From patchwork Mon Oct 25 09:34:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Tang X-Patchwork-Id: 12581145 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0F7CBC433F5 for ; Mon, 25 Oct 2021 09:35:19 +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 C47DB60EB1 for ; Mon, 25 Oct 2021 09:35:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org C47DB60EB1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5C15489D57; Mon, 25 Oct 2021 09:35:17 +0000 (UTC) Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by gabe.freedesktop.org (Postfix) with ESMTPS id A336C89CDE for ; Mon, 25 Oct 2021 09:35:15 +0000 (UTC) Received: by mail-pj1-x1036.google.com with SMTP id v1-20020a17090a088100b001a21156830bso4447831pjc.1 for ; Mon, 25 Oct 2021 02:35:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=teBtg53MXTFq7AUtJX5O3yNYIl2n6q9xqCAFOUYZn9U=; b=hybEKrVTHcOZC/6NdYAxMSIU5TMxIxsPU3CJOKA0bQOG4lORtxwxoZSV5SIIYkQDxk 3kHT3gLyBns20bI3BW8nmbHxjNmyXuMr92EGcnTcOwclx0J3GQNwOm90CIocxyNmOIsc Wz2z5re7zcMlbZg65fJyw26ImtO3G884XzWTMWxCds53D5kPCYyodd6yDsbkWSPbIMsv wwBiwMoZefknx9g3UK64ct7+0G8VJjYG3uh3wsFXdZByD2jQJlxS5f9FCZp23ySczBU/ vyXHbN97NQoQOIlSWshsN9oJh6mykKSa3eGmVQFQhCrfHZh65uHQ/FusDG9r+pdWn3Lw 01Lw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=teBtg53MXTFq7AUtJX5O3yNYIl2n6q9xqCAFOUYZn9U=; b=ml3/heIp574G7beLp5GmZGdAYna5Il6gV/mvhHULz2BiqtDoSXAy4JOp+h4/UAQVis 2iduc6o/lnqlu+vkezvaY07dhCP6UsReozXhqIeKbswrJkf3PcBBtcPA01GcZqqMGOqx w9/CfXeH8R4lDiYLm44B04x9aVpApyJRVB88sateAki3+5wGkwHSGVhzhDI0pfnNTMpN hNvVtf4fYNdr4nRQs4jU/ZELarFLKiW2Uu4hi5GQxkPtkl08Ht7aX2v7eDkRrTunk7L5 bKUHehIwDik8p2L3HKZF/NV0OvJD3Xvys7Xw+JuC8MNmKU8MoixFmGgeIYHWzvgDuiZf H4nw== X-Gm-Message-State: AOAM533+9GgLzAmyl87XP6o8XdCo9MrLGIIUvP/JaeUGuZC0Jp6z3gWI wNvcdZLmg8+pSOxQJquXAwo= X-Google-Smtp-Source: ABdhPJxjlP/2Lehtygv6s3W7cyYdh/djJFGDb6EqR7A+UBOjSiA1TBxxpImpAnASCyyebQ9D+b5F2w== X-Received: by 2002:a17:90a:e7cb:: with SMTP id kb11mr4922365pjb.206.1635154515168; Mon, 25 Oct 2021 02:35:15 -0700 (PDT) Received: from nj08008nbu.spreadtrum.com ([240e:47a:878:6a2:e0f0:8dca:6977:afd5]) by smtp.gmail.com with ESMTPSA id c9sm15446100pgq.58.2021.10.25.02.35.03 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 25 Oct 2021 02:35:14 -0700 (PDT) From: Kevin Tang To: maarten.lankhorst@linux.intel.com, mripard@kernel.org, sean@poorly.run, airlied@linux.ie, daniel@ffwll.ch, robh+dt@kernel.org, mark.rutland@arm.com, kevin3.tang@gmail.com, pony1.wu@gmail.com Cc: orsonzhai@gmail.com, zhang.lyra@gmail.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org Subject: [PATCH v7 2/6] drm/sprd: add Unisoc's drm kms master Date: Mon, 25 Oct 2021 17:34:14 +0800 Message-Id: <20211025093418.20545-3-kevin3.tang@gmail.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20211025093418.20545-1-kevin3.tang@gmail.com> References: <20211025093418.20545-1-kevin3.tang@gmail.com> MIME-Version: 1.0 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Adds drm support for the Unisoc's display subsystem. This is drm kms driver, this driver provides support for the application framework in Android, Yocto and more. Application framework can access Unisoc's display internal peripherals through libdrm or libkms, it's test ok by modetest (DRM/KMS test tool) and Android HWComposer. Cc: Orson Zhai Cc: Chunyan Zhang Signed-off-by: Kevin Tang v4: - Move the devm_drm_dev_alloc to master_ops->bind function. - The managed drmm_mode_config_init() it is no longer necessary for drivers to explicitly call drm_mode_config_cleanup, so delete it. v5: - Remove subdir-ccflgas-y for Makefile. - Keep the selects sorted by alphabet for Kconfig. --- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/sprd/Kconfig | 11 ++ drivers/gpu/drm/sprd/Makefile | 3 + drivers/gpu/drm/sprd/sprd_drm.c | 203 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/sprd/sprd_drm.h | 16 +++ 6 files changed, 236 insertions(+) create mode 100644 drivers/gpu/drm/sprd/Kconfig create mode 100644 drivers/gpu/drm/sprd/Makefile create mode 100644 drivers/gpu/drm/sprd/sprd_drm.c create mode 100644 drivers/gpu/drm/sprd/sprd_drm.h diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 2a926d0de..8220be1b5 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -380,6 +380,8 @@ source "drivers/gpu/drm/xlnx/Kconfig" source "drivers/gpu/drm/gud/Kconfig" +source "drivers/gpu/drm/sprd/Kconfig" + config DRM_HYPERV tristate "DRM Support for Hyper-V synthetic video device" depends on DRM && PCI && MMU && HYPERV diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 0dff40bb8..ec2756806 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -127,3 +127,4 @@ obj-$(CONFIG_DRM_TIDSS) += tidss/ obj-y += xlnx/ obj-y += gud/ obj-$(CONFIG_DRM_HYPERV) += hyperv/ +obj-$(CONFIG_DRM_SPRD) += sprd/ diff --git a/drivers/gpu/drm/sprd/Kconfig b/drivers/gpu/drm/sprd/Kconfig new file mode 100644 index 000000000..726c3e76d --- /dev/null +++ b/drivers/gpu/drm/sprd/Kconfig @@ -0,0 +1,11 @@ +config DRM_SPRD + tristate "DRM Support for Unisoc SoCs Platform" + depends on ARCH_SPRD || COMPILE_TEST + depends on DRM && OF + select DRM_GEM_CMA_HELPER + select DRM_KMS_CMA_HELPER + select DRM_KMS_HELPER + help + Choose this option if you have a Unisoc chipset. + If M is selected the module will be called sprd_drm. + diff --git a/drivers/gpu/drm/sprd/Makefile b/drivers/gpu/drm/sprd/Makefile new file mode 100644 index 000000000..9850f00b8 --- /dev/null +++ b/drivers/gpu/drm/sprd/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-y := sprd_drm.o diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c new file mode 100644 index 000000000..bb87f28f2 --- /dev/null +++ b/drivers/gpu/drm/sprd/sprd_drm.c @@ -0,0 +1,203 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 Unisoc Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "sprd_drm.h" + +#define DRIVER_NAME "sprd" +#define DRIVER_DESC "Spreadtrum SoCs' DRM Driver" +#define DRIVER_DATE "20200201" +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 0 + +static const struct drm_mode_config_helper_funcs sprd_drm_mode_config_helper = { + .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, +}; + +static const struct drm_mode_config_funcs sprd_drm_mode_config_funcs = { + .fb_create = drm_gem_fb_create, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static void sprd_drm_mode_config_init(struct drm_device *drm) +{ + drm->mode_config.min_width = 0; + drm->mode_config.min_height = 0; + drm->mode_config.max_width = 8192; + drm->mode_config.max_height = 8192; + drm->mode_config.allow_fb_modifiers = true; + + drm->mode_config.funcs = &sprd_drm_mode_config_funcs; + drm->mode_config.helper_private = &sprd_drm_mode_config_helper; +} + +DEFINE_DRM_GEM_CMA_FOPS(sprd_drm_fops); + +static struct drm_driver sprd_drm_drv = { + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, + .fops = &sprd_drm_fops, + + /* GEM Operations */ + DRM_GEM_CMA_DRIVER_OPS, + + .name = DRIVER_NAME, + .desc = DRIVER_DESC, + .date = DRIVER_DATE, + .major = DRIVER_MAJOR, + .minor = DRIVER_MINOR, +}; + +static int sprd_drm_bind(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct drm_device *drm; + struct sprd_drm *sprd; + int ret; + + sprd = devm_drm_dev_alloc(dev, &sprd_drm_drv, struct sprd_drm, drm); + if (IS_ERR(sprd)) + return PTR_ERR(sprd); + + drm = &sprd->drm; + platform_set_drvdata(pdev, drm); + + ret = drmm_mode_config_init(drm); + if (ret) + return ret; + + sprd_drm_mode_config_init(drm); + + /* bind and init sub drivers */ + ret = component_bind_all(drm->dev, drm); + if (ret) { + drm_err(drm, "failed to bind all component.\n"); + return ret; + } + + /* vblank init */ + ret = drm_vblank_init(drm, drm->mode_config.num_crtc); + if (ret) { + drm_err(drm, "failed to initialize vblank.\n"); + goto err_unbind_all; + } + + /* reset all the states of crtc/plane/encoder/connector */ + drm_mode_config_reset(drm); + + /* init kms poll for handling hpd */ + drm_kms_helper_poll_init(drm); + + ret = drm_dev_register(drm, 0); + if (ret < 0) + goto err_kms_helper_poll_fini; + + return 0; + +err_kms_helper_poll_fini: + drm_kms_helper_poll_fini(drm); +err_unbind_all: + component_unbind_all(drm->dev, drm); + return ret; +} + +static void sprd_drm_unbind(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + + drm_dev_unregister(drm); + + drm_kms_helper_poll_fini(drm); + + component_unbind_all(drm->dev, drm); +} + +static const struct component_master_ops drm_component_ops = { + .bind = sprd_drm_bind, + .unbind = sprd_drm_unbind, +}; + +static int compare_of(struct device *dev, void *data) +{ + return dev->of_node == data; +} + +static int sprd_drm_probe(struct platform_device *pdev) +{ + return drm_of_component_probe(&pdev->dev, compare_of, &drm_component_ops); +} + +static int sprd_drm_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &drm_component_ops); + return 0; +} + +static void sprd_drm_shutdown(struct platform_device *pdev) +{ + struct drm_device *drm = platform_get_drvdata(pdev); + + if (!drm) { + drm_warn(drm, "drm device is not available, no shutdown\n"); + return; + } + + drm_atomic_helper_shutdown(drm); +} + +static const struct of_device_id drm_match_table[] = { + { .compatible = "sprd,display-subsystem", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, drm_match_table); + +static struct platform_driver sprd_drm_driver = { + .probe = sprd_drm_probe, + .remove = sprd_drm_remove, + .shutdown = sprd_drm_shutdown, + .driver = { + .name = "sprd-drm-drv", + .of_match_table = drm_match_table, + }, +}; + +static struct platform_driver *sprd_drm_drivers[] = { + &sprd_drm_driver, +}; + +static int __init sprd_drm_init(void) +{ + return platform_register_drivers(sprd_drm_drivers, + ARRAY_SIZE(sprd_drm_drivers)); +} + +static void __exit sprd_drm_exit(void) +{ + platform_unregister_drivers(sprd_drm_drivers, + ARRAY_SIZE(sprd_drm_drivers)); +} + +module_init(sprd_drm_init); +module_exit(sprd_drm_exit); + +MODULE_AUTHOR("Leon He "); +MODULE_AUTHOR("Kevin Tang "); +MODULE_DESCRIPTION("Unisoc DRM KMS Master Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/sprd/sprd_drm.h b/drivers/gpu/drm/sprd/sprd_drm.h new file mode 100644 index 000000000..9781fd591 --- /dev/null +++ b/drivers/gpu/drm/sprd/sprd_drm.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 Unisoc Inc. + */ + +#ifndef _SPRD_DRM_H_ +#define _SPRD_DRM_H_ + +#include +#include + +struct sprd_drm { + struct drm_device drm; +}; + +#endif /* _SPRD_DRM_H_ */