Release 4.17 sound/soc/intel/skylake/skl-ssp-clk.h

/*
 *  skl-ssp-clk.h - Skylake ssp clock information and ipc structure
 *
 *  Copyright (C) 2017 Intel Corp
 *  Author: Jaikrishna Nemallapudi <jaikrishnax.nemallapudi@intel.com>
 *  Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License.
 *
 *  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.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 */

#ifndef SOUND_SOC_SKL_SSP_CLK_H

#define SOUND_SOC_SKL_SSP_CLK_H


#define SKL_MAX_SSP		6
/* xtal/cardinal/pll, parent of ssp clocks and mclk */

#define SKL_MAX_CLK_SRC		3

#define SKL_MAX_SSP_CLK_TYPES	3 
/* mclk, sclk, sclkfs */


#define SKL_MAX_CLK_CNT		(SKL_MAX_SSP * SKL_MAX_SSP_CLK_TYPES)

/* Max number of configurations supported for each clock */

#define SKL_MAX_CLK_RATES	10


#define SKL_SCLK_OFS		SKL_MAX_SSP

#define SKL_SCLKFS_OFS		(SKL_SCLK_OFS + SKL_MAX_SSP)


enum skl_clk_type {
	
SKL_MCLK,
	
SKL_SCLK,
	
SKL_SCLK_FS,
};


enum skl_clk_src_type {
	
SKL_XTAL,
	
SKL_CARDINAL,
	
SKL_PLL,
};


struct skl_clk_parent_src {
	
u8 clk_id;
	
const char *name;
	
unsigned long rate;
	
const char *parent_name;
};


struct skl_tlv_hdr {
	
u32 type;
	
u32 size;
};


struct skl_dmactrl_mclk_cfg {
	
struct skl_tlv_hdr hdr;
	/* DMA Clk TLV params */
	
u32 clk_warm_up:16;
	
u32 mclk:1;
	
u32 warm_up_over:1;
	
u32 rsvd0:14;
	
u32 clk_stop_delay:16;
	
u32 keep_running:1;
	
u32 clk_stop_over:1;
	
u32 rsvd1:14;
};


struct skl_dmactrl_sclkfs_cfg {
	
struct skl_tlv_hdr hdr;
	/* DMA SClk&FS  TLV params */
	
u32 sampling_frequency;
	
u32 bit_depth;
	
u32 channel_map;
	
u32 channel_config;
	
u32 interleaving_style;
	
u32 number_of_channels : 8;
	
u32 valid_bit_depth : 8;
	
u32 sample_type : 8;
	
u32 reserved : 8;
};


union skl_clk_ctrl_ipc {
	
struct skl_dmactrl_mclk_cfg mclk;
	
struct skl_dmactrl_sclkfs_cfg sclk_fs;
};


struct skl_clk_rate_cfg_table {
	
unsigned long rate;
	
union skl_clk_ctrl_ipc dma_ctl_ipc;
	
void *config;
};

/*
 * rate for mclk will be in rates[0]. For sclk and sclkfs, rates[] store
 * all possible clocks ssp can generate for that platform.
 */

struct skl_ssp_clk {
	
const char *name;
	
const char *parent_name;
	
struct skl_clk_rate_cfg_table rate_cfg[SKL_MAX_CLK_RATES];
};


struct skl_clk_pdata {
	
struct skl_clk_parent_src *parent_clks;
	
int num_clks;
	
struct skl_ssp_clk *ssp_clks;
	
void *pvt_data;
};

#endif /* SOUND_SOC_SKL_SSP_CLK_H */
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Directory: sound/soc/intel/skylake

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