From patchwork Fri Apr 24 15:34:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 11509061 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 7D18692A for ; Fri, 24 Apr 2020 20:09:18 +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 5C01820857 for ; Fri, 24 Apr 2020 20:09:18 +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="DdyvYqZw"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="oohT9FK9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5C01820857 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 210D66EB29; Fri, 24 Apr 2020 20:08:30 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from wnew2-smtp.messagingengine.com (wnew2-smtp.messagingengine.com [64.147.123.27]) by gabe.freedesktop.org (Postfix) with ESMTPS id A7BE989F38 for ; Fri, 24 Apr 2020 15:37:08 +0000 (UTC) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.west.internal (Postfix) with ESMTP id AF4C21455; Fri, 24 Apr 2020 11:37:07 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Fri, 24 Apr 2020 11:37:08 -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=HHj2Ct/TQOE8B otW7Nmi0uN46MHYFOx9I7iRnAbqSfg=; b=DdyvYqZwjzH98ujuqL9OmDDTNeLhD 6r2yW5ElA2gNQ79vRSBjcxC6I5QqVMBZQy6rO5Isu5e2ny3EVKkeQU7SNy6OsXai zuwfUiJ7VOjOSGbpd1pUCc62lxm3jOpYwQ5Dbk/7Eh0VBrOF9y4wSkfBWBscbcbC 7QMAIzrDpLvDEcy0sKjfmQ3s+PIl1WClqZ+hic4bsQ99r5PxDPC0TitLhR6n0XgI WzGC0PT1s7Fz9hfbispyD0OgcvsB1MyqnzO1cWLqtw3rFuXkNq+2wdFy7hJEvzcK wbJUXg+CgHjQo42zKY92vo8yr3fqhoOpLRZRP4jNzFP8n0jIR3KoddLZQ== 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=HHj2Ct/TQOE8BotW7Nmi0uN46MHYFOx9I7iRnAbqSfg=; b=oohT9FK9 SLOZHUE3XNhhH14M3/7xB8/l7UBIITgFBPf515U1npWzrJnnT5myBXqzrTwk29NA zCv9szQ+OGI2fBaobroacuNOfsnGUW2djou1ioaM76smT5752l32vBxkff9QkksG c/6aR1GLvJH6kh0pN/DyY0aRky9gOlTD6UUqH7m2WUawoE12HpnqZ+wbDCo1HHlk E7981as7l+wrqjlSN6DVAgBbNRxi7G+DdbQFmwAk5k3vqSOQbQPr5JiBaxz9FD6p 63o5S0NtT+hS5zXNFPUIX8C9EE1T2/4Km5k36hcGDAEHWBKm089cRWJTAbaI/+O5 Qsh95dcbkGJl7w== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrhedugdekiecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhgggfestdekredtredttdenucfhrhhomhepofgrgihimhgv ucftihhprghrugcuoehmrgigihhmvgestggvrhhnohdrthgvtghhqeenucfkphepledtrd ekledrieekrdejieenucevlhhushhtvghrufhiiigvpeeiheenucfrrghrrghmpehmrghi lhhfrhhomhepmhgrgihimhgvsegtvghrnhhordhtvggthh 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 E61C93065D97; Fri, 24 Apr 2020 11:37:06 -0400 (EDT) From: Maxime Ripard To: Nicolas Saenz Julienne , Eric Anholt Subject: [PATCH v2 75/91] drm/vc4: hdmi: Add PHY init and disable function Date: Fri, 24 Apr 2020 17:34:56 +0200 Message-Id: <5ebcf3a94da0eeb23002902822f6fe1eefb43366.1587742492.git-series.maxime@cerno.tech> X-Mailer: git-send-email 2.26.0 In-Reply-To: References: MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 24 Apr 2020 20:08:26 +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 4bd385f86034..b04b18d9417d 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -323,7 +323,9 @@ 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); @@ -383,12 +385,8 @@ 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); @@ -1425,6 +1423,8 @@ 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); +}