[PATCH v1 04/12] ASoC: rockchip: pdm: optimize clear logic

[Sugar Zhang]

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

Signed-off-by: Sugar Zhang <sugar.zh...@rock-chips.com>
---

 sound/soc/rockchip/rockchip_pdm.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sound/soc/rockchip/rockchip_pdm.c 
b/sound/soc/rockchip/rockchip_pdm.c
index 8c1be59..abbb6d7 100644
--- a/sound/soc/rockchip/rockchip_pdm.c
+++ b/sound/soc/rockchip/rockchip_pdm.c
@@ -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;
@@ -355,6 +352,7 @@ 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;
@@ -438,6 +436,7 @@ 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);
-- 
2.7.4