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Unverified Commit 252163a6 authored by Sugar Zhang's avatar Sugar Zhang Committed by Mark Brown
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ASoC: rockchip: pdm: optimize clear logic 



There is no need to reset controller every time, do this
once in pdm_probe.

Signed-off-by: default avatarSugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a7980cd2

sound/soc/rockchip/rockchip_pdm.c

+2 −3
Original line number Diff line number Diff line
@@ -183,9 +183,6 @@ static int rockchip_pdm_hw_params(struct snd_pcm_substream *substream, 
				   val);

		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL, PDM_DMA_RDL_MSK,

				   PDM_DMA_RDL(16));

		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,

				   PDM_RX_MASK | PDM_RX_CLR_MASK,

				   PDM_RX_STOP | PDM_RX_CLR_WR);

	}



	return 0;
@@ -353,6 +350,7 @@ static bool rockchip_pdm_volatile_reg(struct device *dev, unsigned int reg) 
{

	switch (reg) {

	case PDM_SYSCONFIG:

	case PDM_FIFO_CTRL:

	case PDM_INT_CLR:

	case PDM_INT_ST:

		return true;
@@ -436,6 +434,7 @@ static int rockchip_pdm_probe(struct platform_device *pdev) 
		goto err_suspend;

	}



	rockchip_pdm_rxctrl(pdm, 0);

	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);

	if (ret) {

		dev_err(&pdev->dev, "could not register pcm: %d\n", ret);