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Commit 89f8b85e authored by Inki Dae's avatar Inki Dae Committed by Inki Dae
Browse files

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



This patch just changes clk_enable/disable to
clk_prepare_enable/clk_disable_unprepare, and
adds related exception codes.

Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
parent de1d3677

drivers/gpu/drm/exynos/exynos_drm_g2d.c

+14 −3
Original line number Diff line number Diff line
@@ -806,9 +806,20 @@ 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 +872,7 @@ 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);