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-rw-r--r--Documentation/devicetree/bindings/sound/rockchip,pdm.txt46
-rw-r--r--Documentation/devicetree/bindings/sound/rockchip,pdm.yaml120
-rw-r--r--sound/soc/rockchip/rockchip_pdm.c112
-rw-r--r--sound/soc/rockchip/rockchip_pdm.h6
4 files changed, 232 insertions, 52 deletions
diff --git a/Documentation/devicetree/bindings/sound/rockchip,pdm.txt b/Documentation/devicetree/bindings/sound/rockchip,pdm.txt
deleted file mode 100644
index 98572a25122f..000000000000
--- a/Documentation/devicetree/bindings/sound/rockchip,pdm.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-* 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>;
-};
diff --git a/Documentation/devicetree/bindings/sound/rockchip,pdm.yaml b/Documentation/devicetree/bindings/sound/rockchip,pdm.yaml
new file mode 100644
index 000000000000..22e1cf6c0592
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rockchip,pdm.yaml
@@ -0,0 +1,120 @@
+# 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>;
+ };
+ };
diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c
index 38bd603eeb45..64d9891b6434 100644
--- a/sound/soc/rockchip/rockchip_pdm.c
+++ b/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);
diff --git a/sound/soc/rockchip/rockchip_pdm.h b/sound/soc/rockchip/rockchip_pdm.h
index 8e5bbafef7bb..cab977272ee6 100644
--- a/sound/soc/rockchip/rockchip_pdm.h
+++ b/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)
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-04 19:04:18 +0300