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dmaengine: qcom: bam_dma: disable runtime pm on remote controlled

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Remotely controlled BAM instance should not do any power management from
CPU side, as cpu can not reliably say if the BAM is busy or not.

Disable it for such instances.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Srinivas Kandagatla 2018-02-15 12:25:11 +00:00 committed by Vinod Koul
parent 54eb5e26cb
commit 5b4a68952a
1 changed files with 9 additions and 2 deletions
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11
drivers/dma/qcom/bam_dma.c
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@ -1333,6 +1333,11 @@ static int bam_dma_probe(struct platform_device *pdev)
if (ret)
goto err_unregister_dma;
if (bdev->controlled_remotely) {
pm_runtime_disable(&pdev->dev);
return 0;
}
pm_runtime_irq_safe(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, BAM_DMA_AUTOSUSPEND_DELAY);
pm_runtime_use_autosuspend(&pdev->dev);
@ -1416,7 +1421,8 @@ static int __maybe_unused bam_dma_suspend(struct device *dev)
{
struct bam_device *bdev = dev_get_drvdata(dev);
pm_runtime_force_suspend(dev);
if (!bdev->controlled_remotely)
pm_runtime_force_suspend(dev);
clk_unprepare(bdev->bamclk);
@ -1432,7 +1438,8 @@ static int __maybe_unused bam_dma_resume(struct device *dev)
if (ret)
return ret;
pm_runtime_force_resume(dev);
if (!bdev->controlled_remotely)
pm_runtime_force_resume(dev);
return 0;
}