diff options
Diffstat (limited to 'drivers/clk/samsung/clk.h')
| -rw-r--r-- | drivers/clk/samsung/clk.h | 56 |
1 files changed, 53 insertions, 3 deletions
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h index 18660c1ac6f0..b1192ca03db5 100644 --- a/drivers/clk/samsung/clk.h +++ b/drivers/clk/samsung/clk.h @@ -12,6 +12,7 @@ #include <linux/clk-provider.h> #include <linux/mod_devicetable.h> +#include <linux/regmap.h> #include "clk-pll.h" #include "clk-cpu.h" @@ -19,13 +20,25 @@ * struct samsung_clk_provider - information about clock provider * @reg_base: virtual address for the register base * @dev: clock provider device needed for runtime PM + * @sysreg: syscon regmap for clock-provider sysreg controller * @lock: maintains exclusion between callbacks for a given clock-provider + * @auto_clock_gate: enable auto clk mode for all clocks in clock-provider + * @gate_dbg_offset: gate debug reg offset. Used for all gates in auto clk mode + * @option_offset: option reg offset. Enables auto mode for clock-provider + * @drcg_offset: dynamic root clk gate enable register offset in sysreg + * @memclk_offset: memclk enable register offset in sysreg * @clk_data: holds clock related data like clk_hw* and number of clocks */ struct samsung_clk_provider { void __iomem *reg_base; struct device *dev; + struct regmap *sysreg; spinlock_t lock; + bool auto_clock_gate; + u32 gate_dbg_offset; + u32 option_offset; + u32 drcg_offset; + u32 memclk_offset; /* clk_data must be the last entry due to variable length 'hws' array */ struct clk_hw_onecell_data clk_data; }; @@ -310,6 +323,7 @@ struct samsung_cpu_clock { struct samsung_clock_reg_cache { struct list_head node; void __iomem *reg_base; + struct regmap *sysreg; struct samsung_clk_reg_dump *rdump; unsigned int rd_num; const struct samsung_clk_reg_dump *rsuspend; @@ -338,7 +352,14 @@ struct samsung_clock_reg_cache { * @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 + * @sysreg_clk_regs: list of sysreg clock registers + * @nr_sysreg_clk_regs: count of clock registers in @sysreg_clk_regs * @manual_plls: Enable manual control for PLL clocks + * @auto_clock_gate: enable auto clock mode for all components in CMU + * @gate_dbg_offset: gate debug reg offset. Used by all gates in auto clk mode + * @option_offset: option reg offset. Enables auto clk mode for entire CMU + * @drcg_offset: dynamic root clk gate enable register offset in sysreg + * @memclk_offset: memclk enable register offset in sysreg */ struct samsung_cmu_info { const struct samsung_pll_clock *pll_clks; @@ -364,8 +385,16 @@ struct samsung_cmu_info { unsigned int nr_suspend_regs; const char *clk_name; + const unsigned long *sysreg_clk_regs; + unsigned int nr_sysreg_clk_regs; + /* ARM64 Exynos CMUs */ bool manual_plls; + bool auto_clock_gate; + u32 gate_dbg_offset; + u32 option_offset; + u32 drcg_offset; + u32 memclk_offset; }; struct samsung_clk_provider *samsung_clk_init(struct device *dev, @@ -408,35 +437,56 @@ void samsung_clk_register_cpu(struct samsung_clk_provider *ctx, const struct samsung_cpu_clock *list, unsigned int nr_clk); void samsung_cmu_register_clocks(struct samsung_clk_provider *ctx, - const struct samsung_cmu_info *cmu); + const struct samsung_cmu_info *cmu, + struct device_node *np); struct samsung_clk_provider *samsung_cmu_register_one( struct device_node *, const struct samsung_cmu_info *); #ifdef CONFIG_PM_SLEEP void samsung_clk_extended_sleep_init(void __iomem *reg_base, + struct regmap *sysreg, const unsigned long *rdump, unsigned long nr_rdump, const struct samsung_clk_reg_dump *rsuspend, unsigned long nr_rsuspend); #else static inline void samsung_clk_extended_sleep_init(void __iomem *reg_base, + struct regmap *sysreg, const unsigned long *rdump, unsigned long nr_rdump, const struct samsung_clk_reg_dump *rsuspend, unsigned long nr_rsuspend) {} #endif -#define samsung_clk_sleep_init(reg_base, rdump, nr_rdump) \ - samsung_clk_extended_sleep_init(reg_base, rdump, nr_rdump, NULL, 0) +#define samsung_clk_sleep_init(reg_base, sysreg, rdump, nr_rdump) \ + samsung_clk_extended_sleep_init(reg_base, sysreg, rdump, nr_rdump, \ + NULL, 0) void samsung_clk_save(void __iomem *base, + struct regmap *regmap, struct samsung_clk_reg_dump *rd, unsigned int num_regs); void samsung_clk_restore(void __iomem *base, + struct regmap *regmap, const struct samsung_clk_reg_dump *rd, unsigned int num_regs); struct samsung_clk_reg_dump *samsung_clk_alloc_reg_dump( const unsigned long *rdump, unsigned long nr_rdump); +void samsung_en_dyn_root_clk_gating(struct device_node *np, + struct samsung_clk_provider *ctx, + const struct samsung_cmu_info *cmu, + bool cmu_has_pm); + +struct clk_hw *samsung_register_auto_gate(struct device *dev, + struct device_node *np, const char *name, + const char *parent_name, const struct clk_hw *parent_hw, + const struct clk_parent_data *parent_data, + unsigned long flags, + void __iomem *reg, u8 bit_idx, + u8 clk_gate_flags, spinlock_t *lock); + +bool samsung_is_auto_capable(struct device_node *np); + #endif /* __SAMSUNG_CLK_H */ |