Add audio driver for Starfive JH7100 SOC

Signed-off-by: Michael Yan <michael.yan@starfivetech.com>
Signed-off-by: Jenny Zhang <jenny.zhang@starfivetech.com>
Signed-off-by: Walker Chen <walker.chen@starfivetech.com>

Author: WalkerChenL

arch/riscv/boot/dts/starfive/jh7100-common.dtsi

@@ -413,6 +413,20 @@
 			slew-rate = <0>;
 		};
 	};
+
+	pwmdac_pins: pwmdac_0 {
+		pwmdac_pins {
+			pinmux = <GPIOMUX(23, GPO_PWMDAC_LEFT_OUT,
+				  GPO_ENABLE, GPI_NONE)>,
+				  <GPIOMUX(24, GPO_PWMDAC_RIGHT_OUT,
+				  GPO_ENABLE, GPI_NONE)>;
+			bias-disable;
+			drive-strength = <35>;
+			input-disable;
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
 };
 
 &i2c0 {
@@ -568,3 +582,9 @@
 	dr_mode = "host";
 	status = "okay";
 };
+
+&pwmdac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwmdac_pins>;
+	status = "okay";
+};

arch/riscv/boot/dts/starfive/jh7100.dtsi

@@ -229,6 +229,8 @@
 			snps,block-size = <4096 4096 4096 4096>;
 			snps,priority = <0 1 2 3>;
 			snps,axi-max-burst-len = <128>;
+			status = "okay";
+			dma-coherent;
 		};
 
 		crypto: crypto@100d0000 {
@@ -277,6 +279,14 @@
 			#clock-cells = <1>;
 		};
 
+		audioclk: clock-controller@10480000 {
+			compatible = "starfive,jh7100-audclk";
+			reg = <0x0 0x10480000 0x0 0x10000>;
+			clocks = <&osc_sys>, <&osc_aud>;
+			clock-names = "osc_sys", "osc_aud";
+			#clock-cells = <1>;
+                };
+
 		otp: otp@11810000 {
 			compatible = "starfive,fu740-otp";
 			reg = <0x0 0x11810000 0x0 0x10000>;
@@ -652,5 +662,137 @@
 			dsp@0 {
 			};
 		};
+
+		i2sadc0: i2sadc0@10400000 {
+			compatible = "snps,designware-i2sadc0";
+			reg = <0x0 0x10400000 0x0 0x1000>;
+			interrupt-parent = <&plic>;
+			clocks = <&clkgen JH7100_CLK_APB1_BUS>;
+			clock-names = "i2sclk";
+			#sound-dai-cells = <0>;
+			dmas = <&dma2p 28>;
+			dma-names = "rx";
+		};
+		
+		i2svad: i2svad@10420000 {
+			compatible = "starfive,sf-i2svad";
+			reg = <0x0 0x10420000 0x0 0x1000> ;
+			interrupt-parent = <&plic>;
+			interrupts = <60>, <61>;
+			interrupt-names = "spintr", "slintr";
+			clocks = <&audioclk JH7100_CLK_APB_I2SVAD>;
+			clock-names = "i2svad_apb";
+			resets = <&audrst JH7100_AUDRSTN_APB_I2SVAD>,
+				<&audrst JH7100_AUDRSTN_I2SVAD_SRST>;
+			reset-names = "apb_i2svad", "i2svad_srst";
+			#sound-dai-cells = <0>;
+		};
+
+		i2sdac0: i2sdac0@10450000 {
+			compatible = "snps,designware-i2sdac0";
+			reg = <0x0 0x10450000 0x0 0x1000>;
+			interrupt-parent = <&plic>;
+			clocks = <&audioclk JH7100_CLK_DAC_MCLK>,
+				 <&audioclk JH7100_CLK_I2S0_BCLK>,
+				 <&audioclk JH7100_CLK_I2S0_LRCLK>,
+				 <&audioclk JH7100_CLK_APB_I2S0>;
+			clock-names = "dac_mclk", "i2sdac0_bclk", "i2sdac0_lrclk", "i2sdac_apb";
+			resets = <&audrst JH7100_AUDRSTN_APB_I2SDAC>,
+				<&audrst JH7100_AUDRSTN_I2SDAC_SRST>;
+			reset-names = "apb_i2sdac", "i2sdac_srst";
+			#sound-dai-cells = <0>;
+			dmas = <&dma2p 30>;
+			dma-names = "tx";
+		};
+		
+		i2sdac1: i2sdac1@10460000 {
+			compatible = "snps,designware-i2sdac1";
+			reg = <0x0 0x10460000 0x0 0x1000>;
+			interrupt-parent = <&plic>;
+			clocks = <&audioclk JH7100_CLK_DAC_MCLK>,
+				 <&audioclk JH7100_CLK_I2S1_BCLK>,
+				 <&audioclk JH7100_CLK_I2S1_LRCLK>,
+				 <&audioclk JH7100_CLK_APB_I2S1>;
+			clock-names = "dac_mclk", "i2sdac1_bclk", "i2sdac1_lrclk", "i2s1_apb";
+			resets = <&audrst JH7100_AUDRSTN_APB_I2S1>,
+				<&audrst JH7100_AUDRSTN_I2S1_SRST>;
+			#sound-dai-cells = <0>;
+			dmas = <&dma2p 31>;
+			dma-names = "tx";
+		};
+
+		i2sdac16k: i2sdac16k@10470000 {
+			compatible = "snps,designware-i2sdac16k";
+			reg = <0x0 0x10470000 0x0 0x1000>;
+			interrupt-parent = <&plic>;
+			clocks = <&clkgen JH7100_CLK_APB1_BUS>;
+			clock-names = "i2sclk";
+			#sound-dai-cells = <0>;
+			dmas = <&dma2p 29>;
+			dma-names = "tx";
+		};
+
+		spdif_transmitter: spdif_transmitter {
+			compatible = "linux,spdif-dit";
+			#sound-dai-cells = <0>;
+		};	
+		
+		spdif_receiver: spdif_receiver {
+			compatible = "linux,spdif-dir";
+			#sound-dai-cells = <0>;
+		};
+		
+		pwmdac: pwmdac@10440000 {
+			compatible = "starfive,pwmdac";
+			reg = <0x0 0x10440000 0x0 0x1000>;
+			clocks = <&clkgen JH7100_CLK_AUDIO_ROOT>,
+				 <&clkgen JH7100_CLK_AUDIO_SRC>,
+				 <&clkgen JH7100_CLK_AUDIO_12288>,
+				 <&audioclk JH7100_CLK_DMA1P_AHB>,
+				 <&audioclk JH7100_CLK_APB_PWMDAC>,
+				 <&audioclk JH7100_CLK_DAC_MCLK>;
+			clock-names = "audio_root", "audio_src", "audio_12288", "dma1p_ahb", "pwmdac_apb", "dac_mclk";
+			resets = <&audrst JH7100_AUDRSTN_APB_BUS>,
+				<&audrst JH7100_AUDRSTN_DMA1P_AHB>,
+				<&audrst JH7100_AUDRSTN_APB_PWMDAC>;
+			reset-names = "apb_bus", "dma1p_ahb", "apb_pwmdac";
+			dmas = <&dma2p 23>;
+			dma-names = "tx";
+			#sound-dai-cells = <0>;
+		};
+		
+		pwmdac_codec: pwmdac-transmitter {
+			compatible = "linux,pwmdac-dit";
+			#sound-dai-cells = <0>;
+		};
+		
+		dmic_codec: dmic_codec { 
+			compatible = "dmic-codec";
+			#sound-dai-cells = <0>;
+		}; 
+
+		sound:snd-card{
+			compatible = "simple-audio-card";
+			simple-audio-card,name = "Starfive-Multi-Sound-Card";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			/* pwmdac */
+			simple-audio-card,dai-link@0 {
+				reg = <0>;
+				status = "okay";
+				format = "left_j";
+				bitclock-master = <&sndcpu0>;
+				frame-master = <&sndcpu0>;
+				
+				sndcpu0: cpu {
+					sound-dai = <&pwmdac>;
+				};
+
+				codec {
+					sound-dai = <&pwmdac_codec>;
+				};
+			};
+		};
 	};
 };

sound/soc/Kconfig

@@ -83,6 +83,7 @@ source "sound/soc/sh/Kconfig"
 source "sound/soc/sof/Kconfig"
 source "sound/soc/spear/Kconfig"
 source "sound/soc/sprd/Kconfig"
+source "sound/soc/starfive/Kconfig"
 source "sound/soc/sti/Kconfig"
 source "sound/soc/stm/Kconfig"
 source "sound/soc/sunxi/Kconfig"

sound/soc/Makefile

@@ -49,6 +49,7 @@ obj-$(CONFIG_SND_SOC)	+= pxa/
 obj-$(CONFIG_SND_SOC)	+= qcom/
 obj-$(CONFIG_SND_SOC)	+= rockchip/
 obj-$(CONFIG_SND_SOC)	+= samsung/
+obj-$(CONFIG_SND_SOC)	+= starfive/
 obj-$(CONFIG_SND_SOC)	+= sh/
 obj-$(CONFIG_SND_SOC)	+= sof/
 obj-$(CONFIG_SND_SOC)	+= spear/

sound/soc/starfive/Kconfig

@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2021 StarFive Technology Co., Ltd.
+
+config SND_STARFIVE_SPDIF
+	tristate "starfive spdif"
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	select REGMAP_MMIO
+	help
+	  Say Y or M if you want to add support for codecs attached to the
+	  I2S interface on VIC vic_starlight board. You will also need to select
+	  the drivers for the rest of VIC audio subsystem.
+
+config SND_STARFIVE_SPDIF_PCM
+	bool "PCM PIO extension for spdif driver"
+	depends on SND_STARFIVE_SPDIF
+	help
+	 Say Y or N if you want to add a custom ALSA extension that registers
+	 a PCM and uses PIO to transfer data.
+
+config SND_STARFIVE_PWMDAC
+	tristate "starfive pwmdac Device Driver"
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	 Say Y or M if you want to add support for sf pwmdac driver.
+
+config SND_STARFIVE_PWMDAC_PCM
+	bool "PCM PIO extension for pwmdac driver"
+	depends on SND_STARFIVE_PWMDAC
+	help
+	 Say Y or N if you want to add a custom ALSA extension that registers
+	 a PCM and uses PIO to transfer data.
+
+config SND_STARFIVE_PDM
+	tristate "starfive pdm Device Driver"
+	select REGMAP_MMIO
+	help
+	 Say Y or M if you want to add support for sf pdm driver.
+
+config SND_STARFIVE_I2SVAD
+	tristate "starfive I2SVAD Device Driver"
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	 Say Y or M if you want to add support for I2SVAD driver for
+	 starfive I2SVAD device.
+
+config SND_STARFIVE_I2SVAD_PCM
+	bool "PCM PIO extension for I2SVAD driver"
+	depends on SND_STARFIVE_I2SVAD
+	help
+	 Say Y or N if you want to add a custom ALSA extension that registers
+	 a PCM and uses PIO to transfer data.
+
+	 This functionality is specially suited for I2SVAD devices that don't have
+	 DMA support.
+

sound/soc/starfive/Makefile

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2021 StarFive Technology Co., Ltd.
+#
+obj-$(CONFIG_SND_STARFIVE_SPDIF) += spdif.o
+
+spdif-y := starfive_spdif.o
+spdif-$(CONFIG_SND_STARFIVE_SPDIF_PCM) += starfive_spdif_pcm.o
+
+obj-$(CONFIG_SND_STARFIVE_PWMDAC) += pwmdac.o
+
+pwmdac-y := starfive_pwmdac.o starfive_pwmdac_transmitter.o
+pwmdac-$(CONFIG_SND_STARFIVE_PWMDAC_PCM) += starfive_pwmdac_pcm.o
+
+obj-$(CONFIG_SND_STARFIVE_PDM) += starfive_pdm.o
+
+obj-$(CONFIG_SND_STARFIVE_I2SVAD) += i2svad.o
+i2svad-y := starfive_i2svad.o
+i2svad-$(CONFIG_SND_STARFIVE_I2SVAD_PCM) += starfive_i2svad_pcm.o