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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: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
hifive-unleashed-5.1
Inki Dae 2013-07-24 15:44:30 +09:00
parent a1bfacf400
commit b10d6350a5
1 changed files with 28 additions and 12 deletions
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40
drivers/gpu/drm/exynos/exynos_drm_g2d.c
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@ -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[] = {