109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// Spreadtrum pll clock driver
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//
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// Copyright (C) 2015~2017 Spreadtrum, Inc.
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// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
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#ifndef _SPRD_PLL_H_
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#define _SPRD_PLL_H_
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#include "common.h"
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struct reg_cfg {
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u32 val;
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u32 msk;
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};
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struct clk_bit_field {
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u8 shift;
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u8 width;
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};
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enum {
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PLL_LOCK_DONE,
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PLL_DIV_S,
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PLL_MOD_EN,
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PLL_SDM_EN,
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PLL_REFIN,
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PLL_IBIAS,
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PLL_N,
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PLL_NINT,
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PLL_KINT,
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PLL_PREDIV,
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PLL_POSTDIV,
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PLL_FACT_MAX
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};
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/*
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* struct sprd_pll - definition of adjustable pll clock
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*
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* @reg: registers used to set the configuration of pll clock,
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* reg[0] shows how many registers this pll clock uses.
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* @itable: pll ibias table, itable[0] means how many items this
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* table includes
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* @udelay delay time after setting rate
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* @factors used to calculate the pll clock rate
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* @fvco: fvco threshold rate
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* @fflag: fvco flag
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*/
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struct sprd_pll {
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u32 regs_num;
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const u64 *itable;
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const struct clk_bit_field *factors;
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u16 udelay;
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u16 k1;
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u16 k2;
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u16 fflag;
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u64 fvco;
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struct sprd_clk_common common;
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};
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#define SPRD_PLL_WITH_ITABLE_K_FVCO(_struct, _name, _parent, _reg, \
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_regs_num, _itable, _factors, \
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_udelay, _k1, _k2, _fflag, _fvco) \
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struct sprd_pll _struct = { \
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.regs_num = _regs_num, \
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.itable = _itable, \
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.factors = _factors, \
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.udelay = _udelay, \
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.k1 = _k1, \
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.k2 = _k2, \
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.fflag = _fflag, \
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.fvco = _fvco, \
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.common = { \
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.regmap = NULL, \
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.reg = _reg, \
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.hw.init = CLK_HW_INIT(_name, \
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_parent, \
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&sprd_pll_ops, \
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0), \
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}, \
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}
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#define SPRD_PLL_WITH_ITABLE_K(_struct, _name, _parent, _reg, \
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_regs_num, _itable, _factors, \
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_udelay, _k1, _k2) \
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SPRD_PLL_WITH_ITABLE_K_FVCO(_struct, _name, _parent, _reg, \
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_regs_num, _itable, _factors, \
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_udelay, _k1, _k2, 0, 0)
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#define SPRD_PLL_WITH_ITABLE_1K(_struct, _name, _parent, _reg, \
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_regs_num, _itable, _factors, _udelay) \
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SPRD_PLL_WITH_ITABLE_K_FVCO(_struct, _name, _parent, _reg, \
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_regs_num, _itable, _factors, \
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_udelay, 1000, 1000, 0, 0)
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static inline struct sprd_pll *hw_to_sprd_pll(struct clk_hw *hw)
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{
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struct sprd_clk_common *common = hw_to_sprd_clk_common(hw);
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return container_of(common, struct sprd_pll, common);
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}
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extern const struct clk_ops sprd_pll_ops;
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#endif /* _SPRD_PLL_H_ */
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