From patchwork Wed May 27 15:48:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 11575135 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 78EAF13B4 for ; Thu, 28 May 2020 07:47:07 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 576A4208E4 for ; Thu, 28 May 2020 07:47:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=cerno.tech header.i=@cerno.tech header.b="sVRlM84x"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="J2/RQ2kR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 576A4208E4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=cerno.tech Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C2BA26E4B5; Thu, 28 May 2020 07:44:08 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from new1-smtp.messagingengine.com (new1-smtp.messagingengine.com [66.111.4.221]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6A5E96E33C for ; Wed, 27 May 2020 15:51:27 +0000 (UTC) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.nyi.internal (Postfix) with ESMTP id D3F575814F9; Wed, 27 May 2020 11:51:26 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Wed, 27 May 2020 11:51:26 -0400 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=Qt9/P4yukHV2B TUxxyxl9vY352xX2ptPfPzVLjzzRFg=; b=sVRlM84xe3TyV0NPrwgJBwH7ZsZAM MklsRzKl5y8mqAaxIjVJfMCCzXWCLoLw1lOiDVR38y92KDT6erd1dxqbpFAuOcYs jD/IUd/4Idc5i2IxJbNEGSjWbrqtEMpAiPiXE39KOK3SbaOcOI/WcuFxdRmXAL1A iTv55a9sIv3Vsi+GDw6zEZ9nB+WeDuDKIkb+MsiERKL81YitJRKiW4RQHRsg2Rzz CECGngwsNIZSfIc87ba/VPw43Ga26aSEMfYJVWUJYXtbnYvZUfE+IYvAXhJPJmWu Yqk9wEFkhriC5aehnjBkZQFZYwTfkq7ajlWbKo9IwNLADp4dPgHTpEhJw== 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=Qt9/P4yukHV2BTUxxyxl9vY352xX2ptPfPzVLjzzRFg=; b=J2/RQ2kR v98ruPKOf6pL1rocIL6Qq8IONCT+Kdz5cO+nRBnjzH2xmuhp9on7iQg89CSLJb53 vPIkM01yg1d/uBJ9o0dvthq92FCAmYpWzknhKor+0T+wwK2kdkhZivE9mpj0FjaX sussLiepjHxHgLfmKlHqMWwXQuPH0RrUvwmCsGAvLVNVj9WWxwGkI0aE/QzyqduG qW2KRRQWeLoomrhsQFfi0Z8OCtuQ49+hXX2LsgzrwDS9TYmolUqVCxsO9EYoc6ze nQspnsjEVD1w0mcEb8RZbQw1R8Yc/hFKryjuy/k7oT+CkItQl9K8dKS5bIpiMaMy 0p6+2Oqu8Wklkg== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedruddvgedgkeegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpeforgigihhm vgcutfhiphgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecuggftrfgrth htvghrnhepvdekleevfeffkeejhfffueelteelfeduieefheduudfggffhhfffheevveeh hedvnecukfhppeeltddrkeelrdeikedrjeeinecuvehluhhsthgvrhfuihiivgepheelne curfgrrhgrmhepmhgrihhlfhhrohhmpehmrgigihhmvgestggvrhhnohdrthgvtghh 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 70284328005E; Wed, 27 May 2020 11:51:26 -0400 (EDT) From: Maxime Ripard To: Nicolas Saenz Julienne , Eric Anholt Subject: [PATCH v3 082/105] drm/vc4: hdmi: Add PHY init and disable function Date: Wed, 27 May 2020 17:48:52 +0200 Message-Id: X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 28 May 2020 07:43:53 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Tim Gover , Dave Stevenson , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Phil Elwell , linux-arm-kernel@lists.infradead.org, Maxime Ripard Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The HDMI PHY in the BCM2711 HDMI controller is significantly more complicated to setup than in the older BCM283x SoCs. Let's add hooks to enable and disable the PHY. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/Makefile | 1 + drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++------- drivers/gpu/drm/vc4/vc4_hdmi.h | 13 +++++++++++++ drivers/gpu/drm/vc4/vc4_hdmi_phy.c | 25 +++++++++++++++++++++++++ 4 files changed, 46 insertions(+), 7 deletions(-) create mode 100644 drivers/gpu/drm/vc4/vc4_hdmi_phy.c diff --git a/drivers/gpu/drm/vc4/Makefile b/drivers/gpu/drm/vc4/Makefile index b303703bc7f3..d0163e18e9ca 100644 --- a/drivers/gpu/drm/vc4/Makefile +++ b/drivers/gpu/drm/vc4/Makefile @@ -12,6 +12,7 @@ vc4-y := \ vc4_kms.o \ vc4_gem.o \ vc4_hdmi.o \ + vc4_hdmi_phy.o \ vc4_vec.o \ vc4_hvs.o \ vc4_irq.o \ diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index dceff505c840..3d5e35aa96ff 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -321,7 +321,9 @@ static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder) HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0); - HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16); + if (vc4_hdmi->variant->phy_disable) + vc4_hdmi->variant->phy_disable(vc4_hdmi); + HDMI_WRITE(HDMI_VID_CTL, HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE); @@ -381,12 +383,8 @@ static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder) if (vc4_hdmi->variant->reset) vc4_hdmi->variant->reset(vc4_hdmi); - /* PHY should be in reset, like - * vc4_hdmi_encoder_disable() does. - */ - HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16); - - HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0); + if (vc4_hdmi->variant->phy_init) + vc4_hdmi->variant->phy_init(vc4_hdmi, mode); if (debug_dump_regs) { struct drm_printer p = drm_info_printer(&vc4_hdmi->pdev->dev); @@ -1414,6 +1412,8 @@ static const struct vc4_hdmi_variant bcm2835_variant = { .init_resources = vc4_hdmi_init_resources, .reset = vc4_hdmi_reset, + .phy_init = vc4_hdmi_phy_init, + .phy_disable = vc4_hdmi_phy_disable, }; 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 93695674c2d3..39ae5273f36b 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -21,6 +21,8 @@ to_vc4_hdmi_encoder(struct drm_encoder *encoder) return container_of(encoder, struct vc4_hdmi_encoder, base.base); } +struct drm_display_mode; + struct vc4_hdmi; struct vc4_hdmi_register; @@ -38,6 +40,13 @@ struct vc4_hdmi_variant { /* Callback to reset the HDMI block */ void (*reset)(struct vc4_hdmi *vc4_hdmi); + + /* Callback to initialize the PHY according to the mode */ + void (*phy_init)(struct vc4_hdmi *vc4_hdmi, + struct drm_display_mode *mode); + + /* Callback to disable the PHY */ + void (*phy_disable)(struct vc4_hdmi *vc4_hdmi); }; /* HDMI audio information */ @@ -95,4 +104,8 @@ encoder_to_vc4_hdmi(struct drm_encoder *encoder) return container_of(_encoder, struct vc4_hdmi, encoder); } +void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, + struct drm_display_mode *mode); +void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi); + #endif /* _VC4_HDMI_H_ */ diff --git a/drivers/gpu/drm/vc4/vc4_hdmi_phy.c b/drivers/gpu/drm/vc4/vc4_hdmi_phy.c new file mode 100644 index 000000000000..5a1746877bb5 --- /dev/null +++ b/drivers/gpu/drm/vc4/vc4_hdmi_phy.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2015 Broadcom + * Copyright (c) 2014 The Linux Foundation. All rights reserved. + * Copyright (C) 2013 Red Hat + * Author: Rob Clark + */ + +#include "vc4_hdmi.h" +#include "vc4_hdmi_regs.h" + +void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi, struct drm_display_mode *mode) +{ + /* PHY should be in reset, like + * vc4_hdmi_encoder_disable() does. + */ + + HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16); + HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0); +} + +void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi) +{ + HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16); +}