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Wed, 20 Oct 2021 05:39:54 -0700 (PDT) Received: from localhost.localdomain ([2001:861:44c0:66c0:d31f:1512:8915:e439]) by smtp.gmail.com with ESMTPSA id b19sm5342680wmj.9.2021.10.20.05.39.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Oct 2021 05:39:54 -0700 (PDT) From: Neil Armstrong To: daniel@ffwll.ch, Laurent.pinchart@ideasonboard.com, sam@ravnborg.org Cc: martin.blumenstingl@googlemail.com, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Neil Armstrong Subject: [PATCH v3 4/6] drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR Date: Wed, 20 Oct 2021 14:39:45 +0200 Message-Id: <20211020123947.2585572-5-narmstrong@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211020123947.2585572-1-narmstrong@baylibre.com> References: <20211020123947.2585572-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=7653; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org This implements the necessary change to no more use the embedded connector in dw-hdmi and use the dedicated bridge connector driver by passing DRM_BRIDGE_ATTACH_NO_CONNECTOR to the bridge attach call. The necessary connector properties are added to handle the same functionalities as the embedded dw-hdmi connector, i.e. the HDR metadata, the CEC notifier & other flags. The dw-hdmi output_port is set to 1 in order to look for a connector next bridge in order to get DRM_BRIDGE_ATTACH_NO_CONNECTOR working. Signed-off-by: Neil Armstrong Acked-by: Sam Ravnborg Acked-by: Martin Blumenstingl --- drivers/gpu/drm/meson/Kconfig | 2 + drivers/gpu/drm/meson/meson_dw_hdmi.c | 1 + drivers/gpu/drm/meson/meson_encoder_hdmi.c | 81 +++++++++++++++++++++- 3 files changed, 82 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/meson/Kconfig b/drivers/gpu/drm/meson/Kconfig index 9f9281dd49f8..a4e1ed96e5e8 100644 --- a/drivers/gpu/drm/meson/Kconfig +++ b/drivers/gpu/drm/meson/Kconfig @@ -6,9 +6,11 @@ config DRM_MESON select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER select DRM_GEM_CMA_HELPER + select DRM_DISPLAY_CONNECTOR select VIDEOMODE_HELPERS select REGMAP_MMIO select MESON_CANVAS + select CEC_CORE if CEC_NOTIFIER config DRM_MESON_DW_HDMI tristate "HDMI Synopsys Controller support for Amlogic Meson Display" diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c index fb540a503efe..5cd2b2ebbbd3 100644 --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c @@ -803,6 +803,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master, dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709; dw_plat_data->ycbcr_420_allowed = true; dw_plat_data->disable_cec = true; + dw_plat_data->output_port = 1; if (dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-gxl-dw-hdmi") || dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-gxm-dw-hdmi") || diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c index 2e73e19d8887..156cb43735f7 100644 --- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c +++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c @@ -14,8 +14,11 @@ #include #include +#include + #include #include +#include #include #include #include @@ -33,8 +36,10 @@ struct meson_encoder_hdmi { struct drm_encoder encoder; struct drm_bridge bridge; struct drm_bridge *next_bridge; + struct drm_connector *connector; struct meson_drm *priv; unsigned long output_bus_fmt; + struct cec_notifier *cec_notifier; }; #define bridge_to_meson_encoder_hdmi(x) \ @@ -49,6 +54,14 @@ static int meson_encoder_hdmi_attach(struct drm_bridge *bridge, &encoder_hdmi->bridge, flags); } +static void meson_encoder_hdmi_detach(struct drm_bridge *bridge) +{ + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge); + + cec_notifier_conn_unregister(encoder_hdmi->cec_notifier); + encoder_hdmi->cec_notifier = NULL; +} + static void meson_encoder_hdmi_set_vclk(struct meson_encoder_hdmi *encoder_hdmi, const struct drm_display_mode *mode) { @@ -297,9 +310,30 @@ static int meson_encoder_hdmi_atomic_check(struct drm_bridge *bridge, return 0; } +static void meson_encoder_hdmi_hpd_notify(struct drm_bridge *bridge, + enum drm_connector_status status) +{ + struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge); + struct edid *edid; + + if (!encoder_hdmi->cec_notifier) + return; + + if (status == connector_status_connected) { + edid = drm_bridge_get_edid(encoder_hdmi->next_bridge, encoder_hdmi->connector); + if (!edid) + return; + + cec_notifier_set_phys_addr_from_edid(encoder_hdmi->cec_notifier, edid); + } else + cec_notifier_phys_addr_invalidate(encoder_hdmi->cec_notifier); +} + static const struct drm_bridge_funcs meson_encoder_hdmi_bridge_funcs = { .attach = meson_encoder_hdmi_attach, + .detach = meson_encoder_hdmi_detach, .mode_valid = meson_encoder_hdmi_mode_valid, + .hpd_notify = meson_encoder_hdmi_hpd_notify, .atomic_enable = meson_encoder_hdmi_atomic_enable, .atomic_disable = meson_encoder_hdmi_atomic_disable, .atomic_get_input_bus_fmts = meson_encoder_hdmi_get_inp_bus_fmts, @@ -312,6 +346,7 @@ static const struct drm_bridge_funcs meson_encoder_hdmi_bridge_funcs = { int meson_encoder_hdmi_init(struct meson_drm *priv) { struct meson_encoder_hdmi *meson_encoder_hdmi; + struct platform_device *pdev; struct device_node *remote; int ret; @@ -336,6 +371,7 @@ int meson_encoder_hdmi_init(struct meson_drm *priv) meson_encoder_hdmi->bridge.funcs = &meson_encoder_hdmi_bridge_funcs; meson_encoder_hdmi->bridge.of_node = priv->dev->of_node; meson_encoder_hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; + meson_encoder_hdmi->bridge.interlace_allowed = true; drm_bridge_add(&meson_encoder_hdmi->bridge); @@ -352,17 +388,58 @@ int meson_encoder_hdmi_init(struct meson_drm *priv) meson_encoder_hdmi->encoder.possible_crtcs = BIT(0); /* Attach HDMI Encoder Bridge to Encoder */ - ret = drm_bridge_attach(&meson_encoder_hdmi->encoder, &meson_encoder_hdmi->bridge, NULL, 0); + ret = drm_bridge_attach(&meson_encoder_hdmi->encoder, &meson_encoder_hdmi->bridge, NULL, + DRM_BRIDGE_ATTACH_NO_CONNECTOR); if (ret) { dev_err(priv->dev, "Failed to attach bridge: %d\n", ret); return ret; } + /* Initialize & attach Bridge Connector */ + meson_encoder_hdmi->connector = drm_bridge_connector_init(priv->drm, + &meson_encoder_hdmi->encoder); + if (IS_ERR(meson_encoder_hdmi->connector)) { + dev_err(priv->dev, "Unable to create HDMI bridge connector\n"); + return PTR_ERR(meson_encoder_hdmi->connector); + } + drm_connector_attach_encoder(meson_encoder_hdmi->connector, + &meson_encoder_hdmi->encoder); + /* * We should have now in place: - * encoder->[hdmi encoder bridge]->[dw-hdmi bridge]->[dw-hdmi connector] + * encoder->[hdmi encoder bridge]->[dw-hdmi bridge]->[display connector bridge]->[display connector] */ + /* + * drm_connector_attach_max_bpc_property() requires the + * connector to have a state. + */ + drm_atomic_helper_connector_reset(meson_encoder_hdmi->connector); + + if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL) || + meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) || + meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) + drm_connector_attach_hdr_output_metadata_property(meson_encoder_hdmi->connector); + + drm_connector_attach_max_bpc_property(meson_encoder_hdmi->connector, 8, 8); + + /* Handle this here until handled by drm_bridge_connector_init() */ + meson_encoder_hdmi->connector->ycbcr_420_allowed = true; + + pdev = of_find_device_by_node(remote); + if (pdev) { + struct cec_connector_info conn_info; + struct cec_notifier *notifier; + + cec_fill_conn_info_from_drm(&conn_info, meson_encoder_hdmi->connector); + + notifier = cec_notifier_conn_register(&pdev->dev, NULL, &conn_info); + if (!notifier) + return -ENOMEM; + + meson_encoder_hdmi->cec_notifier = notifier; + } + dev_dbg(priv->dev, "HDMI encoder initialized\n"); return 0; -- 2.25.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic