root/drivers/clk/mmp/clk.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MACH_MMP_CLK_H
#define __MACH_MMP_CLK_H

#include <linux/clk-provider.h>
#include <linux/math.h>
#include <linux/pm_domain.h>
#include <linux/clkdev.h>

#define APBC_NO_BUS_CTRL        BIT(0)
#define APBC_POWER_CTRL         BIT(1)


/* Clock type "factor" */
struct mmp_clk_factor_masks {
        unsigned int factor;
        unsigned int num_mask;
        unsigned int den_mask;
        unsigned int num_shift;
        unsigned int den_shift;
        unsigned int enable_mask;
};

struct mmp_clk_factor {
        struct clk_hw hw;
        void __iomem *base;
        struct mmp_clk_factor_masks *masks;
        struct u32_fract *ftbl;
        unsigned int ftbl_cnt;
        spinlock_t *lock;
};

extern struct clk *mmp_clk_register_factor(const char *name,
                const char *parent_name, unsigned long flags,
                void __iomem *base, struct mmp_clk_factor_masks *masks,
                struct u32_fract *ftbl, unsigned int ftbl_cnt,
                spinlock_t *lock);

/* Clock type "mix" */
#define MMP_CLK_BITS_MASK(width, shift)                 \
                (((1 << (width)) - 1) << (shift))
#define MMP_CLK_BITS_GET_VAL(data, width, shift)        \
                ((data & MMP_CLK_BITS_MASK(width, shift)) >> (shift))
#define MMP_CLK_BITS_SET_VAL(val, width, shift)         \
                (((val) << (shift)) & MMP_CLK_BITS_MASK(width, shift))

enum {
        MMP_CLK_MIX_TYPE_V1,
        MMP_CLK_MIX_TYPE_V2,
        MMP_CLK_MIX_TYPE_V3,
};

/* The register layout */
struct mmp_clk_mix_reg_info {
        void __iomem *reg_clk_ctrl;
        void __iomem *reg_clk_sel;
        u8 width_div;
        u8 shift_div;
        u8 width_mux;
        u8 shift_mux;
        u8 bit_fc;
};

/* The suggested clock table from user. */
struct mmp_clk_mix_clk_table {
        unsigned long rate;
        u8 parent_index;
        unsigned int divisor;
        unsigned int valid;
};

struct mmp_clk_mix_config {
        struct mmp_clk_mix_reg_info reg_info;
        struct mmp_clk_mix_clk_table *table;
        unsigned int table_size;
        u32 *mux_table;
        struct clk_div_table *div_table;
        u8 div_flags;
        u8 mux_flags;
};

struct mmp_clk_mix {
        struct clk_hw hw;
        struct mmp_clk_mix_reg_info reg_info;
        struct mmp_clk_mix_clk_table *table;
        u32 *mux_table;
        struct clk_div_table *div_table;
        unsigned int table_size;
        u8 div_flags;
        u8 mux_flags;
        unsigned int type;
        spinlock_t *lock;
};

extern const struct clk_ops mmp_clk_mix_ops;
extern struct clk *mmp_clk_register_mix(struct device *dev,
                                        const char *name,
                                        const char * const *parent_names,
                                        u8 num_parents,
                                        unsigned long flags,
                                        struct mmp_clk_mix_config *config,
                                        spinlock_t *lock);


/* Clock type "gate". MMP private gate */
#define MMP_CLK_GATE_NEED_DELAY         BIT(0)

struct mmp_clk_gate {
        struct clk_hw hw;
        void __iomem *reg;
        u32 mask;
        u32 val_enable;
        u32 val_disable;
        unsigned int flags;
        spinlock_t *lock;
};

extern const struct clk_ops mmp_clk_gate_ops;
extern struct clk *mmp_clk_register_gate(struct device *dev, const char *name,
                        const char *parent_name, unsigned long flags,
                        void __iomem *reg, u32 mask, u32 val_enable,
                        u32 val_disable, unsigned int gate_flags,
                        spinlock_t *lock);

extern struct clk *mmp_clk_register_apbc(const char *name,
                const char *parent_name, void __iomem *base,
                unsigned int delay, unsigned int apbc_flags, spinlock_t *lock);
extern struct clk *mmp_clk_register_apmu(const char *name,
                const char *parent_name, void __iomem *base, u32 enable_mask,
                spinlock_t *lock);

struct mmp_clk_unit {
        unsigned int nr_clks;
        struct clk **clk_table;
        struct clk_onecell_data clk_data;
};

struct mmp_param_fixed_rate_clk {
        unsigned int id;
        char *name;
        const char *parent_name;
        unsigned long flags;
        unsigned long fixed_rate;
};
void mmp_register_fixed_rate_clks(struct mmp_clk_unit *unit,
                                struct mmp_param_fixed_rate_clk *clks,
                                int size);

struct mmp_param_fixed_factor_clk {
        unsigned int id;
        char *name;
        const char *parent_name;
        unsigned long mult;
        unsigned long div;
        unsigned long flags;
};
void mmp_register_fixed_factor_clks(struct mmp_clk_unit *unit,
                                struct mmp_param_fixed_factor_clk *clks,
                                int size);

struct mmp_param_general_gate_clk {
        unsigned int id;
        const char *name;
        const char *parent_name;
        unsigned long flags;
        unsigned long offset;
        u8 bit_idx;
        u8 gate_flags;
        spinlock_t *lock;
};
void mmp_register_general_gate_clks(struct mmp_clk_unit *unit,
                                struct mmp_param_general_gate_clk *clks,
                                void __iomem *base, int size);

struct mmp_param_gate_clk {
        unsigned int id;
        char *name;
        const char *parent_name;
        unsigned long flags;
        unsigned long offset;
        u32 mask;
        u32 val_enable;
        u32 val_disable;
        unsigned int gate_flags;
        spinlock_t *lock;
};
void mmp_register_gate_clks(struct mmp_clk_unit *unit,
                        struct mmp_param_gate_clk *clks,
                        void __iomem *base, int size);

struct mmp_param_mux_clk {
        unsigned int id;
        char *name;
        const char * const *parent_name;
        u8 num_parents;
        unsigned long flags;
        unsigned long offset;
        u8 shift;
        u8 width;
        u8 mux_flags;
        spinlock_t *lock;
};
void mmp_register_mux_clks(struct mmp_clk_unit *unit,
                        struct mmp_param_mux_clk *clks,
                        void __iomem *base, int size);

struct mmp_param_div_clk {
        unsigned int id;
        char *name;
        const char *parent_name;
        unsigned long flags;
        unsigned long offset;
        u8 shift;
        u8 width;
        u8 div_flags;
        spinlock_t *lock;
};
void mmp_register_div_clks(struct mmp_clk_unit *unit,
                        struct mmp_param_div_clk *clks,
                        void __iomem *base, int size);

struct mmp_param_pll_clk {
        unsigned int id;
        char *name;
        unsigned long default_rate;
        unsigned long enable_offset;
        u32 enable;
        unsigned long offset;
        u8 shift;
        /* MMP3 specific: */
        unsigned long input_rate;
        unsigned long postdiv_offset;
        unsigned long postdiv_shift;
};
void mmp_register_pll_clks(struct mmp_clk_unit *unit,
                        struct mmp_param_pll_clk *clks,
                        void __iomem *base, int size);

#define DEFINE_MIX_REG_INFO(w_d, s_d, w_m, s_m, fc)     \
{                                                       \
        .width_div = (w_d),                             \
        .shift_div = (s_d),                             \
        .width_mux = (w_m),                             \
        .shift_mux = (s_m),                             \
        .bit_fc = (fc),                                 \
}

void mmp_clk_init(struct device_node *np, struct mmp_clk_unit *unit,
                int nr_clks);
void mmp_clk_add(struct mmp_clk_unit *unit, unsigned int id,
                struct clk *clk);

/* Power islands */
#define MMP_PM_DOMAIN_NO_DISABLE                BIT(0)

struct generic_pm_domain *mmp_pm_domain_register(const char *name,
                void __iomem *reg,
                u32 power_on, u32 reset, u32 clock_enable,
                unsigned int flags, spinlock_t *lock);

#endif