diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_g2d.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_g2d.c | 57 |
1 files changed, 36 insertions, 21 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 42a5a5466075..3271fd4b1724 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" @@ -447,10 +447,8 @@ 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); @@ -500,7 +498,6 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev, sgt = kzalloc(sizeof(*sgt), GFP_KERNEL); if (!sgt) { - DRM_ERROR("failed to allocate sg table.\n"); ret = -ENOMEM; goto err_free_userptr; } @@ -806,9 +803,11 @@ 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); @@ -861,7 +860,6 @@ 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); @@ -1086,8 +1084,6 @@ 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); @@ -1317,10 +1313,8 @@ 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; @@ -1376,10 +1370,8 @@ 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); @@ -1514,15 +1506,38 @@ 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, @@ -1531,6 +1546,6 @@ 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, }, }; |