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72 lines
1.8 KiB
72 lines
1.8 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (c) 2017 Chen-Yu Tsai. All rights reserved. |
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*/ |
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#ifndef _CCU_SDM_H |
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#define _CCU_SDM_H |
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#include <linux/clk-provider.h> |
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#include "ccu_common.h" |
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struct ccu_sdm_setting { |
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unsigned long rate; |
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/* |
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* XXX We don't know what the step and bottom register fields |
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* mean. Just copy the whole register value from the vendor |
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* kernel for now. |
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*/ |
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u32 pattern; |
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/* |
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* M and N factors here should be the values used in |
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* calculation, not the raw values written to registers |
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*/ |
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u32 m; |
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u32 n; |
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}; |
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struct ccu_sdm_internal { |
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struct ccu_sdm_setting *table; |
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u32 table_size; |
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/* early SoCs don't have the SDM enable bit in the PLL register */ |
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u32 enable; |
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/* second enable bit in tuning register */ |
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u32 tuning_enable; |
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u16 tuning_reg; |
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}; |
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#define _SUNXI_CCU_SDM(_table, _enable, \ |
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_reg, _reg_enable) \ |
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{ \ |
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.table = _table, \ |
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.table_size = ARRAY_SIZE(_table), \ |
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.enable = _enable, \ |
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.tuning_enable = _reg_enable, \ |
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.tuning_reg = _reg, \ |
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} |
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bool ccu_sdm_helper_is_enabled(struct ccu_common *common, |
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struct ccu_sdm_internal *sdm); |
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void ccu_sdm_helper_enable(struct ccu_common *common, |
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struct ccu_sdm_internal *sdm, |
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unsigned long rate); |
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void ccu_sdm_helper_disable(struct ccu_common *common, |
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struct ccu_sdm_internal *sdm); |
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bool ccu_sdm_helper_has_rate(struct ccu_common *common, |
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struct ccu_sdm_internal *sdm, |
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unsigned long rate); |
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unsigned long ccu_sdm_helper_read_rate(struct ccu_common *common, |
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struct ccu_sdm_internal *sdm, |
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u32 m, u32 n); |
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int ccu_sdm_helper_get_factors(struct ccu_common *common, |
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struct ccu_sdm_internal *sdm, |
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unsigned long rate, |
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unsigned long *m, unsigned long *n); |
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#endif
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