1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * skl-i2s.h - i2s blob mapping 4 * 5 * Copyright (C) 2017 Intel Corp 6 * Author: Subhransu S. Prusty < subhransu.s.prusty@intel.com> 7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8 * 9 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 10 */ 11 12 #ifndef __SOUND_SOC_SKL_I2S_H 13 #define __SOUND_SOC_SKL_I2S_H 14 15 #define SKL_I2S_MAX_TIME_SLOTS 8 16 #define SKL_MCLK_DIV_CLK_SRC_MASK GENMASK(17, 16) 17 18 #define SKL_MNDSS_DIV_CLK_SRC_MASK GENMASK(21, 20) 19 #define SKL_SHIFT(x) (ffs(x) - 1) 20 #define SKL_MCLK_DIV_RATIO_MASK GENMASK(11, 0) 21 22 #define is_legacy_blob(x) (x.signature != 0xEE) 23 #define ext_to_legacy_blob(i2s_config_blob_ext) \ 24 ((struct skl_i2s_config_blob_legacy *) i2s_config_blob_ext) 25 26 #define get_clk_src(mclk, mask) \ 27 ((mclk.mdivctrl & mask) >> SKL_SHIFT(mask)) 28 struct skl_i2s_config { 29 u32 ssc0; 30 u32 ssc1; 31 u32 sscto; 32 u32 sspsp; 33 u32 sstsa; 34 u32 ssrsa; 35 u32 ssc2; 36 u32 sspsp2; 37 u32 ssc3; 38 u32 ssioc; 39 } __packed; 40 41 struct skl_i2s_config_mclk { 42 u32 mdivctrl; 43 u32 mdivr; 44 }; 45 46 struct skl_i2s_config_mclk_ext { 47 u32 mdivctrl; 48 u32 mdivr_count; 49 u32 mdivr[0]; 50 } __packed; 51 52 struct skl_i2s_config_blob_signature { 53 u32 minor_ver : 8; 54 u32 major_ver : 8; 55 u32 resvdz : 8; 56 u32 signature : 8; 57 } __packed; 58 59 struct skl_i2s_config_blob_header { 60 struct skl_i2s_config_blob_signature sig; 61 u32 size; 62 }; 63 64 /** 65 * struct skl_i2s_config_blob_legacy - Structure defines I2S Gateway 66 * configuration legacy blob 67 * 68 * @gtw_attr: Gateway attribute for the I2S Gateway 69 * @tdm_ts_group: TDM slot mapping against channels in the Gateway. 70 * @i2s_cfg: I2S HW registers 71 * @mclk: MCLK clock source and divider values 72 */ 73 struct skl_i2s_config_blob_legacy { 74 u32 gtw_attr; 75 u32 tdm_ts_group[SKL_I2S_MAX_TIME_SLOTS]; 76 struct skl_i2s_config i2s_cfg; 77 struct skl_i2s_config_mclk mclk; 78 }; 79 80 struct skl_i2s_config_blob_ext { 81 u32 gtw_attr; 82 struct skl_i2s_config_blob_header hdr; 83 u32 tdm_ts_group[SKL_I2S_MAX_TIME_SLOTS]; 84 struct skl_i2s_config i2s_cfg; 85 struct skl_i2s_config_mclk_ext mclk; 86 } __packed; 87 #endif /* __SOUND_SOC_SKL_I2S_H */ 88