mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
13e91e4583
Add a new macro to declare muxes based on a table and a gate. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Chen-Yu Tsai <wens@csie.org>
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
#ifndef _CCU_MUX_H_
|
|
#define _CCU_MUX_H_
|
|
|
|
#include <linux/clk-provider.h>
|
|
|
|
#include "ccu_common.h"
|
|
|
|
struct ccu_mux_fixed_prediv {
|
|
u8 index;
|
|
u16 div;
|
|
};
|
|
|
|
struct ccu_mux_internal {
|
|
u8 shift;
|
|
u8 width;
|
|
const u8 *table;
|
|
|
|
const struct ccu_mux_fixed_prediv *fixed_predivs;
|
|
u8 n_predivs;
|
|
|
|
struct {
|
|
u8 index;
|
|
u8 shift;
|
|
u8 width;
|
|
} variable_prediv;
|
|
};
|
|
|
|
#define _SUNXI_CCU_MUX_TABLE(_shift, _width, _table) \
|
|
{ \
|
|
.shift = _shift, \
|
|
.width = _width, \
|
|
.table = _table, \
|
|
}
|
|
|
|
#define _SUNXI_CCU_MUX(_shift, _width) \
|
|
_SUNXI_CCU_MUX_TABLE(_shift, _width, NULL)
|
|
|
|
struct ccu_mux {
|
|
u16 reg;
|
|
u32 enable;
|
|
|
|
struct ccu_mux_internal mux;
|
|
struct ccu_common common;
|
|
};
|
|
|
|
#define SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, _table, \
|
|
_reg, _shift, _width, _gate, \
|
|
_flags) \
|
|
struct ccu_mux _struct = { \
|
|
.enable = _gate, \
|
|
.mux = _SUNXI_CCU_MUX_TABLE(_shift, _width, _table), \
|
|
.common = { \
|
|
.reg = _reg, \
|
|
.hw.init = CLK_HW_INIT_PARENTS(_name, \
|
|
_parents, \
|
|
&ccu_mux_ops, \
|
|
_flags), \
|
|
} \
|
|
}
|
|
|
|
#define SUNXI_CCU_MUX_WITH_GATE(_struct, _name, _parents, _reg, \
|
|
_shift, _width, _gate, _flags) \
|
|
SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, NULL, \
|
|
_reg, _shift, _width, _gate, \
|
|
_flags)
|
|
|
|
#define SUNXI_CCU_MUX(_struct, _name, _parents, _reg, _shift, _width, \
|
|
_flags) \
|
|
SUNXI_CCU_MUX_TABLE_WITH_GATE(_struct, _name, _parents, NULL, \
|
|
_reg, _shift, _width, 0, _flags)
|
|
|
|
static inline struct ccu_mux *hw_to_ccu_mux(struct clk_hw *hw)
|
|
{
|
|
struct ccu_common *common = hw_to_ccu_common(hw);
|
|
|
|
return container_of(common, struct ccu_mux, common);
|
|
}
|
|
|
|
extern const struct clk_ops ccu_mux_ops;
|
|
|
|
void ccu_mux_helper_adjust_parent_for_prediv(struct ccu_common *common,
|
|
struct ccu_mux_internal *cm,
|
|
int parent_index,
|
|
unsigned long *parent_rate);
|
|
int ccu_mux_helper_determine_rate(struct ccu_common *common,
|
|
struct ccu_mux_internal *cm,
|
|
struct clk_rate_request *req,
|
|
unsigned long (*round)(struct ccu_mux_internal *,
|
|
unsigned long,
|
|
unsigned long,
|
|
void *),
|
|
void *data);
|
|
u8 ccu_mux_helper_get_parent(struct ccu_common *common,
|
|
struct ccu_mux_internal *cm);
|
|
int ccu_mux_helper_set_parent(struct ccu_common *common,
|
|
struct ccu_mux_internal *cm,
|
|
u8 index);
|
|
|
|
struct ccu_mux_nb {
|
|
struct notifier_block clk_nb;
|
|
struct ccu_common *common;
|
|
struct ccu_mux_internal *cm;
|
|
|
|
u32 delay_us; /* How many us to wait after reparenting */
|
|
u8 bypass_index; /* Which parent to temporarily use */
|
|
u8 original_index; /* This is set by the notifier callback */
|
|
};
|
|
|
|
#define to_ccu_mux_nb(_nb) container_of(_nb, struct ccu_mux_nb, clk_nb)
|
|
|
|
int ccu_mux_notifier_register(struct clk *clk, struct ccu_mux_nb *mux_nb);
|
|
|
|
#endif /* _CCU_MUX_H_ */
|