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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CLK_STARFIVE_JH71X0_H
#define __CLK_STARFIVE_JH71X0_H
#include <linux/bits.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/spinlock.h>
/* register fields */
#define JH71X0_CLK_ENABLE BIT(31)
#define JH71X0_CLK_INVERT BIT(30)
#define JH71X0_CLK_MUX_MASK GENMASK(27, 24)
#define JH71X0_CLK_MUX_SHIFT 24
#define JH71X0_CLK_DIV_MASK GENMASK(23, 0)
#define JH71X0_CLK_FRAC_MASK GENMASK(15, 8)
#define JH71X0_CLK_FRAC_SHIFT 8
#define JH71X0_CLK_INT_MASK GENMASK(7, 0)
/* fractional divider min/max */
#define JH71X0_CLK_FRAC_MIN 100UL
#define JH71X0_CLK_FRAC_MAX 25599UL
/* clock data */
struct jh71x0_clk_data {
const char *name;
unsigned long flags;
u32 max;
u8 parents[4];
};
#define JH71X0_GATE(_idx, _name, _flags, _parent) \
[_idx] = { \
.name = _name, \
.flags = CLK_SET_RATE_PARENT | (_flags), \
.max = JH71X0_CLK_ENABLE, \
.parents = { [0] = _parent }, \
}
#define JH71X0__DIV(_idx, _name, _max, _parent) \
[_idx] = { \
.name = _name, \
.flags = 0, \
.max = _max, \
.parents = { [0] = _parent }, \
}
#define JH71X0_GDIV(_idx, _name, _flags, _max, _parent) \
[_idx] = { \
.name = _name, \
.flags = _flags, \
.max = JH71X0_CLK_ENABLE | (_max), \
.parents = { [0] = _parent }, \
}
#define JH71X0_FDIV(_idx, _name, _parent) \
[_idx] = { \
.name = _name, \
.flags = 0, \
.max = JH71X0_CLK_FRAC_MAX, \
.parents = { [0] = _parent }, \
}
#define JH71X0__MUX(_idx, _name, _flags, _nparents, ...) \
[_idx] = { \
.name = _name, \
.flags = _flags, \
.max = ((_nparents) - 1) << JH71X0_CLK_MUX_SHIFT, \
.parents = { __VA_ARGS__ }, \
}
#define JH71X0_GMUX(_idx, _name, _flags, _nparents, ...) \
[_idx] = { \
.name = _name, \
.flags = _flags, \
.max = JH71X0_CLK_ENABLE | \
(((_nparents) - 1) << JH71X0_CLK_MUX_SHIFT), \
.parents = { __VA_ARGS__ }, \
}
#define JH71X0_MDIV(_idx, _name, _max, _nparents, ...) \
[_idx] = { \
.name = _name, \
.flags = 0, \
.max = (((_nparents) - 1) << JH71X0_CLK_MUX_SHIFT) | (_max), \
.parents = { __VA_ARGS__ }, \
}
#define JH71X0__GMD(_idx, _name, _flags, _max, _nparents, ...) \
[_idx] = { \
.name = _name, \
.flags = _flags, \
.max = JH71X0_CLK_ENABLE | \
(((_nparents) - 1) << JH71X0_CLK_MUX_SHIFT) | (_max), \
.parents = { __VA_ARGS__ }, \
}
#define JH71X0__INV(_idx, _name, _parent) \
[_idx] = { \
.name = _name, \
.flags = CLK_SET_RATE_PARENT, \
.max = JH71X0_CLK_INVERT, \
.parents = { [0] = _parent }, \
}
struct jh71x0_clk {
struct clk_hw hw;
unsigned int idx;
unsigned int max_div;
};
struct jh71x0_clk_priv {
/* protect clk enable and set rate/parent from happening at the same time */
spinlock_t rmw_lock;
struct device *dev;
void __iomem *base;
struct clk *original_clk;
struct notifier_block pll_clk_nb;
struct clk_hw *pll[3];
struct jh71x0_clk reg[];
};
const struct clk_ops *starfive_jh71x0_clk_ops(u32 max);
#endif
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