From patchwork Mon Oct 24 15:34:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jyri Sarha X-Patchwork-Id: 9392365 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 844C36077A for ; Mon, 24 Oct 2016 15:35:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 76D8D2909C for ; Mon, 24 Oct 2016 15:35:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 68F5D29177; Mon, 24 Oct 2016 15:35:21 +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=-4.2 required=2.0 tests=BAYES_00, 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 DB2502909C for ; Mon, 24 Oct 2016 15:35:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8FF636E527; Mon, 24 Oct 2016 15:35:19 +0000 (UTC) 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 ESMTPS id 897FE6E40C for ; Mon, 24 Oct 2016 15:35:16 +0000 (UTC) Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id u9OFZ0Ow006248; Mon, 24 Oct 2016 10:35:00 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id u9OFZ0J0014917; Mon, 24 Oct 2016 10:35:00 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.294.0; Mon, 24 Oct 2016 10:35:00 -0500 Received: from jadmar.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id u9OFYnhI018426; Mon, 24 Oct 2016 10:34:57 -0500 From: Jyri Sarha To: Subject: [PATCH v2 3/3] drm/tilcdc: Use unload to handle initialization failures Date: Mon, 24 Oct 2016 18:34:45 +0300 Message-ID: <547369c261d8cd744d3e7a819478a06f2ae4d499.1477322876.git.jsarha@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: MIME-Version: 1.0 Cc: khilman@baylibre.com, Jyri Sarha , bgolaszewski@baylibre.com, tomi.valkeinen@ti.com, laurent.pinchart@ideasonboard.com, rmk+kernel@arm.linux.org.uk X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 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" X-Virus-Scanned: ClamAV using ClamSMTP Use unload to handle initialization failures instead of complex goto label mess. To do this the initialization sequence needed slight reordering and some unload functions needed to become conditional. Signed-off-by: Jyri Sarha --- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 10 ++-- drivers/gpu/drm/tilcdc/tilcdc_drv.c | 101 ++++++++++++----------------------- drivers/gpu/drm/tilcdc/tilcdc_drv.h | 3 +- 3 files changed, 43 insertions(+), 71 deletions(-) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index 606ae7d..6221150 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -176,14 +176,12 @@ static void tilcdc_crtc_enable(struct drm_crtc *crtc) tilcdc_crtc->enabled = true; } -void tilcdc_crtc_disable(struct drm_crtc *crtc) +void tilcdc_crtc_off(struct drm_crtc *crtc) { struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; struct tilcdc_drm_private *priv = dev->dev_private; - WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); - if (!tilcdc_crtc->enabled) return; @@ -227,6 +225,12 @@ void tilcdc_crtc_disable(struct drm_crtc *crtc) tilcdc_crtc->enabled = false; } +static void tilcdc_crtc_disable(struct drm_crtc *crtc) +{ + WARN_ON(!drm_modeset_is_locked(&crtc->mutex)); + tilcdc_crtc_off(crtc); +} + static bool tilcdc_crtc_is_on(struct drm_crtc *crtc) { return crtc->state && crtc->state->enable && crtc->state->active; diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index 1967ceb..71f4b12 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -160,8 +160,6 @@ static int modeset_init(struct drm_device *dev) struct tilcdc_drm_private *priv = dev->dev_private; struct tilcdc_module *mod; - drm_mode_config_init(dev); - priv->crtc = tilcdc_crtc_create(dev); list_for_each_entry(mod, &module_list, list) { @@ -200,22 +198,25 @@ static void tilcdc_fini(struct drm_device *dev) { struct tilcdc_drm_private *priv = dev->dev_private; - drm_modeset_lock_crtc(priv->crtc, NULL); - tilcdc_crtc_disable(priv->crtc); - drm_modeset_unlock_crtc(priv->crtc); + if (priv->crtc) + tilcdc_crtc_off(priv->crtc); - drm_dev_unregister(dev); + if (priv->is_registered) + drm_dev_unregister(dev); drm_kms_helper_poll_fini(dev); - drm_fbdev_cma_fini(priv->fbdev); + + if (priv->fbdev) + drm_fbdev_cma_fini(priv->fbdev); + drm_irq_uninstall(dev); drm_mode_config_cleanup(dev); - tilcdc_remove_external_encoders(dev); #ifdef CONFIG_CPU_FREQ - cpufreq_unregister_notifier(&priv->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); + if (priv->freq_transition.notifier_call) + cpufreq_unregister_notifier(&priv->freq_transition, + CPUFREQ_TRANSITION_NOTIFIER); #endif if (priv->clk) @@ -224,8 +225,10 @@ static void tilcdc_fini(struct drm_device *dev) if (priv->mmio) iounmap(priv->mmio); - flush_workqueue(priv->wq); - destroy_workqueue(priv->wq); + if (priv->wq) { + flush_workqueue(priv->wq); + destroy_workqueue(priv->wq); + } dev->dev_private = NULL; @@ -256,6 +259,8 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) ddev->platformdev = pdev; ddev->dev_private = priv; + platform_set_drvdata(pdev, ddev); + drm_mode_config_init(ddev); priv->is_componentized = tilcdc_get_external_components(dev, NULL) > 0; @@ -263,28 +268,28 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) priv->wq = alloc_ordered_workqueue("tilcdc", 0); if (!priv->wq) { ret = -ENOMEM; - goto fail_unset_priv; + goto init_failed; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(dev, "failed to get memory resource\n"); ret = -EINVAL; - goto fail_free_wq; + goto init_failed; } priv->mmio = ioremap_nocache(res->start, resource_size(res)); if (!priv->mmio) { dev_err(dev, "failed to ioremap\n"); ret = -ENOMEM; - goto fail_free_wq; + goto init_failed; } priv->clk = clk_get(dev, "fck"); if (IS_ERR(priv->clk)) { dev_err(dev, "failed to get functional clock\n"); ret = -ENODEV; - goto fail_iounmap; + goto init_failed; } #ifdef CONFIG_CPU_FREQ @@ -293,7 +298,8 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) CPUFREQ_TRANSITION_NOTIFIER); if (ret) { dev_err(dev, "failed to register cpufreq notifier\n"); - goto fail_put_clk; + priv->freq_transition.notifier_call = NULL; + goto init_failed; } #endif @@ -369,37 +375,35 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) ret = modeset_init(ddev); if (ret < 0) { dev_err(dev, "failed to initialize mode setting\n"); - goto fail_cpufreq_unregister; + goto init_failed; } - platform_set_drvdata(pdev, ddev); - if (priv->is_componentized) { ret = component_bind_all(dev, ddev); if (ret < 0) - goto fail_mode_config_cleanup; + goto init_failed; ret = tilcdc_add_external_encoders(ddev); if (ret < 0) - goto fail_component_cleanup; + goto init_failed; } if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) { dev_err(dev, "no encoders/connectors found\n"); ret = -ENXIO; - goto fail_external_cleanup; + goto init_failed; } ret = drm_vblank_init(ddev, 1); if (ret < 0) { dev_err(dev, "failed to initialize vblank\n"); - goto fail_external_cleanup; + goto init_failed; } ret = drm_irq_install(ddev, platform_get_irq(pdev, 0)); if (ret < 0) { dev_err(dev, "failed to install IRQ handler\n"); - goto fail_vblank_cleanup; + goto init_failed; } drm_mode_config_reset(ddev); @@ -409,57 +413,20 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev) ddev->mode_config.num_connector); if (IS_ERR(priv->fbdev)) { ret = PTR_ERR(priv->fbdev); - goto fail_irq_uninstall; + goto init_failed; } drm_kms_helper_poll_init(ddev); ret = drm_dev_register(ddev, 0); if (ret) - goto fail_platform_init; + goto init_failed; + priv->is_registered = true; return 0; -fail_platform_init: - drm_kms_helper_poll_fini(ddev); - drm_fbdev_cma_fini(priv->fbdev); - -fail_irq_uninstall: - drm_irq_uninstall(ddev); - -fail_vblank_cleanup: - drm_vblank_cleanup(ddev); - -fail_component_cleanup: - if (priv->is_componentized) - component_unbind_all(dev, dev); - -fail_mode_config_cleanup: - drm_mode_config_cleanup(ddev); - -fail_external_cleanup: - tilcdc_remove_external_encoders(ddev); - -fail_cpufreq_unregister: - pm_runtime_disable(dev); -#ifdef CONFIG_CPU_FREQ - cpufreq_unregister_notifier(&priv->freq_transition, - CPUFREQ_TRANSITION_NOTIFIER); - -fail_put_clk: -#endif - clk_put(priv->clk); - -fail_iounmap: - iounmap(priv->mmio); - -fail_free_wq: - flush_workqueue(priv->wq); - destroy_workqueue(priv->wq); - -fail_unset_priv: - ddev->dev_private = NULL; - drm_dev_unref(ddev); +init_failed: + tilcdc_fini(ddev); return ret; } diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h index 9780c37..7db23f2 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h @@ -89,6 +89,7 @@ struct tilcdc_drm_private { struct drm_connector *connectors[8]; const struct drm_connector_helper_funcs *connector_funcs[8]; + bool is_registered; bool is_componentized; }; @@ -172,7 +173,7 @@ void tilcdc_crtc_set_simulate_vesa_sync(struct drm_crtc *crtc, bool simulate_vesa_sync); int tilcdc_crtc_mode_valid(struct drm_crtc *crtc, struct drm_display_mode *mode); int tilcdc_crtc_max_width(struct drm_crtc *crtc); -void tilcdc_crtc_disable(struct drm_crtc *crtc); +void tilcdc_crtc_off(struct drm_crtc *crtc); int tilcdc_crtc_update_fb(struct drm_crtc *crtc, struct drm_framebuffer *fb, struct drm_pending_vblank_event *event);