linux/drivers/clk/mmp/clk.h
Chao Xie 4661fda10f clk: mmp: add basic support functions for DT support
In order to support DT for mmp SOC clocks, it defines
some basic APIs which are shared by all mmp SOC clock
units.

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
2014-11-12 16:34:05 -08:00

240 lines
5.5 KiB
C

#ifndef __MACH_MMP_CLK_H
#define __MACH_MMP_CLK_H
#include <linux/clk-provider.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;
};
struct mmp_clk_factor_tbl {
unsigned int num;
unsigned int den;
};
struct mmp_clk_factor {
struct clk_hw hw;
void __iomem *base;
struct mmp_clk_factor_masks *masks;
struct mmp_clk_factor_tbl *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 mmp_clk_factor_tbl *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 **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_pll2(const char *name,
const char *parent_name, unsigned long flags);
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 **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);
#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);
#endif