[linux-2.6-block.git] / sound / soc / qcom / lpass.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
 *
 * lpass.h - Definitions for the QTi LPASS
 */

#ifndef __LPASS_H__
#define __LPASS_H__

#include <linux/clk.h>
#include <linux/compiler.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>

#define LPASS_AHBIX_CLOCK_FREQUENCY		131072000
#define LPASS_MAX_MI2S_PORTS			(8)
#define LPASS_MAX_DMA_CHANNELS			(8)

/* Both the CPU DAI and platform drivers will access this data */
struct lpass_data {

	/* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */
	struct clk *ahbix_clk;

	/* MI2S system clock */
	struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS];

	/* MI2S bit clock (derived from system clock by a divider */
	struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS];

	/* low-power audio interface (LPAIF) registers */
	void __iomem *lpaif;

	/* regmap backed by the low-power audio interface (LPAIF) registers */
	struct regmap *lpaif_map;

	/* interrupts from the low-power audio interface (LPAIF) */
	int lpaif_irq;

	/* SOC specific variations in the LPASS IP integration */
	struct lpass_variant *variant;

	/* bit map to keep track of static channel allocations */
	unsigned long dma_ch_bit_map;

	/* used it for handling interrupt per dma channel */
	struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS];

	/* 8016 specific */
	struct clk *pcnoc_mport_clk;
	struct clk *pcnoc_sway_clk;

};

/* Vairant data per each SOC */
struct lpass_variant {
	u32	i2sctrl_reg_base;
	u32	i2sctrl_reg_stride;
	u32	i2s_ports;
	u32	irq_reg_base;
	u32	irq_reg_stride;
	u32	irq_ports;
	u32	rdma_reg_base;
	u32	rdma_reg_stride;
	u32	rdma_channels;
	u32	wrdma_reg_base;
	u32	wrdma_reg_stride;
	u32	wrdma_channels;

	/**
	 * on SOCs like APQ8016 the channel control bits start
	 * at different offset to ipq806x
	 **/
	u32	dmactl_audif_start;
	u32	wrdma_channel_start;
	/* SOC specific initialization like clocks */
	int (*init)(struct platform_device *pdev);
	int (*exit)(struct platform_device *pdev);
	int (*alloc_dma_channel)(struct lpass_data *data, int direction);
	int (*free_dma_channel)(struct lpass_data *data, int ch);

	/* SOC specific dais */
	struct snd_soc_dai_driver *dai_driver;
	int num_dai;
	const char * const *dai_osr_clk_names;
	const char * const *dai_bit_clk_names;
};

/* register the platform driver from the CPU DAI driver */
int asoc_qcom_lpass_platform_register(struct platform_device *);
int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev);
int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev);
int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai);
extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops;

#endif /* __LPASS_H__ */
Commit	Line	Data
97fb5e8d	1	/* SPDX-License-Identifier: GPL-2.0-only */
cd59f138 KW	2	/*
	3	* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
	4	*
cd59f138 KW	5	* lpass.h - Definitions for the QTi LPASS
	6	*/
	7
	8	#ifndef __LPASS_H__
	9	#define __LPASS_H__
	10
	11	#include <linux/clk.h>
	12	#include <linux/compiler.h>
	13	#include <linux/platform_device.h>
	14	#include <linux/regmap.h>
	15
	16	#define LPASS_AHBIX_CLOCK_FREQUENCY 131072000
9a127cff	17	#define LPASS_MAX_MI2S_PORTS (8)
4f629e4b	18	#define LPASS_MAX_DMA_CHANNELS (8)
cd59f138 KW	19
	20	/* Both the CPU DAI and platform drivers will access this data */
	21	struct lpass_data {
	22
	23	/* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */
	24	struct clk *ahbix_clk;
	25
	26	/* MI2S system clock */
9a127cff	27	struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS];
cd59f138 KW	28
cd59f138 KW	29	/* MI2S bit clock (derived from system clock by a divider */
9a127cff	30	struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS];
cd59f138 KW	31
	32	/* low-power audio interface (LPAIF) registers */
	33	void __iomem *lpaif;
	34
	35	/* regmap backed by the low-power audio interface (LPAIF) registers */
	36	struct regmap *lpaif_map;
	37
	38	/* interrupts from the low-power audio interface (LPAIF) */
	39	int lpaif_irq;
9bae4880 SK	40
	41	/* SOC specific variations in the LPASS IP integration */
	42	struct lpass_variant *variant;
4f629e4b	43
89cdfa06	44	/* bit map to keep track of static channel allocations */
4d809fb1	45	unsigned long dma_ch_bit_map;
89cdfa06	46
4f629e4b SK	47	/* used it for handling interrupt per dma channel */
4f629e4b SK	48	struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS];
dc1ebd18 SK	49
	50	/* 8016 specific */
	51	struct clk *pcnoc_mport_clk;
	52	struct clk *pcnoc_sway_clk;
6adcbdcd	53
9bae4880 SK	54	};
	55
	56	/* Vairant data per each SOC */
	57	struct lpass_variant {
	58	u32 i2sctrl_reg_base;
	59	u32 i2sctrl_reg_stride;
	60	u32 i2s_ports;
	61	u32 irq_reg_base;
	62	u32 irq_reg_stride;
	63	u32 irq_ports;
	64	u32 rdma_reg_base;
	65	u32 rdma_reg_stride;
	66	u32 rdma_channels;
ffc1325e SK	67	u32 wrdma_reg_base;
	68	u32 wrdma_reg_stride;
	69	u32 wrdma_channels;
9bae4880	70
0054055c SK	71	/**
	72	* on SOCs like APQ8016 the channel control bits start
	73	* at different offset to ipq806x
	74	**/
ec5b8287	75	u32 dmactl_audif_start;
ffc1325e	76	u32 wrdma_channel_start;
183b8021	77	/* SOC specific initialization like clocks */
9bae4880 SK	78	int (init)(struct platform_device pdev);
9bae4880 SK	79	int (exit)(struct platform_device pdev);
73c847b6	80	int (alloc_dma_channel)(struct lpass_data data, int direction);
6db1c6ba	81	int (free_dma_channel)(struct lpass_data data, int ch);
9bae4880 SK	82
	83	/* SOC specific dais */
	84	struct snd_soc_dai_driver *dai_driver;
	85	int num_dai;
97c52eb9 LW	86	const char * const *dai_osr_clk_names;
97c52eb9 LW	87	const char * const *dai_bit_clk_names;
cd59f138 KW	88	};
	89
	90	/* register the platform driver from the CPU DAI driver */
	91	int asoc_qcom_lpass_platform_register(struct platform_device *);
9bae4880 SK	92	int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev);
	93	int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev);
	94	int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai);
618718dc	95	extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops;
cd59f138 KW	96
cd59f138 KW	97	#endif /* __LPASS_H__ */