xref: /openbmc/linux/sound/soc/bcm/bcm63xx-i2s.h (revision 03ab8e6297acd1bc0eedaa050e2a1635c576fd11)

// SPDX-License-Identifier: GPL-2.0-or-later
// linux/sound/soc/bcm/bcm63xx-i2s.h
// Copyright (c) 2020 Broadcom Corporation
// Author: Kevin-Ke Li <kevin-ke.li@broadcom.com>

#ifndef __BCM63XX_I2S_H
#define __BCM63XX_I2S_H

#define I2S_DESC_FIFO_DEPTH		8
#define I2S_MISC_CFG			(0x003C)
#define I2S_PAD_LVL_LOOP_DIS_MASK	(1 << 2)
#define I2S_PAD_LVL_LOOP_DIS_ENABLE	I2S_PAD_LVL_LOOP_DIS_MASK

#define I2S_TX_ENABLE_MASK		(1 << 31)
#define I2S_TX_ENABLE			I2S_TX_ENABLE_MASK
#define I2S_TX_OUT_R			(1 << 19)
#define I2S_TX_DATA_ALIGNMENT		(1 << 2)
#define I2S_TX_DATA_ENABLE		(1 << 1)
#define I2S_TX_CLOCK_ENABLE		(1 << 0)

#define I2S_TX_DESC_OFF_LEVEL_SHIFT	12
#define I2S_TX_DESC_OFF_LEVEL_MASK	(0x0F << I2S_TX_DESC_OFF_LEVEL_SHIFT)
#define I2S_TX_DESC_IFF_LEVEL_SHIFT	8
#define I2S_TX_DESC_IFF_LEVEL_MASK	(0x0F << I2S_TX_DESC_IFF_LEVEL_SHIFT)
#define I2S_TX_DESC_OFF_INTR_EN_MSK	(1 << 1)
#define I2S_TX_DESC_OFF_INTR_EN	I2S_TX_DESC_OFF_INTR_EN_MSK

#define I2S_TX_CFG			(0x0000)
#define I2S_TX_IRQ_CTL			(0x0004)
#define I2S_TX_IRQ_EN			(0x0008)
#define I2S_TX_IRQ_IFF_THLD		(0x000c)
#define I2S_TX_IRQ_OFF_THLD		(0x0010)
#define I2S_TX_DESC_IFF_ADDR		(0x0014)
#define I2S_TX_DESC_IFF_LEN		(0x0018)
#define I2S_TX_DESC_OFF_ADDR		(0x001C)
#define I2S_TX_DESC_OFF_LEN		(0x0020)
#define I2S_TX_CFG_2			(0x0024)
#define I2S_TX_SLAVE_MODE_SHIFT	13
#define I2S_TX_SLAVE_MODE_MASK		(1 << I2S_TX_SLAVE_MODE_SHIFT)
#define I2S_TX_SLAVE_MODE		I2S_TX_SLAVE_MODE_MASK
#define I2S_TX_MASTER_MODE		0
#define I2S_TX_INTR_MASK		0x0F

#define I2S_RX_ENABLE_MASK		(1 << 31)
#define I2S_RX_ENABLE			I2S_RX_ENABLE_MASK
#define I2S_RX_IN_R			(1 << 19)
#define I2S_RX_DATA_ALIGNMENT		(1 << 2)
#define I2S_RX_CLOCK_ENABLE		(1 << 0)

#define I2S_RX_DESC_OFF_LEVEL_SHIFT	12
#define I2S_RX_DESC_OFF_LEVEL_MASK	(0x0F << I2S_RX_DESC_OFF_LEVEL_SHIFT)
#define I2S_RX_DESC_IFF_LEVEL_SHIFT	8
#define I2S_RX_DESC_IFF_LEVEL_MASK	(0x0F << I2S_RX_DESC_IFF_LEVEL_SHIFT)
#define I2S_RX_DESC_OFF_INTR_EN_MSK	(1 << 1)
#define I2S_RX_DESC_OFF_INTR_EN	I2S_RX_DESC_OFF_INTR_EN_MSK

#define I2S_RX_CFG			(0x0040) /* 20c0 */
#define I2S_RX_IRQ_CTL			(0x0044)
#define I2S_RX_IRQ_EN			(0x0048)
#define I2S_RX_IRQ_IFF_THLD		(0x004C)
#define I2S_RX_IRQ_OFF_THLD		(0x0050)
#define I2S_RX_DESC_IFF_ADDR		(0x0054)
#define I2S_RX_DESC_IFF_LEN		(0x0058)
#define I2S_RX_DESC_OFF_ADDR		(0x005C)
#define I2S_RX_DESC_OFF_LEN		(0x0060)
#define I2S_RX_CFG_2			(0x0064)
#define I2S_RX_SLAVE_MODE_SHIFT	13
#define I2S_RX_SLAVE_MODE_MASK		(1 << I2S_RX_SLAVE_MODE_SHIFT)
#define I2S_RX_SLAVE_MODE		I2S_RX_SLAVE_MODE_MASK
#define I2S_RX_MASTER_MODE		0
#define I2S_RX_INTR_MASK		0x0F

#define I2S_REG_MAX			0x007C

struct bcm_i2s_priv {
	struct device *dev;
	struct regmap *regmap_i2s;
	struct clk *i2s_clk;
	struct snd_pcm_substream	*play_substream;
	struct snd_pcm_substream	*capture_substream;
	struct i2s_dma_desc *play_dma_desc;
	struct i2s_dma_desc *capture_dma_desc;
};

extern int bcm63xx_soc_platform_probe(struct platform_device *pdev,
				      struct bcm_i2s_priv *i2s_priv);
extern int bcm63xx_soc_platform_remove(struct platform_device *pdev);

#endif