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Extended I2S config blob supports multiple mclk dividers in NHLT blob. This patch detects whether the I2S blob is legacy or extended based on the signature value and chooses the mclk source and divider accordingly. Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* skl-i2s.h - i2s blob mapping
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*
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* Copyright (C) 2017 Intel Corp
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* Author: Subhransu S. Prusty < subhransu.s.prusty@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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*/
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#ifndef __SOUND_SOC_SKL_I2S_H
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#define __SOUND_SOC_SKL_I2S_H
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#define SKL_I2S_MAX_TIME_SLOTS 8
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#define SKL_MCLK_DIV_CLK_SRC_MASK GENMASK(17, 16)
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#define SKL_MNDSS_DIV_CLK_SRC_MASK GENMASK(21, 20)
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#define SKL_SHIFT(x) (ffs(x) - 1)
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#define SKL_MCLK_DIV_RATIO_MASK GENMASK(11, 0)
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#define is_legacy_blob(x) (x.signature != 0xEE)
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#define ext_to_legacy_blob(i2s_config_blob_ext) \
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((struct skl_i2s_config_blob_legacy *) i2s_config_blob_ext)
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#define get_clk_src(mclk, mask) \
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((mclk.mdivctrl & mask) >> SKL_SHIFT(mask))
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struct skl_i2s_config {
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u32 ssc0;
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u32 ssc1;
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u32 sscto;
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u32 sspsp;
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u32 sstsa;
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u32 ssrsa;
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u32 ssc2;
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u32 sspsp2;
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u32 ssc3;
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u32 ssioc;
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} __packed;
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struct skl_i2s_config_mclk {
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u32 mdivctrl;
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u32 mdivr;
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};
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struct skl_i2s_config_mclk_ext {
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u32 mdivctrl;
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u32 mdivr_count;
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u32 mdivr[0];
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} __packed;
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struct skl_i2s_config_blob_signature {
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u32 minor_ver : 8;
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u32 major_ver : 8;
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u32 resvdz : 8;
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u32 signature : 8;
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} __packed;
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struct skl_i2s_config_blob_header {
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struct skl_i2s_config_blob_signature sig;
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u32 size;
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};
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/**
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* struct skl_i2s_config_blob_legacy - Structure defines I2S Gateway
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* configuration legacy blob
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*
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* @gtw_attr: Gateway attribute for the I2S Gateway
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* @tdm_ts_group: TDM slot mapping against channels in the Gateway.
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* @i2s_cfg: I2S HW registers
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* @mclk: MCLK clock source and divider values
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*/
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struct skl_i2s_config_blob_legacy {
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u32 gtw_attr;
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u32 tdm_ts_group[SKL_I2S_MAX_TIME_SLOTS];
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struct skl_i2s_config i2s_cfg;
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struct skl_i2s_config_mclk mclk;
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};
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struct skl_i2s_config_blob_ext {
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u32 gtw_attr;
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struct skl_i2s_config_blob_header hdr;
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u32 tdm_ts_group[SKL_I2S_MAX_TIME_SLOTS];
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struct skl_i2s_config i2s_cfg;
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struct skl_i2s_config_mclk_ext mclk;
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} __packed;
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#endif /* __SOUND_SOC_SKL_I2S_H */
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