From patchwork Fri Feb 28 18:19:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "H. Nikolaus Schaller" X-Patchwork-Id: 204035 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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 5022DC3F2D7 for ; Fri, 28 Feb 2020 18:20:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2276E246B0 for ; Fri, 28 Feb 2020 18:20:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=goldelico.com header.i=@goldelico.com header.b="ShnbsPTe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726733AbgB1STp (ORCPT ); Fri, 28 Feb 2020 13:19:45 -0500 Received: from mo4-p04-ob.smtp.rzone.de ([85.215.255.123]:26074 "EHLO mo4-p04-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725886AbgB1STm (ORCPT ); Fri, 28 Feb 2020 13:19:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1582913979; s=strato-dkim-0002; d=goldelico.com; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=KXDxjYvjEmkF3JyQOKq8VWv0rkPPoGHlQy9Z7iMTutw=; b=ShnbsPTe/Ud6ZycmKuMOJ16E4r7RpmUCPfLYe+IfocTVZM81Nlj3dqer8PHaSL/fdw u3izFC1/hWQQNy0Rx9UBL9pzDIGXn2/OFXtvZ2KKNaBTaLxW6MrWCDCk5dz92LXfgzOQ l0UDyroTTChS6WV4Y+gZAUL6weHXJHs5IKHYb1ue4DhcjRvQ3oFI4Yo2zD4xxsVMNp3/ cojfwWaPPoio9S5B8kJ6r6bM05AsGHuu01FgBnLVNOLz+0MK04FSJTcXyp5lZc6kZM7S fuJxrcqdjqc4fsuM8U8lKbJwxj8Ba0dz1XqaYc0N9Sp9bUOwdnic/6VzfZcGHyZ1+kSw 6OaQ== X-RZG-AUTH: ":JGIXVUS7cutRB/49FwqZ7WcJeFKiMhflhwDubTJ9o1mfYzBGHXH6G1+ULkA=" X-RZG-CLASS-ID: mo00 Received: from iMac.fritz.box by smtp.strato.de (RZmta 46.2.0 DYNA|AUTH) with ESMTPSA id y0a02cw1SIJb2Lq (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 28 Feb 2020 19:19:37 +0100 (CET) From: "H. Nikolaus Schaller" To: Paul Cercueil , Paul Boddie , David Airlie , Daniel Vetter , Rob Herring , Mark Rutland , Ralf Baechle , Paul Burton , Linus Walleij , Andi Kleen , Krzysztof Kozlowski , Geert Uytterhoeven , "Eric W. Biederman" , "H. Nikolaus Schaller" , Miquel Raynal Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-gpio@vger.kernel.org, letux-kernel@openphoenux.org, kernel@pyra-handheld.com Subject: [RFC v2 4/8] drm: ingenic: add jz4780 Synopsys HDMI driver. Date: Fri, 28 Feb 2020 19:19:29 +0100 Message-Id: <818cca0cda7a5dbb29d818468e47681f5882e1e1.1582913973.git.hns@goldelico.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: References: MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@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: H. Nikolaus Schaller --- drivers/gpu/drm/ingenic/Kconfig | 8 ++ drivers/gpu/drm/ingenic/Makefile | 1 + drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c | 120 +++++++++++++++++++++++ 3 files changed, 129 insertions(+) create mode 100644 drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c diff --git a/drivers/gpu/drm/ingenic/Kconfig b/drivers/gpu/drm/ingenic/Kconfig index d82c3d37ec9c..44bfd0d35af1 100644 --- a/drivers/gpu/drm/ingenic/Kconfig +++ b/drivers/gpu/drm/ingenic/Kconfig @@ -14,3 +14,11 @@ config DRM_INGENIC Choose this option for DRM support for the Ingenic SoCs. If M is selected the module will be called ingenic-drm. + +config DRM_DW_HDMI_JZ4780 + tristate "HDMI Support for Ingenic JZ4780" + depends on DRM_INGENIC + depends on OF + select DRM_DW_HDMI + help + Choose this option for HDMI output from the Ingenic JZ4780. diff --git a/drivers/gpu/drm/ingenic/Makefile b/drivers/gpu/drm/ingenic/Makefile index 11cac42ce0bb..238383de63c7 100644 --- a/drivers/gpu/drm/ingenic/Makefile +++ b/drivers/gpu/drm/ingenic/Makefile @@ -1 +1,2 @@ obj-$(CONFIG_DRM_INGENIC) += ingenic-drm.o +obj-$(CONFIG_DRM_DW_HDMI_JZ4780) += dw_hdmi-jz4780.o diff --git a/drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c b/drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c new file mode 100644 index 000000000000..fa379e337263 --- /dev/null +++ b/drivers/gpu/drm/ingenic/dw_hdmi-jz4780.c @@ -0,0 +1,120 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. + * Copyright (C) 2019 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 jz4780_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 jz4780_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 jz4780_phy_config[] = { + /*pixelclk symbol term vlev */ + { 216000000, 0x800d, 0x0005, 0x01ad}, + { ~0UL, 0x0000, 0x0000, 0x0000} +}; + +static enum drm_mode_status +jz4780_hdmi_mode_valid(struct drm_connector *con, + 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 struct dw_hdmi_plat_data jz4780_dw_hdmi_plat_data = { + .mpll_cfg = jz4780_mpll_cfg, + .cur_ctr = jz4780_cur_ctr, + .phy_config = jz4780_phy_config, + .mode_valid = jz4780_hdmi_mode_valid, +}; + +static const struct of_device_id jz4780_dw_hdmi_dt_ids[] = { + { .compatible = "ingenic,jz4780-dw-hdmi" }, + { /* Sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, jz4780_dw_hdmi_dt_ids); + +static int jz4780_dw_hdmi_probe(struct platform_device *pdev) +{ + struct dw_hdmi *hdmi; + + hdmi = dw_hdmi_probe(pdev, &jz4780_dw_hdmi_plat_data); + if (IS_ERR(hdmi)) + return PTR_ERR(hdmi); + + platform_set_drvdata(pdev, hdmi); + + return 0; +} + +static int jz4780_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 jz4780_dw_hdmi_platform_driver = { + .probe = jz4780_dw_hdmi_probe, + .remove = jz4780_dw_hdmi_remove, + .driver = { + .name = "dw-hdmi-jz4780", + .of_match_table = jz4780_dw_hdmi_dt_ids, + }, +}; + +module_platform_driver(jz4780_dw_hdmi_platform_driver); + +MODULE_AUTHOR("Andy Yan "); +MODULE_AUTHOR("Yakir Yang "); +MODULE_AUTHOR("Paul Boddie "); +MODULE_DESCRIPTION("Ingenic JZ4780 DW-HDMI Driver Extension"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:dw-hdmi-jz4780");