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[ARM] S3C6XX: Add enable for clk_48

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Add apropriate enable call for clk_48m.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks 2008-10-31 16:14:36 +00:00
parent 1451325ced
commit 3627379fc6
2 changed files with 46 additions and 0 deletions
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22
arch/arm/plat-s3c64xx/clock.c
View File

@ -22,6 +22,7 @@
#include <mach/hardware.h>
#include <mach/map.h>
#include <plat/regs-sys.h>
#include <plat/regs-clock.h>
#include <plat/cpu.h>
#include <plat/devs.h>
@ -33,10 +34,31 @@ struct clk clk_27m = {
.rate = 27000000,
};
static int clk_48m_ctrl(struct clk *clk, int enable)
{
unsigned long flags;
u32 val;
/* can't rely on clock lock, this register has other usages */
local_irq_save(flags);
val = __raw_readl(S3C64XX_OTHERS);
if (enable)
val |= S3C64XX_OTHERS_USBMASK;
else
val &= ~S3C64XX_OTHERS_USBMASK;
__raw_writel(val, S3C64XX_OTHERS);
local_irq_restore(flags);
return 0;
}
struct clk clk_48m = {
.name = "clk_48m",
.id = -1,
.rate = 48000000,
.enable = clk_48m_ctrl,
};
static int inline s3c64xx_gate(void __iomem *reg,

24
arch/arm/plat-s3c64xx/include/plat/regs-sys.h Normal file
View File

@ -0,0 +1,24 @@
/* arch/arm/plat-s3c64xx/include/plat/regs-sys.h
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* S3C64XX system register definitions
*
* 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.
*/
#ifndef __PLAT_REGS_SYS_H
#define __PLAT_REGS_SYS_H __FILE__
#define S3C_SYSREG(x) (S3C_VA_SYS + (x))
#define S3C64XX_OTHERS S3C_SYSREG(0x900)
#define S3C64XX_OTHERS_USBMASK (1 << 16)
#endif /* _PLAT_REGS_SYS_H */