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linux-headers-5.4.0-215-generic
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linux
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sh_clk.h
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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __SH_CLOCK_H #define __SH_CLOCK_H #include <linux/list.h> #include <linux/seq_file.h> #include <linux/cpufreq.h> #include <linux/types.h> #include <linux/kref.h> #include <linux/clk.h> #include <linux/err.h> struct clk; struct clk_mapping { phys_addr_t phys; void __iomem *base; unsigned long len; struct kref ref; }; struct sh_clk_ops { #ifdef CONFIG_SH_CLK_CPG_LEGACY void (*init)(struct clk *clk); #endif int (*enable)(struct clk *clk); void (*disable)(struct clk *clk); unsigned long (*recalc)(struct clk *clk); int (*set_rate)(struct clk *clk, unsigned long rate); int (*set_parent)(struct clk *clk, struct clk *parent); long (*round_rate)(struct clk *clk, unsigned long rate); }; #define SH_CLK_DIV_MSK(div) ((1 << (div)) - 1) #define SH_CLK_DIV4_MSK SH_CLK_DIV_MSK(4) #define SH_CLK_DIV6_MSK SH_CLK_DIV_MSK(6) struct clk { struct list_head node; struct clk *parent; struct clk **parent_table; /* list of parents to */ unsigned short parent_num; /* choose between */ unsigned char src_shift; /* source clock field in the */ unsigned char src_width; /* configuration register */ struct sh_clk_ops *ops; struct list_head children; struct list_head sibling; /* node for children */ int usecount; unsigned long rate; unsigned long flags; void __iomem *enable_reg; void __iomem *status_reg; unsigned int enable_bit; void __iomem *mapped_reg; unsigned int div_mask; unsigned long arch_flags; void *priv; struct clk_mapping *mapping; struct cpufreq_frequency_table *freq_table; unsigned int nr_freqs; }; #define CLK_ENABLE_ON_INIT BIT(0) #define CLK_ENABLE_REG_32BIT BIT(1) /* default access size */ #define CLK_ENABLE_REG_16BIT BIT(2) #define CLK_ENABLE_REG_8BIT BIT(3) #define CLK_MASK_DIV_ON_DISABLE BIT(4) #define CLK_ENABLE_REG_MASK (CLK_ENABLE_REG_32BIT | \ CLK_ENABLE_REG_16BIT | \ CLK_ENABLE_REG_8BIT) /* drivers/sh/clk.c */ unsigned long followparent_recalc(struct clk *); void recalculate_root_clocks(void); void propagate_rate(struct clk *); int clk_reparent(struct clk *child, struct clk *parent); int clk_register(struct clk *); void clk_unregister(struct clk *); void clk_enable_init_clocks(void); struct clk_div_mult_table { unsigned int *divisors; unsigned int nr_divisors; unsigned int *multipliers; unsigned int nr_multipliers; }; struct cpufreq_frequency_table; void clk_rate_table_build(struct clk *clk, struct cpufreq_frequency_table *freq_table, int nr_freqs, struct clk_div_mult_table *src_table, unsigned long *bitmap); long clk_rate_table_round(struct clk *clk, struct cpufreq_frequency_table *freq_table, unsigned long rate); int clk_rate_table_find(struct clk *clk, struct cpufreq_frequency_table *freq_table, unsigned long rate); long clk_rate_div_range_round(struct clk *clk, unsigned int div_min, unsigned int div_max, unsigned long rate); long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min, unsigned int mult_max, unsigned long rate); #define SH_CLK_MSTP(_parent, _enable_reg, _enable_bit, _status_reg, _flags) \ { \ .parent = _parent, \ .enable_reg = (void __iomem *)_enable_reg, \ .enable_bit = _enable_bit, \ .status_reg = _status_reg, \ .flags = _flags, \ } #define SH_CLK_MSTP32(_p, _r, _b, _f) \ SH_CLK_MSTP(_p, _r, _b, 0, _f | CLK_ENABLE_REG_32BIT) #define SH_CLK_MSTP32_STS(_p, _r, _b, _s, _f) \ SH_CLK_MSTP(_p, _r, _b, _s, _f | CLK_ENABLE_REG_32BIT) #define SH_CLK_MSTP16(_p, _r, _b, _f) \ SH_CLK_MSTP(_p, _r, _b, 0, _f | CLK_ENABLE_REG_16BIT) #define SH_CLK_MSTP8(_p, _r, _b, _f) \ SH_CLK_MSTP(_p, _r, _b, 0, _f | CLK_ENABLE_REG_8BIT) int sh_clk_mstp_register(struct clk *clks, int nr); /* * MSTP registration never really cared about access size, despite the * original enable/disable pairs assuming a 32-bit access. Clocks are * responsible for defining their access sizes either directly or via the * clock definition wrappers. */ static inline int __deprecated sh_clk_mstp32_register(struct clk *clks, int nr) { return sh_clk_mstp_register(clks, nr); } #define SH_CLK_DIV4(_parent, _reg, _shift, _div_bitmap, _flags) \ { \ .parent = _parent, \ .enable_reg = (void __iomem *)_reg, \ .enable_bit = _shift, \ .arch_flags = _div_bitmap, \ .div_mask = SH_CLK_DIV4_MSK, \ .flags = _flags, \ } struct clk_div_table { struct clk_div_mult_table *div_mult_table; void (*kick)(struct clk *clk); }; #define clk_div4_table clk_div_table int sh_clk_div4_register(struct clk *clks, int nr, struct clk_div4_table *table); int sh_clk_div4_enable_register(struct clk *clks, int nr, struct clk_div4_table *table); int sh_clk_div4_reparent_register(struct clk *clks, int nr, struct clk_div4_table *table); #define SH_CLK_DIV6_EXT(_reg, _flags, _parents, \ _num_parents, _src_shift, _src_width) \ { \ .enable_reg = (void __iomem *)_reg, \ .enable_bit = 0, /* unused */ \ .flags = _flags | CLK_MASK_DIV_ON_DISABLE, \ .div_mask = SH_CLK_DIV6_MSK, \ .parent_table = _parents, \ .parent_num = _num_parents, \ .src_shift = _src_shift, \ .src_width = _src_width, \ } #define SH_CLK_DIV6(_parent, _reg, _flags) \ { \ .parent = _parent, \ .enable_reg = (void __iomem *)_reg, \ .enable_bit = 0, /* unused */ \ .div_mask = SH_CLK_DIV6_MSK, \ .flags = _flags | CLK_MASK_DIV_ON_DISABLE, \ } int sh_clk_div6_register(struct clk *clks, int nr); int sh_clk_div6_reparent_register(struct clk *clks, int nr); #define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk } #define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk } #define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk } /* .enable_reg will be updated to .mapping on sh_clk_fsidiv_register() */ #define SH_CLK_FSIDIV(_reg, _parent) \ { \ .enable_reg = (void __iomem *)_reg, \ .parent = _parent, \ } int sh_clk_fsidiv_register(struct clk *clks, int nr); #endif /* __SH_CLOCK_H */