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 X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 88418C3567B for ; Mon, 24 Feb 2020 09:11:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EF4820828 for ; Mon, 24 Feb 2020 09:11:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cerno.tech header.i=@cerno.tech header.b="Gt/Gy4Bp"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="T0coblBB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728301AbgBXJKm (ORCPT ); Mon, 24 Feb 2020 04:10:42 -0500 Received: from wnew3-smtp.messagingengine.com ([64.147.123.17]:44695 "EHLO wnew3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728278AbgBXJKi (ORCPT ); Mon, 24 Feb 2020 04:10:38 -0500 Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.west.internal (Postfix) with ESMTP id 898B460C; Mon, 24 Feb 2020 04:10:36 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 24 Feb 2020 04:10:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm2; bh=pOCJc/HnVC85j 3Vx5lFWCuSpF1HH1ynuNc1kT5PDq8s=; b=Gt/Gy4BpGti69mGkbTAfXSfVVKPrw A2QYxtr4b1B0QDpNgQ+K1Ahbhpk1PZUDUfBCbF2ZNpufOiMsmmdTzXETBCaZP4Qe WRnKNXxcBHyDblYC6icms5YP1Ub+88wlncQHcOfSEPzMe+R8Kq/TkI51fNvuObn/ hZAFEV8AQYdDpzwr5Y9/s8wGy56a9k1FdjwUhcpieYSv3AiYgl3G3HFk04oimcss A/IoXsm0PV2J0GFc5BcNHiiG6RCV3Zo+6p5q/WV5QRkbSCZu2jhvvBIs4CxVcA2v k1OteH4Uuyo6XHdgj3cW69nrGlrJjcscKCNYMiczNU6DO4x103KRqfA3g== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=pOCJc/HnVC85j3Vx5lFWCuSpF1HH1ynuNc1kT5PDq8s=; b=T0coblBB gXwVph/dNGdu7LAlrJZvXLeweaYgajfNcVFZbcyJ4XV/u11LvqCb+xPJwTYbuBFa +UmG+4lRTbkrQLX7oSBErfbEH+8gjbZgQ+HGJKFVWuhFrJW9l5ZZwSKEYs9o+NF7 a36mSVL0tb0k8DSMaRVnXDEG3SmrRJ3cwgBUBNc9nvja5hLupU06Vg5BFXCDOPbu doLwEvjyJmjA2FuaMph7S5skHAIyCTNb6hYfxRwpWQ+9e6rMvqIo2wQPksztft0O Zvgj9Nbwx48W8kBgJZkfCKHmjOImJTtwvvEwGFyfO1sXlX9HFCw5XwVvJNiS75Sr 1yd8awgmmW1eQw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedugedrledtucetufdoteggodetrfdotffvucfrrh hofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgenuceurghi lhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurh ephffvufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpeforgigihhmvgcutfhi phgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecukfhppeeltddrkeelrd eikedrjeeinecuvehluhhsthgvrhfuihiivgepuddunecurfgrrhgrmhepmhgrihhlfhhr ohhmpehmrgigihhmvgestggvrhhnohdrthgvtghh X-ME-Proxy: Received: from localhost (lfbn-tou-1-1502-76.w90-89.abo.wanadoo.fr [90.89.68.76]) by mail.messagingengine.com (Postfix) with ESMTPA id C8FB8328005A; Mon, 24 Feb 2020 04:10:35 -0500 (EST) From: Maxime Ripard To: Nicolas Saenz Julienne , Eric Anholt Cc: dri-devel@lists.freedesktop.org, linux-rpi-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Dave Stevenson , Tim Gover , Phil Elwell , Maxime Ripard Subject: [PATCH 74/89] drm/vc4: hdmi: Add reset callback Date: Mon, 24 Feb 2020 10:07:16 +0100 Message-Id: <6d50802a495fffc2ff4144ea3252d8952d9dd1b4.1582533919.git-series.maxime@cerno.tech> X-Mailer: git-send-email 2.24.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The BCM2711 and BCM283x HDMI controllers use a slightly different reset sequence, so let's add a callback to reset the controller. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_hdmi.c | 17 ++++++++++++----- drivers/gpu/drm/vc4/vc4_hdmi.h | 3 +++ 2 files changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 0e8cf0eb1891..29e94eee9f23 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -68,6 +68,15 @@ static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused) return 0; } +static void vc4_hdmi_reset(struct vc4_hdmi *vc4_hdmi) +{ + HDMI_WRITE(HDMI_SW_RESET_CONTROL, + VC4_HDMI_SW_RESET_HDMI | + VC4_HDMI_SW_RESET_FORMAT_DETECT); + + HDMI_WRITE(HDMI_SW_RESET_CONTROL, 0); +} + static enum drm_connector_status vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) { @@ -371,11 +380,8 @@ static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder) return; } - HDMI_WRITE(HDMI_SW_RESET_CONTROL, - VC4_HDMI_SW_RESET_HDMI | - VC4_HDMI_SW_RESET_FORMAT_DETECT); - - HDMI_WRITE(HDMI_SW_RESET_CONTROL, 0); + if (vc4_hdmi->variant->reset) + vc4_hdmi->variant->reset(vc4_hdmi); /* PHY should be in reset, like * vc4_hdmi_encoder_disable() does. @@ -1406,6 +1412,7 @@ struct vc4_hdmi_variant bcm2835_variant = { .num_registers = ARRAY_SIZE(vc4_hdmi_fields), .init_resources = vc4_hdmi_init_resources, + .reset = vc4_hdmi_reset, }; static const struct of_device_id vc4_hdmi_dt_match[] = { diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index f4c052a78802..270397c9e800 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -34,6 +34,9 @@ struct vc4_hdmi_variant { * clocks, etc) for that variant. */ int (*init_resources)(struct vc4_hdmi *vc4_hdmi); + + /* Callback to reset the HDMI block */ + void (*reset)(struct vc4_hdmi *vc4_hdmi); }; /* HDMI audio information */ -- git-series 0.9.1