From c53a1aeee40564ccfe11b662390367a0d86a2354 Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Mon, 9 Oct 2023 20:48:38 +0300 Subject: drm/msm/dpu: move resource allocation to the _probe function To let the probe function bail early if any of the resources is unavailable, move resource allocattion from kms_init directly to the probe callback. While we are at it, replace irq_of_parse_and_map() with platform_get_irq(). This also drops devm_iounmap() calls. It is too early to have them _dpu_kms_hw_destroy() (or it will break if for some reason DPU device is rebound into the composite device) and it doesn't make sense to have them in dpu_dev_remove (as everything will be torn down by the devres anyway after the device is unbound from the driver). Reviewed-by: Rob Clark Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/561629/ Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 133 +++++++++++++++----------------- 1 file changed, 61 insertions(+), 72 deletions(-) (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c') diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index b64b1bd0686b..8e7a1ec29951 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -389,8 +389,7 @@ static int dpu_kms_parse_data_bus_icc_path(struct dpu_kms *dpu_kms) { struct icc_path *path0; struct icc_path *path1; - struct drm_device *dev = dpu_kms->dev; - struct device *dpu_dev = dev->dev; + struct device *dpu_dev = &dpu_kms->pdev->dev; path0 = msm_icc_get(dpu_dev, "mdp0-mem"); path1 = msm_icc_get(dpu_dev, "mdp1-mem"); @@ -829,21 +828,9 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms) dpu_kms->catalog = NULL; - if (dpu_kms->vbif[VBIF_NRT]) - devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_NRT]); - dpu_kms->vbif[VBIF_NRT] = NULL; - - if (dpu_kms->vbif[VBIF_RT]) - devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_RT]); - dpu_kms->vbif[VBIF_RT] = NULL; - if (dpu_kms->hw_mdp) dpu_hw_mdp_destroy(dpu_kms->hw_mdp); dpu_kms->hw_mdp = NULL; - - if (dpu_kms->mmio) - devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->mmio); - dpu_kms->mmio = NULL; } static void dpu_kms_destroy(struct msm_kms *kms) @@ -1079,30 +1066,6 @@ static int dpu_kms_hw_init(struct msm_kms *kms) atomic_set(&dpu_kms->bandwidth_ref, 0); - dpu_kms->mmio = msm_ioremap(dpu_kms->pdev, "mdp"); - if (IS_ERR(dpu_kms->mmio)) { - rc = PTR_ERR(dpu_kms->mmio); - DPU_ERROR("mdp register memory map failed: %d\n", rc); - dpu_kms->mmio = NULL; - goto error; - } - DRM_DEBUG("mapped dpu address space @%pK\n", dpu_kms->mmio); - - dpu_kms->vbif[VBIF_RT] = msm_ioremap(dpu_kms->pdev, "vbif"); - if (IS_ERR(dpu_kms->vbif[VBIF_RT])) { - rc = PTR_ERR(dpu_kms->vbif[VBIF_RT]); - DPU_ERROR("vbif register memory map failed: %d\n", rc); - dpu_kms->vbif[VBIF_RT] = NULL; - goto error; - } - dpu_kms->vbif[VBIF_NRT] = msm_ioremap_quiet(dpu_kms->pdev, "vbif_nrt"); - if (IS_ERR(dpu_kms->vbif[VBIF_NRT])) { - dpu_kms->vbif[VBIF_NRT] = NULL; - DPU_DEBUG("VBIF NRT is not defined"); - } - - dpu_kms_parse_data_bus_icc_path(dpu_kms); - rc = pm_runtime_resume_and_get(&dpu_kms->pdev->dev); if (rc < 0) goto error; @@ -1241,33 +1204,11 @@ static int dpu_kms_init(struct drm_device *ddev) struct msm_drm_private *priv = ddev->dev_private; struct device *dev = ddev->dev; struct platform_device *pdev = to_platform_device(dev); - struct dpu_kms *dpu_kms; - int irq; + struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms); struct dev_pm_opp *opp; int ret = 0; unsigned long max_freq = ULONG_MAX; - dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL); - if (!dpu_kms) - return -ENOMEM; - - ret = devm_pm_opp_set_clkname(dev, "core"); - if (ret) - return ret; - /* OPP table is optional */ - ret = devm_pm_opp_of_add_table(dev); - if (ret && ret != -ENODEV) { - dev_err(dev, "invalid OPP table in device tree\n"); - return ret; - } - - ret = devm_clk_bulk_get_all(&pdev->dev, &dpu_kms->clocks); - if (ret < 0) { - DPU_ERROR("failed to parse clocks, ret=%d\n", ret); - return ret; - } - dpu_kms->num_clocks = ret; - opp = dev_pm_opp_find_freq_floor(dev, &max_freq); if (!IS_ERR(opp)) dev_pm_opp_put(opp); @@ -1280,26 +1221,74 @@ static int dpu_kms_init(struct drm_device *ddev) return ret; } dpu_kms->dev = ddev; - dpu_kms->pdev = pdev; pm_runtime_enable(&pdev->dev); dpu_kms->rpm_enabled = true; - priv->kms = &dpu_kms->base; - - irq = irq_of_parse_and_map(dpu_kms->pdev->dev.of_node, 0); - if (!irq) { - DPU_ERROR("failed to get irq\n"); - return -EINVAL; - } - dpu_kms->base.irq = irq; - return 0; } static int dpu_dev_probe(struct platform_device *pdev) { - return msm_drv_probe(&pdev->dev, dpu_kms_init, NULL); + struct device *dev = &pdev->dev; + struct dpu_kms *dpu_kms; + int irq; + int ret = 0; + + dpu_kms = devm_kzalloc(dev, sizeof(*dpu_kms), GFP_KERNEL); + if (!dpu_kms) + return -ENOMEM; + + dpu_kms->pdev = pdev; + + ret = devm_pm_opp_set_clkname(dev, "core"); + if (ret) + return ret; + /* OPP table is optional */ + ret = devm_pm_opp_of_add_table(dev); + if (ret && ret != -ENODEV) + return dev_err_probe(dev, ret, "invalid OPP table in device tree\n"); + + ret = devm_clk_bulk_get_all(&pdev->dev, &dpu_kms->clocks); + if (ret < 0) + return dev_err_probe(dev, ret, "failed to parse clocks\n"); + + dpu_kms->num_clocks = ret; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return dev_err_probe(dev, irq, "failed to get irq\n"); + + dpu_kms->base.irq = irq; + + dpu_kms->mmio = msm_ioremap(pdev, "mdp"); + if (IS_ERR(dpu_kms->mmio)) { + ret = PTR_ERR(dpu_kms->mmio); + DPU_ERROR("mdp register memory map failed: %d\n", ret); + dpu_kms->mmio = NULL; + return ret; + } + DRM_DEBUG("mapped dpu address space @%pK\n", dpu_kms->mmio); + + dpu_kms->vbif[VBIF_RT] = msm_ioremap(pdev, "vbif"); + if (IS_ERR(dpu_kms->vbif[VBIF_RT])) { + ret = PTR_ERR(dpu_kms->vbif[VBIF_RT]); + DPU_ERROR("vbif register memory map failed: %d\n", ret); + dpu_kms->vbif[VBIF_RT] = NULL; + return ret; + } + + dpu_kms->vbif[VBIF_NRT] = msm_ioremap_quiet(pdev, "vbif_nrt"); + if (IS_ERR(dpu_kms->vbif[VBIF_NRT])) { + dpu_kms->vbif[VBIF_NRT] = NULL; + DPU_DEBUG("VBIF NRT is not defined"); + } + + ret = dpu_kms_parse_data_bus_icc_path(dpu_kms); + if (ret) + return ret; + + return msm_drv_probe(&pdev->dev, dpu_kms_init, &dpu_kms->base); } static int dpu_dev_remove(struct platform_device *pdev) -- cgit v1.2.3