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Fri, 16 Apr 2021 02:27:42 -0700 (PDT) From: Neil Armstrong To: jonas@kwiboo.se, jernej.skrabec@siol.net, robert.foss@linaro.org, Laurent.pinchart@ideasonboard.com Cc: 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 1/2] drm/bridge/synopsys: dw-hdmi: Add an option to suppress loading CEC driver Date: Fri, 16 Apr 2021 11:27:36 +0200 Message-Id: <20210416092737.1971876-2-narmstrong@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210416092737.1971876-1-narmstrong@baylibre.com> References: <20210416092737.1971876-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-Patch-Hashes: v=1; h=sha256; i=Y2Kp96dW3X0U27vNrMM/XkOOWYrIUuOu1Mi+zc7UuTs=; m=8YzxMzRM2R/oOFCOZbnFjWww/0CRXwSKJOS10A7bahU=; p=In2Hgqc+nqwSrOrGnpYjxqY39B1rnskpZvUG56iaipo=; g=1623597293b4caa25ab43c3fbd39773cfca1dd42 X-Patch-Sig: m=pgp; i=narmstrong@baylibre.com; s=0xA4CFF8AE; b=iQIzBAABCgAdFiEEPVPGJshWBf4d9CyLd9zb2sjISdEFAmB5WDgACgkQd9zb2sjISdF0zxAAsPF S9X840FovT4celkzqEHde6wQVRpNvUWE4KfpsyuthouG4Ogh7m+mtKyMmMmQER6NI98m6UNn3Xbw5 Qx99KHfaJJIDzeVKrURJGlExHSEpMuPeHdJ0RAe7bLK9WQEQPtzxAOjV6Fv1laxc0C3c0dOfy8vr4 JZX5oSKvz9oZ6X4ORBzl2Ighs0m1oNE6+fVDA/Go3PF9hK75cBWYIkms1I+K8tbvzEzZ/qZHYkJMM 7MdZj+Z8QXTj3HtlH0D3/Ir+WsE8g6vWtPbpiCYZQN20Qba8AIbNzlVgl5W4Bp9Ui+L/fbej+SOpF aEBcnw6wNLiKHAL3TxQDO8vkBR+JtaUespcIgE+/lqPeRJ7hsAfbsopzmkOz7kY6HCLvbAKtSlZbZ DhO86B1AKA7zjpTtuW+LijHIpzcK4kY7MRwuh+pFxFjOUv35K25z56vjnxJmLjo6zKyuhDR6WiFAY gscXpmhObHHjk36uTWeTJr87NINY7CH0pBu9ZFSzSp01gkLMx4phDLjm0+JayYtEWb3C4TQ7JEMT6 83Pdk0v0cAmx9Zef/LH5+R5kpZDsDpIJ7MeGQOrHUqbzKJF7K9EFKhDwaxXbSJKhCaEp+AKawxo1e xNymIxJyVDqU92s+pABPeTAYzotm3k9rcTGAjvOMAJe4zZlBjgZxL2N8piBFhgP8= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210416_022743_992793_428E0D90 X-CRM114-Status: GOOD ( 16.98 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Jernej Skrabec This adds DW-HDMI driver a glue option to disable loading of the CEC sub-driver. On some SoCs, the CEC functionality is enabled in the IP config bits, but the CEC bus is non-functional like on Amlogic SoCs, where the CEC config bit is set but the DW-HDMI CEC signal is not connected to a physical pin, leading to some confusion when the DW-HDMI CEC controller can't communicate on the bus. Reviewed-by: Neil Armstrong Signed-off-by: Jernej Skrabec Signed-off-by: Neil Armstrong --- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 2 +- include/drm/bridge/dw_hdmi.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index dda4fa9a1a08..ae97513ef886 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -3421,7 +3421,7 @@ struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, hdmi->audio = platform_device_register_full(&pdevinfo); } - if (config0 & HDMI_CONFIG0_CEC) { + if (!plat_data->disable_cec && (config0 & HDMI_CONFIG0_CEC)) { cec.hdmi = hdmi; cec.ops = &dw_hdmi_cec_ops; cec.irq = irq; diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h index ea34ca146b82..6a5716655619 100644 --- a/include/drm/bridge/dw_hdmi.h +++ b/include/drm/bridge/dw_hdmi.h @@ -153,6 +153,8 @@ struct dw_hdmi_plat_data { const struct dw_hdmi_phy_config *phy_config; int (*configure_phy)(struct dw_hdmi *hdmi, void *data, unsigned long mpixelclock); + + unsigned int disable_cec : 1; }; struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, From patchwork Fri Apr 16 09:27:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 12207271 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35797C433ED for ; Fri, 16 Apr 2021 09:46:13 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AD1AF6115B for ; 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Fri, 16 Apr 2021 02:27:43 -0700 (PDT) From: Neil Armstrong To: jonas@kwiboo.se, jernej.skrabec@siol.net, robert.foss@linaro.org, Laurent.pinchart@ideasonboard.com Cc: 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 2/2] drm/meson: dw-hdmi: disable DW-HDMI CEC sub-driver Date: Fri, 16 Apr 2021 11:27:37 +0200 Message-Id: <20210416092737.1971876-3-narmstrong@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210416092737.1971876-1-narmstrong@baylibre.com> References: <20210416092737.1971876-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-Patch-Hashes: v=1; h=sha256; i=AIXqGHKTvAxrfKSlg1n3zbWJ5IG5DkS6Kb91/enRWC0=; m=2JvXyHbVOdgr08yx3xTtTb2RALrmH6WvCQut165FoNE=; p=ALx7NrZjStGjkcT7P2hXJBXnDsBMqDSSAFEUG8wpqV4=; g=4e6918702c99f2fd53451a77865692eeb1ce6f11 X-Patch-Sig: m=pgp; i=narmstrong@baylibre.com; s=0xA4CFF8AE; b=iQIzBAABCgAdFiEEPVPGJshWBf4d9CyLd9zb2sjISdEFAmB5WDsACgkQd9zb2sjISdEMNg//eHW wLuyr89JyKh095fVg/U17vGXWCLJ4CoUOcvalJ7GqQfF094VlAnboFML2V1x97mGiXL9dEWzIXIU7 njtgfXlKA0lczx6uhZMbkD6YoCRHxvLZ4I3oWcCl1hZnKlhUgysO7Kp5RPAGRVQgNxkopRLK5LBYo DqmIEfvh976jxGsRdydHIgt3xKSGYV9JLj57+PP6WbnD0MHOm5EJLRettmjVJl39NzW6kbvlZJxrz n/vbP1ydH7Mf11NeHGkzi24eCx79FuAbCKIFdfIoZREybjXGjoE9guX4LKHbrzznFx1H12emkMucS cZ6EDw8V0rEtZJBQnib6MllzAp2cSEsA07NTn8/m6SlDxFPh/ZyHKfgJisY2bclJAzgJAWyj+/oxl 1aliLRovtOP6qej39sYRMp8S9RBADFdmqamr+B2CbqH23odahkg2MbuSfm5X5tKeqOVlwsMnNMi+C NV9df8kcJvjTx/A7ypWeZdZNa4Lp84bRYKMXE1kGpBCz2HaWN6qQmEOaODqGyY/w/RADuPRcc6Yxc 8pqefJFUx7qK7YiV+gHcw7xI2z2FNcR+D+VTpSVHJNsOYMn2Up7wjyySgCZzOBGTgAwqkIBDeyccR brk9G1Fu3JQMrQqOlguW82Xz+kpfjxjAVsuszHdttk/bhsHqpvgjO+ka4JHEWzSE= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210416_022745_064284_258EE178 X-CRM114-Status: GOOD ( 11.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On the Amlogic SoCs, the DW-HDMI HW support is here but the DW-HDMI CEC signal is not connected to a physical pin, leading to confusion when the dw-hdmi cec controller can't communicate on the bus. Disable it to avoid exposing a non-functinal bus. Signed-off-by: Neil Armstrong --- drivers/gpu/drm/meson/meson_dw_hdmi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c index aad75a22dc33..2ed87cfdd735 100644 --- a/drivers/gpu/drm/meson/meson_dw_hdmi.c +++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c @@ -1103,6 +1103,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master, dw_plat_data->phy_data = meson_dw_hdmi; dw_plat_data->input_bus_encoding = V4L2_YCBCR_ENC_709; dw_plat_data->ycbcr_420_allowed = true; + dw_plat_data->disable_cec = true; 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") ||