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/*
* Copyright 2015 Linaro Ltd.
* Copyright (C) 2014 ZTE Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ZTE_CLK_H
#define __ZTE_CLK_H
#include <linux/clk-provider.h>
#include <linux/spinlock.h>
#define PNAME(x) static const char *x[]
#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, \
}
struct zx_pll_config {
unsigned long rate;
u32 cfg0;
u32 cfg1;
};
struct clk_zx_pll {
struct clk_hw hw;
void __iomem *reg_base;
const struct zx_pll_config *lookup_table; /* order by rate asc */
int count;
spinlock_t *lock;
u8 pd_bit; /* power down bit */
u8 lock_bit; /* pll lock flag bit */
};
#define PLL_RATE(_rate, _cfg0, _cfg1) \
{ \
.rate = _rate, \
.cfg0 = _cfg0, \
.cfg1 = _cfg1, \
}
#define ZX_PLL(_name, _parent, _reg, _table, _pd, _lock) \
{ \
.reg_base = (void __iomem *) _reg, \
.lookup_table = _table, \
.count = ARRAY_SIZE(_table), \
.pd_bit = _pd, \
.lock_bit = _lock, \
.hw.init = CLK_HW_INIT(_name, _parent, &zx_pll_ops, \
CLK_GET_RATE_NOCACHE), \
}
/*
* The pd_bit is not available on ZX296718, so let's pass something
* bigger than 31, e.g. 0xff, to indicate that.
*/
#define ZX296718_PLL(_name, _parent, _reg, _table) \
ZX_PLL(_name, _parent, _reg, _table, 0xff, 30)
struct zx_clk_gate {
struct clk_gate gate;
u16 id;
};
#define GATE(_id, _name, _parent, _reg, _bit, _flag, _gflags) \
{ \
.gate = { \
.reg = (void __iomem *) _reg, \
.bit_idx = (_bit), \
.flags = _gflags, \
.lock = &clk_lock, \
.hw.init = CLK_HW_INIT(_name, \
_parent, \
&clk_gate_ops, \
_flag | CLK_IGNORE_UNUSED), \
}, \
.id = _id, \
}
struct zx_clk_fixed_factor {
struct clk_fixed_factor factor;
u16 id;
};
#define FFACTOR(_id, _name, _parent, _mult, _div, _flag) \
{ \
.factor = { \
.div = _div, \
.mult = _mult, \
.hw.init = CLK_HW_INIT(_name, \
_parent, \
&clk_fixed_factor_ops, \
_flag), \
}, \
.id = _id, \
}
struct zx_clk_mux {
struct clk_mux mux;
u16 id;
};
#define MUX_F(_id, _name, _parent, _reg, _shift, _width, _flag, _mflag) \
{ \
.mux = { \
.reg = (void __iomem *) _reg, \
.mask = BIT(_width) - 1, \
.shift = _shift, \
.flags = _mflag, \
.lock = &clk_lock, \
.hw.init = CLK_HW_INIT_PARENTS(_name, \
_parent, \
&clk_mux_ops, \
_flag), \
}, \
.id = _id, \
}
#define MUX(_id, _name, _parent, _reg, _shift, _width) \
MUX_F(_id, _name, _parent, _reg, _shift, _width, 0, 0)
struct zx_clk_div {
struct clk_divider div;
u16 id;
};
#define DIV_T(_id, _name, _parent, _reg, _shift, _width, _flag, _table) \
{ \
.div = { \
.reg = (void __iomem *) _reg, \
.shift = _shift, \
.width = _width, \
.flags = 0, \
.table = _table, \
.lock = &clk_lock, \
.hw.init = CLK_HW_INIT(_name, \
_parent, \
&clk_divider_ops, \
_flag), \
}, \
.id = _id, \
}
struct clk_zx_audio_divider {
struct clk_hw hw;
void __iomem *reg_base;
unsigned int rate_count;
spinlock_t *lock;
u16 id;
};
#define AUDIO_DIV(_id, _name, _parent, _reg) \
{ \
.reg_base = (void __iomem *) _reg, \
.lock = &clk_lock, \
.hw.init = CLK_HW_INIT(_name, \
_parent, \
&zx_audio_div_ops, \
0), \
.id = _id, \
}
struct clk *clk_register_zx_pll(const char *name, const char *parent_name,
unsigned long flags, void __iomem *reg_base,
const struct zx_pll_config *lookup_table, int count, spinlock_t *lock);
struct clk_zx_audio {
struct clk_hw hw;
void __iomem *reg_base;
};
struct clk *clk_register_zx_audio(const char *name,
const char * const parent_name,
unsigned long flags, void __iomem *reg_base);
extern const struct clk_ops zx_pll_ops;
extern const struct clk_ops zx_audio_div_ops;
#endif
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