From patchwork Tue Dec 18 06:02:43 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Gross X-Patchwork-Id: 1890191 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id 2165FDF23A for ; Tue, 18 Dec 2012 06:04:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DB20AE6211 for ; Mon, 17 Dec 2012 22:04:11 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by gabe.freedesktop.org (Postfix) with ESMTP id 72F6CE5C1F for ; Mon, 17 Dec 2012 22:03:59 -0800 (PST) Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id qBI63uBM000773; Tue, 18 Dec 2012 00:03:56 -0600 Received: from DLEE74.ent.ti.com (dlee74.ent.ti.com [157.170.170.8]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id qBI63t1l005171; Tue, 18 Dec 2012 00:03:56 -0600 Received: from dlelxv23.itg.ti.com (172.17.1.198) by DLEE74.ent.ti.com (157.170.170.8) with Microsoft SMTP Server id 14.1.323.3; Tue, 18 Dec 2012 00:03:18 -0600 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlelxv23.itg.ti.com (8.13.8/8.13.8) with ESMTP id qBI63IZm013026; Tue, 18 Dec 2012 00:03:18 -0600 Received: from localhost (h0-243.vpn.ti.com [172.24.0.243]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id qBI63Iw16174; Tue, 18 Dec 2012 00:03:18 -0600 (CST) From: Andy Gross To: Subject: [PATCH 1/2] drm/omap: Add PM capabilities Date: Tue, 18 Dec 2012 00:02:43 -0600 Message-ID: <1355810564-1684-2-git-send-email-andy.gross@ti.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1355810564-1684-1-git-send-email-andy.gross@ti.com> References: <1355810564-1684-1-git-send-email-andy.gross@ti.com> MIME-Version: 1.0 Cc: Greg Kroah-Hartman , Rob Clark X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Added resume hooks that will be called on resuming from DEVICE_OFF. The dmm portion of the patch reprograms the LUT to point to the dummy pages. The omapdrm portion of the patch repins the buffers into the DMM. Signed-off-by: Andy Gross Signed-off-by: Rob Clark --- drivers/staging/omapdrm/omap_dmm_tiler.c | 34 ++++++++++++++++++++++++++++++ drivers/staging/omapdrm/omap_drv.c | 14 ++++++++++++ drivers/staging/omapdrm/omap_drv.h | 4 +++ drivers/staging/omapdrm/omap_gem.c | 28 ++++++++++++++++++++++++ 4 files changed, 80 insertions(+), 0 deletions(-) diff --git a/drivers/staging/omapdrm/omap_dmm_tiler.c b/drivers/staging/omapdrm/omap_dmm_tiler.c index 59bf438..c42c5e5 100644 --- a/drivers/staging/omapdrm/omap_dmm_tiler.c +++ b/drivers/staging/omapdrm/omap_dmm_tiler.c @@ -903,12 +903,46 @@ error: } #endif +#ifdef CONFIG_PM +static int omap_dmm_resume(struct device *dev) +{ + struct tcm_area area; + int i; + + if (!omap_dmm) + return -ENODEV; + + area = (struct tcm_area) { + .is2d = true, + .tcm = NULL, + .p1.x = omap_dmm->container_width - 1, + .p1.y = omap_dmm->container_height - 1, + }; + + /* initialize all LUTs to dummy page entries */ + for (i = 0; i < omap_dmm->num_lut; i++) { + area.tcm = omap_dmm->tcm[i]; + if (fill(&area, NULL, 0, 0, true)) + dev_err(dev, "refill failed"); + } + + return 0; +} + +static const struct dev_pm_ops omap_dmm_pm_ops = { + .resume = omap_dmm_resume, +}; +#endif + struct platform_driver omap_dmm_driver = { .probe = omap_dmm_probe, .remove = omap_dmm_remove, .driver = { .owner = THIS_MODULE, .name = DMM_DRIVER_NAME, +#ifdef CONFIG_PM + .pm = &omap_dmm_pm_ops, +#endif }, }; diff --git a/drivers/staging/omapdrm/omap_drv.c b/drivers/staging/omapdrm/omap_drv.c index ae5ecc2..d246f85 100644 --- a/drivers/staging/omapdrm/omap_drv.c +++ b/drivers/staging/omapdrm/omap_drv.c @@ -368,6 +368,9 @@ static int dev_load(struct drm_device *dev, unsigned long flags) /* well, limp along without an fbdev.. maybe X11 will work? */ } + /* store off drm_device for use in pm ops */ + dev_set_drvdata(dev->dev, dev); + drm_kms_helper_poll_init(dev); return 0; @@ -393,6 +396,8 @@ static int dev_unload(struct drm_device *dev) kfree(dev->dev_private); dev->dev_private = NULL; + dev_set_drvdata(dev->dev, NULL); + return 0; } @@ -558,10 +563,19 @@ static int pdev_remove(struct platform_device *device) return 0; } +#ifdef CONFIG_PM +static const struct dev_pm_ops omapdrm_pm_ops = { + .resume = omap_gem_resume, +}; +#endif + struct platform_driver pdev = { .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, +#ifdef CONFIG_PM + .pm = &omapdrm_pm_ops, +#endif }, .probe = pdev_probe, .remove = pdev_remove, diff --git a/drivers/staging/omapdrm/omap_drv.h b/drivers/staging/omapdrm/omap_drv.h index cd1f22b..f921027 100644 --- a/drivers/staging/omapdrm/omap_drv.h +++ b/drivers/staging/omapdrm/omap_drv.h @@ -135,6 +135,10 @@ void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m); void omap_gem_describe_objects(struct list_head *list, struct seq_file *m); #endif +#ifdef CONFIG_PM +int omap_gem_resume(struct device *dev); +#endif + int omap_irq_enable_vblank(struct drm_device *dev, int crtc); void omap_irq_disable_vblank(struct drm_device *dev, int crtc); irqreturn_t omap_irq_handler(DRM_IRQ_ARGS); diff --git a/drivers/staging/omapdrm/omap_gem.c b/drivers/staging/omapdrm/omap_gem.c index c38992b..08f1e292 100644 --- a/drivers/staging/omapdrm/omap_gem.c +++ b/drivers/staging/omapdrm/omap_gem.c @@ -964,6 +964,34 @@ void *omap_gem_vaddr(struct drm_gem_object *obj) return omap_obj->vaddr; } +#ifdef CONFIG_PM +/* re-pin objects in DMM in resume path: */ +int omap_gem_resume(struct device *dev) +{ + struct drm_device *drm_dev = dev_get_drvdata(dev); + struct omap_drm_private *priv = drm_dev->dev_private; + struct omap_gem_object *omap_obj; + int ret = 0; + + list_for_each_entry(omap_obj, &priv->obj_list, mm_list) { + if (omap_obj->block) { + struct drm_gem_object *obj = &omap_obj->base; + uint32_t npages = obj->size >> PAGE_SHIFT; + WARN_ON(!omap_obj->pages); /* this can't happen */ + ret = tiler_pin(omap_obj->block, + omap_obj->pages, npages, + omap_obj->roll, true); + if (ret) { + dev_err(dev, "could not repin: %d\n", ret); + return ret; + } + } + } + + return 0; +} +#endif + #ifdef CONFIG_DEBUG_FS void omap_gem_describe(struct drm_gem_object *obj, struct seq_file *m) {