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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/soc/bcm/bcm63xx-i2s.h
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// SPDX-License-Identifier: GPL-2.0-or-later

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// linux/sound/soc/bcm/bcm63xx-i2s.h

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// Copyright (c) 2020 Broadcom Corporation

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// Author: Kevin-Ke Li <[email protected]>

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#ifndef __BCM63XX_I2S_H

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#define __BCM63XX_I2S_H

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#define I2S_DESC_FIFO_DEPTH		8

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#define I2S_MISC_CFG			(0x003C)

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#define I2S_PAD_LVL_LOOP_DIS_MASK	(1 << 2)

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#define I2S_PAD_LVL_LOOP_DIS_ENABLE	I2S_PAD_LVL_LOOP_DIS_MASK

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#define I2S_TX_ENABLE_MASK		(1 << 31)

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#define I2S_TX_ENABLE			I2S_TX_ENABLE_MASK

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#define I2S_TX_OUT_R			(1 << 19)

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#define I2S_TX_DATA_ALIGNMENT		(1 << 2)

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#define I2S_TX_DATA_ENABLE		(1 << 1)

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#define I2S_TX_CLOCK_ENABLE		(1 << 0)

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#define I2S_TX_DESC_OFF_LEVEL_SHIFT	12

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#define I2S_TX_DESC_OFF_LEVEL_MASK	(0x0F << I2S_TX_DESC_OFF_LEVEL_SHIFT)

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#define I2S_TX_DESC_IFF_LEVEL_SHIFT	8

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#define I2S_TX_DESC_IFF_LEVEL_MASK	(0x0F << I2S_TX_DESC_IFF_LEVEL_SHIFT)

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#define I2S_TX_DESC_OFF_INTR_EN_MSK	(1 << 1)

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#define I2S_TX_DESC_OFF_INTR_EN	I2S_TX_DESC_OFF_INTR_EN_MSK

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#define I2S_TX_CFG			(0x0000)

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#define I2S_TX_IRQ_CTL			(0x0004)

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#define I2S_TX_IRQ_EN			(0x0008)

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#define I2S_TX_IRQ_IFF_THLD		(0x000c)

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#define I2S_TX_IRQ_OFF_THLD		(0x0010)

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#define I2S_TX_DESC_IFF_ADDR		(0x0014)

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#define I2S_TX_DESC_IFF_LEN		(0x0018)

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#define I2S_TX_DESC_OFF_ADDR		(0x001C)

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#define I2S_TX_DESC_OFF_LEN		(0x0020)

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#define I2S_TX_CFG_2			(0x0024)

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#define I2S_TX_SLAVE_MODE_SHIFT	13

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#define I2S_TX_SLAVE_MODE_MASK		(1 << I2S_TX_SLAVE_MODE_SHIFT)

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#define I2S_TX_SLAVE_MODE		I2S_TX_SLAVE_MODE_MASK

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#define I2S_TX_MASTER_MODE		0

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#define I2S_TX_INTR_MASK		0x0F

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#define I2S_RX_ENABLE_MASK		(1 << 31)

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#define I2S_RX_ENABLE			I2S_RX_ENABLE_MASK

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#define I2S_RX_IN_R			(1 << 19)

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#define I2S_RX_DATA_ALIGNMENT		(1 << 2)

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#define I2S_RX_CLOCK_ENABLE		(1 << 0)

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#define I2S_RX_DESC_OFF_LEVEL_SHIFT	12

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#define I2S_RX_DESC_OFF_LEVEL_MASK	(0x0F << I2S_RX_DESC_OFF_LEVEL_SHIFT)

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#define I2S_RX_DESC_IFF_LEVEL_SHIFT	8

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#define I2S_RX_DESC_IFF_LEVEL_MASK	(0x0F << I2S_RX_DESC_IFF_LEVEL_SHIFT)

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#define I2S_RX_DESC_OFF_INTR_EN_MSK	(1 << 1)

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#define I2S_RX_DESC_OFF_INTR_EN	I2S_RX_DESC_OFF_INTR_EN_MSK

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#define I2S_RX_CFG			(0x0040) /* 20c0 */

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#define I2S_RX_IRQ_CTL			(0x0044)

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#define I2S_RX_IRQ_EN			(0x0048)

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#define I2S_RX_IRQ_IFF_THLD		(0x004C)

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#define I2S_RX_IRQ_OFF_THLD		(0x0050)

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#define I2S_RX_DESC_IFF_ADDR		(0x0054)

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#define I2S_RX_DESC_IFF_LEN		(0x0058)

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#define I2S_RX_DESC_OFF_ADDR		(0x005C)

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#define I2S_RX_DESC_OFF_LEN		(0x0060)

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#define I2S_RX_CFG_2			(0x0064)

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#define I2S_RX_SLAVE_MODE_SHIFT	13

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#define I2S_RX_SLAVE_MODE_MASK		(1 << I2S_RX_SLAVE_MODE_SHIFT)

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#define I2S_RX_SLAVE_MODE		I2S_RX_SLAVE_MODE_MASK

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#define I2S_RX_MASTER_MODE		0

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#define I2S_RX_INTR_MASK		0x0F

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#define I2S_REG_MAX			0x007C

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struct bcm_i2s_priv {

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	struct device *dev;

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	struct regmap *regmap_i2s;

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	struct clk *i2s_clk;

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	struct snd_pcm_substream	*play_substream;

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	struct snd_pcm_substream	*capture_substream;

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	struct i2s_dma_desc *play_dma_desc;

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	struct i2s_dma_desc *capture_dma_desc;

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};

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extern int bcm63xx_soc_platform_probe(struct platform_device *pdev,

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				      struct bcm_i2s_priv *i2s_priv);

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extern int bcm63xx_soc_platform_remove(struct platform_device *pdev);

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#endif

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