drm/exynos: consider common clock framework to g2d driver.

This patch just changes clk_enable/disable to
clk_prepare_enable/clk_disable_unprepare.

Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index 310fbe8..3925e44 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -812,7 +812,7 @@ static void g2d_dma_start(struct g2d_data *g2d,
                                                struct g2d_cmdlist_node, list);
 
        pm_runtime_get_sync(g2d->dev);
-       clk_enable(g2d->gate_clk);
+       clk_prepare_enable(g2d->gate_clk);
 
        writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR);
        writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND);
@@ -865,7 +865,7 @@ 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);