From: Alexander Stein <alexander.stein@ew.tq-group.com>
To: "Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"David Airlie" <airlied@gmail.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Jonathan Corbet" <corbet@lwn.net>,
"Sandy Huang" <hjc@rock-chips.com>,
"Heiko Stübner" <heiko@sntech.de>, "Chen-Yu Tsai" <wens@csie.org>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Samuel Holland" <samuel@sholland.org>,
dri-devel@lists.freedesktop.org
Cc: "Hans Verkuil" <hverkuil@xs4all.nl>,
"Sebastian Wick" <sebastian.wick@redhat.com>,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev,
"Maxime Ripard" <mripard@kernel.org>,
"Maxime Ripard" <mripard@kernel.org>
Subject: Re: [PATCH v8 20/27] drm/connector: hdmi: Add Infoframes generation
Date: Fri, 08 Mar 2024 13:47:08 +0100 [thread overview]
Message-ID: <3612623.R56niFO833@steina-w> (raw)
In-Reply-To: <20240307-kms-hdmi-connector-state-v8-20-ef6a6f31964b@kernel.org>
Hi Maxime,
Am Donnerstag, 7. März 2024, 14:38:47 CET schrieb Maxime Ripard:
> Infoframes in KMS is usually handled by a bunch of low-level helpers
> that require quite some boilerplate for drivers. This leads to
> discrepancies with how drivers generate them, and which are actually
> sent.
>
> Now that we have everything needed to generate them in the HDMI
> connector state, we can generate them in our common logic so that
> drivers can simply reuse what we precomputed.
>
> Signed-off-by: Maxime Ripard <mripard@kernel.org>
> ---
> drivers/gpu/drm/Kconfig | 1 +
> drivers/gpu/drm/drm_atomic_state_helper.c | 327 +++++++++++++++++++++
> drivers/gpu/drm/drm_connector.c | 14 +
> .../gpu/drm/tests/drm_atomic_state_helper_test.c | 1 +
> drivers/gpu/drm/tests/drm_connector_test.c | 12 +
> include/drm/drm_atomic_state_helper.h | 8 +
> include/drm/drm_connector.h | 133 +++++++++
> 7 files changed, 496 insertions(+)
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 872edb47bb53..ad9c467e20ce 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -97,10 +97,11 @@ config DRM_KUNIT_TEST
> If in doubt, say "N".
>
> config DRM_KMS_HELPER
> tristate
> depends on DRM
> + select DRM_DISPLAY_HDMI_HELPER
> help
> CRTC helpers for KMS drivers.
>
> config DRM_DEBUG_DP_MST_TOPOLOGY_REFS
> bool "Enable refcount backtrace history in the DP MST helpers"
> diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
> index e66272c0d006..46d9fd2ea8fa 100644
> --- a/drivers/gpu/drm/drm_atomic_state_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_state_helper.c
> [snip]
> @@ -958,10 +1100,195 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
>
> return 0;
> }
> EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
>
> +#define HDMI_MAX_INFOFRAME_SIZE 29
> +
> +static int clear_device_infoframe(struct drm_connector *connector,
> + enum hdmi_infoframe_type type)
> +{
> + const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;
> +
> + if (!funcs || !funcs->clear_infoframe)
> + return 0;
> +
> + return funcs->clear_infoframe(connector, type);
> +}
> +
> +static int clear_infoframe(struct drm_connector *connector,
> + struct drm_connector_hdmi_infoframe *conn_frame,
> + struct drm_connector_hdmi_infoframe *old_frame)
> +{
> + int ret;
> +
> + ret = clear_device_infoframe(connector, old_frame->data.any.type);
> + if (ret)
> + return ret;
> +
> + memset(old_frame, 0, sizeof(*old_frame));
> +
> + return 0;
> +}
> +
> +static int write_device_infoframe(struct drm_connector *connector,
> + union hdmi_infoframe *frame)
> +{
> + const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;
> + u8 buffer[HDMI_MAX_INFOFRAME_SIZE];
> + int len;
> +
> + if (!funcs || !funcs->write_infoframe)
> + return -ENOSYS;
> +
> + len = hdmi_infoframe_pack(frame, buffer, sizeof(buffer));
> + if (len < 0)
> + return len;
> +
> + return funcs->write_infoframe(connector, frame->any.type, buffer, len);
> +}
> +
> +static int write_infoframe(struct drm_connector *connector,
> + struct drm_connector_hdmi_infoframe *conn_frame,
> + struct drm_connector_hdmi_infoframe *new_frame)
> +{
> + int ret;
> +
> + ret = write_device_infoframe(connector, &new_frame->data);
> + if (ret)
> + return ret;
> +
> + if (conn_frame)
> + memcpy(conn_frame, new_frame, sizeof(*conn_frame));
> +
> + return 0;
> +}
> +
> +static int write_or_clear_infoframe(struct drm_connector *connector,
> + struct drm_connector_hdmi_infoframe *conn_frame,
> + struct drm_connector_hdmi_infoframe *old_frame,
> + struct drm_connector_hdmi_infoframe *new_frame)
> +{
> + if (new_frame->set)
> + return write_infoframe(connector, conn_frame, new_frame);
> +
> + if (old_frame->set && !new_frame->set)
> + return clear_infoframe(connector, conn_frame, old_frame);
> +
> + return 0;
> +}
> +
> +#define UPDATE_INFOFRAME(c, os, ns, i) \
> + write_or_clear_infoframe(c, \
> + &(c)->hdmi.infoframes.i, \
> + &(os)->hdmi.infoframes.i, \
> + &(ns)->hdmi.infoframes.i)
> +
> +/**
> + * drm_atomic_helper_connector_hdmi_update_infoframes - Update the Infoframes
> + * @connector: A pointer to the HDMI connector
> + * @state: The HDMI connector state to generate the infoframe from
> + *
> + * This function is meant for HDMI connector drivers to write their
> + * infoframes. It will typically be used in a
> + * @drm_connector_helper_funcs.atomic_enable implementation.
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector,
> + struct drm_atomic_state *state)
> +{
> + struct drm_connector_state *old_state =
> + drm_atomic_get_old_connector_state(state, connector);
> + struct drm_connector_state *new_state =
> + drm_atomic_get_new_connector_state(state, connector);
> + struct drm_display_info *info = &connector->display_info;
> + int ret;
> +
> + if (!info->is_hdmi)
> + return 0;
> +
> + if (!info->has_hdmi_infoframe)
> + return 0;
> +
> + mutex_lock(&connector->hdmi.infoframes.lock);
> +
> + ret = UPDATE_INFOFRAME(connector, old_state, new_state, avi);
> + if (ret)
> + goto out;
> +
> + if (connector->hdmi.infoframes.audio.set) {
> + ret = write_infoframe(connector,
> + NULL,
> + &connector->hdmi.infoframes.audio);
> + if (ret)
> + goto out;
> + }
> +
> + ret = UPDATE_INFOFRAME(connector, old_state, new_state, hdr_drm);
> + if (ret)
> + goto out;
> +
> + ret = UPDATE_INFOFRAME(connector, old_state, new_state, spd);
> + if (ret)
> + goto out;
> +
> + ret = UPDATE_INFOFRAME(connector, old_state, new_state, hdmi);
> + if (ret)
> + goto out;
> +
> +out:
> + mutex_unlock(&connector->hdmi.infoframes.lock);
> + return ret;
> +}
> +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update_infoframes);
> +
> +#undef UPDATE_INFOFRAME
> +#undef UPDATE_INFOFRAME_TOGGLE
UPDATE_INFOFRAME_TOGGLE seems to never be defined.
Best regards,
Alexadner
> +
> +/**
> + * drm_atomic_helper_connector_hdmi_update_audio_infoframe - Update the Audio Infoframe
> + * @connector: A pointer to the HDMI connector
> + * @frame: A pointer to the audio infoframe to write
> + *
> + * This function is meant for HDMI connector drivers to update their
> + * audio infoframe. It will typically be used in one of the ALSA hooks
> + * (most likely prepare).
> + *
> + * Returns:
> + * Zero on success, error code on failure.
> + */
> +int
> +drm_atomic_helper_connector_hdmi_update_audio_infoframe(struct drm_connector *connector,
> + struct hdmi_audio_infoframe *frame)
> +{
> + struct drm_connector_hdmi_infoframe infoframe = {};
> + struct drm_display_info *info = &connector->display_info;
> + int ret;
> +
> + if (!info->is_hdmi)
> + return 0;
> +
> + if (!info->has_hdmi_infoframe)
> + return 0;
> +
> + memcpy(&infoframe.data, frame, sizeof(infoframe.data));
> + infoframe.set = true;
> +
> + mutex_lock(&connector->hdmi.infoframes.lock);
> +
> + ret = write_infoframe(connector,
> + &connector->hdmi.infoframes.audio,
> + &infoframe);
> +
> + mutex_unlock(&connector->hdmi.infoframes.lock);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update_audio_infoframe);
> +
> /**
> * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state
> * @connector: connector object
> * @state: atomic connector state
> *
> [snip]
--
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
http://www.tq-group.com/
next prev parent reply other threads:[~2024-03-08 12:47 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-07 13:38 [PATCH v8 00/27] drm/connector: Create HDMI Connector infrastructure Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 01/27] drm/connector: Introduce an HDMI connector initialization function Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 02/27] drm/tests: connector: Add tests for drmm_connector_hdmi_init Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 03/27] drm/connector: hdmi: Create an HDMI sub-state Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 04/27] drm/connector: hdmi: Add output BPC to the connector state Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 05/27] drm/tests: Add output bpc tests Maxime Ripard
2024-03-08 8:39 ` Alexander Stein
2024-03-07 13:38 ` [PATCH v8 06/27] drm/connector: hdmi: Add support for output format Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 07/27] drm/tests: Add output formats tests Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 08/27] drm/connector: hdmi: Add HDMI compute clock helper Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 09/27] drm/tests: Add HDMI TDMS character rate tests Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 10/27] drm/connector: hdmi: Calculate TMDS character rate Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 11/27] drm/tests: Add TDMS character rate connector state tests Maxime Ripard
2024-03-08 11:11 ` Alexander Stein
2024-03-07 13:38 ` [PATCH v8 12/27] drm/connector: hdmi: Add custom hook to filter TMDS character rate Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 13/27] drm/tests: Add HDMI connector rate filter hook tests Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 14/27] drm/connector: hdmi: Compute bpc and format automatically Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 15/27] drm/tests: Add HDMI connector bpc and format tests Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 16/27] drm/connector: hdmi: Add Broadcast RGB property Maxime Ripard
2024-03-08 11:26 ` Alexander Stein
2024-03-08 15:26 ` Pekka Paalanen
2024-03-07 13:38 ` [PATCH v8 17/27] drm/tests: Add tests for " Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 18/27] drm/connector: hdmi: Add RGB Quantization Range to the connector state Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 19/27] drm/tests: Add RGB Quantization tests Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 20/27] drm/connector: hdmi: Add Infoframes generation Maxime Ripard
2024-03-07 21:34 ` Dmitry Baryshkov
2024-03-07 22:02 ` Dmitry Baryshkov
2024-03-08 12:47 ` Alexander Stein [this message]
2024-03-07 13:38 ` [PATCH v8 21/27] drm/tests: Add infoframes test Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 22/27] drm/connector: hdmi: Create Infoframe DebugFS entries Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 23/27] drm/vc4: hdmi: Switch to HDMI connector Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 24/27] drm/vc4: tests: Remove vc4_dummy_plane structure Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 25/27] drm/vc4: tests: Convert to plane creation helper Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 26/27] drm/rockchip: inno_hdmi: Switch to HDMI connector Maxime Ripard
2024-03-07 13:38 ` [PATCH v8 27/27] drm/sun4i: hdmi: " Maxime Ripard
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