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/* 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)
struct lpaif_i2sctl {
struct regmap_field *loopback;
struct regmap_field *spken;
struct regmap_field *spkmode;
struct regmap_field *spkmono;
struct regmap_field *micen;
struct regmap_field *micmode;
struct regmap_field *micmono;
struct regmap_field *wssrc;
struct regmap_field *bitwidth;
};
struct lpaif_dmactl {
struct regmap_field *bursten;
struct regmap_field *wpscnt;
struct regmap_field *intf;
struct regmap_field *fifowm;
struct regmap_field *enable;
struct regmap_field *dyncclk;
};
/* 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];
/* MI2S SD lines to use for playback/capture */
unsigned int mi2s_playback_sd_mode[LPASS_MAX_MI2S_PORTS];
unsigned int mi2s_capture_sd_mode[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];
/* SOC specific clock list */
struct clk_bulk_data *clks;
int num_clks;
/* Regmap fields of I2SCTL & DMACTL registers bitfields */
struct lpaif_i2sctl *i2sctl;
struct lpaif_dmactl *rd_dmactl;
struct lpaif_dmactl *wr_dmactl;
};
/* 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;
/* I2SCTL Register fields */
struct reg_field loopback;
struct reg_field spken;
struct reg_field spkmode;
struct reg_field spkmono;
struct reg_field micen;
struct reg_field micmode;
struct reg_field micmono;
struct reg_field wssrc;
struct reg_field bitwidth;
/* RD_DMA Register fields */
struct reg_field rdma_bursten;
struct reg_field rdma_wpscnt;
struct reg_field rdma_intf;
struct reg_field rdma_fifowm;
struct reg_field rdma_enable;
struct reg_field rdma_dyncclk;
/* WR_DMA Register fields */
struct reg_field wrdma_bursten;
struct reg_field wrdma_wpscnt;
struct reg_field wrdma_intf;
struct reg_field wrdma_fifowm;
struct reg_field wrdma_enable;
struct reg_field wrdma_dyncclk;
/**
* 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;
/* SOC specific clocks configuration */
const char **clk_name;
int num_clks;
};
/* 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__ */
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