The driver's memory regions are currently just ioremap()ed, but not reserved through a request. That's not a bug, but having the request is a little more robust. Implement the region-request through the corresponding managed devres-function. Signed-off-by: Kiarash Hajian <kiarash8112hajian@xxxxxxxxx> --- Changes in v6: -Fix compile error -Link to v5: https://lore.kernel.org/all/20240607-memory-v1-1-8664f52fc2a1@xxxxxxxxx Changes in v5: - Fix error hanlding problems. - Link to v4: https://lore.kernel.org/r/20240512-msm-adreno-memory-region-v4-1-3881a64088e6@xxxxxxxxx Changes in v4: - Combine v3 commits into a singel commit - Link to v3: https://lore.kernel.org/r/20240512-msm-adreno-memory-region-v3-0-0a728ad45010@xxxxxxxxx Changes in v3: - Remove redundant devm_iounmap calls, relying on devres for automatic resource cleanup. Changes in v2: - update the subject prefix to "drm/msm/a6xx:", to match the majority of other changes to this file. --- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 33 +++++++++++---------------------- 1 file changed, 11 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 8bea8ef26f77..d26cc6254ef9 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -525,7 +525,7 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu) bool pdc_in_aop = false; if (IS_ERR(pdcptr)) - goto err; + return; if (adreno_is_a650(adreno_gpu) || adreno_is_a660_family(adreno_gpu) || @@ -541,7 +541,7 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu) if (!pdc_in_aop) { seqptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc_seq"); if (IS_ERR(seqptr)) - goto err; + return; } /* Disable SDE clock gating */ @@ -633,12 +633,6 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu) wmb(); a6xx_rpmh_stop(gmu); - -err: - if (!IS_ERR_OR_NULL(pdcptr)) - iounmap(pdcptr); - if (!IS_ERR_OR_NULL(seqptr)) - iounmap(seqptr); } /* @@ -1503,7 +1497,7 @@ static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev, return ERR_PTR(-EINVAL); } - ret = ioremap(res->start, resource_size(res)); + ret = devm_ioremap_resource(&pdev->dev, res); if (!ret) { DRM_DEV_ERROR(&pdev->dev, "Unable to map the %s registers\n", name); return ERR_PTR(-EINVAL); @@ -1613,13 +1607,13 @@ int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu"); if (IS_ERR(gmu->mmio)) { ret = PTR_ERR(gmu->mmio); - goto err_mmio; + goto err_cleanup; } gmu->cxpd = dev_pm_domain_attach_by_name(gmu->dev, "cx"); if (IS_ERR(gmu->cxpd)) { ret = PTR_ERR(gmu->cxpd); - goto err_mmio; + goto err_cleanup; } if (!device_link_add(gmu->dev, gmu->cxpd, DL_FLAG_PM_RUNTIME)) { @@ -1635,7 +1629,7 @@ int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx"); if (IS_ERR(gmu->gxpd)) { ret = PTR_ERR(gmu->gxpd); - goto err_mmio; + goto err_cleanup; } gmu->initialized = true; @@ -1645,9 +1639,7 @@ int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) detach_cxpd: dev_pm_domain_detach(gmu->cxpd, false); -err_mmio: - iounmap(gmu->mmio); - +err_cleanup: /* Drop reference taken in of_find_device_by_node */ put_device(gmu->dev); @@ -1762,7 +1754,7 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) gmu->rscc = a6xx_gmu_get_mmio(pdev, "rscc"); if (IS_ERR(gmu->rscc)) { ret = -ENODEV; - goto err_mmio; + goto err_cleanup; } } else { gmu->rscc = gmu->mmio + 0x23000; @@ -1774,13 +1766,13 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) if (gmu->hfi_irq < 0 || gmu->gmu_irq < 0) { ret = -ENODEV; - goto err_mmio; + goto err_cleanup; } gmu->cxpd = dev_pm_domain_attach_by_name(gmu->dev, "cx"); if (IS_ERR(gmu->cxpd)) { ret = PTR_ERR(gmu->cxpd); - goto err_mmio; + goto err_cleanup; } link = device_link_add(gmu->dev, gmu->cxpd, DL_FLAG_PM_RUNTIME); @@ -1824,10 +1816,7 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) detach_cxpd: dev_pm_domain_detach(gmu->cxpd, false); -err_mmio: - iounmap(gmu->mmio); - if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc")) - iounmap(gmu->rscc); +err_cleanup: free_irq(gmu->gmu_irq, gmu); free_irq(gmu->hfi_irq, gmu); --- base-commit: 1b294a1f35616977caddaddf3e9d28e576a1adbc change-id: 20240608-adreno-98c412bfdc03 Best regards, -- Kiarash Hajian <kiarash8112hajian@xxxxxxxxx>