forked from mirrors/linux
1a7e7c388d
Some clocks in the Allwinner SoCs clocks unit are just simple gates. Add support for those clocks. Since it's a feature that can also be found in more complex clocks, provide a bunch of helpers that can be reused later on. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/20160629190535.11855-5-maxime.ripard@free-electrons.com
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*
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* Copyright (c) 2016 Maxime Ripard. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _CCU_GATE_H_
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#define _CCU_GATE_H_
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#include <linux/clk-provider.h>
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#include "ccu_common.h"
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struct ccu_gate {
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u32 enable;
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struct ccu_common common;
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};
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#define SUNXI_CCU_GATE(_struct, _name, _parent, _reg, _gate, _flags) \
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struct ccu_gate _struct = { \
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.enable = _gate, \
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.common = { \
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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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&ccu_gate_ops, \
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_flags), \
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} \
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}
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static inline struct ccu_gate *hw_to_ccu_gate(struct clk_hw *hw)
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{
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struct ccu_common *common = hw_to_ccu_common(hw);
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return container_of(common, struct ccu_gate, common);
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}
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void ccu_gate_helper_disable(struct ccu_common *common, u32 gate);
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int ccu_gate_helper_enable(struct ccu_common *common, u32 gate);
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int ccu_gate_helper_is_enabled(struct ccu_common *common, u32 gate);
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extern const struct clk_ops ccu_gate_ops;
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#endif /* _CCU_GATE_H_ */
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