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Message-Id: <20240608-adreno-v1-1-2e470480eee7@gmail.com>
Date: Sat, 08 Jun 2024 11:43:47 -0400
From: Kiarash Hajian <kiarash8112hajian@...il.com>
To: Rob Clark <robdclark@...il.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Kiarash Hajian <kiarash8112hajian@...il.com>
Subject: [PATCH] drm/msm/a6xx: request memory region
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@...il.com>
---
Changes in v6:
-Fix compile error
-Link to v5: https://lore.kernel.org/all/20240607-memory-v1-1-8664f52fc2a1@gmail.com
Changes in v5:
- Fix error hanlding problems.
- Link to v4: https://lore.kernel.org/r/20240512-msm-adreno-memory-region-v4-1-3881a64088e6@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-v3-0-0a728ad45010@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 | 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@...il.com>
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