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 <kiarash8112haj...@gmail.com> --- Changes in v4: - Combine v3 commits into a singel commit - Link to v3: https://lore.kernel.org/r/20240512-msm-adreno-memory-region-v3-0-0a728ad45...@gmail.com 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 | 22 +--------------------- 1 file changed, 1 insertion(+), 21 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 8bea8ef26f77..cf0b3b3d8f34 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -524,9 +524,6 @@ static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu) uint32_t pdc_address_offset; bool pdc_in_aop = false; - if (IS_ERR(pdcptr)) - goto err; - if (adreno_is_a650(adreno_gpu) || adreno_is_a660_family(adreno_gpu) || adreno_is_a7xx(adreno_gpu)) @@ -540,8 +537,6 @@ 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; } /* Disable SDE clock gating */ @@ -633,12 +628,6 @@ 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 +1492,7 @@ 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 +1602,11 @@ 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; } gmu->cxpd = dev_pm_domain_attach_by_name(gmu->dev, "cx"); if (IS_ERR(gmu->cxpd)) { ret = PTR_ERR(gmu->cxpd); - goto err_mmio; } if (!device_link_add(gmu->dev, gmu->cxpd, DL_FLAG_PM_RUNTIME)) { @@ -1635,7 +1622,6 @@ 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; } gmu->initialized = true; @@ -1645,9 +1631,6 @@ 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); - /* Drop reference taken in of_find_device_by_node */ put_device(gmu->dev); @@ -1825,9 +1808,6 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) dev_pm_domain_detach(gmu->cxpd, false); err_mmio: - iounmap(gmu->mmio); - if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc")) - iounmap(gmu->rscc); free_irq(gmu->gmu_irq, gmu); free_irq(gmu->hfi_irq, gmu); --- base-commit: cf87f46fd34d6c19283d9625a7822f20d90b64a4 change-id: 20240511-msm-adreno-memory-region-2bcb1c958621 Best regards, -- Kiarash Hajian <kiarash8112haj...@gmail.com>
