187e5cd2d1
Some sprd's gate clocks are used to the switch of pll, which need to wait a certain time for stable after being enabled. Signed-off-by: Xiaolong Zhang <xiaolong.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-2-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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//
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// Spreadtrum gate clock driver
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//
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// Copyright (C) 2017 Spreadtrum, Inc.
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// Author: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
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#ifndef _SPRD_GATE_H_
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#define _SPRD_GATE_H_
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#include "common.h"
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struct sprd_gate {
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u32 enable_mask;
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u16 flags;
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u16 sc_offset;
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u16 udelay;
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struct sprd_clk_common common;
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};
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#define SPRD_SC_GATE_CLK_OPS_UDELAY(_struct, _name, _parent, _reg, \
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_sc_offset, _enable_mask, _flags, \
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_gate_flags, _udelay, _ops) \
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struct sprd_gate _struct = { \
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.enable_mask = _enable_mask, \
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.sc_offset = _sc_offset, \
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.flags = _gate_flags, \
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.udelay = _udelay, \
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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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_ops, \
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_flags), \
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} \
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}
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#define SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, _sc_offset, \
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_enable_mask, _flags, _gate_flags, _ops) \
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SPRD_SC_GATE_CLK_OPS_UDELAY(_struct, _name, _parent, _reg, \
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_sc_offset, _enable_mask, _flags, \
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_gate_flags, 0, _ops)
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#define SPRD_GATE_CLK(_struct, _name, _parent, _reg, \
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_enable_mask, _flags, _gate_flags) \
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SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, 0, \
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_enable_mask, _flags, _gate_flags, \
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&sprd_gate_ops)
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#define SPRD_SC_GATE_CLK(_struct, _name, _parent, _reg, _sc_offset, \
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_enable_mask, _flags, _gate_flags) \
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SPRD_SC_GATE_CLK_OPS(_struct, _name, _parent, _reg, _sc_offset, \
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_enable_mask, _flags, _gate_flags, \
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&sprd_sc_gate_ops)
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#define SPRD_PLL_SC_GATE_CLK(_struct, _name, _parent, _reg, _sc_offset, \
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_enable_mask, _flags, _gate_flags, _udelay) \
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SPRD_SC_GATE_CLK_OPS_UDELAY(_struct, _name, _parent, _reg, \
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_sc_offset, _enable_mask, _flags, \
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_gate_flags, _udelay, \
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&sprd_pll_sc_gate_ops)
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static inline struct sprd_gate *hw_to_sprd_gate(const 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_gate, common);
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}
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extern const struct clk_ops sprd_gate_ops;
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extern const struct clk_ops sprd_sc_gate_ops;
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extern const struct clk_ops sprd_pll_sc_gate_ops;
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#endif /* _SPRD_GATE_H_ */
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