original development tree for Linux kernel GTP module; now long in mainline.
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/*
* Clock framework definitions for SPEAr platform
*
* Copyright (C) 2012 ST Microelectronics
* Viresh Kumar <viresh.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __SPEAR_CLK_H
#define __SPEAR_CLK_H
#include <linux/clk-provider.h>
#include <linux/spinlock_types.h>
#include <linux/types.h>
/* Auxiliary Synth clk */
/* Default masks */
#define AUX_EQ_SEL_SHIFT 30
#define AUX_EQ_SEL_MASK 1
#define AUX_EQ1_SEL 0
#define AUX_EQ2_SEL 1
#define AUX_XSCALE_SHIFT 16
#define AUX_XSCALE_MASK 0xFFF
#define AUX_YSCALE_SHIFT 0
#define AUX_YSCALE_MASK 0xFFF
#define AUX_SYNT_ENB 31
struct aux_clk_masks {
u32 eq_sel_mask;
u32 eq_sel_shift;
u32 eq1_mask;
u32 eq2_mask;
u32 xscale_sel_mask;
u32 xscale_sel_shift;
u32 yscale_sel_mask;
u32 yscale_sel_shift;
u32 enable_bit;
};
struct aux_rate_tbl {
u16 xscale;
u16 yscale;
u8 eq;
};
struct clk_aux {
struct clk_hw hw;
void __iomem *reg;
struct aux_clk_masks *masks;
struct aux_rate_tbl *rtbl;
u8 rtbl_cnt;
spinlock_t *lock;
};
/* Fractional Synth clk */
struct frac_rate_tbl {
u32 div;
};
struct clk_frac {
struct clk_hw hw;
void __iomem *reg;
struct frac_rate_tbl *rtbl;
u8 rtbl_cnt;
spinlock_t *lock;
};
/* GPT clk */
struct gpt_rate_tbl {
u16 mscale;
u16 nscale;
};
struct clk_gpt {
struct clk_hw hw;
void __iomem *reg;
struct gpt_rate_tbl *rtbl;
u8 rtbl_cnt;
spinlock_t *lock;
};
/* VCO-PLL clk */
struct pll_rate_tbl {
u8 mode;
u16 m;
u8 n;
u8 p;
};
struct clk_vco {
struct clk_hw hw;
void __iomem *mode_reg;
void __iomem *cfg_reg;
struct pll_rate_tbl *rtbl;
u8 rtbl_cnt;
spinlock_t *lock;
};
struct clk_pll {
struct clk_hw hw;
struct clk_vco *vco;
const char *parent[1];
spinlock_t *lock;
};
typedef unsigned long (*clk_calc_rate)(struct clk_hw *hw, unsigned long prate,
int index);
/* clk register routines */
struct clk *clk_register_aux(const char *aux_name, const char *gate_name,
const char *parent_name, unsigned long flags, void __iomem *reg,
struct aux_clk_masks *masks, struct aux_rate_tbl *rtbl,
u8 rtbl_cnt, spinlock_t *lock, struct clk **gate_clk);
struct clk *clk_register_frac(const char *name, const char *parent_name,
unsigned long flags, void __iomem *reg,
struct frac_rate_tbl *rtbl, u8 rtbl_cnt, spinlock_t *lock);
struct clk *clk_register_gpt(const char *name, const char *parent_name, unsigned
long flags, void __iomem *reg, struct gpt_rate_tbl *rtbl, u8
rtbl_cnt, spinlock_t *lock);
struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
const char *vco_gate_name, const char *parent_name,
unsigned long flags, void __iomem *mode_reg, void __iomem
*cfg_reg, struct pll_rate_tbl *rtbl, u8 rtbl_cnt,
spinlock_t *lock, struct clk **pll_clk,
struct clk **vco_gate_clk);
long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
int *index);
#endif /* __SPEAR_CLK_H */