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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.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index 42a5a5466075..eddea4941483 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>
@@ -806,9 +805,20 @@ 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;
+
+ ret = pm_runtime_get_sync(g2d->dev);
+ if (ret < 0) {
+ dev_warn(g2d->dev, "failed pm power on.\n");
+ return;
+ }
- pm_runtime_get_sync(g2d->dev);
- clk_enable(g2d->gate_clk);
+ ret = clk_prepare_enable(g2d->gate_clk);
+ if (ret < 0) {
+ dev_warn(g2d->dev, "failed to enable clock.\n");
+ pm_runtime_put_sync(g2d->dev);
+ 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 +871,7 @@ static void g2d_runqueue_worker(struct work_struct *work)
runqueue_work);
mutex_lock(&g2d->runqueue_mutex);
- clk_disable(g2d->gate_clk);
+ clk_disable_unprepare(g2d->gate_clk);
pm_runtime_put_sync(g2d->dev);
complete(&g2d->runqueue_node->complete);
@@ -1521,7 +1531,6 @@ 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 = {