From 2027e5b3413d73533c6853154d31bf70c8eea7e1 Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Wed, 1 Dec 2021 23:20:23 +0300 Subject: drm/msm: Initialize MDSS irq domain at probe time Since commit 8f59ee9a570c ("drm/msm/dsi: Adjust probe order"), the DSI host gets initialized earlier, but this caused unability to probe the entire stack of components because they all depend on interrupts coming from the main `mdss` node (mdp5, or dpu1). To fix this issue, move mdss device initialization (which include irq domain setup) to msm_mdev_probe() time, as to make sure that the interrupt controller is available before dsi and/or other components try to initialize, finally satisfying the dependency. Fixes: 8f59ee9a570c ("drm/msm/dsi: Adjust probe order") Co-Developed-By: AngeloGioacchino Del Regno Signed-off-by: Dmitry Baryshkov Tested-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20211201202023.2313971-1-dmitry.baryshkov@linaro.org Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 25 ++++++-------- drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c | 32 +++++++++--------- drivers/gpu/drm/msm/msm_drv.c | 56 ++++++++++++++++--------------- drivers/gpu/drm/msm/msm_kms.h | 8 ++--- 4 files changed, 59 insertions(+), 62 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c index b466784d9822..131c1f1a869c 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c @@ -111,7 +111,7 @@ static int _dpu_mdss_irq_domain_add(struct dpu_mdss *dpu_mdss) struct device *dev; struct irq_domain *domain; - dev = dpu_mdss->base.dev->dev; + dev = dpu_mdss->base.dev; domain = irq_domain_add_linear(dev->of_node, 32, &dpu_mdss_irqdomain_ops, dpu_mdss); @@ -184,16 +184,15 @@ static int dpu_mdss_disable(struct msm_mdss *mdss) return ret; } -static void dpu_mdss_destroy(struct drm_device *dev) +static void dpu_mdss_destroy(struct msm_mdss *mdss) { - struct platform_device *pdev = to_platform_device(dev->dev); - struct msm_drm_private *priv = dev->dev_private; - struct dpu_mdss *dpu_mdss = to_dpu_mdss(priv->mdss); + struct platform_device *pdev = to_platform_device(mdss->dev); + struct dpu_mdss *dpu_mdss = to_dpu_mdss(mdss); struct dss_module_power *mp = &dpu_mdss->mp; int irq; - pm_runtime_suspend(dev->dev); - pm_runtime_disable(dev->dev); + pm_runtime_suspend(mdss->dev); + pm_runtime_disable(mdss->dev); _dpu_mdss_irq_domain_fini(dpu_mdss); irq = platform_get_irq(pdev, 0); irq_set_chained_handler_and_data(irq, NULL, NULL); @@ -203,7 +202,6 @@ static void dpu_mdss_destroy(struct drm_device *dev) if (dpu_mdss->mmio) devm_iounmap(&pdev->dev, dpu_mdss->mmio); dpu_mdss->mmio = NULL; - priv->mdss = NULL; } static const struct msm_mdss_funcs mdss_funcs = { @@ -212,16 +210,15 @@ static const struct msm_mdss_funcs mdss_funcs = { .destroy = dpu_mdss_destroy, }; -int dpu_mdss_init(struct drm_device *dev) +int dpu_mdss_init(struct platform_device *pdev) { - struct platform_device *pdev = to_platform_device(dev->dev); - struct msm_drm_private *priv = dev->dev_private; + struct msm_drm_private *priv = platform_get_drvdata(pdev); struct dpu_mdss *dpu_mdss; struct dss_module_power *mp; int ret; int irq; - dpu_mdss = devm_kzalloc(dev->dev, sizeof(*dpu_mdss), GFP_KERNEL); + dpu_mdss = devm_kzalloc(&pdev->dev, sizeof(*dpu_mdss), GFP_KERNEL); if (!dpu_mdss) return -ENOMEM; @@ -238,7 +235,7 @@ int dpu_mdss_init(struct drm_device *dev) goto clk_parse_err; } - dpu_mdss->base.dev = dev; + dpu_mdss->base.dev = &pdev->dev; dpu_mdss->base.funcs = &mdss_funcs; ret = _dpu_mdss_irq_domain_add(dpu_mdss); @@ -256,7 +253,7 @@ int dpu_mdss_init(struct drm_device *dev) priv->mdss = &dpu_mdss->base; - pm_runtime_enable(dev->dev); + pm_runtime_enable(&pdev->dev); return 0; diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c index c34760d981b8..b3f79c2277e9 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_mdss.c @@ -112,7 +112,7 @@ static const struct irq_domain_ops mdss_hw_irqdomain_ops = { static int mdss_irq_domain_init(struct mdp5_mdss *mdp5_mdss) { - struct device *dev = mdp5_mdss->base.dev->dev; + struct device *dev = mdp5_mdss->base.dev; struct irq_domain *d; d = irq_domain_add_linear(dev->of_node, 32, &mdss_hw_irqdomain_ops, @@ -155,7 +155,7 @@ static int mdp5_mdss_disable(struct msm_mdss *mdss) static int msm_mdss_get_clocks(struct mdp5_mdss *mdp5_mdss) { struct platform_device *pdev = - to_platform_device(mdp5_mdss->base.dev->dev); + to_platform_device(mdp5_mdss->base.dev); mdp5_mdss->ahb_clk = msm_clk_get(pdev, "iface"); if (IS_ERR(mdp5_mdss->ahb_clk)) @@ -172,10 +172,9 @@ static int msm_mdss_get_clocks(struct mdp5_mdss *mdp5_mdss) return 0; } -static void mdp5_mdss_destroy(struct drm_device *dev) +static void mdp5_mdss_destroy(struct msm_mdss *mdss) { - struct msm_drm_private *priv = dev->dev_private; - struct mdp5_mdss *mdp5_mdss = to_mdp5_mdss(priv->mdss); + struct mdp5_mdss *mdp5_mdss = to_mdp5_mdss(mdss); if (!mdp5_mdss) return; @@ -183,7 +182,7 @@ static void mdp5_mdss_destroy(struct drm_device *dev) irq_domain_remove(mdp5_mdss->irqcontroller.domain); mdp5_mdss->irqcontroller.domain = NULL; - pm_runtime_disable(dev->dev); + pm_runtime_disable(mdss->dev); } static const struct msm_mdss_funcs mdss_funcs = { @@ -192,25 +191,24 @@ static const struct msm_mdss_funcs mdss_funcs = { .destroy = mdp5_mdss_destroy, }; -int mdp5_mdss_init(struct drm_device *dev) +int mdp5_mdss_init(struct platform_device *pdev) { - struct platform_device *pdev = to_platform_device(dev->dev); - struct msm_drm_private *priv = dev->dev_private; + struct msm_drm_private *priv = platform_get_drvdata(pdev); struct mdp5_mdss *mdp5_mdss; int ret; DBG(""); - if (!of_device_is_compatible(dev->dev->of_node, "qcom,mdss")) + if (!of_device_is_compatible(pdev->dev.of_node, "qcom,mdss")) return 0; - mdp5_mdss = devm_kzalloc(dev->dev, sizeof(*mdp5_mdss), GFP_KERNEL); + mdp5_mdss = devm_kzalloc(&pdev->dev, sizeof(*mdp5_mdss), GFP_KERNEL); if (!mdp5_mdss) { ret = -ENOMEM; goto fail; } - mdp5_mdss->base.dev = dev; + mdp5_mdss->base.dev = &pdev->dev; mdp5_mdss->mmio = msm_ioremap(pdev, "mdss_phys", "MDSS"); if (IS_ERR(mdp5_mdss->mmio)) { @@ -226,27 +224,27 @@ int mdp5_mdss_init(struct drm_device *dev) ret = msm_mdss_get_clocks(mdp5_mdss); if (ret) { - DRM_DEV_ERROR(dev->dev, "failed to get clocks: %d\n", ret); + DRM_DEV_ERROR(&pdev->dev, "failed to get clocks: %d\n", ret); goto fail; } - ret = devm_request_irq(dev->dev, platform_get_irq(pdev, 0), + ret = devm_request_irq(&pdev->dev, platform_get_irq(pdev, 0), mdss_irq, 0, "mdss_isr", mdp5_mdss); if (ret) { - DRM_DEV_ERROR(dev->dev, "failed to init irq: %d\n", ret); + DRM_DEV_ERROR(&pdev->dev, "failed to init irq: %d\n", ret); goto fail; } ret = mdss_irq_domain_init(mdp5_mdss); if (ret) { - DRM_DEV_ERROR(dev->dev, "failed to init sub-block irqs: %d\n", ret); + DRM_DEV_ERROR(&pdev->dev, "failed to init sub-block irqs: %d\n", ret); goto fail; } mdp5_mdss->base.funcs = &mdss_funcs; priv->mdss = &mdp5_mdss->base; - pm_runtime_enable(dev->dev); + pm_runtime_enable(&pdev->dev); return 0; fail: diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index f5596efd3819..ad35a5d94053 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -342,7 +342,6 @@ static int msm_drm_uninit(struct device *dev) struct msm_drm_private *priv = platform_get_drvdata(pdev); struct drm_device *ddev = priv->dev; struct msm_kms *kms = priv->kms; - struct msm_mdss *mdss = priv->mdss; int i; /* @@ -402,9 +401,6 @@ static int msm_drm_uninit(struct device *dev) component_unbind_all(dev, ddev); - if (mdss && mdss->funcs) - mdss->funcs->destroy(ddev); - ddev->dev_private = NULL; drm_dev_put(ddev); @@ -525,20 +521,6 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) ddev->dev_private = priv; priv->dev = ddev; - switch (get_mdp_ver(pdev)) { - case KMS_MDP5: - ret = mdp5_mdss_init(ddev); - break; - case KMS_DPU: - ret = dpu_mdss_init(ddev); - break; - default: - ret = 0; - break; - } - if (ret) - goto err_put_drm_dev; - mdss = priv->mdss; priv->wq = alloc_ordered_workqueue("msm", 0); @@ -561,12 +543,12 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) ret = msm_init_vram(ddev); if (ret) - goto err_destroy_mdss; + return ret; /* Bind all our sub-components: */ ret = component_bind_all(dev, ddev); if (ret) - goto err_destroy_mdss; + return ret; dma_set_max_seg_size(dev, UINT_MAX); @@ -672,12 +654,6 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) err_msm_uninit: msm_drm_uninit(dev); return ret; -err_destroy_mdss: - if (mdss && mdss->funcs) - mdss->funcs->destroy(ddev); -err_put_drm_dev: - drm_dev_put(ddev); - return ret; } /* @@ -1386,10 +1362,26 @@ static int msm_pdev_probe(struct platform_device *pdev) platform_set_drvdata(pdev, priv); + switch (get_mdp_ver(pdev)) { + case KMS_MDP5: + ret = mdp5_mdss_init(pdev); + break; + case KMS_DPU: + ret = dpu_mdss_init(pdev); + break; + default: + ret = 0; + break; + } + if (ret) { + platform_set_drvdata(pdev, NULL); + return ret; + } + if (get_mdp_ver(pdev)) { ret = add_display_components(pdev, &match); if (ret) - return ret; + goto fail; } ret = add_gpu_components(&pdev->dev, &match); @@ -1411,14 +1403,24 @@ static int msm_pdev_probe(struct platform_device *pdev) fail: of_platform_depopulate(&pdev->dev); + + if (priv->mdss && priv->mdss->funcs) + priv->mdss->funcs->destroy(priv->mdss); + return ret; } static int msm_pdev_remove(struct platform_device *pdev) { + struct msm_drm_private *priv = platform_get_drvdata(pdev); + struct msm_mdss *mdss = priv->mdss; + component_master_del(&pdev->dev, &msm_drm_ops); of_platform_depopulate(&pdev->dev); + if (mdss && mdss->funcs) + mdss->funcs->destroy(mdss); + return 0; } diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 8b132c8b1513..2a4f0526cb98 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -204,16 +204,16 @@ extern const struct of_device_id mdp5_dt_match[]; struct msm_mdss_funcs { int (*enable)(struct msm_mdss *mdss); int (*disable)(struct msm_mdss *mdss); - void (*destroy)(struct drm_device *dev); + void (*destroy)(struct msm_mdss *mdss); }; struct msm_mdss { - struct drm_device *dev; + struct device *dev; const struct msm_mdss_funcs *funcs; }; -int mdp5_mdss_init(struct drm_device *dev); -int dpu_mdss_init(struct drm_device *dev); +int mdp5_mdss_init(struct platform_device *dev); +int dpu_mdss_init(struct platform_device *dev); #define for_each_crtc_mask(dev, crtc, crtc_mask) \ drm_for_each_crtc(crtc, dev) \ -- cgit v1.2.3