linux/arch/arm/plat-stmp3xxx/clock.h
dmitry pervushin 5cccd37ea1 [ARM] 5477/1: Freescale STMP platform support [6/10]
Sources: common STMP3xxx platform support

Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-04-27 10:28:08 +01:00

61 lines
1.5 KiB
C

/*
* Clock control driver for Freescale STMP37XX/STMP378X - internal header file
*
* Author: Vitaly Wool <vital@embeddedalley.com>
*
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __ARCH_ARM_STMX3XXX_CLOCK_H__
#define __ARCH_ARM_STMX3XXX_CLOCK_H__
#ifndef __ASSEMBLER__
struct clk_ops {
int (*enable) (struct clk *);
int (*disable) (struct clk *);
long (*get_rate) (struct clk *);
long (*round_rate) (struct clk *, u32);
int (*set_rate) (struct clk *, u32);
int (*set_parent) (struct clk *, struct clk *);
};
struct clk {
struct clk *parent;
u32 rate;
u32 flags;
u8 scale_shift;
u8 enable_shift;
u8 bypass_shift;
u8 busy_bit;
s8 usage;
int enable_wait;
int enable_negate;
u32 saved_div;
void __iomem *enable_reg;
void __iomem *scale_reg;
void __iomem *bypass_reg;
void __iomem *busy_reg;
struct clk_ops *ops;
};
#endif /* __ASSEMBLER__ */
/* Flags */
#define RATE_PROPAGATES (1<<0)
#define NEEDS_INITIALIZATION (1<<1)
#define PARENT_SET_RATE (1<<2)
#define FIXED_RATE (1<<3)
#define ENABLED (1<<4)
#define NEEDS_SET_PARENT (1<<5)
#endif