1 #ifndef __ASM_SH_CLOCK_H 2 #define __ASM_SH_CLOCK_H 3 4 #include <linux/list.h> 5 #include <linux/seq_file.h> 6 #include <linux/clk.h> 7 #include <linux/err.h> 8 9 struct clk; 10 11 struct clk_ops { 12 void (*init)(struct clk *clk); 13 int (*enable)(struct clk *clk); 14 void (*disable)(struct clk *clk); 15 unsigned long (*recalc)(struct clk *clk); 16 int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id); 17 int (*set_parent)(struct clk *clk, struct clk *parent); 18 long (*round_rate)(struct clk *clk, unsigned long rate); 19 }; 20 21 struct clk { 22 struct list_head node; 23 const char *name; 24 int id; 25 struct module *owner; 26 27 struct clk *parent; 28 struct clk_ops *ops; 29 30 struct list_head children; 31 struct list_head sibling; /* node for children */ 32 33 int usecount; 34 35 unsigned long rate; 36 unsigned long flags; 37 38 void __iomem *enable_reg; 39 unsigned int enable_bit; 40 41 unsigned long arch_flags; 42 void *priv; 43 struct dentry *dentry; 44 }; 45 46 struct clk_lookup { 47 struct list_head node; 48 const char *dev_id; 49 const char *con_id; 50 struct clk *clk; 51 }; 52 53 #define CLK_ENABLE_ON_INIT (1 << 0) 54 55 /* Should be defined by processor-specific code */ 56 void __deprecated arch_init_clk_ops(struct clk_ops **, int type); 57 int __init arch_clk_init(void); 58 59 /* arch/sh/kernel/cpu/clock.c */ 60 int clk_init(void); 61 unsigned long followparent_recalc(struct clk *); 62 void recalculate_root_clocks(void); 63 void propagate_rate(struct clk *); 64 int clk_reparent(struct clk *child, struct clk *parent); 65 int clk_register(struct clk *); 66 void clk_unregister(struct clk *); 67 68 /* arch/sh/kernel/cpu/clock-cpg.c */ 69 int __init __deprecated cpg_clk_init(void); 70 71 /* the exported API, in addition to clk_set_rate */ 72 /** 73 * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter 74 * @clk: clock source 75 * @rate: desired clock rate in Hz 76 * @algo_id: algorithm id to be passed down to ops->set_rate 77 * 78 * Returns success (0) or negative errno. 79 */ 80 int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id); 81 82 enum clk_sh_algo_id { 83 NO_CHANGE = 0, 84 85 IUS_N1_N1, 86 IUS_322, 87 IUS_522, 88 IUS_N11, 89 90 SB_N1, 91 92 SB3_N1, 93 SB3_32, 94 SB3_43, 95 SB3_54, 96 97 BP_N1, 98 99 IP_N1, 100 }; 101 102 struct clk_div_mult_table { 103 unsigned int *divisors; 104 unsigned int nr_divisors; 105 unsigned int *multipliers; 106 unsigned int nr_multipliers; 107 }; 108 109 struct cpufreq_frequency_table; 110 void clk_rate_table_build(struct clk *clk, 111 struct cpufreq_frequency_table *freq_table, 112 int nr_freqs, 113 struct clk_div_mult_table *src_table, 114 unsigned long *bitmap); 115 116 long clk_rate_table_round(struct clk *clk, 117 struct cpufreq_frequency_table *freq_table, 118 unsigned long rate); 119 120 #define SH_CLK_MSTP32(_name, _id, _parent, _enable_reg, \ 121 _enable_bit, _flags) \ 122 { \ 123 .name = _name, \ 124 .id = _id, \ 125 .parent = _parent, \ 126 .enable_reg = (void __iomem *)_enable_reg, \ 127 .enable_bit = _enable_bit, \ 128 .flags = _flags, \ 129 } 130 131 int sh_clk_mstp32_register(struct clk *clks, int nr); 132 133 #endif /* __ASM_SH_CLOCK_H */ 134