mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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a77b5ac0ea
This updates the SH7785 CPU code as well as the SH7785LCR board support code for making use of the newly refactored clock framework. Support for the legacy CPG clocks is dropped at this point, with the extal frequency fed in from the board code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
99 lines
2.0 KiB
C
99 lines
2.0 KiB
C
#ifndef __ASM_SH_CLOCK_H
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#define __ASM_SH_CLOCK_H
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#include <linux/list.h>
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#include <linux/seq_file.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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struct clk;
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struct clk_ops {
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void (*init)(struct clk *clk);
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int (*enable)(struct clk *clk);
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void (*disable)(struct clk *clk);
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unsigned long (*recalc)(struct clk *clk);
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int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
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int (*set_parent)(struct clk *clk, struct clk *parent);
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long (*round_rate)(struct clk *clk, unsigned long rate);
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};
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struct clk {
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struct list_head node;
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const char *name;
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int id;
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struct module *owner;
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struct clk *parent;
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struct clk_ops *ops;
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struct list_head children;
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struct list_head sibling; /* node for children */
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int usecount;
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unsigned long rate;
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unsigned long flags;
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unsigned long arch_flags;
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void *priv;
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};
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struct clk_lookup {
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struct list_head node;
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const char *dev_id;
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const char *con_id;
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struct clk *clk;
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};
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#define CLK_ENABLE_ON_INIT (1 << 0)
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/* Should be defined by processor-specific code */
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void __deprecated arch_init_clk_ops(struct clk_ops **, int type);
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int __init arch_clk_init(void);
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/* arch/sh/kernel/cpu/clock.c */
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int clk_init(void);
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unsigned long followparent_recalc(struct clk *);
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void recalculate_root_clocks(void);
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void propagate_rate(struct clk *);
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int clk_reparent(struct clk *child, struct clk *parent);
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int clk_register(struct clk *);
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void clk_unregister(struct clk *);
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/* arch/sh/kernel/cpu/clock-cpg.c */
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int __init __deprecated cpg_clk_init(void);
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/* the exported API, in addition to clk_set_rate */
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/**
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* clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
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* @clk: clock source
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* @rate: desired clock rate in Hz
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* @algo_id: algorithm id to be passed down to ops->set_rate
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*
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* Returns success (0) or negative errno.
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*/
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int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
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enum clk_sh_algo_id {
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NO_CHANGE = 0,
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IUS_N1_N1,
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IUS_322,
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IUS_522,
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IUS_N11,
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SB_N1,
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SB3_N1,
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SB3_32,
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SB3_43,
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SB3_54,
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BP_N1,
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IP_N1,
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};
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#endif /* __ASM_SH_CLOCK_H */
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