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Commit b10d6350 authored by Inki Dae's avatar Inki Dae
Browse files

drm/exynos: add runtime pm interfaces to g2d driver 



This patch makes g2d power domain and clock to be controlled
through pm runtime interfaces instead of controlling them
respectively.

Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
parent a1bfacf4

drivers/gpu/drm/exynos/exynos_drm_g2d.c

+28 −12
Original line number Diff line number Diff line
@@ -808,17 +808,8 @@ static void g2d_dma_start(struct g2d_data *g2d, 
	int ret;



	ret = pm_runtime_get_sync(g2d->dev);

	if (ret < 0) {

		dev_warn(g2d->dev, "failed pm power on.\n");

	if (ret < 0)

		return;

	}



	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);
@@ -871,7 +862,6 @@ static void g2d_runqueue_worker(struct work_struct *work) 
					    runqueue_work);



	mutex_lock(&g2d->runqueue_mutex);

	clk_disable_unprepare(g2d->gate_clk);

	pm_runtime_put_sync(g2d->dev);



	complete(&g2d->runqueue_node->complete);
@@ -1524,7 +1514,33 @@ 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[] = {