[deliverable/linux.git] / sound / soc / qcom / lpass.h

/*
 * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * 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)

/* 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;
};

/* 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;

	/* SOC specific intialization like clocks */
	int (*init)(struct platform_device *pdev);
	int (*exit)(struct platform_device *pdev);
	int (*alloc_dma_channel)(struct lpass_data *data);
	int (*free_dma_channel)(struct lpass_data *data, int ch);

	/* SOC specific dais */
	struct snd_soc_dai_driver *dai_driver;
	int num_dai;
};

/* 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 struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops;

#endif /* __LPASS_H__ */
Commit	Line	Data
cd59f138 KW	1	/*
	2	* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 and
	6	* only version 2 as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* lpass.h - Definitions for the QTi LPASS
	14	*/
	15
	16	#ifndef __LPASS_H__
	17	#define __LPASS_H__
	18
	19	#include <linux/clk.h>
	20	#include <linux/compiler.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/regmap.h>
	23
	24	#define LPASS_AHBIX_CLOCK_FREQUENCY 131072000
9a127cff	25	#define LPASS_MAX_MI2S_PORTS (8)
cd59f138 KW	26
	27	/* Both the CPU DAI and platform drivers will access this data */
	28	struct lpass_data {
	29
	30	/* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */
	31	struct clk *ahbix_clk;
	32
	33	/* MI2S system clock */
9a127cff	34	struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS];
cd59f138 KW	35
cd59f138 KW	36	/* MI2S bit clock (derived from system clock by a divider */
9a127cff	37	struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS];
cd59f138 KW	38
	39	/* low-power audio interface (LPAIF) registers */
	40	void __iomem *lpaif;
	41
	42	/* regmap backed by the low-power audio interface (LPAIF) registers */
	43	struct regmap *lpaif_map;
	44
	45	/* interrupts from the low-power audio interface (LPAIF) */
	46	int lpaif_irq;
9bae4880 SK	47
	48	/* SOC specific variations in the LPASS IP integration */
	49	struct lpass_variant *variant;
	50	};
	51
	52	/* Vairant data per each SOC */
	53	struct lpass_variant {
	54	u32 i2sctrl_reg_base;
	55	u32 i2sctrl_reg_stride;
	56	u32 i2s_ports;
	57	u32 irq_reg_base;
	58	u32 irq_reg_stride;
	59	u32 irq_ports;
	60	u32 rdma_reg_base;
	61	u32 rdma_reg_stride;
	62	u32 rdma_channels;
	63
	64	/* SOC specific intialization like clocks */
	65	int (init)(struct platform_device pdev);
	66	int (exit)(struct platform_device pdev);
6db1c6ba SK	67	int (alloc_dma_channel)(struct lpass_data data);
6db1c6ba SK	68	int (free_dma_channel)(struct lpass_data data, int ch);
9bae4880 SK	69
	70	/* SOC specific dais */
	71	struct snd_soc_dai_driver *dai_driver;
	72	int num_dai;
cd59f138 KW	73	};
	74
	75	/* register the platform driver from the CPU DAI driver */
	76	int asoc_qcom_lpass_platform_register(struct platform_device *);
9bae4880 SK	77	int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev);
	78	int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev);
	79	int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai);
	80	extern struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops;
cd59f138 KW	81
cd59f138 KW	82	#endif /* __LPASS_H__ */