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1d80c14248
Start our new clock infrastructure by adding the registration code, common structure and common code. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/20160629190535.11855-3-maxime.ripard@free-electrons.com
86 lines
2.2 KiB
C
86 lines
2.2 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 _COMMON_H_
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#define _COMMON_H_
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#include <linux/compiler.h>
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#include <linux/clk-provider.h>
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#define CCU_FEATURE_FRACTIONAL BIT(0)
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#define CCU_FEATURE_VARIABLE_PREDIV BIT(1)
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#define CCU_FEATURE_FIXED_PREDIV BIT(2)
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#define CCU_FEATURE_FIXED_POSTDIV BIT(3)
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struct device_node;
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#define CLK_HW_INIT(_name, _parent, _ops, _flags) \
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&(struct clk_init_data) { \
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.flags = _flags, \
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.name = _name, \
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.parent_names = (const char *[]) { _parent }, \
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.num_parents = 1, \
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.ops = _ops, \
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}
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#define CLK_HW_INIT_PARENTS(_name, _parents, _ops, _flags) \
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&(struct clk_init_data) { \
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.flags = _flags, \
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.name = _name, \
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.parent_names = _parents, \
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.num_parents = ARRAY_SIZE(_parents), \
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.ops = _ops, \
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}
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#define CLK_FIXED_FACTOR(_struct, _name, _parent, \
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_div, _mult, _flags) \
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struct clk_fixed_factor _struct = { \
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.div = _div, \
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.mult = _mult, \
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.hw.init = CLK_HW_INIT(_name, \
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_parent, \
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&clk_fixed_factor_ops, \
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_flags), \
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}
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struct ccu_common {
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void __iomem *base;
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u16 reg;
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unsigned long features;
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spinlock_t *lock;
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struct clk_hw hw;
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};
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static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
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{
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return container_of(hw, struct ccu_common, hw);
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}
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struct sunxi_ccu_desc {
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struct ccu_common **ccu_clks;
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unsigned long num_ccu_clks;
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struct clk_hw_onecell_data *hw_clks;
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struct ccu_reset_map *resets;
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unsigned long num_resets;
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};
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void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);
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int sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
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const struct sunxi_ccu_desc *desc);
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#endif /* _COMMON_H_ */
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