Merge remote-tracking branches 'asoc/topic/omap', 'asoc/topic/pxa',...

Merge remote-tracking branches 'asoc/topic/omap', 'asoc/topic/pxa', 'asoc/topic/rockchip' and 'asoc/topic/rt5514' into asoc-next

Documentation/devicetree/bindings/sound/rockchip,pdm.txt

+* Rockchip PDM controller
+
+Required properties:
+
+- compatible: "rockchip,pdm"
+- reg: physical base address of the controller and length of memory mapped
+  region.
+- dmas: DMA specifiers for rx dma. See the DMA client binding,
+	Documentation/devicetree/bindings/dma/dma.txt
+- dma-names: should include "rx".
+- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
+- clock-names: should contain following:
+   - "pdm_hclk": clock for PDM BUS
+   - "pdm_clk" : clock for PDM controller
+- pinctrl-names: Must contain a "default" entry.
+- pinctrl-N: One property must exist for each entry in
+	     pinctrl-names. See ../pinctrl/pinctrl-bindings.txt
+	     for details of the property values.
+
+Example for rk3328 PDM controller:
+
+pdm: pdm@ff040000 {
+	compatible = "rockchip,pdm";
+	reg = <0x0 0xff040000 0x0 0x1000>;
+	clocks = <&clk_pdm>, <&clk_gates28 0>;
+	clock-names = "pdm_clk", "pdm_hclk";
+	dmas = <&pdma 16>;
+	#dma-cells = <1>;
+	dma-names = "rx";
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pdmm0_clk
+		     &pdmm0_fsync
+		     &pdmm0_sdi0
+		     &pdmm0_sdi1
+		     &pdmm0_sdi2
+		     &pdmm0_sdi3>;
+	pinctrl-1 = <&pdmm0_sleep>;
+	status = "disabled";
+};

Documentation/devicetree/bindings/sound/rockchip-spdif.txt

@@ -9,7 +9,9 @@ Required properties:
 - compatible: should be one of the following:
    - "rockchip,rk3066-spdif"
    - "rockchip,rk3188-spdif"
+   - "rockchip,rk3228-spdif"
    - "rockchip,rk3288-spdif"
+   - "rockchip,rk3328-spdif"
    - "rockchip,rk3366-spdif"
    - "rockchip,rk3368-spdif"
    - "rockchip,rk3399-spdif"

sound/soc/codecs/rt5514.c

@@ -9,6 +9,7 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/acpi.h>
 #include <linux/fs.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
@@ -906,9 +907,23 @@ static int rt5514_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 	if (rx_mask || tx_mask)
 		val |= RT5514_TDM_MODE;
 
-	if (slots == 4)
+	switch (slots) {
+	case 4:
 		val |= RT5514_TDMSLOT_SEL_RX_4CH | RT5514_TDMSLOT_SEL_TX_4CH;
+		break;
+
+	case 6:
+		val |= RT5514_TDMSLOT_SEL_RX_6CH | RT5514_TDMSLOT_SEL_TX_6CH;
+		break;
 
+	case 8:
+		val |= RT5514_TDMSLOT_SEL_RX_8CH | RT5514_TDMSLOT_SEL_TX_8CH;
+		break;
+
+	case 2:
+	default:
+		break;
+	}
 
 	switch (slot_width) {
 	case 20:
@@ -919,6 +934,10 @@ static int rt5514_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 		val |= RT5514_CH_LEN_RX_24 | RT5514_CH_LEN_TX_24;
 		break;
 
+	case 25:
+		val |= RT5514_TDM_MODE2;
+		break;
+
 	case 32:
 		val |= RT5514_CH_LEN_RX_32 | RT5514_CH_LEN_TX_32;
 		break;
@@ -930,7 +949,8 @@ static int rt5514_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
 
 	regmap_update_bits(rt5514->regmap, RT5514_I2S_CTRL1, RT5514_TDM_MODE |
 		RT5514_TDMSLOT_SEL_RX_MASK | RT5514_TDMSLOT_SEL_TX_MASK |
-		RT5514_CH_LEN_RX_MASK | RT5514_CH_LEN_TX_MASK, val);
+		RT5514_CH_LEN_RX_MASK | RT5514_CH_LEN_TX_MASK |
+		RT5514_TDM_MODE2, val);
 
 	return 0;
 }
@@ -1076,6 +1096,14 @@ static const struct of_device_id rt5514_of_match[] = {
 MODULE_DEVICE_TABLE(of, rt5514_of_match);
 #endif
 
+#ifdef CONFIG_ACPI
+static struct acpi_device_id rt5514_acpi_match[] = {
+	{ "10EC5514", 0},
+	{},
+};
+MODULE_DEVICE_TABLE(acpi, rt5514_acpi_match);
+#endif
+
 static int rt5514_parse_dt(struct rt5514_priv *rt5514, struct device *dev)
 {
 	device_property_read_u32(dev, "realtek,dmic-init-delay-ms",
@@ -1179,6 +1207,7 @@ static const struct dev_pm_ops rt5514_i2_pm_ops = {
 static struct i2c_driver rt5514_i2c_driver = {
 	.driver = {
 		.name = "rt5514",
+		.acpi_match_table = ACPI_PTR(rt5514_acpi_match),
 		.of_match_table = of_match_ptr(rt5514_of_match),
 		.pm = &rt5514_i2_pm_ops,
 	},

sound/soc/codecs/rt5514.h

@@ -117,6 +117,8 @@
 #define RT5514_POW_ADCFEDL_BIT			0
 
 /* RT5514_I2S_CTRL1 (0x2010) */
+#define RT5514_TDM_MODE2			(0x1 << 30)
+#define RT5514_TDM_MODE2_SFT			30
 #define RT5514_TDM_MODE				(0x1 << 28)
 #define RT5514_TDM_MODE_SFT			28
 #define RT5514_I2S_LR_MASK			(0x1 << 26)
@@ -136,6 +138,8 @@
 #define RT5514_TDMSLOT_SEL_RX_MASK		(0x3 << 10)
 #define RT5514_TDMSLOT_SEL_RX_SFT		10
 #define RT5514_TDMSLOT_SEL_RX_4CH		(0x1 << 10)
+#define RT5514_TDMSLOT_SEL_RX_6CH		(0x2 << 10)
+#define RT5514_TDMSLOT_SEL_RX_8CH		(0x3 << 10)
 #define RT5514_CH_LEN_RX_MASK			(0x3 << 8)
 #define RT5514_CH_LEN_RX_SFT			8
 #define RT5514_CH_LEN_RX_16			(0x0 << 8)
@@ -145,6 +149,8 @@
 #define RT5514_TDMSLOT_SEL_TX_MASK		(0x3 << 6)
 #define RT5514_TDMSLOT_SEL_TX_SFT		6
 #define RT5514_TDMSLOT_SEL_TX_4CH		(0x1 << 6)
+#define RT5514_TDMSLOT_SEL_TX_6CH		(0x2 << 6)
+#define RT5514_TDMSLOT_SEL_TX_8CH		(0x3 << 6)
 #define RT5514_CH_LEN_TX_MASK			(0x3 << 4)
 #define RT5514_CH_LEN_TX_SFT			4
 #define RT5514_CH_LEN_TX_16			(0x0 << 4)

sound/soc/omap/mcbsp.c

@@ -835,15 +835,11 @@ static ssize_t dma_op_mode_store(struct device *dev,
 				const char *buf, size_t size)
 {
 	struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
-	const char * const *s;
-	int i = 0;
-
-	for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++)
-		if (sysfs_streq(buf, *s))
-			break;
+	int i;
 
-	if (i == ARRAY_SIZE(dma_op_modes))
-		return -EINVAL;
+	i = sysfs_match_string(dma_op_modes, buf);
+	if (i < 0)
+		return i;
 
 	spin_lock_irq(&mcbsp->lock);
 	if (!mcbsp->free) {

sound/soc/pxa/Kconfig

 config SND_PXA2XX_SOC
 	tristate "SoC Audio for the Intel PXA2xx chip"
-	depends on ARCH_PXA
+	depends on ARCH_PXA || COMPILE_TEST
 	select SND_PXA2XX_LIB
 	help
 	  Say Y or M if you want to add support for codecs attached to

sound/soc/rockchip/Kconfig

@@ -15,6 +15,15 @@ config SND_SOC_ROCKCHIP_I2S
 	  Rockchip I2S device. The device supports upto maximum of
 	  8 channels each for play and record.
 
+config SND_SOC_ROCKCHIP_PDM
+	tristate "Rockchip PDM Controller Driver"
+	depends on CLKDEV_LOOKUP && SND_SOC_ROCKCHIP
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for PDM driver for
+	  Rockchip PDM Controller. The Controller supports up to maximum of
+	  8 channels record.
+
 config SND_SOC_ROCKCHIP_SPDIF
 	tristate "Rockchip SPDIF Device Driver"
 	depends on CLKDEV_LOOKUP && SND_SOC_ROCKCHIP

sound/soc/rockchip/Makefile

 # ROCKCHIP Platform Support
 snd-soc-rockchip-i2s-objs := rockchip_i2s.o
+snd-soc-rockchip-pdm-objs := rockchip_pdm.o
 snd-soc-rockchip-spdif-objs := rockchip_spdif.o
 
 obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-rockchip-i2s.o
+obj-$(CONFIG_SND_SOC_ROCKCHIP_PDM) += snd-soc-rockchip-pdm.o
 obj-$(CONFIG_SND_SOC_ROCKCHIP_SPDIF) += snd-soc-rockchip-spdif.o
 
 snd-soc-rockchip-max98090-objs := rockchip_max98090.o

sound/soc/rockchip/rockchip_i2s.c

@@ -206,7 +206,21 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 
 	regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);
 
-	mask = I2S_TXCR_IBM_MASK;
+	mask = I2S_CKR_CKP_MASK;
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		val = I2S_CKR_CKP_NEG;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		val = I2S_CKR_CKP_POS;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(i2s->regmap, I2S_CKR, mask, val);
+
+	mask = I2S_TXCR_IBM_MASK | I2S_TXCR_TFS_MASK | I2S_TXCR_PBM_MASK;
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_RIGHT_J:
 		val = I2S_TXCR_IBM_RSJM;
@@ -217,13 +231,19 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 	case SND_SOC_DAIFMT_I2S:
 		val = I2S_TXCR_IBM_NORMAL;
 		break;
+	case SND_SOC_DAIFMT_DSP_A: /* PCM no delay mode */
+		val = I2S_TXCR_TFS_PCM;
+		break;
+	case SND_SOC_DAIFMT_DSP_B: /* PCM delay 1 mode */
+		val = I2S_TXCR_TFS_PCM | I2S_TXCR_PBM_MODE(1);
+		break;
 	default:
 		return -EINVAL;
 	}
 
 	regmap_update_bits(i2s->regmap, I2S_TXCR, mask, val);
 
-	mask = I2S_RXCR_IBM_MASK;
+	mask = I2S_RXCR_IBM_MASK | I2S_RXCR_TFS_MASK | I2S_RXCR_PBM_MASK;
 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 	case SND_SOC_DAIFMT_RIGHT_J:
 		val = I2S_RXCR_IBM_RSJM;
@@ -234,6 +254,12 @@ static int rockchip_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
 	case SND_SOC_DAIFMT_I2S:
 		val = I2S_RXCR_IBM_NORMAL;
 		break;
+	case SND_SOC_DAIFMT_DSP_A: /* PCM no delay mode */
+		val = I2S_RXCR_TFS_PCM;
+		break;
+	case SND_SOC_DAIFMT_DSP_B: /* PCM delay 1 mode */
+		val = I2S_RXCR_TFS_PCM | I2S_RXCR_PBM_MODE(1);
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -617,12 +643,13 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 			goto err_pm_disable;
 	}
 
-	soc_dai = devm_kzalloc(&pdev->dev,
+	soc_dai = devm_kmemdup(&pdev->dev, &rockchip_i2s_dai,
 			       sizeof(*soc_dai), GFP_KERNEL);
-	if (!soc_dai)
-		return -ENOMEM;
+	if (!soc_dai) {
+		ret = -ENOMEM;
+		goto err_pm_disable;
+	}
 
-	memcpy(soc_dai, &rockchip_i2s_dai, sizeof(*soc_dai));
 	if (!of_property_read_u32(node, "rockchip,playback-channels", &val)) {
 		if (val >= 2 && val <= 8)
 			soc_dai->playback.channels_max = val;

sound/soc/rockchip/rockchip_i2s.h

@@ -41,6 +41,7 @@
 #define I2S_TXCR_TFS_SHIFT	5
 #define I2S_TXCR_TFS_I2S	(0 << I2S_TXCR_TFS_SHIFT)
 #define I2S_TXCR_TFS_PCM	(1 << I2S_TXCR_TFS_SHIFT)
+#define I2S_TXCR_TFS_MASK	(1 << I2S_TXCR_TFS_SHIFT)
 #define I2S_TXCR_VDW_SHIFT	0
 #define I2S_TXCR_VDW(x)		((x - 1) << I2S_TXCR_VDW_SHIFT)
 #define I2S_TXCR_VDW_MASK	(0x1f << I2S_TXCR_VDW_SHIFT)
@@ -70,6 +71,7 @@
 #define I2S_RXCR_TFS_SHIFT	5
 #define I2S_RXCR_TFS_I2S	(0 << I2S_RXCR_TFS_SHIFT)
 #define I2S_RXCR_TFS_PCM	(1 << I2S_RXCR_TFS_SHIFT)
+#define I2S_RXCR_TFS_MASK	(1 << I2S_RXCR_TFS_SHIFT)
 #define I2S_RXCR_VDW_SHIFT	0
 #define I2S_RXCR_VDW(x)		((x - 1) << I2S_RXCR_VDW_SHIFT)
 #define I2S_RXCR_VDW_MASK	(0x1f << I2S_RXCR_VDW_SHIFT)
@@ -91,6 +93,7 @@
 #define I2S_CKR_CKP_SHIFT	26
 #define I2S_CKR_CKP_NEG		(0 << I2S_CKR_CKP_SHIFT)
 #define I2S_CKR_CKP_POS		(1 << I2S_CKR_CKP_SHIFT)
+#define I2S_CKR_CKP_MASK	(1 << I2S_CKR_CKP_SHIFT)
 #define I2S_CKR_RLP_SHIFT	25
 #define I2S_CKR_RLP_NORMAL	(0 << I2S_CKR_RLP_SHIFT)
 #define I2S_CKR_RLP_OPPSITE	(1 << I2S_CKR_RLP_SHIFT)

sound/soc/rockchip/rockchip_pdm.c

+/*
+ * Rockchip PDM ALSA SoC Digital Audio Interface(DAI)  driver
+ *
+ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm_params.h>
+
+#include "rockchip_pdm.h"
+
+#define PDM_DMA_BURST_SIZE	(16) /* size * width: 16*4 = 64 bytes */
+
+struct rk_pdm_dev {
+	struct device *dev;
+	struct clk *clk;
+	struct clk *hclk;
+	struct regmap *regmap;
+	struct snd_dmaengine_dai_dma_data capture_dma_data;
+};
+
+struct rk_pdm_clkref {
+	unsigned int sr;
+	unsigned int clk;
+};
+
+static struct rk_pdm_clkref clkref[] = {
+	{ 8000, 40960000 },
+	{ 11025, 56448000 },
+	{ 12000, 61440000 },
+};
+
+static unsigned int get_pdm_clk(unsigned int sr)
+{
+	unsigned int i, count, clk, div;
+
+	clk = 0;
+	if (!sr)
+		return clk;
+
+	count = ARRAY_SIZE(clkref);
+	for (i = 0; i < count; i++) {
+		if (sr % clkref[i].sr)
+			continue;
+		div = sr / clkref[i].sr;
+		if ((div & (div - 1)) == 0) {
+			clk = clkref[i].clk;
+			break;
+		}
+	}
+
+	return clk;
+}
+
+static inline struct rk_pdm_dev *to_info(struct snd_soc_dai *dai)
+{
+	return snd_soc_dai_get_drvdata(dai);
+}
+
+static void rockchip_pdm_rxctrl(struct rk_pdm_dev *pdm, int on)
+{
+	if (on) {
+		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL,
+				   PDM_DMA_RD_MSK, PDM_DMA_RD_EN);
+		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,
+				   PDM_RX_MASK, PDM_RX_START);
+	} else {
+		regmap_update_bits(pdm->regmap, PDM_DMA_CTRL,
+				   PDM_DMA_RD_MSK, PDM_DMA_RD_DIS);
+		regmap_update_bits(pdm->regmap, PDM_SYSCONFIG,
+				   PDM_RX_MASK | PDM_RX_CLR_MASK,
+				   PDM_RX_STOP | PDM_RX_CLR_WR);
+	}
+}
+
+static int rockchip_pdm_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *params,
+				  struct snd_soc_dai *dai)
+{
+	struct rk_pdm_dev *pdm = to_info(dai);
+	unsigned int val = 0;
+	unsigned int clk_rate, clk_div, samplerate;
+	int ret;
+
+	samplerate = params_rate(params);
+	clk_rate = get_pdm_clk(samplerate);
+	if (!clk_rate)
+		return -EINVAL;
+
+	ret = clk_set_rate(pdm->clk, clk_rate);
+	if (ret)
+		return -EINVAL;
+
+	clk_div = DIV_ROUND_CLOSEST(clk_rate, samplerate);
+
+	switch (clk_div) {
+	case 320:
+		val = PDM_CLK_320FS;
+		break;
+	case 640:
+		val = PDM_CLK_640FS;
+		break;
+	case 1280:
+		val = PDM_CLK_1280FS;
+		break;
+	case 2560:
+		val = PDM_CLK_2560FS;
+		break;
+	case 5120:
+		val = PDM_CLK_5120FS;
+		break;
+	default:
+		dev_err(pdm->dev, "unsupported div: %d\n", clk_div);
+		return -EINVAL;
+	}
+
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, PDM_DS_RATIO_MSK, val);
+	regmap_update_bits(pdm->regmap, PDM_HPF_CTRL,
+			   PDM_HPF_CF_MSK, PDM_HPF_60HZ);
+	regmap_update_bits(pdm->regmap, PDM_HPF_CTRL,
+			   PDM_HPF_LE | PDM_HPF_RE, PDM_HPF_LE | PDM_HPF_RE);
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, PDM_CLK_EN, PDM_CLK_EN);
+
+	val = 0;
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S8:
+		val |= PDM_VDW(8);
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		val |= PDM_VDW(16);
+		break;
+	case SNDRV_PCM_FORMAT_S20_3LE:
+		val |= PDM_VDW(20);
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		val |= PDM_VDW(24);
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		val |= PDM_VDW(32);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (params_channels(params)) {
+	case 8:
+		val |= PDM_PATH3_EN;
+		/* fallthrough */
+	case 6:
+		val |= PDM_PATH2_EN;
+		/* fallthrough */
+	case 4:
+		val |= PDM_PATH1_EN;
+		/* fallthrough */
+	case 2:
+		val |= PDM_PATH0_EN;
+		break;
+	default:
+		dev_err(pdm->dev, "invalid channel: %d\n",
+			params_channels(params));
+		return -EINVAL;
+	}
+
+	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+		regmap_update_bits(pdm->regmap, PDM_CTRL0,
+				   PDM_PATH_MSK | PDM_VDW_MSK,
+				   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;
+}
+
+static int rockchip_pdm_set_fmt(struct snd_soc_dai *cpu_dai,
+				unsigned int fmt)
+{
+	struct rk_pdm_dev *pdm = to_info(cpu_dai);
+	unsigned int mask = 0, val = 0;
+
+	mask = PDM_CKP_MSK;
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		val = PDM_CKP_NORMAL;
+		break;
+	case SND_SOC_DAIFMT_IB_NF:
+		val = PDM_CKP_INVERTED;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, mask, val);
+
+	return 0;
+}
+
+static int rockchip_pdm_trigger(struct snd_pcm_substream *substream, int cmd,
+				struct snd_soc_dai *dai)
+{
+	struct rk_pdm_dev *pdm = to_info(dai);
+	int ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			rockchip_pdm_rxctrl(pdm, 1);
+		break;
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+			rockchip_pdm_rxctrl(pdm, 0);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int rockchip_pdm_dai_probe(struct snd_soc_dai *dai)
+{
+	struct rk_pdm_dev *pdm = to_info(dai);
+
+	dai->capture_dma_data = &pdm->capture_dma_data;
+
+	return 0;
+}
+
+static struct snd_soc_dai_ops rockchip_pdm_dai_ops = {
+	.set_fmt = rockchip_pdm_set_fmt,
+	.trigger = rockchip_pdm_trigger,
+	.hw_params = rockchip_pdm_hw_params,
+};
+
+#define ROCKCHIP_PDM_RATES SNDRV_PCM_RATE_8000_192000
+#define ROCKCHIP_PDM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
+			      SNDRV_PCM_FMTBIT_S20_3LE | \
+			      SNDRV_PCM_FMTBIT_S24_LE | \
+			      SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver rockchip_pdm_dai = {
+	.probe = rockchip_pdm_dai_probe,
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 2,
+		.channels_max = 8,
+		.rates = ROCKCHIP_PDM_RATES,
+		.formats = ROCKCHIP_PDM_FORMATS,
+	},
+	.ops = &rockchip_pdm_dai_ops,
+	.symmetric_rates = 1,
+};
+
+static const struct snd_soc_component_driver rockchip_pdm_component = {
+	.name = "rockchip-pdm",
+};
+
+static int rockchip_pdm_runtime_suspend(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+
+	clk_disable_unprepare(pdm->clk);
+	clk_disable_unprepare(pdm->hclk);
+
+	return 0;
+}
+
+static int rockchip_pdm_runtime_resume(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_prepare_enable(pdm->clk);
+	if (ret) {
+		dev_err(pdm->dev, "clock enable failed %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(pdm->hclk);
+	if (ret) {
+		dev_err(pdm->dev, "hclock enable failed %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static bool rockchip_pdm_wr_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case PDM_SYSCONFIG:
+	case PDM_CTRL0:
+	case PDM_CTRL1:
+	case PDM_CLK_CTRL:
+	case PDM_HPF_CTRL:
+	case PDM_FIFO_CTRL:
+	case PDM_DMA_CTRL:
+	case PDM_INT_EN:
+	case PDM_INT_CLR:
+	case PDM_DATA_VALID:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rockchip_pdm_rd_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case PDM_SYSCONFIG:
+	case PDM_CTRL0:
+	case PDM_CTRL1:
+	case PDM_CLK_CTRL:
+	case PDM_HPF_CTRL:
+	case PDM_FIFO_CTRL:
+	case PDM_DMA_CTRL:
+	case PDM_INT_EN:
+	case PDM_INT_CLR:
+	case PDM_INT_ST:
+	case PDM_DATA_VALID:
+	case PDM_VERSION:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rockchip_pdm_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case PDM_SYSCONFIG:
+	case PDM_INT_CLR:
+	case PDM_INT_ST:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config rockchip_pdm_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = PDM_VERSION,
+	.writeable_reg = rockchip_pdm_wr_reg,
+	.readable_reg = rockchip_pdm_rd_reg,
+	.volatile_reg = rockchip_pdm_volatile_reg,
+	.cache_type = REGCACHE_FLAT,
+};
+
+static int rockchip_pdm_probe(struct platform_device *pdev)
+{
+	struct rk_pdm_dev *pdm;
+	struct resource *res;
+	void __iomem *regs;
+	int ret;
+
+	pdm = devm_kzalloc(&pdev->dev, sizeof(*pdm), GFP_KERNEL);
+	if (!pdm)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	regs = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	pdm->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
+					    &rockchip_pdm_regmap_config);
+	if (IS_ERR(pdm->regmap))
+		return PTR_ERR(pdm->regmap);
+
+	pdm->capture_dma_data.addr = res->start + PDM_RXFIFO_DATA;
+	pdm->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	pdm->capture_dma_data.maxburst = PDM_DMA_BURST_SIZE;
+
+	pdm->dev = &pdev->dev;
+	dev_set_drvdata(&pdev->dev, pdm);
+
+	pdm->clk = devm_clk_get(&pdev->dev, "pdm_clk");
+	if (IS_ERR(pdm->clk))
+		return PTR_ERR(pdm->clk);
+
+	pdm->hclk = devm_clk_get(&pdev->dev, "pdm_hclk");
+	if (IS_ERR(pdm->hclk))
+		return PTR_ERR(pdm->hclk);
+
+	ret = clk_prepare_enable(pdm->hclk);
+	if (ret)
+		return ret;
+
+	pm_runtime_enable(&pdev->dev);
+	if (!pm_runtime_enabled(&pdev->dev)) {
+		ret = rockchip_pdm_runtime_resume(&pdev->dev);
+		if (ret)
+			goto err_pm_disable;
+	}
+
+	ret = devm_snd_soc_register_component(&pdev->dev,
+					      &rockchip_pdm_component,
+					      &rockchip_pdm_dai, 1);
+
+	if (ret) {
+		dev_err(&pdev->dev, "could not register dai: %d\n", ret);
+		goto err_suspend;
+	}
+
+	ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+	if (ret) {
+		dev_err(&pdev->dev, "could not register pcm: %d\n", ret);
+		goto err_suspend;
+	}
+
+	return 0;
+
+err_suspend:
+	if (!pm_runtime_status_suspended(&pdev->dev))
+		rockchip_pdm_runtime_suspend(&pdev->dev);
+err_pm_disable:
+	pm_runtime_disable(&pdev->dev);
+
+	clk_disable_unprepare(pdm->hclk);
+
+	return ret;
+}
+
+static int rockchip_pdm_remove(struct platform_device *pdev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(&pdev->dev);
+
+	pm_runtime_disable(&pdev->dev);
+	if (!pm_runtime_status_suspended(&pdev->dev))
+		rockchip_pdm_runtime_suspend(&pdev->dev);
+
+	clk_disable_unprepare(pdm->clk);
+	clk_disable_unprepare(pdm->hclk);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int rockchip_pdm_suspend(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+
+	regcache_mark_dirty(pdm->regmap);
+
+	return 0;
+}
+
+static int rockchip_pdm_resume(struct device *dev)
+{
+	struct rk_pdm_dev *pdm = dev_get_drvdata(dev);
+	int ret;
+
+	ret = pm_runtime_get_sync(dev);
+	if (ret < 0)
+		return ret;
+
+	ret = regcache_sync(pdm->regmap);
+
+	pm_runtime_put(dev);
+
+	return ret;
+}
+#endif
+
+static const struct dev_pm_ops rockchip_pdm_pm_ops = {
+	SET_RUNTIME_PM_OPS(rockchip_pdm_runtime_suspend,
+			   rockchip_pdm_runtime_resume, NULL)
+	SET_SYSTEM_SLEEP_PM_OPS(rockchip_pdm_suspend, rockchip_pdm_resume)
+};
+
+static const struct of_device_id rockchip_pdm_match[] = {
+	{ .compatible = "rockchip,pdm", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, rockchip_pdm_match);
+
+static struct platform_driver rockchip_pdm_driver = {
+	.probe  = rockchip_pdm_probe,
+	.remove = rockchip_pdm_remove,
+	.driver = {
+		.name = "rockchip-pdm",
+		.of_match_table = of_match_ptr(rockchip_pdm_match),
+		.pm = &rockchip_pdm_pm_ops,
+	},
+};
+
+module_platform_driver(rockchip_pdm_driver);
+
+MODULE_AUTHOR("Sugar <sugar.zhang@rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip PDM Controller Driver");
+MODULE_LICENSE("GPL v2");

sound/soc/rockchip/rockchip_pdm.h

+/*
+ * Rockchip PDM ALSA SoC Digital Audio Interface(DAI)  driver
+ *
+ * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _ROCKCHIP_PDM_H
+#define _ROCKCHIP_PDM_H
+
+/* PDM REGS */
+#define PDM_SYSCONFIG	(0x0000)
+#define PDM_CTRL0	(0x0004)
+#define PDM_CTRL1	(0x0008)
+#define PDM_CLK_CTRL	(0x000c)
+#define PDM_HPF_CTRL	(0x0010)
+#define PDM_FIFO_CTRL	(0x0014)
+#define PDM_DMA_CTRL	(0x0018)
+#define PDM_INT_EN	(0x001c)
+#define PDM_INT_CLR	(0x0020)
+#define PDM_INT_ST	(0x0024)
+#define PDM_RXFIFO_DATA	(0x0030)
+#define PDM_DATA_VALID	(0x0054)
+#define PDM_VERSION	(0x0058)
+
+/* PDM_SYSCONFIG */
+#define PDM_RX_MASK		(0x1 << 2)
+#define PDM_RX_START		(0x1 << 2)
+#define PDM_RX_STOP		(0x0 << 2)
+#define PDM_RX_CLR_MASK		(0x1 << 0)
+#define PDM_RX_CLR_WR		(0x1 << 0)
+#define PDM_RX_CLR_DONE		(0x0 << 0)
+
+/* PDM CTRL0 */
+#define PDM_PATH_MSK		(0xf << 27)
+#define PDM_PATH3_EN		BIT(30)
+#define PDM_PATH2_EN		BIT(29)
+#define PDM_PATH1_EN		BIT(28)
+#define PDM_PATH0_EN		BIT(27)
+#define PDM_HWT_EN		BIT(26)
+#define PDM_VDW_MSK		(0x1f << 0)
+#define PDM_VDW(X)		((X - 1) << 0)
+
+/* PDM CLK CTRL */
+#define PDM_CLK_MSK		BIT(5)
+#define PDM_CLK_EN		BIT(5)
+#define PDM_CLK_DIS		(0x0 << 5)
+#define PDM_CKP_MSK		BIT(3)
+#define PDM_CKP_NORMAL		(0x0 << 3)
+#define PDM_CKP_INVERTED	BIT(3)
+#define PDM_DS_RATIO_MSK	(0x7 << 0)
+#define PDM_CLK_320FS		(0x0 << 0)
+#define PDM_CLK_640FS		(0x1 << 0)
+#define PDM_CLK_1280FS		(0x2 << 0)
+#define PDM_CLK_2560FS		(0x3 << 0)
+#define PDM_CLK_5120FS		(0x4 << 0)
+
+/* PDM HPF CTRL */
+#define PDM_HPF_LE		BIT(3)
+#define PDM_HPF_RE		BIT(2)
+#define PDM_HPF_CF_MSK		(0x3 << 0)
+#define PDM_HPF_3P79HZ		(0x0 << 0)
+#define PDM_HPF_60HZ		(0x1 << 0)
+#define PDM_HPF_243HZ		(0x2 << 0)
+#define PDM_HPF_493HZ		(0x3 << 0)
+
+/* PDM DMA CTRL */
+#define PDM_DMA_RD_MSK		BIT(8)
+#define PDM_DMA_RD_EN		BIT(8)
+#define PDM_DMA_RD_DIS		(0x0 << 8)
+#define PDM_DMA_RDL_MSK		(0x7f << 0)
+#define PDM_DMA_RDL(X)		((X - 1) << 0)
+
+#endif /* _ROCKCHIP_PDM_H */

sound/soc/rockchip/rockchip_spdif.c

@@ -49,8 +49,12 @@ static const struct of_device_id rk_spdif_match[] = {
 	  .data = (void *)RK_SPDIF_RK3066 },
 	{ .compatible = "rockchip,rk3188-spdif",
 	  .data = (void *)RK_SPDIF_RK3188 },
+	{ .compatible = "rockchip,rk3228-spdif",
+	  .data = (void *)RK_SPDIF_RK3366 },
 	{ .compatible = "rockchip,rk3288-spdif",
 	  .data = (void *)RK_SPDIF_RK3288 },
+	{ .compatible = "rockchip,rk3328-spdif",
+	  .data = (void *)RK_SPDIF_RK3366 },
 	{ .compatible = "rockchip,rk3366-spdif",
 	  .data = (void *)RK_SPDIF_RK3366 },
 	{ .compatible = "rockchip,rk3368-spdif",