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/*
* File : drv_clock.h
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2008 - 2016, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2015-11-19 Urey the first version
*/
#ifndef DRV_CLOCK_H_
#define DRV_CLOCK_H_
#include "board.h"
#define I2S_PRI_DIV 0xb0020030
#define PCM_PRI_DIV 0xb0030014
struct clk;
struct clk_ops {
int (*enable) (struct clk *,int);
struct clk* (*get_parent) (struct clk *);
int (*set_parent) (struct clk *,struct clk *);
uint32_t (*get_rate) (struct clk *);
int (*set_rate) (struct clk *,uint32_t);
int (*set_round_rate) (struct clk *,uint32_t);
};
struct clk {
const char *name;
uint32_t rate;
struct clk *parent;
uint32_t flags;
#define CLK_FLG_NOALLOC BIT(0)
#define CLK_FLG_ENABLE BIT(1)
#define CLK_GATE_BIT(flg) ((flg) >> 24)
#define CLK_FLG_GATE BIT(2)
#define CLK_CPCCR_NO(flg) (((flg) >> 24) & 0xff)
#define CLK_FLG_CPCCR BIT(3)
#define CLK_CGU_NO(flg) (((flg) >> 24) & 0xff)
#define CLK_FLG_CGU BIT(4)
#define CLK_PLL_NO(flg) (((flg) >> 24) & 0xff)
#define CLK_FLG_PLL BIT(5)
#define CLK_CGU_AUDIO_NO(flg) (((flg) >> 24) & 0xff)
#define CLK_FLG_CGU_AUDIO BIT(6)
#define CLK_PARENT(flg) (((flg) >> 16) & 0xff)
#define CLK_RELATIVE(flg) (((flg) >> 16) & 0xff)
#define CLK_FLG_PARENT BIT(7)
#define CLK_FLG_RELATIVE BIT(8)
struct clk_ops *ops;
int count;
int init_state;
struct clk *source;
struct clk *child;
unsigned int CLK_ID;
};
int init_all_clk(void);
struct clk *clk_get(const char *id);
int clk_enable(struct clk *clk);
int clk_is_enabled(struct clk *clk);
void clk_disable(struct clk *clk);
uint32_t clk_get_rate(struct clk *clk);
void clk_put(struct clk *clk);
int clk_set_rate(struct clk *clk, uint32_t rate);
#endif
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