diff options
Diffstat (limited to 'drivers/clk/samsung/clk.h')
| -rw-r--r-- | drivers/clk/samsung/clk.h | 247 |
1 files changed, 150 insertions, 97 deletions
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index c3f309d7100d..18660c1ac6f0 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -1,12 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2013 Samsung Electronics Co., Ltd. * Copyright (c) 2013 Linaro Ltd. * Author: Thomas Abraham <thomas.ab@samsung.com> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * Common Clock Framework support for all Samsung platforms */ @@ -14,27 +11,30 @@ #define __SAMSUNG_CLK_H #include <linux/clk-provider.h> +#include <linux/mod_devicetable.h> #include "clk-pll.h" +#include "clk-cpu.h" /** - * struct samsung_clk_provider: information about clock provider - * @reg_base: virtual address for the register base. - * @lock: maintains exclusion between callbacks for a given clock-provider. - * @clk_data: holds clock related data like clk_hw* and number of clocks. + * struct samsung_clk_provider - information about clock provider + * @reg_base: virtual address for the register base + * @dev: clock provider device needed for runtime PM + * @lock: maintains exclusion between callbacks for a given clock-provider + * @clk_data: holds clock related data like clk_hw* and number of clocks */ struct samsung_clk_provider { void __iomem *reg_base; struct device *dev; spinlock_t lock; - /* clk_data must be the last entry due to variable lenght 'hws' array */ + /* clk_data must be the last entry due to variable length 'hws' array */ struct clk_hw_onecell_data clk_data; }; /** - * struct samsung_clock_alias: information about mux clock - * @id: platform specific id of the clock. - * @dev_name: name of the device to which this clock belongs. - * @alias: optional clock alias name to be assigned to this clock. + * struct samsung_clock_alias - information about mux clock + * @id: platform specific id of the clock + * @dev_name: name of the device to which this clock belongs + * @alias: optional clock alias name to be assigned to this clock */ struct samsung_clock_alias { unsigned int id; @@ -52,12 +52,12 @@ struct samsung_clock_alias { #define MHZ (1000 * 1000) /** - * struct samsung_fixed_rate_clock: information about fixed-rate clock - * @id: platform specific id of the clock. - * @name: name of this fixed-rate clock. - * @parent_name: optional parent clock name. - * @flags: optional fixed-rate clock flags. - * @fixed-rate: fixed clock rate of this clock. + * struct samsung_fixed_rate_clock - information about fixed-rate clock + * @id: platform specific id of the clock + * @name: name of this fixed-rate clock + * @parent_name: optional parent clock name + * @flags: optional fixed-rate clock flags + * @fixed_rate: fixed clock rate of this clock */ struct samsung_fixed_rate_clock { unsigned int id; @@ -76,14 +76,14 @@ struct samsung_fixed_rate_clock { .fixed_rate = frate, \ } -/* - * struct samsung_fixed_factor_clock: information about fixed-factor clock - * @id: platform specific id of the clock. - * @name: name of this fixed-factor clock. - * @parent_name: parent clock name. - * @mult: fixed multiplication factor. - * @div: fixed division factor. - * @flags: optional fixed-factor clock flags. +/** + * struct samsung_fixed_factor_clock - information about fixed-factor clock + * @id: platform specific id of the clock + * @name: name of this fixed-factor clock + * @parent_name: parent clock name + * @mult: fixed multiplication factor + * @div: fixed division factor + * @flags: optional fixed-factor clock flags */ struct samsung_fixed_factor_clock { unsigned int id; @@ -105,16 +105,16 @@ struct samsung_fixed_factor_clock { } /** - * struct samsung_mux_clock: information about mux clock - * @id: platform specific id of the clock. - * @name: name of this mux clock. - * @parent_names: array of pointer to parent clock names. - * @num_parents: number of parents listed in @parent_names. - * @flags: optional flags for basic clock. - * @offset: offset of the register for configuring the mux. - * @shift: starting bit location of the mux control bit-field in @reg. - * @width: width of the mux control bit-field in @reg. - * @mux_flags: flags for mux-type clock. + * struct samsung_mux_clock - information about mux clock + * @id: platform specific id of the clock + * @name: name of this mux clock + * @parent_names: array of pointer to parent clock names + * @num_parents: number of parents listed in @parent_names + * @flags: optional flags for basic clock + * @offset: offset of the register for configuring the mux + * @shift: starting bit location of the mux control bit-field in @reg + * @width: width of the mux control bit-field in @reg + * @mux_flags: flags for mux-type clock */ struct samsung_mux_clock { unsigned int id; @@ -134,7 +134,7 @@ struct samsung_mux_clock { .name = cname, \ .parent_names = pnames, \ .num_parents = ARRAY_SIZE(pnames), \ - .flags = (f) | CLK_SET_RATE_NO_REPARENT, \ + .flags = f, \ .offset = o, \ .shift = s, \ .width = w, \ @@ -142,20 +142,29 @@ struct samsung_mux_clock { } #define MUX(_id, cname, pnames, o, s, w) \ - __MUX(_id, cname, pnames, o, s, w, 0, 0) + __MUX(_id, cname, pnames, o, s, w, CLK_SET_RATE_NO_REPARENT, 0) #define MUX_F(_id, cname, pnames, o, s, w, f, mf) \ + __MUX(_id, cname, pnames, o, s, w, (f) | CLK_SET_RATE_NO_REPARENT, mf) + +/* Used by MUX clocks where reparenting on clock rate change is allowed. */ +#define nMUX(_id, cname, pnames, o, s, w) \ + __MUX(_id, cname, pnames, o, s, w, 0, 0) + +#define nMUX_F(_id, cname, pnames, o, s, w, f, mf) \ __MUX(_id, cname, pnames, o, s, w, f, mf) /** - * @id: platform specific id of the clock. - * struct samsung_div_clock: information about div clock - * @name: name of this div clock. - * @parent_name: name of the parent clock. - * @flags: optional flags for basic clock. - * @offset: offset of the register for configuring the div. - * @shift: starting bit location of the div control bit-field in @reg. - * @div_flags: flags for div-type clock. + * struct samsung_div_clock - information about div clock + * @id: platform specific id of the clock + * @name: name of this div clock + * @parent_name: name of the parent clock + * @flags: optional flags for basic clock + * @offset: offset of the register for configuring the div + * @shift: starting bit location of the div control bit-field in @reg + * @width: width of the bitfield + * @div_flags: flags for div-type clock + * @table: array of divider/value pairs ending with a div set to 0 */ struct samsung_div_clock { unsigned int id; @@ -192,14 +201,14 @@ struct samsung_div_clock { __DIV(_id, cname, pname, o, s, w, 0, 0, t) /** - * struct samsung_gate_clock: information about gate clock - * @id: platform specific id of the clock. - * @name: name of this gate clock. - * @parent_name: name of the parent clock. - * @flags: optional flags for basic clock. - * @offset: offset of the register for configuring the gate. - * @bit_idx: bit index of the gate control bit-field in @reg. - * @gate_flags: flags for gate-type clock. + * struct samsung_gate_clock - information about gate clock + * @id: platform specific id of the clock + * @name: name of this gate clock + * @parent_name: name of the parent clock + * @flags: optional flags for basic clock + * @offset: offset of the register for configuring the gate + * @bit_idx: bit index of the gate control bit-field in @reg + * @gate_flags: flags for gate-type clock */ struct samsung_gate_clock { unsigned int id; @@ -228,9 +237,9 @@ struct samsung_gate_clock { #define PNAME(x) static const char * const x[] __initconst /** - * struct samsung_clk_reg_dump: register dump of clock controller registers. - * @offset: clock register offset from the controller base address. - * @value: the value to be register at offset. + * struct samsung_clk_reg_dump - register dump of clock controller registers + * @offset: clock register offset from the controller base address + * @value: the value to be register at offset */ struct samsung_clk_reg_dump { u32 offset; @@ -238,14 +247,15 @@ struct samsung_clk_reg_dump { }; /** - * struct samsung_pll_clock: information about pll clock - * @id: platform specific id of the clock. - * @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. + * struct samsung_pll_clock - information about pll clock + * @id: platform specific id of the clock + * @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 + * @rate_table: array of PLL settings for possible PLL rates */ struct samsung_pll_clock { unsigned int id; @@ -274,6 +284,29 @@ struct samsung_pll_clock { __PLL(_typ, _id, _name, _pname, CLK_GET_RATE_NOCACHE, _lock, \ _con, _rtable) +struct samsung_cpu_clock { + unsigned int id; + const char *name; + unsigned int parent_id; + unsigned int alt_parent_id; + unsigned long flags; + int offset; + enum exynos_cpuclk_layout reg_layout; + const struct exynos_cpuclk_cfg_data *cfg; +}; + +#define CPU_CLK(_id, _name, _pid, _apid, _flags, _offset, _layout, _cfg) \ + { \ + .id = _id, \ + .name = _name, \ + .parent_id = _pid, \ + .alt_parent_id = _apid, \ + .flags = _flags, \ + .offset = _offset, \ + .reg_layout = _layout, \ + .cfg = _cfg, \ + } + struct samsung_clock_reg_cache { struct list_head node; void __iomem *reg_base; @@ -283,85 +316,105 @@ struct samsung_clock_reg_cache { unsigned int rsuspend_num; }; +/** + * struct samsung_cmu_info - all clocks information needed for CMU registration + * @pll_clks: list of PLL clocks + * @nr_pll_clks: count of clocks in @pll_clks + * @mux_clks: list of mux clocks + * @nr_mux_clks: count of clocks in @mux_clks + * @div_clks: list of div clocks + * @nr_div_clks: count of clocks in @div_clks + * @gate_clks: list of gate clocks + * @nr_gate_clks: count of clocks in @gate_clks + * @fixed_clks: list of fixed clocks + * @nr_fixed_clks: count clocks in @fixed_clks + * @fixed_factor_clks: list of fixed factor clocks + * @nr_fixed_factor_clks: count of clocks in @fixed_factor_clks + * @nr_clk_ids: total number of clocks with IDs assigned + * @cpu_clks: list of CPU clocks + * @nr_cpu_clks: count of clocks in @cpu_clks + * @clk_regs: list of clock registers + * @nr_clk_regs: count of clock registers in @clk_regs + * @suspend_regs: list of clock registers to set before suspend + * @nr_suspend_regs: count of clock registers in @suspend_regs + * @clk_name: name of the parent clock needed for CMU register access + * @manual_plls: Enable manual control for PLL clocks + */ struct samsung_cmu_info { - /* list of pll clocks and respective count */ const struct samsung_pll_clock *pll_clks; unsigned int nr_pll_clks; - /* list of mux clocks and respective count */ const struct samsung_mux_clock *mux_clks; unsigned int nr_mux_clks; - /* list of div clocks and respective count */ const struct samsung_div_clock *div_clks; unsigned int nr_div_clks; - /* list of gate clocks and respective count */ const struct samsung_gate_clock *gate_clks; unsigned int nr_gate_clks; - /* list of fixed clocks and respective count */ const struct samsung_fixed_rate_clock *fixed_clks; unsigned int nr_fixed_clks; - /* list of fixed factor clocks and respective count */ const struct samsung_fixed_factor_clock *fixed_factor_clks; unsigned int nr_fixed_factor_clks; - /* total number of clocks with IDs assigned*/ unsigned int nr_clk_ids; + const struct samsung_cpu_clock *cpu_clks; + unsigned int nr_cpu_clks; - /* list and number of clocks registers */ const unsigned long *clk_regs; unsigned int nr_clk_regs; - /* list and number of clocks registers to set before suspend */ const struct samsung_clk_reg_dump *suspend_regs; unsigned int nr_suspend_regs; - /* name of the parent clock needed for CMU register access */ const char *clk_name; + + /* ARM64 Exynos CMUs */ + bool manual_plls; }; -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_add_provider(struct device_node *np, +struct samsung_clk_provider *samsung_clk_init(struct device *dev, + void __iomem *base, unsigned long nr_clks); +void samsung_clk_of_add_provider(struct device_node *np, struct samsung_clk_provider *ctx); -extern void __init samsung_clk_of_register_fixed_ext( +void samsung_clk_of_register_fixed_ext( struct samsung_clk_provider *ctx, struct samsung_fixed_rate_clock *fixed_rate_clk, unsigned int nr_fixed_rate_clk, const struct of_device_id *clk_matches); -extern void samsung_clk_add_lookup(struct samsung_clk_provider *ctx, +void samsung_clk_add_lookup(struct samsung_clk_provider *ctx, struct clk_hw *clk_hw, unsigned int id); -extern void __init samsung_clk_register_alias(struct samsung_clk_provider *ctx, +void samsung_clk_register_alias(struct samsung_clk_provider *ctx, const struct samsung_clock_alias *list, unsigned int nr_clk); -extern void __init samsung_clk_register_fixed_rate( +void samsung_clk_register_fixed_rate( struct samsung_clk_provider *ctx, const struct samsung_fixed_rate_clock *clk_list, unsigned int nr_clk); -extern void __init samsung_clk_register_fixed_factor( +void samsung_clk_register_fixed_factor( struct samsung_clk_provider *ctx, const struct samsung_fixed_factor_clock *list, unsigned int nr_clk); -extern void __init samsung_clk_register_mux(struct samsung_clk_provider *ctx, +void samsung_clk_register_mux(struct samsung_clk_provider *ctx, const struct samsung_mux_clock *clk_list, unsigned int nr_clk); -extern void __init samsung_clk_register_div(struct samsung_clk_provider *ctx, +void samsung_clk_register_div(struct samsung_clk_provider *ctx, const struct samsung_div_clock *clk_list, unsigned int nr_clk); -extern void __init samsung_clk_register_gate(struct samsung_clk_provider *ctx, +void samsung_clk_register_gate(struct samsung_clk_provider *ctx, const struct samsung_gate_clock *clk_list, unsigned int nr_clk); -extern void __init samsung_clk_register_pll(struct samsung_clk_provider *ctx, +void samsung_clk_register_pll(struct samsung_clk_provider *ctx, const struct samsung_pll_clock *pll_list, - unsigned int nr_clk, void __iomem *base); + unsigned int nr_clk); +void samsung_clk_register_cpu(struct samsung_clk_provider *ctx, + const struct samsung_cpu_clock *list, unsigned int nr_clk); -extern struct samsung_clk_provider __init *samsung_cmu_register_one( +void samsung_cmu_register_clocks(struct samsung_clk_provider *ctx, + const struct samsung_cmu_info *cmu); +struct samsung_clk_provider *samsung_cmu_register_one( struct device_node *, const struct samsung_cmu_info *); -extern unsigned long _get_rate(const char *clk_name); - #ifdef CONFIG_PM_SLEEP -extern void samsung_clk_extended_sleep_init(void __iomem *reg_base, +void samsung_clk_extended_sleep_init(void __iomem *reg_base, const unsigned long *rdump, unsigned long nr_rdump, const struct samsung_clk_reg_dump *rsuspend, @@ -376,13 +429,13 @@ static inline void samsung_clk_extended_sleep_init(void __iomem *reg_base, #define samsung_clk_sleep_init(reg_base, rdump, nr_rdump) \ samsung_clk_extended_sleep_init(reg_base, rdump, nr_rdump, NULL, 0) -extern void samsung_clk_save(void __iomem *base, +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, +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( +struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( const unsigned long *rdump, unsigned long nr_rdump); |