From patchwork Thu Aug 5 14:07:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H. Nikolaus Schaller" X-Patchwork-Id: 12421205 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 09E8DC432BE for ; Thu, 5 Aug 2021 14:08:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E70C661155 for ; Thu, 5 Aug 2021 14:08:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241806AbhHEOIe (ORCPT ); Thu, 5 Aug 2021 10:08:34 -0400 Received: from mo4-p03-ob.smtp.rzone.de ([81.169.146.175]:32112 "EHLO mo4-p03-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241858AbhHEOIc (ORCPT ); Thu, 5 Aug 2021 10:08:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1628172482; s=strato-dkim-0002; d=goldelico.com; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=PNoL+uPVa/EtHg8cMcNNaXbR5Yr+tlsCZB8IjNiOBAo=; b=BYI6GFQiQ0/O6qeruCCHcB2wP1mr7YZxWz0Z5h73o1GumChAnyLoomlS6dlUfIrltM Tk6OukO7+yOd9FyA5Cchdi1EqXMYnpnZ5tR+YOBa0Eeuj+Rs2GskyiJdgkWmuaMRbWs0 26BXQDfsZbJxvuNfFUBR2mn/uOip8SLevjcEnRO88rIEQAvl9eDuhCHt2fOQIlJT9dvY gYdQpl9j01wJZvfSaW9DAL2uRtjhWqv8o0hJMWxTE5Q7vNw7lna4cd/w6HIaI3ggfrTt hQEqZJbGIvOP9FP40mwrCyhA6vVsJAbc8pb6InGEcv8h0kxjoZDprZI6SYoRxOCldUeS jbJg== Authentication-Results: strato.com; dkim=none X-RZG-AUTH: ":JGIXVUS7cutRB/49FwqZ7WcJeFKiMhflhwDubTJ9o12DNOsPj0lByOdbLzk=" X-RZG-CLASS-ID: mo00 Received: from iMac.fritz.box by smtp.strato.de (RZmta 47.31.0 DYNA|AUTH) with ESMTPSA id Q02727x75E81782 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Thu, 5 Aug 2021 16:08:01 +0200 (CEST) From: "H. Nikolaus Schaller" To: Paul Cercueil , Rob Herring , Mark Rutland , Thomas Bogendoerfer , "H. Nikolaus Schaller" , Geert Uytterhoeven , Kees Cook , "Eric W. Biederman" , Miquel Raynal , David Airlie , Daniel Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jernej Skrabec , Ezequiel Garcia , Harry Wentland , Sam Ravnborg , Maxime Ripard , Hans Verkuil Cc: devicetree@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org, Paul Boddie , Jonas Karlman , dri-devel@lists.freedesktop.org Subject: [PATCH v2 2/8] drm/ingenic: Add jz4780 Synopsys HDMI driver Date: Thu, 5 Aug 2021 16:07:51 +0200 Message-Id: X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Paul Boddie A specialisation of the generic Synopsys HDMI driver is employed for JZ4780 HDMI support. This requires a new driver, plus device tree and configuration modifications. Signed-off-by: Paul Boddie Signed-off-by: Ezequiel Garcia Signed-off-by: H. Nikolaus Schaller --- drivers/gpu/drm/ingenic/Kconfig | 9 ++ drivers/gpu/drm/ingenic/Makefile | 1 + drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c | 121 ++++++++++++++++++++++ 3 files changed, 131 insertions(+) create mode 100644 drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c diff --git a/drivers/gpu/drm/ingenic/Kconfig b/drivers/gpu/drm/ingenic/Kconfig index 3b57f8be007c4..4c7d311fbefff 100644 --- a/drivers/gpu/drm/ingenic/Kconfig +++ b/drivers/gpu/drm/ingenic/Kconfig @@ -25,4 +25,13 @@ config DRM_INGENIC_IPU The Image Processing Unit (IPU) will appear as a second primary plane. +config DRM_INGENIC_DW_HDMI + bool "Ingenic specific support for Synopsys DW HDMI" + depends on MACH_JZ4780 + select DRM_DW_HDMI + help + Choose this option to enable Synopsys DesignWare HDMI based driver. + If you want to enable HDMI on Ingenic JZ4780 based SoC, you should + select this option.. + endif diff --git a/drivers/gpu/drm/ingenic/Makefile b/drivers/gpu/drm/ingenic/Makefile index d313326bdddbb..3db9888a6c046 100644 --- a/drivers/gpu/drm/ingenic/Makefile +++ b/drivers/gpu/drm/ingenic/Makefile @@ -1,3 +1,4 @@ obj-$(CONFIG_DRM_INGENIC) += ingenic-drm.o ingenic-drm-y = ingenic-drm-drv.o ingenic-drm-$(CONFIG_DRM_INGENIC_IPU) += ingenic-ipu.o +ingenic-drm-$(CONFIG_DRM_INGENIC_DW_HDMI) += ingenic-dw-hdmi.o diff --git a/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c new file mode 100644 index 0000000000000..61e7a57d7cec1 --- /dev/null +++ b/drivers/gpu/drm/ingenic/ingenic-dw-hdmi.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. + * Copyright (C) 2019, 2020 Paul Boddie + * + * Derived from dw_hdmi-imx.c with i.MX portions removed. + * Probe and remove operations derived from rcar_dw_hdmi.c. + */ + +#include +#include +#include + +#include +#include + +static const struct dw_hdmi_mpll_config ingenic_mpll_cfg[] = { + { 45250000, { { 0x01e0, 0x0000 }, { 0x21e1, 0x0000 }, { 0x41e2, 0x0000 } } }, + { 92500000, { { 0x0140, 0x0005 }, { 0x2141, 0x0005 }, { 0x4142, 0x0005 } } }, + { 148500000, { { 0x00a0, 0x000a }, { 0x20a1, 0x000a }, { 0x40a2, 0x000a } } }, + { 216000000, { { 0x00a0, 0x000a }, { 0x2001, 0x000f }, { 0x4002, 0x000f } } }, + { ~0UL, { { 0x0000, 0x0000 }, { 0x0000, 0x0000 }, { 0x0000, 0x0000 } } } +}; + +static const struct dw_hdmi_curr_ctrl ingenic_cur_ctr[] = { + /*pixelclk bpp8 bpp10 bpp12 */ + { 54000000, { 0x091c, 0x091c, 0x06dc } }, + { 58400000, { 0x091c, 0x06dc, 0x06dc } }, + { 72000000, { 0x06dc, 0x06dc, 0x091c } }, + { 74250000, { 0x06dc, 0x0b5c, 0x091c } }, + { 118800000, { 0x091c, 0x091c, 0x06dc } }, + { 216000000, { 0x06dc, 0x0b5c, 0x091c } }, + { ~0UL, { 0x0000, 0x0000, 0x0000 } }, +}; + +/* + * Resistance term 133Ohm Cfg + * PREEMP config 0.00 + * TX/CK level 10 + */ +static const struct dw_hdmi_phy_config ingenic_phy_config[] = { + /*pixelclk symbol term vlev */ + { 216000000, 0x800d, 0x0005, 0x01ad}, + { ~0UL, 0x0000, 0x0000, 0x0000} +}; + +static enum drm_mode_status +ingenic_dw_hdmi_mode_valid(struct dw_hdmi *hdmi, void *data, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + if (mode->clock < 13500) + return MODE_CLOCK_LOW; + /* FIXME: Hardware is capable of 270MHz, but setup data is missing. */ + if (mode->clock > 216000) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + +static bool +ingenic_dw_hdmi_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adjusted_mode) +{ + adjusted_mode->flags |= (DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC); + adjusted_mode->flags &= ~(DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC); + + return true; +} + +static const struct drm_bridge_timings ingenic_dw_hdmi_timings = { + .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE, +}; + +static struct dw_hdmi_plat_data ingenic_dw_hdmi_plat_data = { + .mpll_cfg = ingenic_mpll_cfg, + .cur_ctr = ingenic_cur_ctr, + .phy_config = ingenic_phy_config, + .mode_valid = ingenic_dw_hdmi_mode_valid, + .mode_fixup = ingenic_dw_hdmi_mode_fixup, + .timings = &ingenic_dw_hdmi_timings, +}; + +static const struct of_device_id ingenic_dw_hdmi_dt_ids[] = { + { .compatible = "ingenic,jz4780-dw-hdmi" }, + { /* Sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, ingenic_dw_hdmi_dt_ids); + +static int ingenic_dw_hdmi_probe(struct platform_device *pdev) +{ + struct dw_hdmi *hdmi; + + hdmi = dw_hdmi_probe(pdev, &ingenic_dw_hdmi_plat_data); + if (IS_ERR(hdmi)) + return PTR_ERR(hdmi); + + platform_set_drvdata(pdev, hdmi); + + return 0; +} + +static int ingenic_dw_hdmi_remove(struct platform_device *pdev) +{ + struct dw_hdmi *hdmi = platform_get_drvdata(pdev); + + dw_hdmi_remove(hdmi); + + return 0; +} + +static struct platform_driver ingenic_dw_hdmi_driver = { + .probe = ingenic_dw_hdmi_probe, + .remove = ingenic_dw_hdmi_remove, + .driver = { + .name = "dw-hdmi-ingenic", + .of_match_table = ingenic_dw_hdmi_dt_ids, + }, +}; + +struct platform_driver *ingenic_dw_hdmi_driver_ptr = &ingenic_dw_hdmi_driver;