Merge series "Patches to update for rockchip pdm" from Sugar Zhang <sugar.zhang@rock-chips.com>:

These patches fixup or update for rockchip pdm.

Changes in v4:
- Acked by Rob Herring

Changes in v3:
- Fix property 'path-map' suggested by Rob Herring.

Changes in v2:
- Fix yamllint errors.

Sugar Zhang (7):
  ASoC: rockchip: Add support for rv1126 pdm
  ASoC: dt-bindings: rockchip: Add binding for rv1126 pdm
  ASoC: rockchip: pdm: Add support for rk3568 pdm
  ASoC: dt-bindings: rockchip: Add binding for rk3568 pdm
  ASoC: rockchip: pdm: Add support for path map
  ASoC: dt-bindings: rockchip: pdm: Document property
    'rockchip,path-map'
  ASoC: dt-bindings: rockchip: Convert pdm bindings to yaml

 .../devicetree/bindings/sound/rockchip,pdm.txt     |  46 --------
 .../devicetree/bindings/sound/rockchip,pdm.yaml    | 120 +++++++++++++++++++++
 sound/soc/rockchip/rockchip_pdm.c                  | 112 +++++++++++++++++--
 sound/soc/rockchip/rockchip_pdm.h                  |   6 ++
 4 files changed, 232 insertions(+), 52 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/sound/rockchip,pdm.txt
 create mode 100644 Documentation/devicetree/bindings/sound/rockchip,pdm.yaml

--
2.7.4

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

-* Rockchip PDM controller
-
-Required properties:
-
-- compatible: "rockchip,pdm"
-  - "rockchip,px30-pdm"
-  - "rockchip,rk1808-pdm"
-  - "rockchip,rk3308-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
-- resets: a list of phandle + reset-specifer paris, one for each entry in reset-names.
-- reset-names: reset names, should include "pdm-m".
-- 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_sdi0
-		     &pdmm0_sdi1
-		     &pdmm0_sdi2
-		     &pdmm0_sdi3>;
-	pinctrl-1 = <&pdmm0_clk_sleep
-		     &pdmm0_sdi0_sleep
-		     &pdmm0_sdi1_sleep
-		     &pdmm0_sdi2_sleep
-		     &pdmm0_sdi3_sleep>;
-};

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

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/rockchip,pdm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip PDM controller
+
+description:
+  The Pulse Density Modulation Interface Controller (PDMC) is
+  a PDM interface controller and decoder that support PDM format.
+  It integrates a clock generator driving the PDM microphone
+  and embeds filters which decimate the incoming bit stream to
+  obtain most common audio rates.
+
+maintainers:
+  - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+  compatible:
+    enum:
+      - rockchip,pdm
+      - rockchip,px30-pdm
+      - rockchip,rk1808-pdm
+      - rockchip,rk3308-pdm
+      - rockchip,rk3568-pdm
+      - rockchip,rv1126-pdm
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock for PDM controller
+      - description: clock for PDM BUS
+
+  clock-names:
+    items:
+      - const: pdm_clk
+      - const: pdm_hclk
+
+  dmas:
+    maxItems: 1
+
+  dma-names:
+    items:
+      - const: rx
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    items:
+      - description: reset for PDM controller
+
+  reset-names:
+    items:
+      - const: pdm-m
+
+  rockchip,path-map:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    description:
+      Defines the mapping of PDM SDIx to PDM PATHx.
+      By default, they are mapped one-to-one.
+    maxItems: 4
+    uniqueItems: true
+    items:
+      enum: [ 0, 1, 2, 3 ]
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3328-cru.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/pinctrl/rockchip.h>
+
+    bus {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        pdm@ff040000 {
+            compatible = "rockchip,pdm";
+            reg = <0x0 0xff040000 0x0 0x1000>;
+            interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&cru SCLK_PDM>, <&cru HCLK_PDM>;
+            clock-names = "pdm_clk", "pdm_hclk";
+            dmas = <&dmac 16>;
+            dma-names = "rx";
+            #sound-dai-cells = <0>;
+            pinctrl-names = "default", "sleep";
+            pinctrl-0 = <&pdmm0_clk
+                         &pdmm0_sdi0
+                         &pdmm0_sdi1
+                         &pdmm0_sdi2
+                         &pdmm0_sdi3>;
+            pinctrl-1 = <&pdmm0_clk_sleep
+                         &pdmm0_sdi0_sleep
+                         &pdmm0_sdi1_sleep
+                         &pdmm0_sdi2_sleep
+                         &pdmm0_sdi3_sleep>;
+        };
+    };

sound/soc/rockchip/rockchip_pdm.c

@@ -20,10 +20,12 @@
 
 #define PDM_DMA_BURST_SIZE	(8) /* size * width: 8*4 = 32 bytes */
 #define PDM_SIGNOFF_CLK_RATE	(100000000)
+#define PDM_PATH_MAX		(4)
 
 enum rk_pdm_version {
 	RK_PDM_RK3229,
 	RK_PDM_RK3308,
+	RK_PDM_RV1126,
 };
 
 struct rk_pdm_dev {
@@ -121,6 +123,55 @@ static unsigned int get_pdm_ds_ratio(unsigned int sr)
 	return ratio;
 }
 
+static unsigned int get_pdm_cic_ratio(unsigned int clk)
+{
+	switch (clk) {
+	case 4096000:
+	case 5644800:
+	case 6144000:
+		return 0;
+	case 2048000:
+	case 2822400:
+	case 3072000:
+		return 1;
+	case 1024000:
+	case 1411200:
+	case 1536000:
+		return 2;
+	default:
+		return 1;
+	}
+}
+
+static unsigned int samplerate_to_bit(unsigned int samplerate)
+{
+	switch (samplerate) {
+	case 8000:
+	case 11025:
+	case 12000:
+		return 0;
+	case 16000:
+	case 22050:
+	case 24000:
+		return 1;
+	case 32000:
+		return 2;
+	case 44100:
+	case 48000:
+		return 3;
+	case 64000:
+	case 88200:
+	case 96000:
+		return 4;
+	case 128000:
+	case 176400:
+	case 192000:
+		return 5;
+	default:
+		return 1;
+	}
+}
+
 static inline struct rk_pdm_dev *to_info(struct snd_soc_dai *dai)
 {
 	return snd_soc_dai_get_drvdata(dai);
@@ -166,7 +217,8 @@ static int rockchip_pdm_hw_params(struct snd_pcm_substream *substream,
 	if (ret)
 		return -EINVAL;
 
-	if (pdm->version == RK_PDM_RK3308) {
+	if (pdm->version == RK_PDM_RK3308 ||
+	    pdm->version == RK_PDM_RV1126) {
 		rational_best_approximation(clk_out, clk_src,
 					    GENMASK(16 - 1, 0),
 					    GENMASK(16 - 1, 0),
@@ -194,8 +246,18 @@ static int rockchip_pdm_hw_params(struct snd_pcm_substream *substream,
 				   PDM_CLK_FD_RATIO_MSK,
 				   val);
 	}
-	val = get_pdm_ds_ratio(samplerate);
-	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, PDM_DS_RATIO_MSK, val);
+
+	if (pdm->version == RK_PDM_RV1126) {
+		val = get_pdm_cic_ratio(clk_out);
+		regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, PDM_CIC_RATIO_MSK, val);
+		val = samplerate_to_bit(samplerate);
+		regmap_update_bits(pdm->regmap, PDM_CTRL0,
+				   PDM_SAMPLERATE_MSK, PDM_SAMPLERATE(val));
+	} else {
+		val = get_pdm_ds_ratio(samplerate);
+		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,
@@ -441,9 +503,10 @@ static bool rockchip_pdm_precious_reg(struct device *dev, unsigned int reg)
 }
 
 static const struct reg_default rockchip_pdm_reg_defaults[] = {
-	{0x04, 0x78000017},
-	{0x08, 0x0bb8ea60},
-	{0x18, 0x0000001f},
+	{ PDM_CTRL0, 0x78000017 },
+	{ PDM_CTRL1, 0x0bb8ea60 },
+	{ PDM_CLK_CTRL, 0x0000e401 },
+	{ PDM_DMA_CTRL, 0x0000001f },
 };
 
 static const struct regmap_config rockchip_pdm_regmap_config = {
@@ -469,12 +532,44 @@ static const struct of_device_id rockchip_pdm_match[] __maybe_unused = {
 	  .data = (void *)RK_PDM_RK3308 },
 	{ .compatible = "rockchip,rk3308-pdm",
 	  .data = (void *)RK_PDM_RK3308 },
+	{ .compatible = "rockchip,rk3568-pdm",
+	  .data = (void *)RK_PDM_RV1126 },
+	{ .compatible = "rockchip,rv1126-pdm",
+	  .data = (void *)RK_PDM_RV1126 },
 	{},
 };
 MODULE_DEVICE_TABLE(of, rockchip_pdm_match);
 
+static int rockchip_pdm_path_parse(struct rk_pdm_dev *pdm, struct device_node *node)
+{
+	unsigned int path[PDM_PATH_MAX];
+	int cnt = 0, ret = 0, i = 0, val = 0, msk = 0;
+
+	cnt = of_count_phandle_with_args(node, "rockchip,path-map",
+					 NULL);
+	if (cnt != PDM_PATH_MAX)
+		return cnt;
+
+	ret = of_property_read_u32_array(node, "rockchip,path-map",
+					 path, cnt);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < cnt; i++) {
+		if (path[i] >= PDM_PATH_MAX)
+			return -EINVAL;
+		msk |= PDM_PATH_MASK(i);
+		val |= PDM_PATH(i, path[i]);
+	}
+
+	regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, msk, val);
+
+	return 0;
+}
+
 static int rockchip_pdm_probe(struct platform_device *pdev)
 {
+	struct device_node *node = pdev->dev.of_node;
 	const struct of_device_id *match;
 	struct rk_pdm_dev *pdm;
 	struct resource *res;
@@ -540,6 +635,11 @@ static int rockchip_pdm_probe(struct platform_device *pdev)
 	}
 
 	rockchip_pdm_rxctrl(pdm, 0);
+
+	ret = rockchip_pdm_path_parse(pdm, node);
+	if (ret != 0 && ret != -ENOENT)
+		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);

sound/soc/rockchip/rockchip_pdm.h

@@ -41,6 +41,8 @@
 #define PDM_PATH1_EN		BIT(28)
 #define PDM_PATH0_EN		BIT(27)
 #define PDM_HWT_EN		BIT(26)
+#define PDM_SAMPLERATE_MSK	GENMASK(7, 5)
+#define PDM_SAMPLERATE(x)	((x) << 5)
 #define PDM_VDW_MSK		(0x1f << 0)
 #define PDM_VDW(X)		((X - 1) << 0)
 
@@ -51,6 +53,9 @@
 #define PDM_FD_DENOMINATOR_MSK	GENMASK(15, 0)
 
 /* PDM CLK CTRL */
+#define PDM_PATH_SHIFT(x)	(8 + (x) * 2)
+#define PDM_PATH_MASK(x)	(0x3 << PDM_PATH_SHIFT(x))
+#define PDM_PATH(x, v)		((v) << PDM_PATH_SHIFT(x))
 #define PDM_CLK_FD_RATIO_MSK	BIT(6)
 #define PDM_CLK_FD_RATIO_40	(0X0 << 6)
 #define PDM_CLK_FD_RATIO_35	BIT(6)
@@ -66,6 +71,7 @@
 #define PDM_CLK_1280FS		(0x2 << 0)
 #define PDM_CLK_2560FS		(0x3 << 0)
 #define PDM_CLK_5120FS		(0x4 << 0)
+#define PDM_CIC_RATIO_MSK	(0x3 << 0)
 
 /* PDM HPF CTRL */
 #define PDM_HPF_LE		BIT(3)