enable wifi gpio

hc

2023-11-07 f45e756958099c35d6afb746df1d40a1c6302cfc

 kernel/sound/soc/rockchip/rockchip_pdm.c
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@@ -207,22 +207,35 @@
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 	return snd_soc_dai_get_drvdata(dai);
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 }
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-static void rockchip_pdm_drop_fifo(struct rk_pdm_dev *pdm)
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-{
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-	int cnt, val, i;
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-
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-	/* drop the dirty data */
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-	regmap_read(pdm->regmap, PDM_FIFO_CTRL, &cnt);
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-	for (i = 0; i < PDM_FIFO_CNT(cnt); i++)
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-		regmap_read(pdm->regmap, PDM_RXFIFO_DATA, &val);
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-}
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-
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 static void rockchip_pdm_rxctrl(struct rk_pdm_dev *pdm, int on)
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 {
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+	unsigned long flags;
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+
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 	if (on) {
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-		rockchip_pdm_drop_fifo(pdm);
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+		/* The PDM device need to delete some unused data
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+		 * since the pdm of various manufacturers can not
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+		 * be stable quickly. This is done by commit "ASoC:
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+		 * rockchip: pdm: Fix pop noise in the beginning".
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+		 *
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+		 * But we do not know how many data we delete, this
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+		 * cause channel disorder. For example, we record
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+		 * two channel 24-bit sound, then delete some starting
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+		 * data. Because the deleted starting data is uncertain,
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+		 * the next data may be left or right channel and cause
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+		 * channel disorder.
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+		 *
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+		 * Luckily, we can use the PDM_RX_CLR to fix this.
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+		 * Use the PDM_RX_CLR to clear fifo written data and
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+		 * address, but can not clear the read data and address.
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+		 * In initial state, the read data and address are zero.
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+		 */
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+		local_irq_save(flags);
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+		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,
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+				   PDM_RX_CLR_MASK,
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+				   PDM_RX_CLR_WR);
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 		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL,
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 				   PDM_DMA_RD_MSK, PDM_DMA_RD_EN);
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+		local_irq_restore(flags);
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 	} else {
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 		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL,
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 				   PDM_DMA_RD_MSK, PDM_DMA_RD_DIS);
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@@ -976,8 +989,10 @@
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 	if (ret != 0 && ret != -ENOENT)
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 		goto err_suspend;
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-	if (of_property_read_bool(node, "rockchip,no-dmaengine"))
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+	if (of_property_read_bool(node, "rockchip,no-dmaengine")) {
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+		dev_info(&pdev->dev, "Used for Multi-DAI\n");
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 		return 0;
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+	}
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 	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
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 	if (ret) {