ASoC: starfive: Add StarFive JH7100 audio drivers

Signed-off-by: Michael Yan <[email protected]> Signed-off-by: Jenny Zhang <[email protected]> Signed-off-by: Walker Chen <[email protected]> Signed-off-by: Emil Renner Berthing <[email protected]>
lftan · Dec 27, 2021 · ebcaa4f · ebcaa4f
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diff --git a/sound/soc/Kconfig b/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"

diff --git a/sound/soc/Makefile b/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/

diff --git a/sound/soc/starfive/Kconfig b/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.
+
diff --git a/sound/soc/starfive/Makefile b/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
diff --git a/sound/soc/starfive/pwmdac.h b/sound/soc/starfive/pwmdac.h
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 StarFive Technology Co., Ltd.
+ */
+#ifndef __STARFIVE_PWMDAC_LOCAL_H
+#define __STARFIVE_PWMDAC_LOCAL_H
+
+#include <linux/clk.h>
+#include <linux/reset.h>
+#include <linux/device.h>
+#include <linux/types.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/pcm.h>
+
+#define PWMDAC_WDATA	0		///PWMDAC_BASE_ADDR
+#define PWMDAC_CTRL		0x04	///PWMDAC_BASE_ADDR + 0x04
+#define PWMDAC_SATAE	0x08	///PWMDAC_BASE_ADDR + 0x08
+#define PWMDAC_RESERVED	0x0C	///PWMDAC_BASE_ADDR + 0x0C
+
+#define SFC_PWMDAC_SHIFT		BIT(1)
+#define SFC_PWMDAC_DUTY_CYCLE	BIT(2)
+#define SFC_PWMDAC_CNT_N		BIT(4)
+
+#define SFC_PWMDAC_LEFT_RIGHT_DATA_CHANGE	BIT(13)
+#define SFC_PWMDAC_DATA_MODE	BIT(14)
+
+#define FIFO_UN_FULL	0
+#define FIFO_FULL	1
+
+enum pwmdac_lr_change{
+	NO_CHANGE = 0,
+	CHANGE,
+};
+
+enum pwmdac_d_mode{
+	UNSINGED_DATA = 0,
+	INVERTER_DATA_MSB,
+};
+
+enum pwmdac_shift_bit{
+	PWMDAC_SHIFT_8 = 8,		/*pwmdac shift 8 bit*/
+	PWMDAC_SHIFT_10 = 10,	/*pwmdac shift 10 bit*/
+};
+
+enum pwmdac_duty_cycle{
+	PWMDAC_CYCLE_LEFT = 0,		/*pwmdac duty cycle left*/
+	PWMDAC_CYCLE_RIGHT = 1,		/*pwmdac duty cycle right*/
+	PWMDAC_CYCLE_CENTER = 2,	/*pwmdac duty cycle center*/
+};
+
+/*sample count [12:4] <511*/
+enum pwmdac_sample_count{
+	PWMDAC_SAMPLE_CNT_1 = 1,
+	PWMDAC_SAMPLE_CNT_2,
+	PWMDAC_SAMPLE_CNT_3,
+	PWMDAC_SAMPLE_CNT_4,
+	PWMDAC_SAMPLE_CNT_5,
+	PWMDAC_SAMPLE_CNT_6,
+	PWMDAC_SAMPLE_CNT_7,
+	PWMDAC_SAMPLE_CNT_8 = 1,	//(32.468/8) == (12.288/3) == 4.096
+	PWMDAC_SAMPLE_CNT_9,
+	PWMDAC_SAMPLE_CNT_10,
+	PWMDAC_SAMPLE_CNT_11,
+	PWMDAC_SAMPLE_CNT_12,
+	PWMDAC_SAMPLE_CNT_13,
+	PWMDAC_SAMPLE_CNT_14,
+	PWMDAC_SAMPLE_CNT_15,
+	PWMDAC_SAMPLE_CNT_16,
+	PWMDAC_SAMPLE_CNT_17,
+	PWMDAC_SAMPLE_CNT_18,
+	PWMDAC_SAMPLE_CNT_19,
+	PWMDAC_SAMPLE_CNT_20 = 20,
+	PWMDAC_SAMPLE_CNT_30 = 30,
+	PWMDAC_SAMPLE_CNT_511 = 511,
+};
+
+
+enum data_shift{
+	PWMDAC_DATA_LEFT_SHIFT_BIT_0 = 0,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_1,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_2,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_3,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_4,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_5,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_6,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_7,
+	PWMDAC_DATA_LEFT_SHIFT_BIT_ALL,
+};
+
+enum pwmdac_config_list{
+	shift_8Bit_unsigned = 0,
+	shift_8Bit_unsigned_dataShift,
+	shift_10Bit_unsigned,
+	shift_10Bit_unsigned_dataShift,
+
+	shift_8Bit_inverter,
+	shift_8Bit_inverter_dataShift,
+	shift_10Bit_inverter,
+	shift_10Bit_inverter_dataShift,
+};
+
+struct sf_pwmdac_dev {
+	void __iomem *pwmdac_base;
+	resource_size_t	mapbase;
+	u8  mode;
+	u8 shift_bit;
+	u8 duty_cycle;
+	u8 datan;
+	u8 data_mode;
+	u8 lr_change;
+	u8 shift;
+	u8 fifo_th;
+	bool use_pio;
+	spinlock_t lock;
+	int active;
+
+	struct clk *clk_audio_root;
+	struct clk *clk_audio_src;
+	struct clk *clk_audio_12288;
+	struct clk *clk_dma1p_ahb;
+	struct clk *clk_pwmdac_apb;
+	struct clk *clk_dac_mclk;
+	struct reset_control *rst_apb_bus;
+	struct reset_control *rst_dma1p_ahb;
+	struct reset_control *rst_apb_pwmdac;
+
+	struct device *dev;
+	struct snd_dmaengine_dai_dma_data play_dma_data;
+	struct snd_pcm_substream __rcu *tx_substream;
+	unsigned int (*tx_fn)(struct sf_pwmdac_dev *dev,
+			struct snd_pcm_runtime *runtime, unsigned int tx_ptr,
+			bool *period_elapsed);
+	unsigned int tx_ptr;
+	struct task_struct *tx_thread;
+	bool tx_thread_exit;
+};
+
+
+
+#if IS_ENABLED(CONFIG_SND_STARFIVE_PWMDAC_PCM)
+void sf_pwmdac_pcm_push_tx(struct sf_pwmdac_dev *dev);
+void sf_pwmdac_pcm_pop_rx(struct sf_pwmdac_dev *dev);
+int sf_pwmdac_pcm_register(struct platform_device *pdev);
+#else
+void sf_pwmdac_pcm_push_tx(struct sf_pwmdac_dev *dev) { }
+void sf_pwmdac_pcm_pop_rx(struct sf_pwmdac_dev *dev) { }
+int sf_pwmdac_pcm_register(struct platform_device *pdev)
+{
+	return -EINVAL;
+}
+#endif
+
+#endif