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/*
* 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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