Release 4.11 drivers/clk/sunxi-ng/ccu_common.h

/*
 * Copyright (c) 2016 Maxime Ripard. All rights reserved.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _COMMON_H_

#define _COMMON_H_

#include <linux/compiler.h>
#include <linux/clk-provider.h>


#define CCU_FEATURE_FRACTIONAL		BIT(0)

#define CCU_FEATURE_VARIABLE_PREDIV	BIT(1)

#define CCU_FEATURE_FIXED_PREDIV	BIT(2)

#define CCU_FEATURE_FIXED_POSTDIV	BIT(3)

#define CCU_FEATURE_ALL_PREDIV		BIT(4)

#define CCU_FEATURE_LOCK_REG		BIT(5)

struct device_node;


#define CLK_HW_INIT(_name, _parent, _ops, _flags)			\
	&(struct clk_init_data) {                                       \
                .flags          = _flags,                               \
                .name           = _name,                                \
                .parent_names   = (const char *[]) { _parent },         \
                .num_parents    = 1,                                    \
                .ops            = _ops,                                 \
        }


#define CLK_HW_INIT_PARENTS(_name, _parents, _ops, _flags)		\
	&(struct clk_init_data) {                                       \
                .flags          = _flags,                               \
                .name           = _name,                                \
                .parent_names   = _parents,                             \
                .num_parents    = ARRAY_SIZE(_parents),                 \
                .ops            = _ops,                                 \
        }


#define CLK_FIXED_FACTOR(_struct, _name, _parent,                       \
			_div, _mult, _flags)				\
	struct clk_fixed_factor _struct = {                             \
                .div            = _div,                                 \
                .mult           = _mult,                                \
                .hw.init        = CLK_HW_INIT(_name,                    \
                                              _parent,                  \
                                              &clk_fixed_factor_ops,    \
                                              _flags),                  \
        }


struct ccu_common {
	
void __iomem	*base;
	
u16		reg;
	
u16		lock_reg;
	
u32		prediv;

	
unsigned long	features;
	
spinlock_t	*lock;
	
struct clk_hw	hw;
};



static inline struct ccu_common *hw_to_ccu_common(struct clk_hw *hw)
{
	return container_of(hw, struct ccu_common, hw);
}

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struct sunxi_ccu_desc {
	
struct ccu_common		**ccu_clks;
	
unsigned long			num_ccu_clks;

	
struct clk_hw_onecell_data	*hw_clks;

	
struct ccu_reset_map		*resets;
	
unsigned long			num_resets;
};

void ccu_helper_wait_for_lock(struct ccu_common *common, u32 lock);


struct ccu_pll_nb {
	
struct notifier_block	clk_nb;
	
struct ccu_common	*common;

	
u32	enable;
	
u32	lock;
};


#define to_ccu_pll_nb(_nb) container_of(_nb, struct ccu_pll_nb, clk_nb)

int ccu_pll_notifier_register(struct ccu_pll_nb *pll_nb);

int sunxi_ccu_probe(struct device_node *node, void __iomem *reg,
		    const struct sunxi_ccu_desc *desc);

#endif /* _COMMON_H_ */
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Directory: drivers/clk/sunxi-ng

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