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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: Sugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sugar Zhang 2019-04-03 21:40:48 +08:00 committed by Mark Brown
parent a7980cd212
commit 252163a66a
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 3 deletions
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5
sound/soc/rockchip/rockchip_pdm.c
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@ -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);