diff options
Diffstat (limited to 'drivers/clk/samsung/clk.h')
| -rw-r--r-- | drivers/clk/samsung/clk.h | 123 |
1 files changed, 104 insertions, 19 deletions
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index 2f7dba20ced..9693b80d924 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -19,6 +19,19 @@ #include <linux/clk-provider.h> #include <linux/of.h> #include <linux/of_address.h> +#include "clk-pll.h" + +/** + * struct samsung_clk_provider: information about clock provider + * @reg_base: virtual address for the register base. + * @clk_data: holds clock related data like clk* and number of clocks. + * @lock: maintains exclusion bwtween callbacks for a given clock-provider. + */ +struct samsung_clk_provider { + void __iomem *reg_base; + struct clk_onecell_data clk_data; + spinlock_t lock; +}; /** * struct samsung_clock_alias: information about mux clock @@ -39,6 +52,8 @@ struct samsung_clock_alias { .alias = a, \ } +#define MHZ (1000 * 1000) + /** * struct samsung_fixed_rate_clock: information about fixed-rate clock * @id: platform specific id of the clock. @@ -127,7 +142,7 @@ struct samsung_mux_clock { .name = cname, \ .parent_names = pnames, \ .num_parents = ARRAY_SIZE(pnames), \ - .flags = f, \ + .flags = (f) | CLK_SET_RATE_NO_REPARENT, \ .offset = o, \ .shift = s, \ .width = w, \ @@ -261,30 +276,100 @@ struct samsung_clk_reg_dump { u32 value; }; -extern void __init samsung_clk_init(struct device_node *np, void __iomem *base, - unsigned long nr_clks, unsigned long *rdump, - unsigned long nr_rdump, unsigned long *soc_rdump, - unsigned long nr_soc_rdump); +/** + * struct samsung_pll_clock: information about pll clock + * @id: platform specific id of the clock. + * @dev_name: name of the device to which this clock belongs. + * @name: name of this pll clock. + * @parent_name: name of the parent clock. + * @flags: optional flags for basic clock. + * @con_offset: offset of the register for configuring the PLL. + * @lock_offset: offset of the register for locking the PLL. + * @type: Type of PLL to be registered. + * @alias: optional clock alias name to be assigned to this clock. + */ +struct samsung_pll_clock { + unsigned int id; + const char *dev_name; + const char *name; + const char *parent_name; + unsigned long flags; + int con_offset; + int lock_offset; + enum samsung_pll_type type; + const struct samsung_pll_rate_table *rate_table; + const char *alias; +}; + +#define __PLL(_typ, _id, _dname, _name, _pname, _flags, _lock, _con, \ + _rtable, _alias) \ + { \ + .id = _id, \ + .type = _typ, \ + .dev_name = _dname, \ + .name = _name, \ + .parent_name = _pname, \ + .flags = CLK_GET_RATE_NOCACHE, \ + .con_offset = _con, \ + .lock_offset = _lock, \ + .rate_table = _rtable, \ + .alias = _alias, \ + } + +#define PLL(_typ, _id, _name, _pname, _lock, _con, _rtable) \ + __PLL(_typ, _id, NULL, _name, _pname, CLK_GET_RATE_NOCACHE, \ + _lock, _con, _rtable, _name) + +#define PLL_A(_typ, _id, _name, _pname, _lock, _con, _alias, _rtable) \ + __PLL(_typ, _id, NULL, _name, _pname, CLK_GET_RATE_NOCACHE, \ + _lock, _con, _rtable, _alias) + +extern struct samsung_clk_provider *__init samsung_clk_init( + struct device_node *np, void __iomem *base, + unsigned long nr_clks); extern void __init samsung_clk_of_register_fixed_ext( - struct samsung_fixed_rate_clock *fixed_rate_clk, - unsigned int nr_fixed_rate_clk, - struct of_device_id *clk_matches); + struct samsung_clk_provider *ctx, + struct samsung_fixed_rate_clock *fixed_rate_clk, + unsigned int nr_fixed_rate_clk, + struct of_device_id *clk_matches); -extern void samsung_clk_add_lookup(struct clk *clk, unsigned int id); +extern void samsung_clk_add_lookup(struct samsung_clk_provider *ctx, + struct clk *clk, unsigned int id); -extern void samsung_clk_register_alias(struct samsung_clock_alias *list, - unsigned int nr_clk); +extern void samsung_clk_register_alias(struct samsung_clk_provider *ctx, + struct samsung_clock_alias *list, + unsigned int nr_clk); extern void __init samsung_clk_register_fixed_rate( - struct samsung_fixed_rate_clock *clk_list, unsigned int nr_clk); + struct samsung_clk_provider *ctx, + struct samsung_fixed_rate_clock *clk_list, + unsigned int nr_clk); extern void __init samsung_clk_register_fixed_factor( - struct samsung_fixed_factor_clock *list, unsigned int nr_clk); -extern void __init samsung_clk_register_mux(struct samsung_mux_clock *clk_list, - unsigned int nr_clk); -extern void __init samsung_clk_register_div(struct samsung_div_clock *clk_list, - unsigned int nr_clk); -extern void __init samsung_clk_register_gate( - struct samsung_gate_clock *clk_list, unsigned int nr_clk); + struct samsung_clk_provider *ctx, + struct samsung_fixed_factor_clock *list, + unsigned int nr_clk); +extern void __init samsung_clk_register_mux(struct samsung_clk_provider *ctx, + struct samsung_mux_clock *clk_list, + unsigned int nr_clk); +extern void __init samsung_clk_register_div(struct samsung_clk_provider *ctx, + struct samsung_div_clock *clk_list, + unsigned int nr_clk); +extern void __init samsung_clk_register_gate(struct samsung_clk_provider *ctx, + struct samsung_gate_clock *clk_list, + unsigned int nr_clk); +extern void __init samsung_clk_register_pll(struct samsung_clk_provider *ctx, + struct samsung_pll_clock *pll_list, + unsigned int nr_clk, void __iomem *base); extern unsigned long _get_rate(const char *clk_name); +extern void samsung_clk_save(void __iomem *base, + struct samsung_clk_reg_dump *rd, + unsigned int num_regs); +extern void samsung_clk_restore(void __iomem *base, + const struct samsung_clk_reg_dump *rd, + unsigned int num_regs); +extern struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( + const unsigned long *rdump, + unsigned long nr_rdump); + #endif /* __SAMSUNG_CLK_H */ |