptujjcWQAUuCfrFzj44CJw4pNmxX7AE/Z3DL7 vqfjEbKN5ER3B7HoKmxEeCaMBDgdWplI5UPumk9vKTQDgvcekH8U421V3 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10700"; a="351322604" X-IronPort-AV: E=Sophos;i="5.99,251,1677571200"; d="scan'208";a="351322604" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2023 04:05:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10700"; a="700374851" X-IronPort-AV: E=Sophos;i="5.99,251,1677571200"; d="scan'208";a="700374851" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.70]) by fmsmga007.fm.intel.com with SMTP; 05 May 2023 04:05:42 -0700 Received: by stinkbox (sSMTP sendmail emulation); Fri, 05 May 2023 14:05:42 +0300 Date: Fri, 5 May 2023 14:05:41 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: "Shankar, Uma" Message-ID: References: <20221107194604.15227-1-ville.syrjala@linux.intel.com> <20221107194604.15227-6-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Patchwork-Hint: comment Subject: Re: [Intel-gfx] [PATCH 5/5] drm/i915: Pick one HDMI port for infoframe/audio transmission on g4x X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "intel-gfx@lists.freedesktop.org" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Thu, May 04, 2023 at 09:13:27PM +0000, Shankar, Uma wrote: > > > > -----Original Message----- > > From: Intel-gfx On Behalf Of Ville Syrjala > > Sent: Tuesday, November 8, 2022 1:16 AM > > To: intel-gfx@lists.freedesktop.org > > Subject: [Intel-gfx] [PATCH 5/5] drm/i915: Pick one HDMI port for infoframe/audio > > transmission on g4x > > > > From: Ville Syrjälä > > > > On g4x the hardware has only one audio/video DIP block. Thus only one HDMI port > > can transmit audio/infoframes at a time. > > Currently we pretend that multiple ports can do it at the same time, but that doesn't > > actually work for two reasons: > > - the state of the single hw block will get clobbered by > > the multiple ports, leading to state checker failures > > - the hardware will automagically disable audio/infoframe > > transmission when enabled on multiple ports > > > > To fix this let's allow only one of the ports to transmit audio/infoframes at a time. > > We'll just go over all the HDMI ports and pick the first one that is otherwise capable > > of audio/infoframes. Further HDMI ports will be treated as if they had a DVI sink > > connected. > > > > In order to compute this consistently we'll also need to always add all HDMI ports to > > the atomic state. > > Hi Ville, > Approach and idea looks nice. One query I had on this is, if we have 2 HDMI ports/sink enabled > and we treat one of them as DVI due to this limitation. Later if the monitor being treated as > HDMI is unplugged, will we get the audio on the other monitor without modeset. Yes. When disabling the HDMI connector g4x_hdmi_connector_atomic_check() will add both connectors to the state, and HDMI vs. DVI decisions is redone for both connectors. > > Regards, > Uma Shankar > > > Signed-off-by: Ville Syrjälä > > --- > > drivers/gpu/drm/i915/display/g4x_hdmi.c | 114 +++++++++++++++++++++- > > drivers/gpu/drm/i915/display/g4x_hdmi.h | 4 + > > drivers/gpu/drm/i915/display/intel_hdmi.c | 14 ++- > > 3 files changed, 129 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c > > b/drivers/gpu/drm/i915/display/g4x_hdmi.c > > index fd23aa03cdc4..28d477d7c7e3 100644 > > --- a/drivers/gpu/drm/i915/display/g4x_hdmi.c > > +++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c > > @@ -6,6 +6,7 @@ > > */ > > > > #include "g4x_hdmi.h" > > +#include "intel_atomic.h" > > #include "intel_audio.h" > > #include "intel_connector.h" > > #include "intel_crtc.h" > > @@ -78,17 +79,66 @@ static bool intel_hdmi_get_hw_state(struct intel_encoder > > *encoder, > > return ret; > > } > > > > +static bool connector_is_hdmi(struct drm_connector *connector) { > > + struct intel_encoder *encoder = > > + intel_attached_encoder(to_intel_connector(connector)); > > + > > + return encoder && encoder->type == INTEL_OUTPUT_HDMI; } > > + > > +static bool g4x_compute_has_hdmi_sink(struct intel_atomic_state *state, > > + struct intel_crtc *this_crtc) { > > + const struct drm_connector_state *conn_state; > > + struct drm_connector *connector; > > + int i; > > + > > + /* > > + * On g4x only one HDMI port can transmit infoframes/audio at > > + * any given time. Select the first suitable port for this duty. > > + * > > + * See also g4x_hdmi_connector_atomic_check(). > > + */ > > + for_each_new_connector_in_state(&state->base, connector, conn_state, i) > > { > > + struct intel_encoder *encoder = to_intel_encoder(conn_state- > > >best_encoder); > > + const struct intel_crtc_state *crtc_state; > > + struct intel_crtc *crtc; > > + > > + if (!connector_is_hdmi(connector)) > > + continue; > > + > > + crtc = to_intel_crtc(conn_state->crtc); > > + if (!crtc) > > + continue; > > + > > + crtc_state = intel_atomic_get_new_crtc_state(state, crtc); > > + > > + if (!intel_hdmi_compute_has_hdmi_sink(encoder, crtc_state, > > conn_state)) > > + continue; > > + > > + return crtc == this_crtc; > > + } > > + > > + return false; > > +} > > + > > static int g4x_hdmi_compute_config(struct intel_encoder *encoder, > > struct intel_crtc_state *crtc_state, > > struct drm_connector_state *conn_state) { > > + struct intel_atomic_state *state = to_intel_atomic_state(crtc_state- > > >uapi.state); > > + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); > > struct drm_i915_private *i915 = to_i915(encoder->base.dev); > > > > if (HAS_PCH_SPLIT(i915)) > > crtc_state->has_pch_encoder = true; > > > > - crtc_state->has_hdmi_sink = > > - intel_hdmi_compute_has_hdmi_sink(encoder, crtc_state, > > conn_state); > > + if (IS_G4X(i915)) > > + crtc_state->has_hdmi_sink = g4x_compute_has_hdmi_sink(state, > > crtc); > > + else > > + crtc_state->has_hdmi_sink = > > + intel_hdmi_compute_has_hdmi_sink(encoder, crtc_state, > > conn_state); > > > > return intel_hdmi_compute_config(encoder, crtc_state, conn_state); } @@ > > -532,6 +582,66 @@ intel_hdmi_hotplug(struct intel_encoder *encoder, > > return state; > > } > > > > +int g4x_hdmi_connector_atomic_check(struct drm_connector *connector, > > + struct drm_atomic_state *state) { > > + struct drm_i915_private *i915 = to_i915(state->dev); > > + struct drm_connector_list_iter conn_iter; > > + struct drm_connector *conn; > > + int ret; > > + > > + ret = intel_digital_connector_atomic_check(connector, state); > > + if (ret) > > + return ret; > > + > > + if (!IS_G4X(i915)) > > + return 0; > > + > > + if (!intel_connector_needs_modeset(to_intel_atomic_state(state), > > connector)) > > + return 0; > > + > > + /* > > + * On g4x only one HDMI port can transmit infoframes/audio > > + * at any given time. Make sure all enabled HDMI ports are > > + * included in the state so that it's possible to select > > + * one of them for this duty. > > + * > > + * See also g4x_compute_has_hdmi_sink(). > > + */ > > + drm_connector_list_iter_begin(&i915->drm, &conn_iter); > > + drm_for_each_connector_iter(conn, &conn_iter) { > > + struct drm_connector_state *conn_state; > > + struct drm_crtc_state *crtc_state; > > + struct drm_crtc *crtc; > > + > > + if (!connector_is_hdmi(conn)) > > + continue; > > + > > + drm_dbg_kms(&i915->drm, "Adding [CONNECTOR:%d:%s]\n", > > + conn->base.id, conn->name); > > + > > + conn_state = drm_atomic_get_connector_state(state, conn); > > + if (IS_ERR(conn_state)) { > > + ret = PTR_ERR(conn_state); > > + break; > > + } > > + > > + crtc = conn_state->crtc; > > + if (!crtc) > > + continue; > > + > > + crtc_state = drm_atomic_get_new_crtc_state(state, crtc); > > + crtc_state->mode_changed = true; > > + > > + ret = drm_atomic_add_affected_planes(state, crtc); > > + if (ret) > > + break; > > + } > > + drm_connector_list_iter_end(&conn_iter); > > + > > + return ret; > > +} > > + > > void g4x_hdmi_init(struct drm_i915_private *dev_priv, > > i915_reg_t hdmi_reg, enum port port) { diff --git > > a/drivers/gpu/drm/i915/display/g4x_hdmi.h > > b/drivers/gpu/drm/i915/display/g4x_hdmi.h > > index db9a93bc9321..1e3ea7f3c846 100644 > > --- a/drivers/gpu/drm/i915/display/g4x_hdmi.h > > +++ b/drivers/gpu/drm/i915/display/g4x_hdmi.h > > @@ -11,9 +11,13 @@ > > #include "i915_reg_defs.h" > > > > enum port; > > +struct drm_atomic_state; > > +struct drm_connector; > > struct drm_i915_private; > > > > void g4x_hdmi_init(struct drm_i915_private *dev_priv, > > i915_reg_t hdmi_reg, enum port port); > > +int g4x_hdmi_connector_atomic_check(struct drm_connector *connector, > > + struct drm_atomic_state *state); > > > > #endif > > diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c > > b/drivers/gpu/drm/i915/display/intel_hdmi.c > > index 2425a9f59b90..d93aab847548 100644 > > --- a/drivers/gpu/drm/i915/display/intel_hdmi.c > > +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c > > @@ -40,6 +40,7 @@ > > #include > > #include > > > > +#include "g4x_hdmi.h" > > #include "i915_debugfs.h" > > #include "i915_drv.h" > > #include "intel_atomic.h" > > @@ -2590,10 +2591,21 @@ static const struct drm_connector_funcs > > intel_hdmi_connector_funcs = { > > .atomic_duplicate_state = intel_digital_connector_duplicate_state, > > }; > > > > +static int intel_hdmi_connector_atomic_check(struct drm_connector *connector, > > + struct drm_atomic_state *state) { > > + struct drm_i915_private *i915 = to_i915(state->dev); > > + > > + if (HAS_DDI(i915)) > > + return intel_digital_connector_atomic_check(connector, state); > > + else > > + return g4x_hdmi_connector_atomic_check(connector, state); } > > + > > static const struct drm_connector_helper_funcs > > intel_hdmi_connector_helper_funcs = { > > .get_modes = intel_hdmi_get_modes, > > .mode_valid = intel_hdmi_mode_valid, > > - .atomic_check = intel_digital_connector_atomic_check, > > + .atomic_check = intel_hdmi_connector_atomic_check, > > }; > > > > static void > > -- > > 2.37.4 > -- Ville Syrjälä Intel