2a513ce799
Patch from Ben Dooks Move to using an enable count for the shared clocks and protect the clock system using a mutex instead of just disabling IRQs during the clock update. Since there is little more code in the path for non-shared clocks, the enable and disable calls use the same code for each. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
|
|
* linux/arch/arm/mach-s3c2410/clock.h
|
|
*
|
|
* Copyright (c) 2004-2005 Simtec Electronics
|
|
* http://www.simtec.co.uk/products/SWLINUX/
|
|
* Written by Ben Dooks, <ben@simtec.co.uk>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
struct clk {
|
|
struct list_head list;
|
|
struct module *owner;
|
|
struct clk *parent;
|
|
const char *name;
|
|
int id;
|
|
int usage;
|
|
unsigned long rate;
|
|
unsigned long ctrlbit;
|
|
int (*enable)(struct clk *, int enable);
|
|
};
|
|
|
|
/* other clocks which may be registered by board support */
|
|
|
|
extern struct clk s3c24xx_dclk0;
|
|
extern struct clk s3c24xx_dclk1;
|
|
extern struct clk s3c24xx_clkout0;
|
|
extern struct clk s3c24xx_clkout1;
|
|
extern struct clk s3c24xx_uclk;
|
|
|
|
/* exports for arch/arm/mach-s3c2410
|
|
*
|
|
* Please DO NOT use these outside of arch/arm/mach-s3c2410
|
|
*/
|
|
|
|
extern int s3c24xx_clkcon_enable(struct clk *clk, int enable);
|
|
extern int s3c24xx_register_clock(struct clk *clk);
|
|
|
|
extern int s3c24xx_setup_clocks(unsigned long xtal,
|
|
unsigned long fclk,
|
|
unsigned long hclk,
|
|
unsigned long pclk);
|