From patchwork Thu Nov 22 01:52:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Marek X-Patchwork-Id: 10695151 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C78B61750 for ; Fri, 23 Nov 2018 07:42:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B94C52BCA5 for ; Fri, 23 Nov 2018 07:42:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AD8D02BCBF; Fri, 23 Nov 2018 07:42:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4FEC02BCA5 for ; Fri, 23 Nov 2018 07:42:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 34A676E4D0; Fri, 23 Nov 2018 07:42:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-qk1-x744.google.com (mail-qk1-x744.google.com [IPv6:2607:f8b0:4864:20::744]) by gabe.freedesktop.org (Postfix) with ESMTPS id 410C56E364 for ; Thu, 22 Nov 2018 01:55:34 +0000 (UTC) Received: by mail-qk1-x744.google.com with SMTP id w204so6073385qka.2 for ; Wed, 21 Nov 2018 17:55:34 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=UbtUU0uGb+4XkOIZVnR92WO7SEO1Om5+CdcV75IcPiY=; b=bdH2ZQ0H3x04596BHp171vBjPPjMTH1g91RlL3iFGoFo67zzKQx+shpH71eM1HrTNx UWEOAP1IpPzVZdDvXZdaRYRWxXEgqLlRiWL40MDNDJopiyD7kPlIIZ42hXO8Lxtwddy8 YaOD6Ly4VcvNOjByVaTL6l92QqGL20M2H3neLgu5Pso7I0zWmsWP/mHtDnbsHcpALriy hyvi2buLNoJom1iPp960PxKj5FA/bESMrlc5LtsfePOUvnEFDR22FnvH+jvsb4Io6Nkb l2SkMrPiMb1cfSmr0rxlBHsEUUg30kguWFHYTWgeHbbm7sxOKTLhT7s2K4Gu8mR9+9VH fYQQ== X-Gm-Message-State: AA+aEWaGANaNp62TPayIJFFZDIFSTGR+jKkP5OhbEcV4jwqY0FlN+LxA GEnXDQ243XU80pxHMCMeUFaagw== X-Google-Smtp-Source: AFSGD/VjtX+Y21Yfpvt1q5N3jxrFD88M099ruUnVm1LRtEFxKMmpm7Gxr0f7e7oiTqgiis154ZHTEA== X-Received: by 2002:a37:a288:: with SMTP id l130mr7836084qke.97.1542851733394; Wed, 21 Nov 2018 17:55:33 -0800 (PST) Received: from localhost.localdomain (modemcable014.247-57-74.mc.videotron.ca. [74.57.247.14]) by smtp.gmail.com with ESMTPSA id q15sm25297721qkl.81.2018.11.21.17.55.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Nov 2018 17:55:32 -0800 (PST) From: Jonathan Marek To: freedreno@lists.freedesktop.org Subject: [PATCH v2 5/9] drm/msm: add headless gpu device (for imx5) Date: Wed, 21 Nov 2018 20:52:31 -0500 Message-Id: <20181122015237.14534-5-jonathan@marek.ca> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181122015237.14534-1-jonathan@marek.ca> References: <20181122015237.14534-1-jonathan@marek.ca> X-Mailman-Approved-At: Fri, 23 Nov 2018 07:41:29 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , "open list:DRM DRIVER FOR MSM ADRENO GPU" , open list , "open list:DRM DRIVER FOR MSM ADRENO GPU" , Chris.Healy@zii.aero MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch allows using drm/msm without qcom display hardware. This is especially useful for iMX5 hardware, which has a a2xx GPU but uses the imx-drm driver for display. Signed-off-by: Jonathan Marek --- v2: added commit message and removed unnecessary comment drivers/gpu/drm/msm/Kconfig | 4 ++-- drivers/gpu/drm/msm/msm_debugfs.c | 2 +- drivers/gpu/drm/msm/msm_drv.c | 21 +++++++++++---------- 3 files changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig index 843a9d40c05e..cf549f1ed403 100644 --- a/drivers/gpu/drm/msm/Kconfig +++ b/drivers/gpu/drm/msm/Kconfig @@ -2,7 +2,7 @@ config DRM_MSM tristate "MSM DRM" depends on DRM - depends on ARCH_QCOM || (ARM && COMPILE_TEST) + depends on ARCH_QCOM || SOC_IMX5 || (ARM && COMPILE_TEST) depends on OF && COMMON_CLK depends on MMU select QCOM_MDT_LOADER if ARCH_QCOM @@ -11,7 +11,7 @@ config DRM_MSM select DRM_PANEL select SHMEM select TMPFS - select QCOM_SCM + select QCOM_SCM if ARCH_QCOM select WANT_DEV_COREDUMP select SND_SOC_HDMI_CODEC if SND_SOC select SYNC_FILE diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c index f0da0d3c8a80..1ca99ca356a4 100644 --- a/drivers/gpu/drm/msm/msm_debugfs.c +++ b/drivers/gpu/drm/msm/msm_debugfs.c @@ -235,7 +235,7 @@ int msm_debugfs_init(struct drm_minor *minor) debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root, dev, &msm_gpu_fops); - if (priv->kms->funcs->debugfs_init) { + if (priv->kms && priv->kms->funcs->debugfs_init) { ret = priv->kms->funcs->debugfs_init(priv->kms, minor); if (ret) return ret; diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 9f219e02f3c7..3f35e57202ef 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -344,6 +344,7 @@ static int msm_drm_uninit(struct device *dev) return 0; } +#define KMS_HEADLESS 1 #define KMS_MDP4 4 #define KMS_MDP5 5 #define KMS_DPU 3 @@ -495,6 +496,9 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) msm_gem_shrinker_init(ddev); switch (get_mdp_ver(pdev)) { + case KMS_HEADLESS: + priv->kms = kms = NULL; + break; case KMS_MDP4: kms = mdp4_kms_init(ddev); priv->kms = kms; @@ -512,12 +516,6 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) } if (IS_ERR(kms)) { - /* - * NOTE: once we have GPU support, having no kms should not - * be considered fatal.. ideally we would still support gpu - * and (for example) use dmabuf/prime to share buffers with - * imx drm driver on iMX5 - */ dev_err(dev, "failed to load kms\n"); ret = PTR_ERR(kms); goto err_msm_uninit; @@ -633,7 +631,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv) drm_mode_config_reset(ddev); #ifdef CONFIG_DRM_FBDEV_EMULATION - if (fbdev) + if (kms && fbdev) priv->fbdev = msm_fbdev_init(ddev); #endif @@ -1315,9 +1313,11 @@ static int msm_pdev_probe(struct platform_device *pdev) struct component_match *match = NULL; int ret; - ret = add_display_components(&pdev->dev, &match); - if (ret) - return ret; + if (get_mdp_ver(pdev) != KMS_HEADLESS) { + ret = add_display_components(&pdev->dev, &match); + if (ret) + return ret; + } ret = add_gpu_components(&pdev->dev, &match); if (ret) @@ -1342,6 +1342,7 @@ static int msm_pdev_remove(struct platform_device *pdev) } static const struct of_device_id dt_match[] = { + { .compatible = "qcom,adreno-headless", .data = (void *)KMS_HEADLESS }, { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 }, { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 }, { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },