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path: root/drivers/gpu/drm/exynos/exynos_drm_g2d.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_g2d.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_g2d.c87
1 files changed, 53 insertions, 34 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index af75434ee4d..80015871447 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -8,7 +8,6 @@
*/
#include <linux/kernel.h>
-#include <linux/module.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/interrupt.h>
@@ -24,6 +23,7 @@
#include <drm/drmP.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
+#include "exynos_drm_g2d.h"
#include "exynos_drm_gem.h"
#include "exynos_drm_iommu.h"
@@ -383,17 +383,16 @@ out:
g2d_userptr->npages,
g2d_userptr->vma);
+ exynos_gem_put_vma(g2d_userptr->vma);
+
if (!g2d_userptr->out_of_list)
list_del_init(&g2d_userptr->list);
sg_free_table(g2d_userptr->sgt);
kfree(g2d_userptr->sgt);
- g2d_userptr->sgt = NULL;
- kfree(g2d_userptr->pages);
- g2d_userptr->pages = NULL;
+ drm_free_large(g2d_userptr->pages);
kfree(g2d_userptr);
- g2d_userptr = NULL;
}
static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
@@ -450,10 +449,8 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
}
g2d_userptr = kzalloc(sizeof(*g2d_userptr), GFP_KERNEL);
- if (!g2d_userptr) {
- DRM_ERROR("failed to allocate g2d_userptr.\n");
+ if (!g2d_userptr)
return ERR_PTR(-ENOMEM);
- }
atomic_set(&g2d_userptr->refcount, 1);
@@ -463,21 +460,24 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
npages = (end - start) >> PAGE_SHIFT;
g2d_userptr->npages = npages;
- pages = kzalloc(npages * sizeof(struct page *), GFP_KERNEL);
+ pages = drm_calloc_large(npages, sizeof(struct page *));
if (!pages) {
DRM_ERROR("failed to allocate pages.\n");
- kfree(g2d_userptr);
- return ERR_PTR(-ENOMEM);
+ ret = -ENOMEM;
+ goto err_free;
}
+ down_read(&current->mm->mmap_sem);
vma = find_vma(current->mm, userptr);
if (!vma) {
+ up_read(&current->mm->mmap_sem);
DRM_ERROR("failed to get vm region.\n");
ret = -EFAULT;
goto err_free_pages;
}
if (vma->vm_end < userptr + size) {
+ up_read(&current->mm->mmap_sem);
DRM_ERROR("vma is too small.\n");
ret = -EFAULT;
goto err_free_pages;
@@ -485,6 +485,7 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
g2d_userptr->vma = exynos_gem_get_vma(vma);
if (!g2d_userptr->vma) {
+ up_read(&current->mm->mmap_sem);
DRM_ERROR("failed to copy vma.\n");
ret = -ENOMEM;
goto err_free_pages;
@@ -495,15 +496,16 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
ret = exynos_gem_get_pages_from_userptr(start & PAGE_MASK,
npages, pages, vma);
if (ret < 0) {
+ up_read(&current->mm->mmap_sem);
DRM_ERROR("failed to get user pages from userptr.\n");
goto err_put_vma;
}
+ up_read(&current->mm->mmap_sem);
g2d_userptr->pages = pages;
sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
if (!sgt) {
- DRM_ERROR("failed to allocate sg table.\n");
ret = -ENOMEM;
goto err_free_userptr;
}
@@ -543,7 +545,6 @@ err_sg_free_table:
err_free_sgt:
kfree(sgt);
- sgt = NULL;
err_free_userptr:
exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
@@ -554,10 +555,10 @@ err_put_vma:
exynos_gem_put_vma(g2d_userptr->vma);
err_free_pages:
- kfree(pages);
+ drm_free_large(pages);
+
+err_free:
kfree(g2d_userptr);
- pages = NULL;
- g2d_userptr = NULL;
return ERR_PTR(ret);
}
@@ -612,7 +613,7 @@ static enum g2d_reg_type g2d_get_reg_type(int reg_offset)
reg_type = REG_TYPE_NONE;
DRM_ERROR("Unknown register offset![%d]\n", reg_offset);
break;
- };
+ }
return reg_type;
}
@@ -810,9 +811,11 @@ static void g2d_dma_start(struct g2d_data *g2d,
struct g2d_cmdlist_node *node =
list_first_entry(&runqueue_node->run_cmdlist,
struct g2d_cmdlist_node, list);
+ int ret;
- pm_runtime_get_sync(g2d->dev);
- clk_enable(g2d->gate_clk);
+ ret = pm_runtime_get_sync(g2d->dev);
+ if (ret < 0)
+ return;
writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR);
writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND);
@@ -865,7 +868,6 @@ static void g2d_runqueue_worker(struct work_struct *work)
runqueue_work);
mutex_lock(&g2d->runqueue_mutex);
- clk_disable(g2d->gate_clk);
pm_runtime_put_sync(g2d->dev);
complete(&g2d->runqueue_node->complete);
@@ -1090,8 +1092,6 @@ int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
e = kzalloc(sizeof(*node->event), GFP_KERNEL);
if (!e) {
- dev_err(dev, "failed to allocate event\n");
-
spin_lock_irqsave(&drm_dev->event_lock, flags);
file->event_space += sizeof(e->event);
spin_unlock_irqrestore(&drm_dev->event_lock, flags);
@@ -1132,7 +1132,7 @@ int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
* G2D interrupt event once current command list execution is
* finished.
* Otherwise only ACF bit should be set to INTEN register so
- * that one interrupt is occured after all command lists
+ * that one interrupt is occurred after all command lists
* have been completed.
*/
if (node->event) {
@@ -1321,10 +1321,8 @@ static int g2d_open(struct drm_device *drm_dev, struct device *dev,
struct exynos_drm_g2d_private *g2d_priv;
g2d_priv = kzalloc(sizeof(*g2d_priv), GFP_KERNEL);
- if (!g2d_priv) {
- dev_err(dev, "failed to allocate g2d private data\n");
+ if (!g2d_priv)
return -ENOMEM;
- }
g2d_priv->dev = dev;
file_priv->g2d_priv = g2d_priv;
@@ -1380,10 +1378,8 @@ static int g2d_probe(struct platform_device *pdev)
int ret;
g2d = devm_kzalloc(dev, sizeof(*g2d), GFP_KERNEL);
- if (!g2d) {
- dev_err(dev, "failed to allocate driver data\n");
+ if (!g2d)
return -ENOMEM;
- }
g2d->runqueue_slab = kmem_cache_create("g2d_runqueue_slab",
sizeof(struct g2d_runqueue_node), 0, 0, NULL);
@@ -1518,15 +1514,38 @@ static int g2d_resume(struct device *dev)
}
#endif
-static SIMPLE_DEV_PM_OPS(g2d_pm_ops, g2d_suspend, g2d_resume);
+#ifdef CONFIG_PM_RUNTIME
+static int g2d_runtime_suspend(struct device *dev)
+{
+ struct g2d_data *g2d = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(g2d->gate_clk);
+
+ return 0;
+}
+
+static int g2d_runtime_resume(struct device *dev)
+{
+ struct g2d_data *g2d = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(g2d->gate_clk);
+ if (ret < 0)
+ dev_warn(dev, "failed to enable clock.\n");
+
+ return ret;
+}
+#endif
+
+static const struct dev_pm_ops g2d_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(g2d_suspend, g2d_resume)
+ SET_RUNTIME_PM_OPS(g2d_runtime_suspend, g2d_runtime_resume, NULL)
+};
-#ifdef CONFIG_OF
static const struct of_device_id exynos_g2d_match[] = {
{ .compatible = "samsung,exynos5250-g2d" },
{},
};
-MODULE_DEVICE_TABLE(of, exynos_g2d_match);
-#endif
struct platform_driver g2d_driver = {
.probe = g2d_probe,
@@ -1535,6 +1554,6 @@ struct platform_driver g2d_driver = {
.name = "s5p-g2d",
.owner = THIS_MODULE,
.pm = &g2d_pm_ops,
- .of_match_table = of_match_ptr(exynos_g2d_match),
+ .of_match_table = exynos_g2d_match,
},
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 11:33:10 +0000